Safe Haskell	None
Language	Haskell2010

Hledger.Web.Import

Synopsis

(++) :: [a] -> [a] -> [a]
seq :: forall (r :: RuntimeRep) a (b :: TYPE r). a -> b -> b
filter :: (a -> Bool) -> [a] -> [a]
zip :: [a] -> [b] -> [(a, b)]
print :: Show a => a -> IO ()
fst :: (a, b) -> a
snd :: (a, b) -> b
otherwise :: Bool
map :: (a -> b) -> [a] -> [b]
($) :: forall (r :: RuntimeRep) a (b :: TYPE r). (a -> b) -> a -> b
fromIntegral :: (Integral a, Num b) => a -> b
realToFrac :: (Real a, Fractional b) => a -> b
guard :: Alternative f => Bool -> f ()
join :: Monad m => m (m a) -> m a
class Bounded a where
- minBound :: a
- maxBound :: a
class Enum a where
- succ :: a -> a
- pred :: a -> a
- toEnum :: Int -> a
- fromEnum :: a -> Int
- enumFrom :: a -> [a]
- enumFromThen :: a -> a -> [a]
- enumFromTo :: a -> a -> [a]
- enumFromThenTo :: a -> a -> a -> [a]
class Eq a where
- (==) :: a -> a -> Bool
- (/=) :: a -> a -> Bool
class Fractional a => Floating a where
- pi :: a
- exp :: a -> a
- log :: a -> a
- sqrt :: a -> a
- (**) :: a -> a -> a
- logBase :: a -> a -> a
- sin :: a -> a
- cos :: a -> a
- tan :: a -> a
- asin :: a -> a
- acos :: a -> a
- atan :: a -> a
- sinh :: a -> a
- cosh :: a -> a
- tanh :: a -> a
- asinh :: a -> a
- acosh :: a -> a
- atanh :: a -> a
class Num a => Fractional a where
- (/) :: a -> a -> a
- recip :: a -> a
- fromRational :: Rational -> a
class (Real a, Enum a) => Integral a where
- quot :: a -> a -> a
- rem :: a -> a -> a
- div :: a -> a -> a
- mod :: a -> a -> a
- quotRem :: a -> a -> (a, a)
- divMod :: a -> a -> (a, a)
- toInteger :: a -> Integer
class Applicative m => Monad (m :: Type -> Type) where
- (>>=) :: m a -> (a -> m b) -> m b
- (>>) :: m a -> m b -> m b
- return :: a -> m a
class Functor (f :: Type -> Type) where
- fmap :: (a -> b) -> f a -> f b
- (<$) :: a -> f b -> f a
class Num a where
- (+) :: a -> a -> a
- (-) :: a -> a -> a
- (*) :: a -> a -> a
- negate :: a -> a
- abs :: a -> a
- signum :: a -> a
- fromInteger :: Integer -> a
class Eq a => Ord a where
- compare :: a -> a -> Ordering
- (<) :: a -> a -> Bool
- (<=) :: a -> a -> Bool
- (>) :: a -> a -> Bool
- (>=) :: a -> a -> Bool
- max :: a -> a -> a
- min :: a -> a -> a
class Read a where
- readsPrec :: Int -> ReadS a
- readList :: ReadS [a]
class (Num a, Ord a) => Real a where
- toRational :: a -> Rational
class (RealFrac a, Floating a) => RealFloat a where
- floatRadix :: a -> Integer
- floatDigits :: a -> Int
- floatRange :: a -> (Int, Int)
- decodeFloat :: a -> (Integer, Int)
- encodeFloat :: Integer -> Int -> a
- exponent :: a -> Int
- significand :: a -> a
- scaleFloat :: Int -> a -> a
- isNaN :: a -> Bool
- isInfinite :: a -> Bool
- isDenormalized :: a -> Bool
- isNegativeZero :: a -> Bool
- isIEEE :: a -> Bool
- atan2 :: a -> a -> a
class (Real a, Fractional a) => RealFrac a where
- properFraction :: Integral b => a -> (b, a)
- truncate :: Integral b => a -> b
- round :: Integral b => a -> b
- ceiling :: Integral b => a -> b
- floor :: Integral b => a -> b
class Show a where
- showsPrec :: Int -> a -> ShowS
- show :: a -> String
- showList :: [a] -> ShowS
class Monad m => MonadFail (m :: Type -> Type) where
- fail :: String -> m a
class Functor f => Applicative (f :: Type -> Type) where
- pure :: a -> f a
- (<*>) :: f (a -> b) -> f a -> f b
- (*>) :: f a -> f b -> f b
- (<*) :: f a -> f b -> f a
class Foldable (t :: Type -> Type) where
- fold :: Monoid m => t m -> m
- foldMap :: Monoid m => (a -> m) -> t a -> m
- foldMap' :: Monoid m => (a -> m) -> t a -> m
- foldr :: (a -> b -> b) -> b -> t a -> b
- foldr' :: (a -> b -> b) -> b -> t a -> b
- foldl :: (b -> a -> b) -> b -> t a -> b
- foldl' :: (b -> a -> b) -> b -> t a -> b
- foldr1 :: (a -> a -> a) -> t a -> a
- foldl1 :: (a -> a -> a) -> t a -> a
- toList :: t a -> [a]
- null :: t a -> Bool
- length :: t a -> Int
- elem :: Eq a => a -> t a -> Bool
- maximum :: Ord a => t a -> a
- minimum :: Ord a => t a -> a
- sum :: Num a => t a -> a
- product :: Num a => t a -> a
class (Functor t, Foldable t) => Traversable (t :: Type -> Type) where
- traverse :: Applicative f => (a -> f b) -> t a -> f (t b)
- sequenceA :: Applicative f => t (f a) -> f (t a)
- mapM :: Monad m => (a -> m b) -> t a -> m (t b)
- sequence :: Monad m => t (m a) -> m (t a)
class Semigroup a where
- (<>) :: a -> a -> a
class Semigroup a => Monoid a where
- mempty :: a
- mappend :: a -> a -> a
- mconcat :: [a] -> a
data Bool
- = False
- | True
data Char
data Double
data Float
data Int
data Integer
data Maybe a
- = Nothing
- | Just a
data Ordering
- = LT
- | EQ
- | GT
type Rational = Ratio Integer
data IO a
data Word
data Either a b
- = Left a
- | Right b
type FilePath = String
error :: forall (r :: RuntimeRep) (a :: TYPE r). HasCallStack => [Char] -> a
type String = [Char]
type ShowS = String -> String
data ByteString
(<$>) :: Functor f => (a -> b) -> f a -> f b
data Text
const :: a -> b -> a
(.) :: (b -> c) -> (a -> b) -> a -> c
id :: a -> a
data UTCTime = UTCTime {
- utctDay :: Day
- utctDayTime :: DiffTime
}
class ToJSON a where
- toJSON :: a -> Value
- toEncoding :: a -> Encoding
- toJSONList :: [a] -> Value
- toEncodingList :: [a] -> Encoding
(.=) :: (KeyValue kv, ToJSON v) => Text -> v -> kv
(.:) :: FromJSON a => Object -> Text -> Parser a
class FromJSON a where
- parseJSON :: Value -> Parser a
- parseJSONList :: Value -> Parser [a]
object :: [Pair] -> Value
data Value
- = Object !Object
- | Array !Array
- | String !Text
- | Number !Scientific
- | Bool !Bool
- | Null
class Bifunctor (p :: Type -> Type -> Type) where
- bimap :: (a -> b) -> (c -> d) -> p a c -> p b d
- first :: (a -> b) -> p a c -> p b c
- second :: (b -> c) -> p a b -> p a c
forM_ :: (Foldable t, Monad m) => t a -> (a -> m b) -> m ()
mapM_ :: (Foldable t, Monad m) => (a -> m b) -> t a -> m ()
read :: Read a => String -> a
class (Alternative m, Monad m) => MonadPlus (m :: Type -> Type) where
- mzero :: m a
- mplus :: m a -> m a -> m a
data Void
class Monad m => MonadIO (m :: Type -> Type) where
- liftIO :: IO a -> m a
mfilter :: MonadPlus m => (a -> Bool) -> m a -> m a
(<$!>) :: Monad m => (a -> b) -> m a -> m b
unless :: Applicative f => Bool -> f () -> f ()
replicateM_ :: Applicative m => Int -> m a -> m ()
replicateM :: Applicative m => Int -> m a -> m [a]
foldM_ :: (Foldable t, Monad m) => (b -> a -> m b) -> b -> t a -> m ()
foldM :: (Foldable t, Monad m) => (b -> a -> m b) -> b -> t a -> m b
zipWithM_ :: Applicative m => (a -> b -> m c) -> [a] -> [b] -> m ()
zipWithM :: Applicative m => (a -> b -> m c) -> [a] -> [b] -> m [c]
mapAndUnzipM :: Applicative m => (a -> m (b, c)) -> [a] -> m ([b], [c])
forever :: Applicative f => f a -> f b
(<=<) :: Monad m => (b -> m c) -> (a -> m b) -> a -> m c
(>=>) :: Monad m => (a -> m b) -> (b -> m c) -> a -> m c
filterM :: Applicative m => (a -> m Bool) -> [a] -> m [a]
foldMapDefault :: (Traversable t, Monoid m) => (a -> m) -> t a -> m
fmapDefault :: Traversable t => (a -> b) -> t a -> t b
mapAccumR :: Traversable t => (a -> b -> (a, c)) -> a -> t b -> (a, t c)
mapAccumL :: Traversable t => (a -> b -> (a, c)) -> a -> t b -> (a, t c)
forM :: (Traversable t, Monad m) => t a -> (a -> m b) -> m (t b)
for :: (Traversable t, Applicative f) => t a -> (a -> f b) -> f (t b)
readIO :: Read a => String -> IO a
readLn :: Read a => IO a
appendFile :: FilePath -> String -> IO ()
interact :: (String -> String) -> IO ()
getContents :: IO String
getLine :: IO String
getChar :: IO Char
putStrLn :: String -> IO ()
putStr :: String -> IO ()
putChar :: Char -> IO ()
ioError :: IOError -> IO a
userError :: String -> IOError
type IOError = IOException
find :: Foldable t => (a -> Bool) -> t a -> Maybe a
notElem :: (Foldable t, Eq a) => a -> t a -> Bool
minimumBy :: Foldable t => (a -> a -> Ordering) -> t a -> a
maximumBy :: Foldable t => (a -> a -> Ordering) -> t a -> a
all :: Foldable t => (a -> Bool) -> t a -> Bool
any :: Foldable t => (a -> Bool) -> t a -> Bool
or :: Foldable t => t Bool -> Bool
and :: Foldable t => t Bool -> Bool
concatMap :: Foldable t => (a -> [b]) -> t a -> [b]
concat :: Foldable t => t [a] -> [a]
msum :: (Foldable t, MonadPlus m) => t (m a) -> m a
asum :: (Foldable t, Alternative f) => t (f a) -> f a
sequence_ :: (Foldable t, Monad m) => t (m a) -> m ()
sequenceA_ :: (Foldable t, Applicative f) => t (f a) -> f ()
for_ :: (Foldable t, Applicative f) => t a -> (a -> f b) -> f ()
traverse_ :: (Foldable t, Applicative f) => (a -> f b) -> t a -> f ()
foldlM :: (Foldable t, Monad m) => (b -> a -> m b) -> b -> t a -> m b
foldrM :: (Foldable t, Monad m) => (a -> b -> m b) -> b -> t a -> m b
unwords :: [String] -> String
words :: String -> [String]
unlines :: [String] -> String
lines :: String -> [String]
unfoldr :: (b -> Maybe (a, b)) -> b -> [a]
reads :: Read a => ReadS a
fromRight :: b -> Either a b -> b
fromLeft :: a -> Either a b -> a
isRight :: Either a b -> Bool
isLeft :: Either a b -> Bool
partitionEithers :: [Either a b] -> ([a], [b])
rights :: [Either a b] -> [b]
lefts :: [Either a b] -> [a]
either :: (a -> c) -> (b -> c) -> Either a b -> c
lex :: ReadS String
readParen :: Bool -> ReadS a -> ReadS a
type ReadS a = String -> [(a, String)]
lcm :: Integral a => a -> a -> a
gcd :: Integral a => a -> a -> a
(^^) :: (Fractional a, Integral b) => a -> b -> a
(^) :: (Num a, Integral b) => a -> b -> a
odd :: Integral a => a -> Bool
even :: Integral a => a -> Bool
showParen :: Bool -> ShowS -> ShowS
showString :: String -> ShowS
showChar :: Char -> ShowS
shows :: Show a => a -> ShowS
unzip3 :: [(a, b, c)] -> ([a], [b], [c])
unzip :: [(a, b)] -> ([a], [b])
zipWith3 :: (a -> b -> c -> d) -> [a] -> [b] -> [c] -> [d]
zipWith :: (a -> b -> c) -> [a] -> [b] -> [c]
zip3 :: [a] -> [b] -> [c] -> [(a, b, c)]
(!!) :: [a] -> Int -> a
lookup :: Eq a => a -> [(a, b)] -> Maybe b
reverse :: [a] -> [a]
break :: (a -> Bool) -> [a] -> ([a], [a])
span :: (a -> Bool) -> [a] -> ([a], [a])
splitAt :: Int -> [a] -> ([a], [a])
drop :: Int -> [a] -> [a]
take :: Int -> [a] -> [a]
dropWhile :: (a -> Bool) -> [a] -> [a]
takeWhile :: (a -> Bool) -> [a] -> [a]
cycle :: [a] -> [a]
replicate :: Int -> a -> [a]
repeat :: a -> [a]
iterate :: (a -> a) -> a -> [a]
scanr1 :: (a -> a -> a) -> [a] -> [a]
scanr :: (a -> b -> b) -> b -> [a] -> [b]
scanl1 :: (a -> a -> a) -> [a] -> [a]
scanl :: (b -> a -> b) -> b -> [a] -> [b]
mapMaybe :: (a -> Maybe b) -> [a] -> [b]
catMaybes :: [Maybe a] -> [a]
listToMaybe :: [a] -> Maybe a
maybeToList :: Maybe a -> [a]
fromMaybe :: a -> Maybe a -> a
fromJust :: HasCallStack => Maybe a -> a
isNothing :: Maybe a -> Bool
isJust :: Maybe a -> Bool
maybe :: b -> (a -> b) -> Maybe a -> b
void :: Functor f => f a -> f ()
uncurry :: (a -> b -> c) -> (a, b) -> c
curry :: ((a, b) -> c) -> a -> b -> c
subtract :: Num a => a -> a -> a
asTypeOf :: a -> a -> a
until :: (a -> Bool) -> (a -> a) -> a -> a
($!) :: forall (r :: RuntimeRep) a (b :: TYPE r). (a -> b) -> a -> b
flip :: (a -> b -> c) -> b -> a -> c
ap :: Monad m => m (a -> b) -> m a -> m b
liftM5 :: Monad m => (a1 -> a2 -> a3 -> a4 -> a5 -> r) -> m a1 -> m a2 -> m a3 -> m a4 -> m a5 -> m r
liftM4 :: Monad m => (a1 -> a2 -> a3 -> a4 -> r) -> m a1 -> m a2 -> m a3 -> m a4 -> m r
liftM3 :: Monad m => (a1 -> a2 -> a3 -> r) -> m a1 -> m a2 -> m a3 -> m r
liftM2 :: Monad m => (a1 -> a2 -> r) -> m a1 -> m a2 -> m r
liftM :: Monad m => (a1 -> r) -> m a1 -> m r
when :: Applicative f => Bool -> f () -> f ()
(=<<) :: Monad m => (a -> m b) -> m a -> m b
undefined :: forall (r :: RuntimeRep) (a :: TYPE r). HasCallStack => a
errorWithoutStackTrace :: forall (r :: RuntimeRep) (a :: TYPE r). [Char] -> a
(&&) :: Bool -> Bool -> Bool
(||) :: Bool -> Bool -> Bool
not :: Bool -> Bool
type Markup = MarkupM ()
preEscapedToMarkup :: ToMarkup a => a -> Markup
toHtml :: ToMarkup a => a -> Html
type Html = Markup
class MonadIO m => MonadUnliftIO (m :: Type -> Type) where
- withRunInIO :: ((forall a. m a -> IO a) -> IO b) -> m b
class MonadIO m => MonadResource (m :: Type -> Type) where
- liftResourceT :: ResourceT IO a -> m a
class MonadTrans (t :: (Type -> Type) -> Type -> Type) where
- lift :: Monad m => m a -> t m a
class Default a where
- def :: a
logOtherS :: Q Exp
logErrorS :: Q Exp
logWarnS :: Q Exp
logInfoS :: Q Exp
logDebugS :: Q Exp
logOther :: Text -> Q Exp
logError :: Q Exp
logWarn :: Q Exp
logInfo :: Q Exp
logDebug :: Q Exp
data LogLevel
- = LevelDebug
- | LevelInfo
- | LevelWarn
- | LevelError
- | LevelOther Text
class Monad m => MonadLogger (m :: Type -> Type)
class PathPiece s where
- fromPathPiece :: Text -> Maybe s
- toPathPiece :: s -> Text
class PathMultiPiece s where
- fromPathMultiPiece :: [Text] -> Maybe s
- toPathMultiPiece :: s -> [Text]
discoverEntities :: Q Exp
mkMigrate :: String -> [UnboundEntityDef] -> Q [Dec]
migrateModels :: [EntityDef] -> Migration
derivePersistFieldJSON :: String -> Q [Dec]
derivePersistField :: String -> Q [Dec]
mkEntityDefList :: String -> [UnboundEntityDef] -> Q [Dec]
mkDeleteCascade :: MkPersistSettings -> [UnboundEntityDef] -> Q [Dec]
mkSave :: String -> [EntityDef] -> Q [Dec]
share :: [[a] -> Q [Dec]] -> [a] -> Q [Dec]
persistFieldFromEntity :: MkPersistSettings -> UnboundEntityDef -> Q [Dec]
fieldError :: Text -> Text -> Text -> Text
pkNewtype :: MkPersistSettings -> UnboundEntityDef -> Bool
lensPTH :: (s -> a) -> (s -> b -> t) -> Lens s t a b
sqlSettings :: MkPersistSettings
mkPersistSettings :: Type -> MkPersistSettings
setImplicitIdDef :: ImplicitIdDef -> MkPersistSettings -> MkPersistSettings
mkPersistWith :: MkPersistSettings -> [EntityDef] -> [UnboundEntityDef] -> Q [Dec]
mkPersist :: MkPersistSettings -> [UnboundEntityDef] -> Q [Dec]
parseReferences :: PersistSettings -> Text -> Q Exp
embedEntityDefs :: [EntityDef] -> [UnboundEntityDef] -> [UnboundEntityDef]
persistManyFileWith :: PersistSettings -> [FilePath] -> Q Exp
persistFileWith :: PersistSettings -> FilePath -> Q Exp
persistLowerCase :: QuasiQuoter
persistUpperCase :: QuasiQuoter
persistWith :: PersistSettings -> QuasiQuoter
data MkPersistSettings
data EntityJSON = EntityJSON {
- entityToJSON :: Name
- entityFromJSON :: Name
}
data ImplicitIdDef
limitOffsetOrder :: PersistEntity val => [SelectOpt val] -> (Int, Int, [SelectOpt val])
toJsonText :: ToJSON j => j -> Text
mapToJSON :: [(Text, PersistValue)] -> Text
listToJSON :: [PersistValue] -> Text
(||.) :: [Filter v] -> [Filter v] -> [Filter v]
(/<-.) :: forall v typ. PersistField typ => EntityField v typ -> [typ] -> Filter v
(<-.) :: forall v typ. PersistField typ => EntityField v typ -> [typ] -> Filter v
(>=.) :: forall v typ. PersistField typ => EntityField v typ -> typ -> Filter v
(>.) :: forall v typ. PersistField typ => EntityField v typ -> typ -> Filter v
(<=.) :: forall v typ. PersistField typ => EntityField v typ -> typ -> Filter v
(<.) :: forall v typ. PersistField typ => EntityField v typ -> typ -> Filter v
(!=.) :: forall v typ. PersistField typ => EntityField v typ -> typ -> Filter v
(==.) :: forall v typ. PersistField typ => EntityField v typ -> typ -> Filter v
(/=.) :: forall v typ. PersistField typ => EntityField v typ -> typ -> Update v
(*=.) :: forall v typ. PersistField typ => EntityField v typ -> typ -> Update v
(-=.) :: forall v typ. PersistField typ => EntityField v typ -> typ -> Update v
(+=.) :: forall v typ. PersistField typ => EntityField v typ -> typ -> Update v
(=.) :: forall v typ. PersistField typ => EntityField v typ -> typ -> Update v
type PersistUnique a = PersistUniqueWrite a
type PersistQuery a = PersistQueryWrite a
type PersistStore a = PersistStoreWrite a
deleteCascadeWhere :: forall record backend (m :: Type -> Type). (MonadIO m, DeleteCascade record backend, PersistQueryWrite backend) => [Filter record] -> ReaderT backend m ()
class (PersistStoreWrite backend, PersistEntity record, BaseBackend backend ~ PersistEntityBackend record) => DeleteCascade record backend where
- deleteCascade :: forall (m :: Type -> Type). MonadIO m => Key record -> ReaderT backend m ()
selectKeysList :: forall record backend (m :: Type -> Type). (MonadIO m, PersistQueryRead backend, PersistRecordBackend record backend) => [Filter record] -> [SelectOpt record] -> ReaderT backend m [Key record]
selectList :: forall record backend (m :: Type -> Type). (MonadIO m, PersistQueryRead backend, PersistRecordBackend record backend) => [Filter record] -> [SelectOpt record] -> ReaderT backend m [Entity record]
selectKeys :: forall record backend (m :: Type -> Type). (PersistQueryRead backend, MonadResource m, PersistRecordBackend record backend, MonadReader backend m) => [Filter record] -> [SelectOpt record] -> ConduitM () (Key record) m ()
selectSource :: forall record backend (m :: Type -> Type). (PersistQueryRead backend, MonadResource m, PersistRecordBackend record backend, MonadReader backend m) => [Filter record] -> [SelectOpt record] -> ConduitM () (Entity record) m ()
class (PersistCore backend, PersistStoreRead backend) => PersistQueryRead backend where
- selectSourceRes :: forall record (m1 :: Type -> Type) (m2 :: Type -> Type). (PersistRecordBackend record backend, MonadIO m1, MonadIO m2) => [Filter record] -> [SelectOpt record] -> ReaderT backend m1 (Acquire (ConduitM () (Entity record) m2 ()))
- selectFirst :: forall (m :: Type -> Type) record. (MonadIO m, PersistRecordBackend record backend) => [Filter record] -> [SelectOpt record] -> ReaderT backend m (Maybe (Entity record))
- selectKeysRes :: forall (m1 :: Type -> Type) (m2 :: Type -> Type) record. (MonadIO m1, MonadIO m2, PersistRecordBackend record backend) => [Filter record] -> [SelectOpt record] -> ReaderT backend m1 (Acquire (ConduitM () (Key record) m2 ()))
- count :: forall (m :: Type -> Type) record. (MonadIO m, PersistRecordBackend record backend) => [Filter record] -> ReaderT backend m Int
- exists :: forall (m :: Type -> Type) record. (MonadIO m, PersistRecordBackend record backend) => [Filter record] -> ReaderT backend m Bool
class (PersistQueryRead backend, PersistStoreWrite backend) => PersistQueryWrite backend where
- updateWhere :: forall (m :: Type -> Type) record. (MonadIO m, PersistRecordBackend record backend) => [Filter record] -> [Update record] -> ReaderT backend m ()
- deleteWhere :: forall (m :: Type -> Type) record. (MonadIO m, PersistRecordBackend record backend) => [Filter record] -> ReaderT backend m ()
checkUniqueUpdateable :: forall record backend (m :: Type -> Type). (MonadIO m, PersistRecordBackend record backend, PersistUniqueRead backend) => Entity record -> ReaderT backend m (Maybe (Unique record))
checkUnique :: forall record backend (m :: Type -> Type). (MonadIO m, PersistRecordBackend record backend, PersistUniqueRead backend) => record -> ReaderT backend m (Maybe (Unique record))
replaceUnique :: forall record backend (m :: Type -> Type). (MonadIO m, Eq (Unique record), PersistRecordBackend record backend, PersistUniqueWrite backend) => Key record -> record -> ReaderT backend m (Maybe (Unique record))
getByValue :: forall record (m :: Type -> Type) backend. (MonadIO m, PersistUniqueRead backend, PersistRecordBackend record backend, AtLeastOneUniqueKey record) => record -> ReaderT backend m (Maybe (Entity record))
onlyUnique :: forall record backend (m :: Type -> Type). (MonadIO m, PersistUniqueWrite backend, PersistRecordBackend record backend, OnlyOneUniqueKey record) => record -> ReaderT backend m (Unique record)
insertUniqueEntity :: forall record backend (m :: Type -> Type). (MonadIO m, PersistRecordBackend record backend, PersistUniqueWrite backend) => record -> ReaderT backend m (Maybe (Entity record))
insertBy :: forall record backend (m :: Type -> Type). (MonadIO m, PersistUniqueWrite backend, PersistRecordBackend record backend, AtLeastOneUniqueKey record) => record -> ReaderT backend m (Either (Entity record) (Key record))
onlyOneUniqueDef :: (OnlyOneUniqueKey record, Monad proxy) => proxy record -> UniqueDef
class PersistStoreRead backend => PersistUniqueRead backend where
- getBy :: forall record (m :: Type -> Type). (MonadIO m, PersistRecordBackend record backend) => Unique record -> ReaderT backend m (Maybe (Entity record))
class (PersistUniqueRead backend, PersistStoreWrite backend) => PersistUniqueWrite backend where
- deleteBy :: forall record (m :: Type -> Type). (MonadIO m, PersistRecordBackend record backend) => Unique record -> ReaderT backend m ()
- insertUnique :: forall record (m :: Type -> Type). (MonadIO m, PersistRecordBackend record backend) => record -> ReaderT backend m (Maybe (Key record))
- upsert :: forall record (m :: Type -> Type). (MonadIO m, PersistRecordBackend record backend, OnlyOneUniqueKey record) => record -> [Update record] -> ReaderT backend m (Entity record)
- upsertBy :: forall record (m :: Type -> Type). (MonadIO m, PersistRecordBackend record backend) => Unique record -> record -> [Update record] -> ReaderT backend m (Entity record)
- putMany :: forall record (m :: Type -> Type). (MonadIO m, PersistRecordBackend record backend) => [record] -> ReaderT backend m ()
class PersistEntity record => OnlyOneUniqueKey record where
- onlyUniqueP :: record -> Unique record
type NoUniqueKeysError ty = (('Text "The entity " :<>: 'ShowType ty) :<>: 'Text " does not have any unique keys.") :$$: ('Text "The function you are trying to call requires a unique key " :<>: 'Text "to be defined on the entity.")
type MultipleUniqueKeysError ty = ((('Text "The entity " :<>: 'ShowType ty) :<>: 'Text " has multiple unique keys.") :$$: ('Text "The function you are trying to call requires only a single " :<>: 'Text "unique key.")) :$$: (('Text "There is probably a variant of the function with 'By' " :<>: 'Text "appended that will allow you to select a unique key ") :<>: 'Text "for the operation.")
class PersistEntity record => AtLeastOneUniqueKey record where
- requireUniquesP :: record -> NonEmpty (Unique record)
insertRecord :: forall record backend (m :: Type -> Type). (PersistEntityBackend record ~ BaseBackend backend, PersistEntity record, MonadIO m, PersistStoreWrite backend) => record -> ReaderT backend m record
getEntity :: forall e backend (m :: Type -> Type). (PersistStoreRead backend, PersistRecordBackend e backend, MonadIO m) => Key e -> ReaderT backend m (Maybe (Entity e))
insertEntity :: forall e backend (m :: Type -> Type). (PersistStoreWrite backend, PersistRecordBackend e backend, MonadIO m) => e -> ReaderT backend m (Entity e)
belongsToJust :: forall ent1 ent2 backend (m :: Type -> Type). (PersistStoreRead backend, PersistEntity ent1, PersistRecordBackend ent2 backend, MonadIO m) => (ent1 -> Key ent2) -> ent1 -> ReaderT backend m ent2
belongsTo :: forall ent1 ent2 backend (m :: Type -> Type). (PersistStoreRead backend, PersistEntity ent1, PersistRecordBackend ent2 backend, MonadIO m) => (ent1 -> Maybe (Key ent2)) -> ent1 -> ReaderT backend m (Maybe ent2)
getJustEntity :: forall record backend (m :: Type -> Type). (PersistEntityBackend record ~ BaseBackend backend, MonadIO m, PersistEntity record, PersistStoreRead backend) => Key record -> ReaderT backend m (Entity record)
getJust :: forall record backend (m :: Type -> Type). (PersistStoreRead backend, PersistRecordBackend record backend, MonadIO m) => Key record -> ReaderT backend m record
liftPersist :: (MonadIO m, MonadReader backend m) => ReaderT backend IO b -> m b
withCompatibleBackend :: forall sup sub (m :: Type -> Type) a. BackendCompatible sup sub => ReaderT sup m a -> ReaderT sub m a
withBaseBackend :: forall backend (m :: Type -> Type) a. HasPersistBackend backend => ReaderT (BaseBackend backend) m a -> ReaderT backend m a
type family BaseBackend backend
class HasPersistBackend backend where
- type BaseBackend backend
- persistBackend :: backend -> BaseBackend backend
class HasPersistBackend backend => IsPersistBackend backend
class BackendCompatible sup sub where
- projectBackend :: sub -> sup
type PersistRecordBackend record backend = (PersistEntity record, PersistEntityBackend record ~ BaseBackend backend)
class (PersistEntity record, PersistEntityBackend record ~ backend, PersistCore backend) => ToBackendKey backend record where
- toBackendKey :: Key record -> BackendKey backend
- fromBackendKey :: BackendKey backend -> Key record
data family BackendKey backend
class PersistCore backend where
- data BackendKey backend
class (Show (BackendKey backend), Read (BackendKey backend), Eq (BackendKey backend), Ord (BackendKey backend), PersistCore backend, PersistField (BackendKey backend), ToJSON (BackendKey backend), FromJSON (BackendKey backend)) => PersistStoreRead backend where
- get :: forall record (m :: Type -> Type). (MonadIO m, PersistRecordBackend record backend) => Key record -> ReaderT backend m (Maybe record)
- getMany :: forall record (m :: Type -> Type). (MonadIO m, PersistRecordBackend record backend) => [Key record] -> ReaderT backend m (Map (Key record) record)
class (Show (BackendKey backend), Read (BackendKey backend), Eq (BackendKey backend), Ord (BackendKey backend), PersistStoreRead backend, PersistField (BackendKey backend), ToJSON (BackendKey backend), FromJSON (BackendKey backend)) => PersistStoreWrite backend where
- insert :: forall record (m :: Type -> Type). (MonadIO m, PersistRecordBackend record backend) => record -> ReaderT backend m (Key record)
- insert_ :: forall record (m :: Type -> Type). (MonadIO m, PersistRecordBackend record backend) => record -> ReaderT backend m ()
- insertMany :: forall record (m :: Type -> Type). (MonadIO m, PersistRecordBackend record backend) => [record] -> ReaderT backend m [Key record]
- insertMany_ :: forall record (m :: Type -> Type). (MonadIO m, PersistRecordBackend record backend) => [record] -> ReaderT backend m ()
- insertEntityMany :: forall record (m :: Type -> Type). (MonadIO m, PersistRecordBackend record backend) => [Entity record] -> ReaderT backend m ()
- insertKey :: forall record (m :: Type -> Type). (MonadIO m, PersistRecordBackend record backend) => Key record -> record -> ReaderT backend m ()
- repsert :: forall record (m :: Type -> Type). (MonadIO m, PersistRecordBackend record backend) => Key record -> record -> ReaderT backend m ()
- repsertMany :: forall record (m :: Type -> Type). (MonadIO m, PersistRecordBackend record backend) => [(Key record, record)] -> ReaderT backend m ()
- replace :: forall record (m :: Type -> Type). (MonadIO m, PersistRecordBackend record backend) => Key record -> record -> ReaderT backend m ()
- delete :: forall record (m :: Type -> Type). (MonadIO m, PersistRecordBackend record backend) => Key record -> ReaderT backend m ()
- update :: forall record (m :: Type -> Type). (MonadIO m, PersistRecordBackend record backend) => Key record -> [Update record] -> ReaderT backend m ()
- updateGet :: forall record (m :: Type -> Type). (MonadIO m, PersistRecordBackend record backend) => Key record -> [Update record] -> ReaderT backend m record
fromPersistValueJSON :: FromJSON a => PersistValue -> Either Text a
toPersistValueJSON :: ToJSON a => a -> PersistValue
entityIdFromJSON :: (PersistEntity record, FromJSON record) => Value -> Parser (Entity record)
entityIdToJSON :: (PersistEntity record, ToJSON record) => Entity record -> Value
keyValueEntityFromJSON :: (PersistEntity record, FromJSON record) => Value -> Parser (Entity record)
keyValueEntityToJSON :: (PersistEntity record, ToJSON record) => Entity record -> Value
entityValues :: PersistEntity record => Entity record -> [PersistValue]
data family Unique record
data family EntityField record :: Type -> Type
data family Key record
type family PersistEntityBackend record
class (PersistField (Key record), ToJSON (Key record), FromJSON (Key record), Show (Key record), Read (Key record), Eq (Key record), Ord (Key record)) => PersistEntity record where
- type PersistEntityBackend record
- data Key record
- data EntityField record :: Type -> Type
- data Unique record
- keyToValues :: Key record -> [PersistValue]
- keyFromValues :: [PersistValue] -> Either Text (Key record)
- persistIdField :: EntityField record (Key record)
- entityDef :: proxy record -> EntityDef
- persistFieldDef :: EntityField record typ -> FieldDef
- toPersistFields :: record -> [SomePersistField]
- fromPersistValues :: [PersistValue] -> Either Text record
- persistUniqueKeys :: record -> [Unique record]
- persistUniqueToFieldNames :: Unique record -> NonEmpty (FieldNameHS, FieldNameDB)
- persistUniqueToValues :: Unique record -> [PersistValue]
- fieldLens :: EntityField record field -> forall (f :: Type -> Type). Functor f => (field -> f field) -> Entity record -> f (Entity record)
- keyFromRecordM :: Maybe (record -> Key record)
type family BackendSpecificUpdate backend record
data Update record
- = PersistField typ => Update {
  - updateField :: EntityField record typ
  - updateValue :: typ
  - updateUpdate :: PersistUpdate
  }
- | BackendUpdate (BackendSpecificUpdate (PersistEntityBackend record) record)
data SelectOpt record
- = Asc (EntityField record typ)
- | Desc (EntityField record typ)
- | OffsetBy Int
- | LimitTo Int
type family BackendSpecificFilter backend record
data Filter record
- = PersistField typ => Filter {
  - filterField :: EntityField record typ
  - filterValue :: FilterValue typ
  - filterFilter :: PersistFilter
  }
- | FilterAnd [Filter record]
- | FilterOr [Filter record]
- | BackendFilter (BackendSpecificFilter (PersistEntityBackend record) record)
data FilterValue typ where
- FilterValue :: forall typ. typ -> FilterValue typ
- FilterValues :: forall typ. [typ] -> FilterValue typ
- UnsafeValue :: forall a typ. PersistField a => a -> FilterValue typ
data Entity record = Entity {
- entityKey :: Key record
- entityVal :: record
}
class SymbolToField (sym :: Symbol) rec typ | sym rec -> typ where
- symbolToField :: EntityField rec typ
getPersistMap :: PersistValue -> Either Text [(Text, PersistValue)]
class PersistField a where
- toPersistValue :: a -> PersistValue
- fromPersistValue :: PersistValue -> Either Text a
newtype OverflowNatural = OverflowNatural {
- unOverflowNatural :: Natural
}
data SomePersistField = PersistField a => SomePersistField a
overEntityFields :: ([FieldDef] -> [FieldDef]) -> EntityDef -> EntityDef
getEntityKeyFields :: EntityDef -> NonEmpty FieldDef
setEntityIdDef :: EntityIdDef -> EntityDef -> EntityDef
setEntityId :: FieldDef -> EntityDef -> EntityDef
getEntityIdField :: EntityDef -> Maybe FieldDef
getEntityId :: EntityDef -> EntityIdDef
isEntitySum :: EntityDef -> Bool
getEntityFieldsDatabase :: EntityDef -> [FieldDef]
getEntityFields :: EntityDef -> [FieldDef]
getEntityForeignDefs :: EntityDef -> [ForeignDef]
getEntityComments :: EntityDef -> Maybe Text
setEntityDBName :: EntityNameDB -> EntityDef -> EntityDef
getEntityExtra :: EntityDef -> Map Text [[Text]]
getEntityDBName :: EntityDef -> EntityNameDB
getEntityHaskellName :: EntityDef -> EntityNameHS
getEntityUniques :: EntityDef -> [UniqueDef]
isFieldMaybe :: FieldDef -> Bool
isFieldNullable :: FieldDef -> IsNullable
addFieldAttr :: FieldAttr -> FieldDef -> FieldDef
overFieldAttrs :: ([FieldAttr] -> [FieldAttr]) -> FieldDef -> FieldDef
setFieldAttrs :: [FieldAttr] -> FieldDef -> FieldDef
renderCascadeAction :: CascadeAction -> Text
renderFieldCascade :: FieldCascade -> Text
noCascade :: FieldCascade
isHaskellField :: FieldDef -> Bool
isFieldNotGenerated :: FieldDef -> Bool
parseFieldAttrs :: [Text] -> [FieldAttr]
keyAndEntityFields :: EntityDef -> NonEmpty FieldDef
entityPrimary :: EntityDef -> Maybe CompositeDef
entitiesPrimary :: EntityDef -> NonEmpty FieldDef
fieldAttrsContainsNullable :: [FieldAttr] -> IsNullable
data Checkmark
- = Active
- | Inactive
data IsNullable
- = Nullable !WhyNullable
- | NotNullable
data WhyNullable
- = ByMaybeAttr
- | ByNullableAttr
data EntityDef
data EntityIdDef
- = EntityIdField !FieldDef
- | EntityIdNaturalKey !CompositeDef
type ExtraLine = [Text]
type Attr = Text
data FieldAttr
- = FieldAttrMaybe
- | FieldAttrNullable
- | FieldAttrMigrationOnly
- | FieldAttrSafeToRemove
- | FieldAttrNoreference
- | FieldAttrReference Text
- | FieldAttrConstraint Text
- | FieldAttrDefault Text
- | FieldAttrSqltype Text
- | FieldAttrMaxlen Integer
- | FieldAttrSql Text
- | FieldAttrOther Text
data FieldType
- = FTTypeCon (Maybe Text) Text
- | FTTypePromoted Text
- | FTApp FieldType FieldType
- | FTList FieldType
data ReferenceDef
- = NoReference
- | ForeignRef !EntityNameHS
- | EmbedRef EntityNameHS
- | CompositeRef CompositeDef
- | SelfReference
data EmbedEntityDef = EmbedEntityDef {
- embeddedHaskell :: EntityNameHS
- embeddedFields :: [EmbedFieldDef]
}
data EmbedFieldDef = EmbedFieldDef {
- emFieldDB :: FieldNameDB
- emFieldEmbed :: Maybe (Either SelfEmbed EntityNameHS)
}
data UniqueDef = UniqueDef {
- uniqueHaskell :: !ConstraintNameHS
- uniqueDBName :: !ConstraintNameDB
- uniqueFields :: !(NonEmpty (FieldNameHS, FieldNameDB))
- uniqueAttrs :: ![Attr]
}
data CompositeDef = CompositeDef {
- compositeFields :: !(NonEmpty FieldDef)
- compositeAttrs :: ![Attr]
}
type ForeignFieldDef = (FieldNameHS, FieldNameDB)
data ForeignDef = ForeignDef {
- foreignRefTableHaskell :: !EntityNameHS
- foreignRefTableDBName :: !EntityNameDB
- foreignConstraintNameHaskell :: !ConstraintNameHS
- foreignConstraintNameDBName :: !ConstraintNameDB
- foreignFieldCascade :: !FieldCascade
- foreignFields :: ![(ForeignFieldDef, ForeignFieldDef)]
- foreignAttrs :: ![Attr]
- foreignNullable :: Bool
- foreignToPrimary :: Bool
}
data FieldCascade = FieldCascade {
- fcOnUpdate :: !(Maybe CascadeAction)
- fcOnDelete :: !(Maybe CascadeAction)
}
data CascadeAction
- = Cascade
- | Restrict
- | SetNull
- | SetDefault
data PersistException
- = PersistError Text
- | PersistMarshalError Text
- | PersistInvalidField Text
- | PersistForeignConstraintUnmet Text
- | PersistMongoDBError Text
- | PersistMongoDBUnsupported Text
data SqlType
- = SqlString
- | SqlInt32
- | SqlInt64
- | SqlReal
- | SqlNumeric Word32 Word32
- | SqlBool
- | SqlDay
- | SqlTime
- | SqlDayTime
- | SqlBlob
- | SqlOther Text
data PersistFilter
- = Eq
- | Ne
- | Gt
- | Lt
- | Ge
- | Le
- | In
- | NotIn
- | BackendSpecificFilter Text
data UpdateException
- = KeyNotFound String
- | UpsertError String
data PersistUpdate
- = Assign
- | Add
- | Subtract
- | Multiply
- | Divide
- | BackendSpecificUpdate Text
data FieldDef = FieldDef {
- fieldHaskell :: !FieldNameHS
- fieldDB :: !FieldNameDB
- fieldType :: !FieldType
- fieldSqlType :: !SqlType
- fieldAttrs :: ![FieldAttr]
- fieldStrict :: !Bool
- fieldReference :: !ReferenceDef
- fieldCascade :: !FieldCascade
- fieldComments :: !(Maybe Text)
- fieldGenerated :: !(Maybe Text)
- fieldIsImplicitIdColumn :: !Bool
}
fromPersistValueText :: PersistValue -> Either Text Text
data PersistValue where
- PersistText Text
- PersistByteString ByteString
- PersistInt64 Int64
- PersistDouble Double
- PersistRational Rational
- PersistBool Bool
- PersistDay Day
- PersistTimeOfDay TimeOfDay
- PersistUTCTime UTCTime
- PersistNull
- PersistList [PersistValue]
- PersistMap [(Text, PersistValue)]
- PersistObjectId ByteString
- PersistArray [PersistValue]
- PersistLiteral_ LiteralType ByteString
- pattern PersistDbSpecific :: ByteString -> PersistValue
- pattern PersistLiteralEscaped :: ByteString -> PersistValue
- pattern PersistLiteral :: ByteString -> PersistValue
data LiteralType
- = Escaped
- | Unescaped
- | DbSpecific
class DatabaseName a where
- escapeWith :: (Text -> str) -> a -> str
newtype FieldNameDB = FieldNameDB {
- unFieldNameDB :: Text
}
newtype FieldNameHS = FieldNameHS {
- unFieldNameHS :: Text
}
newtype EntityNameHS = EntityNameHS {
- unEntityNameHS :: Text
}
newtype EntityNameDB = EntityNameDB {
- unEntityNameDB :: Text
}
newtype ConstraintNameDB = ConstraintNameDB {
- unConstraintNameDB :: Text
}
newtype ConstraintNameHS = ConstraintNameHS {
- unConstraintNameHS :: Text
}
type family PersistConfigPool c
type family PersistConfigBackend c :: (Type -> Type) -> Type -> Type
class PersistConfig c where
- type PersistConfigBackend c :: (Type -> Type) -> Type -> Type
- type PersistConfigPool c
- loadConfig :: Value -> Parser c
- applyEnv :: c -> IO c
- createPoolConfig :: c -> IO (PersistConfigPool c)
- runPool :: MonadUnliftIO m => c -> PersistConfigBackend c m a -> PersistConfigPool c -> m a
mkMessageVariant :: String -> String -> FilePath -> Lang -> Q [Dec]
mkMessageFor :: String -> String -> FilePath -> Lang -> Q [Dec]
mkMessage :: String -> FilePath -> Lang -> Q [Dec]
class ToMessage a where
- toMessage :: a -> Text
class RenderMessage master message where
- renderMessage :: master -> [Lang] -> message -> Text
type Lang = Text
data SomeMessage master = RenderMessage master msg => SomeMessage msg
cassius :: QuasiQuoter
xhamlet :: QuasiQuoter
hamlet :: QuasiQuoter
shamlet :: QuasiQuoter
type HtmlUrl url = Render url -> Html
lucius :: QuasiQuoter
renderCssUrl :: (url -> [(Text, Text)] -> Text) -> CssUrl url -> Text
type CssUrl url = (url -> [(Text, Text)] -> Text) -> Css
julius :: QuasiQuoter
renderJavascriptUrl :: (url -> [(Text, Text)] -> Text) -> JavascriptUrl url -> Text
type JavascriptUrl url = (url -> [(Text, Text)] -> Text) -> Javascript
readsTime :: ParseTime t => TimeLocale -> String -> ReadS t
readTime :: ParseTime t => TimeLocale -> String -> String -> t
readPTime :: ParseTime t => Bool -> TimeLocale -> String -> ReadP t
readSTime :: ParseTime t => Bool -> TimeLocale -> String -> ReadS t
parseTimeOrError :: ParseTime t => Bool -> TimeLocale -> String -> String -> t
parseTimeM :: (MonadFail m, ParseTime t) => Bool -> TimeLocale -> String -> String -> m t
utcToLocalZonedTime :: UTCTime -> IO ZonedTime
getZonedTime :: IO ZonedTime
zonedTimeToUTC :: ZonedTime -> UTCTime
utcToZonedTime :: TimeZone -> UTCTime -> ZonedTime
data ZonedTime = ZonedTime {
- zonedTimeToLocalTime :: LocalTime
- zonedTimeZone :: TimeZone
}
formatTime :: FormatTime t => TimeLocale -> String -> t -> String
class FormatTime t
class ParseTime t
rfc822DateFormat :: String
iso8601DateFormat :: Maybe String -> String
defaultTimeLocale :: TimeLocale
data TimeLocale = TimeLocale {
- wDays :: [(String, String)]
- months :: [(String, String)]
- amPm :: (String, String)
- dateTimeFmt :: String
- dateFmt :: String
- timeFmt :: String
- time12Fmt :: String
- knownTimeZones :: [TimeZone]
}
localTimeToUT1 :: Rational -> LocalTime -> UniversalTime
ut1ToLocalTime :: Rational -> UniversalTime -> LocalTime
localTimeToUTC :: TimeZone -> LocalTime -> UTCTime
utcToLocalTime :: TimeZone -> UTCTime -> LocalTime
diffLocalTime :: LocalTime -> LocalTime -> NominalDiffTime
addLocalTime :: NominalDiffTime -> LocalTime -> LocalTime
data LocalTime = LocalTime {
- localDay :: Day
- localTimeOfDay :: TimeOfDay
}
timeOfDayToDayFraction :: TimeOfDay -> Rational
dayFractionToTimeOfDay :: Rational -> TimeOfDay
timeOfDayToTime :: TimeOfDay -> DiffTime
timeToTimeOfDay :: DiffTime -> TimeOfDay
localToUTCTimeOfDay :: TimeZone -> TimeOfDay -> (Integer, TimeOfDay)
utcToLocalTimeOfDay :: TimeZone -> TimeOfDay -> (Integer, TimeOfDay)
daysAndTimeOfDayToTime :: Integer -> TimeOfDay -> NominalDiffTime
timeToDaysAndTimeOfDay :: NominalDiffTime -> (Integer, TimeOfDay)
makeTimeOfDayValid :: Int -> Int -> Pico -> Maybe TimeOfDay
midday :: TimeOfDay
midnight :: TimeOfDay
data TimeOfDay = TimeOfDay {
- todHour :: Int
- todMin :: Int
- todSec :: Pico
}
getCurrentTimeZone :: IO TimeZone
getTimeZone :: UTCTime -> IO TimeZone
utc :: TimeZone
timeZoneOffsetString :: TimeZone -> String
timeZoneOffsetString' :: Maybe Char -> TimeZone -> String
hoursToTimeZone :: Int -> TimeZone
minutesToTimeZone :: Int -> TimeZone
data TimeZone = TimeZone {
- timeZoneMinutes :: Int
- timeZoneSummerOnly :: Bool
- timeZoneName :: String
}
scaleCalendarDiffTime :: Integer -> CalendarDiffTime -> CalendarDiffTime
calendarTimeTime :: NominalDiffTime -> CalendarDiffTime
calendarTimeDays :: CalendarDiffDays -> CalendarDiffTime
data CalendarDiffTime = CalendarDiffTime {
- ctMonths :: Integer
- ctTime :: NominalDiffTime
}
diffUTCTime :: UTCTime -> UTCTime -> NominalDiffTime
addUTCTime :: NominalDiffTime -> UTCTime -> UTCTime
getCurrentTime :: IO UTCTime
newtype UniversalTime = ModJulianDate {
- getModJulianDate :: Rational
}
getTime_resolution :: DiffTime
nominalDay :: NominalDiffTime
nominalDiffTimeToSeconds :: NominalDiffTime -> Pico
secondsToNominalDiffTime :: Pico -> NominalDiffTime
data NominalDiffTime
diffTimeToPicoseconds :: DiffTime -> Integer
picosecondsToDiffTime :: Integer -> DiffTime
secondsToDiffTime :: Integer -> DiffTime
data DiffTime
dayOfWeek :: Day -> DayOfWeek
data DayOfWeek
- = Monday
- | Tuesday
- | Wednesday
- | Thursday
- | Friday
- | Saturday
- | Sunday
diffGregorianDurationRollOver :: Day -> Day -> CalendarDiffDays
diffGregorianDurationClip :: Day -> Day -> CalendarDiffDays
addGregorianDurationRollOver :: CalendarDiffDays -> Day -> Day
addGregorianDurationClip :: CalendarDiffDays -> Day -> Day
addGregorianYearsRollOver :: Integer -> Day -> Day
addGregorianYearsClip :: Integer -> Day -> Day
addGregorianMonthsRollOver :: Integer -> Day -> Day
addGregorianMonthsClip :: Integer -> Day -> Day
gregorianMonthLength :: Integer -> Int -> Int
showGregorian :: Day -> String
fromGregorianValid :: Integer -> Int -> Int -> Maybe Day
fromGregorian :: Integer -> Int -> Int -> Day
toGregorian :: Day -> (Integer, Int, Int)
isLeapYear :: Integer -> Bool
diffDays :: Day -> Day -> Integer
addDays :: Integer -> Day -> Day
newtype Day = ModifiedJulianDay {
- toModifiedJulianDay :: Integer
}
scaleCalendarDiffDays :: Integer -> CalendarDiffDays -> CalendarDiffDays
calendarYear :: CalendarDiffDays
calendarMonth :: CalendarDiffDays
calendarWeek :: CalendarDiffDays
calendarDay :: CalendarDiffDays
data CalendarDiffDays = CalendarDiffDays {
- cdMonths :: Integer
- cdDays :: Integer
}
type Application = Request -> (Response -> IO ResponseReceived) -> IO ResponseReceived
newtype DBRunner site = DBRunner {
- runDBRunner :: forall a. YesodDB site a -> HandlerFor site a
}
class YesodPersist site => YesodPersistRunner site where
- getDBRunner :: HandlerFor site (DBRunner site, HandlerFor site ())
class Monad (YesodDB site) => YesodPersist site where
- type YesodPersistBackend site
- runDB :: YesodDB site a -> HandlerFor site a
type family YesodPersistBackend site
type YesodDB site = ReaderT (YesodPersistBackend site) (HandlerFor site)
defaultRunDB :: PersistConfig c => (site -> c) -> (site -> PersistConfigPool c) -> PersistConfigBackend c (HandlerFor site) a -> HandlerFor site a
defaultGetDBRunner :: (IsSqlBackend backend, YesodPersistBackend site ~ backend) => (site -> Pool backend) -> HandlerFor site (DBRunner site, HandlerFor site ())
runDBSource :: YesodPersistRunner site => ConduitT () a (YesodDB site) () -> ConduitT () a (HandlerFor site) ()
respondSourceDB :: YesodPersistRunner site => ContentType -> ConduitT () (Flush Builder) (YesodDB site) () -> HandlerFor site TypedContent
get404 :: forall (m :: Type -> Type) backend val. (MonadIO m, PersistStoreRead backend, PersistRecordBackend val backend) => Key val -> ReaderT backend m val
getBy404 :: forall backend val (m :: Type -> Type). (PersistUniqueRead backend, PersistRecordBackend val backend, MonadIO m) => Unique val -> ReaderT backend m (Entity val)
insert400 :: forall (m :: Type -> Type) backend val. (MonadIO m, PersistUniqueWrite backend, PersistRecordBackend val backend) => val -> ReaderT backend m (Key val)
insert400_ :: forall (m :: Type -> Type) backend val. (MonadIO m, PersistUniqueWrite backend, PersistRecordBackend val backend) => val -> ReaderT backend m ()
data FormMessage
- = MsgInvalidInteger Text
- | MsgInvalidNumber Text
- | MsgInvalidEntry Text
- | MsgInvalidUrl Text
- | MsgInvalidEmail Text
- | MsgInvalidTimeFormat
- | MsgInvalidHour Text
- | MsgInvalidMinute Text
- | MsgInvalidSecond Text
- | MsgInvalidDay
- | MsgCsrfWarning
- | MsgValueRequired
- | MsgInputNotFound Text
- | MsgSelectNone
- | MsgInvalidBool Text
- | MsgBoolYes
- | MsgBoolNo
- | MsgDelete
data Field (m :: Type -> Type) a = Field {
- fieldParse :: [Text] -> [FileInfo] -> m (Either (SomeMessage (HandlerSite m)) (Maybe a))
- fieldView :: FieldViewFunc m a
- fieldEnctype :: Enctype
}
type FieldViewFunc (m :: Type -> Type) a = Text -> Text -> [(Text, Text)] -> Either Text a -> Bool -> WidgetFor (HandlerSite m) ()
data FieldView site = FieldView {
- fvLabel :: Markup
- fvTooltip :: Maybe Markup
- fvId :: Text
- fvInput :: WidgetFor site ()
- fvErrors :: Maybe Markup
- fvRequired :: Bool
}
data FieldSettings master = FieldSettings {
- fsLabel :: SomeMessage master
- fsTooltip :: Maybe (SomeMessage master)
- fsId :: Maybe Text
- fsName :: Maybe Text
- fsAttrs :: [(Text, Text)]
}
newtype AForm (m :: Type -> Type) a = AForm {
- unAForm :: (HandlerSite m, [Text]) -> Maybe (Env, FileEnv) -> Ints -> m (FormResult a, [FieldView (HandlerSite m)] -> [FieldView (HandlerSite m)], Ints, Enctype)
}
type MForm (m :: Type -> Type) a = RWST (Maybe (Env, FileEnv), HandlerSite m, [Lang]) Enctype Ints m a
type WForm (m :: Type -> Type) a = MForm (WriterT [FieldView (HandlerSite m)] m) a
type FileEnv = Map Text [FileInfo]
type Env = Map Text [Text]
data Ints
- = IntCons Int Ints
- | IntSingle Int
data Enctype
- = UrlEncoded
- | Multipart
data FormResult a
- = FormMissing
- | FormFailure [Text]
- | FormSuccess a
newtype FormInput (m :: Type -> Type) a = FormInput {
- unFormInput :: HandlerSite m -> [Text] -> Env -> FileEnv -> m (Either DText a)
}
ireq :: forall (m :: Type -> Type) a. (Monad m, RenderMessage (HandlerSite m) FormMessage) => Field m a -> Text -> FormInput m a
iopt :: forall (m :: Type -> Type) a. Monad m => Field m a -> Text -> FormInput m (Maybe a)
runInputGet :: MonadHandler m => FormInput m a -> m a
runInputGetResult :: MonadHandler m => FormInput m a -> m (FormResult a)
runInputPost :: MonadHandler m => FormInput m a -> m a
runInputPostResult :: MonadHandler m => FormInput m a -> m (FormResult a)
type FormRender (m :: Type -> Type) a = AForm m a -> Markup -> MForm m (FormResult a, WidgetFor (HandlerSite m) ())
newFormIdent :: forall (m :: Type -> Type). Monad m => MForm m Text
formToAForm :: forall (m :: Type -> Type) site a. (HandlerSite m ~ site, Monad m) => MForm m (FormResult a, [FieldView site]) -> AForm m a
aFormToForm :: forall (m :: Type -> Type) site a. (Monad m, HandlerSite m ~ site) => AForm m a -> MForm m (FormResult a, [FieldView site] -> [FieldView site])
askParams :: forall (m :: Type -> Type). Monad m => MForm m (Maybe Env)
askFiles :: forall (m :: Type -> Type). Monad m => MForm m (Maybe FileEnv)
wreq :: forall site (m :: Type -> Type) a. (RenderMessage site FormMessage, HandlerSite m ~ site, MonadHandler m) => Field m a -> FieldSettings site -> Maybe a -> WForm m (FormResult a)
wreqMsg :: forall site msg (m :: Type -> Type) a. (RenderMessage site msg, HandlerSite m ~ site, MonadHandler m) => Field m a -> FieldSettings site -> msg -> Maybe a -> WForm m (FormResult a)
wopt :: forall (m :: Type -> Type) site a. (MonadHandler m, HandlerSite m ~ site) => Field m a -> FieldSettings site -> Maybe (Maybe a) -> WForm m (FormResult (Maybe a))
wFormToAForm :: forall (m :: Type -> Type) a. MonadHandler m => WForm m (FormResult a) -> AForm m a
wFormToMForm :: forall (m :: Type -> Type) site a. (MonadHandler m, HandlerSite m ~ site) => WForm m a -> MForm m (a, [FieldView site])
mFormToWForm :: forall (m :: Type -> Type) site a. (MonadHandler m, HandlerSite m ~ site) => MForm m (a, FieldView site) -> WForm m a
mreq :: forall site (m :: Type -> Type) a. (RenderMessage site FormMessage, HandlerSite m ~ site, MonadHandler m) => Field m a -> FieldSettings site -> Maybe a -> MForm m (FormResult a, FieldView site)
mreqMsg :: forall site msg (m :: Type -> Type) a. (RenderMessage site msg, HandlerSite m ~ site, MonadHandler m) => Field m a -> FieldSettings site -> msg -> Maybe a -> MForm m (FormResult a, FieldView site)
mopt :: forall site (m :: Type -> Type) a. (site ~ HandlerSite m, MonadHandler m) => Field m a -> FieldSettings site -> Maybe (Maybe a) -> MForm m (FormResult (Maybe a), FieldView site)
areq :: forall site (m :: Type -> Type) a. (RenderMessage site FormMessage, HandlerSite m ~ site, MonadHandler m) => Field m a -> FieldSettings site -> Maybe a -> AForm m a
areqMsg :: forall site msg (m :: Type -> Type) a. (RenderMessage site msg, HandlerSite m ~ site, MonadHandler m) => Field m a -> FieldSettings site -> msg -> Maybe a -> AForm m a
aopt :: forall (m :: Type -> Type) a. MonadHandler m => Field m a -> FieldSettings (HandlerSite m) -> Maybe (Maybe a) -> AForm m (Maybe a)
runFormPost :: (RenderMessage (HandlerSite m) FormMessage, MonadResource m, MonadHandler m) => (Markup -> MForm m (FormResult a, xml)) -> m ((FormResult a, xml), Enctype)
generateFormPost :: (RenderMessage (HandlerSite m) FormMessage, MonadHandler m) => (Markup -> MForm m (FormResult a, xml)) -> m (xml, Enctype)
runFormPostNoToken :: MonadHandler m => (Markup -> MForm m a) -> m (a, Enctype)
runFormGet :: MonadHandler m => (Markup -> MForm m a) -> m (a, Enctype)
generateFormGet' :: MonadHandler m => (Markup -> MForm m (FormResult a, xml)) -> m (xml, Enctype)
generateFormGet :: MonadHandler m => (Markup -> MForm m a) -> m (a, Enctype)
identifyForm :: forall (m :: Type -> Type) a. Monad m => Text -> (Markup -> MForm m (FormResult a, WidgetFor (HandlerSite m) ())) -> Markup -> MForm m (FormResult a, WidgetFor (HandlerSite m) ())
renderTable :: forall (m :: Type -> Type) a. Monad m => FormRender m a
renderDivs :: forall (m :: Type -> Type) a. Monad m => FormRender m a
renderDivsNoLabels :: forall (m :: Type -> Type) a. Monad m => FormRender m a
renderBootstrap2 :: forall (m :: Type -> Type) a. Monad m => FormRender m a
renderBootstrap :: forall (m :: Type -> Type) a. Monad m => FormRender m a
check :: forall (m :: Type -> Type) msg a. (Monad m, RenderMessage (HandlerSite m) msg) => (a -> Either msg a) -> Field m a -> Field m a
checkBool :: forall (m :: Type -> Type) msg a. (Monad m, RenderMessage (HandlerSite m) msg) => (a -> Bool) -> msg -> Field m a -> Field m a
checkM :: (Monad m, RenderMessage (HandlerSite m) msg) => (a -> m (Either msg a)) -> Field m a -> Field m a
checkMMap :: (Monad m, RenderMessage (HandlerSite m) msg) => (a -> m (Either msg b)) -> (b -> a) -> Field m a -> Field m b
customErrorMessage :: forall (m :: Type -> Type) a. Monad m => SomeMessage (HandlerSite m) -> Field m a -> Field m a
fieldSettingsLabel :: RenderMessage site msg => msg -> FieldSettings site
parseHelper :: (Monad m, RenderMessage site FormMessage) => (Text -> Either FormMessage a) -> [Text] -> [FileInfo] -> m (Either (SomeMessage site) (Maybe a))
parseHelperGen :: (Monad m, RenderMessage site msg) => (Text -> Either msg a) -> [Text] -> [FileInfo] -> m (Either (SomeMessage site) (Maybe a))
convertField :: forall (m :: Type -> Type) a b. Functor m => (a -> b) -> (b -> a) -> Field m a -> Field m b
removeClass :: Text -> [(Text, Text)] -> [(Text, Text)]
addClass :: Text -> [(Text, Text)] -> [(Text, Text)]
data Option a = Option {
- optionDisplay :: Text
- optionInternalValue :: a
- optionExternalValue :: Text
}
data OptionList a
- = OptionList {
  - olOptions :: [Option a]
  - olReadExternal :: Text -> Maybe a
  }
- | OptionListGrouped {
  - olOptionsGrouped :: [(Text, [Option a])]
  - olReadExternalGrouped :: Text -> Maybe a
  }
type AutoFocus = Bool
newtype Textarea = Textarea {
- unTextarea :: Text
}
defaultFormMessage :: FormMessage -> Text
intField :: forall (m :: Type -> Type) i. (Monad m, Integral i, RenderMessage (HandlerSite m) FormMessage) => Field m i
doubleField :: forall (m :: Type -> Type). (Monad m, RenderMessage (HandlerSite m) FormMessage) => Field m Double
dayField :: forall (m :: Type -> Type). (Monad m, RenderMessage (HandlerSite m) FormMessage) => Field m Day
timeField :: forall (m :: Type -> Type). (Monad m, RenderMessage (HandlerSite m) FormMessage) => Field m TimeOfDay
timeFieldTypeTime :: forall (m :: Type -> Type). (Monad m, RenderMessage (HandlerSite m) FormMessage) => Field m TimeOfDay
timeFieldTypeText :: forall (m :: Type -> Type). (Monad m, RenderMessage (HandlerSite m) FormMessage) => Field m TimeOfDay
htmlField :: forall (m :: Type -> Type). (Monad m, RenderMessage (HandlerSite m) FormMessage) => Field m Html
textareaField :: forall (m :: Type -> Type). (Monad m, RenderMessage (HandlerSite m) FormMessage) => Field m Textarea
hiddenField :: forall (m :: Type -> Type) p. (Monad m, PathPiece p, RenderMessage (HandlerSite m) FormMessage) => Field m p
textField :: forall (m :: Type -> Type). (Monad m, RenderMessage (HandlerSite m) FormMessage) => Field m Text
passwordField :: forall (m :: Type -> Type). (Monad m, RenderMessage (HandlerSite m) FormMessage) => Field m Text
parseDate :: String -> Either FormMessage Day
parseTime :: Text -> Either FormMessage TimeOfDay
emailField :: forall (m :: Type -> Type). (Monad m, RenderMessage (HandlerSite m) FormMessage) => Field m Text
multiEmailField :: forall (m :: Type -> Type). (Monad m, RenderMessage (HandlerSite m) FormMessage) => Field m [Text]
searchField :: forall (m :: Type -> Type). (Monad m, RenderMessage (HandlerSite m) FormMessage) => AutoFocus -> Field m Text
urlField :: forall (m :: Type -> Type). (Monad m, RenderMessage (HandlerSite m) FormMessage) => Field m Text
selectFieldList :: (Eq a, RenderMessage site FormMessage, RenderMessage site msg) => [(msg, a)] -> Field (HandlerFor site) a
selectFieldListGrouped :: (Eq a, RenderMessage site FormMessage, RenderMessage site msg) => [(msg, [(msg, a)])] -> Field (HandlerFor site) a
selectField :: (Eq a, RenderMessage site FormMessage) => HandlerFor site (OptionList a) -> Field (HandlerFor site) a
multiSelectFieldList :: (Eq a, RenderMessage site msg) => [(msg, a)] -> Field (HandlerFor site) [a]
multiSelectField :: Eq a => HandlerFor site (OptionList a) -> Field (HandlerFor site) [a]
radioFieldList :: (Eq a, RenderMessage site FormMessage, RenderMessage site msg) => [(msg, a)] -> Field (HandlerFor site) a
checkboxesFieldList :: (Eq a, RenderMessage site msg) => [(msg, a)] -> Field (HandlerFor site) [a]
checkboxesField :: Eq a => HandlerFor site (OptionList a) -> Field (HandlerFor site) [a]
radioField :: (Eq a, RenderMessage site FormMessage) => HandlerFor site (OptionList a) -> Field (HandlerFor site) a
boolField :: forall (m :: Type -> Type). (Monad m, RenderMessage (HandlerSite m) FormMessage) => Field m Bool
checkBoxField :: forall (m :: Type -> Type). Monad m => Field m Bool
mkOptionList :: [Option a] -> OptionList a
mkOptionListGrouped :: [(Text, [Option a])] -> OptionList a
optionsPairs :: (MonadHandler m, RenderMessage (HandlerSite m) msg) => [(msg, a)] -> m (OptionList a)
optionsPairsGrouped :: (MonadHandler m, RenderMessage (HandlerSite m) msg) => [(msg, [(msg, a)])] -> m (OptionList a)
optionsEnum :: (MonadHandler m, Show a, Enum a, Bounded a) => m (OptionList a)
optionsPersist :: (YesodPersist site, PersistQueryRead backend, PathPiece (Key a), RenderMessage site msg, YesodPersistBackend site ~ backend, PersistRecordBackend a backend) => [Filter a] -> [SelectOpt a] -> (a -> msg) -> HandlerFor site (OptionList (Entity a))
optionsPersistKey :: (YesodPersist site, PersistQueryRead backend, PathPiece (Key a), RenderMessage site msg, backend ~ YesodPersistBackend site, PersistRecordBackend a backend) => [Filter a] -> [SelectOpt a] -> (a -> msg) -> HandlerFor site (OptionList (Key a))
selectFieldHelper :: (Eq a, RenderMessage site FormMessage) => (Text -> Text -> [(Text, Text)] -> WidgetFor site () -> WidgetFor site ()) -> (Text -> Text -> Bool -> WidgetFor site ()) -> (Text -> Text -> [(Text, Text)] -> Text -> Bool -> Text -> WidgetFor site ()) -> Maybe (Text -> WidgetFor site ()) -> HandlerFor site (OptionList a) -> Field (HandlerFor site) a
fileField :: forall (m :: Type -> Type). Monad m => Field m FileInfo
fileAFormReq :: forall (m :: Type -> Type). (MonadHandler m, RenderMessage (HandlerSite m) FormMessage) => FieldSettings (HandlerSite m) -> AForm m FileInfo
fileAFormOpt :: forall (m :: Type -> Type). MonadHandler m => FieldSettings (HandlerSite m) -> AForm m (Maybe FileInfo)
formatW3 :: UTCTime -> Text
formatRFC1123 :: UTCTime -> Text
formatRFC822 :: UTCTime -> Text
class RenderRoute a => RouteAttrs a where
- routeAttrs :: Route a -> Set Text
class RenderRoute a => ParseRoute a where
- parseRoute :: ([Text], [(Text, Text)]) -> Maybe (Route a)
class Eq (Route a) => RenderRoute a where
- renderRoute :: Route a -> ([Text], [(Text, Text)])
data family Route a
data SubHandlerFor sub master a
data Header
- = AddCookie !SetCookie
- | DeleteCookie !ByteString !ByteString
- | Header !(CI ByteString) !ByteString
data ErrorResponse
- = NotFound
- | InternalError !Text
- | InvalidArgs ![Text]
- | NotAuthenticated
- | PermissionDenied !Text
- | BadMethod !Method
newtype DontFullyEvaluate a = DontFullyEvaluate {
- unDontFullyEvaluate :: a
}
type ContentType = ByteString
newtype RepXml = RepXml Content
newtype RepPlain = RepPlain Content
newtype RepJson = RepJson Content
type RepHtml = Html
data TypedContent = TypedContent !ContentType !Content
data Content
- = ContentBuilder !Builder !(Maybe Int)
- | ContentSource !(ConduitT () (Flush Builder) (ResourceT IO) ())
- | ContentFile !FilePath !(Maybe FilePart)
- | ContentDontEvaluate !Content
data PageContent url = PageContent {
- pageTitle :: !Html
- pageHead :: !(HtmlUrl url)
- pageBody :: !(HtmlUrl url)
}
newtype CssBuilder = CssBuilder {
- unCssBuilder :: Builder
}
data WidgetFor site a
data HandlerFor site a
newtype WaiSubsiteWithAuth = WaiSubsiteWithAuth {
- runWaiSubsiteWithAuth :: Application
}
newtype WaiSubsite = WaiSubsite {
- runWaiSubsite :: Application
}
type Texts = [Text]
type BottomOfHeadAsync master = [Text] -> Maybe (HtmlUrl (Route master)) -> HtmlUrl (Route master)
data ScriptLoadPosition master
- = BottomOfBody
- | BottomOfHeadBlocking
- | BottomOfHeadAsync !(BottomOfHeadAsync master)
data AuthResult
- = Authorized
- | AuthenticationRequired
- | Unauthorized !Text
data Approot master
- = ApprootRelative
- | ApprootStatic !Text
- | ApprootMaster !(master -> Text)
- | ApprootRequest !(master -> Request -> Text)
data FileUpload
- = FileUploadMemory !(BackEnd ByteString)
- | FileUploadDisk !(InternalState -> BackEnd FilePath)
- | FileUploadSource !(BackEnd (ConduitT () ByteString (ResourceT IO) ()))
data FileInfo
type RequestBodyContents = ([(Text, Text)], [(Text, FileInfo)])
data YesodRequest = YesodRequest {
- reqGetParams :: ![(Text, Text)]
- reqCookies :: ![(Text, Text)]
- reqWaiRequest :: !Request
- reqLangs :: ![Text]
- reqToken :: !(Maybe Text)
- reqSession :: !SessionMap
- reqAccept :: ![ContentType]
}
newtype SessionBackend = SessionBackend {
- sbLoadSession :: Request -> IO (SessionMap, SaveSession)
}
type SessionMap = Map Text ByteString
clientSessionDateCacher :: NominalDiffTime -> IO (IO ClientSessionDateCache, IO ())
class ToContent a => ToTypedContent a where
- toTypedContent :: a -> TypedContent
class ToTypedContent a => HasContentType a where
- getContentType :: Monad m => m a -> ContentType
class ToFlushBuilder a where
- toFlushBuilder :: a -> Flush Builder
class ToContent a where
- toContent :: a -> Content
emptyContent :: Content
repJson :: ToContent a => a -> RepJson
repPlain :: ToContent a => a -> RepPlain
repXml :: ToContent a => a -> RepXml
typeHtml :: ContentType
typePlain :: ContentType
typeJson :: ContentType
typeXml :: ContentType
typeAtom :: ContentType
typeRss :: ContentType
typeJpeg :: ContentType
typePng :: ContentType
typeGif :: ContentType
typeSvg :: ContentType
typeJavascript :: ContentType
typeCss :: ContentType
typeFlv :: ContentType
typeOgv :: ContentType
typeOctet :: ContentType
simpleContentType :: ContentType -> ContentType
contentTypeTypes :: ContentType -> (ByteString, ByteString)
class MonadHandler m => MonadWidget (m :: Type -> Type) where
- liftWidget :: WidgetFor (HandlerSite m) a -> m a
class (MonadResource m, MonadLogger m) => MonadHandler (m :: Type -> Type) where
- type HandlerSite (m :: Type -> Type)
- type SubHandlerSite (m :: Type -> Type)
- liftHandler :: HandlerFor (HandlerSite m) a -> m a
- liftSubHandler :: SubHandlerFor (SubHandlerSite m) (HandlerSite m) a -> m a
type family HandlerSite (m :: Type -> Type)
type family SubHandlerSite (m :: Type -> Type)
data ProvidedRep (m :: Type -> Type)
data Fragment a b = a :#: b
class RedirectUrl master a where
- toTextUrl :: (MonadHandler m, HandlerSite m ~ master) => a -> m Text
type HandlerT site (m :: Type -> Type) = HandlerFor site
getRequest :: MonadHandler m => m YesodRequest
runRequestBody :: MonadHandler m => m RequestBodyContents
getYesod :: MonadHandler m => m (HandlerSite m)
getsYesod :: MonadHandler m => (HandlerSite m -> a) -> m a
getUrlRender :: MonadHandler m => m (Route (HandlerSite m) -> Text)
getUrlRenderParams :: MonadHandler m => m (Route (HandlerSite m) -> [(Text, Text)] -> Text)
getPostParams :: MonadHandler m => m [(Text, Text)]
getCurrentRoute :: MonadHandler m => m (Maybe (Route (HandlerSite m)))
handlerToIO :: MonadIO m => HandlerFor site (HandlerFor site a -> m a)
forkHandler :: (SomeException -> HandlerFor site ()) -> HandlerFor site () -> HandlerFor site ()
redirect :: (MonadHandler m, RedirectUrl (HandlerSite m) url) => url -> m a
redirectWith :: (MonadHandler m, RedirectUrl (HandlerSite m) url) => Status -> url -> m a
setUltDest :: (MonadHandler m, RedirectUrl (HandlerSite m) url) => url -> m ()
setUltDestCurrent :: MonadHandler m => m ()
setUltDestReferer :: MonadHandler m => m ()
redirectUltDest :: (RedirectUrl (HandlerSite m) url, MonadHandler m) => url -> m a
clearUltDest :: MonadHandler m => m ()
addMessage :: MonadHandler m => Text -> Html -> m ()
addMessageI :: (MonadHandler m, RenderMessage (HandlerSite m) msg) => Text -> msg -> m ()
getMessages :: MonadHandler m => m [(Text, Html)]
setMessage :: MonadHandler m => Html -> m ()
setMessageI :: (MonadHandler m, RenderMessage (HandlerSite m) msg) => msg -> m ()
getMessage :: MonadHandler m => m (Maybe Html)
sendFile :: MonadHandler m => ContentType -> FilePath -> m a
sendFilePart :: MonadHandler m => ContentType -> FilePath -> Integer -> Integer -> m a
sendResponse :: (MonadHandler m, ToTypedContent c) => c -> m a
sendResponseStatus :: (MonadHandler m, ToTypedContent c) => Status -> c -> m a
sendStatusJSON :: (MonadHandler m, ToJSON c) => Status -> c -> m a
sendResponseCreated :: MonadHandler m => Route (HandlerSite m) -> m a
sendResponseNoContent :: MonadHandler m => m a
sendWaiResponse :: MonadHandler m => Response -> m b
sendWaiApplication :: MonadHandler m => Application -> m b
sendRawResponseNoConduit :: (MonadHandler m, MonadUnliftIO m) => (IO ByteString -> (ByteString -> IO ()) -> m ()) -> m a
sendRawResponse :: (MonadHandler m, MonadUnliftIO m) => (ConduitT () ByteString IO () -> ConduitT ByteString Void IO () -> m ()) -> m a
notModified :: MonadHandler m => m a
notFound :: MonadHandler m => m a
badMethod :: MonadHandler m => m a
notAuthenticated :: MonadHandler m => m a
permissionDenied :: MonadHandler m => Text -> m a
permissionDeniedI :: (RenderMessage (HandlerSite m) msg, MonadHandler m) => msg -> m a
invalidArgs :: MonadHandler m => [Text] -> m a
invalidArgsI :: (MonadHandler m, RenderMessage (HandlerSite m) msg) => [msg] -> m a
setCookie :: MonadHandler m => SetCookie -> m ()
getExpires :: MonadIO m => Int -> m UTCTime
deleteCookie :: MonadHandler m => Text -> Text -> m ()
setLanguage :: MonadHandler m => Text -> m ()
addContentDispositionFileName :: MonadHandler m => Text -> m ()
addHeader :: MonadHandler m => Text -> Text -> m ()
setHeader :: MonadHandler m => Text -> Text -> m ()
replaceOrAddHeader :: MonadHandler m => Text -> Text -> m ()
cacheSeconds :: MonadHandler m => Int -> m ()
neverExpires :: MonadHandler m => m ()
alreadyExpired :: MonadHandler m => m ()
expiresAt :: MonadHandler m => UTCTime -> m ()
setEtag :: MonadHandler m => Text -> m ()
setWeakEtag :: MonadHandler m => Text -> m ()
setSession :: MonadHandler m => Text -> Text -> m ()
setSessionBS :: MonadHandler m => Text -> ByteString -> m ()
deleteSession :: MonadHandler m => Text -> m ()
clearSession :: MonadHandler m => m ()
lookupSession :: MonadHandler m => Text -> m (Maybe Text)
lookupSessionBS :: MonadHandler m => Text -> m (Maybe ByteString)
getSession :: MonadHandler m => m SessionMap
newIdent :: MonadHandler m => m Text
redirectToPost :: (MonadHandler m, RedirectUrl (HandlerSite m) url) => url -> m a
hamletToRepHtml :: MonadHandler m => HtmlUrl (Route (HandlerSite m)) -> m Html
giveUrlRenderer :: MonadHandler m => ((Route (HandlerSite m) -> [(Text, Text)] -> Text) -> output) -> m output
withUrlRenderer :: MonadHandler m => ((Route (HandlerSite m) -> [(Text, Text)] -> Text) -> output) -> m output
waiRequest :: MonadHandler m => m Request
getMessageRender :: (MonadHandler m, RenderMessage (HandlerSite m) message) => m (message -> Text)
cached :: (MonadHandler m, Typeable a) => m a -> m a
cacheGet :: (MonadHandler m, Typeable a) => m (Maybe a)
cacheSet :: (MonadHandler m, Typeable a) => a -> m ()
cachedBy :: (MonadHandler m, Typeable a) => ByteString -> m a -> m a
cacheByGet :: (MonadHandler m, Typeable a) => ByteString -> m (Maybe a)
cacheBySet :: (MonadHandler m, Typeable a) => ByteString -> a -> m ()
languages :: MonadHandler m => m [Text]
lookupHeader :: MonadHandler m => CI ByteString -> m (Maybe ByteString)
lookupHeaders :: MonadHandler m => CI ByteString -> m [ByteString]
lookupBasicAuth :: MonadHandler m => m (Maybe (Text, Text))
lookupBearerAuth :: MonadHandler m => m (Maybe Text)
lookupGetParams :: MonadHandler m => Text -> m [Text]
lookupGetParam :: MonadHandler m => Text -> m (Maybe Text)
lookupPostParams :: (MonadResource m, MonadHandler m) => Text -> m [Text]
lookupPostParam :: (MonadResource m, MonadHandler m) => Text -> m (Maybe Text)
lookupFile :: MonadHandler m => Text -> m (Maybe FileInfo)
lookupFiles :: MonadHandler m => Text -> m [FileInfo]
lookupCookie :: MonadHandler m => Text -> m (Maybe Text)
lookupCookies :: MonadHandler m => Text -> m [Text]
selectRep :: MonadHandler m => Writer (Endo [ProvidedRep m]) () -> m TypedContent
provideRep :: (Monad m, HasContentType a) => m a -> Writer (Endo [ProvidedRep m]) ()
provideRepType :: (Monad m, ToContent a) => ContentType -> m a -> Writer (Endo [ProvidedRep m]) ()
rawRequestBody :: forall (m :: Type -> Type) i. MonadHandler m => ConduitT i ByteString m ()
fileSource :: forall (m :: Type -> Type). MonadResource m => FileInfo -> ConduitT () ByteString m ()
fileSourceByteString :: MonadResource m => FileInfo -> m ByteString
respond :: (Monad m, ToContent a) => ContentType -> a -> m TypedContent
respondSource :: ContentType -> ConduitT () (Flush Builder) (HandlerFor site) () -> HandlerFor site TypedContent
sendChunk :: forall (m :: Type -> Type) a i. (Monad m, ToFlushBuilder a) => a -> ConduitT i (Flush Builder) m ()
sendFlush :: forall (m :: Type -> Type) i. Monad m => ConduitT i (Flush Builder) m ()
sendChunkBS :: forall (m :: Type -> Type) i. Monad m => ByteString -> ConduitT i (Flush Builder) m ()
sendChunkLBS :: forall (m :: Type -> Type) i. Monad m => ByteString -> ConduitT i (Flush Builder) m ()
sendChunkText :: forall (m :: Type -> Type) i. Monad m => Text -> ConduitT i (Flush Builder) m ()
sendChunkLazyText :: forall (m :: Type -> Type) i. Monad m => Text -> ConduitT i (Flush Builder) m ()
sendChunkHtml :: forall (m :: Type -> Type) i. Monad m => Html -> ConduitT i (Flush Builder) m ()
defaultCsrfCookieName :: ByteString
setCsrfCookie :: MonadHandler m => m ()
setCsrfCookieWithCookie :: MonadHandler m => SetCookie -> m ()
defaultCsrfHeaderName :: CI ByteString
checkCsrfHeaderNamed :: MonadHandler m => CI ByteString -> m ()
hasValidCsrfHeaderNamed :: MonadHandler m => CI ByteString -> m Bool
defaultCsrfParamName :: Text
checkCsrfParamNamed :: MonadHandler m => Text -> m ()
hasValidCsrfParamNamed :: MonadHandler m => Text -> m Bool
checkCsrfHeaderOrParam :: (MonadHandler m, MonadLogger m) => CI ByteString -> Text -> m ()
getSubYesod :: MonadHandler m => m (SubHandlerSite m)
getRouteToParent :: MonadHandler m => m (Route (SubHandlerSite m) -> Route (HandlerSite m))
getSubCurrentRoute :: MonadHandler m => m (Maybe (Route (SubHandlerSite m)))
class ToWidgetHead site a where
- toWidgetHead :: (MonadWidget m, HandlerSite m ~ site) => a -> m ()
class ToWidgetBody site a where
- toWidgetBody :: (MonadWidget m, HandlerSite m ~ site) => a -> m ()
class ToWidgetMedia site a where
- toWidgetMedia :: (MonadWidget m, HandlerSite m ~ site) => Text -> a -> m ()
class ToWidget site a where
- toWidget :: (MonadWidget m, HandlerSite m ~ site) => a -> m ()
type WidgetT site (m :: Type -> Type) = WidgetFor site
setTitle :: MonadWidget m => Html -> m ()
setTitleI :: (MonadWidget m, RenderMessage (HandlerSite m) msg) => msg -> m ()
setDescription :: MonadWidget m => Text -> m ()
setDescriptionI :: (MonadWidget m, RenderMessage (HandlerSite m) msg) => msg -> m ()
setOGType :: MonadWidget m => Text -> m ()
setOGImage :: MonadWidget m => Text -> m ()
addStylesheet :: MonadWidget m => Route (HandlerSite m) -> m ()
addStylesheetAttrs :: MonadWidget m => Route (HandlerSite m) -> [(Text, Text)] -> m ()
addStylesheetRemote :: MonadWidget m => Text -> m ()
addStylesheetRemoteAttrs :: MonadWidget m => Text -> [(Text, Text)] -> m ()
addStylesheetEither :: MonadWidget m => Either (Route (HandlerSite m)) Text -> m ()
addScriptEither :: MonadWidget m => Either (Route (HandlerSite m)) Text -> m ()
addScript :: MonadWidget m => Route (HandlerSite m) -> m ()
addScriptAttrs :: MonadWidget m => Route (HandlerSite m) -> [(Text, Text)] -> m ()
addScriptRemote :: MonadWidget m => Text -> m ()
addScriptRemoteAttrs :: MonadWidget m => Text -> [(Text, Text)] -> m ()
whamlet :: QuasiQuoter
whamletFile :: FilePath -> Q Exp
whamletFileWithSettings :: HamletSettings -> FilePath -> Q Exp
asWidgetT :: forall site (m :: Type -> Type). WidgetT site m () -> WidgetT site m ()
ihamletToRepHtml :: (MonadHandler m, RenderMessage (HandlerSite m) message) => HtmlUrlI18n message (Route (HandlerSite m)) -> m Html
ihamletToHtml :: (MonadHandler m, RenderMessage (HandlerSite m) message) => HtmlUrlI18n message (Route (HandlerSite m)) -> m Html
handlerToWidget :: HandlerFor site a -> WidgetFor site a
class RenderRoute site => Yesod site where
- approot :: Approot site
- errorHandler :: ErrorResponse -> HandlerFor site TypedContent
- defaultLayout :: WidgetFor site () -> HandlerFor site Html
- urlParamRenderOverride :: site -> Route site -> [(Text, Text)] -> Maybe Builder
- isAuthorized :: Route site -> Bool -> HandlerFor site AuthResult
- isWriteRequest :: Route site -> HandlerFor site Bool
- authRoute :: site -> Maybe (Route site)
- cleanPath :: site -> [Text] -> Either [Text] [Text]
- joinPath :: site -> Text -> [Text] -> [(Text, Text)] -> Builder
- addStaticContent :: Text -> Text -> ByteString -> HandlerFor site (Maybe (Either Text (Route site, [(Text, Text)])))
- maximumContentLength :: site -> Maybe (Route site) -> Maybe Word64
- maximumContentLengthIO :: site -> Maybe (Route site) -> IO (Maybe Word64)
- makeLogger :: site -> IO Logger
- messageLoggerSource :: site -> Logger -> Loc -> LogSource -> LogLevel -> LogStr -> IO ()
- jsLoader :: site -> ScriptLoadPosition site
- jsAttributes :: site -> [(Text, Text)]
- jsAttributesHandler :: HandlerFor site [(Text, Text)]
- makeSessionBackend :: site -> IO (Maybe SessionBackend)
- fileUpload :: site -> RequestBodyLength -> FileUpload
- shouldLogIO :: site -> LogSource -> LogLevel -> IO Bool
- yesodMiddleware :: ToTypedContent res => HandlerFor site res -> HandlerFor site res
- yesodWithInternalState :: site -> Maybe (Route site) -> (InternalState -> IO a) -> IO a
- defaultMessageWidget :: Html -> HtmlUrl (Route site) -> WidgetFor site ()
defaultMakeLogger :: IO Logger
defaultMessageLoggerSource :: (LogSource -> LogLevel -> IO Bool) -> Logger -> Loc -> LogSource -> LogLevel -> LogStr -> IO ()
defaultShouldLogIO :: LogSource -> LogLevel -> IO Bool
defaultYesodMiddleware :: Yesod site => HandlerFor site res -> HandlerFor site res
sslOnlySessions :: IO (Maybe SessionBackend) -> IO (Maybe SessionBackend)
laxSameSiteSessions :: IO (Maybe SessionBackend) -> IO (Maybe SessionBackend)
strictSameSiteSessions :: IO (Maybe SessionBackend) -> IO (Maybe SessionBackend)
sslOnlyMiddleware :: Int -> HandlerFor site res -> HandlerFor site res
authorizationCheck :: Yesod site => HandlerFor site ()
defaultCsrfCheckMiddleware :: Yesod site => HandlerFor site res -> HandlerFor site res
csrfCheckMiddleware :: HandlerFor site res -> HandlerFor site Bool -> CI ByteString -> Text -> HandlerFor site res
defaultCsrfSetCookieMiddleware :: HandlerFor site res -> HandlerFor site res
csrfSetCookieMiddleware :: HandlerFor site res -> SetCookie -> HandlerFor site res
defaultCsrfMiddleware :: Yesod site => HandlerFor site res -> HandlerFor site res
widgetToPageContent :: Yesod site => WidgetFor site () -> HandlerFor site (PageContent (Route site))
defaultErrorHandler :: Yesod site => ErrorResponse -> HandlerFor site TypedContent
formatLogMessage :: IO ZonedDate -> Loc -> LogSource -> LogLevel -> LogStr -> IO LogStr
customizeSessionCookies :: (SetCookie -> SetCookie) -> SessionBackend -> SessionBackend
defaultClientSessionBackend :: Int -> FilePath -> IO SessionBackend
envClientSessionBackend :: Int -> String -> IO SessionBackend
clientSessionBackend :: Key -> IO ClientSessionDateCache -> SessionBackend
loadClientSession :: Key -> IO ClientSessionDateCache -> ByteString -> Request -> IO (SessionMap, SaveSession)
guessApproot :: Approot site
guessApprootOr :: Approot site -> Approot site
getApprootText :: Approot site -> site -> Request -> Text
defaultLayoutJson :: (Yesod site, ToJSON a) => WidgetFor site () -> HandlerFor site a -> HandlerFor site TypedContent
jsonToRepJson :: (Monad m, ToJSON a) => a -> m Value
returnJson :: (Monad m, ToJSON a) => a -> m Value
returnJsonEncoding :: (Monad m, ToJSON a) => a -> m Encoding
provideJson :: forall (m :: Type -> Type) a. (Monad m, ToJSON a) => a -> Writer (Endo [ProvidedRep m]) ()
parseJsonBody :: (MonadHandler m, FromJSON a) => m (Result a)
parseInsecureJsonBody :: (MonadHandler m, FromJSON a) => m (Result a)
parseCheckJsonBody :: (MonadHandler m, FromJSON a) => m (Result a)
parseJsonBody_ :: (MonadHandler m, FromJSON a) => m a
requireJsonBody :: (MonadHandler m, FromJSON a) => m a
requireInsecureJsonBody :: (MonadHandler m, FromJSON a) => m a
requireCheckJsonBody :: (MonadHandler m, FromJSON a) => m a
array :: ToJSON a => [a] -> Value
jsonOrRedirect :: (MonadHandler m, ToJSON a) => Route (HandlerSite m) -> a -> m Value
jsonEncodingOrRedirect :: (MonadHandler m, ToJSON a) => Route (HandlerSite m) -> a -> m Encoding
acceptsJson :: MonadHandler m => m Bool
contentTypeHeaderIsJson :: ByteString -> Bool
yesodRunner :: (ToTypedContent res, Yesod site) => HandlerFor site res -> YesodRunnerEnv site -> Maybe (Route site) -> Application
yesodRender :: Yesod y => y -> ResolvedApproot -> Route y -> [(Text, Text)] -> Text
class YesodSubDispatch sub master where
- yesodSubDispatch :: YesodSubRunnerEnv sub master -> Application
class Yesod site => YesodDispatch site where
- yesodDispatch :: YesodRunnerEnv site -> Application
type LiteWidget = WidgetFor LiteApp
type LiteHandler = HandlerFor LiteApp
newtype LiteApp = LiteApp {
- unLiteApp :: Method -> [Text] -> Maybe (LiteHandler TypedContent)
}
liteApp :: Writer LiteApp () -> LiteApp
dispatchTo :: ToTypedContent a => LiteHandler a -> Writer LiteApp ()
onMethod :: Method -> Writer LiteApp () -> Writer LiteApp ()
onStatic :: Text -> Writer LiteApp () -> Writer LiteApp ()
withDynamic :: PathPiece p => (p -> Writer LiteApp ()) -> Writer LiteApp ()
withDynamicMulti :: PathMultiPiece ps => (ps -> Writer LiteApp ()) -> Writer LiteApp ()
class YesodBreadcrumbs site where
- breadcrumb :: Route site -> HandlerFor site (Text, Maybe (Route site))
breadcrumbs :: (YesodBreadcrumbs site, Show (Route site), Eq (Route site)) => HandlerFor site (Text, [(Route site, Text)])
parseRoutes :: QuasiQuoter
parseRoutesFile :: FilePath -> Q Exp
parseRoutesFileNoCheck :: FilePath -> Q Exp
parseRoutesNoCheck :: QuasiQuoter
mkYesod :: String -> [ResourceTree String] -> Q [Dec]
mkYesodWith :: [[String]] -> String -> [String] -> [ResourceTree String] -> Q [Dec]
mkYesodData :: String -> [ResourceTree String] -> Q [Dec]
mkYesodSubData :: String -> [ResourceTree String] -> Q [Dec]
mkYesodDispatch :: String -> [ResourceTree String] -> Q [Dec]
mkYesodSubDispatch :: [ResourceTree a] -> Q Exp
toWaiAppPlain :: YesodDispatch site => site -> IO Application
defaultGen :: IO Int
toWaiAppYre :: YesodDispatch site => YesodRunnerEnv site -> Application
toWaiApp :: YesodDispatch site => site -> IO Application
warp :: YesodDispatch site => Int -> site -> IO ()
mkDefaultMiddlewares :: Logger -> IO Middleware
defaultMiddlewaresNoLogging :: Middleware
warpDebug :: YesodDispatch site => Int -> site -> IO ()
warpEnv :: YesodDispatch site => site -> IO ()
getGetMaxExpires :: IO (IO Text)
runFakeHandler :: (Yesod site, MonadIO m) => SessionMap -> (site -> Logger) -> site -> HandlerT site IO a -> m (Either ErrorResponse a)
unauthorizedI :: (MonadHandler m, RenderMessage (HandlerSite m) msg) => msg -> m AuthResult
yesodVersion :: String
maybeAuthorized :: Yesod site => Route site -> Bool -> HandlerT site IO (Maybe (Route site))
showIntegral :: Integral a => a -> String
readIntegral :: Num a => String -> Maybe a
data Extra = Extra {
- extraCopyright :: Text
- extraAnalytics :: Maybe Text
- extraStaticRoot :: Maybe Text
}
development :: Bool
production :: Bool
hledgerorgurl :: Text
manualurl :: Text
defhost :: String
defport :: Int
defbaseurl :: String -> Int -> String
staticDir :: FilePath
staticRoot :: AppConfig DefaultEnv Extra -> Text
widgetFileSettings :: WidgetFileSettings
widgetFile :: String -> Q Exp
parseExtra :: DefaultEnv -> Object -> Parser Extra
staticSite :: IO Static
hledger_css :: StaticRoute
hledger_js :: StaticRoute
css_bootstrap_datepicker_standalone_min_css :: StaticRoute
css_bootstrap_theme_css :: StaticRoute
css_bootstrap_theme_css_map :: StaticRoute
css_bootstrap_theme_min_css :: StaticRoute
css_bootstrap_css :: StaticRoute
css_bootstrap_css_map :: StaticRoute
css_bootstrap_min_css :: StaticRoute
fonts_glyphicons_halflings_regular_eot :: StaticRoute
fonts_glyphicons_halflings_regular_svg :: StaticRoute
fonts_glyphicons_halflings_regular_ttf :: StaticRoute
fonts_glyphicons_halflings_regular_woff :: StaticRoute
js_bootstrap_datepicker_min_js :: StaticRoute
js_bootstrap_js :: StaticRoute
js_bootstrap_min_js :: StaticRoute
js_excanvas_js :: StaticRoute
js_excanvas_min_js :: StaticRoute
js_jquery_cookie_js :: StaticRoute
js_jquery_flot_canvas_js :: StaticRoute
js_jquery_flot_canvas_min_js :: StaticRoute
js_jquery_flot_categories_js :: StaticRoute
js_jquery_flot_categories_min_js :: StaticRoute
js_jquery_flot_crosshair_js :: StaticRoute
js_jquery_flot_crosshair_min_js :: StaticRoute
js_jquery_flot_errorbars_js :: StaticRoute
js_jquery_flot_errorbars_min_js :: StaticRoute
js_jquery_flot_fillbetween_js :: StaticRoute
js_jquery_flot_fillbetween_min_js :: StaticRoute
js_jquery_flot_image_js :: StaticRoute
js_jquery_flot_image_min_js :: StaticRoute
js_jquery_flot_js :: StaticRoute
js_jquery_flot_min_js :: StaticRoute
js_jquery_flot_navigate_js :: StaticRoute
js_jquery_flot_navigate_min_js :: StaticRoute
js_jquery_flot_pie_js :: StaticRoute
js_jquery_flot_pie_min_js :: StaticRoute
js_jquery_flot_resize_js :: StaticRoute
js_jquery_flot_resize_min_js :: StaticRoute
js_jquery_flot_selection_js :: StaticRoute
js_jquery_flot_selection_min_js :: StaticRoute
js_jquery_flot_stack_js :: StaticRoute
js_jquery_flot_stack_min_js :: StaticRoute
js_jquery_flot_symbol_js :: StaticRoute
js_jquery_flot_symbol_min_js :: StaticRoute
js_jquery_flot_threshold_js :: StaticRoute
js_jquery_flot_threshold_min_js :: StaticRoute
js_jquery_flot_time_js :: StaticRoute
js_jquery_flot_time_min_js :: StaticRoute
js_jquery_flot_tooltip_js :: StaticRoute
js_jquery_flot_tooltip_min_js :: StaticRoute
js_jquery_hotkeys_js :: StaticRoute
js_jquery_js :: StaticRoute
js_jquery_min_js :: StaticRoute
js_jquery_url_js :: StaticRoute
js_typeahead_bundle_js :: StaticRoute
js_typeahead_bundle_min_js :: StaticRoute
data Capability
- = CapView
- | CapAdd
- | CapManage
data App = App {
- settings :: AppConfig DefaultEnv Extra
- getStatic :: Static
- httpManager :: Manager
- appOpts :: WebOpts
- appJournal :: IORef Journal
}
data ViewData = VD {
- opts :: WebOpts
- today :: Day
- j :: Journal
- q :: Text
- m :: Query
- qopts :: [QueryOpt]
- caps :: [Capability]
}
type Form x = Html -> MForm (HandlerFor App) (FormResult x, Widget)
type AppRoute = Route App
type Widget = WidgetFor App ()
type Handler = HandlerFor App
resourcesApp :: [ResourceTree String]
getViewData :: Handler ViewData
checkServerSideUiEnabled :: Handler ()
shouldShowSidebar :: Handler Bool
getCurrentJournal :: IORef Journal -> CliOpts -> Day -> Handler (Journal, Maybe String)

Documentation

(++) :: [a] -> [a] -> [a] infixr 5 #

Append two lists, i.e.,

[x1, ..., xm] ++ [y1, ..., yn] == [x1, ..., xm, y1, ..., yn]
[x1, ..., xm] ++ [y1, ...] == [x1, ..., xm, y1, ...]

If the first list is not finite, the result is the first list.

seq :: forall (r :: RuntimeRep) a (b :: TYPE r). a -> b -> b infixr 0 #

The value of seq a b is bottom if a is bottom, and otherwise equal to b. In other words, it evaluates the first argument a to weak head normal form (WHNF). seq is usually introduced to improve performance by avoiding unneeded laziness.

A note on evaluation order: the expression seq a b does not guarantee that a will be evaluated before b. The only guarantee given by seq is that the both a and b will be evaluated before seq returns a value. In particular, this means that b may be evaluated before a. If you need to guarantee a specific order of evaluation, you must use the function pseq from the "parallel" package.

filter :: (a -> Bool) -> [a] -> [a] #

$\mathcal{O}(n)$. filter, applied to a predicate and a list, returns the list of those elements that satisfy the predicate; i.e.,

filter p xs = [ x | x <- xs, p x]

>>> filter odd [1, 2, 3]
[1,3]

zip :: [a] -> [b] -> [(a, b)] #

$\mathcal{O}(\min(m,n))$. zip takes two lists and returns a list of corresponding pairs.

zip [1, 2] ['a', 'b'] = [(1, 'a'), (2, 'b')]

If one input list is short, excess elements of the longer list are discarded:

zip [1] ['a', 'b'] = [(1, 'a')]
zip [1, 2] ['a'] = [(1, 'a')]

zip is right-lazy:

zip [] _|_ = []
zip _|_ [] = _|_

zip is capable of list fusion, but it is restricted to its first list argument and its resulting list.

print :: Show a => a -> IO () #

The print function outputs a value of any printable type to the standard output device. Printable types are those that are instances of class Show; print converts values to strings for output using the show operation and adds a newline.

For example, a program to print the first 20 integers and their powers of 2 could be written as:

main = print ([(n, 2^n) | n <- [0..19]])

fst :: (a, b) -> a #

Extract the first component of a pair.

snd :: (a, b) -> b #

Extract the second component of a pair.

otherwise :: Bool #

otherwise is defined as the value True. It helps to make guards more readable. eg.

 f x | x < 0     = ...
     | otherwise = ...

map :: (a -> b) -> [a] -> [b] #

$\mathcal{O}(n)$. map f xs is the list obtained by applying f to each element of xs, i.e.,

map f [x1, x2, ..., xn] == [f x1, f x2, ..., f xn]
map f [x1, x2, ...] == [f x1, f x2, ...]

>>> map (+1) [1, 2, 3]

($) :: forall (r :: RuntimeRep) a (b :: TYPE r). (a -> b) -> a -> b infixr 0 #

Application operator. This operator is redundant, since ordinary application (f x) means the same as (f $ x). However, $ has low, right-associative binding precedence, so it sometimes allows parentheses to be omitted; for example:

f $ g $ h x  =  f (g (h x))

It is also useful in higher-order situations, such as map ($ 0) xs, or zipWith ($) fs xs.

Note that ($) is levity-polymorphic in its result type, so that foo $ True where foo :: Bool -> Int# is well-typed.

fromIntegral :: (Integral a, Num b) => a -> b #

general coercion from integral types

realToFrac :: (Real a, Fractional b) => a -> b #

general coercion to fractional types

guard :: Alternative f => Bool -> f () #

Conditional failure of Alternative computations. Defined by

guard True  = pure ()
guard False = empty

Examples

Expand

Common uses of guard include conditionally signaling an error in an error monad and conditionally rejecting the current choice in an Alternative-based parser.

As an example of signaling an error in the error monad Maybe, consider a safe division function safeDiv x y that returns Nothing when the denominator y is zero and Just (x `div` y) otherwise. For example:

>>> safeDiv 4 0
Nothing
>>> safeDiv 4 2
Just 2

A definition of safeDiv using guards, but not guard:

safeDiv :: Int -> Int -> Maybe Int
safeDiv x y | y /= 0    = Just (x `div` y)
            | otherwise = Nothing

A definition of safeDiv using guard and Monad do-notation:

safeDiv :: Int -> Int -> Maybe Int
safeDiv x y = do
  guard (y /= 0)
  return (x `div` y)

join :: Monad m => m (m a) -> m a #

The join function is the conventional monad join operator. It is used to remove one level of monadic structure, projecting its bound argument into the outer level.

'join bss' can be understood as the do expression

do bs <- bss
   bs

Examples

Expand

A common use of join is to run an IO computation returned from an STM transaction, since STM transactions can't perform IO directly. Recall that

atomically :: STM a -> IO a

is used to run STM transactions atomically. So, by specializing the types of atomically and join to

atomically :: STM (IO b) -> IO (IO b)
join       :: IO (IO b)  -> IO b

we can compose them as

join . atomically :: STM (IO b) -> IO b

to run an STM transaction and the IO action it returns.

class Bounded a where #

The Bounded class is used to name the upper and lower limits of a type. Ord is not a superclass of Bounded since types that are not totally ordered may also have upper and lower bounds.

The Bounded class may be derived for any enumeration type; minBound is the first constructor listed in the data declaration and maxBound is the last. Bounded may also be derived for single-constructor datatypes whose constituent types are in Bounded.

Methods

minBound :: a #

maxBound :: a #

Instances

Instances details

Bounded Bool	Since: base-2.1
Instance details Defined in GHC.Enum Methods minBound :: Bool # maxBound :: Bool #
Bounded Char	Since: base-2.1
Instance details Defined in GHC.Enum Methods minBound :: Char # maxBound :: Char #
Bounded Int	Since: base-2.1
Instance details Defined in GHC.Enum Methods minBound :: Int # maxBound :: Int #
Bounded Int8	Since: base-2.1
Instance details Defined in GHC.Int Methods minBound :: Int8 # maxBound :: Int8 #
Bounded Int16	Since: base-2.1
Instance details Defined in GHC.Int Methods minBound :: Int16 # maxBound :: Int16 #
Bounded Int32	Since: base-2.1
Instance details Defined in GHC.Int Methods minBound :: Int32 # maxBound :: Int32 #
Bounded Int64	Since: base-2.1
Instance details Defined in GHC.Int Methods minBound :: Int64 # maxBound :: Int64 #
Bounded Ordering	Since: base-2.1
Instance details Defined in GHC.Enum Methods minBound :: Ordering # maxBound :: Ordering #
Bounded Word	Since: base-2.1
Instance details Defined in GHC.Enum Methods minBound :: Word # maxBound :: Word #
Bounded Word8	Since: base-2.1
Instance details Defined in GHC.Word Methods minBound :: Word8 # maxBound :: Word8 #
Bounded Word16	Since: base-2.1
Instance details Defined in GHC.Word Methods minBound :: Word16 # maxBound :: Word16 #
Bounded Word32	Since: base-2.1
Instance details Defined in GHC.Word Methods minBound :: Word32 # maxBound :: Word32 #
Bounded Word64	Since: base-2.1
Instance details Defined in GHC.Word Methods minBound :: Word64 # maxBound :: Word64 #
Bounded VecCount	Since: base-4.10.0.0
Instance details Defined in GHC.Enum Methods minBound :: VecCount # maxBound :: VecCount #
Bounded VecElem	Since: base-4.10.0.0
Instance details Defined in GHC.Enum Methods minBound :: VecElem # maxBound :: VecElem #
Bounded ()	Since: base-2.1
Instance details Defined in GHC.Enum Methods minBound :: () # maxBound :: () #
Bounded All	Since: base-2.1
Instance details Defined in Data.Semigroup.Internal Methods minBound :: All # maxBound :: All #
Bounded Any	Since: base-2.1
Instance details Defined in Data.Semigroup.Internal Methods minBound :: Any # maxBound :: Any #
Bounded Associativity	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Methods minBound :: Associativity # maxBound :: Associativity #
Bounded SourceUnpackedness	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Methods minBound :: SourceUnpackedness # maxBound :: SourceUnpackedness #
Bounded SourceStrictness	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Methods minBound :: SourceStrictness # maxBound :: SourceStrictness #
Bounded DecidedStrictness	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Methods minBound :: DecidedStrictness # maxBound :: DecidedStrictness #
Bounded CChar
Instance details Defined in Foreign.C.Types Methods minBound :: CChar # maxBound :: CChar #
Bounded CSChar
Instance details Defined in Foreign.C.Types Methods minBound :: CSChar # maxBound :: CSChar #
Bounded CUChar
Instance details Defined in Foreign.C.Types Methods minBound :: CUChar # maxBound :: CUChar #
Bounded CShort
Instance details Defined in Foreign.C.Types Methods minBound :: CShort # maxBound :: CShort #
Bounded CUShort
Instance details Defined in Foreign.C.Types Methods minBound :: CUShort # maxBound :: CUShort #
Bounded CInt
Instance details Defined in Foreign.C.Types Methods minBound :: CInt # maxBound :: CInt #
Bounded CUInt
Instance details Defined in Foreign.C.Types Methods minBound :: CUInt # maxBound :: CUInt #
Bounded CLong
Instance details Defined in Foreign.C.Types Methods minBound :: CLong # maxBound :: CLong #
Bounded CULong
Instance details Defined in Foreign.C.Types Methods minBound :: CULong # maxBound :: CULong #
Bounded CLLong
Instance details Defined in Foreign.C.Types Methods minBound :: CLLong # maxBound :: CLLong #
Bounded CULLong
Instance details Defined in Foreign.C.Types Methods minBound :: CULLong # maxBound :: CULLong #
Bounded CBool
Instance details Defined in Foreign.C.Types Methods minBound :: CBool # maxBound :: CBool #
Bounded CPtrdiff
Instance details Defined in Foreign.C.Types Methods minBound :: CPtrdiff # maxBound :: CPtrdiff #
Bounded CSize
Instance details Defined in Foreign.C.Types Methods minBound :: CSize # maxBound :: CSize #
Bounded CWchar
Instance details Defined in Foreign.C.Types Methods minBound :: CWchar # maxBound :: CWchar #
Bounded CSigAtomic
Instance details Defined in Foreign.C.Types Methods minBound :: CSigAtomic # maxBound :: CSigAtomic #
Bounded CIntPtr
Instance details Defined in Foreign.C.Types Methods minBound :: CIntPtr # maxBound :: CIntPtr #
Bounded CUIntPtr
Instance details Defined in Foreign.C.Types Methods minBound :: CUIntPtr # maxBound :: CUIntPtr #
Bounded CIntMax
Instance details Defined in Foreign.C.Types Methods minBound :: CIntMax # maxBound :: CIntMax #
Bounded CUIntMax
Instance details Defined in Foreign.C.Types Methods minBound :: CUIntMax # maxBound :: CUIntMax #
Bounded UTF32_Invalid
Instance details Defined in Basement.String.Encoding.UTF32 Methods minBound :: UTF32_Invalid # maxBound :: UTF32_Invalid #
Bounded Encoding
Instance details Defined in Basement.String Methods minBound :: Encoding # maxBound :: Encoding #
Bounded HelpFormat
Instance details Defined in System.Console.CmdArgs.Explicit.Help Methods minBound :: HelpFormat # maxBound :: HelpFormat #
Bounded FileType
Instance details Defined in System.Directory.Internal.Common Methods minBound :: FileType # maxBound :: FileType #
Bounded XdgDirectory
Instance details Defined in System.Directory.Internal.Common Methods minBound :: XdgDirectory # maxBound :: XdgDirectory #
Bounded XdgDirectoryList
Instance details Defined in System.Directory.Internal.Common Methods minBound :: XdgDirectoryList # maxBound :: XdgDirectoryList #
Bounded Extension
Instance details Defined in GHC.LanguageExtensions.Type Methods minBound :: Extension # maxBound :: Extension #
Bounded Status
Instance details Defined in Hledger.Data.Types Methods minBound :: Status # maxBound :: Status #
Bounded Status
Instance details Defined in Network.HTTP.Types.Status Methods minBound :: Status # maxBound :: Status #
Bounded StdMethod
Instance details Defined in Network.HTTP.Types.Method Methods minBound :: StdMethod # maxBound :: StdMethod #
Bounded IPv4
Instance details Defined in Data.IP.Addr Methods minBound :: IPv4 # maxBound :: IPv4 #
Bounded IPv6
Instance details Defined in Data.IP.Addr Methods minBound :: IPv6 # maxBound :: IPv6 #
Bounded Style
Instance details Defined in Text.Libyaml Methods minBound :: Style # maxBound :: Style #
Bounded SequenceStyle
Instance details Defined in Text.Libyaml Methods minBound :: SequenceStyle # maxBound :: SequenceStyle #
Bounded MappingStyle
Instance details Defined in Text.Libyaml Methods minBound :: MappingStyle # maxBound :: MappingStyle #
Bounded PortNumber
Instance details Defined in Network.Socket.Types Methods minBound :: PortNumber # maxBound :: PortNumber #
Bounded Checkmark
Instance details Defined in Database.Persist.Types.Base Methods minBound :: Checkmark # maxBound :: Checkmark #
Bounded VarType
Instance details Defined in Text.Shakespeare Methods minBound :: VarType # maxBound :: VarType #
Bounded Enctype
Instance details Defined in Yesod.Form.Types Methods minBound :: Enctype # maxBound :: Enctype #
Bounded DefaultEnv
Instance details Defined in Yesod.Default.Config Methods minBound :: DefaultEnv # maxBound :: DefaultEnv #
Bounded Format
Instance details Defined in Codec.Compression.Zlib.Stream Methods minBound :: Format # maxBound :: Format #
Bounded Method
Instance details Defined in Codec.Compression.Zlib.Stream Methods minBound :: Method # maxBound :: Method #
Bounded CompressionStrategy
Instance details Defined in Codec.Compression.Zlib.Stream Methods minBound :: CompressionStrategy # maxBound :: CompressionStrategy #
Bounded Capability Source #
Instance details Defined in Hledger.Web.WebOptions Methods minBound :: Capability # maxBound :: Capability #
Bounded a => Bounded (Min a)	Since: base-4.9.0.0
Instance details Defined in Data.Semigroup Methods minBound :: Min a # maxBound :: Min a #
Bounded a => Bounded (Max a)	Since: base-4.9.0.0
Instance details Defined in Data.Semigroup Methods minBound :: Max a # maxBound :: Max a #
Bounded a => Bounded (First a)	Since: base-4.9.0.0
Instance details Defined in Data.Semigroup Methods minBound :: First a # maxBound :: First a #
Bounded a => Bounded (Last a)	Since: base-4.9.0.0
Instance details Defined in Data.Semigroup Methods minBound :: Last a # maxBound :: Last a #
Bounded m => Bounded (WrappedMonoid m)	Since: base-4.9.0.0
Instance details Defined in Data.Semigroup Methods minBound :: WrappedMonoid m # maxBound :: WrappedMonoid m #
Bounded a => Bounded (Identity a)	Since: base-4.9.0.0
Instance details Defined in Data.Functor.Identity Methods minBound :: Identity a # maxBound :: Identity a #
Bounded a => Bounded (Dual a)	Since: base-2.1
Instance details Defined in Data.Semigroup.Internal Methods minBound :: Dual a # maxBound :: Dual a #
Bounded a => Bounded (Sum a)	Since: base-2.1
Instance details Defined in Data.Semigroup.Internal Methods minBound :: Sum a # maxBound :: Sum a #
Bounded a => Bounded (Product a)	Since: base-2.1
Instance details Defined in Data.Semigroup.Internal Methods minBound :: Product a # maxBound :: Product a #
Bounded a => Bounded (Down a)	Since: base-4.14.0.0
Instance details Defined in Data.Ord Methods minBound :: Down a # maxBound :: Down a #
(Bounded a, Bounded b) => Bounded (a, b)	Since: base-2.1
Instance details Defined in GHC.Enum Methods minBound :: (a, b) # maxBound :: (a, b) #
Bounded (Proxy t)	Since: base-4.7.0.0
Instance details Defined in Data.Proxy Methods minBound :: Proxy t # maxBound :: Proxy t #
(Bounded a, Bounded b) => Bounded (Pair a b)
Instance details Defined in Data.Strict.Tuple Methods minBound :: Pair a b # maxBound :: Pair a b #
(Bounded a, Bounded b, Bounded c) => Bounded (a, b, c)	Since: base-2.1
Instance details Defined in GHC.Enum Methods minBound :: (a, b, c) # maxBound :: (a, b, c) #
Bounded a => Bounded (Const a b)	Since: base-4.9.0.0
Instance details Defined in Data.Functor.Const Methods minBound :: Const a b # maxBound :: Const a b #
(Applicative f, Bounded a) => Bounded (Ap f a)	Since: base-4.12.0.0
Instance details Defined in Data.Monoid Methods minBound :: Ap f a # maxBound :: Ap f a #
Bounded b => Bounded (Tagged s b)
Instance details Defined in Data.Tagged Methods minBound :: Tagged s b # maxBound :: Tagged s b #
(Bounded a, Bounded b, Bounded c, Bounded d) => Bounded (a, b, c, d)	Since: base-2.1
Instance details Defined in GHC.Enum Methods minBound :: (a, b, c, d) # maxBound :: (a, b, c, d) #
(Bounded a, Bounded b, Bounded c, Bounded d, Bounded e) => Bounded (a, b, c, d, e)	Since: base-2.1
Instance details Defined in GHC.Enum Methods minBound :: (a, b, c, d, e) # maxBound :: (a, b, c, d, e) #
(Bounded a, Bounded b, Bounded c, Bounded d, Bounded e, Bounded f) => Bounded (a, b, c, d, e, f)	Since: base-2.1
Instance details Defined in GHC.Enum Methods minBound :: (a, b, c, d, e, f) # maxBound :: (a, b, c, d, e, f) #
(Bounded a, Bounded b, Bounded c, Bounded d, Bounded e, Bounded f, Bounded g) => Bounded (a, b, c, d, e, f, g)	Since: base-2.1
Instance details Defined in GHC.Enum Methods minBound :: (a, b, c, d, e, f, g) # maxBound :: (a, b, c, d, e, f, g) #
(Bounded a, Bounded b, Bounded c, Bounded d, Bounded e, Bounded f, Bounded g, Bounded h) => Bounded (a, b, c, d, e, f, g, h)	Since: base-2.1
Instance details Defined in GHC.Enum Methods minBound :: (a, b, c, d, e, f, g, h) # maxBound :: (a, b, c, d, e, f, g, h) #
(Bounded a, Bounded b, Bounded c, Bounded d, Bounded e, Bounded f, Bounded g, Bounded h, Bounded i) => Bounded (a, b, c, d, e, f, g, h, i)	Since: base-2.1
Instance details Defined in GHC.Enum Methods minBound :: (a, b, c, d, e, f, g, h, i) # maxBound :: (a, b, c, d, e, f, g, h, i) #
(Bounded a, Bounded b, Bounded c, Bounded d, Bounded e, Bounded f, Bounded g, Bounded h, Bounded i, Bounded j) => Bounded (a, b, c, d, e, f, g, h, i, j)	Since: base-2.1
Instance details Defined in GHC.Enum Methods minBound :: (a, b, c, d, e, f, g, h, i, j) # maxBound :: (a, b, c, d, e, f, g, h, i, j) #
(Bounded a, Bounded b, Bounded c, Bounded d, Bounded e, Bounded f, Bounded g, Bounded h, Bounded i, Bounded j, Bounded k) => Bounded (a, b, c, d, e, f, g, h, i, j, k)	Since: base-2.1
Instance details Defined in GHC.Enum Methods minBound :: (a, b, c, d, e, f, g, h, i, j, k) # maxBound :: (a, b, c, d, e, f, g, h, i, j, k) #
(Bounded a, Bounded b, Bounded c, Bounded d, Bounded e, Bounded f, Bounded g, Bounded h, Bounded i, Bounded j, Bounded k, Bounded l) => Bounded (a, b, c, d, e, f, g, h, i, j, k, l)	Since: base-2.1
Instance details Defined in GHC.Enum Methods minBound :: (a, b, c, d, e, f, g, h, i, j, k, l) # maxBound :: (a, b, c, d, e, f, g, h, i, j, k, l) #
(Bounded a, Bounded b, Bounded c, Bounded d, Bounded e, Bounded f, Bounded g, Bounded h, Bounded i, Bounded j, Bounded k, Bounded l, Bounded m) => Bounded (a, b, c, d, e, f, g, h, i, j, k, l, m)	Since: base-2.1
Instance details Defined in GHC.Enum Methods minBound :: (a, b, c, d, e, f, g, h, i, j, k, l, m) # maxBound :: (a, b, c, d, e, f, g, h, i, j, k, l, m) #
(Bounded a, Bounded b, Bounded c, Bounded d, Bounded e, Bounded f, Bounded g, Bounded h, Bounded i, Bounded j, Bounded k, Bounded l, Bounded m, Bounded n) => Bounded (a, b, c, d, e, f, g, h, i, j, k, l, m, n)	Since: base-2.1
Instance details Defined in GHC.Enum Methods minBound :: (a, b, c, d, e, f, g, h, i, j, k, l, m, n) # maxBound :: (a, b, c, d, e, f, g, h, i, j, k, l, m, n) #
(Bounded a, Bounded b, Bounded c, Bounded d, Bounded e, Bounded f, Bounded g, Bounded h, Bounded i, Bounded j, Bounded k, Bounded l, Bounded m, Bounded n, Bounded o) => Bounded (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o)	Since: base-2.1
Instance details Defined in GHC.Enum Methods minBound :: (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o) # maxBound :: (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o) #

class Enum a where #

Class Enum defines operations on sequentially ordered types.

The enumFrom... methods are used in Haskell's translation of arithmetic sequences.

Instances of Enum may be derived for any enumeration type (types whose constructors have no fields). The nullary constructors are assumed to be numbered left-to-right by fromEnum from 0 through n-1. See Chapter 10 of the Haskell Report for more details.

For any type that is an instance of class Bounded as well as Enum, the following should hold:

The calls succ maxBound and pred minBound should result in a runtime error.
fromEnum and toEnum should give a runtime error if the result value is not representable in the result type. For example, toEnum 7 :: Bool is an error.
enumFrom and enumFromThen should be defined with an implicit bound, thus:

   enumFrom     x   = enumFromTo     x maxBound
   enumFromThen x y = enumFromThenTo x y bound
     where
       bound | fromEnum y >= fromEnum x = maxBound
             | otherwise                = minBound

Minimal complete definition

toEnum, fromEnum

Methods

succ :: a -> a #

the successor of a value. For numeric types, succ adds 1.

pred :: a -> a #

the predecessor of a value. For numeric types, pred subtracts 1.

toEnum :: Int -> a #

Convert from an Int.

fromEnum :: a -> Int #

Convert to an Int. It is implementation-dependent what fromEnum returns when applied to a value that is too large to fit in an Int.

enumFrom :: a -> [a] #

Used in Haskell's translation of [n..] with [n..] = enumFrom n, a possible implementation being enumFrom n = n : enumFrom (succ n). For example:

```
enumFrom 4 :: [Integer] = [4,5,6,7,...]
```

enumFrom 6 :: [Int] = [6,7,8,9,...,maxBound :: Int]

enumFromThen :: a -> a -> [a] #

Used in Haskell's translation of [n,n'..] with [n,n'..] = enumFromThen n n', a possible implementation being enumFromThen n n' = n : n' : worker (f x) (f x n'), worker s v = v : worker s (s v), x = fromEnum n' - fromEnum n and f n y | n > 0 = f (n - 1) (succ y) | n < 0 = f (n + 1) (pred y) | otherwise = y For example:

enumFromThen 4 6 :: [Integer] = [4,6,8,10...]

enumFromThen 6 2 :: [Int] = [6,2,-2,-6,...,minBound :: Int]

enumFromTo :: a -> a -> [a] #

Used in Haskell's translation of [n..m] with [n..m] = enumFromTo n m, a possible implementation being enumFromTo n m | n <= m = n : enumFromTo (succ n) m | otherwise = []. For example:

```
enumFromTo 6 10 :: [Int] = [6,7,8,9,10]
```
```
enumFromTo 42 1 :: [Integer] = []
```

enumFromThenTo :: a -> a -> a -> [a] #

Used in Haskell's translation of [n,n'..m] with [n,n'..m] = enumFromThenTo n n' m, a possible implementation being enumFromThenTo n n' m = worker (f x) (c x) n m, x = fromEnum n' - fromEnum n, c x = bool (>=) ((x 0) f n y | n > 0 = f (n - 1) (succ y) | n < 0 = f (n + 1) (pred y) | otherwise = y and worker s c v m | c v m = v : worker s c (s v) m | otherwise = [] For example:

enumFromThenTo 4 2 -6 :: [Integer] = [4,2,0,-2,-4,-6]

```
enumFromThenTo 6 8 2 :: [Int] = []
```

Instances

Instances details

Enum Bool	Since: base-2.1
Instance details Defined in GHC.Enum Methods succ :: Bool -> Bool # pred :: Bool -> Bool # toEnum :: Int -> Bool # fromEnum :: Bool -> Int # enumFrom :: Bool -> [Bool] # enumFromThen :: Bool -> Bool -> [Bool] # enumFromTo :: Bool -> Bool -> [Bool] # enumFromThenTo :: Bool -> Bool -> Bool -> [Bool] #
Enum Char	Since: base-2.1
Instance details Defined in GHC.Enum Methods succ :: Char -> Char # pred :: Char -> Char # toEnum :: Int -> Char # fromEnum :: Char -> Int # enumFrom :: Char -> [Char] # enumFromThen :: Char -> Char -> [Char] # enumFromTo :: Char -> Char -> [Char] # enumFromThenTo :: Char -> Char -> Char -> [Char] #
Enum Int	Since: base-2.1
Instance details Defined in GHC.Enum Methods succ :: Int -> Int # pred :: Int -> Int # toEnum :: Int -> Int # fromEnum :: Int -> Int # enumFrom :: Int -> [Int] # enumFromThen :: Int -> Int -> [Int] # enumFromTo :: Int -> Int -> [Int] # enumFromThenTo :: Int -> Int -> Int -> [Int] #
Enum Int8	Since: base-2.1
Instance details Defined in GHC.Int Methods succ :: Int8 -> Int8 # pred :: Int8 -> Int8 # toEnum :: Int -> Int8 # fromEnum :: Int8 -> Int # enumFrom :: Int8 -> [Int8] # enumFromThen :: Int8 -> Int8 -> [Int8] # enumFromTo :: Int8 -> Int8 -> [Int8] # enumFromThenTo :: Int8 -> Int8 -> Int8 -> [Int8] #
Enum Int16	Since: base-2.1
Instance details Defined in GHC.Int Methods succ :: Int16 -> Int16 # pred :: Int16 -> Int16 # toEnum :: Int -> Int16 # fromEnum :: Int16 -> Int # enumFrom :: Int16 -> [Int16] # enumFromThen :: Int16 -> Int16 -> [Int16] # enumFromTo :: Int16 -> Int16 -> [Int16] # enumFromThenTo :: Int16 -> Int16 -> Int16 -> [Int16] #
Enum Int32	Since: base-2.1
Instance details Defined in GHC.Int Methods succ :: Int32 -> Int32 # pred :: Int32 -> Int32 # toEnum :: Int -> Int32 # fromEnum :: Int32 -> Int # enumFrom :: Int32 -> [Int32] # enumFromThen :: Int32 -> Int32 -> [Int32] # enumFromTo :: Int32 -> Int32 -> [Int32] # enumFromThenTo :: Int32 -> Int32 -> Int32 -> [Int32] #
Enum Int64	Since: base-2.1
Instance details Defined in GHC.Int Methods succ :: Int64 -> Int64 # pred :: Int64 -> Int64 # toEnum :: Int -> Int64 # fromEnum :: Int64 -> Int # enumFrom :: Int64 -> [Int64] # enumFromThen :: Int64 -> Int64 -> [Int64] # enumFromTo :: Int64 -> Int64 -> [Int64] # enumFromThenTo :: Int64 -> Int64 -> Int64 -> [Int64] #
Enum Integer	Since: base-2.1
Instance details Defined in GHC.Enum Methods succ :: Integer -> Integer # pred :: Integer -> Integer # toEnum :: Int -> Integer # fromEnum :: Integer -> Int # enumFrom :: Integer -> [Integer] # enumFromThen :: Integer -> Integer -> [Integer] # enumFromTo :: Integer -> Integer -> [Integer] # enumFromThenTo :: Integer -> Integer -> Integer -> [Integer] #
Enum Natural	Since: base-4.8.0.0
Instance details Defined in GHC.Enum Methods succ :: Natural -> Natural # pred :: Natural -> Natural # toEnum :: Int -> Natural # fromEnum :: Natural -> Int # enumFrom :: Natural -> [Natural] # enumFromThen :: Natural -> Natural -> [Natural] # enumFromTo :: Natural -> Natural -> [Natural] # enumFromThenTo :: Natural -> Natural -> Natural -> [Natural] #
Enum Ordering	Since: base-2.1
Instance details Defined in GHC.Enum Methods succ :: Ordering -> Ordering # pred :: Ordering -> Ordering # toEnum :: Int -> Ordering # fromEnum :: Ordering -> Int # enumFrom :: Ordering -> [Ordering] # enumFromThen :: Ordering -> Ordering -> [Ordering] # enumFromTo :: Ordering -> Ordering -> [Ordering] # enumFromThenTo :: Ordering -> Ordering -> Ordering -> [Ordering] #
Enum Word	Since: base-2.1
Instance details Defined in GHC.Enum Methods succ :: Word -> Word # pred :: Word -> Word # toEnum :: Int -> Word # fromEnum :: Word -> Int # enumFrom :: Word -> [Word] # enumFromThen :: Word -> Word -> [Word] # enumFromTo :: Word -> Word -> [Word] # enumFromThenTo :: Word -> Word -> Word -> [Word] #
Enum Word8	Since: base-2.1
Instance details Defined in GHC.Word Methods succ :: Word8 -> Word8 # pred :: Word8 -> Word8 # toEnum :: Int -> Word8 # fromEnum :: Word8 -> Int # enumFrom :: Word8 -> [Word8] # enumFromThen :: Word8 -> Word8 -> [Word8] # enumFromTo :: Word8 -> Word8 -> [Word8] # enumFromThenTo :: Word8 -> Word8 -> Word8 -> [Word8] #
Enum Word16	Since: base-2.1
Instance details Defined in GHC.Word Methods succ :: Word16 -> Word16 # pred :: Word16 -> Word16 # toEnum :: Int -> Word16 # fromEnum :: Word16 -> Int # enumFrom :: Word16 -> [Word16] # enumFromThen :: Word16 -> Word16 -> [Word16] # enumFromTo :: Word16 -> Word16 -> [Word16] # enumFromThenTo :: Word16 -> Word16 -> Word16 -> [Word16] #
Enum Word32	Since: base-2.1
Instance details Defined in GHC.Word Methods succ :: Word32 -> Word32 # pred :: Word32 -> Word32 # toEnum :: Int -> Word32 # fromEnum :: Word32 -> Int # enumFrom :: Word32 -> [Word32] # enumFromThen :: Word32 -> Word32 -> [Word32] # enumFromTo :: Word32 -> Word32 -> [Word32] # enumFromThenTo :: Word32 -> Word32 -> Word32 -> [Word32] #
Enum Word64	Since: base-2.1
Instance details Defined in GHC.Word Methods succ :: Word64 -> Word64 # pred :: Word64 -> Word64 # toEnum :: Int -> Word64 # fromEnum :: Word64 -> Int # enumFrom :: Word64 -> [Word64] # enumFromThen :: Word64 -> Word64 -> [Word64] # enumFromTo :: Word64 -> Word64 -> [Word64] # enumFromThenTo :: Word64 -> Word64 -> Word64 -> [Word64] #
Enum VecCount	Since: base-4.10.0.0
Instance details Defined in GHC.Enum Methods succ :: VecCount -> VecCount # pred :: VecCount -> VecCount # toEnum :: Int -> VecCount # fromEnum :: VecCount -> Int # enumFrom :: VecCount -> [VecCount] # enumFromThen :: VecCount -> VecCount -> [VecCount] # enumFromTo :: VecCount -> VecCount -> [VecCount] # enumFromThenTo :: VecCount -> VecCount -> VecCount -> [VecCount] #
Enum VecElem	Since: base-4.10.0.0
Instance details Defined in GHC.Enum Methods succ :: VecElem -> VecElem # pred :: VecElem -> VecElem # toEnum :: Int -> VecElem # fromEnum :: VecElem -> Int # enumFrom :: VecElem -> [VecElem] # enumFromThen :: VecElem -> VecElem -> [VecElem] # enumFromTo :: VecElem -> VecElem -> [VecElem] # enumFromThenTo :: VecElem -> VecElem -> VecElem -> [VecElem] #
Enum ()	Since: base-2.1
Instance details Defined in GHC.Enum Methods succ :: () -> () # pred :: () -> () # toEnum :: Int -> () # fromEnum :: () -> Int # enumFrom :: () -> [()] # enumFromThen :: () -> () -> [()] # enumFromTo :: () -> () -> [()] # enumFromThenTo :: () -> () -> () -> [()] #
Enum Associativity	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Methods succ :: Associativity -> Associativity # pred :: Associativity -> Associativity # toEnum :: Int -> Associativity # fromEnum :: Associativity -> Int # enumFrom :: Associativity -> [Associativity] # enumFromThen :: Associativity -> Associativity -> [Associativity] # enumFromTo :: Associativity -> Associativity -> [Associativity] # enumFromThenTo :: Associativity -> Associativity -> Associativity -> [Associativity] #
Enum SourceUnpackedness	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Methods succ :: SourceUnpackedness -> SourceUnpackedness # pred :: SourceUnpackedness -> SourceUnpackedness # toEnum :: Int -> SourceUnpackedness # fromEnum :: SourceUnpackedness -> Int # enumFrom :: SourceUnpackedness -> [SourceUnpackedness] # enumFromThen :: SourceUnpackedness -> SourceUnpackedness -> [SourceUnpackedness] # enumFromTo :: SourceUnpackedness -> SourceUnpackedness -> [SourceUnpackedness] # enumFromThenTo :: SourceUnpackedness -> SourceUnpackedness -> SourceUnpackedness -> [SourceUnpackedness] #
Enum SourceStrictness	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Methods succ :: SourceStrictness -> SourceStrictness # pred :: SourceStrictness -> SourceStrictness # toEnum :: Int -> SourceStrictness # fromEnum :: SourceStrictness -> Int # enumFrom :: SourceStrictness -> [SourceStrictness] # enumFromThen :: SourceStrictness -> SourceStrictness -> [SourceStrictness] # enumFromTo :: SourceStrictness -> SourceStrictness -> [SourceStrictness] # enumFromThenTo :: SourceStrictness -> SourceStrictness -> SourceStrictness -> [SourceStrictness] #
Enum DecidedStrictness	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Methods succ :: DecidedStrictness -> DecidedStrictness # pred :: DecidedStrictness -> DecidedStrictness # toEnum :: Int -> DecidedStrictness # fromEnum :: DecidedStrictness -> Int # enumFrom :: DecidedStrictness -> [DecidedStrictness] # enumFromThen :: DecidedStrictness -> DecidedStrictness -> [DecidedStrictness] # enumFromTo :: DecidedStrictness -> DecidedStrictness -> [DecidedStrictness] # enumFromThenTo :: DecidedStrictness -> DecidedStrictness -> DecidedStrictness -> [DecidedStrictness] #
Enum CChar
Instance details Defined in Foreign.C.Types Methods succ :: CChar -> CChar # pred :: CChar -> CChar # toEnum :: Int -> CChar # fromEnum :: CChar -> Int # enumFrom :: CChar -> [CChar] # enumFromThen :: CChar -> CChar -> [CChar] # enumFromTo :: CChar -> CChar -> [CChar] # enumFromThenTo :: CChar -> CChar -> CChar -> [CChar] #
Enum CSChar
Instance details Defined in Foreign.C.Types Methods succ :: CSChar -> CSChar # pred :: CSChar -> CSChar # toEnum :: Int -> CSChar # fromEnum :: CSChar -> Int # enumFrom :: CSChar -> [CSChar] # enumFromThen :: CSChar -> CSChar -> [CSChar] # enumFromTo :: CSChar -> CSChar -> [CSChar] # enumFromThenTo :: CSChar -> CSChar -> CSChar -> [CSChar] #
Enum CUChar
Instance details Defined in Foreign.C.Types Methods succ :: CUChar -> CUChar # pred :: CUChar -> CUChar # toEnum :: Int -> CUChar # fromEnum :: CUChar -> Int # enumFrom :: CUChar -> [CUChar] # enumFromThen :: CUChar -> CUChar -> [CUChar] # enumFromTo :: CUChar -> CUChar -> [CUChar] # enumFromThenTo :: CUChar -> CUChar -> CUChar -> [CUChar] #
Enum CShort
Instance details Defined in Foreign.C.Types Methods succ :: CShort -> CShort # pred :: CShort -> CShort # toEnum :: Int -> CShort # fromEnum :: CShort -> Int # enumFrom :: CShort -> [CShort] # enumFromThen :: CShort -> CShort -> [CShort] # enumFromTo :: CShort -> CShort -> [CShort] # enumFromThenTo :: CShort -> CShort -> CShort -> [CShort] #
Enum CUShort
Instance details Defined in Foreign.C.Types Methods succ :: CUShort -> CUShort # pred :: CUShort -> CUShort # toEnum :: Int -> CUShort # fromEnum :: CUShort -> Int # enumFrom :: CUShort -> [CUShort] # enumFromThen :: CUShort -> CUShort -> [CUShort] # enumFromTo :: CUShort -> CUShort -> [CUShort] # enumFromThenTo :: CUShort -> CUShort -> CUShort -> [CUShort] #
Enum CInt
Instance details Defined in Foreign.C.Types Methods succ :: CInt -> CInt # pred :: CInt -> CInt # toEnum :: Int -> CInt # fromEnum :: CInt -> Int # enumFrom :: CInt -> [CInt] # enumFromThen :: CInt -> CInt -> [CInt] # enumFromTo :: CInt -> CInt -> [CInt] # enumFromThenTo :: CInt -> CInt -> CInt -> [CInt] #
Enum CUInt
Instance details Defined in Foreign.C.Types Methods succ :: CUInt -> CUInt # pred :: CUInt -> CUInt # toEnum :: Int -> CUInt # fromEnum :: CUInt -> Int # enumFrom :: CUInt -> [CUInt] # enumFromThen :: CUInt -> CUInt -> [CUInt] # enumFromTo :: CUInt -> CUInt -> [CUInt] # enumFromThenTo :: CUInt -> CUInt -> CUInt -> [CUInt] #
Enum CLong
Instance details Defined in Foreign.C.Types Methods succ :: CLong -> CLong # pred :: CLong -> CLong # toEnum :: Int -> CLong # fromEnum :: CLong -> Int # enumFrom :: CLong -> [CLong] # enumFromThen :: CLong -> CLong -> [CLong] # enumFromTo :: CLong -> CLong -> [CLong] # enumFromThenTo :: CLong -> CLong -> CLong -> [CLong] #
Enum CULong
Instance details Defined in Foreign.C.Types Methods succ :: CULong -> CULong # pred :: CULong -> CULong # toEnum :: Int -> CULong # fromEnum :: CULong -> Int # enumFrom :: CULong -> [CULong] # enumFromThen :: CULong -> CULong -> [CULong] # enumFromTo :: CULong -> CULong -> [CULong] # enumFromThenTo :: CULong -> CULong -> CULong -> [CULong] #
Enum CLLong
Instance details Defined in Foreign.C.Types Methods succ :: CLLong -> CLLong # pred :: CLLong -> CLLong # toEnum :: Int -> CLLong # fromEnum :: CLLong -> Int # enumFrom :: CLLong -> [CLLong] # enumFromThen :: CLLong -> CLLong -> [CLLong] # enumFromTo :: CLLong -> CLLong -> [CLLong] # enumFromThenTo :: CLLong -> CLLong -> CLLong -> [CLLong] #
Enum CULLong
Instance details Defined in Foreign.C.Types Methods succ :: CULLong -> CULLong # pred :: CULLong -> CULLong # toEnum :: Int -> CULLong # fromEnum :: CULLong -> Int # enumFrom :: CULLong -> [CULLong] # enumFromThen :: CULLong -> CULLong -> [CULLong] # enumFromTo :: CULLong -> CULLong -> [CULLong] # enumFromThenTo :: CULLong -> CULLong -> CULLong -> [CULLong] #
Enum CBool
Instance details Defined in Foreign.C.Types Methods succ :: CBool -> CBool # pred :: CBool -> CBool # toEnum :: Int -> CBool # fromEnum :: CBool -> Int # enumFrom :: CBool -> [CBool] # enumFromThen :: CBool -> CBool -> [CBool] # enumFromTo :: CBool -> CBool -> [CBool] # enumFromThenTo :: CBool -> CBool -> CBool -> [CBool] #
Enum CFloat
Instance details Defined in Foreign.C.Types Methods succ :: CFloat -> CFloat # pred :: CFloat -> CFloat # toEnum :: Int -> CFloat # fromEnum :: CFloat -> Int # enumFrom :: CFloat -> [CFloat] # enumFromThen :: CFloat -> CFloat -> [CFloat] # enumFromTo :: CFloat -> CFloat -> [CFloat] # enumFromThenTo :: CFloat -> CFloat -> CFloat -> [CFloat] #
Enum CDouble
Instance details Defined in Foreign.C.Types Methods succ :: CDouble -> CDouble # pred :: CDouble -> CDouble # toEnum :: Int -> CDouble # fromEnum :: CDouble -> Int # enumFrom :: CDouble -> [CDouble] # enumFromThen :: CDouble -> CDouble -> [CDouble] # enumFromTo :: CDouble -> CDouble -> [CDouble] # enumFromThenTo :: CDouble -> CDouble -> CDouble -> [CDouble] #
Enum CPtrdiff
Instance details Defined in Foreign.C.Types Methods succ :: CPtrdiff -> CPtrdiff # pred :: CPtrdiff -> CPtrdiff # toEnum :: Int -> CPtrdiff # fromEnum :: CPtrdiff -> Int # enumFrom :: CPtrdiff -> [CPtrdiff] # enumFromThen :: CPtrdiff -> CPtrdiff -> [CPtrdiff] # enumFromTo :: CPtrdiff -> CPtrdiff -> [CPtrdiff] # enumFromThenTo :: CPtrdiff -> CPtrdiff -> CPtrdiff -> [CPtrdiff] #
Enum CSize
Instance details Defined in Foreign.C.Types Methods succ :: CSize -> CSize # pred :: CSize -> CSize # toEnum :: Int -> CSize # fromEnum :: CSize -> Int # enumFrom :: CSize -> [CSize] # enumFromThen :: CSize -> CSize -> [CSize] # enumFromTo :: CSize -> CSize -> [CSize] # enumFromThenTo :: CSize -> CSize -> CSize -> [CSize] #
Enum CWchar
Instance details Defined in Foreign.C.Types Methods succ :: CWchar -> CWchar # pred :: CWchar -> CWchar # toEnum :: Int -> CWchar # fromEnum :: CWchar -> Int # enumFrom :: CWchar -> [CWchar] # enumFromThen :: CWchar -> CWchar -> [CWchar] # enumFromTo :: CWchar -> CWchar -> [CWchar] # enumFromThenTo :: CWchar -> CWchar -> CWchar -> [CWchar] #
Enum CSigAtomic
Instance details Defined in Foreign.C.Types Methods succ :: CSigAtomic -> CSigAtomic # pred :: CSigAtomic -> CSigAtomic # toEnum :: Int -> CSigAtomic # fromEnum :: CSigAtomic -> Int # enumFrom :: CSigAtomic -> [CSigAtomic] # enumFromThen :: CSigAtomic -> CSigAtomic -> [CSigAtomic] # enumFromTo :: CSigAtomic -> CSigAtomic -> [CSigAtomic] # enumFromThenTo :: CSigAtomic -> CSigAtomic -> CSigAtomic -> [CSigAtomic] #
Enum CClock
Instance details Defined in Foreign.C.Types Methods succ :: CClock -> CClock # pred :: CClock -> CClock # toEnum :: Int -> CClock # fromEnum :: CClock -> Int # enumFrom :: CClock -> [CClock] # enumFromThen :: CClock -> CClock -> [CClock] # enumFromTo :: CClock -> CClock -> [CClock] # enumFromThenTo :: CClock -> CClock -> CClock -> [CClock] #
Enum CTime
Instance details Defined in Foreign.C.Types Methods succ :: CTime -> CTime # pred :: CTime -> CTime # toEnum :: Int -> CTime # fromEnum :: CTime -> Int # enumFrom :: CTime -> [CTime] # enumFromThen :: CTime -> CTime -> [CTime] # enumFromTo :: CTime -> CTime -> [CTime] # enumFromThenTo :: CTime -> CTime -> CTime -> [CTime] #
Enum CUSeconds
Instance details Defined in Foreign.C.Types Methods succ :: CUSeconds -> CUSeconds # pred :: CUSeconds -> CUSeconds # toEnum :: Int -> CUSeconds # fromEnum :: CUSeconds -> Int # enumFrom :: CUSeconds -> [CUSeconds] # enumFromThen :: CUSeconds -> CUSeconds -> [CUSeconds] # enumFromTo :: CUSeconds -> CUSeconds -> [CUSeconds] # enumFromThenTo :: CUSeconds -> CUSeconds -> CUSeconds -> [CUSeconds] #
Enum CSUSeconds
Instance details Defined in Foreign.C.Types Methods succ :: CSUSeconds -> CSUSeconds # pred :: CSUSeconds -> CSUSeconds # toEnum :: Int -> CSUSeconds # fromEnum :: CSUSeconds -> Int # enumFrom :: CSUSeconds -> [CSUSeconds] # enumFromThen :: CSUSeconds -> CSUSeconds -> [CSUSeconds] # enumFromTo :: CSUSeconds -> CSUSeconds -> [CSUSeconds] # enumFromThenTo :: CSUSeconds -> CSUSeconds -> CSUSeconds -> [CSUSeconds] #
Enum CIntPtr
Instance details Defined in Foreign.C.Types Methods succ :: CIntPtr -> CIntPtr # pred :: CIntPtr -> CIntPtr # toEnum :: Int -> CIntPtr # fromEnum :: CIntPtr -> Int # enumFrom :: CIntPtr -> [CIntPtr] # enumFromThen :: CIntPtr -> CIntPtr -> [CIntPtr] # enumFromTo :: CIntPtr -> CIntPtr -> [CIntPtr] # enumFromThenTo :: CIntPtr -> CIntPtr -> CIntPtr -> [CIntPtr] #
Enum CUIntPtr
Instance details Defined in Foreign.C.Types Methods succ :: CUIntPtr -> CUIntPtr # pred :: CUIntPtr -> CUIntPtr # toEnum :: Int -> CUIntPtr # fromEnum :: CUIntPtr -> Int # enumFrom :: CUIntPtr -> [CUIntPtr] # enumFromThen :: CUIntPtr -> CUIntPtr -> [CUIntPtr] # enumFromTo :: CUIntPtr -> CUIntPtr -> [CUIntPtr] # enumFromThenTo :: CUIntPtr -> CUIntPtr -> CUIntPtr -> [CUIntPtr] #
Enum CIntMax
Instance details Defined in Foreign.C.Types Methods succ :: CIntMax -> CIntMax # pred :: CIntMax -> CIntMax # toEnum :: Int -> CIntMax # fromEnum :: CIntMax -> Int # enumFrom :: CIntMax -> [CIntMax] # enumFromThen :: CIntMax -> CIntMax -> [CIntMax] # enumFromTo :: CIntMax -> CIntMax -> [CIntMax] # enumFromThenTo :: CIntMax -> CIntMax -> CIntMax -> [CIntMax] #
Enum CUIntMax
Instance details Defined in Foreign.C.Types Methods succ :: CUIntMax -> CUIntMax # pred :: CUIntMax -> CUIntMax # toEnum :: Int -> CUIntMax # fromEnum :: CUIntMax -> Int # enumFrom :: CUIntMax -> [CUIntMax] # enumFromThen :: CUIntMax -> CUIntMax -> [CUIntMax] # enumFromTo :: CUIntMax -> CUIntMax -> [CUIntMax] # enumFromThenTo :: CUIntMax -> CUIntMax -> CUIntMax -> [CUIntMax] #
Enum UTF32_Invalid
Instance details Defined in Basement.String.Encoding.UTF32 Methods succ :: UTF32_Invalid -> UTF32_Invalid # pred :: UTF32_Invalid -> UTF32_Invalid # toEnum :: Int -> UTF32_Invalid # fromEnum :: UTF32_Invalid -> Int # enumFrom :: UTF32_Invalid -> [UTF32_Invalid] # enumFromThen :: UTF32_Invalid -> UTF32_Invalid -> [UTF32_Invalid] # enumFromTo :: UTF32_Invalid -> UTF32_Invalid -> [UTF32_Invalid] # enumFromThenTo :: UTF32_Invalid -> UTF32_Invalid -> UTF32_Invalid -> [UTF32_Invalid] #
Enum Encoding
Instance details Defined in Basement.String Methods succ :: Encoding -> Encoding # pred :: Encoding -> Encoding # toEnum :: Int -> Encoding # fromEnum :: Encoding -> Int # enumFrom :: Encoding -> [Encoding] # enumFromThen :: Encoding -> Encoding -> [Encoding] # enumFromTo :: Encoding -> Encoding -> [Encoding] # enumFromThenTo :: Encoding -> Encoding -> Encoding -> [Encoding] #
Enum Clock
Instance details Defined in System.Clock Methods succ :: Clock -> Clock # pred :: Clock -> Clock # toEnum :: Int -> Clock # fromEnum :: Clock -> Int # enumFrom :: Clock -> [Clock] # enumFromThen :: Clock -> Clock -> [Clock] # enumFromTo :: Clock -> Clock -> [Clock] # enumFromThenTo :: Clock -> Clock -> Clock -> [Clock] #
Enum HelpFormat
Instance details Defined in System.Console.CmdArgs.Explicit.Help Methods succ :: HelpFormat -> HelpFormat # pred :: HelpFormat -> HelpFormat # toEnum :: Int -> HelpFormat # fromEnum :: HelpFormat -> Int # enumFrom :: HelpFormat -> [HelpFormat] # enumFromThen :: HelpFormat -> HelpFormat -> [HelpFormat] # enumFromTo :: HelpFormat -> HelpFormat -> [HelpFormat] # enumFromThenTo :: HelpFormat -> HelpFormat -> HelpFormat -> [HelpFormat] #
Enum CryptoError
Instance details Defined in Crypto.Error.Types Methods succ :: CryptoError -> CryptoError # pred :: CryptoError -> CryptoError # toEnum :: Int -> CryptoError # fromEnum :: CryptoError -> Int # enumFrom :: CryptoError -> [CryptoError] # enumFromThen :: CryptoError -> CryptoError -> [CryptoError] # enumFromTo :: CryptoError -> CryptoError -> [CryptoError] # enumFromThenTo :: CryptoError -> CryptoError -> CryptoError -> [CryptoError] #
Enum FileType
Instance details Defined in System.Directory.Internal.Common Methods succ :: FileType -> FileType # pred :: FileType -> FileType # toEnum :: Int -> FileType # fromEnum :: FileType -> Int # enumFrom :: FileType -> [FileType] # enumFromThen :: FileType -> FileType -> [FileType] # enumFromTo :: FileType -> FileType -> [FileType] # enumFromThenTo :: FileType -> FileType -> FileType -> [FileType] #
Enum XdgDirectory
Instance details Defined in System.Directory.Internal.Common Methods succ :: XdgDirectory -> XdgDirectory # pred :: XdgDirectory -> XdgDirectory # toEnum :: Int -> XdgDirectory # fromEnum :: XdgDirectory -> Int # enumFrom :: XdgDirectory -> [XdgDirectory] # enumFromThen :: XdgDirectory -> XdgDirectory -> [XdgDirectory] # enumFromTo :: XdgDirectory -> XdgDirectory -> [XdgDirectory] # enumFromThenTo :: XdgDirectory -> XdgDirectory -> XdgDirectory -> [XdgDirectory] #
Enum XdgDirectoryList
Instance details Defined in System.Directory.Internal.Common Methods succ :: XdgDirectoryList -> XdgDirectoryList # pred :: XdgDirectoryList -> XdgDirectoryList # toEnum :: Int -> XdgDirectoryList # fromEnum :: XdgDirectoryList -> Int # enumFrom :: XdgDirectoryList -> [XdgDirectoryList] # enumFromThen :: XdgDirectoryList -> XdgDirectoryList -> [XdgDirectoryList] # enumFromTo :: XdgDirectoryList -> XdgDirectoryList -> [XdgDirectoryList] # enumFromThenTo :: XdgDirectoryList -> XdgDirectoryList -> XdgDirectoryList -> [XdgDirectoryList] #
Enum Extension
Instance details Defined in GHC.LanguageExtensions.Type Methods succ :: Extension -> Extension # pred :: Extension -> Extension # toEnum :: Int -> Extension # fromEnum :: Extension -> Int # enumFrom :: Extension -> [Extension] # enumFromThen :: Extension -> Extension -> [Extension] # enumFromTo :: Extension -> Extension -> [Extension] # enumFromThenTo :: Extension -> Extension -> Extension -> [Extension] #
Enum Status
Instance details Defined in Hledger.Data.Types Methods succ :: Status -> Status # pred :: Status -> Status # toEnum :: Int -> Status # fromEnum :: Status -> Int # enumFrom :: Status -> [Status] # enumFromThen :: Status -> Status -> [Status] # enumFromTo :: Status -> Status -> [Status] # enumFromThenTo :: Status -> Status -> Status -> [Status] #
Enum Status
Instance details Defined in Network.HTTP.Types.Status Methods succ :: Status -> Status # pred :: Status -> Status # toEnum :: Int -> Status # fromEnum :: Status -> Int # enumFrom :: Status -> [Status] # enumFromThen :: Status -> Status -> [Status] # enumFromTo :: Status -> Status -> [Status] # enumFromThenTo :: Status -> Status -> Status -> [Status] #
Enum StdMethod
Instance details Defined in Network.HTTP.Types.Method Methods succ :: StdMethod -> StdMethod # pred :: StdMethod -> StdMethod # toEnum :: Int -> StdMethod # fromEnum :: StdMethod -> Int # enumFrom :: StdMethod -> [StdMethod] # enumFromThen :: StdMethod -> StdMethod -> [StdMethod] # enumFromTo :: StdMethod -> StdMethod -> [StdMethod] # enumFromThenTo :: StdMethod -> StdMethod -> StdMethod -> [StdMethod] #
Enum IP
Instance details Defined in Data.IP.Addr Methods succ :: IP -> IP # pred :: IP -> IP # toEnum :: Int -> IP # fromEnum :: IP -> Int # enumFrom :: IP -> [IP] # enumFromThen :: IP -> IP -> [IP] # enumFromTo :: IP -> IP -> [IP] # enumFromThenTo :: IP -> IP -> IP -> [IP] #
Enum IPv4
Instance details Defined in Data.IP.Addr Methods succ :: IPv4 -> IPv4 # pred :: IPv4 -> IPv4 # toEnum :: Int -> IPv4 # fromEnum :: IPv4 -> Int # enumFrom :: IPv4 -> [IPv4] # enumFromThen :: IPv4 -> IPv4 -> [IPv4] # enumFromTo :: IPv4 -> IPv4 -> [IPv4] # enumFromThenTo :: IPv4 -> IPv4 -> IPv4 -> [IPv4] #
Enum IPv6
Instance details Defined in Data.IP.Addr Methods succ :: IPv6 -> IPv6 # pred :: IPv6 -> IPv6 # toEnum :: Int -> IPv6 # fromEnum :: IPv6 -> Int # enumFrom :: IPv6 -> [IPv6] # enumFromThen :: IPv6 -> IPv6 -> [IPv6] # enumFromTo :: IPv6 -> IPv6 -> [IPv6] # enumFromThenTo :: IPv6 -> IPv6 -> IPv6 -> [IPv6] #
Enum Style
Instance details Defined in Text.Libyaml Methods succ :: Style -> Style # pred :: Style -> Style # toEnum :: Int -> Style # fromEnum :: Style -> Int # enumFrom :: Style -> [Style] # enumFromThen :: Style -> Style -> [Style] # enumFromTo :: Style -> Style -> [Style] # enumFromThenTo :: Style -> Style -> Style -> [Style] #
Enum SequenceStyle
Instance details Defined in Text.Libyaml Methods succ :: SequenceStyle -> SequenceStyle # pred :: SequenceStyle -> SequenceStyle # toEnum :: Int -> SequenceStyle # fromEnum :: SequenceStyle -> Int # enumFrom :: SequenceStyle -> [SequenceStyle] # enumFromThen :: SequenceStyle -> SequenceStyle -> [SequenceStyle] # enumFromTo :: SequenceStyle -> SequenceStyle -> [SequenceStyle] # enumFromThenTo :: SequenceStyle -> SequenceStyle -> SequenceStyle -> [SequenceStyle] #
Enum MappingStyle
Instance details Defined in Text.Libyaml Methods succ :: MappingStyle -> MappingStyle # pred :: MappingStyle -> MappingStyle # toEnum :: Int -> MappingStyle # fromEnum :: MappingStyle -> Int # enumFrom :: MappingStyle -> [MappingStyle] # enumFromThen :: MappingStyle -> MappingStyle -> [MappingStyle] # enumFromTo :: MappingStyle -> MappingStyle -> [MappingStyle] # enumFromThenTo :: MappingStyle -> MappingStyle -> MappingStyle -> [MappingStyle] #
Enum PortNumber
Instance details Defined in Network.Socket.Types Methods succ :: PortNumber -> PortNumber # pred :: PortNumber -> PortNumber # toEnum :: Int -> PortNumber # fromEnum :: PortNumber -> Int # enumFrom :: PortNumber -> [PortNumber] # enumFromThen :: PortNumber -> PortNumber -> [PortNumber] # enumFromTo :: PortNumber -> PortNumber -> [PortNumber] # enumFromThenTo :: PortNumber -> PortNumber -> PortNumber -> [PortNumber] #
Enum Checkmark
Instance details Defined in Database.Persist.Types.Base Methods succ :: Checkmark -> Checkmark # pred :: Checkmark -> Checkmark # toEnum :: Int -> Checkmark # fromEnum :: Checkmark -> Int # enumFrom :: Checkmark -> [Checkmark] # enumFromThen :: Checkmark -> Checkmark -> [Checkmark] # enumFromTo :: Checkmark -> Checkmark -> [Checkmark] # enumFromThenTo :: Checkmark -> Checkmark -> Checkmark -> [Checkmark] #
Enum VarType
Instance details Defined in Text.Shakespeare Methods succ :: VarType -> VarType # pred :: VarType -> VarType # toEnum :: Int -> VarType # fromEnum :: VarType -> Int # enumFrom :: VarType -> [VarType] # enumFromThen :: VarType -> VarType -> [VarType] # enumFromTo :: VarType -> VarType -> [VarType] # enumFromThenTo :: VarType -> VarType -> VarType -> [VarType] #
Enum NominalDiffTime
Instance details Defined in Data.Time.Clock.Internal.NominalDiffTime Methods succ :: NominalDiffTime -> NominalDiffTime # pred :: NominalDiffTime -> NominalDiffTime # toEnum :: Int -> NominalDiffTime # fromEnum :: NominalDiffTime -> Int # enumFrom :: NominalDiffTime -> [NominalDiffTime] # enumFromThen :: NominalDiffTime -> NominalDiffTime -> [NominalDiffTime] # enumFromTo :: NominalDiffTime -> NominalDiffTime -> [NominalDiffTime] # enumFromThenTo :: NominalDiffTime -> NominalDiffTime -> NominalDiffTime -> [NominalDiffTime] #
Enum DiffTime
Instance details Defined in Data.Time.Clock.Internal.DiffTime Methods succ :: DiffTime -> DiffTime # pred :: DiffTime -> DiffTime # toEnum :: Int -> DiffTime # fromEnum :: DiffTime -> Int # enumFrom :: DiffTime -> [DiffTime] # enumFromThen :: DiffTime -> DiffTime -> [DiffTime] # enumFromTo :: DiffTime -> DiffTime -> [DiffTime] # enumFromThenTo :: DiffTime -> DiffTime -> DiffTime -> [DiffTime] #
Enum DayOfWeek	"Circular", so for example `[Tuesday ..]` gives an endless sequence. Also: `fromEnum` gives [1 .. 7] for [Monday .. Sunday], and `toEnum` performs mod 7 to give a cycle of days.
Instance details Defined in Data.Time.Calendar.Week Methods succ :: DayOfWeek -> DayOfWeek # pred :: DayOfWeek -> DayOfWeek # toEnum :: Int -> DayOfWeek # fromEnum :: DayOfWeek -> Int # enumFrom :: DayOfWeek -> [DayOfWeek] # enumFromThen :: DayOfWeek -> DayOfWeek -> [DayOfWeek] # enumFromTo :: DayOfWeek -> DayOfWeek -> [DayOfWeek] # enumFromThenTo :: DayOfWeek -> DayOfWeek -> DayOfWeek -> [DayOfWeek] #
Enum Day
Instance details Defined in Data.Time.Calendar.Days Methods succ :: Day -> Day # pred :: Day -> Day # toEnum :: Int -> Day # fromEnum :: Day -> Int # enumFrom :: Day -> [Day] # enumFromThen :: Day -> Day -> [Day] # enumFromTo :: Day -> Day -> [Day] # enumFromThenTo :: Day -> Day -> Day -> [Day] #
Enum Enctype
Instance details Defined in Yesod.Form.Types Methods succ :: Enctype -> Enctype # pred :: Enctype -> Enctype # toEnum :: Int -> Enctype # fromEnum :: Enctype -> Int # enumFrom :: Enctype -> [Enctype] # enumFromThen :: Enctype -> Enctype -> [Enctype] # enumFromTo :: Enctype -> Enctype -> [Enctype] # enumFromThenTo :: Enctype -> Enctype -> Enctype -> [Enctype] #
Enum DefaultEnv
Instance details Defined in Yesod.Default.Config Methods succ :: DefaultEnv -> DefaultEnv # pred :: DefaultEnv -> DefaultEnv # toEnum :: Int -> DefaultEnv # fromEnum :: DefaultEnv -> Int # enumFrom :: DefaultEnv -> [DefaultEnv] # enumFromThen :: DefaultEnv -> DefaultEnv -> [DefaultEnv] # enumFromTo :: DefaultEnv -> DefaultEnv -> [DefaultEnv] # enumFromThenTo :: DefaultEnv -> DefaultEnv -> DefaultEnv -> [DefaultEnv] #
Enum Format
Instance details Defined in Codec.Compression.Zlib.Stream Methods succ :: Format -> Format # pred :: Format -> Format # toEnum :: Int -> Format # fromEnum :: Format -> Int # enumFrom :: Format -> [Format] # enumFromThen :: Format -> Format -> [Format] # enumFromTo :: Format -> Format -> [Format] # enumFromThenTo :: Format -> Format -> Format -> [Format] #
Enum Method
Instance details Defined in Codec.Compression.Zlib.Stream Methods succ :: Method -> Method # pred :: Method -> Method # toEnum :: Int -> Method # fromEnum :: Method -> Int # enumFrom :: Method -> [Method] # enumFromThen :: Method -> Method -> [Method] # enumFromTo :: Method -> Method -> [Method] # enumFromThenTo :: Method -> Method -> Method -> [Method] #
Enum CompressionStrategy
Instance details Defined in Codec.Compression.Zlib.Stream Methods succ :: CompressionStrategy -> CompressionStrategy # pred :: CompressionStrategy -> CompressionStrategy # toEnum :: Int -> CompressionStrategy # fromEnum :: CompressionStrategy -> Int # enumFrom :: CompressionStrategy -> [CompressionStrategy] # enumFromThen :: CompressionStrategy -> CompressionStrategy -> [CompressionStrategy] # enumFromTo :: CompressionStrategy -> CompressionStrategy -> [CompressionStrategy] # enumFromThenTo :: CompressionStrategy -> CompressionStrategy -> CompressionStrategy -> [CompressionStrategy] #
Enum Capability Source #
Instance details Defined in Hledger.Web.WebOptions Methods succ :: Capability -> Capability # pred :: Capability -> Capability # toEnum :: Int -> Capability # fromEnum :: Capability -> Int # enumFrom :: Capability -> [Capability] # enumFromThen :: Capability -> Capability -> [Capability] # enumFromTo :: Capability -> Capability -> [Capability] # enumFromThenTo :: Capability -> Capability -> Capability -> [Capability] #
Enum EventType
Instance details Defined in Text.Libyaml Methods succ :: EventType -> EventType # pred :: EventType -> EventType # toEnum :: Int -> EventType # fromEnum :: EventType -> Int # enumFrom :: EventType -> [EventType] # enumFromThen :: EventType -> EventType -> [EventType] # enumFromTo :: EventType -> EventType -> [EventType] # enumFromThenTo :: EventType -> EventType -> EventType -> [EventType] #
Enum TagRender
Instance details Defined in Text.Libyaml Methods succ :: TagRender -> TagRender # pred :: TagRender -> TagRender # toEnum :: Int -> TagRender # fromEnum :: TagRender -> Int # enumFrom :: TagRender -> [TagRender] # enumFromThen :: TagRender -> TagRender -> [TagRender] # enumFromTo :: TagRender -> TagRender -> [TagRender] # enumFromThenTo :: TagRender -> TagRender -> TagRender -> [TagRender] #
Integral a => Enum (Ratio a)	Since: base-2.0.1
Instance details Defined in GHC.Real Methods succ :: Ratio a -> Ratio a # pred :: Ratio a -> Ratio a # toEnum :: Int -> Ratio a # fromEnum :: Ratio a -> Int # enumFrom :: Ratio a -> [Ratio a] # enumFromThen :: Ratio a -> Ratio a -> [Ratio a] # enumFromTo :: Ratio a -> Ratio a -> [Ratio a] # enumFromThenTo :: Ratio a -> Ratio a -> Ratio a -> [Ratio a] #
Integral i => Enum (DecimalRaw i)
Instance details Defined in Data.Decimal Methods succ :: DecimalRaw i -> DecimalRaw i # pred :: DecimalRaw i -> DecimalRaw i # toEnum :: Int -> DecimalRaw i # fromEnum :: DecimalRaw i -> Int # enumFrom :: DecimalRaw i -> [DecimalRaw i] # enumFromThen :: DecimalRaw i -> DecimalRaw i -> [DecimalRaw i] # enumFromTo :: DecimalRaw i -> DecimalRaw i -> [DecimalRaw i] # enumFromThenTo :: DecimalRaw i -> DecimalRaw i -> DecimalRaw i -> [DecimalRaw i] #
Enum a => Enum (Min a)	Since: base-4.9.0.0
Instance details Defined in Data.Semigroup Methods succ :: Min a -> Min a # pred :: Min a -> Min a # toEnum :: Int -> Min a # fromEnum :: Min a -> Int # enumFrom :: Min a -> [Min a] # enumFromThen :: Min a -> Min a -> [Min a] # enumFromTo :: Min a -> Min a -> [Min a] # enumFromThenTo :: Min a -> Min a -> Min a -> [Min a] #
Enum a => Enum (Max a)	Since: base-4.9.0.0
Instance details Defined in Data.Semigroup Methods succ :: Max a -> Max a # pred :: Max a -> Max a # toEnum :: Int -> Max a # fromEnum :: Max a -> Int # enumFrom :: Max a -> [Max a] # enumFromThen :: Max a -> Max a -> [Max a] # enumFromTo :: Max a -> Max a -> [Max a] # enumFromThenTo :: Max a -> Max a -> Max a -> [Max a] #
Enum a => Enum (First a)	Since: base-4.9.0.0
Instance details Defined in Data.Semigroup Methods succ :: First a -> First a # pred :: First a -> First a # toEnum :: Int -> First a # fromEnum :: First a -> Int # enumFrom :: First a -> [First a] # enumFromThen :: First a -> First a -> [First a] # enumFromTo :: First a -> First a -> [First a] # enumFromThenTo :: First a -> First a -> First a -> [First a] #
Enum a => Enum (Last a)	Since: base-4.9.0.0
Instance details Defined in Data.Semigroup Methods succ :: Last a -> Last a # pred :: Last a -> Last a # toEnum :: Int -> Last a # fromEnum :: Last a -> Int # enumFrom :: Last a -> [Last a] # enumFromThen :: Last a -> Last a -> [Last a] # enumFromTo :: Last a -> Last a -> [Last a] # enumFromThenTo :: Last a -> Last a -> Last a -> [Last a] #
Enum a => Enum (WrappedMonoid a)	Since: base-4.9.0.0
Instance details Defined in Data.Semigroup Methods succ :: WrappedMonoid a -> WrappedMonoid a # pred :: WrappedMonoid a -> WrappedMonoid a # toEnum :: Int -> WrappedMonoid a # fromEnum :: WrappedMonoid a -> Int # enumFrom :: WrappedMonoid a -> [WrappedMonoid a] # enumFromThen :: WrappedMonoid a -> WrappedMonoid a -> [WrappedMonoid a] # enumFromTo :: WrappedMonoid a -> WrappedMonoid a -> [WrappedMonoid a] # enumFromThenTo :: WrappedMonoid a -> WrappedMonoid a -> WrappedMonoid a -> [WrappedMonoid a] #
Enum a => Enum (Identity a)	Since: base-4.9.0.0
Instance details Defined in Data.Functor.Identity Methods succ :: Identity a -> Identity a # pred :: Identity a -> Identity a # toEnum :: Int -> Identity a # fromEnum :: Identity a -> Int # enumFrom :: Identity a -> [Identity a] # enumFromThen :: Identity a -> Identity a -> [Identity a] # enumFromTo :: Identity a -> Identity a -> [Identity a] # enumFromThenTo :: Identity a -> Identity a -> Identity a -> [Identity a] #
Enum a => Enum (Down a)	Since: base-4.14.0.0
Instance details Defined in Data.Ord Methods succ :: Down a -> Down a # pred :: Down a -> Down a # toEnum :: Int -> Down a # fromEnum :: Down a -> Int # enumFrom :: Down a -> [Down a] # enumFromThen :: Down a -> Down a -> [Down a] # enumFromTo :: Down a -> Down a -> [Down a] # enumFromThenTo :: Down a -> Down a -> Down a -> [Down a] #
Enum (Offset ty)
Instance details Defined in Basement.Types.OffsetSize Methods succ :: Offset ty -> Offset ty # pred :: Offset ty -> Offset ty # toEnum :: Int -> Offset ty # fromEnum :: Offset ty -> Int # enumFrom :: Offset ty -> [Offset ty] # enumFromThen :: Offset ty -> Offset ty -> [Offset ty] # enumFromTo :: Offset ty -> Offset ty -> [Offset ty] # enumFromThenTo :: Offset ty -> Offset ty -> Offset ty -> [Offset ty] #
Enum (CountOf ty)
Instance details Defined in Basement.Types.OffsetSize Methods succ :: CountOf ty -> CountOf ty # pred :: CountOf ty -> CountOf ty # toEnum :: Int -> CountOf ty # fromEnum :: CountOf ty -> Int # enumFrom :: CountOf ty -> [CountOf ty] # enumFromThen :: CountOf ty -> CountOf ty -> [CountOf ty] # enumFromTo :: CountOf ty -> CountOf ty -> [CountOf ty] # enumFromThenTo :: CountOf ty -> CountOf ty -> CountOf ty -> [CountOf ty] #
Enum (Fixed a)	Since: base-2.1
Instance details Defined in Data.Fixed Methods succ :: Fixed a -> Fixed a # pred :: Fixed a -> Fixed a # toEnum :: Int -> Fixed a # fromEnum :: Fixed a -> Int # enumFrom :: Fixed a -> [Fixed a] # enumFromThen :: Fixed a -> Fixed a -> [Fixed a] # enumFromTo :: Fixed a -> Fixed a -> [Fixed a] # enumFromThenTo :: Fixed a -> Fixed a -> Fixed a -> [Fixed a] #
Enum (Proxy s)	Since: base-4.7.0.0
Instance details Defined in Data.Proxy Methods succ :: Proxy s -> Proxy s # pred :: Proxy s -> Proxy s # toEnum :: Int -> Proxy s # fromEnum :: Proxy s -> Int # enumFrom :: Proxy s -> [Proxy s] # enumFromThen :: Proxy s -> Proxy s -> [Proxy s] # enumFromTo :: Proxy s -> Proxy s -> [Proxy s] # enumFromThenTo :: Proxy s -> Proxy s -> Proxy s -> [Proxy s] #
Enum a => Enum (Const a b)	Since: base-4.9.0.0
Instance details Defined in Data.Functor.Const Methods succ :: Const a b -> Const a b # pred :: Const a b -> Const a b # toEnum :: Int -> Const a b # fromEnum :: Const a b -> Int # enumFrom :: Const a b -> [Const a b] # enumFromThen :: Const a b -> Const a b -> [Const a b] # enumFromTo :: Const a b -> Const a b -> [Const a b] # enumFromThenTo :: Const a b -> Const a b -> Const a b -> [Const a b] #
Enum (f a) => Enum (Ap f a)	Since: base-4.12.0.0
Instance details Defined in Data.Monoid Methods succ :: Ap f a -> Ap f a # pred :: Ap f a -> Ap f a # toEnum :: Int -> Ap f a # fromEnum :: Ap f a -> Int # enumFrom :: Ap f a -> [Ap f a] # enumFromThen :: Ap f a -> Ap f a -> [Ap f a] # enumFromTo :: Ap f a -> Ap f a -> [Ap f a] # enumFromThenTo :: Ap f a -> Ap f a -> Ap f a -> [Ap f a] #
Enum (f a) => Enum (Alt f a)	Since: base-4.8.0.0
Instance details Defined in Data.Semigroup.Internal Methods succ :: Alt f a -> Alt f a # pred :: Alt f a -> Alt f a # toEnum :: Int -> Alt f a # fromEnum :: Alt f a -> Int # enumFrom :: Alt f a -> [Alt f a] # enumFromThen :: Alt f a -> Alt f a -> [Alt f a] # enumFromTo :: Alt f a -> Alt f a -> [Alt f a] # enumFromThenTo :: Alt f a -> Alt f a -> Alt f a -> [Alt f a] #
Enum a => Enum (Tagged s a)
Instance details Defined in Data.Tagged Methods succ :: Tagged s a -> Tagged s a # pred :: Tagged s a -> Tagged s a # toEnum :: Int -> Tagged s a # fromEnum :: Tagged s a -> Int # enumFrom :: Tagged s a -> [Tagged s a] # enumFromThen :: Tagged s a -> Tagged s a -> [Tagged s a] # enumFromTo :: Tagged s a -> Tagged s a -> [Tagged s a] # enumFromThenTo :: Tagged s a -> Tagged s a -> Tagged s a -> [Tagged s a] #

class Eq a where #

The Eq class defines equality (==) and inequality (/=). All the basic datatypes exported by the Prelude are instances of Eq, and Eq may be derived for any datatype whose constituents are also instances of Eq.

The Haskell Report defines no laws for Eq. However, == is customarily expected to implement an equivalence relationship where two values comparing equal are indistinguishable by "public" functions, with a "public" function being one not allowing to see implementation details. For example, for a type representing non-normalised natural numbers modulo 100, a "public" function doesn't make the difference between 1 and 201. It is expected to have the following properties:

Reflexivity: x == x = True
Symmetry: x == y = y == x
Transitivity: if x == y && y == z = True, then x == z = True
Substitutivity: if x == y = True and f is a "public" function whose return type is an instance of Eq, then f x == f y = True
Negation: x /= y = not (x == y)

Minimal complete definition: either == or /=.

Minimal complete definition

(==) | (/=)

Methods

(==) :: a -> a -> Bool infix 4 #

(/=) :: a -> a -> Bool infix 4 #

Instances

Instances details

Eq Bool
Instance details Defined in GHC.Classes Methods (==) :: Bool -> Bool -> Bool # (/=) :: Bool -> Bool -> Bool #
Eq Char
Instance details Defined in GHC.Classes Methods (==) :: Char -> Char -> Bool # (/=) :: Char -> Char -> Bool #
Eq Double	Note that due to the presence of `NaN`, `Double`'s `Eq` instance does not satisfy reflexivity. `>>>` `0/0 == (0/0 :: Double)`False Also note that `Double`'s `Eq` instance does not satisfy substitutivity: `>>>` `0 == (-0 :: Double)`True `>>>` `recip 0 == recip (-0 :: Double)`False
Instance details Defined in GHC.Classes Methods (==) :: Double -> Double -> Bool # (/=) :: Double -> Double -> Bool #
Eq Float	Note that due to the presence of `NaN`, `Float`'s `Eq` instance does not satisfy reflexivity. `>>>` `0/0 == (0/0 :: Float)`False Also note that `Float`'s `Eq` instance does not satisfy substitutivity: `>>>` `0 == (-0 :: Float)`True `>>>` `recip 0 == recip (-0 :: Float)`False
Instance details Defined in GHC.Classes Methods (==) :: Float -> Float -> Bool # (/=) :: Float -> Float -> Bool #
Eq Int
Instance details Defined in GHC.Classes Methods (==) :: Int -> Int -> Bool # (/=) :: Int -> Int -> Bool #
Eq Int8	Since: base-2.1
Instance details Defined in GHC.Int Methods (==) :: Int8 -> Int8 -> Bool # (/=) :: Int8 -> Int8 -> Bool #
Eq Int16	Since: base-2.1
Instance details Defined in GHC.Int Methods (==) :: Int16 -> Int16 -> Bool # (/=) :: Int16 -> Int16 -> Bool #
Eq Int32	Since: base-2.1
Instance details Defined in GHC.Int Methods (==) :: Int32 -> Int32 -> Bool # (/=) :: Int32 -> Int32 -> Bool #
Eq Int64	Since: base-2.1
Instance details Defined in GHC.Int Methods (==) :: Int64 -> Int64 -> Bool # (/=) :: Int64 -> Int64 -> Bool #
Eq Integer
Instance details Defined in GHC.Integer.Type Methods (==) :: Integer -> Integer -> Bool # (/=) :: Integer -> Integer -> Bool #
Eq Natural	Since: base-4.8.0.0
Instance details Defined in GHC.Natural Methods (==) :: Natural -> Natural -> Bool # (/=) :: Natural -> Natural -> Bool #
Eq Ordering
Instance details Defined in GHC.Classes Methods (==) :: Ordering -> Ordering -> Bool # (/=) :: Ordering -> Ordering -> Bool #
Eq Word
Instance details Defined in GHC.Classes Methods (==) :: Word -> Word -> Bool # (/=) :: Word -> Word -> Bool #
Eq Word8	Since: base-2.1
Instance details Defined in GHC.Word Methods (==) :: Word8 -> Word8 -> Bool # (/=) :: Word8 -> Word8 -> Bool #
Eq Word16	Since: base-2.1
Instance details Defined in GHC.Word Methods (==) :: Word16 -> Word16 -> Bool # (/=) :: Word16 -> Word16 -> Bool #
Eq Word32	Since: base-2.1
Instance details Defined in GHC.Word Methods (==) :: Word32 -> Word32 -> Bool # (/=) :: Word32 -> Word32 -> Bool #
Eq Word64	Since: base-2.1
Instance details Defined in GHC.Word Methods (==) :: Word64 -> Word64 -> Bool # (/=) :: Word64 -> Word64 -> Bool #
Eq SomeTypeRep
Instance details Defined in Data.Typeable.Internal Methods (==) :: SomeTypeRep -> SomeTypeRep -> Bool # (/=) :: SomeTypeRep -> SomeTypeRep -> Bool #
Eq Exp
Instance details Defined in Language.Haskell.TH.Syntax Methods (==) :: Exp -> Exp -> Bool # (/=) :: Exp -> Exp -> Bool #
Eq Match
Instance details Defined in Language.Haskell.TH.Syntax Methods (==) :: Match -> Match -> Bool # (/=) :: Match -> Match -> Bool #
Eq Clause
Instance details Defined in Language.Haskell.TH.Syntax Methods (==) :: Clause -> Clause -> Bool # (/=) :: Clause -> Clause -> Bool #
Eq Pat
Instance details Defined in Language.Haskell.TH.Syntax Methods (==) :: Pat -> Pat -> Bool # (/=) :: Pat -> Pat -> Bool #
Eq Type
Instance details Defined in Language.Haskell.TH.Syntax Methods (==) :: Type -> Type -> Bool # (/=) :: Type -> Type -> Bool #
Eq Dec
Instance details Defined in Language.Haskell.TH.Syntax Methods (==) :: Dec -> Dec -> Bool # (/=) :: Dec -> Dec -> Bool #
Eq Name
Instance details Defined in Language.Haskell.TH.Syntax Methods (==) :: Name -> Name -> Bool # (/=) :: Name -> Name -> Bool #
Eq FunDep
Instance details Defined in Language.Haskell.TH.Syntax Methods (==) :: FunDep -> FunDep -> Bool # (/=) :: FunDep -> FunDep -> Bool #
Eq InjectivityAnn
Instance details Defined in Language.Haskell.TH.Syntax Methods (==) :: InjectivityAnn -> InjectivityAnn -> Bool # (/=) :: InjectivityAnn -> InjectivityAnn -> Bool #
Eq Overlap
Instance details Defined in Language.Haskell.TH.Syntax Methods (==) :: Overlap -> Overlap -> Bool # (/=) :: Overlap -> Overlap -> Bool #
Eq ()
Instance details Defined in GHC.Classes Methods (==) :: () -> () -> Bool # (/=) :: () -> () -> Bool #
Eq TyCon
Instance details Defined in GHC.Classes Methods (==) :: TyCon -> TyCon -> Bool # (/=) :: TyCon -> TyCon -> Bool #
Eq Module
Instance details Defined in GHC.Classes Methods (==) :: Module -> Module -> Bool # (/=) :: Module -> Module -> Bool #
Eq TrName
Instance details Defined in GHC.Classes Methods (==) :: TrName -> TrName -> Bool # (/=) :: TrName -> TrName -> Bool #
Eq Version	Since: base-2.1
Instance details Defined in Data.Version Methods (==) :: Version -> Version -> Bool # (/=) :: Version -> Version -> Bool #
Eq StdGen
Instance details Defined in System.Random.Internal Methods (==) :: StdGen -> StdGen -> Bool # (/=) :: StdGen -> StdGen -> Bool #
Eq ByteString
Instance details Defined in Data.ByteString.Internal Methods (==) :: ByteString -> ByteString -> Bool # (/=) :: ByteString -> ByteString -> Bool #
Eq ByteString
Instance details Defined in Data.ByteString.Lazy.Internal Methods (==) :: ByteString -> ByteString -> Bool # (/=) :: ByteString -> ByteString -> Bool #
Eq Builder
Instance details Defined in Data.Text.Internal.Builder Methods (==) :: Builder -> Builder -> Bool # (/=) :: Builder -> Builder -> Bool #
Eq Scientific	Scientific numbers can be safely compared for equality. No magnitude `10^e` is calculated so there's no risk of a blowup in space or time when comparing scientific numbers coming from untrusted sources.
Instance details Defined in Data.Scientific Methods (==) :: Scientific -> Scientific -> Bool # (/=) :: Scientific -> Scientific -> Bool #
Eq UTCTime
Instance details Defined in Data.Time.Clock.Internal.UTCTime Methods (==) :: UTCTime -> UTCTime -> Bool # (/=) :: UTCTime -> UTCTime -> Bool #
Eq JSONPathElement
Instance details Defined in Data.Aeson.Types.Internal Methods (==) :: JSONPathElement -> JSONPathElement -> Bool # (/=) :: JSONPathElement -> JSONPathElement -> Bool #
Eq Value
Instance details Defined in Data.Aeson.Types.Internal Methods (==) :: Value -> Value -> Bool # (/=) :: Value -> Value -> Bool #
Eq DotNetTime
Instance details Defined in Data.Aeson.Types.Internal Methods (==) :: DotNetTime -> DotNetTime -> Bool # (/=) :: DotNetTime -> DotNetTime -> Bool #
Eq SumEncoding
Instance details Defined in Data.Aeson.Types.Internal Methods (==) :: SumEncoding -> SumEncoding -> Bool # (/=) :: SumEncoding -> SumEncoding -> Bool #
Eq Handle	Since: base-4.1.0.0
Instance details Defined in GHC.IO.Handle.Types Methods (==) :: Handle -> Handle -> Bool # (/=) :: Handle -> Handle -> Bool #
Eq Pos
Instance details Defined in Data.Attoparsec.Internal.Types Methods (==) :: Pos -> Pos -> Bool # (/=) :: Pos -> Pos -> Bool #
Eq More
Instance details Defined in Data.Attoparsec.Internal.Types Methods (==) :: More -> More -> Bool # (/=) :: More -> More -> Bool #
Eq Void	Since: base-4.8.0.0
Instance details Defined in Data.Void Methods (==) :: Void -> Void -> Bool # (/=) :: Void -> Void -> Bool #
Eq SpecConstrAnnotation	Since: base-4.3.0.0
Instance details Defined in GHC.Exts Methods (==) :: SpecConstrAnnotation -> SpecConstrAnnotation -> Bool # (/=) :: SpecConstrAnnotation -> SpecConstrAnnotation -> Bool #
Eq HandlePosn	Since: base-4.1.0.0
Instance details Defined in GHC.IO.Handle Methods (==) :: HandlePosn -> HandlePosn -> Bool # (/=) :: HandlePosn -> HandlePosn -> Bool #
Eq AsyncException	Since: base-4.2.0.0
Instance details Defined in GHC.IO.Exception Methods (==) :: AsyncException -> AsyncException -> Bool # (/=) :: AsyncException -> AsyncException -> Bool #
Eq ArrayException	Since: base-4.2.0.0
Instance details Defined in GHC.IO.Exception Methods (==) :: ArrayException -> ArrayException -> Bool # (/=) :: ArrayException -> ArrayException -> Bool #
Eq ExitCode
Instance details Defined in GHC.IO.Exception Methods (==) :: ExitCode -> ExitCode -> Bool # (/=) :: ExitCode -> ExitCode -> Bool #
Eq IOErrorType	Since: base-4.1.0.0
Instance details Defined in GHC.IO.Exception Methods (==) :: IOErrorType -> IOErrorType -> Bool # (/=) :: IOErrorType -> IOErrorType -> Bool #
Eq BufferMode	Since: base-4.2.0.0
Instance details Defined in GHC.IO.Handle.Types Methods (==) :: BufferMode -> BufferMode -> Bool # (/=) :: BufferMode -> BufferMode -> Bool #
Eq Newline	Since: base-4.2.0.0
Instance details Defined in GHC.IO.Handle.Types Methods (==) :: Newline -> Newline -> Bool # (/=) :: Newline -> Newline -> Bool #
Eq NewlineMode	Since: base-4.2.0.0
Instance details Defined in GHC.IO.Handle.Types Methods (==) :: NewlineMode -> NewlineMode -> Bool # (/=) :: NewlineMode -> NewlineMode -> Bool #
Eq MaskingState	Since: base-4.3.0.0
Instance details Defined in GHC.IO Methods (==) :: MaskingState -> MaskingState -> Bool # (/=) :: MaskingState -> MaskingState -> Bool #
Eq IOException	Since: base-4.1.0.0
Instance details Defined in GHC.IO.Exception Methods (==) :: IOException -> IOException -> Bool # (/=) :: IOException -> IOException -> Bool #
Eq ArithException	Since: base-3.0
Instance details Defined in GHC.Exception.Type Methods (==) :: ArithException -> ArithException -> Bool # (/=) :: ArithException -> ArithException -> Bool #
Eq All	Since: base-2.1
Instance details Defined in Data.Semigroup.Internal Methods (==) :: All -> All -> Bool # (/=) :: All -> All -> Bool #
Eq Any	Since: base-2.1
Instance details Defined in Data.Semigroup.Internal Methods (==) :: Any -> Any -> Bool # (/=) :: Any -> Any -> Bool #
Eq Fixity	Since: base-4.6.0.0
Instance details Defined in GHC.Generics Methods (==) :: Fixity -> Fixity -> Bool # (/=) :: Fixity -> Fixity -> Bool #
Eq Associativity	Since: base-4.6.0.0
Instance details Defined in GHC.Generics Methods (==) :: Associativity -> Associativity -> Bool # (/=) :: Associativity -> Associativity -> Bool #
Eq SourceUnpackedness	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Methods (==) :: SourceUnpackedness -> SourceUnpackedness -> Bool # (/=) :: SourceUnpackedness -> SourceUnpackedness -> Bool #
Eq SourceStrictness	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Methods (==) :: SourceStrictness -> SourceStrictness -> Bool # (/=) :: SourceStrictness -> SourceStrictness -> Bool #
Eq DecidedStrictness	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Methods (==) :: DecidedStrictness -> DecidedStrictness -> Bool # (/=) :: DecidedStrictness -> DecidedStrictness -> Bool #
Eq SomeSymbol	Since: base-4.7.0.0
Instance details Defined in GHC.TypeLits Methods (==) :: SomeSymbol -> SomeSymbol -> Bool # (/=) :: SomeSymbol -> SomeSymbol -> Bool #
Eq SomeNat	Since: base-4.7.0.0
Instance details Defined in GHC.TypeNats Methods (==) :: SomeNat -> SomeNat -> Bool # (/=) :: SomeNat -> SomeNat -> Bool #
Eq CChar
Instance details Defined in Foreign.C.Types Methods (==) :: CChar -> CChar -> Bool # (/=) :: CChar -> CChar -> Bool #
Eq CSChar
Instance details Defined in Foreign.C.Types Methods (==) :: CSChar -> CSChar -> Bool # (/=) :: CSChar -> CSChar -> Bool #
Eq CUChar
Instance details Defined in Foreign.C.Types Methods (==) :: CUChar -> CUChar -> Bool # (/=) :: CUChar -> CUChar -> Bool #
Eq CShort
Instance details Defined in Foreign.C.Types Methods (==) :: CShort -> CShort -> Bool # (/=) :: CShort -> CShort -> Bool #
Eq CUShort
Instance details Defined in Foreign.C.Types Methods (==) :: CUShort -> CUShort -> Bool # (/=) :: CUShort -> CUShort -> Bool #
Eq CInt
Instance details Defined in Foreign.C.Types Methods (==) :: CInt -> CInt -> Bool # (/=) :: CInt -> CInt -> Bool #
Eq CUInt
Instance details Defined in Foreign.C.Types Methods (==) :: CUInt -> CUInt -> Bool # (/=) :: CUInt -> CUInt -> Bool #
Eq CLong
Instance details Defined in Foreign.C.Types Methods (==) :: CLong -> CLong -> Bool # (/=) :: CLong -> CLong -> Bool #
Eq CULong
Instance details Defined in Foreign.C.Types Methods (==) :: CULong -> CULong -> Bool # (/=) :: CULong -> CULong -> Bool #
Eq CLLong
Instance details Defined in Foreign.C.Types Methods (==) :: CLLong -> CLLong -> Bool # (/=) :: CLLong -> CLLong -> Bool #
Eq CULLong
Instance details Defined in Foreign.C.Types Methods (==) :: CULLong -> CULLong -> Bool # (/=) :: CULLong -> CULLong -> Bool #
Eq CBool
Instance details Defined in Foreign.C.Types Methods (==) :: CBool -> CBool -> Bool # (/=) :: CBool -> CBool -> Bool #
Eq CFloat
Instance details Defined in Foreign.C.Types Methods (==) :: CFloat -> CFloat -> Bool # (/=) :: CFloat -> CFloat -> Bool #
Eq CDouble
Instance details Defined in Foreign.C.Types Methods (==) :: CDouble -> CDouble -> Bool # (/=) :: CDouble -> CDouble -> Bool #
Eq CPtrdiff
Instance details Defined in Foreign.C.Types Methods (==) :: CPtrdiff -> CPtrdiff -> Bool # (/=) :: CPtrdiff -> CPtrdiff -> Bool #
Eq CSize
Instance details Defined in Foreign.C.Types Methods (==) :: CSize -> CSize -> Bool # (/=) :: CSize -> CSize -> Bool #
Eq CWchar
Instance details Defined in Foreign.C.Types Methods (==) :: CWchar -> CWchar -> Bool # (/=) :: CWchar -> CWchar -> Bool #
Eq CSigAtomic
Instance details Defined in Foreign.C.Types Methods (==) :: CSigAtomic -> CSigAtomic -> Bool # (/=) :: CSigAtomic -> CSigAtomic -> Bool #
Eq CClock
Instance details Defined in Foreign.C.Types Methods (==) :: CClock -> CClock -> Bool # (/=) :: CClock -> CClock -> Bool #
Eq CTime
Instance details Defined in Foreign.C.Types Methods (==) :: CTime -> CTime -> Bool # (/=) :: CTime -> CTime -> Bool #
Eq CUSeconds
Instance details Defined in Foreign.C.Types Methods (==) :: CUSeconds -> CUSeconds -> Bool # (/=) :: CUSeconds -> CUSeconds -> Bool #
Eq CSUSeconds
Instance details Defined in Foreign.C.Types Methods (==) :: CSUSeconds -> CSUSeconds -> Bool # (/=) :: CSUSeconds -> CSUSeconds -> Bool #
Eq CIntPtr
Instance details Defined in Foreign.C.Types Methods (==) :: CIntPtr -> CIntPtr -> Bool # (/=) :: CIntPtr -> CIntPtr -> Bool #
Eq CUIntPtr
Instance details Defined in Foreign.C.Types Methods (==) :: CUIntPtr -> CUIntPtr -> Bool # (/=) :: CUIntPtr -> CUIntPtr -> Bool #
Eq CIntMax
Instance details Defined in Foreign.C.Types Methods (==) :: CIntMax -> CIntMax -> Bool # (/=) :: CIntMax -> CIntMax -> Bool #
Eq CUIntMax
Instance details Defined in Foreign.C.Types Methods (==) :: CUIntMax -> CUIntMax -> Bool # (/=) :: CUIntMax -> CUIntMax -> Bool #
Eq Lexeme	Since: base-2.1
Instance details Defined in Text.Read.Lex Methods (==) :: Lexeme -> Lexeme -> Bool # (/=) :: Lexeme -> Lexeme -> Bool #
Eq Number	Since: base-4.6.0.0
Instance details Defined in Text.Read.Lex Methods (==) :: Number -> Number -> Bool # (/=) :: Number -> Number -> Bool #
Eq SrcLoc	Since: base-4.9.0.0
Instance details Defined in GHC.Stack.Types Methods (==) :: SrcLoc -> SrcLoc -> Bool # (/=) :: SrcLoc -> SrcLoc -> Bool #
Eq ShortText
Instance details Defined in Data.Text.Short.Internal Methods (==) :: ShortText -> ShortText -> Bool # (/=) :: ShortText -> ShortText -> Bool #
Eq ASCII7_Invalid
Instance details Defined in Basement.String.Encoding.ASCII7 Methods (==) :: ASCII7_Invalid -> ASCII7_Invalid -> Bool # (/=) :: ASCII7_Invalid -> ASCII7_Invalid -> Bool #
Eq ISO_8859_1_Invalid
Instance details Defined in Basement.String.Encoding.ISO_8859_1 Methods (==) :: ISO_8859_1_Invalid -> ISO_8859_1_Invalid -> Bool # (/=) :: ISO_8859_1_Invalid -> ISO_8859_1_Invalid -> Bool #
Eq UTF16_Invalid
Instance details Defined in Basement.String.Encoding.UTF16 Methods (==) :: UTF16_Invalid -> UTF16_Invalid -> Bool # (/=) :: UTF16_Invalid -> UTF16_Invalid -> Bool #
Eq UTF32_Invalid
Instance details Defined in Basement.String.Encoding.UTF32 Methods (==) :: UTF32_Invalid -> UTF32_Invalid -> Bool # (/=) :: UTF32_Invalid -> UTF32_Invalid -> Bool #
Eq Encoding
Instance details Defined in Basement.String Methods (==) :: Encoding -> Encoding -> Bool # (/=) :: Encoding -> Encoding -> Bool #
Eq String
Instance details Defined in Basement.UTF8.Base Methods (==) :: String -> String -> Bool # (/=) :: String -> String -> Bool #
Eq FileSize
Instance details Defined in Basement.Types.OffsetSize Methods (==) :: FileSize -> FileSize -> Bool # (/=) :: FileSize -> FileSize -> Bool #
Eq Key
Instance details Defined in Web.ClientSession Methods (==) :: Key -> Key -> Bool # (/=) :: Key -> Key -> Bool #
Eq IV
Instance details Defined in Web.ClientSession Methods (==) :: IV -> IV -> Bool # (/=) :: IV -> IV -> Bool #
Eq Clock
Instance details Defined in System.Clock Methods (==) :: Clock -> Clock -> Bool # (/=) :: Clock -> Clock -> Bool #
Eq TimeSpec
Instance details Defined in System.Clock Methods (==) :: TimeSpec -> TimeSpec -> Bool # (/=) :: TimeSpec -> TimeSpec -> Bool #
Eq HelpFormat
Instance details Defined in System.Console.CmdArgs.Explicit.Help Methods (==) :: HelpFormat -> HelpFormat -> Bool # (/=) :: HelpFormat -> HelpFormat -> Bool #
Eq Complete
Instance details Defined in System.Console.CmdArgs.Explicit.Complete Methods (==) :: Complete -> Complete -> Bool # (/=) :: Complete -> Complete -> Bool #
Eq FlagInfo
Instance details Defined in System.Console.CmdArgs.Explicit.Type Methods (==) :: FlagInfo -> FlagInfo -> Bool # (/=) :: FlagInfo -> FlagInfo -> Bool #
Eq WindowBits
Instance details Defined in Codec.Compression.Zlib.Stream Methods (==) :: WindowBits -> WindowBits -> Bool # (/=) :: WindowBits -> WindowBits -> Bool #
Eq HostPreference
Instance details Defined in Data.Streaming.Network.Internal Methods (==) :: HostPreference -> HostPreference -> Bool # (/=) :: HostPreference -> HostPreference -> Bool #
Eq IntSet
Instance details Defined in Data.IntSet.Internal Methods (==) :: IntSet -> IntSet -> Bool # (/=) :: IntSet -> IntSet -> Bool #
Eq SetCookie
Instance details Defined in Web.Cookie Methods (==) :: SetCookie -> SetCookie -> Bool # (/=) :: SetCookie -> SetCookie -> Bool #
Eq SameSiteOption
Instance details Defined in Web.Cookie Methods (==) :: SameSiteOption -> SameSiteOption -> Bool # (/=) :: SameSiteOption -> SameSiteOption -> Bool #
Eq SharedSecret
Instance details Defined in Crypto.ECC Methods (==) :: SharedSecret -> SharedSecret -> Bool # (/=) :: SharedSecret -> SharedSecret -> Bool #
Eq CryptoError
Instance details Defined in Crypto.Error.Types Methods (==) :: CryptoError -> CryptoError -> Bool # (/=) :: CryptoError -> CryptoError -> Bool #
Eq FileType
Instance details Defined in System.Directory.Internal.Common Methods (==) :: FileType -> FileType -> Bool # (/=) :: FileType -> FileType -> Bool #
Eq Permissions
Instance details Defined in System.Directory.Internal.Common Methods (==) :: Permissions -> Permissions -> Bool # (/=) :: Permissions -> Permissions -> Bool #
Eq XdgDirectory
Instance details Defined in System.Directory.Internal.Common Methods (==) :: XdgDirectory -> XdgDirectory -> Bool # (/=) :: XdgDirectory -> XdgDirectory -> Bool #
Eq XdgDirectoryList
Instance details Defined in System.Directory.Internal.Common Methods (==) :: XdgDirectoryList -> XdgDirectoryList -> Bool # (/=) :: XdgDirectoryList -> XdgDirectoryList -> Bool #
Eq EmailAddress
Instance details Defined in Text.Email.Parser Methods (==) :: EmailAddress -> EmailAddress -> Bool # (/=) :: EmailAddress -> EmailAddress -> Bool #
Eq LogStr
Instance details Defined in System.Log.FastLogger.LogStr Methods (==) :: LogStr -> LogStr -> Bool # (/=) :: LogStr -> LogStr -> Bool #
Eq Extension
Instance details Defined in GHC.LanguageExtensions.Type Methods (==) :: Extension -> Extension -> Bool # (/=) :: Extension -> Extension -> Bool #
Eq ForeignSrcLang
Instance details Defined in GHC.ForeignSrcLang.Type Methods (==) :: ForeignSrcLang -> ForeignSrcLang -> Bool # (/=) :: ForeignSrcLang -> ForeignSrcLang -> Bool #
Eq SourcePos
Instance details Defined in Text.Megaparsec.Pos Methods (==) :: SourcePos -> SourcePos -> Bool # (/=) :: SourcePos -> SourcePos -> Bool #
Eq DependencyType
Instance details Defined in Test.Tasty.Core Methods (==) :: DependencyType -> DependencyType -> Bool # (/=) :: DependencyType -> DependencyType -> Bool #
Eq Regexp
Instance details Defined in Hledger.Utils.Regex Methods (==) :: Regexp -> Regexp -> Bool # (/=) :: Regexp -> Regexp -> Bool #
Eq NormalSign
Instance details Defined in Hledger.Data.Types Methods (==) :: NormalSign -> NormalSign -> Bool # (/=) :: NormalSign -> NormalSign -> Bool #
Eq AccountDeclarationInfo
Instance details Defined in Hledger.Data.Types Methods (==) :: AccountDeclarationInfo -> AccountDeclarationInfo -> Bool # (/=) :: AccountDeclarationInfo -> AccountDeclarationInfo -> Bool #
Eq PayeeDeclarationInfo
Instance details Defined in Hledger.Data.Types Methods (==) :: PayeeDeclarationInfo -> PayeeDeclarationInfo -> Bool # (/=) :: PayeeDeclarationInfo -> PayeeDeclarationInfo -> Bool #
Eq MarketPrice
Instance details Defined in Hledger.Data.Types Methods (==) :: MarketPrice -> MarketPrice -> Bool # (/=) :: MarketPrice -> MarketPrice -> Bool #
Eq PriceDirective
Instance details Defined in Hledger.Data.Types Methods (==) :: PriceDirective -> PriceDirective -> Bool # (/=) :: PriceDirective -> PriceDirective -> Bool #
Eq TimeclockEntry
Instance details Defined in Hledger.Data.Types Methods (==) :: TimeclockEntry -> TimeclockEntry -> Bool # (/=) :: TimeclockEntry -> TimeclockEntry -> Bool #
Eq TimeclockCode
Instance details Defined in Hledger.Data.Types Methods (==) :: TimeclockCode -> TimeclockCode -> Bool # (/=) :: TimeclockCode -> TimeclockCode -> Bool #
Eq PeriodicTransaction
Instance details Defined in Hledger.Data.Types Methods (==) :: PeriodicTransaction -> PeriodicTransaction -> Bool # (/=) :: PeriodicTransaction -> PeriodicTransaction -> Bool #
Eq TMPostingRule
Instance details Defined in Hledger.Data.Types Methods (==) :: TMPostingRule -> TMPostingRule -> Bool # (/=) :: TMPostingRule -> TMPostingRule -> Bool #
Eq TransactionModifier
Instance details Defined in Hledger.Data.Types Methods (==) :: TransactionModifier -> TransactionModifier -> Bool # (/=) :: TransactionModifier -> TransactionModifier -> Bool #
Eq Transaction
Instance details Defined in Hledger.Data.Types Methods (==) :: Transaction -> Transaction -> Bool # (/=) :: Transaction -> Transaction -> Bool #
Eq Posting
Instance details Defined in Hledger.Data.Types Methods (==) :: Posting -> Posting -> Bool # (/=) :: Posting -> Posting -> Bool #
Eq BalanceAssertion
Instance details Defined in Hledger.Data.Types Methods (==) :: BalanceAssertion -> BalanceAssertion -> Bool # (/=) :: BalanceAssertion -> BalanceAssertion -> Bool #
Eq Status
Instance details Defined in Hledger.Data.Types Methods (==) :: Status -> Status -> Bool # (/=) :: Status -> Status -> Bool #
Eq PostingType
Instance details Defined in Hledger.Data.Types Methods (==) :: PostingType -> PostingType -> Bool # (/=) :: PostingType -> PostingType -> Bool #
Eq MixedAmount
Instance details Defined in Hledger.Data.Types Methods (==) :: MixedAmount -> MixedAmount -> Bool # (/=) :: MixedAmount -> MixedAmount -> Bool #
Eq Amount
Instance details Defined in Hledger.Data.Types Methods (==) :: Amount -> Amount -> Bool # (/=) :: Amount -> Amount -> Bool #
Eq Commodity
Instance details Defined in Hledger.Data.Types Methods (==) :: Commodity -> Commodity -> Bool # (/=) :: Commodity -> Commodity -> Bool #
Eq DigitGroupStyle
Instance details Defined in Hledger.Data.Types Methods (==) :: DigitGroupStyle -> DigitGroupStyle -> Bool # (/=) :: DigitGroupStyle -> DigitGroupStyle -> Bool #
Eq AmountPrecision
Instance details Defined in Hledger.Data.Types Methods (==) :: AmountPrecision -> AmountPrecision -> Bool # (/=) :: AmountPrecision -> AmountPrecision -> Bool #
Eq AmountStyle
Instance details Defined in Hledger.Data.Types Methods (==) :: AmountStyle -> AmountStyle -> Bool # (/=) :: AmountStyle -> AmountStyle -> Bool #
Eq AmountPrice
Instance details Defined in Hledger.Data.Types Methods (==) :: AmountPrice -> AmountPrice -> Bool # (/=) :: AmountPrice -> AmountPrice -> Bool #
Eq Side
Instance details Defined in Hledger.Data.Types Methods (==) :: Side -> Side -> Bool # (/=) :: Side -> Side -> Bool #
Eq AccountAlias
Instance details Defined in Hledger.Data.Types Methods (==) :: AccountAlias -> AccountAlias -> Bool # (/=) :: AccountAlias -> AccountAlias -> Bool #
Eq AccountType
Instance details Defined in Hledger.Data.Types Methods (==) :: AccountType -> AccountType -> Bool # (/=) :: AccountType -> AccountType -> Bool #
Eq Interval
Instance details Defined in Hledger.Data.Types Methods (==) :: Interval -> Interval -> Bool # (/=) :: Interval -> Interval -> Bool #
Eq Period
Instance details Defined in Hledger.Data.Types Methods (==) :: Period -> Period -> Bool # (/=) :: Period -> Period -> Bool #
Eq DateSpan
Instance details Defined in Hledger.Data.Types Methods (==) :: DateSpan -> DateSpan -> Bool # (/=) :: DateSpan -> DateSpan -> Bool #
Eq WhichDate
Instance details Defined in Hledger.Data.Types Methods (==) :: WhichDate -> WhichDate -> Bool # (/=) :: WhichDate -> WhichDate -> Bool #
Eq CustomErr
Instance details Defined in Text.Megaparsec.Custom Methods (==) :: CustomErr -> CustomErr -> Bool # (/=) :: CustomErr -> CustomErr -> Bool #
Eq ReportItemField
Instance details Defined in Hledger.Data.StringFormat Methods (==) :: ReportItemField -> ReportItemField -> Bool # (/=) :: ReportItemField -> ReportItemField -> Bool #
Eq StringFormatComponent
Instance details Defined in Hledger.Data.StringFormat Methods (==) :: StringFormatComponent -> StringFormatComponent -> Bool # (/=) :: StringFormatComponent -> StringFormatComponent -> Bool #
Eq StringFormat
Instance details Defined in Hledger.Data.StringFormat Methods (==) :: StringFormat -> StringFormat -> Bool # (/=) :: StringFormat -> StringFormat -> Bool #
Eq ValuationType
Instance details Defined in Hledger.Data.Valuation Methods (==) :: ValuationType -> ValuationType -> Bool # (/=) :: ValuationType -> ValuationType -> Bool #
Eq Costing
Instance details Defined in Hledger.Data.Valuation Methods (==) :: Costing -> Costing -> Bool # (/=) :: Costing -> Costing -> Bool #
Eq QueryOpt
Instance details Defined in Hledger.Query Methods (==) :: QueryOpt -> QueryOpt -> Bool # (/=) :: QueryOpt -> QueryOpt -> Bool #
Eq OrdPlus
Instance details Defined in Hledger.Query Methods (==) :: OrdPlus -> OrdPlus -> Bool # (/=) :: OrdPlus -> OrdPlus -> Bool #
Eq Query
Instance details Defined in Hledger.Query Methods (==) :: Query -> Query -> Bool # (/=) :: Query -> Query -> Bool #
Eq CommodityLayout
Instance details Defined in Hledger.Reports.ReportOptions Methods (==) :: CommodityLayout -> CommodityLayout -> Bool # (/=) :: CommodityLayout -> CommodityLayout -> Bool #
Eq AccountListMode
Instance details Defined in Hledger.Reports.ReportOptions Methods (==) :: AccountListMode -> AccountListMode -> Bool # (/=) :: AccountListMode -> AccountListMode -> Bool #
Eq BalanceAccumulation
Instance details Defined in Hledger.Reports.ReportOptions Methods (==) :: BalanceAccumulation -> BalanceAccumulation -> Bool # (/=) :: BalanceAccumulation -> BalanceAccumulation -> Bool #
Eq BalanceCalculation
Instance details Defined in Hledger.Reports.ReportOptions Methods (==) :: BalanceCalculation -> BalanceCalculation -> Bool # (/=) :: BalanceCalculation -> BalanceCalculation -> Bool #
Eq DisplayName
Instance details Defined in Hledger.Reports.ReportTypes Methods (==) :: DisplayName -> DisplayName -> Bool # (/=) :: DisplayName -> DisplayName -> Bool #
Eq HUnitFailure
Instance details Defined in Test.Tasty.HUnit.Orig Methods (==) :: HUnitFailure -> HUnitFailure -> Bool # (/=) :: HUnitFailure -> HUnitFailure -> Bool #
Eq Journal
Instance details Defined in Hledger.Data.Types Methods (==) :: Journal -> Journal -> Bool # (/=) :: Journal -> Journal -> Bool #
Eq MixedAmountKey
Instance details Defined in Hledger.Data.Types Methods (==) :: MixedAmountKey -> MixedAmountKey -> Bool # (/=) :: MixedAmountKey -> MixedAmountKey -> Bool #
Eq Summary
Instance details Defined in Test.Hspec.Core.Runner Methods (==) :: Summary -> Summary -> Bool # (/=) :: Summary -> Summary -> Bool #
Eq URI
Instance details Defined in Network.URI Methods (==) :: URI -> URI -> Bool # (/=) :: URI -> URI -> Bool #
Eq Socket
Instance details Defined in Network.Socket.Types Methods (==) :: Socket -> Socket -> Bool # (/=) :: Socket -> Socket -> Bool #
Eq StatusHeaders
Instance details Defined in Network.HTTP.Client.Types Methods (==) :: StatusHeaders -> StatusHeaders -> Bool # (/=) :: StatusHeaders -> StatusHeaders -> Bool #
Eq Proxy
Instance details Defined in Network.HTTP.Client.Types Methods (==) :: Proxy -> Proxy -> Bool # (/=) :: Proxy -> Proxy -> Bool #
Eq ProxySecureMode
Instance details Defined in Network.HTTP.Client.Types Methods (==) :: ProxySecureMode -> ProxySecureMode -> Bool # (/=) :: ProxySecureMode -> ProxySecureMode -> Bool #
Eq ResponseTimeout
Instance details Defined in Network.HTTP.Client.Types Methods (==) :: ResponseTimeout -> ResponseTimeout -> Bool # (/=) :: ResponseTimeout -> ResponseTimeout -> Bool #
Eq ConnHost
Instance details Defined in Network.HTTP.Client.Types Methods (==) :: ConnHost -> ConnHost -> Bool # (/=) :: ConnHost -> ConnHost -> Bool #
Eq ConnKey
Instance details Defined in Network.HTTP.Client.Types Methods (==) :: ConnKey -> ConnKey -> Bool # (/=) :: ConnKey -> ConnKey -> Bool #
Eq StreamFileStatus
Instance details Defined in Network.HTTP.Client.Types Methods (==) :: StreamFileStatus -> StreamFileStatus -> Bool # (/=) :: StreamFileStatus -> StreamFileStatus -> Bool #
Eq HttpVersion
Instance details Defined in Network.HTTP.Types.Version Methods (==) :: HttpVersion -> HttpVersion -> Bool # (/=) :: HttpVersion -> HttpVersion -> Bool #
Eq EscapeItem
Instance details Defined in Network.HTTP.Types.URI Methods (==) :: EscapeItem -> EscapeItem -> Bool # (/=) :: EscapeItem -> EscapeItem -> Bool #
Eq Status
Instance details Defined in Network.HTTP.Types.Status Methods (==) :: Status -> Status -> Bool # (/=) :: Status -> Status -> Bool #
Eq StdMethod
Instance details Defined in Network.HTTP.Types.Method Methods (==) :: StdMethod -> StdMethod -> Bool # (/=) :: StdMethod -> StdMethod -> Bool #
Eq ByteRange
Instance details Defined in Network.HTTP.Types.Header Methods (==) :: ByteRange -> ByteRange -> Bool # (/=) :: ByteRange -> ByteRange -> Bool #
Eq BigNat
Instance details Defined in GHC.Integer.Type Methods (==) :: BigNat -> BigNat -> Bool # (/=) :: BigNat -> BigNat -> Bool #
Eq SockAddr
Instance details Defined in Network.Socket.Types Methods (==) :: SockAddr -> SockAddr -> Bool # (/=) :: SockAddr -> SockAddr -> Bool #
Eq IPRange
Instance details Defined in Data.IP.Range Methods (==) :: IPRange -> IPRange -> Bool # (/=) :: IPRange -> IPRange -> Bool #
Eq IP	Equality over IP addresses. Correctly compare IPv4 and IPv4-embedded-in-IPv6 addresses. `>>>` `(read "2001:db8:00:00:00:00:00:01" :: IP) == (read "2001:db8:00:00:00:00:00:01" :: IP)`True `>>>` `(read "2001:db8:00:00:00:00:00:01" :: IP) == (read "2001:db8:00:00:00:00:00:05" :: IP)`False `>>>` `(read "127.0.0.1" :: IP) == (read "127.0.0.1" :: IP)`True `>>>` `(read "127.0.0.1" :: IP) == (read "10.0.0.1" :: IP)`False `>>>` `(read "::ffff:127.0.0.1" :: IP) == (read "127.0.0.1" :: IP)`True `>>>` `(read "::ffff:127.0.0.1" :: IP) == (read "127.0.0.9" :: IP)`False `>>>` `(read "::ffff:127.0.0.1" :: IP) >= (read "127.0.0.1" :: IP)`True `>>>` `(read "::ffff:127.0.0.1" :: IP) <= (read "127.0.0.1" :: IP)`True
Instance details Defined in Data.IP.Addr Methods (==) :: IP -> IP -> Bool # (/=) :: IP -> IP -> Bool #
Eq IPv4
Instance details Defined in Data.IP.Addr Methods (==) :: IPv4 -> IPv4 -> Bool # (/=) :: IPv4 -> IPv4 -> Bool #
Eq IPv6
Instance details Defined in Data.IP.Addr Methods (==) :: IPv6 -> IPv6 -> Bool # (/=) :: IPv6 -> IPv6 -> Bool #
Eq Event
Instance details Defined in Text.Libyaml Methods (==) :: Event -> Event -> Bool # (/=) :: Event -> Event -> Bool #
Eq Style
Instance details Defined in Text.Libyaml Methods (==) :: Style -> Style -> Bool # (/=) :: Style -> Style -> Bool #
Eq SequenceStyle
Instance details Defined in Text.Libyaml Methods (==) :: SequenceStyle -> SequenceStyle -> Bool # (/=) :: SequenceStyle -> SequenceStyle -> Bool #
Eq MappingStyle
Instance details Defined in Text.Libyaml Methods (==) :: MappingStyle -> MappingStyle -> Bool # (/=) :: MappingStyle -> MappingStyle -> Bool #
Eq Tag
Instance details Defined in Text.Libyaml Methods (==) :: Tag -> Tag -> Bool # (/=) :: Tag -> Tag -> Bool #
Eq Tolerance
Instance details Defined in Numeric.RootFinding Methods (==) :: Tolerance -> Tolerance -> Bool # (/=) :: Tolerance -> Tolerance -> Bool #
Eq RiddersParam
Instance details Defined in Numeric.RootFinding Methods (==) :: RiddersParam -> RiddersParam -> Bool # (/=) :: RiddersParam -> RiddersParam -> Bool #
Eq RiddersStep
Instance details Defined in Numeric.RootFinding Methods (==) :: RiddersStep -> RiddersStep -> Bool # (/=) :: RiddersStep -> RiddersStep -> Bool #
Eq NewtonParam
Instance details Defined in Numeric.RootFinding Methods (==) :: NewtonParam -> NewtonParam -> Bool # (/=) :: NewtonParam -> NewtonParam -> Bool #
Eq NewtonStep
Instance details Defined in Numeric.RootFinding Methods (==) :: NewtonStep -> NewtonStep -> Bool # (/=) :: NewtonStep -> NewtonStep -> Bool #
Eq Pos
Instance details Defined in Text.Megaparsec.Pos Methods (==) :: Pos -> Pos -> Bool # (/=) :: Pos -> Pos -> Bool #
Eq InvalidPosException
Instance details Defined in Text.Megaparsec.Pos Methods (==) :: InvalidPosException -> InvalidPosException -> Bool # (/=) :: InvalidPosException -> InvalidPosException -> Bool #
Eq TyVarBndr
Instance details Defined in Language.Haskell.TH.Syntax Methods (==) :: TyVarBndr -> TyVarBndr -> Bool # (/=) :: TyVarBndr -> TyVarBndr -> Bool #
Eq LogLevel
Instance details Defined in Control.Monad.Logger Methods (==) :: LogLevel -> LogLevel -> Bool # (/=) :: LogLevel -> LogLevel -> Bool #
Eq Loc
Instance details Defined in Language.Haskell.TH.Syntax Methods (==) :: Loc -> Loc -> Bool # (/=) :: Loc -> Loc -> Bool #
Eq AddrInfoFlag
Instance details Defined in Network.Socket.Info Methods (==) :: AddrInfoFlag -> AddrInfoFlag -> Bool # (/=) :: AddrInfoFlag -> AddrInfoFlag -> Bool #
Eq AddrInfo
Instance details Defined in Network.Socket.Info Methods (==) :: AddrInfo -> AddrInfo -> Bool # (/=) :: AddrInfo -> AddrInfo -> Bool #
Eq NameInfoFlag
Instance details Defined in Network.Socket.Info Methods (==) :: NameInfoFlag -> NameInfoFlag -> Bool # (/=) :: NameInfoFlag -> NameInfoFlag -> Bool #
Eq SocketOption
Instance details Defined in Network.Socket.Options Methods (==) :: SocketOption -> SocketOption -> Bool # (/=) :: SocketOption -> SocketOption -> Bool #
Eq StructLinger
Instance details Defined in Network.Socket.Options Methods (==) :: StructLinger -> StructLinger -> Bool # (/=) :: StructLinger -> StructLinger -> Bool #
Eq Cmsg
Instance details Defined in Network.Socket.Posix.Cmsg Methods (==) :: Cmsg -> Cmsg -> Bool # (/=) :: Cmsg -> Cmsg -> Bool #
Eq CmsgId
Instance details Defined in Network.Socket.Posix.Cmsg Methods (==) :: CmsgId -> CmsgId -> Bool # (/=) :: CmsgId -> CmsgId -> Bool #
Eq IPv4TTL
Instance details Defined in Network.Socket.Posix.Cmsg Methods (==) :: IPv4TTL -> IPv4TTL -> Bool # (/=) :: IPv4TTL -> IPv4TTL -> Bool #
Eq IPv6HopLimit
Instance details Defined in Network.Socket.Posix.Cmsg Methods (==) :: IPv6HopLimit -> IPv6HopLimit -> Bool # (/=) :: IPv6HopLimit -> IPv6HopLimit -> Bool #
Eq IPv4TOS
Instance details Defined in Network.Socket.Posix.Cmsg Methods (==) :: IPv4TOS -> IPv4TOS -> Bool # (/=) :: IPv4TOS -> IPv4TOS -> Bool #
Eq IPv6TClass
Instance details Defined in Network.Socket.Posix.Cmsg Methods (==) :: IPv6TClass -> IPv6TClass -> Bool # (/=) :: IPv6TClass -> IPv6TClass -> Bool #
Eq IPv4PktInfo
Instance details Defined in Network.Socket.Posix.Cmsg Methods (==) :: IPv4PktInfo -> IPv4PktInfo -> Bool # (/=) :: IPv4PktInfo -> IPv4PktInfo -> Bool #
Eq IPv6PktInfo
Instance details Defined in Network.Socket.Posix.Cmsg Methods (==) :: IPv6PktInfo -> IPv6PktInfo -> Bool # (/=) :: IPv6PktInfo -> IPv6PktInfo -> Bool #
Eq SocketType
Instance details Defined in Network.Socket.Types Methods (==) :: SocketType -> SocketType -> Bool # (/=) :: SocketType -> SocketType -> Bool #
Eq Family
Instance details Defined in Network.Socket.Types Methods (==) :: Family -> Family -> Bool # (/=) :: Family -> Family -> Bool #
Eq PortNumber
Instance details Defined in Network.Socket.Types Methods (==) :: PortNumber -> PortNumber -> Bool # (/=) :: PortNumber -> PortNumber -> Bool #
Eq MsgFlag
Instance details Defined in Network.Socket.Flag Methods (==) :: MsgFlag -> MsgFlag -> Bool # (/=) :: MsgFlag -> MsgFlag -> Bool #
Eq URIAuth
Instance details Defined in Network.URI Methods (==) :: URIAuth -> URIAuth -> Bool # (/=) :: URIAuth -> URIAuth -> Bool #
Eq SelfEmbed
Instance details Defined in Database.Persist.Types.Base Methods (==) :: SelfEmbed -> SelfEmbed -> Bool # (/=) :: SelfEmbed -> SelfEmbed -> Bool #
Eq Token
Instance details Defined in Database.Persist.Quasi.Internal Methods (==) :: Token -> Token -> Bool # (/=) :: Token -> Token -> Bool #
Eq Line
Instance details Defined in Database.Persist.Quasi.Internal Methods (==) :: Line -> Line -> Bool # (/=) :: Line -> Line -> Bool #
Eq LinesWithComments
Instance details Defined in Database.Persist.Quasi.Internal Methods (==) :: LinesWithComments -> LinesWithComments -> Bool # (/=) :: LinesWithComments -> LinesWithComments -> Bool #
Eq UnboundEntityDef
Instance details Defined in Database.Persist.Quasi.Internal Methods (==) :: UnboundEntityDef -> UnboundEntityDef -> Bool # (/=) :: UnboundEntityDef -> UnboundEntityDef -> Bool #
Eq UnboundFieldDef
Instance details Defined in Database.Persist.Quasi.Internal Methods (==) :: UnboundFieldDef -> UnboundFieldDef -> Bool # (/=) :: UnboundFieldDef -> UnboundFieldDef -> Bool #
Eq PrimarySpec
Instance details Defined in Database.Persist.Quasi.Internal Methods (==) :: PrimarySpec -> PrimarySpec -> Bool # (/=) :: PrimarySpec -> PrimarySpec -> Bool #
Eq UnboundIdDef
Instance details Defined in Database.Persist.Quasi.Internal Methods (==) :: UnboundIdDef -> UnboundIdDef -> Bool # (/=) :: UnboundIdDef -> UnboundIdDef -> Bool #
Eq UnboundCompositeDef
Instance details Defined in Database.Persist.Quasi.Internal Methods (==) :: UnboundCompositeDef -> UnboundCompositeDef -> Bool # (/=) :: UnboundCompositeDef -> UnboundCompositeDef -> Bool #
Eq UnboundForeignDef
Instance details Defined in Database.Persist.Quasi.Internal Methods (==) :: UnboundForeignDef -> UnboundForeignDef -> Bool # (/=) :: UnboundForeignDef -> UnboundForeignDef -> Bool #
Eq UnboundForeignFieldList
Instance details Defined in Database.Persist.Quasi.Internal Methods (==) :: UnboundForeignFieldList -> UnboundForeignFieldList -> Bool # (/=) :: UnboundForeignFieldList -> UnboundForeignFieldList -> Bool #
Eq ForeignFieldReference
Instance details Defined in Database.Persist.Quasi.Internal Methods (==) :: ForeignFieldReference -> ForeignFieldReference -> Bool # (/=) :: ForeignFieldReference -> ForeignFieldReference -> Bool #
Eq OverflowNatural
Instance details Defined in Database.Persist.Class.PersistField Methods (==) :: OverflowNatural -> OverflowNatural -> Bool # (/=) :: OverflowNatural -> OverflowNatural -> Bool #
Eq Checkmark
Instance details Defined in Database.Persist.Types.Base Methods (==) :: Checkmark -> Checkmark -> Bool # (/=) :: Checkmark -> Checkmark -> Bool #
Eq IsNullable
Instance details Defined in Database.Persist.Types.Base Methods (==) :: IsNullable -> IsNullable -> Bool # (/=) :: IsNullable -> IsNullable -> Bool #
Eq WhyNullable
Instance details Defined in Database.Persist.Types.Base Methods (==) :: WhyNullable -> WhyNullable -> Bool # (/=) :: WhyNullable -> WhyNullable -> Bool #
Eq EntityDef
Instance details Defined in Database.Persist.Types.Base Methods (==) :: EntityDef -> EntityDef -> Bool # (/=) :: EntityDef -> EntityDef -> Bool #
Eq EntityIdDef
Instance details Defined in Database.Persist.Types.Base Methods (==) :: EntityIdDef -> EntityIdDef -> Bool # (/=) :: EntityIdDef -> EntityIdDef -> Bool #
Eq FieldAttr
Instance details Defined in Database.Persist.Types.Base Methods (==) :: FieldAttr -> FieldAttr -> Bool # (/=) :: FieldAttr -> FieldAttr -> Bool #
Eq FieldType
Instance details Defined in Database.Persist.Types.Base Methods (==) :: FieldType -> FieldType -> Bool # (/=) :: FieldType -> FieldType -> Bool #
Eq ReferenceDef
Instance details Defined in Database.Persist.Types.Base Methods (==) :: ReferenceDef -> ReferenceDef -> Bool # (/=) :: ReferenceDef -> ReferenceDef -> Bool #
Eq EmbedEntityDef
Instance details Defined in Database.Persist.Types.Base Methods (==) :: EmbedEntityDef -> EmbedEntityDef -> Bool # (/=) :: EmbedEntityDef -> EmbedEntityDef -> Bool #
Eq EmbedFieldDef
Instance details Defined in Database.Persist.Types.Base Methods (==) :: EmbedFieldDef -> EmbedFieldDef -> Bool # (/=) :: EmbedFieldDef -> EmbedFieldDef -> Bool #
Eq UniqueDef
Instance details Defined in Database.Persist.Types.Base Methods (==) :: UniqueDef -> UniqueDef -> Bool # (/=) :: UniqueDef -> UniqueDef -> Bool #
Eq CompositeDef
Instance details Defined in Database.Persist.Types.Base Methods (==) :: CompositeDef -> CompositeDef -> Bool # (/=) :: CompositeDef -> CompositeDef -> Bool #
Eq ForeignDef
Instance details Defined in Database.Persist.Types.Base Methods (==) :: ForeignDef -> ForeignDef -> Bool # (/=) :: ForeignDef -> ForeignDef -> Bool #
Eq FieldCascade
Instance details Defined in Database.Persist.Types.Base Methods (==) :: FieldCascade -> FieldCascade -> Bool # (/=) :: FieldCascade -> FieldCascade -> Bool #
Eq CascadeAction
Instance details Defined in Database.Persist.Types.Base Methods (==) :: CascadeAction -> CascadeAction -> Bool # (/=) :: CascadeAction -> CascadeAction -> Bool #
Eq SqlType
Instance details Defined in Database.Persist.Types.Base Methods (==) :: SqlType -> SqlType -> Bool # (/=) :: SqlType -> SqlType -> Bool #
Eq FieldDef
Instance details Defined in Database.Persist.Types.Base Methods (==) :: FieldDef -> FieldDef -> Bool # (/=) :: FieldDef -> FieldDef -> Bool #
Eq PersistValue
Instance details Defined in Database.Persist.PersistValue Methods (==) :: PersistValue -> PersistValue -> Bool # (/=) :: PersistValue -> PersistValue -> Bool #
Eq LiteralType
Instance details Defined in Database.Persist.PersistValue Methods (==) :: LiteralType -> LiteralType -> Bool # (/=) :: LiteralType -> LiteralType -> Bool #
Eq FieldNameDB
Instance details Defined in Database.Persist.Names Methods (==) :: FieldNameDB -> FieldNameDB -> Bool # (/=) :: FieldNameDB -> FieldNameDB -> Bool #
Eq FieldNameHS
Instance details Defined in Database.Persist.Names Methods (==) :: FieldNameHS -> FieldNameHS -> Bool # (/=) :: FieldNameHS -> FieldNameHS -> Bool #
Eq EntityNameHS
Instance details Defined in Database.Persist.Names Methods (==) :: EntityNameHS -> EntityNameHS -> Bool # (/=) :: EntityNameHS -> EntityNameHS -> Bool #
Eq EntityNameDB
Instance details Defined in Database.Persist.Names Methods (==) :: EntityNameDB -> EntityNameDB -> Bool # (/=) :: EntityNameDB -> EntityNameDB -> Bool #
Eq ConstraintNameDB
Instance details Defined in Database.Persist.Names Methods (==) :: ConstraintNameDB -> ConstraintNameDB -> Bool # (/=) :: ConstraintNameDB -> ConstraintNameDB -> Bool #
Eq ConstraintNameHS
Instance details Defined in Database.Persist.Names Methods (==) :: ConstraintNameHS -> ConstraintNameHS -> Bool # (/=) :: ConstraintNameHS -> ConstraintNameHS -> Bool #
Eq Doc
Instance details Defined in Text.PrettyPrint.HughesPJ Methods (==) :: Doc -> Doc -> Bool # (/=) :: Doc -> Doc -> Bool #
Eq TextDetails
Instance details Defined in Text.PrettyPrint.Annotated.HughesPJ Methods (==) :: TextDetails -> TextDetails -> Bool # (/=) :: TextDetails -> TextDetails -> Bool #
Eq Style
Instance details Defined in Text.PrettyPrint.Annotated.HughesPJ Methods (==) :: Style -> Style -> Bool # (/=) :: Style -> Style -> Bool #
Eq Mode
Instance details Defined in Text.PrettyPrint.Annotated.HughesPJ Methods (==) :: Mode -> Mode -> Bool # (/=) :: Mode -> Mode -> Bool #
Eq CheckColorTty
Instance details Defined in Text.Pretty.Simple.Internal.Printer Methods (==) :: CheckColorTty -> CheckColorTty -> Bool # (/=) :: CheckColorTty -> CheckColorTty -> Bool #
Eq StringOutputStyle
Instance details Defined in Text.Pretty.Simple.Internal.Printer Methods (==) :: StringOutputStyle -> StringOutputStyle -> Bool # (/=) :: StringOutputStyle -> StringOutputStyle -> Bool #
Eq OutputOptions
Instance details Defined in Text.Pretty.Simple.Internal.Printer Methods (==) :: OutputOptions -> OutputOptions -> Bool # (/=) :: OutputOptions -> OutputOptions -> Bool #
Eq Expr
Instance details Defined in Text.Pretty.Simple.Internal.Expr Methods (==) :: Expr -> Expr -> Bool # (/=) :: Expr -> Expr -> Bool #
Eq ColorOptions
Instance details Defined in Text.Pretty.Simple.Internal.Color Methods (==) :: ColorOptions -> ColorOptions -> Bool # (/=) :: ColorOptions -> ColorOptions -> Bool #
Eq Style
Instance details Defined in Text.Pretty.Simple.Internal.Color Methods (==) :: Style -> Style -> Bool # (/=) :: Style -> Style -> Bool #
Eq Intensity
Instance details Defined in Prettyprinter.Render.Terminal.Internal Methods (==) :: Intensity -> Intensity -> Bool # (/=) :: Intensity -> Intensity -> Bool #
Eq Color
Instance details Defined in Prettyprinter.Render.Terminal.Internal Methods (==) :: Color -> Color -> Bool # (/=) :: Color -> Color -> Bool #
Eq FusionDepth
Instance details Defined in Prettyprinter.Internal Methods (==) :: FusionDepth -> FusionDepth -> Bool # (/=) :: FusionDepth -> FusionDepth -> Bool #
Eq PageWidth
Instance details Defined in Prettyprinter.Internal Methods (==) :: PageWidth -> PageWidth -> Bool # (/=) :: PageWidth -> PageWidth -> Bool #
Eq LayoutOptions
Instance details Defined in Prettyprinter.Internal Methods (==) :: LayoutOptions -> LayoutOptions -> Bool # (/=) :: LayoutOptions -> LayoutOptions -> Bool #
Eq Bold
Instance details Defined in Prettyprinter.Render.Terminal.Internal Methods (==) :: Bold -> Bold -> Bool # (/=) :: Bold -> Bold -> Bool #
Eq Underlined
Instance details Defined in Prettyprinter.Render.Terminal.Internal Methods (==) :: Underlined -> Underlined -> Bool # (/=) :: Underlined -> Underlined -> Bool #
Eq Italicized
Instance details Defined in Prettyprinter.Render.Terminal.Internal Methods (==) :: Italicized -> Italicized -> Bool # (/=) :: Italicized -> Italicized -> Bool #
Eq AnsiStyle
Instance details Defined in Prettyprinter.Render.Terminal.Internal Methods (==) :: AnsiStyle -> AnsiStyle -> Bool # (/=) :: AnsiStyle -> AnsiStyle -> Bool #
Eq ByteArray	Since: primitive-0.6.3.0
Instance details Defined in Data.Primitive.ByteArray Methods (==) :: ByteArray -> ByteArray -> Bool # (/=) :: ByteArray -> ByteArray -> Bool #
Eq Content
Instance details Defined in Text.Hamlet.Parse Methods (==) :: Content -> Content -> Bool # (/=) :: Content -> Content -> Bool #
Eq Doc
Instance details Defined in Text.Hamlet.Parse Methods (==) :: Doc -> Doc -> Bool # (/=) :: Doc -> Doc -> Bool #
Eq Binding
Instance details Defined in Text.Hamlet.Parse Methods (==) :: Binding -> Binding -> Bool # (/=) :: Binding -> Binding -> Bool #
Eq DataConstr
Instance details Defined in Text.Hamlet.Parse Methods (==) :: DataConstr -> DataConstr -> Bool # (/=) :: DataConstr -> DataConstr -> Bool #
Eq Module
Instance details Defined in Text.Hamlet.Parse Methods (==) :: Module -> Module -> Bool # (/=) :: Module -> Module -> Bool #
Eq Content
Instance details Defined in Text.Internal.Css Methods (==) :: Content -> Content -> Bool # (/=) :: Content -> Content -> Bool #
Eq PixelSize
Instance details Defined in Text.Internal.CssCommon Methods (==) :: PixelSize -> PixelSize -> Bool # (/=) :: PixelSize -> PixelSize -> Bool #
Eq ExSize
Instance details Defined in Text.Internal.CssCommon Methods (==) :: ExSize -> ExSize -> Bool # (/=) :: ExSize -> ExSize -> Bool #
Eq EmSize
Instance details Defined in Text.Internal.CssCommon Methods (==) :: EmSize -> EmSize -> Bool # (/=) :: EmSize -> EmSize -> Bool #
Eq AbsoluteUnit
Instance details Defined in Text.Internal.CssCommon Methods (==) :: AbsoluteUnit -> AbsoluteUnit -> Bool # (/=) :: AbsoluteUnit -> AbsoluteUnit -> Bool #
Eq AbsoluteSize
Instance details Defined in Text.Internal.CssCommon Methods (==) :: AbsoluteSize -> AbsoluteSize -> Bool # (/=) :: AbsoluteSize -> AbsoluteSize -> Bool #
Eq PercentageSize
Instance details Defined in Text.Internal.CssCommon Methods (==) :: PercentageSize -> PercentageSize -> Bool # (/=) :: PercentageSize -> PercentageSize -> Bool #
Eq VarType
Instance details Defined in Text.Shakespeare Methods (==) :: VarType -> VarType -> Bool # (/=) :: VarType -> VarType -> Bool #
Eq NumThreads
Instance details Defined in Test.Tasty.Options.Core Methods (==) :: NumThreads -> NumThreads -> Bool # (/=) :: NumThreads -> NumThreads -> Bool #
Eq Expr
Instance details Defined in Test.Tasty.Patterns.Types Methods (==) :: Expr -> Expr -> Bool # (/=) :: Expr -> Expr -> Bool #
Eq ModName
Instance details Defined in Language.Haskell.TH.Syntax Methods (==) :: ModName -> ModName -> Bool # (/=) :: ModName -> ModName -> Bool #
Eq PkgName
Instance details Defined in Language.Haskell.TH.Syntax Methods (==) :: PkgName -> PkgName -> Bool # (/=) :: PkgName -> PkgName -> Bool #
Eq Module
Instance details Defined in Language.Haskell.TH.Syntax Methods (==) :: Module -> Module -> Bool # (/=) :: Module -> Module -> Bool #
Eq OccName
Instance details Defined in Language.Haskell.TH.Syntax Methods (==) :: OccName -> OccName -> Bool # (/=) :: OccName -> OccName -> Bool #
Eq NameFlavour
Instance details Defined in Language.Haskell.TH.Syntax Methods (==) :: NameFlavour -> NameFlavour -> Bool # (/=) :: NameFlavour -> NameFlavour -> Bool #
Eq NameSpace
Instance details Defined in Language.Haskell.TH.Syntax Methods (==) :: NameSpace -> NameSpace -> Bool # (/=) :: NameSpace -> NameSpace -> Bool #
Eq Info
Instance details Defined in Language.Haskell.TH.Syntax Methods (==) :: Info -> Info -> Bool # (/=) :: Info -> Info -> Bool #
Eq ModuleInfo
Instance details Defined in Language.Haskell.TH.Syntax Methods (==) :: ModuleInfo -> ModuleInfo -> Bool # (/=) :: ModuleInfo -> ModuleInfo -> Bool #
Eq Fixity
Instance details Defined in Language.Haskell.TH.Syntax Methods (==) :: Fixity -> Fixity -> Bool # (/=) :: Fixity -> Fixity -> Bool #
Eq FixityDirection
Instance details Defined in Language.Haskell.TH.Syntax Methods (==) :: FixityDirection -> FixityDirection -> Bool # (/=) :: FixityDirection -> FixityDirection -> Bool #
Eq Lit
Instance details Defined in Language.Haskell.TH.Syntax Methods (==) :: Lit -> Lit -> Bool # (/=) :: Lit -> Lit -> Bool #
Eq Bytes
Instance details Defined in Language.Haskell.TH.Syntax Methods (==) :: Bytes -> Bytes -> Bool # (/=) :: Bytes -> Bytes -> Bool #
Eq Body
Instance details Defined in Language.Haskell.TH.Syntax Methods (==) :: Body -> Body -> Bool # (/=) :: Body -> Body -> Bool #
Eq Guard
Instance details Defined in Language.Haskell.TH.Syntax Methods (==) :: Guard -> Guard -> Bool # (/=) :: Guard -> Guard -> Bool #
Eq Stmt
Instance details Defined in Language.Haskell.TH.Syntax Methods (==) :: Stmt -> Stmt -> Bool # (/=) :: Stmt -> Stmt -> Bool #
Eq Range
Instance details Defined in Language.Haskell.TH.Syntax Methods (==) :: Range -> Range -> Bool # (/=) :: Range -> Range -> Bool #
Eq DerivClause
Instance details Defined in Language.Haskell.TH.Syntax Methods (==) :: DerivClause -> DerivClause -> Bool # (/=) :: DerivClause -> DerivClause -> Bool #
Eq DerivStrategy
Instance details Defined in Language.Haskell.TH.Syntax Methods (==) :: DerivStrategy -> DerivStrategy -> Bool # (/=) :: DerivStrategy -> DerivStrategy -> Bool #
Eq TypeFamilyHead
Instance details Defined in Language.Haskell.TH.Syntax Methods (==) :: TypeFamilyHead -> TypeFamilyHead -> Bool # (/=) :: TypeFamilyHead -> TypeFamilyHead -> Bool #
Eq TySynEqn
Instance details Defined in Language.Haskell.TH.Syntax Methods (==) :: TySynEqn -> TySynEqn -> Bool # (/=) :: TySynEqn -> TySynEqn -> Bool #
Eq Foreign
Instance details Defined in Language.Haskell.TH.Syntax Methods (==) :: Foreign -> Foreign -> Bool # (/=) :: Foreign -> Foreign -> Bool #
Eq Callconv
Instance details Defined in Language.Haskell.TH.Syntax Methods (==) :: Callconv -> Callconv -> Bool # (/=) :: Callconv -> Callconv -> Bool #
Eq Safety
Instance details Defined in Language.Haskell.TH.Syntax Methods (==) :: Safety -> Safety -> Bool # (/=) :: Safety -> Safety -> Bool #
Eq Pragma
Instance details Defined in Language.Haskell.TH.Syntax Methods (==) :: Pragma -> Pragma -> Bool # (/=) :: Pragma -> Pragma -> Bool #
Eq Inline
Instance details Defined in Language.Haskell.TH.Syntax Methods (==) :: Inline -> Inline -> Bool # (/=) :: Inline -> Inline -> Bool #
Eq RuleMatch
Instance details Defined in Language.Haskell.TH.Syntax Methods (==) :: RuleMatch -> RuleMatch -> Bool # (/=) :: RuleMatch -> RuleMatch -> Bool #
Eq Phases
Instance details Defined in Language.Haskell.TH.Syntax Methods (==) :: Phases -> Phases -> Bool # (/=) :: Phases -> Phases -> Bool #
Eq RuleBndr
Instance details Defined in Language.Haskell.TH.Syntax Methods (==) :: RuleBndr -> RuleBndr -> Bool # (/=) :: RuleBndr -> RuleBndr -> Bool #
Eq AnnTarget
Instance details Defined in Language.Haskell.TH.Syntax Methods (==) :: AnnTarget -> AnnTarget -> Bool # (/=) :: AnnTarget -> AnnTarget -> Bool #
Eq SourceUnpackedness
Instance details Defined in Language.Haskell.TH.Syntax Methods (==) :: SourceUnpackedness -> SourceUnpackedness -> Bool # (/=) :: SourceUnpackedness -> SourceUnpackedness -> Bool #
Eq SourceStrictness
Instance details Defined in Language.Haskell.TH.Syntax Methods (==) :: SourceStrictness -> SourceStrictness -> Bool # (/=) :: SourceStrictness -> SourceStrictness -> Bool #
Eq DecidedStrictness
Instance details Defined in Language.Haskell.TH.Syntax Methods (==) :: DecidedStrictness -> DecidedStrictness -> Bool # (/=) :: DecidedStrictness -> DecidedStrictness -> Bool #
Eq Con
Instance details Defined in Language.Haskell.TH.Syntax Methods (==) :: Con -> Con -> Bool # (/=) :: Con -> Con -> Bool #
Eq Bang
Instance details Defined in Language.Haskell.TH.Syntax Methods (==) :: Bang -> Bang -> Bool # (/=) :: Bang -> Bang -> Bool #
Eq PatSynDir
Instance details Defined in Language.Haskell.TH.Syntax Methods (==) :: PatSynDir -> PatSynDir -> Bool # (/=) :: PatSynDir -> PatSynDir -> Bool #
Eq PatSynArgs
Instance details Defined in Language.Haskell.TH.Syntax Methods (==) :: PatSynArgs -> PatSynArgs -> Bool # (/=) :: PatSynArgs -> PatSynArgs -> Bool #
Eq FamilyResultSig
Instance details Defined in Language.Haskell.TH.Syntax Methods (==) :: FamilyResultSig -> FamilyResultSig -> Bool # (/=) :: FamilyResultSig -> FamilyResultSig -> Bool #
Eq TyLit
Instance details Defined in Language.Haskell.TH.Syntax Methods (==) :: TyLit -> TyLit -> Bool # (/=) :: TyLit -> TyLit -> Bool #
Eq Role
Instance details Defined in Language.Haskell.TH.Syntax Methods (==) :: Role -> Role -> Bool # (/=) :: Role -> Role -> Bool #
Eq AnnLookup
Instance details Defined in Language.Haskell.TH.Syntax Methods (==) :: AnnLookup -> AnnLookup -> Bool # (/=) :: AnnLookup -> AnnLookup -> Bool #
Eq UnicodeException
Instance details Defined in Data.Text.Encoding.Error Methods (==) :: UnicodeException -> UnicodeException -> Bool # (/=) :: UnicodeException -> UnicodeException -> Bool #
Eq DatatypeInfo
Instance details Defined in Language.Haskell.TH.Datatype Methods (==) :: DatatypeInfo -> DatatypeInfo -> Bool # (/=) :: DatatypeInfo -> DatatypeInfo -> Bool #
Eq DatatypeVariant
Instance details Defined in Language.Haskell.TH.Datatype Methods (==) :: DatatypeVariant -> DatatypeVariant -> Bool # (/=) :: DatatypeVariant -> DatatypeVariant -> Bool #
Eq ConstructorInfo
Instance details Defined in Language.Haskell.TH.Datatype Methods (==) :: ConstructorInfo -> ConstructorInfo -> Bool # (/=) :: ConstructorInfo -> ConstructorInfo -> Bool #
Eq ConstructorVariant
Instance details Defined in Language.Haskell.TH.Datatype Methods (==) :: ConstructorVariant -> ConstructorVariant -> Bool # (/=) :: ConstructorVariant -> ConstructorVariant -> Bool #
Eq FieldStrictness
Instance details Defined in Language.Haskell.TH.Datatype Methods (==) :: FieldStrictness -> FieldStrictness -> Bool # (/=) :: FieldStrictness -> FieldStrictness -> Bool #
Eq Unpackedness
Instance details Defined in Language.Haskell.TH.Datatype Methods (==) :: Unpackedness -> Unpackedness -> Bool # (/=) :: Unpackedness -> Unpackedness -> Bool #
Eq Strictness
Instance details Defined in Language.Haskell.TH.Datatype Methods (==) :: Strictness -> Strictness -> Bool # (/=) :: Strictness -> Strictness -> Bool #
Eq Specificity
Instance details Defined in Language.Haskell.TH.Datatype.TyVarBndr Methods (==) :: Specificity -> Specificity -> Bool # (/=) :: Specificity -> Specificity -> Bool #
Eq TimeLocale
Instance details Defined in Data.Time.Format.Locale Methods (==) :: TimeLocale -> TimeLocale -> Bool # (/=) :: TimeLocale -> TimeLocale -> Bool #
Eq LocalTime
Instance details Defined in Data.Time.LocalTime.Internal.LocalTime Methods (==) :: LocalTime -> LocalTime -> Bool # (/=) :: LocalTime -> LocalTime -> Bool #
Eq TimeOfDay
Instance details Defined in Data.Time.LocalTime.Internal.TimeOfDay Methods (==) :: TimeOfDay -> TimeOfDay -> Bool # (/=) :: TimeOfDay -> TimeOfDay -> Bool #
Eq TimeZone
Instance details Defined in Data.Time.LocalTime.Internal.TimeZone Methods (==) :: TimeZone -> TimeZone -> Bool # (/=) :: TimeZone -> TimeZone -> Bool #
Eq CalendarDiffTime
Instance details Defined in Data.Time.LocalTime.Internal.CalendarDiffTime Methods (==) :: CalendarDiffTime -> CalendarDiffTime -> Bool # (/=) :: CalendarDiffTime -> CalendarDiffTime -> Bool #
Eq UniversalTime
Instance details Defined in Data.Time.Clock.Internal.UniversalTime Methods (==) :: UniversalTime -> UniversalTime -> Bool # (/=) :: UniversalTime -> UniversalTime -> Bool #
Eq SystemTime
Instance details Defined in Data.Time.Clock.Internal.SystemTime Methods (==) :: SystemTime -> SystemTime -> Bool # (/=) :: SystemTime -> SystemTime -> Bool #
Eq NominalDiffTime
Instance details Defined in Data.Time.Clock.Internal.NominalDiffTime Methods (==) :: NominalDiffTime -> NominalDiffTime -> Bool # (/=) :: NominalDiffTime -> NominalDiffTime -> Bool #
Eq DiffTime
Instance details Defined in Data.Time.Clock.Internal.DiffTime Methods (==) :: DiffTime -> DiffTime -> Bool # (/=) :: DiffTime -> DiffTime -> Bool #
Eq DayOfWeek
Instance details Defined in Data.Time.Calendar.Week Methods (==) :: DayOfWeek -> DayOfWeek -> Bool # (/=) :: DayOfWeek -> DayOfWeek -> Bool #
Eq Day
Instance details Defined in Data.Time.Calendar.Days Methods (==) :: Day -> Day -> Bool # (/=) :: Day -> Day -> Bool #
Eq CalendarDiffDays
Instance details Defined in Data.Time.Calendar.CalendarDiffDays Methods (==) :: CalendarDiffDays -> CalendarDiffDays -> Bool # (/=) :: CalendarDiffDays -> CalendarDiffDays -> Bool #
Eq UnixTime
Instance details Defined in Data.UnixTime.Types Methods (==) :: UnixTime -> UnixTime -> Bool # (/=) :: UnixTime -> UnixTime -> Bool #
Eq UnixDiffTime
Instance details Defined in Data.UnixTime.Types Methods (==) :: UnixDiffTime -> UnixDiffTime -> Bool # (/=) :: UnixDiffTime -> UnixDiffTime -> Bool #
Eq ConcException
Instance details Defined in UnliftIO.Internals.Async Methods (==) :: ConcException -> ConcException -> Bool # (/=) :: ConcException -> ConcException -> Bool #
Eq UnpackedUUID
Instance details Defined in Data.UUID.Types.Internal Methods (==) :: UnpackedUUID -> UnpackedUUID -> Bool # (/=) :: UnpackedUUID -> UnpackedUUID -> Bool #
Eq UUID
Instance details Defined in Data.UUID.Types.Internal Methods (==) :: UUID -> UUID -> Bool # (/=) :: UUID -> UUID -> Bool #
Eq Piece
Instance details Defined in WaiAppStatic.Types Methods (==) :: Piece -> Piece -> Bool # (/=) :: Piece -> Piece -> Bool #
Eq CorsResourcePolicy
Instance details Defined in Network.Wai.Middleware.Cors Methods (==) :: CorsResourcePolicy -> CorsResourcePolicy -> Bool # (/=) :: CorsResourcePolicy -> CorsResourcePolicy -> Bool #
Eq InvalidRequest
Instance details Defined in Network.Wai.Handler.Warp.Types Methods (==) :: InvalidRequest -> InvalidRequest -> Bool # (/=) :: InvalidRequest -> InvalidRequest -> Bool #
Eq Event
Instance details Defined in Data.XML.Types Methods (==) :: Event -> Event -> Bool # (/=) :: Event -> Event -> Bool #
Eq ExternalID
Instance details Defined in Data.XML.Types Methods (==) :: ExternalID -> ExternalID -> Bool # (/=) :: ExternalID -> ExternalID -> Bool #
Eq Doctype
Instance details Defined in Data.XML.Types Methods (==) :: Doctype -> Doctype -> Bool # (/=) :: Doctype -> Doctype -> Bool #
Eq Name
Instance details Defined in Data.XML.Types Methods (==) :: Name -> Name -> Bool # (/=) :: Name -> Name -> Bool #
Eq Miscellaneous
Instance details Defined in Data.XML.Types Methods (==) :: Miscellaneous -> Miscellaneous -> Bool # (/=) :: Miscellaneous -> Miscellaneous -> Bool #
Eq Instruction
Instance details Defined in Data.XML.Types Methods (==) :: Instruction -> Instruction -> Bool # (/=) :: Instruction -> Instruction -> Bool #
Eq Prologue
Instance details Defined in Data.XML.Types Methods (==) :: Prologue -> Prologue -> Bool # (/=) :: Prologue -> Prologue -> Bool #
Eq Document
Instance details Defined in Data.XML.Types Methods (==) :: Document -> Document -> Bool # (/=) :: Document -> Document -> Bool #
Eq Node
Instance details Defined in Data.XML.Types Methods (==) :: Node -> Node -> Bool # (/=) :: Node -> Node -> Bool #
Eq Element
Instance details Defined in Data.XML.Types Methods (==) :: Element -> Element -> Bool # (/=) :: Element -> Element -> Bool #
Eq Content
Instance details Defined in Data.XML.Types Methods (==) :: Content -> Content -> Bool # (/=) :: Content -> Content -> Bool #
Eq Warning
Instance details Defined in Data.Yaml.Internal Methods (==) :: Warning -> Warning -> Bool # (/=) :: Warning -> Warning -> Bool #
Eq FormMessage
Instance details Defined in Yesod.Form.Types Methods (==) :: FormMessage -> FormMessage -> Bool # (/=) :: FormMessage -> FormMessage -> Bool #
Eq Enctype
Instance details Defined in Yesod.Form.Types Methods (==) :: Enctype -> Enctype -> Bool # (/=) :: Enctype -> Enctype -> Bool #
Eq Textarea
Instance details Defined in Yesod.Form.Fields Methods (==) :: Textarea -> Textarea -> Bool # (/=) :: Textarea -> Textarea -> Bool #
Eq Header
Instance details Defined in Yesod.Core.Types Methods (==) :: Header -> Header -> Bool # (/=) :: Header -> Header -> Bool #
Eq ErrorResponse
Instance details Defined in Yesod.Core.Types Methods (==) :: ErrorResponse -> ErrorResponse -> Bool # (/=) :: ErrorResponse -> ErrorResponse -> Bool #
Eq AuthResult
Instance details Defined in Yesod.Core.Types Methods (==) :: AuthResult -> AuthResult -> Bool # (/=) :: AuthResult -> AuthResult -> Bool #
Eq TypeTree
Instance details Defined in Yesod.Routes.Parse Methods (==) :: TypeTree -> TypeTree -> Bool # (/=) :: TypeTree -> TypeTree -> Bool #
Eq ClientSessionDateCache
Instance details Defined in Yesod.Core.Types Methods (==) :: ClientSessionDateCache -> ClientSessionDateCache -> Bool # (/=) :: ClientSessionDateCache -> ClientSessionDateCache -> Bool #
Eq DictionaryHash
Instance details Defined in Codec.Compression.Zlib.Stream Methods (==) :: DictionaryHash -> DictionaryHash -> Bool # (/=) :: DictionaryHash -> DictionaryHash -> Bool #
Eq Format
Instance details Defined in Codec.Compression.Zlib.Stream Methods (==) :: Format -> Format -> Bool # (/=) :: Format -> Format -> Bool #
Eq Method
Instance details Defined in Codec.Compression.Zlib.Stream Methods (==) :: Method -> Method -> Bool # (/=) :: Method -> Method -> Bool #
Eq CompressionLevel
Instance details Defined in Codec.Compression.Zlib.Stream Methods (==) :: CompressionLevel -> CompressionLevel -> Bool # (/=) :: CompressionLevel -> CompressionLevel -> Bool #
Eq MemoryLevel
Instance details Defined in Codec.Compression.Zlib.Stream Methods (==) :: MemoryLevel -> MemoryLevel -> Bool # (/=) :: MemoryLevel -> MemoryLevel -> Bool #
Eq CompressionStrategy
Instance details Defined in Codec.Compression.Zlib.Stream Methods (==) :: CompressionStrategy -> CompressionStrategy -> Bool # (/=) :: CompressionStrategy -> CompressionStrategy -> Bool #
Eq Content
Instance details Defined in Text.Shakespeare Methods (==) :: Content -> Content -> Bool # (/=) :: Content -> Content -> Bool #
Eq Line
Instance details Defined in Text.Hamlet.Parse Methods (==) :: Line -> Line -> Bool # (/=) :: Line -> Line -> Bool #
Eq ConditionalBlock
Instance details Defined in Hledger.Read.CsvReader Methods (==) :: ConditionalBlock -> ConditionalBlock -> Bool # (/=) :: ConditionalBlock -> ConditionalBlock -> Bool #
Eq CsvRules
Instance details Defined in Hledger.Read.CsvReader Methods (==) :: CsvRules -> CsvRules -> Bool # (/=) :: CsvRules -> CsvRules -> Bool #
Eq Matcher
Instance details Defined in Hledger.Read.CsvReader Methods (==) :: Matcher -> Matcher -> Bool # (/=) :: Matcher -> Matcher -> Bool #
Eq MatcherPrefix
Instance details Defined in Hledger.Read.CsvReader Methods (==) :: MatcherPrefix -> MatcherPrefix -> Bool # (/=) :: MatcherPrefix -> MatcherPrefix -> Bool #
Eq B
Instance details Defined in Data.Text.Short.Internal Methods (==) :: B -> B -> Bool # (/=) :: B -> B -> Bool #
Eq Layer
Instance details Defined in Prettyprinter.Render.Terminal.Internal Methods (==) :: Layer -> Layer -> Bool # (/=) :: Layer -> Layer -> Bool #
Eq Capability Source #
Instance details Defined in Hledger.Web.WebOptions Methods (==) :: Capability -> Capability -> Bool # (/=) :: Capability -> Capability -> Bool #
Eq AmbiguousNumber
Instance details Defined in Hledger.Read.Common Methods (==) :: AmbiguousNumber -> AmbiguousNumber -> Bool # (/=) :: AmbiguousNumber -> AmbiguousNumber -> Bool #
Eq DigitGrp
Instance details Defined in Hledger.Read.Common Methods (==) :: DigitGrp -> DigitGrp -> Bool # (/=) :: DigitGrp -> DigitGrp -> Bool #
Eq RawNumber
Instance details Defined in Hledger.Read.Common Methods (==) :: RawNumber -> RawNumber -> Bool # (/=) :: RawNumber -> RawNumber -> Bool #
Eq Etag
Instance details Defined in Yesod.Core.Handler Methods (==) :: Etag -> Etag -> Bool # (/=) :: Etag -> Etag -> Bool #
Eq Bound
Instance details Defined in Network.Wai.Parse Methods (==) :: Bound -> Bound -> Bool # (/=) :: Bound -> Bound -> Bool #
Eq CodePoint
Instance details Defined in Data.Text.Encoding Methods (==) :: CodePoint -> CodePoint -> Bool # (/=) :: CodePoint -> CodePoint -> Bool #
Eq DecoderState
Instance details Defined in Data.Text.Encoding Methods (==) :: DecoderState -> DecoderState -> Bool # (/=) :: DecoderState -> DecoderState -> Bool #
Eq a => Eq [a]
Instance details Defined in GHC.Classes Methods (==) :: [a] -> [a] -> Bool # (/=) :: [a] -> [a] -> Bool #
Eq a => Eq (Maybe a)	Since: base-2.1
Instance details Defined in GHC.Maybe Methods (==) :: Maybe a -> Maybe a -> Bool # (/=) :: Maybe a -> Maybe a -> Bool #
Eq a => Eq (Ratio a)	Since: base-2.1
Instance details Defined in GHC.Real Methods (==) :: Ratio a -> Ratio a -> Bool # (/=) :: Ratio a -> Ratio a -> Bool #
Eq (Ptr a)	Since: base-2.1
Instance details Defined in GHC.Ptr Methods (==) :: Ptr a -> Ptr a -> Bool # (/=) :: Ptr a -> Ptr a -> Bool #
Eq (FunPtr a)
Instance details Defined in GHC.Ptr Methods (==) :: FunPtr a -> FunPtr a -> Bool # (/=) :: FunPtr a -> FunPtr a -> Bool #
Eq p => Eq (Par1 p)	Since: base-4.7.0.0
Instance details Defined in GHC.Generics Methods (==) :: Par1 p -> Par1 p -> Bool # (/=) :: Par1 p -> Par1 p -> Bool #
Integral i => Eq (DecimalRaw i)
Instance details Defined in Data.Decimal Methods (==) :: DecimalRaw i -> DecimalRaw i -> Bool # (/=) :: DecimalRaw i -> DecimalRaw i -> Bool #
Eq a => Eq (Only a)
Instance details Defined in Data.Tuple.Only Methods (==) :: Only a -> Only a -> Bool # (/=) :: Only a -> Only a -> Bool #
Eq (Encoding' a)
Instance details Defined in Data.Aeson.Encoding.Internal Methods (==) :: Encoding' a -> Encoding' a -> Bool # (/=) :: Encoding' a -> Encoding' a -> Bool #
Eq a => Eq (IResult a)
Instance details Defined in Data.Aeson.Types.Internal Methods (==) :: IResult a -> IResult a -> Bool # (/=) :: IResult a -> IResult a -> Bool #
Eq a => Eq (Result a)
Instance details Defined in Data.Aeson.Types.Internal Methods (==) :: Result a -> Result a -> Bool # (/=) :: Result a -> Result a -> Bool #
Eq a => Eq (Complex a)	Since: base-2.1
Instance details Defined in Data.Complex Methods (==) :: Complex a -> Complex a -> Bool # (/=) :: Complex a -> Complex a -> Bool #
Eq a => Eq (Min a)	Since: base-4.9.0.0
Instance details Defined in Data.Semigroup Methods (==) :: Min a -> Min a -> Bool # (/=) :: Min a -> Min a -> Bool #
Eq a => Eq (Max a)	Since: base-4.9.0.0
Instance details Defined in Data.Semigroup Methods (==) :: Max a -> Max a -> Bool # (/=) :: Max a -> Max a -> Bool #
Eq a => Eq (First a)	Since: base-4.9.0.0
Instance details Defined in Data.Semigroup Methods (==) :: First a -> First a -> Bool # (/=) :: First a -> First a -> Bool #
Eq a => Eq (Last a)	Since: base-4.9.0.0
Instance details Defined in Data.Semigroup Methods (==) :: Last a -> Last a -> Bool # (/=) :: Last a -> Last a -> Bool #
Eq m => Eq (WrappedMonoid m)	Since: base-4.9.0.0
Instance details Defined in Data.Semigroup Methods (==) :: WrappedMonoid m -> WrappedMonoid m -> Bool # (/=) :: WrappedMonoid m -> WrappedMonoid m -> Bool #
Eq a => Eq (Option a)	Since: base-4.9.0.0
Instance details Defined in Data.Semigroup Methods (==) :: Option a -> Option a -> Bool # (/=) :: Option a -> Option a -> Bool #
Eq a => Eq (ZipList a)	Since: base-4.7.0.0
Instance details Defined in Control.Applicative Methods (==) :: ZipList a -> ZipList a -> Bool # (/=) :: ZipList a -> ZipList a -> Bool #
Eq a => Eq (Identity a)	Since: base-4.8.0.0
Instance details Defined in Data.Functor.Identity Methods (==) :: Identity a -> Identity a -> Bool # (/=) :: Identity a -> Identity a -> Bool #
Eq (IORef a)	Pointer equality. Since: base-4.0.0.0
Instance details Defined in GHC.IORef Methods (==) :: IORef a -> IORef a -> Bool # (/=) :: IORef a -> IORef a -> Bool #
Eq a => Eq (First a)	Since: base-2.1
Instance details Defined in Data.Monoid Methods (==) :: First a -> First a -> Bool # (/=) :: First a -> First a -> Bool #
Eq a => Eq (Last a)	Since: base-2.1
Instance details Defined in Data.Monoid Methods (==) :: Last a -> Last a -> Bool # (/=) :: Last a -> Last a -> Bool #
Eq a => Eq (Dual a)	Since: base-2.1
Instance details Defined in Data.Semigroup.Internal Methods (==) :: Dual a -> Dual a -> Bool # (/=) :: Dual a -> Dual a -> Bool #
Eq a => Eq (Sum a)	Since: base-2.1
Instance details Defined in Data.Semigroup.Internal Methods (==) :: Sum a -> Sum a -> Bool # (/=) :: Sum a -> Sum a -> Bool #
Eq a => Eq (Product a)	Since: base-2.1
Instance details Defined in Data.Semigroup.Internal Methods (==) :: Product a -> Product a -> Bool # (/=) :: Product a -> Product a -> Bool #
Eq a => Eq (Down a)	Since: base-4.6.0.0
Instance details Defined in Data.Ord Methods (==) :: Down a -> Down a -> Bool # (/=) :: Down a -> Down a -> Bool #
Eq a => Eq (NonEmpty a)	Since: base-4.9.0.0
Instance details Defined in GHC.Base Methods (==) :: NonEmpty a -> NonEmpty a -> Bool # (/=) :: NonEmpty a -> NonEmpty a -> Bool #
Eq e => Eq (Base64Error e)
Instance details Defined in Data.Text.Encoding.Base64.Error Methods (==) :: Base64Error e -> Base64Error e -> Bool # (/=) :: Base64Error e -> Base64Error e -> Bool #
(PrimType ty, Eq ty) => Eq (UArray ty)
Instance details Defined in Basement.UArray.Base Methods (==) :: UArray ty -> UArray ty -> Bool # (/=) :: UArray ty -> UArray ty -> Bool #
(PrimType ty, Eq ty) => Eq (Block ty)
Instance details Defined in Basement.Block.Base Methods (==) :: Block ty -> Block ty -> Bool # (/=) :: Block ty -> Block ty -> Bool #
Eq a => Eq (NonEmpty a)
Instance details Defined in Basement.NonEmpty Methods (==) :: NonEmpty a -> NonEmpty a -> Bool # (/=) :: NonEmpty a -> NonEmpty a -> Bool #
Eq (Offset ty)
Instance details Defined in Basement.Types.OffsetSize Methods (==) :: Offset ty -> Offset ty -> Bool # (/=) :: Offset ty -> Offset ty -> Bool #
Eq (CountOf ty)
Instance details Defined in Basement.Types.OffsetSize Methods (==) :: CountOf ty -> CountOf ty -> Bool # (/=) :: CountOf ty -> CountOf ty -> Bool #
Eq (Zn64 n)
Instance details Defined in Basement.Bounded Methods (==) :: Zn64 n -> Zn64 n -> Bool # (/=) :: Zn64 n -> Zn64 n -> Bool #
Eq (Zn n)
Instance details Defined in Basement.Bounded Methods (==) :: Zn n -> Zn n -> Bool # (/=) :: Zn n -> Zn n -> Bool #
Eq s => Eq (CI s)
Instance details Defined in Data.CaseInsensitive.Internal Methods (==) :: CI s -> CI s -> Bool # (/=) :: CI s -> CI s -> Bool #
Eq a => Eq (Flush a)
Instance details Defined in Data.Conduit.Internal.Conduit Methods (==) :: Flush a -> Flush a -> Bool # (/=) :: Flush a -> Flush a -> Bool #
Eq a => Eq (IntMap a)
Instance details Defined in Data.IntMap.Internal Methods (==) :: IntMap a -> IntMap a -> Bool # (/=) :: IntMap a -> IntMap a -> Bool #
Eq vertex => Eq (SCC vertex)	Since: containers-0.5.9
Instance details Defined in Data.Graph Methods (==) :: SCC vertex -> SCC vertex -> Bool # (/=) :: SCC vertex -> SCC vertex -> Bool #
Eq a => Eq (Tree a)
Instance details Defined in Data.Tree Methods (==) :: Tree a -> Tree a -> Bool # (/=) :: Tree a -> Tree a -> Bool #
Eq a => Eq (Seq a)
Instance details Defined in Data.Sequence.Internal Methods (==) :: Seq a -> Seq a -> Bool # (/=) :: Seq a -> Seq a -> Bool #
Eq a => Eq (ViewL a)
Instance details Defined in Data.Sequence.Internal Methods (==) :: ViewL a -> ViewL a -> Bool # (/=) :: ViewL a -> ViewL a -> Bool #
Eq a => Eq (ViewR a)
Instance details Defined in Data.Sequence.Internal Methods (==) :: ViewR a -> ViewR a -> Bool # (/=) :: ViewR a -> ViewR a -> Bool #
Eq a => Eq (Set a)
Instance details Defined in Data.Set.Internal Methods (==) :: Set a -> Set a -> Bool # (/=) :: Set a -> Set a -> Bool #
Eq (Digest a)
Instance details Defined in Crypto.Hash.Types Methods (==) :: Digest a -> Digest a -> Bool # (/=) :: Digest a -> Digest a -> Bool #
Eq a => Eq (CryptoFailable a)
Instance details Defined in Crypto.Error.Types Methods (==) :: CryptoFailable a -> CryptoFailable a -> Bool # (/=) :: CryptoFailable a -> CryptoFailable a -> Bool #
Eq1 f => Eq (Fix f)
Instance details Defined in Data.Fix Methods (==) :: Fix f -> Fix f -> Bool # (/=) :: Fix f -> Fix f -> Bool #
(Functor f, Eq1 f) => Eq (Mu f)
Instance details Defined in Data.Fix Methods (==) :: Mu f -> Mu f -> Bool # (/=) :: Mu f -> Mu f -> Bool #
(Functor f, Eq1 f) => Eq (Nu f)
Instance details Defined in Data.Fix Methods (==) :: Nu f -> Nu f -> Bool # (/=) :: Nu f -> Nu f -> Bool #
Eq a => Eq (DNonEmpty a)
Instance details Defined in Data.DList.DNonEmpty.Internal Methods (==) :: DNonEmpty a -> DNonEmpty a -> Bool # (/=) :: DNonEmpty a -> DNonEmpty a -> Bool #
Eq a => Eq (DList a)
Instance details Defined in Data.DList.Internal Methods (==) :: DList a -> DList a -> Bool # (/=) :: DList a -> DList a -> Bool #
Eq a => Eq (Doc a)
Instance details Defined in Text.DocLayout Methods (==) :: Doc a -> Doc a -> Bool # (/=) :: Doc a -> Doc a -> Bool #
Eq a => Eq (Hashed a)	Uses precomputed hash to detect inequality faster
Instance details Defined in Data.Hashable.Class Methods (==) :: Hashed a -> Hashed a -> Bool # (/=) :: Hashed a -> Hashed a -> Bool #
Eq s => Eq (PosState s)
Instance details Defined in Text.Megaparsec.State Methods (==) :: PosState s -> PosState s -> Bool # (/=) :: PosState s -> PosState s -> Bool #
Eq a => Eq (AddrRange a)
Instance details Defined in Data.IP.Range Methods (==) :: AddrRange a -> AddrRange a -> Bool # (/=) :: AddrRange a -> AddrRange a -> Bool #
Eq a => Eq (Root a)
Instance details Defined in Numeric.RootFinding Methods (==) :: Root a -> Root a -> Bool # (/=) :: Root a -> Root a -> Bool #
Eq t => Eq (ErrorItem t)
Instance details Defined in Text.Megaparsec.Error Methods (==) :: ErrorItem t -> ErrorItem t -> Bool # (/=) :: ErrorItem t -> ErrorItem t -> Bool #
Eq e => Eq (ErrorFancy e)
Instance details Defined in Text.Megaparsec.Error Methods (==) :: ErrorFancy e -> ErrorFancy e -> Bool # (/=) :: ErrorFancy e -> ErrorFancy e -> Bool #
Eq mono => Eq (NonNull mono)
Instance details Defined in Data.NonNull Methods (==) :: NonNull mono -> NonNull mono -> Bool # (/=) :: NonNull mono -> NonNull mono -> Bool #
(Eq (Key record), Eq record) => Eq (Entity record)
Instance details Defined in Database.Persist.Class.PersistEntity Methods (==) :: Entity record -> Entity record -> Bool # (/=) :: Entity record -> Entity record -> Bool #
Eq (Doc a)
Instance details Defined in Text.PrettyPrint.Annotated.HughesPJ Methods (==) :: Doc a -> Doc a -> Bool # (/=) :: Doc a -> Doc a -> Bool #
Eq a => Eq (AnnotDetails a)
Instance details Defined in Text.PrettyPrint.Annotated.HughesPJ Methods (==) :: AnnotDetails a -> AnnotDetails a -> Bool # (/=) :: AnnotDetails a -> AnnotDetails a -> Bool #
Eq a => Eq (Span a)
Instance details Defined in Text.PrettyPrint.Annotated.HughesPJ Methods (==) :: Span a -> Span a -> Bool # (/=) :: Span a -> Span a -> Bool #
Eq a => Eq (CommaSeparated a)
Instance details Defined in Text.Pretty.Simple.Internal.Expr Methods (==) :: CommaSeparated a -> CommaSeparated a -> Bool # (/=) :: CommaSeparated a -> CommaSeparated a -> Bool #
Eq ann => Eq (SimpleDocStream ann)
Instance details Defined in Prettyprinter.Internal Methods (==) :: SimpleDocStream ann -> SimpleDocStream ann -> Bool # (/=) :: SimpleDocStream ann -> SimpleDocStream ann -> Bool #
(Eq a, Prim a) => Eq (PrimArray a)	Since: primitive-0.6.4.0
Instance details Defined in Data.Primitive.PrimArray Methods (==) :: PrimArray a -> PrimArray a -> Bool # (/=) :: PrimArray a -> PrimArray a -> Bool #
Eq (MutableByteArray s)
Instance details Defined in Data.Primitive.ByteArray Methods (==) :: MutableByteArray s -> MutableByteArray s -> Bool # (/=) :: MutableByteArray s -> MutableByteArray s -> Bool #
Eq a => Eq (SmallArray a)
Instance details Defined in Data.Primitive.SmallArray Methods (==) :: SmallArray a -> SmallArray a -> Bool # (/=) :: SmallArray a -> SmallArray a -> Bool #
Eq a => Eq (Array a)
Instance details Defined in Data.Primitive.Array Methods (==) :: Array a -> Array a -> Bool # (/=) :: Array a -> Array a -> Bool #
Eq g => Eq (AtomicGen g)
Instance details Defined in System.Random.Stateful Methods (==) :: AtomicGen g -> AtomicGen g -> Bool # (/=) :: AtomicGen g -> AtomicGen g -> Bool #
Eq g => Eq (IOGen g)
Instance details Defined in System.Random.Stateful Methods (==) :: IOGen g -> IOGen g -> Bool # (/=) :: IOGen g -> IOGen g -> Bool #
Eq g => Eq (STGen g)
Instance details Defined in System.Random.Stateful Methods (==) :: STGen g -> STGen g -> Bool # (/=) :: STGen g -> STGen g -> Bool #
Eq g => Eq (TGen g)
Instance details Defined in System.Random.Stateful Methods (==) :: TGen g -> TGen g -> Bool # (/=) :: TGen g -> TGen g -> Bool #
Eq g => Eq (StateGen g)
Instance details Defined in System.Random.Internal Methods (==) :: StateGen g -> StateGen g -> Bool # (/=) :: StateGen g -> StateGen g -> Bool #
Eq v => Eq (Result v)
Instance details Defined in Text.Hamlet.Parse Methods (==) :: Result v -> Result v -> Bool # (/=) :: Result v -> Result v -> Bool #
Eq a => Eq (Maybe a)
Instance details Defined in Data.Strict.Maybe Methods (==) :: Maybe a -> Maybe a -> Bool # (/=) :: Maybe a -> Maybe a -> Bool #
Eq a => Eq (HashSet a)	Note that, in the presence of hash collisions, equal `HashSet`s may behave differently, i.e. substitutivity may be violated: `>>>` `data D = A \| B deriving (Eq, Show)``>>>` `instance Hashable D where hashWithSalt salt _d = salt` `>>>` `x = fromList [A, B]``>>>` `y = fromList [B, A]` `>>>` `x == y`True `>>>` `toList x`[A,B] `>>>` `toList y`[B,A] In general, the lack of substitutivity can be observed with any function that depends on the key ordering, such as folds and traversals.
Instance details Defined in Data.HashSet.Internal Methods (==) :: HashSet a -> HashSet a -> Bool # (/=) :: HashSet a -> HashSet a -> Bool #
(Storable a, Eq a) => Eq (Vector a)
Instance details Defined in Data.Vector.Storable Methods (==) :: Vector a -> Vector a -> Bool # (/=) :: Vector a -> Vector a -> Bool #
(Prim a, Eq a) => Eq (Vector a)
Instance details Defined in Data.Vector.Primitive Methods (==) :: Vector a -> Vector a -> Bool # (/=) :: Vector a -> Vector a -> Bool #
Eq a => Eq (Vector a)
Instance details Defined in Data.Vector Methods (==) :: Vector a -> Vector a -> Bool # (/=) :: Vector a -> Vector a -> Bool #
Eq c => Eq (FileInfo c)
Instance details Defined in Network.Wai.Parse Methods (==) :: FileInfo c -> FileInfo c -> Bool # (/=) :: FileInfo c -> FileInfo c -> Bool #
Eq a => Eq (FormResult a)
Instance details Defined in Yesod.Form.Types Methods (==) :: FormResult a -> FormResult a -> Bool # (/=) :: FormResult a -> FormResult a -> Bool #
Eq (Route WaiSubsiteWithAuth)
Instance details Defined in Yesod.Core.Types Methods (==) :: Route WaiSubsiteWithAuth -> Route WaiSubsiteWithAuth -> Bool # (/=) :: Route WaiSubsiteWithAuth -> Route WaiSubsiteWithAuth -> Bool #
Eq (Route WaiSubsite)
Instance details Defined in Yesod.Core.Types Methods (==) :: Route WaiSubsite -> Route WaiSubsite -> Bool # (/=) :: Route WaiSubsite -> Route WaiSubsite -> Bool #
Eq (Route LiteApp)
Instance details Defined in Yesod.Core.Internal.LiteApp Methods (==) :: Route LiteApp -> Route LiteApp -> Bool # (/=) :: Route LiteApp -> Route LiteApp -> Bool #
Eq (Route Static)
Instance details Defined in Yesod.Static Methods (==) :: Route Static -> Route Static -> Bool # (/=) :: Route Static -> Route Static -> Bool #
Eq (Route App) Source #
Instance details Defined in Hledger.Web.Foundation Methods (==) :: Route App -> Route App -> Bool # (/=) :: Route App -> Route App -> Bool #
Eq url => Eq (Location url)
Instance details Defined in Yesod.Core.Types Methods (==) :: Location url -> Location url -> Bool # (/=) :: Location url -> Location url -> Bool #
Eq url => Eq (Script url)
Instance details Defined in Yesod.Core.Types Methods (==) :: Script url -> Script url -> Bool # (/=) :: Script url -> Script url -> Bool #
Eq url => Eq (Stylesheet url)
Instance details Defined in Yesod.Core.Types Methods (==) :: Stylesheet url -> Stylesheet url -> Bool # (/=) :: Stylesheet url -> Stylesheet url -> Bool #
Eq a => Eq (FastTree a)
Instance details Defined in Hledger.Data.Account Methods (==) :: FastTree a -> FastTree a -> Bool # (/=) :: FastTree a -> FastTree a -> Bool #
(Eq a, Eq b) => Eq (Either a b)	Since: base-2.1
Instance details Defined in Data.Either Methods (==) :: Either a b -> Either a b -> Bool # (/=) :: Either a b -> Either a b -> Bool #
Eq (V1 p)	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Methods (==) :: V1 p -> V1 p -> Bool # (/=) :: V1 p -> V1 p -> Bool #
Eq (U1 p)	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Methods (==) :: U1 p -> U1 p -> Bool # (/=) :: U1 p -> U1 p -> Bool #
Eq (TypeRep a)	Since: base-2.1
Instance details Defined in Data.Typeable.Internal Methods (==) :: TypeRep a -> TypeRep a -> Bool # (/=) :: TypeRep a -> TypeRep a -> Bool #
(Eq a, Eq b) => Eq (a, b)
Instance details Defined in GHC.Classes Methods (==) :: (a, b) -> (a, b) -> Bool # (/=) :: (a, b) -> (a, b) -> Bool #
(Eq k, Eq v) => Eq (HashMap k v)	Note that, in the presence of hash collisions, equal `HashMap`s may behave differently, i.e. substitutivity may be violated: `>>>` `data D = A \| B deriving (Eq, Show)``>>>` `instance Hashable D where hashWithSalt salt _d = salt` `>>>` `x = fromList [(A,1), (B,2)]``>>>` `y = fromList [(B,2), (A,1)]` `>>>` `x == y`True `>>>` `toList x`[(A,1),(B,2)] `>>>` `toList y`[(B,2),(A,1)] In general, the lack of substitutivity can be observed with any function that depends on the key ordering, such as folds and traversals.
Instance details Defined in Data.HashMap.Internal Methods (==) :: HashMap k v -> HashMap k v -> Bool # (/=) :: HashMap k v -> HashMap k v -> Bool #
(Eq k, Eq a) => Eq (Map k a)
Instance details Defined in Data.Map.Internal Methods (==) :: Map k a -> Map k a -> Bool # (/=) :: Map k a -> Map k a -> Bool #
(Ix i, Eq e) => Eq (Array i e)	Since: base-2.1
Instance details Defined in GHC.Arr Methods (==) :: Array i e -> Array i e -> Bool # (/=) :: Array i e -> Array i e -> Bool #
Eq (Fixed a)	Since: base-2.1
Instance details Defined in Data.Fixed Methods (==) :: Fixed a -> Fixed a -> Bool # (/=) :: Fixed a -> Fixed a -> Bool #
Eq a => Eq (Arg a b)	Since: base-4.9.0.0
Instance details Defined in Data.Semigroup Methods (==) :: Arg a b -> Arg a b -> Bool # (/=) :: Arg a b -> Arg a b -> Bool #
Eq (Proxy s)	Since: base-4.7.0.0
Instance details Defined in Data.Proxy Methods (==) :: Proxy s -> Proxy s -> Bool # (/=) :: Proxy s -> Proxy s -> Bool #
Eq (STRef s a)	Pointer equality. Since: base-2.1
Instance details Defined in GHC.STRef Methods (==) :: STRef s a -> STRef s a -> Bool # (/=) :: STRef s a -> STRef s a -> Bool #
(Eq1 m, Eq a) => Eq (MaybeT m a)
Instance details Defined in Control.Monad.Trans.Maybe Methods (==) :: MaybeT m a -> MaybeT m a -> Bool # (/=) :: MaybeT m a -> MaybeT m a -> Bool #
(Eq a, Eq1 f) => Eq (Free f a)
Instance details Defined in Control.Monad.Free Methods (==) :: Free f a -> Free f a -> Bool # (/=) :: Free f a -> Free f a -> Bool #
Eq (MutableArray s a)
Instance details Defined in Data.Primitive.Array Methods (==) :: MutableArray s a -> MutableArray s a -> Bool # (/=) :: MutableArray s a -> MutableArray s a -> Bool #
(Eq s, Eq (Token s), Eq e) => Eq (ParseErrorBundle s e)
Instance details Defined in Text.Megaparsec.Error Methods (==) :: ParseErrorBundle s e -> ParseErrorBundle s e -> Bool # (/=) :: ParseErrorBundle s e -> ParseErrorBundle s e -> Bool #
(Eq (Token s), Eq e) => Eq (ParseError s e)
Instance details Defined in Text.Megaparsec.Error Methods (==) :: ParseError s e -> ParseError s e -> Bool # (/=) :: ParseError s e -> ParseError s e -> Bool #
(Eq (ParseError s e), Eq s) => Eq (State s e)
Instance details Defined in Text.Megaparsec.State Methods (==) :: State s e -> State s e -> Bool # (/=) :: State s e -> State s e -> Bool #
(Eq1 m, Eq a) => Eq (ListT m a)
Instance details Defined in Control.Monad.Trans.List Methods (==) :: ListT m a -> ListT m a -> Bool # (/=) :: ListT m a -> ListT m a -> Bool #
Eq (MutablePrimArray s a)
Instance details Defined in Data.Primitive.PrimArray Methods (==) :: MutablePrimArray s a -> MutablePrimArray s a -> Bool # (/=) :: MutablePrimArray s a -> MutablePrimArray s a -> Bool #
Eq (SmallMutableArray s a)
Instance details Defined in Data.Primitive.SmallArray Methods (==) :: SmallMutableArray s a -> SmallMutableArray s a -> Bool # (/=) :: SmallMutableArray s a -> SmallMutableArray s a -> Bool #
(Eq a, Eq b) => Eq (Pair a b)
Instance details Defined in Data.Strict.Tuple Methods (==) :: Pair a b -> Pair a b -> Bool # (/=) :: Pair a b -> Pair a b -> Bool #
(Eq a, Eq b) => Eq (These a b)
Instance details Defined in Data.Strict.These Methods (==) :: These a b -> These a b -> Bool # (/=) :: These a b -> These a b -> Bool #
(Eq a, Eq b) => Eq (Either a b)
Instance details Defined in Data.Strict.Either Methods (==) :: Either a b -> Either a b -> Bool # (/=) :: Either a b -> Either a b -> Bool #
(Eq a, Eq b) => Eq (These a b)
Instance details Defined in Data.These Methods (==) :: These a b -> These a b -> Bool # (/=) :: These a b -> These a b -> Bool #
(Eq k, Eq v) => Eq (Leaf k v)
Instance details Defined in Data.HashMap.Internal Methods (==) :: Leaf k v -> Leaf k v -> Bool # (/=) :: Leaf k v -> Leaf k v -> Bool #
Eq (f p) => Eq (Rec1 f p)	Since: base-4.7.0.0
Instance details Defined in GHC.Generics Methods (==) :: Rec1 f p -> Rec1 f p -> Bool # (/=) :: Rec1 f p -> Rec1 f p -> Bool #
Eq (URec (Ptr ()) p)	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Methods (==) :: URec (Ptr ()) p -> URec (Ptr ()) p -> Bool # (/=) :: URec (Ptr ()) p -> URec (Ptr ()) p -> Bool #
Eq (URec Char p)	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Methods (==) :: URec Char p -> URec Char p -> Bool # (/=) :: URec Char p -> URec Char p -> Bool #
Eq (URec Double p)	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Methods (==) :: URec Double p -> URec Double p -> Bool # (/=) :: URec Double p -> URec Double p -> Bool #
Eq (URec Float p)
Instance details Defined in GHC.Generics Methods (==) :: URec Float p -> URec Float p -> Bool # (/=) :: URec Float p -> URec Float p -> Bool #
Eq (URec Int p)	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Methods (==) :: URec Int p -> URec Int p -> Bool # (/=) :: URec Int p -> URec Int p -> Bool #
Eq (URec Word p)	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Methods (==) :: URec Word p -> URec Word p -> Bool # (/=) :: URec Word p -> URec Word p -> Bool #
(Eq a, Eq b, Eq c) => Eq (a, b, c)
Instance details Defined in GHC.Classes Methods (==) :: (a, b, c) -> (a, b, c) -> Bool # (/=) :: (a, b, c) -> (a, b, c) -> Bool #
Eq (STArray s i e)	Since: base-2.1
Instance details Defined in GHC.Arr Methods (==) :: STArray s i e -> STArray s i e -> Bool # (/=) :: STArray s i e -> STArray s i e -> Bool #
Eq a => Eq (Const a b)	Since: base-4.9.0.0
Instance details Defined in Data.Functor.Const Methods (==) :: Const a b -> Const a b -> Bool # (/=) :: Const a b -> Const a b -> Bool #
Eq (f a) => Eq (Ap f a)	Since: base-4.12.0.0
Instance details Defined in Data.Monoid Methods (==) :: Ap f a -> Ap f a -> Bool # (/=) :: Ap f a -> Ap f a -> Bool #
Eq (f a) => Eq (Alt f a)	Since: base-4.8.0.0
Instance details Defined in Data.Semigroup.Internal Methods (==) :: Alt f a -> Alt f a -> Bool # (/=) :: Alt f a -> Alt f a -> Bool #
(Eq1 f, Eq a) => Eq (IdentityT f a)
Instance details Defined in Control.Monad.Trans.Identity Methods (==) :: IdentityT f a -> IdentityT f a -> Bool # (/=) :: IdentityT f a -> IdentityT f a -> Bool #
(Eq w, Eq1 m, Eq a) => Eq (WriterT w m a)
Instance details Defined in Control.Monad.Trans.Writer.Strict Methods (==) :: WriterT w m a -> WriterT w m a -> Bool # (/=) :: WriterT w m a -> WriterT w m a -> Bool #
(Eq w, Eq1 m, Eq a) => Eq (WriterT w m a)
Instance details Defined in Control.Monad.Trans.Writer.Lazy Methods (==) :: WriterT w m a -> WriterT w m a -> Bool # (/=) :: WriterT w m a -> WriterT w m a -> Bool #
(Eq e, Eq1 m, Eq a) => Eq (ExceptT e m a)
Instance details Defined in Control.Monad.Trans.Except Methods (==) :: ExceptT e m a -> ExceptT e m a -> Bool # (/=) :: ExceptT e m a -> ExceptT e m a -> Bool #
(Eq e, Eq1 m, Eq a) => Eq (ErrorT e m a)
Instance details Defined in Control.Monad.Trans.Error Methods (==) :: ErrorT e m a -> ErrorT e m a -> Bool # (/=) :: ErrorT e m a -> ErrorT e m a -> Bool #
Eq b => Eq (Tagged s b)
Instance details Defined in Data.Tagged Methods (==) :: Tagged s b -> Tagged s b -> Bool # (/=) :: Tagged s b -> Tagged s b -> Bool #
(Eq1 f, Eq1 g, Eq a) => Eq (These1 f g a)
Instance details Defined in Data.Functor.These Methods (==) :: These1 f g a -> These1 f g a -> Bool # (/=) :: These1 f g a -> These1 f g a -> Bool #
Eq c => Eq (K1 i c p)	Since: base-4.7.0.0
Instance details Defined in GHC.Generics Methods (==) :: K1 i c p -> K1 i c p -> Bool # (/=) :: K1 i c p -> K1 i c p -> Bool #
(Eq (f p), Eq (g p)) => Eq ((f :+: g) p)	Since: base-4.7.0.0
Instance details Defined in GHC.Generics Methods (==) :: (f :+: g) p -> (f :+: g) p -> Bool # (/=) :: (f :+: g) p -> (f :+: g) p -> Bool #
(Eq (f p), Eq (g p)) => Eq ((f :*: g) p)	Since: base-4.7.0.0
Instance details Defined in GHC.Generics Methods (==) :: (f :: g) p -> (f :: g) p -> Bool # (/=) :: (f :: g) p -> (f :: g) p -> Bool #
(Eq a, Eq b, Eq c, Eq d) => Eq (a, b, c, d)
Instance details Defined in GHC.Classes Methods (==) :: (a, b, c, d) -> (a, b, c, d) -> Bool # (/=) :: (a, b, c, d) -> (a, b, c, d) -> Bool #
(Eq1 f, Eq1 g, Eq a) => Eq (Product f g a)	Since: base-4.9.0.0
Instance details Defined in Data.Functor.Product Methods (==) :: Product f g a -> Product f g a -> Bool # (/=) :: Product f g a -> Product f g a -> Bool #
(Eq1 f, Eq1 g, Eq a) => Eq (Sum f g a)	Since: base-4.9.0.0
Instance details Defined in Data.Functor.Sum Methods (==) :: Sum f g a -> Sum f g a -> Bool # (/=) :: Sum f g a -> Sum f g a -> Bool #
Eq (f p) => Eq (M1 i c f p)	Since: base-4.7.0.0
Instance details Defined in GHC.Generics Methods (==) :: M1 i c f p -> M1 i c f p -> Bool # (/=) :: M1 i c f p -> M1 i c f p -> Bool #
Eq (f (g p)) => Eq ((f :.: g) p)	Since: base-4.7.0.0
Instance details Defined in GHC.Generics Methods (==) :: (f :.: g) p -> (f :.: g) p -> Bool # (/=) :: (f :.: g) p -> (f :.: g) p -> Bool #
(Eq a, Eq b, Eq c, Eq d, Eq e) => Eq (a, b, c, d, e)
Instance details Defined in GHC.Classes Methods (==) :: (a, b, c, d, e) -> (a, b, c, d, e) -> Bool # (/=) :: (a, b, c, d, e) -> (a, b, c, d, e) -> Bool #
(Eq1 f, Eq1 g, Eq a) => Eq (Compose f g a)	Since: base-4.9.0.0
Instance details Defined in Data.Functor.Compose Methods (==) :: Compose f g a -> Compose f g a -> Bool # (/=) :: Compose f g a -> Compose f g a -> Bool #
Eq (p b a) => Eq (Flip p a b)
Instance details Defined in Data.Bifunctor.Flip Methods (==) :: Flip p a b -> Flip p a b -> Bool # (/=) :: Flip p a b -> Flip p a b -> Bool #
(Eq a, Eq b, Eq c, Eq d, Eq e, Eq f) => Eq (a, b, c, d, e, f)
Instance details Defined in GHC.Classes Methods (==) :: (a, b, c, d, e, f) -> (a, b, c, d, e, f) -> Bool # (/=) :: (a, b, c, d, e, f) -> (a, b, c, d, e, f) -> Bool #
(Eq (p a b), Eq (q a b)) => Eq (Sum p q a b)
Instance details Defined in Data.Bifunctor.Sum Methods (==) :: Sum p q a b -> Sum p q a b -> Bool # (/=) :: Sum p q a b -> Sum p q a b -> Bool #
(Eq (f a b), Eq (g a b)) => Eq (Product f g a b)
Instance details Defined in Data.Bifunctor.Product Methods (==) :: Product f g a b -> Product f g a b -> Bool # (/=) :: Product f g a b -> Product f g a b -> Bool #
(Eq a, Eq b, Eq c, Eq d, Eq e, Eq f, Eq g) => Eq (a, b, c, d, e, f, g)
Instance details Defined in GHC.Classes Methods (==) :: (a, b, c, d, e, f, g) -> (a, b, c, d, e, f, g) -> Bool # (/=) :: (a, b, c, d, e, f, g) -> (a, b, c, d, e, f, g) -> Bool #
Eq (f (p a b)) => Eq (Tannen f p a b)
Instance details Defined in Data.Bifunctor.Tannen Methods (==) :: Tannen f p a b -> Tannen f p a b -> Bool # (/=) :: Tannen f p a b -> Tannen f p a b -> Bool #
(Eq a, Eq b, Eq c, Eq d, Eq e, Eq f, Eq g, Eq h) => Eq (a, b, c, d, e, f, g, h)
Instance details Defined in GHC.Classes Methods (==) :: (a, b, c, d, e, f, g, h) -> (a, b, c, d, e, f, g, h) -> Bool # (/=) :: (a, b, c, d, e, f, g, h) -> (a, b, c, d, e, f, g, h) -> Bool #
(Eq a, Eq b, Eq c, Eq d, Eq e, Eq f, Eq g, Eq h, Eq i) => Eq (a, b, c, d, e, f, g, h, i)
Instance details Defined in GHC.Classes Methods (==) :: (a, b, c, d, e, f, g, h, i) -> (a, b, c, d, e, f, g, h, i) -> Bool # (/=) :: (a, b, c, d, e, f, g, h, i) -> (a, b, c, d, e, f, g, h, i) -> Bool #
Eq (p (f a) (g b)) => Eq (Biff p f g a b)
Instance details Defined in Data.Bifunctor.Biff Methods (==) :: Biff p f g a b -> Biff p f g a b -> Bool # (/=) :: Biff p f g a b -> Biff p f g a b -> Bool #
(Eq a, Eq b, Eq c, Eq d, Eq e, Eq f, Eq g, Eq h, Eq i, Eq j) => Eq (a, b, c, d, e, f, g, h, i, j)
Instance details Defined in GHC.Classes Methods (==) :: (a, b, c, d, e, f, g, h, i, j) -> (a, b, c, d, e, f, g, h, i, j) -> Bool # (/=) :: (a, b, c, d, e, f, g, h, i, j) -> (a, b, c, d, e, f, g, h, i, j) -> Bool #
(Eq a, Eq b, Eq c, Eq d, Eq e, Eq f, Eq g, Eq h, Eq i, Eq j, Eq k) => Eq (a, b, c, d, e, f, g, h, i, j, k)
Instance details Defined in GHC.Classes Methods (==) :: (a, b, c, d, e, f, g, h, i, j, k) -> (a, b, c, d, e, f, g, h, i, j, k) -> Bool # (/=) :: (a, b, c, d, e, f, g, h, i, j, k) -> (a, b, c, d, e, f, g, h, i, j, k) -> Bool #
(Eq a, Eq b, Eq c, Eq d, Eq e, Eq f, Eq g, Eq h, Eq i, Eq j, Eq k, Eq l) => Eq (a, b, c, d, e, f, g, h, i, j, k, l)
Instance details Defined in GHC.Classes Methods (==) :: (a, b, c, d, e, f, g, h, i, j, k, l) -> (a, b, c, d, e, f, g, h, i, j, k, l) -> Bool # (/=) :: (a, b, c, d, e, f, g, h, i, j, k, l) -> (a, b, c, d, e, f, g, h, i, j, k, l) -> Bool #
(Eq a, Eq b, Eq c, Eq d, Eq e, Eq f, Eq g, Eq h, Eq i, Eq j, Eq k, Eq l, Eq m) => Eq (a, b, c, d, e, f, g, h, i, j, k, l, m)
Instance details Defined in GHC.Classes Methods (==) :: (a, b, c, d, e, f, g, h, i, j, k, l, m) -> (a, b, c, d, e, f, g, h, i, j, k, l, m) -> Bool # (/=) :: (a, b, c, d, e, f, g, h, i, j, k, l, m) -> (a, b, c, d, e, f, g, h, i, j, k, l, m) -> Bool #
(Eq a, Eq b, Eq c, Eq d, Eq e, Eq f, Eq g, Eq h, Eq i, Eq j, Eq k, Eq l, Eq m, Eq n) => Eq (a, b, c, d, e, f, g, h, i, j, k, l, m, n)
Instance details Defined in GHC.Classes Methods (==) :: (a, b, c, d, e, f, g, h, i, j, k, l, m, n) -> (a, b, c, d, e, f, g, h, i, j, k, l, m, n) -> Bool # (/=) :: (a, b, c, d, e, f, g, h, i, j, k, l, m, n) -> (a, b, c, d, e, f, g, h, i, j, k, l, m, n) -> Bool #
(Eq a, Eq b, Eq c, Eq d, Eq e, Eq f, Eq g, Eq h, Eq i, Eq j, Eq k, Eq l, Eq m, Eq n, Eq o) => Eq (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o)
Instance details Defined in GHC.Classes Methods (==) :: (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o) -> (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o) -> Bool # (/=) :: (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o) -> (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o) -> Bool #

class Fractional a => Floating a where #

Trigonometric and hyperbolic functions and related functions.

The Haskell Report defines no laws for Floating. However, (+), (*) and exp are customarily expected to define an exponential field and have the following properties:

exp (a + b) = exp a * exp b
exp (fromInteger 0) = fromInteger 1

Minimal complete definition

pi, exp, log, sin, cos, asin, acos, atan, sinh, cosh, asinh, acosh, atanh

Methods

pi :: a #

exp :: a -> a #

log :: a -> a #

sqrt :: a -> a #

(**) :: a -> a -> a infixr 8 #

logBase :: a -> a -> a #

sin :: a -> a #

cos :: a -> a #

tan :: a -> a #

asin :: a -> a #

acos :: a -> a #

atan :: a -> a #

sinh :: a -> a #

cosh :: a -> a #

tanh :: a -> a #

asinh :: a -> a #

acosh :: a -> a #

atanh :: a -> a #

Instances

Instances details

Floating Double	Since: base-2.1
Instance details Defined in GHC.Float Methods pi :: Double # exp :: Double -> Double # log :: Double -> Double # sqrt :: Double -> Double # (**) :: Double -> Double -> Double # logBase :: Double -> Double -> Double # sin :: Double -> Double # cos :: Double -> Double # tan :: Double -> Double # asin :: Double -> Double # acos :: Double -> Double # atan :: Double -> Double # sinh :: Double -> Double # cosh :: Double -> Double # tanh :: Double -> Double # asinh :: Double -> Double # acosh :: Double -> Double # atanh :: Double -> Double # log1p :: Double -> Double # expm1 :: Double -> Double # log1pexp :: Double -> Double # log1mexp :: Double -> Double #
Floating Float	Since: base-2.1
Instance details Defined in GHC.Float Methods pi :: Float # exp :: Float -> Float # log :: Float -> Float # sqrt :: Float -> Float # (**) :: Float -> Float -> Float # logBase :: Float -> Float -> Float # sin :: Float -> Float # cos :: Float -> Float # tan :: Float -> Float # asin :: Float -> Float # acos :: Float -> Float # atan :: Float -> Float # sinh :: Float -> Float # cosh :: Float -> Float # tanh :: Float -> Float # asinh :: Float -> Float # acosh :: Float -> Float # atanh :: Float -> Float # log1p :: Float -> Float # expm1 :: Float -> Float # log1pexp :: Float -> Float # log1mexp :: Float -> Float #
Floating CFloat
Instance details Defined in Foreign.C.Types Methods pi :: CFloat # exp :: CFloat -> CFloat # log :: CFloat -> CFloat # sqrt :: CFloat -> CFloat # (**) :: CFloat -> CFloat -> CFloat # logBase :: CFloat -> CFloat -> CFloat # sin :: CFloat -> CFloat # cos :: CFloat -> CFloat # tan :: CFloat -> CFloat # asin :: CFloat -> CFloat # acos :: CFloat -> CFloat # atan :: CFloat -> CFloat # sinh :: CFloat -> CFloat # cosh :: CFloat -> CFloat # tanh :: CFloat -> CFloat # asinh :: CFloat -> CFloat # acosh :: CFloat -> CFloat # atanh :: CFloat -> CFloat # log1p :: CFloat -> CFloat # expm1 :: CFloat -> CFloat # log1pexp :: CFloat -> CFloat # log1mexp :: CFloat -> CFloat #
Floating CDouble
Instance details Defined in Foreign.C.Types Methods pi :: CDouble # exp :: CDouble -> CDouble # log :: CDouble -> CDouble # sqrt :: CDouble -> CDouble # (**) :: CDouble -> CDouble -> CDouble # logBase :: CDouble -> CDouble -> CDouble # sin :: CDouble -> CDouble # cos :: CDouble -> CDouble # tan :: CDouble -> CDouble # asin :: CDouble -> CDouble # acos :: CDouble -> CDouble # atan :: CDouble -> CDouble # sinh :: CDouble -> CDouble # cosh :: CDouble -> CDouble # tanh :: CDouble -> CDouble # asinh :: CDouble -> CDouble # acosh :: CDouble -> CDouble # atanh :: CDouble -> CDouble # log1p :: CDouble -> CDouble # expm1 :: CDouble -> CDouble # log1pexp :: CDouble -> CDouble # log1mexp :: CDouble -> CDouble #
RealFloat a => Floating (Complex a)	Since: base-2.1
Instance details Defined in Data.Complex Methods pi :: Complex a # exp :: Complex a -> Complex a # log :: Complex a -> Complex a # sqrt :: Complex a -> Complex a # (**) :: Complex a -> Complex a -> Complex a # logBase :: Complex a -> Complex a -> Complex a # sin :: Complex a -> Complex a # cos :: Complex a -> Complex a # tan :: Complex a -> Complex a # asin :: Complex a -> Complex a # acos :: Complex a -> Complex a # atan :: Complex a -> Complex a # sinh :: Complex a -> Complex a # cosh :: Complex a -> Complex a # tanh :: Complex a -> Complex a # asinh :: Complex a -> Complex a # acosh :: Complex a -> Complex a # atanh :: Complex a -> Complex a # log1p :: Complex a -> Complex a # expm1 :: Complex a -> Complex a # log1pexp :: Complex a -> Complex a # log1mexp :: Complex a -> Complex a #
Floating a => Floating (Identity a)	Since: base-4.9.0.0
Instance details Defined in Data.Functor.Identity Methods pi :: Identity a # exp :: Identity a -> Identity a # log :: Identity a -> Identity a # sqrt :: Identity a -> Identity a # (**) :: Identity a -> Identity a -> Identity a # logBase :: Identity a -> Identity a -> Identity a # sin :: Identity a -> Identity a # cos :: Identity a -> Identity a # tan :: Identity a -> Identity a # asin :: Identity a -> Identity a # acos :: Identity a -> Identity a # atan :: Identity a -> Identity a # sinh :: Identity a -> Identity a # cosh :: Identity a -> Identity a # tanh :: Identity a -> Identity a # asinh :: Identity a -> Identity a # acosh :: Identity a -> Identity a # atanh :: Identity a -> Identity a # log1p :: Identity a -> Identity a # expm1 :: Identity a -> Identity a # log1pexp :: Identity a -> Identity a # log1mexp :: Identity a -> Identity a #
Floating a => Floating (Down a)	Since: base-4.14.0.0
Instance details Defined in Data.Ord Methods pi :: Down a # exp :: Down a -> Down a # log :: Down a -> Down a # sqrt :: Down a -> Down a # (**) :: Down a -> Down a -> Down a # logBase :: Down a -> Down a -> Down a # sin :: Down a -> Down a # cos :: Down a -> Down a # tan :: Down a -> Down a # asin :: Down a -> Down a # acos :: Down a -> Down a # atan :: Down a -> Down a # sinh :: Down a -> Down a # cosh :: Down a -> Down a # tanh :: Down a -> Down a # asinh :: Down a -> Down a # acosh :: Down a -> Down a # atanh :: Down a -> Down a # log1p :: Down a -> Down a # expm1 :: Down a -> Down a # log1pexp :: Down a -> Down a # log1mexp :: Down a -> Down a #
Floating a => Floating (Const a b)	Since: base-4.9.0.0
Instance details Defined in Data.Functor.Const Methods pi :: Const a b # exp :: Const a b -> Const a b # log :: Const a b -> Const a b # sqrt :: Const a b -> Const a b # (**) :: Const a b -> Const a b -> Const a b # logBase :: Const a b -> Const a b -> Const a b # sin :: Const a b -> Const a b # cos :: Const a b -> Const a b # tan :: Const a b -> Const a b # asin :: Const a b -> Const a b # acos :: Const a b -> Const a b # atan :: Const a b -> Const a b # sinh :: Const a b -> Const a b # cosh :: Const a b -> Const a b # tanh :: Const a b -> Const a b # asinh :: Const a b -> Const a b # acosh :: Const a b -> Const a b # atanh :: Const a b -> Const a b # log1p :: Const a b -> Const a b # expm1 :: Const a b -> Const a b # log1pexp :: Const a b -> Const a b # log1mexp :: Const a b -> Const a b #
Floating a => Floating (Tagged s a)
Instance details Defined in Data.Tagged Methods pi :: Tagged s a # exp :: Tagged s a -> Tagged s a # log :: Tagged s a -> Tagged s a # sqrt :: Tagged s a -> Tagged s a # (**) :: Tagged s a -> Tagged s a -> Tagged s a # logBase :: Tagged s a -> Tagged s a -> Tagged s a # sin :: Tagged s a -> Tagged s a # cos :: Tagged s a -> Tagged s a # tan :: Tagged s a -> Tagged s a # asin :: Tagged s a -> Tagged s a # acos :: Tagged s a -> Tagged s a # atan :: Tagged s a -> Tagged s a # sinh :: Tagged s a -> Tagged s a # cosh :: Tagged s a -> Tagged s a # tanh :: Tagged s a -> Tagged s a # asinh :: Tagged s a -> Tagged s a # acosh :: Tagged s a -> Tagged s a # atanh :: Tagged s a -> Tagged s a # log1p :: Tagged s a -> Tagged s a # expm1 :: Tagged s a -> Tagged s a # log1pexp :: Tagged s a -> Tagged s a # log1mexp :: Tagged s a -> Tagged s a #

class Num a => Fractional a where #

Fractional numbers, supporting real division.

The Haskell Report defines no laws for Fractional. However, (+) and (*) are customarily expected to define a division ring and have the following properties:

recip gives the multiplicative inverse: x * recip x = recip x * x = fromInteger 1

Note that it isn't customarily expected that a type instance of Fractional implement a field. However, all instances in base do.

Minimal complete definition

fromRational, (recip | (/))

Methods

(/) :: a -> a -> a infixl 7 #

Fractional division.

recip :: a -> a #

Reciprocal fraction.

fromRational :: Rational -> a #

Conversion from a Rational (that is Ratio Integer). A floating literal stands for an application of fromRational to a value of type Rational, so such literals have type (Fractional a) => a.

Instances

Instances details

Fractional Scientific	WARNING: `recip` and `/` will throw an error when their outputs are repeating decimals. These methods also compute `Integer` magnitudes (`10^e`). If these methods are applied to arguments which have huge exponents this could fill up all space and crash your program! So don't apply these methods to scientific numbers coming from untrusted sources. `fromRational` will throw an error when the input `Rational` is a repeating decimal. Consider using `fromRationalRepetend` for these rationals which will detect the repetition and indicate where it starts.
Instance details Defined in Data.Scientific Methods (/) :: Scientific -> Scientific -> Scientific # recip :: Scientific -> Scientific # fromRational :: Rational -> Scientific #
Fractional CFloat
Instance details Defined in Foreign.C.Types Methods (/) :: CFloat -> CFloat -> CFloat # recip :: CFloat -> CFloat # fromRational :: Rational -> CFloat #
Fractional CDouble
Instance details Defined in Foreign.C.Types Methods (/) :: CDouble -> CDouble -> CDouble # recip :: CDouble -> CDouble # fromRational :: Rational -> CDouble #
Fractional PixelSize
Instance details Defined in Text.Internal.CssCommon Methods (/) :: PixelSize -> PixelSize -> PixelSize # recip :: PixelSize -> PixelSize # fromRational :: Rational -> PixelSize #
Fractional ExSize
Instance details Defined in Text.Internal.CssCommon Methods (/) :: ExSize -> ExSize -> ExSize # recip :: ExSize -> ExSize # fromRational :: Rational -> ExSize #
Fractional EmSize
Instance details Defined in Text.Internal.CssCommon Methods (/) :: EmSize -> EmSize -> EmSize # recip :: EmSize -> EmSize # fromRational :: Rational -> EmSize #
Fractional AbsoluteSize
Instance details Defined in Text.Internal.CssCommon Methods (/) :: AbsoluteSize -> AbsoluteSize -> AbsoluteSize # recip :: AbsoluteSize -> AbsoluteSize # fromRational :: Rational -> AbsoluteSize #
Fractional PercentageSize
Instance details Defined in Text.Internal.CssCommon Methods (/) :: PercentageSize -> PercentageSize -> PercentageSize # recip :: PercentageSize -> PercentageSize # fromRational :: Rational -> PercentageSize #
Fractional NominalDiffTime
Instance details Defined in Data.Time.Clock.Internal.NominalDiffTime Methods (/) :: NominalDiffTime -> NominalDiffTime -> NominalDiffTime # recip :: NominalDiffTime -> NominalDiffTime # fromRational :: Rational -> NominalDiffTime #
Fractional DiffTime
Instance details Defined in Data.Time.Clock.Internal.DiffTime Methods (/) :: DiffTime -> DiffTime -> DiffTime # recip :: DiffTime -> DiffTime # fromRational :: Rational -> DiffTime #
Integral a => Fractional (Ratio a)	Since: base-2.0.1
Instance details Defined in GHC.Real Methods (/) :: Ratio a -> Ratio a -> Ratio a # recip :: Ratio a -> Ratio a # fromRational :: Rational -> Ratio a #
Integral i => Fractional (DecimalRaw i)
Instance details Defined in Data.Decimal Methods (/) :: DecimalRaw i -> DecimalRaw i -> DecimalRaw i # recip :: DecimalRaw i -> DecimalRaw i # fromRational :: Rational -> DecimalRaw i #
RealFloat a => Fractional (Complex a)	Since: base-2.1
Instance details Defined in Data.Complex Methods (/) :: Complex a -> Complex a -> Complex a # recip :: Complex a -> Complex a # fromRational :: Rational -> Complex a #
Fractional a => Fractional (Identity a)	Since: base-4.9.0.0
Instance details Defined in Data.Functor.Identity Methods (/) :: Identity a -> Identity a -> Identity a # recip :: Identity a -> Identity a # fromRational :: Rational -> Identity a #
Fractional a => Fractional (Down a)	Since: base-4.14.0.0
Instance details Defined in Data.Ord Methods (/) :: Down a -> Down a -> Down a # recip :: Down a -> Down a # fromRational :: Rational -> Down a #
HasResolution a => Fractional (Fixed a)	Since: base-2.1
Instance details Defined in Data.Fixed Methods (/) :: Fixed a -> Fixed a -> Fixed a # recip :: Fixed a -> Fixed a # fromRational :: Rational -> Fixed a #
Fractional a => Fractional (Const a b)	Since: base-4.9.0.0
Instance details Defined in Data.Functor.Const Methods (/) :: Const a b -> Const a b -> Const a b # recip :: Const a b -> Const a b # fromRational :: Rational -> Const a b #
Fractional a => Fractional (Tagged s a)
Instance details Defined in Data.Tagged Methods (/) :: Tagged s a -> Tagged s a -> Tagged s a # recip :: Tagged s a -> Tagged s a # fromRational :: Rational -> Tagged s a #

class (Real a, Enum a) => Integral a where #

Integral numbers, supporting integer division.

The Haskell Report defines no laws for Integral. However, Integral instances are customarily expected to define a Euclidean domain and have the following properties for the div/mod and quot/rem pairs, given suitable Euclidean functions f and g:

x = y * quot x y + rem x y with rem x y = fromInteger 0 or g (rem x y) < g y
x = y * div x y + mod x y with mod x y = fromInteger 0 or f (mod x y) < f y

An example of a suitable Euclidean function, for Integer's instance, is abs.

Minimal complete definition

quotRem, toInteger

Methods

quot :: a -> a -> a infixl 7 #

integer division truncated toward zero

rem :: a -> a -> a infixl 7 #

integer remainder, satisfying

(x `quot` y)*y + (x `rem` y) == x

div :: a -> a -> a infixl 7 #

integer division truncated toward negative infinity

mod :: a -> a -> a infixl 7 #

integer modulus, satisfying

(x `div` y)*y + (x `mod` y) == x

quotRem :: a -> a -> (a, a) #

simultaneous quot and rem

divMod :: a -> a -> (a, a) #

simultaneous div and mod

toInteger :: a -> Integer #

conversion to Integer

Instances

Instances details

Integral Int	Since: base-2.0.1
Instance details Defined in GHC.Real Methods quot :: Int -> Int -> Int # rem :: Int -> Int -> Int # div :: Int -> Int -> Int # mod :: Int -> Int -> Int # quotRem :: Int -> Int -> (Int, Int) # divMod :: Int -> Int -> (Int, Int) # toInteger :: Int -> Integer #
Integral Int8	Since: base-2.1
Instance details Defined in GHC.Int Methods quot :: Int8 -> Int8 -> Int8 # rem :: Int8 -> Int8 -> Int8 # div :: Int8 -> Int8 -> Int8 # mod :: Int8 -> Int8 -> Int8 # quotRem :: Int8 -> Int8 -> (Int8, Int8) # divMod :: Int8 -> Int8 -> (Int8, Int8) # toInteger :: Int8 -> Integer #
Integral Int16	Since: base-2.1
Instance details Defined in GHC.Int Methods quot :: Int16 -> Int16 -> Int16 # rem :: Int16 -> Int16 -> Int16 # div :: Int16 -> Int16 -> Int16 # mod :: Int16 -> Int16 -> Int16 # quotRem :: Int16 -> Int16 -> (Int16, Int16) # divMod :: Int16 -> Int16 -> (Int16, Int16) # toInteger :: Int16 -> Integer #
Integral Int32	Since: base-2.1
Instance details Defined in GHC.Int Methods quot :: Int32 -> Int32 -> Int32 # rem :: Int32 -> Int32 -> Int32 # div :: Int32 -> Int32 -> Int32 # mod :: Int32 -> Int32 -> Int32 # quotRem :: Int32 -> Int32 -> (Int32, Int32) # divMod :: Int32 -> Int32 -> (Int32, Int32) # toInteger :: Int32 -> Integer #
Integral Int64	Since: base-2.1
Instance details Defined in GHC.Int Methods quot :: Int64 -> Int64 -> Int64 # rem :: Int64 -> Int64 -> Int64 # div :: Int64 -> Int64 -> Int64 # mod :: Int64 -> Int64 -> Int64 # quotRem :: Int64 -> Int64 -> (Int64, Int64) # divMod :: Int64 -> Int64 -> (Int64, Int64) # toInteger :: Int64 -> Integer #
Integral Integer	Since: base-2.0.1
Instance details Defined in GHC.Real Methods quot :: Integer -> Integer -> Integer # rem :: Integer -> Integer -> Integer # div :: Integer -> Integer -> Integer # mod :: Integer -> Integer -> Integer # quotRem :: Integer -> Integer -> (Integer, Integer) # divMod :: Integer -> Integer -> (Integer, Integer) # toInteger :: Integer -> Integer #
Integral Natural	Since: base-4.8.0.0
Instance details Defined in GHC.Real Methods quot :: Natural -> Natural -> Natural # rem :: Natural -> Natural -> Natural # div :: Natural -> Natural -> Natural # mod :: Natural -> Natural -> Natural # quotRem :: Natural -> Natural -> (Natural, Natural) # divMod :: Natural -> Natural -> (Natural, Natural) # toInteger :: Natural -> Integer #
Integral Word	Since: base-2.1
Instance details Defined in GHC.Real Methods quot :: Word -> Word -> Word # rem :: Word -> Word -> Word # div :: Word -> Word -> Word # mod :: Word -> Word -> Word # quotRem :: Word -> Word -> (Word, Word) # divMod :: Word -> Word -> (Word, Word) # toInteger :: Word -> Integer #
Integral Word8	Since: base-2.1
Instance details Defined in GHC.Word Methods quot :: Word8 -> Word8 -> Word8 # rem :: Word8 -> Word8 -> Word8 # div :: Word8 -> Word8 -> Word8 # mod :: Word8 -> Word8 -> Word8 # quotRem :: Word8 -> Word8 -> (Word8, Word8) # divMod :: Word8 -> Word8 -> (Word8, Word8) # toInteger :: Word8 -> Integer #
Integral Word16	Since: base-2.1
Instance details Defined in GHC.Word Methods quot :: Word16 -> Word16 -> Word16 # rem :: Word16 -> Word16 -> Word16 # div :: Word16 -> Word16 -> Word16 # mod :: Word16 -> Word16 -> Word16 # quotRem :: Word16 -> Word16 -> (Word16, Word16) # divMod :: Word16 -> Word16 -> (Word16, Word16) # toInteger :: Word16 -> Integer #
Integral Word32	Since: base-2.1
Instance details Defined in GHC.Word Methods quot :: Word32 -> Word32 -> Word32 # rem :: Word32 -> Word32 -> Word32 # div :: Word32 -> Word32 -> Word32 # mod :: Word32 -> Word32 -> Word32 # quotRem :: Word32 -> Word32 -> (Word32, Word32) # divMod :: Word32 -> Word32 -> (Word32, Word32) # toInteger :: Word32 -> Integer #
Integral Word64	Since: base-2.1
Instance details Defined in GHC.Word Methods quot :: Word64 -> Word64 -> Word64 # rem :: Word64 -> Word64 -> Word64 # div :: Word64 -> Word64 -> Word64 # mod :: Word64 -> Word64 -> Word64 # quotRem :: Word64 -> Word64 -> (Word64, Word64) # divMod :: Word64 -> Word64 -> (Word64, Word64) # toInteger :: Word64 -> Integer #
Integral CChar
Instance details Defined in Foreign.C.Types Methods quot :: CChar -> CChar -> CChar # rem :: CChar -> CChar -> CChar # div :: CChar -> CChar -> CChar # mod :: CChar -> CChar -> CChar # quotRem :: CChar -> CChar -> (CChar, CChar) # divMod :: CChar -> CChar -> (CChar, CChar) # toInteger :: CChar -> Integer #
Integral CSChar
Instance details Defined in Foreign.C.Types Methods quot :: CSChar -> CSChar -> CSChar # rem :: CSChar -> CSChar -> CSChar # div :: CSChar -> CSChar -> CSChar # mod :: CSChar -> CSChar -> CSChar # quotRem :: CSChar -> CSChar -> (CSChar, CSChar) # divMod :: CSChar -> CSChar -> (CSChar, CSChar) # toInteger :: CSChar -> Integer #
Integral CUChar
Instance details Defined in Foreign.C.Types Methods quot :: CUChar -> CUChar -> CUChar # rem :: CUChar -> CUChar -> CUChar # div :: CUChar -> CUChar -> CUChar # mod :: CUChar -> CUChar -> CUChar # quotRem :: CUChar -> CUChar -> (CUChar, CUChar) # divMod :: CUChar -> CUChar -> (CUChar, CUChar) # toInteger :: CUChar -> Integer #
Integral CShort
Instance details Defined in Foreign.C.Types Methods quot :: CShort -> CShort -> CShort # rem :: CShort -> CShort -> CShort # div :: CShort -> CShort -> CShort # mod :: CShort -> CShort -> CShort # quotRem :: CShort -> CShort -> (CShort, CShort) # divMod :: CShort -> CShort -> (CShort, CShort) # toInteger :: CShort -> Integer #
Integral CUShort
Instance details Defined in Foreign.C.Types Methods quot :: CUShort -> CUShort -> CUShort # rem :: CUShort -> CUShort -> CUShort # div :: CUShort -> CUShort -> CUShort # mod :: CUShort -> CUShort -> CUShort # quotRem :: CUShort -> CUShort -> (CUShort, CUShort) # divMod :: CUShort -> CUShort -> (CUShort, CUShort) # toInteger :: CUShort -> Integer #
Integral CInt
Instance details Defined in Foreign.C.Types Methods quot :: CInt -> CInt -> CInt # rem :: CInt -> CInt -> CInt # div :: CInt -> CInt -> CInt # mod :: CInt -> CInt -> CInt # quotRem :: CInt -> CInt -> (CInt, CInt) # divMod :: CInt -> CInt -> (CInt, CInt) # toInteger :: CInt -> Integer #
Integral CUInt
Instance details Defined in Foreign.C.Types Methods quot :: CUInt -> CUInt -> CUInt # rem :: CUInt -> CUInt -> CUInt # div :: CUInt -> CUInt -> CUInt # mod :: CUInt -> CUInt -> CUInt # quotRem :: CUInt -> CUInt -> (CUInt, CUInt) # divMod :: CUInt -> CUInt -> (CUInt, CUInt) # toInteger :: CUInt -> Integer #
Integral CLong
Instance details Defined in Foreign.C.Types Methods quot :: CLong -> CLong -> CLong # rem :: CLong -> CLong -> CLong # div :: CLong -> CLong -> CLong # mod :: CLong -> CLong -> CLong # quotRem :: CLong -> CLong -> (CLong, CLong) # divMod :: CLong -> CLong -> (CLong, CLong) # toInteger :: CLong -> Integer #
Integral CULong
Instance details Defined in Foreign.C.Types Methods quot :: CULong -> CULong -> CULong # rem :: CULong -> CULong -> CULong # div :: CULong -> CULong -> CULong # mod :: CULong -> CULong -> CULong # quotRem :: CULong -> CULong -> (CULong, CULong) # divMod :: CULong -> CULong -> (CULong, CULong) # toInteger :: CULong -> Integer #
Integral CLLong
Instance details Defined in Foreign.C.Types Methods quot :: CLLong -> CLLong -> CLLong # rem :: CLLong -> CLLong -> CLLong # div :: CLLong -> CLLong -> CLLong # mod :: CLLong -> CLLong -> CLLong # quotRem :: CLLong -> CLLong -> (CLLong, CLLong) # divMod :: CLLong -> CLLong -> (CLLong, CLLong) # toInteger :: CLLong -> Integer #
Integral CULLong
Instance details Defined in Foreign.C.Types Methods quot :: CULLong -> CULLong -> CULLong # rem :: CULLong -> CULLong -> CULLong # div :: CULLong -> CULLong -> CULLong # mod :: CULLong -> CULLong -> CULLong # quotRem :: CULLong -> CULLong -> (CULLong, CULLong) # divMod :: CULLong -> CULLong -> (CULLong, CULLong) # toInteger :: CULLong -> Integer #
Integral CBool
Instance details Defined in Foreign.C.Types Methods quot :: CBool -> CBool -> CBool # rem :: CBool -> CBool -> CBool # div :: CBool -> CBool -> CBool # mod :: CBool -> CBool -> CBool # quotRem :: CBool -> CBool -> (CBool, CBool) # divMod :: CBool -> CBool -> (CBool, CBool) # toInteger :: CBool -> Integer #
Integral CPtrdiff
Instance details Defined in Foreign.C.Types Methods quot :: CPtrdiff -> CPtrdiff -> CPtrdiff # rem :: CPtrdiff -> CPtrdiff -> CPtrdiff # div :: CPtrdiff -> CPtrdiff -> CPtrdiff # mod :: CPtrdiff -> CPtrdiff -> CPtrdiff # quotRem :: CPtrdiff -> CPtrdiff -> (CPtrdiff, CPtrdiff) # divMod :: CPtrdiff -> CPtrdiff -> (CPtrdiff, CPtrdiff) # toInteger :: CPtrdiff -> Integer #
Integral CSize
Instance details Defined in Foreign.C.Types Methods quot :: CSize -> CSize -> CSize # rem :: CSize -> CSize -> CSize # div :: CSize -> CSize -> CSize # mod :: CSize -> CSize -> CSize # quotRem :: CSize -> CSize -> (CSize, CSize) # divMod :: CSize -> CSize -> (CSize, CSize) # toInteger :: CSize -> Integer #
Integral CWchar
Instance details Defined in Foreign.C.Types Methods quot :: CWchar -> CWchar -> CWchar # rem :: CWchar -> CWchar -> CWchar # div :: CWchar -> CWchar -> CWchar # mod :: CWchar -> CWchar -> CWchar # quotRem :: CWchar -> CWchar -> (CWchar, CWchar) # divMod :: CWchar -> CWchar -> (CWchar, CWchar) # toInteger :: CWchar -> Integer #
Integral CSigAtomic
Instance details Defined in Foreign.C.Types Methods quot :: CSigAtomic -> CSigAtomic -> CSigAtomic # rem :: CSigAtomic -> CSigAtomic -> CSigAtomic # div :: CSigAtomic -> CSigAtomic -> CSigAtomic # mod :: CSigAtomic -> CSigAtomic -> CSigAtomic # quotRem :: CSigAtomic -> CSigAtomic -> (CSigAtomic, CSigAtomic) # divMod :: CSigAtomic -> CSigAtomic -> (CSigAtomic, CSigAtomic) # toInteger :: CSigAtomic -> Integer #
Integral CIntPtr
Instance details Defined in Foreign.C.Types Methods quot :: CIntPtr -> CIntPtr -> CIntPtr # rem :: CIntPtr -> CIntPtr -> CIntPtr # div :: CIntPtr -> CIntPtr -> CIntPtr # mod :: CIntPtr -> CIntPtr -> CIntPtr # quotRem :: CIntPtr -> CIntPtr -> (CIntPtr, CIntPtr) # divMod :: CIntPtr -> CIntPtr -> (CIntPtr, CIntPtr) # toInteger :: CIntPtr -> Integer #
Integral CUIntPtr
Instance details Defined in Foreign.C.Types Methods quot :: CUIntPtr -> CUIntPtr -> CUIntPtr # rem :: CUIntPtr -> CUIntPtr -> CUIntPtr # div :: CUIntPtr -> CUIntPtr -> CUIntPtr # mod :: CUIntPtr -> CUIntPtr -> CUIntPtr # quotRem :: CUIntPtr -> CUIntPtr -> (CUIntPtr, CUIntPtr) # divMod :: CUIntPtr -> CUIntPtr -> (CUIntPtr, CUIntPtr) # toInteger :: CUIntPtr -> Integer #
Integral CIntMax
Instance details Defined in Foreign.C.Types Methods quot :: CIntMax -> CIntMax -> CIntMax # rem :: CIntMax -> CIntMax -> CIntMax # div :: CIntMax -> CIntMax -> CIntMax # mod :: CIntMax -> CIntMax -> CIntMax # quotRem :: CIntMax -> CIntMax -> (CIntMax, CIntMax) # divMod :: CIntMax -> CIntMax -> (CIntMax, CIntMax) # toInteger :: CIntMax -> Integer #
Integral CUIntMax
Instance details Defined in Foreign.C.Types Methods quot :: CUIntMax -> CUIntMax -> CUIntMax # rem :: CUIntMax -> CUIntMax -> CUIntMax # div :: CUIntMax -> CUIntMax -> CUIntMax # mod :: CUIntMax -> CUIntMax -> CUIntMax # quotRem :: CUIntMax -> CUIntMax -> (CUIntMax, CUIntMax) # divMod :: CUIntMax -> CUIntMax -> (CUIntMax, CUIntMax) # toInteger :: CUIntMax -> Integer #
Integral PortNumber
Instance details Defined in Network.Socket.Types Methods quot :: PortNumber -> PortNumber -> PortNumber # rem :: PortNumber -> PortNumber -> PortNumber # div :: PortNumber -> PortNumber -> PortNumber # mod :: PortNumber -> PortNumber -> PortNumber # quotRem :: PortNumber -> PortNumber -> (PortNumber, PortNumber) # divMod :: PortNumber -> PortNumber -> (PortNumber, PortNumber) # toInteger :: PortNumber -> Integer #
Integral a => Integral (Identity a)	Since: base-4.9.0.0
Instance details Defined in Data.Functor.Identity Methods quot :: Identity a -> Identity a -> Identity a # rem :: Identity a -> Identity a -> Identity a # div :: Identity a -> Identity a -> Identity a # mod :: Identity a -> Identity a -> Identity a # quotRem :: Identity a -> Identity a -> (Identity a, Identity a) # divMod :: Identity a -> Identity a -> (Identity a, Identity a) # toInteger :: Identity a -> Integer #
Integral a => Integral (Down a)	Since: base-4.14.0.0
Instance details Defined in Data.Ord Methods quot :: Down a -> Down a -> Down a # rem :: Down a -> Down a -> Down a # div :: Down a -> Down a -> Down a # mod :: Down a -> Down a -> Down a # quotRem :: Down a -> Down a -> (Down a, Down a) # divMod :: Down a -> Down a -> (Down a, Down a) # toInteger :: Down a -> Integer #
Integral a => Integral (Const a b)	Since: base-4.9.0.0
Instance details Defined in Data.Functor.Const Methods quot :: Const a b -> Const a b -> Const a b # rem :: Const a b -> Const a b -> Const a b # div :: Const a b -> Const a b -> Const a b # mod :: Const a b -> Const a b -> Const a b # quotRem :: Const a b -> Const a b -> (Const a b, Const a b) # divMod :: Const a b -> Const a b -> (Const a b, Const a b) # toInteger :: Const a b -> Integer #
Integral a => Integral (Tagged s a)
Instance details Defined in Data.Tagged Methods quot :: Tagged s a -> Tagged s a -> Tagged s a # rem :: Tagged s a -> Tagged s a -> Tagged s a # div :: Tagged s a -> Tagged s a -> Tagged s a # mod :: Tagged s a -> Tagged s a -> Tagged s a # quotRem :: Tagged s a -> Tagged s a -> (Tagged s a, Tagged s a) # divMod :: Tagged s a -> Tagged s a -> (Tagged s a, Tagged s a) # toInteger :: Tagged s a -> Integer #

class Applicative m => Monad (m :: Type -> Type) where #

The Monad class defines the basic operations over a monad, a concept from a branch of mathematics known as category theory. From the perspective of a Haskell programmer, however, it is best to think of a monad as an abstract datatype of actions. Haskell's do expressions provide a convenient syntax for writing monadic expressions.

Instances of Monad should satisfy the following:

Left identity: return a >>= k = k a
Right identity: m >>= return = m
Associativity: m >>= (\x -> k x >>= h) = (m >>= k) >>= h

Furthermore, the Monad and Applicative operations should relate as follows:

```
pure = return
```

m1 <*> m2 = m1 >>= (x1 -> m2 >>= (x2 -> return (x1 x2)))

The above laws imply:

```
fmap f xs  =  xs >>= return . f
```
```
(>>) = (*>)
```

and that pure and (<*>) satisfy the applicative functor laws.

The instances of Monad for lists, Maybe and IO defined in the Prelude satisfy these laws.

Minimal complete definition

(>>=)

Methods

(>>=) :: m a -> (a -> m b) -> m b infixl 1 #

Sequentially compose two actions, passing any value produced by the first as an argument to the second.

'as >>= bs' can be understood as the do expression

do a <- as
   bs a

(>>) :: m a -> m b -> m b infixl 1 #

Sequentially compose two actions, discarding any value produced by the first, like sequencing operators (such as the semicolon) in imperative languages.

'as >> bs' can be understood as the do expression

do as
   bs

return :: a -> m a #

Inject a value into the monadic type.

Instances

Instances details

Monad []	Since: base-2.1
Instance details Defined in GHC.Base Methods (>>=) :: [a] -> (a -> [b]) -> [b] # (>>) :: [a] -> [b] -> [b] # return :: a -> [a] #
Monad Maybe	Since: base-2.1
Instance details Defined in GHC.Base Methods (>>=) :: Maybe a -> (a -> Maybe b) -> Maybe b # (>>) :: Maybe a -> Maybe b -> Maybe b # return :: a -> Maybe a #
Monad IO	Since: base-2.1
Instance details Defined in GHC.Base Methods (>>=) :: IO a -> (a -> IO b) -> IO b # (>>) :: IO a -> IO b -> IO b # return :: a -> IO a #
Monad Par1	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Methods (>>=) :: Par1 a -> (a -> Par1 b) -> Par1 b # (>>) :: Par1 a -> Par1 b -> Par1 b # return :: a -> Par1 a #
Monad Q
Instance details Defined in Language.Haskell.TH.Syntax Methods (>>=) :: Q a -> (a -> Q b) -> Q b # (>>) :: Q a -> Q b -> Q b # return :: a -> Q a #
Monad IResult
Instance details Defined in Data.Aeson.Types.Internal Methods (>>=) :: IResult a -> (a -> IResult b) -> IResult b # (>>) :: IResult a -> IResult b -> IResult b # return :: a -> IResult a #
Monad Result
Instance details Defined in Data.Aeson.Types.Internal Methods (>>=) :: Result a -> (a -> Result b) -> Result b # (>>) :: Result a -> Result b -> Result b # return :: a -> Result a #
Monad Parser
Instance details Defined in Data.Aeson.Types.Internal Methods (>>=) :: Parser a -> (a -> Parser b) -> Parser b # (>>) :: Parser a -> Parser b -> Parser b # return :: a -> Parser a #
Monad Complex	Since: base-4.9.0.0
Instance details Defined in Data.Complex Methods (>>=) :: Complex a -> (a -> Complex b) -> Complex b # (>>) :: Complex a -> Complex b -> Complex b # return :: a -> Complex a #
Monad Min	Since: base-4.9.0.0
Instance details Defined in Data.Semigroup Methods (>>=) :: Min a -> (a -> Min b) -> Min b # (>>) :: Min a -> Min b -> Min b # return :: a -> Min a #
Monad Max	Since: base-4.9.0.0
Instance details Defined in Data.Semigroup Methods (>>=) :: Max a -> (a -> Max b) -> Max b # (>>) :: Max a -> Max b -> Max b # return :: a -> Max a #
Monad First	Since: base-4.9.0.0
Instance details Defined in Data.Semigroup Methods (>>=) :: First a -> (a -> First b) -> First b # (>>) :: First a -> First b -> First b # return :: a -> First a #
Monad Last	Since: base-4.9.0.0
Instance details Defined in Data.Semigroup Methods (>>=) :: Last a -> (a -> Last b) -> Last b # (>>) :: Last a -> Last b -> Last b # return :: a -> Last a #
Monad Option	Since: base-4.9.0.0
Instance details Defined in Data.Semigroup Methods (>>=) :: Option a -> (a -> Option b) -> Option b # (>>) :: Option a -> Option b -> Option b # return :: a -> Option a #
Monad Identity	Since: base-4.8.0.0
Instance details Defined in Data.Functor.Identity Methods (>>=) :: Identity a -> (a -> Identity b) -> Identity b # (>>) :: Identity a -> Identity b -> Identity b # return :: a -> Identity a #
Monad First	Since: base-4.8.0.0
Instance details Defined in Data.Monoid Methods (>>=) :: First a -> (a -> First b) -> First b # (>>) :: First a -> First b -> First b # return :: a -> First a #
Monad Last	Since: base-4.8.0.0
Instance details Defined in Data.Monoid Methods (>>=) :: Last a -> (a -> Last b) -> Last b # (>>) :: Last a -> Last b -> Last b # return :: a -> Last a #
Monad Dual	Since: base-4.8.0.0
Instance details Defined in Data.Semigroup.Internal Methods (>>=) :: Dual a -> (a -> Dual b) -> Dual b # (>>) :: Dual a -> Dual b -> Dual b # return :: a -> Dual a #
Monad Sum	Since: base-4.8.0.0
Instance details Defined in Data.Semigroup.Internal Methods (>>=) :: Sum a -> (a -> Sum b) -> Sum b # (>>) :: Sum a -> Sum b -> Sum b # return :: a -> Sum a #
Monad Product	Since: base-4.8.0.0
Instance details Defined in Data.Semigroup.Internal Methods (>>=) :: Product a -> (a -> Product b) -> Product b # (>>) :: Product a -> Product b -> Product b # return :: a -> Product a #
Monad Down	Since: base-4.11.0.0
Instance details Defined in Data.Ord Methods (>>=) :: Down a -> (a -> Down b) -> Down b # (>>) :: Down a -> Down b -> Down b # return :: a -> Down a #
Monad ReadPrec	Since: base-2.1
Instance details Defined in Text.ParserCombinators.ReadPrec Methods (>>=) :: ReadPrec a -> (a -> ReadPrec b) -> ReadPrec b # (>>) :: ReadPrec a -> ReadPrec b -> ReadPrec b # return :: a -> ReadPrec a #
Monad ReadP	Since: base-2.1
Instance details Defined in Text.ParserCombinators.ReadP Methods (>>=) :: ReadP a -> (a -> ReadP b) -> ReadP b # (>>) :: ReadP a -> ReadP b -> ReadP b # return :: a -> ReadP a #
Monad NonEmpty	Since: base-4.9.0.0
Instance details Defined in GHC.Base Methods (>>=) :: NonEmpty a -> (a -> NonEmpty b) -> NonEmpty b # (>>) :: NonEmpty a -> NonEmpty b -> NonEmpty b # return :: a -> NonEmpty a #
Monad MarkupM
Instance details Defined in Text.Blaze.Internal Methods (>>=) :: MarkupM a -> (a -> MarkupM b) -> MarkupM b # (>>) :: MarkupM a -> MarkupM b -> MarkupM b # return :: a -> MarkupM a #
Monad Put
Instance details Defined in Data.ByteString.Builder.Internal Methods (>>=) :: Put a -> (a -> Put b) -> Put b # (>>) :: Put a -> Put b -> Put b # return :: a -> Put a #
Monad Tree
Instance details Defined in Data.Tree Methods (>>=) :: Tree a -> (a -> Tree b) -> Tree b # (>>) :: Tree a -> Tree b -> Tree b # return :: a -> Tree a #
Monad Seq
Instance details Defined in Data.Sequence.Internal Methods (>>=) :: Seq a -> (a -> Seq b) -> Seq b # (>>) :: Seq a -> Seq b -> Seq b # return :: a -> Seq a #
Monad CryptoFailable
Instance details Defined in Crypto.Error.Types Methods (>>=) :: CryptoFailable a -> (a -> CryptoFailable b) -> CryptoFailable b # (>>) :: CryptoFailable a -> CryptoFailable b -> CryptoFailable b # return :: a -> CryptoFailable a #
Monad DNonEmpty
Instance details Defined in Data.DList.DNonEmpty.Internal Methods (>>=) :: DNonEmpty a -> (a -> DNonEmpty b) -> DNonEmpty b # (>>) :: DNonEmpty a -> DNonEmpty b -> DNonEmpty b # return :: a -> DNonEmpty a #
Monad DList
Instance details Defined in Data.DList.Internal Methods (>>=) :: DList a -> (a -> DList b) -> DList b # (>>) :: DList a -> DList b -> DList b # return :: a -> DList a #
Monad Root
Instance details Defined in Numeric.RootFinding Methods (>>=) :: Root a -> (a -> Root b) -> Root b # (>>) :: Root a -> Root b -> Root b # return :: a -> Root a #
Monad SmallArray
Instance details Defined in Data.Primitive.SmallArray Methods (>>=) :: SmallArray a -> (a -> SmallArray b) -> SmallArray b # (>>) :: SmallArray a -> SmallArray b -> SmallArray b # return :: a -> SmallArray a #
Monad Array
Instance details Defined in Data.Primitive.Array Methods (>>=) :: Array a -> (a -> Array b) -> Array b # (>>) :: Array a -> Array b -> Array b # return :: a -> Array a #
Monad Result
Instance details Defined in Text.Hamlet.Parse Methods (>>=) :: Result a -> (a -> Result b) -> Result b # (>>) :: Result a -> Result b -> Result b # return :: a -> Result a #
Monad Vector
Instance details Defined in Data.Vector Methods (>>=) :: Vector a -> (a -> Vector b) -> Vector b # (>>) :: Vector a -> Vector b -> Vector b # return :: a -> Vector a #
Monad Id
Instance details Defined in Data.Vector.Fusion.Util Methods (>>=) :: Id a -> (a -> Id b) -> Id b # (>>) :: Id a -> Id b -> Id b # return :: a -> Id a #
Monad Box
Instance details Defined in Data.Vector.Fusion.Util Methods (>>=) :: Box a -> (a -> Box b) -> Box b # (>>) :: Box a -> Box b -> Box b # return :: a -> Box a #
Monad Stream
Instance details Defined in Codec.Compression.Zlib.Stream Methods (>>=) :: Stream a -> (a -> Stream b) -> Stream b # (>>) :: Stream a -> Stream b -> Stream b # return :: a -> Stream a #
Monad P	Since: base-2.1
Instance details Defined in Text.ParserCombinators.ReadP Methods (>>=) :: P a -> (a -> P b) -> P b # (>>) :: P a -> P b -> P b # return :: a -> P a #
Monad (Either e)	Since: base-4.4.0.0
Instance details Defined in Data.Either Methods (>>=) :: Either e a -> (a -> Either e b) -> Either e b # (>>) :: Either e a -> Either e b -> Either e b # return :: a -> Either e a #
Monad (U1 :: Type -> Type)	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Methods (>>=) :: U1 a -> (a -> U1 b) -> U1 b # (>>) :: U1 a -> U1 b -> U1 b # return :: a -> U1 a #
Monoid a => Monad ((,) a)	Since: base-4.9.0.0
Instance details Defined in GHC.Base Methods (>>=) :: (a, a0) -> (a0 -> (a, b)) -> (a, b) # (>>) :: (a, a0) -> (a, b) -> (a, b) # return :: a0 -> (a, a0) #
Monad (ST s)	Since: base-2.1
Instance details Defined in GHC.ST Methods (>>=) :: ST s a -> (a -> ST s b) -> ST s b # (>>) :: ST s a -> ST s b -> ST s b # return :: a -> ST s a #
Monad (Parser i)
Instance details Defined in Data.Attoparsec.Internal.Types Methods (>>=) :: Parser i a -> (a -> Parser i b) -> Parser i b # (>>) :: Parser i a -> Parser i b -> Parser i b # return :: a -> Parser i a #
Monad m => Monad (WrappedMonad m)	Since: base-4.7.0.0
Instance details Defined in Control.Applicative Methods (>>=) :: WrappedMonad m a -> (a -> WrappedMonad m b) -> WrappedMonad m b # (>>) :: WrappedMonad m a -> WrappedMonad m b -> WrappedMonad m b # return :: a -> WrappedMonad m a #
ArrowApply a => Monad (ArrowMonad a)	Since: base-2.1
Instance details Defined in Control.Arrow Methods (>>=) :: ArrowMonad a a0 -> (a0 -> ArrowMonad a b) -> ArrowMonad a b # (>>) :: ArrowMonad a a0 -> ArrowMonad a b -> ArrowMonad a b # return :: a0 -> ArrowMonad a a0 #
Monad (Proxy :: Type -> Type)	Since: base-4.7.0.0
Instance details Defined in Data.Proxy Methods (>>=) :: Proxy a -> (a -> Proxy b) -> Proxy b # (>>) :: Proxy a -> Proxy b -> Proxy b # return :: a -> Proxy a #
Monad m => Monad (MaybeT m)
Instance details Defined in Control.Monad.Trans.Maybe Methods (>>=) :: MaybeT m a -> (a -> MaybeT m b) -> MaybeT m b # (>>) :: MaybeT m a -> MaybeT m b -> MaybeT m b # return :: a -> MaybeT m a #
Monad m => Monad (ResourceT m)
Instance details Defined in Control.Monad.Trans.Resource.Internal Methods (>>=) :: ResourceT m a -> (a -> ResourceT m b) -> ResourceT m b # (>>) :: ResourceT m a -> ResourceT m b -> ResourceT m b # return :: a -> ResourceT m a #
Functor f => Monad (Free f)
Instance details Defined in Control.Monad.Free Methods (>>=) :: Free f a -> (a -> Free f b) -> Free f b # (>>) :: Free f a -> Free f b -> Free f b # return :: a -> Free f a #
Monad (SpecM a)
Instance details Defined in Test.Hspec.Core.Spec.Monad Methods (>>=) :: SpecM a a0 -> (a0 -> SpecM a b) -> SpecM a b # (>>) :: SpecM a a0 -> SpecM a b -> SpecM a b # return :: a0 -> SpecM a a0 #
Monad m => Monad (ListT m)
Instance details Defined in Control.Monad.Trans.List Methods (>>=) :: ListT m a -> (a -> ListT m b) -> ListT m b # (>>) :: ListT m a -> ListT m b -> ListT m b # return :: a -> ListT m a #
Monad m => Monad (NoLoggingT m)
Instance details Defined in Control.Monad.Logger Methods (>>=) :: NoLoggingT m a -> (a -> NoLoggingT m b) -> NoLoggingT m b # (>>) :: NoLoggingT m a -> NoLoggingT m b -> NoLoggingT m b # return :: a -> NoLoggingT m a #
Monad m => Monad (WriterLoggingT m)
Instance details Defined in Control.Monad.Logger Methods (>>=) :: WriterLoggingT m a -> (a -> WriterLoggingT m b) -> WriterLoggingT m b # (>>) :: WriterLoggingT m a -> WriterLoggingT m b -> WriterLoggingT m b # return :: a -> WriterLoggingT m a #
Monad m => Monad (LoggingT m)
Instance details Defined in Control.Monad.Logger Methods (>>=) :: LoggingT m a -> (a -> LoggingT m b) -> LoggingT m b # (>>) :: LoggingT m a -> LoggingT m b -> LoggingT m b # return :: a -> LoggingT m a #
Monad f => Monad (WrappedPoly f)
Instance details Defined in Data.MonoTraversable Methods (>>=) :: WrappedPoly f a -> (a -> WrappedPoly f b) -> WrappedPoly f b # (>>) :: WrappedPoly f a -> WrappedPoly f b -> WrappedPoly f b # return :: a -> WrappedPoly f a #
Semigroup a => Monad (These a)
Instance details Defined in Data.Strict.These Methods (>>=) :: These a a0 -> (a0 -> These a b) -> These a b # (>>) :: These a a0 -> These a b -> These a b # return :: a0 -> These a a0 #
Semigroup a => Monad (These a)
Instance details Defined in Data.These Methods (>>=) :: These a a0 -> (a0 -> These a b) -> These a b # (>>) :: These a a0 -> These a b -> These a b # return :: a0 -> These a a0 #
Monad (WidgetFor site)
Instance details Defined in Yesod.Core.Types Methods (>>=) :: WidgetFor site a -> (a -> WidgetFor site b) -> WidgetFor site b # (>>) :: WidgetFor site a -> WidgetFor site b -> WidgetFor site b # return :: a -> WidgetFor site a #
Monad (HandlerFor site)
Instance details Defined in Yesod.Core.Types Methods (>>=) :: HandlerFor site a -> (a -> HandlerFor site b) -> HandlerFor site b # (>>) :: HandlerFor site a -> HandlerFor site b -> HandlerFor site b # return :: a -> HandlerFor site a #
Monad (SIO s)
Instance details Defined in Yesod.Test Methods (>>=) :: SIO s a -> (a -> SIO s b) -> SIO s b # (>>) :: SIO s a -> SIO s b -> SIO s b # return :: a -> SIO s a #
Monad (SetM s)
Instance details Defined in Data.Graph Methods (>>=) :: SetM s a -> (a -> SetM s b) -> SetM s b # (>>) :: SetM s a -> SetM s b -> SetM s b # return :: a -> SetM s a #
Monad f => Monad (Rec1 f)	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Methods (>>=) :: Rec1 f a -> (a -> Rec1 f b) -> Rec1 f b # (>>) :: Rec1 f a -> Rec1 f b -> Rec1 f b # return :: a -> Rec1 f a #
(Monoid a, Monoid b) => Monad ((,,) a b)	Since: base-4.14.0.0
Instance details Defined in GHC.Base Methods (>>=) :: (a, b, a0) -> (a0 -> (a, b, b0)) -> (a, b, b0) # (>>) :: (a, b, a0) -> (a, b, b0) -> (a, b, b0) # return :: a0 -> (a, b, a0) #
Monad m => Monad (Kleisli m a)	Since: base-4.14.0.0
Instance details Defined in Control.Arrow Methods (>>=) :: Kleisli m a a0 -> (a0 -> Kleisli m a b) -> Kleisli m a b # (>>) :: Kleisli m a a0 -> Kleisli m a b -> Kleisli m a b # return :: a0 -> Kleisli m a a0 #
Monad f => Monad (Ap f)	Since: base-4.12.0.0
Instance details Defined in Data.Monoid Methods (>>=) :: Ap f a -> (a -> Ap f b) -> Ap f b # (>>) :: Ap f a -> Ap f b -> Ap f b # return :: a -> Ap f a #
Monad f => Monad (Alt f)	Since: base-4.8.0.0
Instance details Defined in Data.Semigroup.Internal Methods (>>=) :: Alt f a -> (a -> Alt f b) -> Alt f b # (>>) :: Alt f a -> Alt f b -> Alt f b # return :: a -> Alt f a #
Monad m => Monad (IdentityT m)
Instance details Defined in Control.Monad.Trans.Identity Methods (>>=) :: IdentityT m a -> (a -> IdentityT m b) -> IdentityT m b # (>>) :: IdentityT m a -> IdentityT m b -> IdentityT m b # return :: a -> IdentityT m a #
(Monoid w, Monad m) => Monad (WriterT w m)
Instance details Defined in Control.Monad.Trans.Writer.Strict Methods (>>=) :: WriterT w m a -> (a -> WriterT w m b) -> WriterT w m b # (>>) :: WriterT w m a -> WriterT w m b -> WriterT w m b # return :: a -> WriterT w m a #
(Monoid w, Monad m) => Monad (WriterT w m)
Instance details Defined in Control.Monad.Trans.Writer.Lazy Methods (>>=) :: WriterT w m a -> (a -> WriterT w m b) -> WriterT w m b # (>>) :: WriterT w m a -> WriterT w m b -> WriterT w m b # return :: a -> WriterT w m a #
Monad m => Monad (StateT s m)
Instance details Defined in Control.Monad.Trans.State.Strict Methods (>>=) :: StateT s m a -> (a -> StateT s m b) -> StateT s m b # (>>) :: StateT s m a -> StateT s m b -> StateT s m b # return :: a -> StateT s m a #
Monad m => Monad (StateT s m)
Instance details Defined in Control.Monad.Trans.State.Lazy Methods (>>=) :: StateT s m a -> (a -> StateT s m b) -> StateT s m b # (>>) :: StateT s m a -> StateT s m b -> StateT s m b # return :: a -> StateT s m a #
Monad m => Monad (ReaderT r m)
Instance details Defined in Control.Monad.Trans.Reader Methods (>>=) :: ReaderT r m a -> (a -> ReaderT r m b) -> ReaderT r m b # (>>) :: ReaderT r m a -> ReaderT r m b -> ReaderT r m b # return :: a -> ReaderT r m a #
Monad m => Monad (ExceptT e m)
Instance details Defined in Control.Monad.Trans.Except Methods (>>=) :: ExceptT e m a -> (a -> ExceptT e m b) -> ExceptT e m b # (>>) :: ExceptT e m a -> ExceptT e m b -> ExceptT e m b # return :: a -> ExceptT e m a #
(Applicative f, Monad f) => Monad (WhenMissing f x)	Equivalent to `ReaderT k (ReaderT x (MaybeT f))`. Since: containers-0.5.9
Instance details Defined in Data.IntMap.Internal Methods (>>=) :: WhenMissing f x a -> (a -> WhenMissing f x b) -> WhenMissing f x b # (>>) :: WhenMissing f x a -> WhenMissing f x b -> WhenMissing f x b # return :: a -> WhenMissing f x a #
(Functor f, Monad m) => Monad (FreeT f m)
Instance details Defined in Control.Monad.Free Methods (>>=) :: FreeT f m a -> (a -> FreeT f m b) -> FreeT f m b # (>>) :: FreeT f m a -> FreeT f m b -> FreeT f m b # return :: a -> FreeT f m a #
(Monad m, Error e) => Monad (ErrorT e m)
Instance details Defined in Control.Monad.Trans.Error Methods (>>=) :: ErrorT e m a -> (a -> ErrorT e m b) -> ErrorT e m b # (>>) :: ErrorT e m a -> ErrorT e m b -> ErrorT e m b # return :: a -> ErrorT e m a #
Monad (Tagged s)
Instance details Defined in Data.Tagged Methods (>>=) :: Tagged s a -> (a -> Tagged s b) -> Tagged s b # (>>) :: Tagged s a -> Tagged s b -> Tagged s b # return :: a -> Tagged s a #
Monad (SubHandlerFor child master)
Instance details Defined in Yesod.Core.Types Methods (>>=) :: SubHandlerFor child master a -> (a -> SubHandlerFor child master b) -> SubHandlerFor child master b # (>>) :: SubHandlerFor child master a -> SubHandlerFor child master b -> SubHandlerFor child master b # return :: a -> SubHandlerFor child master a #
Monad ((->) r :: Type -> Type)	Since: base-2.1
Instance details Defined in GHC.Base Methods (>>=) :: (r -> a) -> (a -> r -> b) -> r -> b # (>>) :: (r -> a) -> (r -> b) -> r -> b # return :: a -> r -> a #
(Monad f, Monad g) => Monad (f :*: g)	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Methods (>>=) :: (f :: g) a -> (a -> (f :: g) b) -> (f :: g) b # (>>) :: (f :: g) a -> (f :: g) b -> (f :: g) b # return :: a -> (f :*: g) a #
(Monoid a, Monoid b, Monoid c) => Monad ((,,,) a b c)	Since: base-4.14.0.0
Instance details Defined in GHC.Base Methods (>>=) :: (a, b, c, a0) -> (a0 -> (a, b, c, b0)) -> (a, b, c, b0) # (>>) :: (a, b, c, a0) -> (a, b, c, b0) -> (a, b, c, b0) # return :: a0 -> (a, b, c, a0) #
(Monad f, Monad g) => Monad (Product f g)	Since: base-4.9.0.0
Instance details Defined in Data.Functor.Product Methods (>>=) :: Product f g a -> (a -> Product f g b) -> Product f g b # (>>) :: Product f g a -> Product f g b -> Product f g b # return :: a -> Product f g a #
Monad (ConduitT i o m)
Instance details Defined in Data.Conduit.Internal.Conduit Methods (>>=) :: ConduitT i o m a -> (a -> ConduitT i o m b) -> ConduitT i o m b # (>>) :: ConduitT i o m a -> ConduitT i o m b -> ConduitT i o m b # return :: a -> ConduitT i o m a #
(Monad f, Applicative f) => Monad (WhenMatched f x y)	Equivalent to `ReaderT Key (ReaderT x (ReaderT y (MaybeT f)))` Since: containers-0.5.9
Instance details Defined in Data.IntMap.Internal Methods (>>=) :: WhenMatched f x y a -> (a -> WhenMatched f x y b) -> WhenMatched f x y b # (>>) :: WhenMatched f x y a -> WhenMatched f x y b -> WhenMatched f x y b # return :: a -> WhenMatched f x y a #
(Applicative f, Monad f) => Monad (WhenMissing f k x)	Equivalent to `ReaderT k (ReaderT x (MaybeT f))` . Since: containers-0.5.9
Instance details Defined in Data.Map.Internal Methods (>>=) :: WhenMissing f k x a -> (a -> WhenMissing f k x b) -> WhenMissing f k x b # (>>) :: WhenMissing f k x a -> WhenMissing f k x b -> WhenMissing f k x b # return :: a -> WhenMissing f k x a #
Stream s => Monad (ParsecT e s m)	`return` returns a parser that succeeds without consuming input.
Instance details Defined in Text.Megaparsec.Internal Methods (>>=) :: ParsecT e s m a -> (a -> ParsecT e s m b) -> ParsecT e s m b # (>>) :: ParsecT e s m a -> ParsecT e s m b -> ParsecT e s m b # return :: a -> ParsecT e s m a #
Monad f => Monad (M1 i c f)	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Methods (>>=) :: M1 i c f a -> (a -> M1 i c f b) -> M1 i c f b # (>>) :: M1 i c f a -> M1 i c f b -> M1 i c f b # return :: a -> M1 i c f a #
(Monoid w, Monad m) => Monad (RWST r w s m)
Instance details Defined in Control.Monad.Trans.RWS.Strict Methods (>>=) :: RWST r w s m a -> (a -> RWST r w s m b) -> RWST r w s m b # (>>) :: RWST r w s m a -> RWST r w s m b -> RWST r w s m b # return :: a -> RWST r w s m a #
(Monoid w, Monad m) => Monad (RWST r w s m)
Instance details Defined in Control.Monad.Trans.RWS.Lazy Methods (>>=) :: RWST r w s m a -> (a -> RWST r w s m b) -> RWST r w s m b # (>>) :: RWST r w s m a -> RWST r w s m b -> RWST r w s m b # return :: a -> RWST r w s m a #
(Monad f, Applicative f) => Monad (WhenMatched f k x y)	Equivalent to `ReaderT k (ReaderT x (ReaderT y (MaybeT f)))` Since: containers-0.5.9
Instance details Defined in Data.Map.Internal Methods (>>=) :: WhenMatched f k x y a -> (a -> WhenMatched f k x y b) -> WhenMatched f k x y b # (>>) :: WhenMatched f k x y a -> WhenMatched f k x y b -> WhenMatched f k x y b # return :: a -> WhenMatched f k x y a #
Monad state => Monad (Builder collection mutCollection step state err)
Instance details Defined in Basement.MutableBuilder Methods (>>=) :: Builder collection mutCollection step state err a -> (a -> Builder collection mutCollection step state err b) -> Builder collection mutCollection step state err b # (>>) :: Builder collection mutCollection step state err a -> Builder collection mutCollection step state err b -> Builder collection mutCollection step state err b # return :: a -> Builder collection mutCollection step state err a #
Monad m => Monad (Pipe l i o u m)
Instance details Defined in Data.Conduit.Internal.Pipe Methods (>>=) :: Pipe l i o u m a -> (a -> Pipe l i o u m b) -> Pipe l i o u m b # (>>) :: Pipe l i o u m a -> Pipe l i o u m b -> Pipe l i o u m b # return :: a -> Pipe l i o u m a #

class Functor (f :: Type -> Type) where #

A type f is a Functor if it provides a function fmap which, given any types a and b lets you apply any function from (a -> b) to turn an f a into an f b, preserving the structure of f. Furthermore f needs to adhere to the following:

Identity: fmap id == id
Composition: fmap (f . g) == fmap f . fmap g

Note, that the second law follows from the free theorem of the type fmap and the first law, so you need only check that the former condition holds.

Minimal complete definition

fmap

Methods

fmap :: (a -> b) -> f a -> f b #

Using ApplicativeDo: 'fmap f as' can be understood as the do expression

do a <- as
   pure (f a)

with an inferred Functor constraint.

(<$) :: a -> f b -> f a infixl 4 #

Replace all locations in the input with the same value. The default definition is fmap . const, but this may be overridden with a more efficient version.

Using ApplicativeDo: 'a <$ bs' can be understood as the do expression

do bs
   pure a

with an inferred Functor constraint.

Instances

Instances details

Functor []	Since: base-2.1
Instance details Defined in GHC.Base Methods fmap :: (a -> b) -> [a] -> [b] # (<$) :: a -> [b] -> [a] #
Functor Maybe	Since: base-2.1
Instance details Defined in GHC.Base Methods fmap :: (a -> b) -> Maybe a -> Maybe b # (<$) :: a -> Maybe b -> Maybe a #
Functor IO	Since: base-2.1
Instance details Defined in GHC.Base Methods fmap :: (a -> b) -> IO a -> IO b # (<$) :: a -> IO b -> IO a #
Functor Par1	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Methods fmap :: (a -> b) -> Par1 a -> Par1 b # (<$) :: a -> Par1 b -> Par1 a #
Functor Q
Instance details Defined in Language.Haskell.TH.Syntax Methods fmap :: (a -> b) -> Q a -> Q b # (<$) :: a -> Q b -> Q a #
Functor Only
Instance details Defined in Data.Tuple.Only Methods fmap :: (a -> b) -> Only a -> Only b # (<$) :: a -> Only b -> Only a #
Functor FromJSONKeyFunction	Only law abiding up to interpretation
Instance details Defined in Data.Aeson.Types.FromJSON Methods fmap :: (a -> b) -> FromJSONKeyFunction a -> FromJSONKeyFunction b # (<$) :: a -> FromJSONKeyFunction b -> FromJSONKeyFunction a #
Functor IResult
Instance details Defined in Data.Aeson.Types.Internal Methods fmap :: (a -> b) -> IResult a -> IResult b # (<$) :: a -> IResult b -> IResult a #
Functor Result
Instance details Defined in Data.Aeson.Types.Internal Methods fmap :: (a -> b) -> Result a -> Result b # (<$) :: a -> Result b -> Result a #
Functor Parser
Instance details Defined in Data.Aeson.Types.Internal Methods fmap :: (a -> b) -> Parser a -> Parser b # (<$) :: a -> Parser b -> Parser a #
Functor Complex	Since: base-4.9.0.0
Instance details Defined in Data.Complex Methods fmap :: (a -> b) -> Complex a -> Complex b # (<$) :: a -> Complex b -> Complex a #
Functor Min	Since: base-4.9.0.0
Instance details Defined in Data.Semigroup Methods fmap :: (a -> b) -> Min a -> Min b # (<$) :: a -> Min b -> Min a #
Functor Max	Since: base-4.9.0.0
Instance details Defined in Data.Semigroup Methods fmap :: (a -> b) -> Max a -> Max b # (<$) :: a -> Max b -> Max a #
Functor First	Since: base-4.9.0.0
Instance details Defined in Data.Semigroup Methods fmap :: (a -> b) -> First a -> First b # (<$) :: a -> First b -> First a #
Functor Last	Since: base-4.9.0.0
Instance details Defined in Data.Semigroup Methods fmap :: (a -> b) -> Last a -> Last b # (<$) :: a -> Last b -> Last a #
Functor Option	Since: base-4.9.0.0
Instance details Defined in Data.Semigroup Methods fmap :: (a -> b) -> Option a -> Option b # (<$) :: a -> Option b -> Option a #
Functor ZipList	Since: base-2.1
Instance details Defined in Control.Applicative Methods fmap :: (a -> b) -> ZipList a -> ZipList b # (<$) :: a -> ZipList b -> ZipList a #
Functor Identity	Since: base-4.8.0.0
Instance details Defined in Data.Functor.Identity Methods fmap :: (a -> b) -> Identity a -> Identity b # (<$) :: a -> Identity b -> Identity a #
Functor Handler	Since: base-4.6.0.0
Instance details Defined in Control.Exception Methods fmap :: (a -> b) -> Handler a -> Handler b # (<$) :: a -> Handler b -> Handler a #
Functor First	Since: base-4.8.0.0
Instance details Defined in Data.Monoid Methods fmap :: (a -> b) -> First a -> First b # (<$) :: a -> First b -> First a #
Functor Last	Since: base-4.8.0.0
Instance details Defined in Data.Monoid Methods fmap :: (a -> b) -> Last a -> Last b # (<$) :: a -> Last b -> Last a #
Functor Dual	Since: base-4.8.0.0
Instance details Defined in Data.Semigroup.Internal Methods fmap :: (a -> b) -> Dual a -> Dual b # (<$) :: a -> Dual b -> Dual a #
Functor Sum	Since: base-4.8.0.0
Instance details Defined in Data.Semigroup.Internal Methods fmap :: (a -> b) -> Sum a -> Sum b # (<$) :: a -> Sum b -> Sum a #
Functor Product	Since: base-4.8.0.0
Instance details Defined in Data.Semigroup.Internal Methods fmap :: (a -> b) -> Product a -> Product b # (<$) :: a -> Product b -> Product a #
Functor Down	Since: base-4.11.0.0
Instance details Defined in Data.Ord Methods fmap :: (a -> b) -> Down a -> Down b # (<$) :: a -> Down b -> Down a #
Functor ReadPrec	Since: base-2.1
Instance details Defined in Text.ParserCombinators.ReadPrec Methods fmap :: (a -> b) -> ReadPrec a -> ReadPrec b # (<$) :: a -> ReadPrec b -> ReadPrec a #
Functor ReadP	Since: base-2.1
Instance details Defined in Text.ParserCombinators.ReadP Methods fmap :: (a -> b) -> ReadP a -> ReadP b # (<$) :: a -> ReadP b -> ReadP a #
Functor NonEmpty	Since: base-4.9.0.0
Instance details Defined in GHC.Base Methods fmap :: (a -> b) -> NonEmpty a -> NonEmpty b # (<$) :: a -> NonEmpty b -> NonEmpty a #
Functor MarkupM
Instance details Defined in Text.Blaze.Internal Methods fmap :: (a -> b) -> MarkupM a -> MarkupM b # (<$) :: a -> MarkupM b -> MarkupM a #
Functor Put
Instance details Defined in Data.ByteString.Builder.Internal Methods fmap :: (a -> b) -> Put a -> Put b # (<$) :: a -> Put b -> Put a #
Functor Group
Instance details Defined in System.Console.CmdArgs.Explicit.Type Methods fmap :: (a -> b) -> Group a -> Group b # (<$) :: a -> Group b -> Group a #
Functor Flush
Instance details Defined in Data.Conduit.Internal.Conduit Methods fmap :: (a -> b) -> Flush a -> Flush b # (<$) :: a -> Flush b -> Flush a #
Functor IntMap
Instance details Defined in Data.IntMap.Internal Methods fmap :: (a -> b) -> IntMap a -> IntMap b # (<$) :: a -> IntMap b -> IntMap a #
Functor SCC	Since: containers-0.5.4
Instance details Defined in Data.Graph Methods fmap :: (a -> b) -> SCC a -> SCC b # (<$) :: a -> SCC b -> SCC a #
Functor Tree
Instance details Defined in Data.Tree Methods fmap :: (a -> b) -> Tree a -> Tree b # (<$) :: a -> Tree b -> Tree a #
Functor Seq
Instance details Defined in Data.Sequence.Internal Methods fmap :: (a -> b) -> Seq a -> Seq b # (<$) :: a -> Seq b -> Seq a #
Functor FingerTree
Instance details Defined in Data.Sequence.Internal Methods fmap :: (a -> b) -> FingerTree a -> FingerTree b # (<$) :: a -> FingerTree b -> FingerTree a #
Functor Digit
Instance details Defined in Data.Sequence.Internal Methods fmap :: (a -> b) -> Digit a -> Digit b # (<$) :: a -> Digit b -> Digit a #
Functor Node
Instance details Defined in Data.Sequence.Internal Methods fmap :: (a -> b) -> Node a -> Node b # (<$) :: a -> Node b -> Node a #
Functor Elem
Instance details Defined in Data.Sequence.Internal Methods fmap :: (a -> b) -> Elem a -> Elem b # (<$) :: a -> Elem b -> Elem a #
Functor ViewL
Instance details Defined in Data.Sequence.Internal Methods fmap :: (a -> b) -> ViewL a -> ViewL b # (<$) :: a -> ViewL b -> ViewL a #
Functor ViewR
Instance details Defined in Data.Sequence.Internal Methods fmap :: (a -> b) -> ViewR a -> ViewR b # (<$) :: a -> ViewR b -> ViewR a #
Functor CryptoFailable
Instance details Defined in Crypto.Error.Types Methods fmap :: (a -> b) -> CryptoFailable a -> CryptoFailable b # (<$) :: a -> CryptoFailable b -> CryptoFailable a #
Functor DNonEmpty
Instance details Defined in Data.DList.DNonEmpty.Internal Methods fmap :: (a -> b) -> DNonEmpty a -> DNonEmpty b # (<$) :: a -> DNonEmpty b -> DNonEmpty a #
Functor DList
Instance details Defined in Data.DList.Internal Methods fmap :: (a -> b) -> DList a -> DList b # (<$) :: a -> DList b -> DList a #
Functor Doc
Instance details Defined in Text.DocLayout Methods fmap :: (a -> b) -> Doc a -> Doc b # (<$) :: a -> Doc b -> Doc a #
Functor HistoriedResponse
Instance details Defined in Network.HTTP.Client Methods fmap :: (a -> b) -> HistoriedResponse a -> HistoriedResponse b # (<$) :: a -> HistoriedResponse b -> HistoriedResponse a #
Functor Response
Instance details Defined in Network.HTTP.Client.Types Methods fmap :: (a -> b) -> Response a -> Response b # (<$) :: a -> Response b -> Response a #
Functor Root
Instance details Defined in Numeric.RootFinding Methods fmap :: (a -> b) -> Root a -> Root b # (<$) :: a -> Root b -> Root a #
Functor ErrorItem
Instance details Defined in Text.Megaparsec.Error Methods fmap :: (a -> b) -> ErrorItem a -> ErrorItem b # (<$) :: a -> ErrorItem b -> ErrorItem a #
Functor ErrorFancy
Instance details Defined in Text.Megaparsec.Error Methods fmap :: (a -> b) -> ErrorFancy a -> ErrorFancy b # (<$) :: a -> ErrorFancy b -> ErrorFancy a #
Functor Doc
Instance details Defined in Text.PrettyPrint.Annotated.HughesPJ Methods fmap :: (a -> b) -> Doc a -> Doc b # (<$) :: a -> Doc b -> Doc a #
Functor AnnotDetails
Instance details Defined in Text.PrettyPrint.Annotated.HughesPJ Methods fmap :: (a -> b) -> AnnotDetails a -> AnnotDetails b # (<$) :: a -> AnnotDetails b -> AnnotDetails a #
Functor Span
Instance details Defined in Text.PrettyPrint.Annotated.HughesPJ Methods fmap :: (a -> b) -> Span a -> Span b # (<$) :: a -> Span b -> Span a #
Functor Doc	Alter the document’s annotations. This instance makes `Doc` more flexible (because it can be used in `Functor`-polymorphic values), but `fmap` is much less readable compared to using `reAnnotate` in code that only works for `Doc` anyway. Consider using the latter when the type does not matter.
Instance details Defined in Prettyprinter.Internal Methods fmap :: (a -> b) -> Doc a -> Doc b # (<$) :: a -> Doc b -> Doc a #
Functor SimpleDocStream	Alter the document’s annotations. This instance makes `SimpleDocStream` more flexible (because it can be used in `Functor`-polymorphic values), but `fmap` is much less readable compared to using `reAnnotateST` in code that only works for `SimpleDocStream` anyway. Consider using the latter when the type does not matter.
Instance details Defined in Prettyprinter.Internal Methods fmap :: (a -> b) -> SimpleDocStream a -> SimpleDocStream b # (<$) :: a -> SimpleDocStream b -> SimpleDocStream a #
Functor SmallArray
Instance details Defined in Data.Primitive.SmallArray Methods fmap :: (a -> b) -> SmallArray a -> SmallArray b # (<$) :: a -> SmallArray b -> SmallArray a #
Functor Array
Instance details Defined in Data.Primitive.Array Methods fmap :: (a -> b) -> Array a -> Array b # (<$) :: a -> Array b -> Array a #
Functor Result
Instance details Defined in Text.Hamlet.Parse Methods fmap :: (a -> b) -> Result a -> Result b # (<$) :: a -> Result b -> Result a #
Functor Maybe
Instance details Defined in Data.Strict.Maybe Methods fmap :: (a -> b) -> Maybe a -> Maybe b # (<$) :: a -> Maybe b -> Maybe a #
Functor Flat
Instance details Defined in UnliftIO.Internals.Async Methods fmap :: (a -> b) -> Flat a -> Flat b # (<$) :: a -> Flat b -> Flat a #
Functor FlatApp
Instance details Defined in UnliftIO.Internals.Async Methods fmap :: (a -> b) -> FlatApp a -> FlatApp b # (<$) :: a -> FlatApp b -> FlatApp a #
Functor Vector
Instance details Defined in Data.Vector Methods fmap :: (a -> b) -> Vector a -> Vector b # (<$) :: a -> Vector b -> Vector a #
Functor Id
Instance details Defined in Data.Vector.Fusion.Util Methods fmap :: (a -> b) -> Id a -> Id b # (<$) :: a -> Id b -> Id a #
Functor Box
Instance details Defined in Data.Vector.Fusion.Util Methods fmap :: (a -> b) -> Box a -> Box b # (<$) :: a -> Box b -> Box a #
Functor Haskeline
Instance details Defined in System.Console.Wizard.Haskeline Methods fmap :: (a -> b) -> Haskeline a -> Haskeline b # (<$) :: a -> Haskeline b -> Haskeline a #
Functor WithSettings
Instance details Defined in System.Console.Wizard.Haskeline Methods fmap :: (a -> b) -> WithSettings a -> WithSettings b # (<$) :: a -> WithSettings b -> WithSettings a #
Functor FormResult
Instance details Defined in Yesod.Form.Types Methods fmap :: (a -> b) -> FormResult a -> FormResult b # (<$) :: a -> FormResult b -> FormResult a #
Functor Option	Since: yesod-form-1.4.6
Instance details Defined in Yesod.Form.Fields Methods fmap :: (a -> b) -> Option a -> Option b # (<$) :: a -> Option b -> Option a #
Functor OptionList	Since: yesod-form-1.4.6
Instance details Defined in Yesod.Form.Fields Methods fmap :: (a -> b) -> OptionList a -> OptionList b # (<$) :: a -> OptionList b -> OptionList a #
Functor ResourceTree
Instance details Defined in Yesod.Routes.TH.Types Methods fmap :: (a -> b) -> ResourceTree a -> ResourceTree b # (<$) :: a -> ResourceTree b -> ResourceTree a #
Functor Resource
Instance details Defined in Yesod.Routes.TH.Types Methods fmap :: (a -> b) -> Resource a -> Resource b # (<$) :: a -> Resource b -> Resource a #
Functor Piece
Instance details Defined in Yesod.Routes.TH.Types Methods fmap :: (a -> b) -> Piece a -> Piece b # (<$) :: a -> Piece b -> Piece a #
Functor Dispatch
Instance details Defined in Yesod.Routes.TH.Types Methods fmap :: (a -> b) -> Dispatch a -> Dispatch b # (<$) :: a -> Dispatch b -> Dispatch a #
Functor Stream
Instance details Defined in Codec.Compression.Zlib.Stream Methods fmap :: (a -> b) -> Stream a -> Stream b # (<$) :: a -> Stream b -> Stream a #
Functor P	Since: base-4.8.0.0
Instance details Defined in Text.ParserCombinators.ReadP Methods fmap :: (a -> b) -> P a -> P b # (<$) :: a -> P b -> P a #
Functor FlattenResult
Instance details Defined in Prettyprinter.Internal Methods fmap :: (a -> b) -> FlattenResult a -> FlattenResult b # (<$) :: a -> FlattenResult b -> FlattenResult a #
Functor (Either a)	Since: base-3.0
Instance details Defined in Data.Either Methods fmap :: (a0 -> b) -> Either a a0 -> Either a b # (<$) :: a0 -> Either a b -> Either a a0 #
Functor (V1 :: Type -> Type)	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Methods fmap :: (a -> b) -> V1 a -> V1 b # (<$) :: a -> V1 b -> V1 a #
Functor (U1 :: Type -> Type)	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Methods fmap :: (a -> b) -> U1 a -> U1 b # (<$) :: a -> U1 b -> U1 a #
Functor ((,) a)	Since: base-2.1
Instance details Defined in GHC.Base Methods fmap :: (a0 -> b) -> (a, a0) -> (a, b) # (<$) :: a0 -> (a, b) -> (a, a0) #
Functor (ST s)	Since: base-2.1
Instance details Defined in GHC.ST Methods fmap :: (a -> b) -> ST s a -> ST s b # (<$) :: a -> ST s b -> ST s a #
Functor (HashMap k)
Instance details Defined in Data.HashMap.Internal Methods fmap :: (a -> b) -> HashMap k a -> HashMap k b # (<$) :: a -> HashMap k b -> HashMap k a #
Functor (Map k)
Instance details Defined in Data.Map.Internal Methods fmap :: (a -> b) -> Map k a -> Map k b # (<$) :: a -> Map k b -> Map k a #
Functor (Array i)	Since: base-2.1
Instance details Defined in GHC.Arr Methods fmap :: (a -> b) -> Array i a -> Array i b # (<$) :: a -> Array i b -> Array i a #
Functor (IResult i)
Instance details Defined in Data.Attoparsec.Internal.Types Methods fmap :: (a -> b) -> IResult i a -> IResult i b # (<$) :: a -> IResult i b -> IResult i a #
Functor (Parser i)
Instance details Defined in Data.Attoparsec.Internal.Types Methods fmap :: (a -> b) -> Parser i a -> Parser i b # (<$) :: a -> Parser i b -> Parser i a #
Functor (Arg a)	Since: base-4.9.0.0
Instance details Defined in Data.Semigroup Methods fmap :: (a0 -> b) -> Arg a a0 -> Arg a b # (<$) :: a0 -> Arg a b -> Arg a a0 #
Monad m => Functor (WrappedMonad m)	Since: base-2.1
Instance details Defined in Control.Applicative Methods fmap :: (a -> b) -> WrappedMonad m a -> WrappedMonad m b # (<$) :: a -> WrappedMonad m b -> WrappedMonad m a #
Arrow a => Functor (ArrowMonad a)	Since: base-4.6.0.0
Instance details Defined in Control.Arrow Methods fmap :: (a0 -> b) -> ArrowMonad a a0 -> ArrowMonad a b # (<$) :: a0 -> ArrowMonad a b -> ArrowMonad a a0 #
Functor (Proxy :: Type -> Type)	Since: base-4.7.0.0
Instance details Defined in Data.Proxy Methods fmap :: (a -> b) -> Proxy a -> Proxy b # (<$) :: a -> Proxy b -> Proxy a #
Functor m => Functor (MaybeT m)
Instance details Defined in Control.Monad.Trans.Maybe Methods fmap :: (a -> b) -> MaybeT m a -> MaybeT m b # (<$) :: a -> MaybeT m b -> MaybeT m a #
Monad m => Functor (ZipSource m)
Instance details Defined in Data.Conduit.Internal.Conduit Methods fmap :: (a -> b) -> ZipSource m a -> ZipSource m b # (<$) :: a -> ZipSource m b -> ZipSource m a #
Functor m => Functor (ResourceT m)
Instance details Defined in Control.Monad.Trans.Resource.Internal Methods fmap :: (a -> b) -> ResourceT m a -> ResourceT m b # (<$) :: a -> ResourceT m b -> ResourceT m a #
Functor f => Functor (Free f)
Instance details Defined in Control.Monad.Free Methods fmap :: (a -> b) -> Free f a -> Free f b # (<$) :: a -> Free f b -> Free f a #
Functor (CompoundPeriodicReport a)
Instance details Defined in Hledger.Reports.ReportTypes Methods fmap :: (a0 -> b) -> CompoundPeriodicReport a a0 -> CompoundPeriodicReport a b # (<$) :: a0 -> CompoundPeriodicReport a b -> CompoundPeriodicReport a a0 #
Functor (PeriodicReportRow a)
Instance details Defined in Hledger.Reports.ReportTypes Methods fmap :: (a0 -> b) -> PeriodicReportRow a a0 -> PeriodicReportRow a b # (<$) :: a0 -> PeriodicReportRow a b -> PeriodicReportRow a a0 #
Functor (PeriodicReport a)
Instance details Defined in Hledger.Reports.ReportTypes Methods fmap :: (a0 -> b) -> PeriodicReport a a0 -> PeriodicReport a b # (<$) :: a0 -> PeriodicReport a b -> PeriodicReport a a0 #
Functor (SpecM a)
Instance details Defined in Test.Hspec.Core.Spec.Monad Methods fmap :: (a0 -> b) -> SpecM a a0 -> SpecM a b # (<$) :: a0 -> SpecM a b -> SpecM a a0 #
Functor m => Functor (ListT m)
Instance details Defined in Control.Monad.Trans.List Methods fmap :: (a -> b) -> ListT m a -> ListT m b # (<$) :: a -> ListT m b -> ListT m a #
Functor m => Functor (NoLoggingT m)
Instance details Defined in Control.Monad.Logger Methods fmap :: (a -> b) -> NoLoggingT m a -> NoLoggingT m b # (<$) :: a -> NoLoggingT m b -> NoLoggingT m a #
Functor m => Functor (WriterLoggingT m)
Instance details Defined in Control.Monad.Logger Methods fmap :: (a -> b) -> WriterLoggingT m a -> WriterLoggingT m b # (<$) :: a -> WriterLoggingT m b -> WriterLoggingT m a #
Functor m => Functor (LoggingT m)
Instance details Defined in Control.Monad.Logger Methods fmap :: (a -> b) -> LoggingT m a -> LoggingT m b # (<$) :: a -> LoggingT m b -> LoggingT m a #
Functor f => Functor (WrappedPoly f)
Instance details Defined in Data.MonoTraversable Methods fmap :: (a -> b) -> WrappedPoly f a -> WrappedPoly f b # (<$) :: a -> WrappedPoly f b -> WrappedPoly f a #
Functor (Pair e)
Instance details Defined in Data.Strict.Tuple Methods fmap :: (a -> b) -> Pair e a -> Pair e b # (<$) :: a -> Pair e b -> Pair e a #
Functor (These a)
Instance details Defined in Data.Strict.These Methods fmap :: (a0 -> b) -> These a a0 -> These a b # (<$) :: a0 -> These a b -> These a a0 #
Functor (Either a)
Instance details Defined in Data.Strict.Either Methods fmap :: (a0 -> b) -> Either a a0 -> Either a b # (<$) :: a0 -> Either a b -> Either a a0 #
Functor (These a)
Instance details Defined in Data.These Methods fmap :: (a0 -> b) -> These a a0 -> These a b # (<$) :: a0 -> These a b -> These a a0 #
Monad m => Functor (Concurrently m)	Since: unliftio-0.1.0.0
Instance details Defined in UnliftIO.Internals.Async Methods fmap :: (a -> b) -> Concurrently m a -> Concurrently m b # (<$) :: a -> Concurrently m b -> Concurrently m a #
Functor m => Functor (Conc m)
Instance details Defined in UnliftIO.Internals.Async Methods fmap :: (a -> b) -> Conc m a -> Conc m b # (<$) :: a -> Conc m b -> Conc m a #
Monad m => Functor (AForm m)
Instance details Defined in Yesod.Form.Types Methods fmap :: (a -> b) -> AForm m a -> AForm m b # (<$) :: a -> AForm m b -> AForm m a #
Monad m => Functor (FormInput m)
Instance details Defined in Yesod.Form.Input Methods fmap :: (a -> b) -> FormInput m a -> FormInput m b # (<$) :: a -> FormInput m b -> FormInput m a #
Functor (WidgetFor site)
Instance details Defined in Yesod.Core.Types Methods fmap :: (a -> b) -> WidgetFor site a -> WidgetFor site b # (<$) :: a -> WidgetFor site b -> WidgetFor site a #
Functor (HandlerFor site)
Instance details Defined in Yesod.Core.Types Methods fmap :: (a -> b) -> HandlerFor site a -> HandlerFor site b # (<$) :: a -> HandlerFor site b -> HandlerFor site a #
Functor (SIO s)
Instance details Defined in Yesod.Test Methods fmap :: (a -> b) -> SIO s a -> SIO s b # (<$) :: a -> SIO s b -> SIO s a #
Functor (SetM s)
Instance details Defined in Data.Graph Methods fmap :: (a -> b) -> SetM s a -> SetM s b # (<$) :: a -> SetM s b -> SetM s a #
Functor f => Functor (Rec1 f)	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Methods fmap :: (a -> b) -> Rec1 f a -> Rec1 f b # (<$) :: a -> Rec1 f b -> Rec1 f a #
Functor (URec Char :: Type -> Type)	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Methods fmap :: (a -> b) -> URec Char a -> URec Char b # (<$) :: a -> URec Char b -> URec Char a #
Functor (URec Double :: Type -> Type)	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Methods fmap :: (a -> b) -> URec Double a -> URec Double b # (<$) :: a -> URec Double b -> URec Double a #
Functor (URec Float :: Type -> Type)	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Methods fmap :: (a -> b) -> URec Float a -> URec Float b # (<$) :: a -> URec Float b -> URec Float a #
Functor (URec Int :: Type -> Type)	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Methods fmap :: (a -> b) -> URec Int a -> URec Int b # (<$) :: a -> URec Int b -> URec Int a #
Functor (URec Word :: Type -> Type)	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Methods fmap :: (a -> b) -> URec Word a -> URec Word b # (<$) :: a -> URec Word b -> URec Word a #
Functor (URec (Ptr ()) :: Type -> Type)	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Methods fmap :: (a -> b) -> URec (Ptr ()) a -> URec (Ptr ()) b # (<$) :: a -> URec (Ptr ()) b -> URec (Ptr ()) a #
Functor ((,,) a b)	Since: base-4.14.0.0
Instance details Defined in GHC.Base Methods fmap :: (a0 -> b0) -> (a, b, a0) -> (a, b, b0) # (<$) :: a0 -> (a, b, b0) -> (a, b, a0) #
Arrow a => Functor (WrappedArrow a b)	Since: base-2.1
Instance details Defined in Control.Applicative Methods fmap :: (a0 -> b0) -> WrappedArrow a b a0 -> WrappedArrow a b b0 # (<$) :: a0 -> WrappedArrow a b b0 -> WrappedArrow a b a0 #
Functor m => Functor (Kleisli m a)	Since: base-4.14.0.0
Instance details Defined in Control.Arrow Methods fmap :: (a0 -> b) -> Kleisli m a a0 -> Kleisli m a b # (<$) :: a0 -> Kleisli m a b -> Kleisli m a a0 #
Functor (Const m :: Type -> Type)	Since: base-2.1
Instance details Defined in Data.Functor.Const Methods fmap :: (a -> b) -> Const m a -> Const m b # (<$) :: a -> Const m b -> Const m a #
Functor f => Functor (Ap f)	Since: base-4.12.0.0
Instance details Defined in Data.Monoid Methods fmap :: (a -> b) -> Ap f a -> Ap f b # (<$) :: a -> Ap f b -> Ap f a #
Functor f => Functor (Alt f)	Since: base-4.8.0.0
Instance details Defined in Data.Semigroup.Internal Methods fmap :: (a -> b) -> Alt f a -> Alt f b # (<$) :: a -> Alt f b -> Alt f a #
Functor m => Functor (IdentityT m)
Instance details Defined in Control.Monad.Trans.Identity Methods fmap :: (a -> b) -> IdentityT m a -> IdentityT m b # (<$) :: a -> IdentityT m b -> IdentityT m a #
Functor m => Functor (WriterT w m)
Instance details Defined in Control.Monad.Trans.Writer.Strict Methods fmap :: (a -> b) -> WriterT w m a -> WriterT w m b # (<$) :: a -> WriterT w m b -> WriterT w m a #
Functor m => Functor (WriterT w m)
Instance details Defined in Control.Monad.Trans.Writer.Lazy Methods fmap :: (a -> b) -> WriterT w m a -> WriterT w m b # (<$) :: a -> WriterT w m b -> WriterT w m a #
Functor m => Functor (StateT s m)
Instance details Defined in Control.Monad.Trans.State.Strict Methods fmap :: (a -> b) -> StateT s m a -> StateT s m b # (<$) :: a -> StateT s m b -> StateT s m a #
Functor m => Functor (StateT s m)
Instance details Defined in Control.Monad.Trans.State.Lazy Methods fmap :: (a -> b) -> StateT s m a -> StateT s m b # (<$) :: a -> StateT s m b -> StateT s m a #
Functor m => Functor (ReaderT r m)
Instance details Defined in Control.Monad.Trans.Reader Methods fmap :: (a -> b) -> ReaderT r m a -> ReaderT r m b # (<$) :: a -> ReaderT r m b -> ReaderT r m a #
Functor m => Functor (ExceptT e m)
Instance details Defined in Control.Monad.Trans.Except Methods fmap :: (a -> b) -> ExceptT e m a -> ExceptT e m b # (<$) :: a -> ExceptT e m b -> ExceptT e m a #
Monad m => Functor (ZipSink i m)
Instance details Defined in Data.Conduit.Internal.Conduit Methods fmap :: (a -> b) -> ZipSink i m a -> ZipSink i m b # (<$) :: a -> ZipSink i m b -> ZipSink i m a #
(Applicative f, Monad f) => Functor (WhenMissing f x)	Since: containers-0.5.9
Instance details Defined in Data.IntMap.Internal Methods fmap :: (a -> b) -> WhenMissing f x a -> WhenMissing f x b # (<$) :: a -> WhenMissing f x b -> WhenMissing f x a #
(Functor f, Functor m) => Functor (FreeT f m)
Instance details Defined in Control.Monad.Free Methods fmap :: (a -> b) -> FreeT f m a -> FreeT f m b # (<$) :: a -> FreeT f m b -> FreeT f m a #
Functor m => Functor (ErrorT e m)
Instance details Defined in Control.Monad.Trans.Error Methods fmap :: (a -> b) -> ErrorT e m a -> ErrorT e m b # (<$) :: a -> ErrorT e m b -> ErrorT e m a #
Functor (Tagged s)
Instance details Defined in Data.Tagged Methods fmap :: (a -> b) -> Tagged s a -> Tagged s b # (<$) :: a -> Tagged s b -> Tagged s a #
(Functor f, Functor g) => Functor (These1 f g)
Instance details Defined in Data.Functor.These Methods fmap :: (a -> b) -> These1 f g a -> These1 f g b # (<$) :: a -> These1 f g b -> These1 f g a #
Monad m => Functor (Bundle m v)
Instance details Defined in Data.Vector.Fusion.Bundle.Monadic Methods fmap :: (a -> b) -> Bundle m v a -> Bundle m v b # (<$) :: a -> Bundle m v b -> Bundle m v a #
Functor (SubHandlerFor sub master)
Instance details Defined in Yesod.Core.Types Methods fmap :: (a -> b) -> SubHandlerFor sub master a -> SubHandlerFor sub master b # (<$) :: a -> SubHandlerFor sub master b -> SubHandlerFor sub master a #
Functor ((->) r :: Type -> Type)	Since: base-2.1
Instance details Defined in GHC.Base Methods fmap :: (a -> b) -> (r -> a) -> r -> b # (<$) :: a -> (r -> b) -> r -> a #
Functor (K1 i c :: Type -> Type)	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Methods fmap :: (a -> b) -> K1 i c a -> K1 i c b # (<$) :: a -> K1 i c b -> K1 i c a #
(Functor f, Functor g) => Functor (f :+: g)	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Methods fmap :: (a -> b) -> (f :+: g) a -> (f :+: g) b # (<$) :: a -> (f :+: g) b -> (f :+: g) a #
(Functor f, Functor g) => Functor (f :*: g)	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Methods fmap :: (a -> b) -> (f :: g) a -> (f :: g) b # (<$) :: a -> (f :: g) b -> (f :: g) a #
Functor ((,,,) a b c)	Since: base-4.14.0.0
Instance details Defined in GHC.Base Methods fmap :: (a0 -> b0) -> (a, b, c, a0) -> (a, b, c, b0) # (<$) :: a0 -> (a, b, c, b0) -> (a, b, c, a0) #
(Functor f, Functor g) => Functor (Product f g)	Since: base-4.9.0.0
Instance details Defined in Data.Functor.Product Methods fmap :: (a -> b) -> Product f g a -> Product f g b # (<$) :: a -> Product f g b -> Product f g a #
(Functor f, Functor g) => Functor (Sum f g)	Since: base-4.9.0.0
Instance details Defined in Data.Functor.Sum Methods fmap :: (a -> b) -> Sum f g a -> Sum f g b # (<$) :: a -> Sum f g b -> Sum f g a #
Functor (ConduitT i o m)
Instance details Defined in Data.Conduit.Internal.Conduit Methods fmap :: (a -> b) -> ConduitT i o m a -> ConduitT i o m b # (<$) :: a -> ConduitT i o m b -> ConduitT i o m a #
Functor (ZipConduit i o m)
Instance details Defined in Data.Conduit.Internal.Conduit Methods fmap :: (a -> b) -> ZipConduit i o m a -> ZipConduit i o m b # (<$) :: a -> ZipConduit i o m b -> ZipConduit i o m a #
Functor f => Functor (WhenMatched f x y)	Since: containers-0.5.9
Instance details Defined in Data.IntMap.Internal Methods fmap :: (a -> b) -> WhenMatched f x y a -> WhenMatched f x y b # (<$) :: a -> WhenMatched f x y b -> WhenMatched f x y a #
(Applicative f, Monad f) => Functor (WhenMissing f k x)	Since: containers-0.5.9
Instance details Defined in Data.Map.Internal Methods fmap :: (a -> b) -> WhenMissing f k x a -> WhenMissing f k x b # (<$) :: a -> WhenMissing f k x b -> WhenMissing f k x a #
Functor (ParsecT e s m)
Instance details Defined in Text.Megaparsec.Internal Methods fmap :: (a -> b) -> ParsecT e s m a -> ParsecT e s m b # (<$) :: a -> ParsecT e s m b -> ParsecT e s m a #
Functor f => Functor (M1 i c f)	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Methods fmap :: (a -> b) -> M1 i c f a -> M1 i c f b # (<$) :: a -> M1 i c f b -> M1 i c f a #
(Functor f, Functor g) => Functor (f :.: g)	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Methods fmap :: (a -> b) -> (f :.: g) a -> (f :.: g) b # (<$) :: a -> (f :.: g) b -> (f :.: g) a #
(Functor f, Functor g) => Functor (Compose f g)	Since: base-4.9.0.0
Instance details Defined in Data.Functor.Compose Methods fmap :: (a -> b) -> Compose f g a -> Compose f g b # (<$) :: a -> Compose f g b -> Compose f g a #
Bifunctor p => Functor (Flip p a)
Instance details Defined in Data.Bifunctor.Flip Methods fmap :: (a0 -> b) -> Flip p a a0 -> Flip p a b # (<$) :: a0 -> Flip p a b -> Flip p a a0 #
Functor m => Functor (RWST r w s m)
Instance details Defined in Control.Monad.Trans.RWS.Strict Methods fmap :: (a -> b) -> RWST r w s m a -> RWST r w s m b # (<$) :: a -> RWST r w s m b -> RWST r w s m a #
Functor m => Functor (RWST r w s m)
Instance details Defined in Control.Monad.Trans.RWS.Lazy Methods fmap :: (a -> b) -> RWST r w s m a -> RWST r w s m b # (<$) :: a -> RWST r w s m b -> RWST r w s m a #
Functor f => Functor (WhenMatched f k x y)	Since: containers-0.5.9
Instance details Defined in Data.Map.Internal Methods fmap :: (a -> b) -> WhenMatched f k x y a -> WhenMatched f k x y b # (<$) :: a -> WhenMatched f k x y b -> WhenMatched f k x y a #
Monad state => Functor (Builder collection mutCollection step state err)
Instance details Defined in Basement.MutableBuilder Methods fmap :: (a -> b) -> Builder collection mutCollection step state err a -> Builder collection mutCollection step state err b # (<$) :: a -> Builder collection mutCollection step state err b -> Builder collection mutCollection step state err a #
Monad m => Functor (Pipe l i o u m)
Instance details Defined in Data.Conduit.Internal.Pipe Methods fmap :: (a -> b) -> Pipe l i o u m a -> Pipe l i o u m b # (<$) :: a -> Pipe l i o u m b -> Pipe l i o u m a #
(Functor f, Bifunctor p) => Functor (Tannen f p a)
Instance details Defined in Data.Bifunctor.Tannen Methods fmap :: (a0 -> b) -> Tannen f p a a0 -> Tannen f p a b # (<$) :: a0 -> Tannen f p a b -> Tannen f p a a0 #
(Bifunctor p, Functor g) => Functor (Biff p f g a)
Instance details Defined in Data.Bifunctor.Biff Methods fmap :: (a0 -> b) -> Biff p f g a a0 -> Biff p f g a b # (<$) :: a0 -> Biff p f g a b -> Biff p f g a a0 #

class Num a where #

Basic numeric class.

The Haskell Report defines no laws for Num. However, (+) and (*) are customarily expected to define a ring and have the following properties:

Associativity of (+): (x + y) + z = x + (y + z)
Commutativity of (+): x + y = y + x
fromInteger 0 is the additive identity: x + fromInteger 0 = x
negate gives the additive inverse: x + negate x = fromInteger 0
Associativity of (*): (x * y) * z = x * (y * z)
fromInteger 1 is the multiplicative identity: x * fromInteger 1 = x and fromInteger 1 * x = x
Distributivity of (*) with respect to (+): a * (b + c) = (a * b) + (a * c) and (b + c) * a = (b * a) + (c * a)

Note that it isn't customarily expected that a type instance of both Num and Ord implement an ordered ring. Indeed, in base only Integer and Rational do.

Minimal complete definition

(+), (*), abs, signum, fromInteger, (negate | (-))

Methods

(+) :: a -> a -> a infixl 6 #

(-) :: a -> a -> a infixl 6 #

(*) :: a -> a -> a infixl 7 #

negate :: a -> a #

Unary negation.

abs :: a -> a #

Absolute value.

signum :: a -> a #

Sign of a number. The functions abs and signum should satisfy the law:

abs x * signum x == x

For real numbers, the signum is either -1 (negative), 0 (zero) or 1 (positive).

fromInteger :: Integer -> a #

Conversion from an Integer. An integer literal represents the application of the function fromInteger to the appropriate value of type Integer, so such literals have type (Num a) => a.

Instances

Instances details

Num Int	Since: base-2.1
Instance details Defined in GHC.Num Methods (+) :: Int -> Int -> Int # (-) :: Int -> Int -> Int # (*) :: Int -> Int -> Int # negate :: Int -> Int # abs :: Int -> Int # signum :: Int -> Int # fromInteger :: Integer -> Int #
Num Int8	Since: base-2.1
Instance details Defined in GHC.Int Methods (+) :: Int8 -> Int8 -> Int8 # (-) :: Int8 -> Int8 -> Int8 # (*) :: Int8 -> Int8 -> Int8 # negate :: Int8 -> Int8 # abs :: Int8 -> Int8 # signum :: Int8 -> Int8 # fromInteger :: Integer -> Int8 #
Num Int16	Since: base-2.1
Instance details Defined in GHC.Int Methods (+) :: Int16 -> Int16 -> Int16 # (-) :: Int16 -> Int16 -> Int16 # (*) :: Int16 -> Int16 -> Int16 # negate :: Int16 -> Int16 # abs :: Int16 -> Int16 # signum :: Int16 -> Int16 # fromInteger :: Integer -> Int16 #
Num Int32	Since: base-2.1
Instance details Defined in GHC.Int Methods (+) :: Int32 -> Int32 -> Int32 # (-) :: Int32 -> Int32 -> Int32 # (*) :: Int32 -> Int32 -> Int32 # negate :: Int32 -> Int32 # abs :: Int32 -> Int32 # signum :: Int32 -> Int32 # fromInteger :: Integer -> Int32 #
Num Int64	Since: base-2.1
Instance details Defined in GHC.Int Methods (+) :: Int64 -> Int64 -> Int64 # (-) :: Int64 -> Int64 -> Int64 # (*) :: Int64 -> Int64 -> Int64 # negate :: Int64 -> Int64 # abs :: Int64 -> Int64 # signum :: Int64 -> Int64 # fromInteger :: Integer -> Int64 #
Num Integer	Since: base-2.1
Instance details Defined in GHC.Num Methods (+) :: Integer -> Integer -> Integer # (-) :: Integer -> Integer -> Integer # (*) :: Integer -> Integer -> Integer # negate :: Integer -> Integer # abs :: Integer -> Integer # signum :: Integer -> Integer # fromInteger :: Integer -> Integer #
Num Natural	Note that `Natural`'s `Num` instance isn't a ring: no element but 0 has an additive inverse. It is a semiring though. Since: base-4.8.0.0
Instance details Defined in GHC.Num Methods (+) :: Natural -> Natural -> Natural # (-) :: Natural -> Natural -> Natural # (*) :: Natural -> Natural -> Natural # negate :: Natural -> Natural # abs :: Natural -> Natural # signum :: Natural -> Natural # fromInteger :: Integer -> Natural #
Num Word	Since: base-2.1
Instance details Defined in GHC.Num Methods (+) :: Word -> Word -> Word # (-) :: Word -> Word -> Word # (*) :: Word -> Word -> Word # negate :: Word -> Word # abs :: Word -> Word # signum :: Word -> Word # fromInteger :: Integer -> Word #
Num Word8	Since: base-2.1
Instance details Defined in GHC.Word Methods (+) :: Word8 -> Word8 -> Word8 # (-) :: Word8 -> Word8 -> Word8 # (*) :: Word8 -> Word8 -> Word8 # negate :: Word8 -> Word8 # abs :: Word8 -> Word8 # signum :: Word8 -> Word8 # fromInteger :: Integer -> Word8 #
Num Word16	Since: base-2.1
Instance details Defined in GHC.Word Methods (+) :: Word16 -> Word16 -> Word16 # (-) :: Word16 -> Word16 -> Word16 # (*) :: Word16 -> Word16 -> Word16 # negate :: Word16 -> Word16 # abs :: Word16 -> Word16 # signum :: Word16 -> Word16 # fromInteger :: Integer -> Word16 #
Num Word32	Since: base-2.1
Instance details Defined in GHC.Word Methods (+) :: Word32 -> Word32 -> Word32 # (-) :: Word32 -> Word32 -> Word32 # (*) :: Word32 -> Word32 -> Word32 # negate :: Word32 -> Word32 # abs :: Word32 -> Word32 # signum :: Word32 -> Word32 # fromInteger :: Integer -> Word32 #
Num Word64	Since: base-2.1
Instance details Defined in GHC.Word Methods (+) :: Word64 -> Word64 -> Word64 # (-) :: Word64 -> Word64 -> Word64 # (*) :: Word64 -> Word64 -> Word64 # negate :: Word64 -> Word64 # abs :: Word64 -> Word64 # signum :: Word64 -> Word64 # fromInteger :: Integer -> Word64 #
Num Scientific	WARNING: `+` and `-` compute the `Integer` magnitude: `10^e` where `e` is the difference between the `base10Exponents` of the arguments. If these methods are applied to arguments which have huge exponents this could fill up all space and crash your program! So don't apply these methods to scientific numbers coming from untrusted sources. The other methods can be used safely.
Instance details Defined in Data.Scientific Methods (+) :: Scientific -> Scientific -> Scientific # (-) :: Scientific -> Scientific -> Scientific # (*) :: Scientific -> Scientific -> Scientific # negate :: Scientific -> Scientific # abs :: Scientific -> Scientific # signum :: Scientific -> Scientific # fromInteger :: Integer -> Scientific #
Num Pos
Instance details Defined in Data.Attoparsec.Internal.Types Methods (+) :: Pos -> Pos -> Pos # (-) :: Pos -> Pos -> Pos # (*) :: Pos -> Pos -> Pos # negate :: Pos -> Pos # abs :: Pos -> Pos # signum :: Pos -> Pos # fromInteger :: Integer -> Pos #
Num CChar
Instance details Defined in Foreign.C.Types Methods (+) :: CChar -> CChar -> CChar # (-) :: CChar -> CChar -> CChar # (*) :: CChar -> CChar -> CChar # negate :: CChar -> CChar # abs :: CChar -> CChar # signum :: CChar -> CChar # fromInteger :: Integer -> CChar #
Num CSChar
Instance details Defined in Foreign.C.Types Methods (+) :: CSChar -> CSChar -> CSChar # (-) :: CSChar -> CSChar -> CSChar # (*) :: CSChar -> CSChar -> CSChar # negate :: CSChar -> CSChar # abs :: CSChar -> CSChar # signum :: CSChar -> CSChar # fromInteger :: Integer -> CSChar #
Num CUChar
Instance details Defined in Foreign.C.Types Methods (+) :: CUChar -> CUChar -> CUChar # (-) :: CUChar -> CUChar -> CUChar # (*) :: CUChar -> CUChar -> CUChar # negate :: CUChar -> CUChar # abs :: CUChar -> CUChar # signum :: CUChar -> CUChar # fromInteger :: Integer -> CUChar #
Num CShort
Instance details Defined in Foreign.C.Types Methods (+) :: CShort -> CShort -> CShort # (-) :: CShort -> CShort -> CShort # (*) :: CShort -> CShort -> CShort # negate :: CShort -> CShort # abs :: CShort -> CShort # signum :: CShort -> CShort # fromInteger :: Integer -> CShort #
Num CUShort
Instance details Defined in Foreign.C.Types Methods (+) :: CUShort -> CUShort -> CUShort # (-) :: CUShort -> CUShort -> CUShort # (*) :: CUShort -> CUShort -> CUShort # negate :: CUShort -> CUShort # abs :: CUShort -> CUShort # signum :: CUShort -> CUShort # fromInteger :: Integer -> CUShort #
Num CInt
Instance details Defined in Foreign.C.Types Methods (+) :: CInt -> CInt -> CInt # (-) :: CInt -> CInt -> CInt # (*) :: CInt -> CInt -> CInt # negate :: CInt -> CInt # abs :: CInt -> CInt # signum :: CInt -> CInt # fromInteger :: Integer -> CInt #
Num CUInt
Instance details Defined in Foreign.C.Types Methods (+) :: CUInt -> CUInt -> CUInt # (-) :: CUInt -> CUInt -> CUInt # (*) :: CUInt -> CUInt -> CUInt # negate :: CUInt -> CUInt # abs :: CUInt -> CUInt # signum :: CUInt -> CUInt # fromInteger :: Integer -> CUInt #
Num CLong
Instance details Defined in Foreign.C.Types Methods (+) :: CLong -> CLong -> CLong # (-) :: CLong -> CLong -> CLong # (*) :: CLong -> CLong -> CLong # negate :: CLong -> CLong # abs :: CLong -> CLong # signum :: CLong -> CLong # fromInteger :: Integer -> CLong #
Num CULong
Instance details Defined in Foreign.C.Types Methods (+) :: CULong -> CULong -> CULong # (-) :: CULong -> CULong -> CULong # (*) :: CULong -> CULong -> CULong # negate :: CULong -> CULong # abs :: CULong -> CULong # signum :: CULong -> CULong # fromInteger :: Integer -> CULong #
Num CLLong
Instance details Defined in Foreign.C.Types Methods (+) :: CLLong -> CLLong -> CLLong # (-) :: CLLong -> CLLong -> CLLong # (*) :: CLLong -> CLLong -> CLLong # negate :: CLLong -> CLLong # abs :: CLLong -> CLLong # signum :: CLLong -> CLLong # fromInteger :: Integer -> CLLong #
Num CULLong
Instance details Defined in Foreign.C.Types Methods (+) :: CULLong -> CULLong -> CULLong # (-) :: CULLong -> CULLong -> CULLong # (*) :: CULLong -> CULLong -> CULLong # negate :: CULLong -> CULLong # abs :: CULLong -> CULLong # signum :: CULLong -> CULLong # fromInteger :: Integer -> CULLong #
Num CBool
Instance details Defined in Foreign.C.Types Methods (+) :: CBool -> CBool -> CBool # (-) :: CBool -> CBool -> CBool # (*) :: CBool -> CBool -> CBool # negate :: CBool -> CBool # abs :: CBool -> CBool # signum :: CBool -> CBool # fromInteger :: Integer -> CBool #
Num CFloat
Instance details Defined in Foreign.C.Types Methods (+) :: CFloat -> CFloat -> CFloat # (-) :: CFloat -> CFloat -> CFloat # (*) :: CFloat -> CFloat -> CFloat # negate :: CFloat -> CFloat # abs :: CFloat -> CFloat # signum :: CFloat -> CFloat # fromInteger :: Integer -> CFloat #
Num CDouble
Instance details Defined in Foreign.C.Types Methods (+) :: CDouble -> CDouble -> CDouble # (-) :: CDouble -> CDouble -> CDouble # (*) :: CDouble -> CDouble -> CDouble # negate :: CDouble -> CDouble # abs :: CDouble -> CDouble # signum :: CDouble -> CDouble # fromInteger :: Integer -> CDouble #
Num CPtrdiff
Instance details Defined in Foreign.C.Types Methods (+) :: CPtrdiff -> CPtrdiff -> CPtrdiff # (-) :: CPtrdiff -> CPtrdiff -> CPtrdiff # (*) :: CPtrdiff -> CPtrdiff -> CPtrdiff # negate :: CPtrdiff -> CPtrdiff # abs :: CPtrdiff -> CPtrdiff # signum :: CPtrdiff -> CPtrdiff # fromInteger :: Integer -> CPtrdiff #
Num CSize
Instance details Defined in Foreign.C.Types Methods (+) :: CSize -> CSize -> CSize # (-) :: CSize -> CSize -> CSize # (*) :: CSize -> CSize -> CSize # negate :: CSize -> CSize # abs :: CSize -> CSize # signum :: CSize -> CSize # fromInteger :: Integer -> CSize #
Num CWchar
Instance details Defined in Foreign.C.Types Methods (+) :: CWchar -> CWchar -> CWchar # (-) :: CWchar -> CWchar -> CWchar # (*) :: CWchar -> CWchar -> CWchar # negate :: CWchar -> CWchar # abs :: CWchar -> CWchar # signum :: CWchar -> CWchar # fromInteger :: Integer -> CWchar #
Num CSigAtomic
Instance details Defined in Foreign.C.Types Methods (+) :: CSigAtomic -> CSigAtomic -> CSigAtomic # (-) :: CSigAtomic -> CSigAtomic -> CSigAtomic # (*) :: CSigAtomic -> CSigAtomic -> CSigAtomic # negate :: CSigAtomic -> CSigAtomic # abs :: CSigAtomic -> CSigAtomic # signum :: CSigAtomic -> CSigAtomic # fromInteger :: Integer -> CSigAtomic #
Num CClock
Instance details Defined in Foreign.C.Types Methods (+) :: CClock -> CClock -> CClock # (-) :: CClock -> CClock -> CClock # (*) :: CClock -> CClock -> CClock # negate :: CClock -> CClock # abs :: CClock -> CClock # signum :: CClock -> CClock # fromInteger :: Integer -> CClock #
Num CTime
Instance details Defined in Foreign.C.Types Methods (+) :: CTime -> CTime -> CTime # (-) :: CTime -> CTime -> CTime # (*) :: CTime -> CTime -> CTime # negate :: CTime -> CTime # abs :: CTime -> CTime # signum :: CTime -> CTime # fromInteger :: Integer -> CTime #
Num CUSeconds
Instance details Defined in Foreign.C.Types Methods (+) :: CUSeconds -> CUSeconds -> CUSeconds # (-) :: CUSeconds -> CUSeconds -> CUSeconds # (*) :: CUSeconds -> CUSeconds -> CUSeconds # negate :: CUSeconds -> CUSeconds # abs :: CUSeconds -> CUSeconds # signum :: CUSeconds -> CUSeconds # fromInteger :: Integer -> CUSeconds #
Num CSUSeconds
Instance details Defined in Foreign.C.Types Methods (+) :: CSUSeconds -> CSUSeconds -> CSUSeconds # (-) :: CSUSeconds -> CSUSeconds -> CSUSeconds # (*) :: CSUSeconds -> CSUSeconds -> CSUSeconds # negate :: CSUSeconds -> CSUSeconds # abs :: CSUSeconds -> CSUSeconds # signum :: CSUSeconds -> CSUSeconds # fromInteger :: Integer -> CSUSeconds #
Num CIntPtr
Instance details Defined in Foreign.C.Types Methods (+) :: CIntPtr -> CIntPtr -> CIntPtr # (-) :: CIntPtr -> CIntPtr -> CIntPtr # (*) :: CIntPtr -> CIntPtr -> CIntPtr # negate :: CIntPtr -> CIntPtr # abs :: CIntPtr -> CIntPtr # signum :: CIntPtr -> CIntPtr # fromInteger :: Integer -> CIntPtr #
Num CUIntPtr
Instance details Defined in Foreign.C.Types Methods (+) :: CUIntPtr -> CUIntPtr -> CUIntPtr # (-) :: CUIntPtr -> CUIntPtr -> CUIntPtr # (*) :: CUIntPtr -> CUIntPtr -> CUIntPtr # negate :: CUIntPtr -> CUIntPtr # abs :: CUIntPtr -> CUIntPtr # signum :: CUIntPtr -> CUIntPtr # fromInteger :: Integer -> CUIntPtr #
Num CIntMax
Instance details Defined in Foreign.C.Types Methods (+) :: CIntMax -> CIntMax -> CIntMax # (-) :: CIntMax -> CIntMax -> CIntMax # (*) :: CIntMax -> CIntMax -> CIntMax # negate :: CIntMax -> CIntMax # abs :: CIntMax -> CIntMax # signum :: CIntMax -> CIntMax # fromInteger :: Integer -> CIntMax #
Num CUIntMax
Instance details Defined in Foreign.C.Types Methods (+) :: CUIntMax -> CUIntMax -> CUIntMax # (-) :: CUIntMax -> CUIntMax -> CUIntMax # (*) :: CUIntMax -> CUIntMax -> CUIntMax # negate :: CUIntMax -> CUIntMax # abs :: CUIntMax -> CUIntMax # signum :: CUIntMax -> CUIntMax # fromInteger :: Integer -> CUIntMax #
Num TimeSpec
Instance details Defined in System.Clock Methods (+) :: TimeSpec -> TimeSpec -> TimeSpec # (-) :: TimeSpec -> TimeSpec -> TimeSpec # (*) :: TimeSpec -> TimeSpec -> TimeSpec # negate :: TimeSpec -> TimeSpec # abs :: TimeSpec -> TimeSpec # signum :: TimeSpec -> TimeSpec # fromInteger :: Integer -> TimeSpec #
Num PortNumber
Instance details Defined in Network.Socket.Types Methods (+) :: PortNumber -> PortNumber -> PortNumber # (-) :: PortNumber -> PortNumber -> PortNumber # (*) :: PortNumber -> PortNumber -> PortNumber # negate :: PortNumber -> PortNumber # abs :: PortNumber -> PortNumber # signum :: PortNumber -> PortNumber # fromInteger :: Integer -> PortNumber #
Num MsgFlag
Instance details Defined in Network.Socket.Flag Methods (+) :: MsgFlag -> MsgFlag -> MsgFlag # (-) :: MsgFlag -> MsgFlag -> MsgFlag # (*) :: MsgFlag -> MsgFlag -> MsgFlag # negate :: MsgFlag -> MsgFlag # abs :: MsgFlag -> MsgFlag # signum :: MsgFlag -> MsgFlag # fromInteger :: Integer -> MsgFlag #
Num OverflowNatural
Instance details Defined in Database.Persist.Class.PersistField Methods (+) :: OverflowNatural -> OverflowNatural -> OverflowNatural # (-) :: OverflowNatural -> OverflowNatural -> OverflowNatural # (*) :: OverflowNatural -> OverflowNatural -> OverflowNatural # negate :: OverflowNatural -> OverflowNatural # abs :: OverflowNatural -> OverflowNatural # signum :: OverflowNatural -> OverflowNatural # fromInteger :: Integer -> OverflowNatural #
Num PixelSize
Instance details Defined in Text.Internal.CssCommon Methods (+) :: PixelSize -> PixelSize -> PixelSize # (-) :: PixelSize -> PixelSize -> PixelSize # (*) :: PixelSize -> PixelSize -> PixelSize # negate :: PixelSize -> PixelSize # abs :: PixelSize -> PixelSize # signum :: PixelSize -> PixelSize # fromInteger :: Integer -> PixelSize #
Num ExSize
Instance details Defined in Text.Internal.CssCommon Methods (+) :: ExSize -> ExSize -> ExSize # (-) :: ExSize -> ExSize -> ExSize # (*) :: ExSize -> ExSize -> ExSize # negate :: ExSize -> ExSize # abs :: ExSize -> ExSize # signum :: ExSize -> ExSize # fromInteger :: Integer -> ExSize #
Num EmSize
Instance details Defined in Text.Internal.CssCommon Methods (+) :: EmSize -> EmSize -> EmSize # (-) :: EmSize -> EmSize -> EmSize # (*) :: EmSize -> EmSize -> EmSize # negate :: EmSize -> EmSize # abs :: EmSize -> EmSize # signum :: EmSize -> EmSize # fromInteger :: Integer -> EmSize #
Num AbsoluteSize
Instance details Defined in Text.Internal.CssCommon Methods (+) :: AbsoluteSize -> AbsoluteSize -> AbsoluteSize # (-) :: AbsoluteSize -> AbsoluteSize -> AbsoluteSize # (*) :: AbsoluteSize -> AbsoluteSize -> AbsoluteSize # negate :: AbsoluteSize -> AbsoluteSize # abs :: AbsoluteSize -> AbsoluteSize # signum :: AbsoluteSize -> AbsoluteSize # fromInteger :: Integer -> AbsoluteSize #
Num PercentageSize
Instance details Defined in Text.Internal.CssCommon Methods (+) :: PercentageSize -> PercentageSize -> PercentageSize # (-) :: PercentageSize -> PercentageSize -> PercentageSize # (*) :: PercentageSize -> PercentageSize -> PercentageSize # negate :: PercentageSize -> PercentageSize # abs :: PercentageSize -> PercentageSize # signum :: PercentageSize -> PercentageSize # fromInteger :: Integer -> PercentageSize #
Num NumThreads
Instance details Defined in Test.Tasty.Options.Core Methods (+) :: NumThreads -> NumThreads -> NumThreads # (-) :: NumThreads -> NumThreads -> NumThreads # (*) :: NumThreads -> NumThreads -> NumThreads # negate :: NumThreads -> NumThreads # abs :: NumThreads -> NumThreads # signum :: NumThreads -> NumThreads # fromInteger :: Integer -> NumThreads #
Num NominalDiffTime
Instance details Defined in Data.Time.Clock.Internal.NominalDiffTime Methods (+) :: NominalDiffTime -> NominalDiffTime -> NominalDiffTime # (-) :: NominalDiffTime -> NominalDiffTime -> NominalDiffTime # (*) :: NominalDiffTime -> NominalDiffTime -> NominalDiffTime # negate :: NominalDiffTime -> NominalDiffTime # abs :: NominalDiffTime -> NominalDiffTime # signum :: NominalDiffTime -> NominalDiffTime # fromInteger :: Integer -> NominalDiffTime #
Num DiffTime
Instance details Defined in Data.Time.Clock.Internal.DiffTime Methods (+) :: DiffTime -> DiffTime -> DiffTime # (-) :: DiffTime -> DiffTime -> DiffTime # (*) :: DiffTime -> DiffTime -> DiffTime # negate :: DiffTime -> DiffTime # abs :: DiffTime -> DiffTime # signum :: DiffTime -> DiffTime # fromInteger :: Integer -> DiffTime #
Num B
Instance details Defined in Data.Text.Short.Internal Methods (+) :: B -> B -> B # (-) :: B -> B -> B # (*) :: B -> B -> B # negate :: B -> B # abs :: B -> B # signum :: B -> B # fromInteger :: Integer -> B #
Num CodePoint
Instance details Defined in Data.Text.Encoding Methods (+) :: CodePoint -> CodePoint -> CodePoint # (-) :: CodePoint -> CodePoint -> CodePoint # (*) :: CodePoint -> CodePoint -> CodePoint # negate :: CodePoint -> CodePoint # abs :: CodePoint -> CodePoint # signum :: CodePoint -> CodePoint # fromInteger :: Integer -> CodePoint #
Num DecoderState
Instance details Defined in Data.Text.Encoding Methods (+) :: DecoderState -> DecoderState -> DecoderState # (-) :: DecoderState -> DecoderState -> DecoderState # (*) :: DecoderState -> DecoderState -> DecoderState # negate :: DecoderState -> DecoderState # abs :: DecoderState -> DecoderState # signum :: DecoderState -> DecoderState # fromInteger :: Integer -> DecoderState #
Integral a => Num (Ratio a)	Since: base-2.0.1
Instance details Defined in GHC.Real Methods (+) :: Ratio a -> Ratio a -> Ratio a # (-) :: Ratio a -> Ratio a -> Ratio a # (*) :: Ratio a -> Ratio a -> Ratio a # negate :: Ratio a -> Ratio a # abs :: Ratio a -> Ratio a # signum :: Ratio a -> Ratio a # fromInteger :: Integer -> Ratio a #
Integral i => Num (DecimalRaw i)
Instance details Defined in Data.Decimal Methods (+) :: DecimalRaw i -> DecimalRaw i -> DecimalRaw i # (-) :: DecimalRaw i -> DecimalRaw i -> DecimalRaw i # (*) :: DecimalRaw i -> DecimalRaw i -> DecimalRaw i # negate :: DecimalRaw i -> DecimalRaw i # abs :: DecimalRaw i -> DecimalRaw i # signum :: DecimalRaw i -> DecimalRaw i # fromInteger :: Integer -> DecimalRaw i #
RealFloat a => Num (Complex a)	Since: base-2.1
Instance details Defined in Data.Complex Methods (+) :: Complex a -> Complex a -> Complex a # (-) :: Complex a -> Complex a -> Complex a # (*) :: Complex a -> Complex a -> Complex a # negate :: Complex a -> Complex a # abs :: Complex a -> Complex a # signum :: Complex a -> Complex a # fromInteger :: Integer -> Complex a #
Num a => Num (Min a)	Since: base-4.9.0.0
Instance details Defined in Data.Semigroup Methods (+) :: Min a -> Min a -> Min a # (-) :: Min a -> Min a -> Min a # (*) :: Min a -> Min a -> Min a # negate :: Min a -> Min a # abs :: Min a -> Min a # signum :: Min a -> Min a # fromInteger :: Integer -> Min a #
Num a => Num (Max a)	Since: base-4.9.0.0
Instance details Defined in Data.Semigroup Methods (+) :: Max a -> Max a -> Max a # (-) :: Max a -> Max a -> Max a # (*) :: Max a -> Max a -> Max a # negate :: Max a -> Max a # abs :: Max a -> Max a # signum :: Max a -> Max a # fromInteger :: Integer -> Max a #
Num a => Num (Identity a)	Since: base-4.9.0.0
Instance details Defined in Data.Functor.Identity Methods (+) :: Identity a -> Identity a -> Identity a # (-) :: Identity a -> Identity a -> Identity a # (*) :: Identity a -> Identity a -> Identity a # negate :: Identity a -> Identity a # abs :: Identity a -> Identity a # signum :: Identity a -> Identity a # fromInteger :: Integer -> Identity a #
Num a => Num (Sum a)	Since: base-4.7.0.0
Instance details Defined in Data.Semigroup.Internal Methods (+) :: Sum a -> Sum a -> Sum a # (-) :: Sum a -> Sum a -> Sum a # (*) :: Sum a -> Sum a -> Sum a # negate :: Sum a -> Sum a # abs :: Sum a -> Sum a # signum :: Sum a -> Sum a # fromInteger :: Integer -> Sum a #
Num a => Num (Product a)	Since: base-4.7.0.0
Instance details Defined in Data.Semigroup.Internal Methods (+) :: Product a -> Product a -> Product a # (-) :: Product a -> Product a -> Product a # (*) :: Product a -> Product a -> Product a # negate :: Product a -> Product a # abs :: Product a -> Product a # signum :: Product a -> Product a # fromInteger :: Integer -> Product a #
Num a => Num (Down a)	Since: base-4.11.0.0
Instance details Defined in Data.Ord Methods (+) :: Down a -> Down a -> Down a # (-) :: Down a -> Down a -> Down a # (*) :: Down a -> Down a -> Down a # negate :: Down a -> Down a # abs :: Down a -> Down a # signum :: Down a -> Down a # fromInteger :: Integer -> Down a #
Num (Offset ty)
Instance details Defined in Basement.Types.OffsetSize Methods (+) :: Offset ty -> Offset ty -> Offset ty # (-) :: Offset ty -> Offset ty -> Offset ty # (*) :: Offset ty -> Offset ty -> Offset ty # negate :: Offset ty -> Offset ty # abs :: Offset ty -> Offset ty # signum :: Offset ty -> Offset ty # fromInteger :: Integer -> Offset ty #
Num (CountOf ty)
Instance details Defined in Basement.Types.OffsetSize Methods (+) :: CountOf ty -> CountOf ty -> CountOf ty # (-) :: CountOf ty -> CountOf ty -> CountOf ty # (*) :: CountOf ty -> CountOf ty -> CountOf ty # negate :: CountOf ty -> CountOf ty # abs :: CountOf ty -> CountOf ty # signum :: CountOf ty -> CountOf ty # fromInteger :: Integer -> CountOf ty #
(KnownNat n, NatWithinBound Word64 n) => Num (Zn64 n)
Instance details Defined in Basement.Bounded Methods (+) :: Zn64 n -> Zn64 n -> Zn64 n # (-) :: Zn64 n -> Zn64 n -> Zn64 n # (*) :: Zn64 n -> Zn64 n -> Zn64 n # negate :: Zn64 n -> Zn64 n # abs :: Zn64 n -> Zn64 n # signum :: Zn64 n -> Zn64 n # fromInteger :: Integer -> Zn64 n #
KnownNat n => Num (Zn n)
Instance details Defined in Basement.Bounded Methods (+) :: Zn n -> Zn n -> Zn n # (-) :: Zn n -> Zn n -> Zn n # (*) :: Zn n -> Zn n -> Zn n # negate :: Zn n -> Zn n # abs :: Zn n -> Zn n # signum :: Zn n -> Zn n # fromInteger :: Integer -> Zn n #
HasResolution a => Num (Fixed a)	Since: base-2.1
Instance details Defined in Data.Fixed Methods (+) :: Fixed a -> Fixed a -> Fixed a # (-) :: Fixed a -> Fixed a -> Fixed a # (*) :: Fixed a -> Fixed a -> Fixed a # negate :: Fixed a -> Fixed a # abs :: Fixed a -> Fixed a # signum :: Fixed a -> Fixed a # fromInteger :: Integer -> Fixed a #
Num a => Num (Const a b)	Since: base-4.9.0.0
Instance details Defined in Data.Functor.Const Methods (+) :: Const a b -> Const a b -> Const a b # (-) :: Const a b -> Const a b -> Const a b # (*) :: Const a b -> Const a b -> Const a b # negate :: Const a b -> Const a b # abs :: Const a b -> Const a b # signum :: Const a b -> Const a b # fromInteger :: Integer -> Const a b #
(Applicative f, Num a) => Num (Ap f a)	Since: base-4.12.0.0
Instance details Defined in Data.Monoid Methods (+) :: Ap f a -> Ap f a -> Ap f a # (-) :: Ap f a -> Ap f a -> Ap f a # (*) :: Ap f a -> Ap f a -> Ap f a # negate :: Ap f a -> Ap f a # abs :: Ap f a -> Ap f a # signum :: Ap f a -> Ap f a # fromInteger :: Integer -> Ap f a #
Num (f a) => Num (Alt f a)	Since: base-4.8.0.0
Instance details Defined in Data.Semigroup.Internal Methods (+) :: Alt f a -> Alt f a -> Alt f a # (-) :: Alt f a -> Alt f a -> Alt f a # (*) :: Alt f a -> Alt f a -> Alt f a # negate :: Alt f a -> Alt f a # abs :: Alt f a -> Alt f a # signum :: Alt f a -> Alt f a # fromInteger :: Integer -> Alt f a #
Num a => Num (Tagged s a)
Instance details Defined in Data.Tagged Methods (+) :: Tagged s a -> Tagged s a -> Tagged s a # (-) :: Tagged s a -> Tagged s a -> Tagged s a # (*) :: Tagged s a -> Tagged s a -> Tagged s a # negate :: Tagged s a -> Tagged s a # abs :: Tagged s a -> Tagged s a # signum :: Tagged s a -> Tagged s a # fromInteger :: Integer -> Tagged s a #

class Eq a => Ord a where #

The Ord class is used for totally ordered datatypes.

Instances of Ord can be derived for any user-defined datatype whose constituent types are in Ord. The declared order of the constructors in the data declaration determines the ordering in derived Ord instances. The Ordering datatype allows a single comparison to determine the precise ordering of two objects.

The Haskell Report defines no laws for Ord. However, <= is customarily expected to implement a non-strict partial order and have the following properties:

Transitivity: if x <= y && y <= z = True, then x <= z = True
Reflexivity: x <= x = True
Antisymmetry: if x <= y && y <= x = True, then x == y = True

Note that the following operator interactions are expected to hold:

x >= y = y <= x
x < y = x <= y && x /= y
x > y = y < x
x < y = compare x y == LT
x > y = compare x y == GT
x == y = compare x y == EQ
min x y == if x <= y then x else y = True
max x y == if x >= y then x else y = True

Note that (7.) and (8.) do not require min and max to return either of their arguments. The result is merely required to equal one of the arguments in terms of (==).

Minimal complete definition: either compare or <=. Using compare can be more efficient for complex types.

Minimal complete definition

compare | (<=)

Methods

compare :: a -> a -> Ordering #

(<) :: a -> a -> Bool infix 4 #

(<=) :: a -> a -> Bool infix 4 #

(>) :: a -> a -> Bool infix 4 #

(>=) :: a -> a -> Bool infix 4 #

max :: a -> a -> a #

min :: a -> a -> a #

Instances

Instances details

Ord Bool
Instance details Defined in GHC.Classes Methods compare :: Bool -> Bool -> Ordering # (<) :: Bool -> Bool -> Bool # (<=) :: Bool -> Bool -> Bool # (>) :: Bool -> Bool -> Bool # (>=) :: Bool -> Bool -> Bool # max :: Bool -> Bool -> Bool # min :: Bool -> Bool -> Bool #
Ord Char
Instance details Defined in GHC.Classes Methods compare :: Char -> Char -> Ordering # (<) :: Char -> Char -> Bool # (<=) :: Char -> Char -> Bool # (>) :: Char -> Char -> Bool # (>=) :: Char -> Char -> Bool # max :: Char -> Char -> Char # min :: Char -> Char -> Char #
Ord Double	Note that due to the presence of `NaN`, `Double`'s `Ord` instance does not satisfy reflexivity. `>>>` `0/0 <= (0/0 :: Double)`False Also note that, due to the same, `Ord`'s operator interactions are not respected by `Double`'s instance: `>>>` `(0/0 :: Double) > 1`False `>>>` `compare (0/0 :: Double) 1`GT
Instance details Defined in GHC.Classes Methods compare :: Double -> Double -> Ordering # (<) :: Double -> Double -> Bool # (<=) :: Double -> Double -> Bool # (>) :: Double -> Double -> Bool # (>=) :: Double -> Double -> Bool # max :: Double -> Double -> Double # min :: Double -> Double -> Double #
Ord Float	Note that due to the presence of `NaN`, `Float`'s `Ord` instance does not satisfy reflexivity. `>>>` `0/0 <= (0/0 :: Float)`False Also note that, due to the same, `Ord`'s operator interactions are not respected by `Float`'s instance: `>>>` `(0/0 :: Float) > 1`False `>>>` `compare (0/0 :: Float) 1`GT
Instance details Defined in GHC.Classes Methods compare :: Float -> Float -> Ordering # (<) :: Float -> Float -> Bool # (<=) :: Float -> Float -> Bool # (>) :: Float -> Float -> Bool # (>=) :: Float -> Float -> Bool # max :: Float -> Float -> Float # min :: Float -> Float -> Float #
Ord Int
Instance details Defined in GHC.Classes Methods compare :: Int -> Int -> Ordering # (<) :: Int -> Int -> Bool # (<=) :: Int -> Int -> Bool # (>) :: Int -> Int -> Bool # (>=) :: Int -> Int -> Bool # max :: Int -> Int -> Int # min :: Int -> Int -> Int #
Ord Int8	Since: base-2.1
Instance details Defined in GHC.Int Methods compare :: Int8 -> Int8 -> Ordering # (<) :: Int8 -> Int8 -> Bool # (<=) :: Int8 -> Int8 -> Bool # (>) :: Int8 -> Int8 -> Bool # (>=) :: Int8 -> Int8 -> Bool # max :: Int8 -> Int8 -> Int8 # min :: Int8 -> Int8 -> Int8 #
Ord Int16	Since: base-2.1
Instance details Defined in GHC.Int Methods compare :: Int16 -> Int16 -> Ordering # (<) :: Int16 -> Int16 -> Bool # (<=) :: Int16 -> Int16 -> Bool # (>) :: Int16 -> Int16 -> Bool # (>=) :: Int16 -> Int16 -> Bool # max :: Int16 -> Int16 -> Int16 # min :: Int16 -> Int16 -> Int16 #
Ord Int32	Since: base-2.1
Instance details Defined in GHC.Int Methods compare :: Int32 -> Int32 -> Ordering # (<) :: Int32 -> Int32 -> Bool # (<=) :: Int32 -> Int32 -> Bool # (>) :: Int32 -> Int32 -> Bool # (>=) :: Int32 -> Int32 -> Bool # max :: Int32 -> Int32 -> Int32 # min :: Int32 -> Int32 -> Int32 #
Ord Int64	Since: base-2.1
Instance details Defined in GHC.Int Methods compare :: Int64 -> Int64 -> Ordering # (<) :: Int64 -> Int64 -> Bool # (<=) :: Int64 -> Int64 -> Bool # (>) :: Int64 -> Int64 -> Bool # (>=) :: Int64 -> Int64 -> Bool # max :: Int64 -> Int64 -> Int64 # min :: Int64 -> Int64 -> Int64 #
Ord Integer
Instance details Defined in GHC.Integer.Type Methods compare :: Integer -> Integer -> Ordering # (<) :: Integer -> Integer -> Bool # (<=) :: Integer -> Integer -> Bool # (>) :: Integer -> Integer -> Bool # (>=) :: Integer -> Integer -> Bool # max :: Integer -> Integer -> Integer # min :: Integer -> Integer -> Integer #
Ord Natural	Since: base-4.8.0.0
Instance details Defined in GHC.Natural Methods compare :: Natural -> Natural -> Ordering # (<) :: Natural -> Natural -> Bool # (<=) :: Natural -> Natural -> Bool # (>) :: Natural -> Natural -> Bool # (>=) :: Natural -> Natural -> Bool # max :: Natural -> Natural -> Natural # min :: Natural -> Natural -> Natural #
Ord Ordering
Instance details Defined in GHC.Classes Methods compare :: Ordering -> Ordering -> Ordering # (<) :: Ordering -> Ordering -> Bool # (<=) :: Ordering -> Ordering -> Bool # (>) :: Ordering -> Ordering -> Bool # (>=) :: Ordering -> Ordering -> Bool # max :: Ordering -> Ordering -> Ordering # min :: Ordering -> Ordering -> Ordering #
Ord Word
Instance details Defined in GHC.Classes Methods compare :: Word -> Word -> Ordering # (<) :: Word -> Word -> Bool # (<=) :: Word -> Word -> Bool # (>) :: Word -> Word -> Bool # (>=) :: Word -> Word -> Bool # max :: Word -> Word -> Word # min :: Word -> Word -> Word #
Ord Word8	Since: base-2.1
Instance details Defined in GHC.Word Methods compare :: Word8 -> Word8 -> Ordering # (<) :: Word8 -> Word8 -> Bool # (<=) :: Word8 -> Word8 -> Bool # (>) :: Word8 -> Word8 -> Bool # (>=) :: Word8 -> Word8 -> Bool # max :: Word8 -> Word8 -> Word8 # min :: Word8 -> Word8 -> Word8 #
Ord Word16	Since: base-2.1
Instance details Defined in GHC.Word Methods compare :: Word16 -> Word16 -> Ordering # (<) :: Word16 -> Word16 -> Bool # (<=) :: Word16 -> Word16 -> Bool # (>) :: Word16 -> Word16 -> Bool # (>=) :: Word16 -> Word16 -> Bool # max :: Word16 -> Word16 -> Word16 # min :: Word16 -> Word16 -> Word16 #
Ord Word32	Since: base-2.1
Instance details Defined in GHC.Word Methods compare :: Word32 -> Word32 -> Ordering # (<) :: Word32 -> Word32 -> Bool # (<=) :: Word32 -> Word32 -> Bool # (>) :: Word32 -> Word32 -> Bool # (>=) :: Word32 -> Word32 -> Bool # max :: Word32 -> Word32 -> Word32 # min :: Word32 -> Word32 -> Word32 #
Ord Word64	Since: base-2.1
Instance details Defined in GHC.Word Methods compare :: Word64 -> Word64 -> Ordering # (<) :: Word64 -> Word64 -> Bool # (<=) :: Word64 -> Word64 -> Bool # (>) :: Word64 -> Word64 -> Bool # (>=) :: Word64 -> Word64 -> Bool # max :: Word64 -> Word64 -> Word64 # min :: Word64 -> Word64 -> Word64 #
Ord SomeTypeRep
Instance details Defined in Data.Typeable.Internal Methods compare :: SomeTypeRep -> SomeTypeRep -> Ordering # (<) :: SomeTypeRep -> SomeTypeRep -> Bool # (<=) :: SomeTypeRep -> SomeTypeRep -> Bool # (>) :: SomeTypeRep -> SomeTypeRep -> Bool # (>=) :: SomeTypeRep -> SomeTypeRep -> Bool # max :: SomeTypeRep -> SomeTypeRep -> SomeTypeRep # min :: SomeTypeRep -> SomeTypeRep -> SomeTypeRep #
Ord Exp
Instance details Defined in Language.Haskell.TH.Syntax Methods compare :: Exp -> Exp -> Ordering # (<) :: Exp -> Exp -> Bool # (<=) :: Exp -> Exp -> Bool # (>) :: Exp -> Exp -> Bool # (>=) :: Exp -> Exp -> Bool # max :: Exp -> Exp -> Exp # min :: Exp -> Exp -> Exp #
Ord Match
Instance details Defined in Language.Haskell.TH.Syntax Methods compare :: Match -> Match -> Ordering # (<) :: Match -> Match -> Bool # (<=) :: Match -> Match -> Bool # (>) :: Match -> Match -> Bool # (>=) :: Match -> Match -> Bool # max :: Match -> Match -> Match # min :: Match -> Match -> Match #
Ord Clause
Instance details Defined in Language.Haskell.TH.Syntax Methods compare :: Clause -> Clause -> Ordering # (<) :: Clause -> Clause -> Bool # (<=) :: Clause -> Clause -> Bool # (>) :: Clause -> Clause -> Bool # (>=) :: Clause -> Clause -> Bool # max :: Clause -> Clause -> Clause # min :: Clause -> Clause -> Clause #
Ord Pat
Instance details Defined in Language.Haskell.TH.Syntax Methods compare :: Pat -> Pat -> Ordering # (<) :: Pat -> Pat -> Bool # (<=) :: Pat -> Pat -> Bool # (>) :: Pat -> Pat -> Bool # (>=) :: Pat -> Pat -> Bool # max :: Pat -> Pat -> Pat # min :: Pat -> Pat -> Pat #
Ord Type
Instance details Defined in Language.Haskell.TH.Syntax Methods compare :: Type -> Type -> Ordering # (<) :: Type -> Type -> Bool # (<=) :: Type -> Type -> Bool # (>) :: Type -> Type -> Bool # (>=) :: Type -> Type -> Bool # max :: Type -> Type -> Type # min :: Type -> Type -> Type #
Ord Dec
Instance details Defined in Language.Haskell.TH.Syntax Methods compare :: Dec -> Dec -> Ordering # (<) :: Dec -> Dec -> Bool # (<=) :: Dec -> Dec -> Bool # (>) :: Dec -> Dec -> Bool # (>=) :: Dec -> Dec -> Bool # max :: Dec -> Dec -> Dec # min :: Dec -> Dec -> Dec #
Ord Name
Instance details Defined in Language.Haskell.TH.Syntax Methods compare :: Name -> Name -> Ordering # (<) :: Name -> Name -> Bool # (<=) :: Name -> Name -> Bool # (>) :: Name -> Name -> Bool # (>=) :: Name -> Name -> Bool # max :: Name -> Name -> Name # min :: Name -> Name -> Name #
Ord FunDep
Instance details Defined in Language.Haskell.TH.Syntax Methods compare :: FunDep -> FunDep -> Ordering # (<) :: FunDep -> FunDep -> Bool # (<=) :: FunDep -> FunDep -> Bool # (>) :: FunDep -> FunDep -> Bool # (>=) :: FunDep -> FunDep -> Bool # max :: FunDep -> FunDep -> FunDep # min :: FunDep -> FunDep -> FunDep #
Ord InjectivityAnn
Instance details Defined in Language.Haskell.TH.Syntax Methods compare :: InjectivityAnn -> InjectivityAnn -> Ordering # (<) :: InjectivityAnn -> InjectivityAnn -> Bool # (<=) :: InjectivityAnn -> InjectivityAnn -> Bool # (>) :: InjectivityAnn -> InjectivityAnn -> Bool # (>=) :: InjectivityAnn -> InjectivityAnn -> Bool # max :: InjectivityAnn -> InjectivityAnn -> InjectivityAnn # min :: InjectivityAnn -> InjectivityAnn -> InjectivityAnn #
Ord Overlap
Instance details Defined in Language.Haskell.TH.Syntax Methods compare :: Overlap -> Overlap -> Ordering # (<) :: Overlap -> Overlap -> Bool # (<=) :: Overlap -> Overlap -> Bool # (>) :: Overlap -> Overlap -> Bool # (>=) :: Overlap -> Overlap -> Bool # max :: Overlap -> Overlap -> Overlap # min :: Overlap -> Overlap -> Overlap #
Ord ()
Instance details Defined in GHC.Classes Methods compare :: () -> () -> Ordering # (<) :: () -> () -> Bool # (<=) :: () -> () -> Bool # (>) :: () -> () -> Bool # (>=) :: () -> () -> Bool # max :: () -> () -> () # min :: () -> () -> () #
Ord TyCon
Instance details Defined in GHC.Classes Methods compare :: TyCon -> TyCon -> Ordering # (<) :: TyCon -> TyCon -> Bool # (<=) :: TyCon -> TyCon -> Bool # (>) :: TyCon -> TyCon -> Bool # (>=) :: TyCon -> TyCon -> Bool # max :: TyCon -> TyCon -> TyCon # min :: TyCon -> TyCon -> TyCon #
Ord Version	Since: base-2.1
Instance details Defined in Data.Version Methods compare :: Version -> Version -> Ordering # (<) :: Version -> Version -> Bool # (<=) :: Version -> Version -> Bool # (>) :: Version -> Version -> Bool # (>=) :: Version -> Version -> Bool # max :: Version -> Version -> Version # min :: Version -> Version -> Version #
Ord ByteString
Instance details Defined in Data.ByteString.Internal Methods compare :: ByteString -> ByteString -> Ordering # (<) :: ByteString -> ByteString -> Bool # (<=) :: ByteString -> ByteString -> Bool # (>) :: ByteString -> ByteString -> Bool # (>=) :: ByteString -> ByteString -> Bool # max :: ByteString -> ByteString -> ByteString # min :: ByteString -> ByteString -> ByteString #
Ord ByteString
Instance details Defined in Data.ByteString.Lazy.Internal Methods compare :: ByteString -> ByteString -> Ordering # (<) :: ByteString -> ByteString -> Bool # (<=) :: ByteString -> ByteString -> Bool # (>) :: ByteString -> ByteString -> Bool # (>=) :: ByteString -> ByteString -> Bool # max :: ByteString -> ByteString -> ByteString # min :: ByteString -> ByteString -> ByteString #
Ord Builder
Instance details Defined in Data.Text.Internal.Builder Methods compare :: Builder -> Builder -> Ordering # (<) :: Builder -> Builder -> Bool # (<=) :: Builder -> Builder -> Bool # (>) :: Builder -> Builder -> Bool # (>=) :: Builder -> Builder -> Bool # max :: Builder -> Builder -> Builder # min :: Builder -> Builder -> Builder #
Ord Scientific	Scientific numbers can be safely compared for ordering. No magnitude `10^e` is calculated so there's no risk of a blowup in space or time when comparing scientific numbers coming from untrusted sources.
Instance details Defined in Data.Scientific Methods compare :: Scientific -> Scientific -> Ordering # (<) :: Scientific -> Scientific -> Bool # (<=) :: Scientific -> Scientific -> Bool # (>) :: Scientific -> Scientific -> Bool # (>=) :: Scientific -> Scientific -> Bool # max :: Scientific -> Scientific -> Scientific # min :: Scientific -> Scientific -> Scientific #
Ord UTCTime
Instance details Defined in Data.Time.Clock.Internal.UTCTime Methods compare :: UTCTime -> UTCTime -> Ordering # (<) :: UTCTime -> UTCTime -> Bool # (<=) :: UTCTime -> UTCTime -> Bool # (>) :: UTCTime -> UTCTime -> Bool # (>=) :: UTCTime -> UTCTime -> Bool # max :: UTCTime -> UTCTime -> UTCTime # min :: UTCTime -> UTCTime -> UTCTime #
Ord JSONPathElement
Instance details Defined in Data.Aeson.Types.Internal Methods compare :: JSONPathElement -> JSONPathElement -> Ordering # (<) :: JSONPathElement -> JSONPathElement -> Bool # (<=) :: JSONPathElement -> JSONPathElement -> Bool # (>) :: JSONPathElement -> JSONPathElement -> Bool # (>=) :: JSONPathElement -> JSONPathElement -> Bool # max :: JSONPathElement -> JSONPathElement -> JSONPathElement # min :: JSONPathElement -> JSONPathElement -> JSONPathElement #
Ord Value	The ordering is total, consistent with `Eq` instance. However, nothing else about the ordering is specified, and it may change from environment to environment and version to version of either this package or its dependencies (`hashable` and 'unordered-containers'). Since: aeson-1.5.2.0
Instance details Defined in Data.Aeson.Types.Internal Methods compare :: Value -> Value -> Ordering # (<) :: Value -> Value -> Bool # (<=) :: Value -> Value -> Bool # (>) :: Value -> Value -> Bool # (>=) :: Value -> Value -> Bool # max :: Value -> Value -> Value # min :: Value -> Value -> Value #
Ord DotNetTime
Instance details Defined in Data.Aeson.Types.Internal Methods compare :: DotNetTime -> DotNetTime -> Ordering # (<) :: DotNetTime -> DotNetTime -> Bool # (<=) :: DotNetTime -> DotNetTime -> Bool # (>) :: DotNetTime -> DotNetTime -> Bool # (>=) :: DotNetTime -> DotNetTime -> Bool # max :: DotNetTime -> DotNetTime -> DotNetTime # min :: DotNetTime -> DotNetTime -> DotNetTime #
Ord Pos
Instance details Defined in Data.Attoparsec.Internal.Types Methods compare :: Pos -> Pos -> Ordering # (<) :: Pos -> Pos -> Bool # (<=) :: Pos -> Pos -> Bool # (>) :: Pos -> Pos -> Bool # (>=) :: Pos -> Pos -> Bool # max :: Pos -> Pos -> Pos # min :: Pos -> Pos -> Pos #
Ord Void	Since: base-4.8.0.0
Instance details Defined in Data.Void Methods compare :: Void -> Void -> Ordering # (<) :: Void -> Void -> Bool # (<=) :: Void -> Void -> Bool # (>) :: Void -> Void -> Bool # (>=) :: Void -> Void -> Bool # max :: Void -> Void -> Void # min :: Void -> Void -> Void #
Ord AsyncException	Since: base-4.2.0.0
Instance details Defined in GHC.IO.Exception Methods compare :: AsyncException -> AsyncException -> Ordering # (<) :: AsyncException -> AsyncException -> Bool # (<=) :: AsyncException -> AsyncException -> Bool # (>) :: AsyncException -> AsyncException -> Bool # (>=) :: AsyncException -> AsyncException -> Bool # max :: AsyncException -> AsyncException -> AsyncException # min :: AsyncException -> AsyncException -> AsyncException #
Ord ArrayException	Since: base-4.2.0.0
Instance details Defined in GHC.IO.Exception Methods compare :: ArrayException -> ArrayException -> Ordering # (<) :: ArrayException -> ArrayException -> Bool # (<=) :: ArrayException -> ArrayException -> Bool # (>) :: ArrayException -> ArrayException -> Bool # (>=) :: ArrayException -> ArrayException -> Bool # max :: ArrayException -> ArrayException -> ArrayException # min :: ArrayException -> ArrayException -> ArrayException #
Ord ExitCode
Instance details Defined in GHC.IO.Exception Methods compare :: ExitCode -> ExitCode -> Ordering # (<) :: ExitCode -> ExitCode -> Bool # (<=) :: ExitCode -> ExitCode -> Bool # (>) :: ExitCode -> ExitCode -> Bool # (>=) :: ExitCode -> ExitCode -> Bool # max :: ExitCode -> ExitCode -> ExitCode # min :: ExitCode -> ExitCode -> ExitCode #
Ord BufferMode	Since: base-4.2.0.0
Instance details Defined in GHC.IO.Handle.Types Methods compare :: BufferMode -> BufferMode -> Ordering # (<) :: BufferMode -> BufferMode -> Bool # (<=) :: BufferMode -> BufferMode -> Bool # (>) :: BufferMode -> BufferMode -> Bool # (>=) :: BufferMode -> BufferMode -> Bool # max :: BufferMode -> BufferMode -> BufferMode # min :: BufferMode -> BufferMode -> BufferMode #
Ord Newline	Since: base-4.3.0.0
Instance details Defined in GHC.IO.Handle.Types Methods compare :: Newline -> Newline -> Ordering # (<) :: Newline -> Newline -> Bool # (<=) :: Newline -> Newline -> Bool # (>) :: Newline -> Newline -> Bool # (>=) :: Newline -> Newline -> Bool # max :: Newline -> Newline -> Newline # min :: Newline -> Newline -> Newline #
Ord NewlineMode	Since: base-4.3.0.0
Instance details Defined in GHC.IO.Handle.Types Methods compare :: NewlineMode -> NewlineMode -> Ordering # (<) :: NewlineMode -> NewlineMode -> Bool # (<=) :: NewlineMode -> NewlineMode -> Bool # (>) :: NewlineMode -> NewlineMode -> Bool # (>=) :: NewlineMode -> NewlineMode -> Bool # max :: NewlineMode -> NewlineMode -> NewlineMode # min :: NewlineMode -> NewlineMode -> NewlineMode #
Ord ArithException	Since: base-3.0
Instance details Defined in GHC.Exception.Type Methods compare :: ArithException -> ArithException -> Ordering # (<) :: ArithException -> ArithException -> Bool # (<=) :: ArithException -> ArithException -> Bool # (>) :: ArithException -> ArithException -> Bool # (>=) :: ArithException -> ArithException -> Bool # max :: ArithException -> ArithException -> ArithException # min :: ArithException -> ArithException -> ArithException #
Ord All	Since: base-2.1
Instance details Defined in Data.Semigroup.Internal Methods compare :: All -> All -> Ordering # (<) :: All -> All -> Bool # (<=) :: All -> All -> Bool # (>) :: All -> All -> Bool # (>=) :: All -> All -> Bool # max :: All -> All -> All # min :: All -> All -> All #
Ord Any	Since: base-2.1
Instance details Defined in Data.Semigroup.Internal Methods compare :: Any -> Any -> Ordering # (<) :: Any -> Any -> Bool # (<=) :: Any -> Any -> Bool # (>) :: Any -> Any -> Bool # (>=) :: Any -> Any -> Bool # max :: Any -> Any -> Any # min :: Any -> Any -> Any #
Ord Fixity	Since: base-4.6.0.0
Instance details Defined in GHC.Generics Methods compare :: Fixity -> Fixity -> Ordering # (<) :: Fixity -> Fixity -> Bool # (<=) :: Fixity -> Fixity -> Bool # (>) :: Fixity -> Fixity -> Bool # (>=) :: Fixity -> Fixity -> Bool # max :: Fixity -> Fixity -> Fixity # min :: Fixity -> Fixity -> Fixity #
Ord Associativity	Since: base-4.6.0.0
Instance details Defined in GHC.Generics Methods compare :: Associativity -> Associativity -> Ordering # (<) :: Associativity -> Associativity -> Bool # (<=) :: Associativity -> Associativity -> Bool # (>) :: Associativity -> Associativity -> Bool # (>=) :: Associativity -> Associativity -> Bool # max :: Associativity -> Associativity -> Associativity # min :: Associativity -> Associativity -> Associativity #
Ord SourceUnpackedness	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Methods compare :: SourceUnpackedness -> SourceUnpackedness -> Ordering # (<) :: SourceUnpackedness -> SourceUnpackedness -> Bool # (<=) :: SourceUnpackedness -> SourceUnpackedness -> Bool # (>) :: SourceUnpackedness -> SourceUnpackedness -> Bool # (>=) :: SourceUnpackedness -> SourceUnpackedness -> Bool # max :: SourceUnpackedness -> SourceUnpackedness -> SourceUnpackedness # min :: SourceUnpackedness -> SourceUnpackedness -> SourceUnpackedness #
Ord SourceStrictness	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Methods compare :: SourceStrictness -> SourceStrictness -> Ordering # (<) :: SourceStrictness -> SourceStrictness -> Bool # (<=) :: SourceStrictness -> SourceStrictness -> Bool # (>) :: SourceStrictness -> SourceStrictness -> Bool # (>=) :: SourceStrictness -> SourceStrictness -> Bool # max :: SourceStrictness -> SourceStrictness -> SourceStrictness # min :: SourceStrictness -> SourceStrictness -> SourceStrictness #
Ord DecidedStrictness	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Methods compare :: DecidedStrictness -> DecidedStrictness -> Ordering # (<) :: DecidedStrictness -> DecidedStrictness -> Bool # (<=) :: DecidedStrictness -> DecidedStrictness -> Bool # (>) :: DecidedStrictness -> DecidedStrictness -> Bool # (>=) :: DecidedStrictness -> DecidedStrictness -> Bool # max :: DecidedStrictness -> DecidedStrictness -> DecidedStrictness # min :: DecidedStrictness -> DecidedStrictness -> DecidedStrictness #
Ord SomeSymbol	Since: base-4.7.0.0
Instance details Defined in GHC.TypeLits Methods compare :: SomeSymbol -> SomeSymbol -> Ordering # (<) :: SomeSymbol -> SomeSymbol -> Bool # (<=) :: SomeSymbol -> SomeSymbol -> Bool # (>) :: SomeSymbol -> SomeSymbol -> Bool # (>=) :: SomeSymbol -> SomeSymbol -> Bool # max :: SomeSymbol -> SomeSymbol -> SomeSymbol # min :: SomeSymbol -> SomeSymbol -> SomeSymbol #
Ord SomeNat	Since: base-4.7.0.0
Instance details Defined in GHC.TypeNats Methods compare :: SomeNat -> SomeNat -> Ordering # (<) :: SomeNat -> SomeNat -> Bool # (<=) :: SomeNat -> SomeNat -> Bool # (>) :: SomeNat -> SomeNat -> Bool # (>=) :: SomeNat -> SomeNat -> Bool # max :: SomeNat -> SomeNat -> SomeNat # min :: SomeNat -> SomeNat -> SomeNat #
Ord CChar
Instance details Defined in Foreign.C.Types Methods compare :: CChar -> CChar -> Ordering # (<) :: CChar -> CChar -> Bool # (<=) :: CChar -> CChar -> Bool # (>) :: CChar -> CChar -> Bool # (>=) :: CChar -> CChar -> Bool # max :: CChar -> CChar -> CChar # min :: CChar -> CChar -> CChar #
Ord CSChar
Instance details Defined in Foreign.C.Types Methods compare :: CSChar -> CSChar -> Ordering # (<) :: CSChar -> CSChar -> Bool # (<=) :: CSChar -> CSChar -> Bool # (>) :: CSChar -> CSChar -> Bool # (>=) :: CSChar -> CSChar -> Bool # max :: CSChar -> CSChar -> CSChar # min :: CSChar -> CSChar -> CSChar #
Ord CUChar
Instance details Defined in Foreign.C.Types Methods compare :: CUChar -> CUChar -> Ordering # (<) :: CUChar -> CUChar -> Bool # (<=) :: CUChar -> CUChar -> Bool # (>) :: CUChar -> CUChar -> Bool # (>=) :: CUChar -> CUChar -> Bool # max :: CUChar -> CUChar -> CUChar # min :: CUChar -> CUChar -> CUChar #
Ord CShort
Instance details Defined in Foreign.C.Types Methods compare :: CShort -> CShort -> Ordering # (<) :: CShort -> CShort -> Bool # (<=) :: CShort -> CShort -> Bool # (>) :: CShort -> CShort -> Bool # (>=) :: CShort -> CShort -> Bool # max :: CShort -> CShort -> CShort # min :: CShort -> CShort -> CShort #
Ord CUShort
Instance details Defined in Foreign.C.Types Methods compare :: CUShort -> CUShort -> Ordering # (<) :: CUShort -> CUShort -> Bool # (<=) :: CUShort -> CUShort -> Bool # (>) :: CUShort -> CUShort -> Bool # (>=) :: CUShort -> CUShort -> Bool # max :: CUShort -> CUShort -> CUShort # min :: CUShort -> CUShort -> CUShort #
Ord CInt
Instance details Defined in Foreign.C.Types Methods compare :: CInt -> CInt -> Ordering # (<) :: CInt -> CInt -> Bool # (<=) :: CInt -> CInt -> Bool # (>) :: CInt -> CInt -> Bool # (>=) :: CInt -> CInt -> Bool # max :: CInt -> CInt -> CInt # min :: CInt -> CInt -> CInt #
Ord CUInt
Instance details Defined in Foreign.C.Types Methods compare :: CUInt -> CUInt -> Ordering # (<) :: CUInt -> CUInt -> Bool # (<=) :: CUInt -> CUInt -> Bool # (>) :: CUInt -> CUInt -> Bool # (>=) :: CUInt -> CUInt -> Bool # max :: CUInt -> CUInt -> CUInt # min :: CUInt -> CUInt -> CUInt #
Ord CLong
Instance details Defined in Foreign.C.Types Methods compare :: CLong -> CLong -> Ordering # (<) :: CLong -> CLong -> Bool # (<=) :: CLong -> CLong -> Bool # (>) :: CLong -> CLong -> Bool # (>=) :: CLong -> CLong -> Bool # max :: CLong -> CLong -> CLong # min :: CLong -> CLong -> CLong #
Ord CULong
Instance details Defined in Foreign.C.Types Methods compare :: CULong -> CULong -> Ordering # (<) :: CULong -> CULong -> Bool # (<=) :: CULong -> CULong -> Bool # (>) :: CULong -> CULong -> Bool # (>=) :: CULong -> CULong -> Bool # max :: CULong -> CULong -> CULong # min :: CULong -> CULong -> CULong #
Ord CLLong
Instance details Defined in Foreign.C.Types Methods compare :: CLLong -> CLLong -> Ordering # (<) :: CLLong -> CLLong -> Bool # (<=) :: CLLong -> CLLong -> Bool # (>) :: CLLong -> CLLong -> Bool # (>=) :: CLLong -> CLLong -> Bool # max :: CLLong -> CLLong -> CLLong # min :: CLLong -> CLLong -> CLLong #
Ord CULLong
Instance details Defined in Foreign.C.Types Methods compare :: CULLong -> CULLong -> Ordering # (<) :: CULLong -> CULLong -> Bool # (<=) :: CULLong -> CULLong -> Bool # (>) :: CULLong -> CULLong -> Bool # (>=) :: CULLong -> CULLong -> Bool # max :: CULLong -> CULLong -> CULLong # min :: CULLong -> CULLong -> CULLong #
Ord CBool
Instance details Defined in Foreign.C.Types Methods compare :: CBool -> CBool -> Ordering # (<) :: CBool -> CBool -> Bool # (<=) :: CBool -> CBool -> Bool # (>) :: CBool -> CBool -> Bool # (>=) :: CBool -> CBool -> Bool # max :: CBool -> CBool -> CBool # min :: CBool -> CBool -> CBool #
Ord CFloat
Instance details Defined in Foreign.C.Types Methods compare :: CFloat -> CFloat -> Ordering # (<) :: CFloat -> CFloat -> Bool # (<=) :: CFloat -> CFloat -> Bool # (>) :: CFloat -> CFloat -> Bool # (>=) :: CFloat -> CFloat -> Bool # max :: CFloat -> CFloat -> CFloat # min :: CFloat -> CFloat -> CFloat #
Ord CDouble
Instance details Defined in Foreign.C.Types Methods compare :: CDouble -> CDouble -> Ordering # (<) :: CDouble -> CDouble -> Bool # (<=) :: CDouble -> CDouble -> Bool # (>) :: CDouble -> CDouble -> Bool # (>=) :: CDouble -> CDouble -> Bool # max :: CDouble -> CDouble -> CDouble # min :: CDouble -> CDouble -> CDouble #
Ord CPtrdiff
Instance details Defined in Foreign.C.Types Methods compare :: CPtrdiff -> CPtrdiff -> Ordering # (<) :: CPtrdiff -> CPtrdiff -> Bool # (<=) :: CPtrdiff -> CPtrdiff -> Bool # (>) :: CPtrdiff -> CPtrdiff -> Bool # (>=) :: CPtrdiff -> CPtrdiff -> Bool # max :: CPtrdiff -> CPtrdiff -> CPtrdiff # min :: CPtrdiff -> CPtrdiff -> CPtrdiff #
Ord CSize
Instance details Defined in Foreign.C.Types Methods compare :: CSize -> CSize -> Ordering # (<) :: CSize -> CSize -> Bool # (<=) :: CSize -> CSize -> Bool # (>) :: CSize -> CSize -> Bool # (>=) :: CSize -> CSize -> Bool # max :: CSize -> CSize -> CSize # min :: CSize -> CSize -> CSize #
Ord CWchar
Instance details Defined in Foreign.C.Types Methods compare :: CWchar -> CWchar -> Ordering # (<) :: CWchar -> CWchar -> Bool # (<=) :: CWchar -> CWchar -> Bool # (>) :: CWchar -> CWchar -> Bool # (>=) :: CWchar -> CWchar -> Bool # max :: CWchar -> CWchar -> CWchar # min :: CWchar -> CWchar -> CWchar #
Ord CSigAtomic
Instance details Defined in Foreign.C.Types Methods compare :: CSigAtomic -> CSigAtomic -> Ordering # (<) :: CSigAtomic -> CSigAtomic -> Bool # (<=) :: CSigAtomic -> CSigAtomic -> Bool # (>) :: CSigAtomic -> CSigAtomic -> Bool # (>=) :: CSigAtomic -> CSigAtomic -> Bool # max :: CSigAtomic -> CSigAtomic -> CSigAtomic # min :: CSigAtomic -> CSigAtomic -> CSigAtomic #
Ord CClock
Instance details Defined in Foreign.C.Types Methods compare :: CClock -> CClock -> Ordering # (<) :: CClock -> CClock -> Bool # (<=) :: CClock -> CClock -> Bool # (>) :: CClock -> CClock -> Bool # (>=) :: CClock -> CClock -> Bool # max :: CClock -> CClock -> CClock # min :: CClock -> CClock -> CClock #
Ord CTime
Instance details Defined in Foreign.C.Types Methods compare :: CTime -> CTime -> Ordering # (<) :: CTime -> CTime -> Bool # (<=) :: CTime -> CTime -> Bool # (>) :: CTime -> CTime -> Bool # (>=) :: CTime -> CTime -> Bool # max :: CTime -> CTime -> CTime # min :: CTime -> CTime -> CTime #
Ord CUSeconds
Instance details Defined in Foreign.C.Types Methods compare :: CUSeconds -> CUSeconds -> Ordering # (<) :: CUSeconds -> CUSeconds -> Bool # (<=) :: CUSeconds -> CUSeconds -> Bool # (>) :: CUSeconds -> CUSeconds -> Bool # (>=) :: CUSeconds -> CUSeconds -> Bool # max :: CUSeconds -> CUSeconds -> CUSeconds # min :: CUSeconds -> CUSeconds -> CUSeconds #
Ord CSUSeconds
Instance details Defined in Foreign.C.Types Methods compare :: CSUSeconds -> CSUSeconds -> Ordering # (<) :: CSUSeconds -> CSUSeconds -> Bool # (<=) :: CSUSeconds -> CSUSeconds -> Bool # (>) :: CSUSeconds -> CSUSeconds -> Bool # (>=) :: CSUSeconds -> CSUSeconds -> Bool # max :: CSUSeconds -> CSUSeconds -> CSUSeconds # min :: CSUSeconds -> CSUSeconds -> CSUSeconds #
Ord CIntPtr
Instance details Defined in Foreign.C.Types Methods compare :: CIntPtr -> CIntPtr -> Ordering # (<) :: CIntPtr -> CIntPtr -> Bool # (<=) :: CIntPtr -> CIntPtr -> Bool # (>) :: CIntPtr -> CIntPtr -> Bool # (>=) :: CIntPtr -> CIntPtr -> Bool # max :: CIntPtr -> CIntPtr -> CIntPtr # min :: CIntPtr -> CIntPtr -> CIntPtr #
Ord CUIntPtr
Instance details Defined in Foreign.C.Types Methods compare :: CUIntPtr -> CUIntPtr -> Ordering # (<) :: CUIntPtr -> CUIntPtr -> Bool # (<=) :: CUIntPtr -> CUIntPtr -> Bool # (>) :: CUIntPtr -> CUIntPtr -> Bool # (>=) :: CUIntPtr -> CUIntPtr -> Bool # max :: CUIntPtr -> CUIntPtr -> CUIntPtr # min :: CUIntPtr -> CUIntPtr -> CUIntPtr #
Ord CIntMax
Instance details Defined in Foreign.C.Types Methods compare :: CIntMax -> CIntMax -> Ordering # (<) :: CIntMax -> CIntMax -> Bool # (<=) :: CIntMax -> CIntMax -> Bool # (>) :: CIntMax -> CIntMax -> Bool # (>=) :: CIntMax -> CIntMax -> Bool # max :: CIntMax -> CIntMax -> CIntMax # min :: CIntMax -> CIntMax -> CIntMax #
Ord CUIntMax
Instance details Defined in Foreign.C.Types Methods compare :: CUIntMax -> CUIntMax -> Ordering # (<) :: CUIntMax -> CUIntMax -> Bool # (<=) :: CUIntMax -> CUIntMax -> Bool # (>) :: CUIntMax -> CUIntMax -> Bool # (>=) :: CUIntMax -> CUIntMax -> Bool # max :: CUIntMax -> CUIntMax -> CUIntMax # min :: CUIntMax -> CUIntMax -> CUIntMax #
Ord ShortText
Instance details Defined in Data.Text.Short.Internal Methods compare :: ShortText -> ShortText -> Ordering # (<) :: ShortText -> ShortText -> Bool # (<=) :: ShortText -> ShortText -> Bool # (>) :: ShortText -> ShortText -> Bool # (>=) :: ShortText -> ShortText -> Bool # max :: ShortText -> ShortText -> ShortText # min :: ShortText -> ShortText -> ShortText #
Ord UTF32_Invalid
Instance details Defined in Basement.String.Encoding.UTF32 Methods compare :: UTF32_Invalid -> UTF32_Invalid -> Ordering # (<) :: UTF32_Invalid -> UTF32_Invalid -> Bool # (<=) :: UTF32_Invalid -> UTF32_Invalid -> Bool # (>) :: UTF32_Invalid -> UTF32_Invalid -> Bool # (>=) :: UTF32_Invalid -> UTF32_Invalid -> Bool # max :: UTF32_Invalid -> UTF32_Invalid -> UTF32_Invalid # min :: UTF32_Invalid -> UTF32_Invalid -> UTF32_Invalid #
Ord Encoding
Instance details Defined in Basement.String Methods compare :: Encoding -> Encoding -> Ordering # (<) :: Encoding -> Encoding -> Bool # (<=) :: Encoding -> Encoding -> Bool # (>) :: Encoding -> Encoding -> Bool # (>=) :: Encoding -> Encoding -> Bool # max :: Encoding -> Encoding -> Encoding # min :: Encoding -> Encoding -> Encoding #
Ord String
Instance details Defined in Basement.UTF8.Base Methods compare :: String -> String -> Ordering # (<) :: String -> String -> Bool # (<=) :: String -> String -> Bool # (>) :: String -> String -> Bool # (>=) :: String -> String -> Bool # max :: String -> String -> String # min :: String -> String -> String #
Ord FileSize
Instance details Defined in Basement.Types.OffsetSize Methods compare :: FileSize -> FileSize -> Ordering # (<) :: FileSize -> FileSize -> Bool # (<=) :: FileSize -> FileSize -> Bool # (>) :: FileSize -> FileSize -> Bool # (>=) :: FileSize -> FileSize -> Bool # max :: FileSize -> FileSize -> FileSize # min :: FileSize -> FileSize -> FileSize #
Ord IV
Instance details Defined in Web.ClientSession Methods compare :: IV -> IV -> Ordering # (<) :: IV -> IV -> Bool # (<=) :: IV -> IV -> Bool # (>) :: IV -> IV -> Bool # (>=) :: IV -> IV -> Bool # max :: IV -> IV -> IV # min :: IV -> IV -> IV #
Ord TimeSpec
Instance details Defined in System.Clock Methods compare :: TimeSpec -> TimeSpec -> Ordering # (<) :: TimeSpec -> TimeSpec -> Bool # (<=) :: TimeSpec -> TimeSpec -> Bool # (>) :: TimeSpec -> TimeSpec -> Bool # (>=) :: TimeSpec -> TimeSpec -> Bool # max :: TimeSpec -> TimeSpec -> TimeSpec # min :: TimeSpec -> TimeSpec -> TimeSpec #
Ord HelpFormat
Instance details Defined in System.Console.CmdArgs.Explicit.Help Methods compare :: HelpFormat -> HelpFormat -> Ordering # (<) :: HelpFormat -> HelpFormat -> Bool # (<=) :: HelpFormat -> HelpFormat -> Bool # (>) :: HelpFormat -> HelpFormat -> Bool # (>=) :: HelpFormat -> HelpFormat -> Bool # max :: HelpFormat -> HelpFormat -> HelpFormat # min :: HelpFormat -> HelpFormat -> HelpFormat #
Ord Complete
Instance details Defined in System.Console.CmdArgs.Explicit.Complete Methods compare :: Complete -> Complete -> Ordering # (<) :: Complete -> Complete -> Bool # (<=) :: Complete -> Complete -> Bool # (>) :: Complete -> Complete -> Bool # (>=) :: Complete -> Complete -> Bool # max :: Complete -> Complete -> Complete # min :: Complete -> Complete -> Complete #
Ord FlagInfo
Instance details Defined in System.Console.CmdArgs.Explicit.Type Methods compare :: FlagInfo -> FlagInfo -> Ordering # (<) :: FlagInfo -> FlagInfo -> Bool # (<=) :: FlagInfo -> FlagInfo -> Bool # (>) :: FlagInfo -> FlagInfo -> Bool # (>=) :: FlagInfo -> FlagInfo -> Bool # max :: FlagInfo -> FlagInfo -> FlagInfo # min :: FlagInfo -> FlagInfo -> FlagInfo #
Ord WindowBits
Instance details Defined in Codec.Compression.Zlib.Stream Methods compare :: WindowBits -> WindowBits -> Ordering # (<) :: WindowBits -> WindowBits -> Bool # (<=) :: WindowBits -> WindowBits -> Bool # (>) :: WindowBits -> WindowBits -> Bool # (>=) :: WindowBits -> WindowBits -> Bool # max :: WindowBits -> WindowBits -> WindowBits # min :: WindowBits -> WindowBits -> WindowBits #
Ord HostPreference
Instance details Defined in Data.Streaming.Network.Internal Methods compare :: HostPreference -> HostPreference -> Ordering # (<) :: HostPreference -> HostPreference -> Bool # (<=) :: HostPreference -> HostPreference -> Bool # (>) :: HostPreference -> HostPreference -> Bool # (>=) :: HostPreference -> HostPreference -> Bool # max :: HostPreference -> HostPreference -> HostPreference # min :: HostPreference -> HostPreference -> HostPreference #
Ord IntSet
Instance details Defined in Data.IntSet.Internal Methods compare :: IntSet -> IntSet -> Ordering # (<) :: IntSet -> IntSet -> Bool # (<=) :: IntSet -> IntSet -> Bool # (>) :: IntSet -> IntSet -> Bool # (>=) :: IntSet -> IntSet -> Bool # max :: IntSet -> IntSet -> IntSet # min :: IntSet -> IntSet -> IntSet #
Ord FileType
Instance details Defined in System.Directory.Internal.Common Methods compare :: FileType -> FileType -> Ordering # (<) :: FileType -> FileType -> Bool # (<=) :: FileType -> FileType -> Bool # (>) :: FileType -> FileType -> Bool # (>=) :: FileType -> FileType -> Bool # max :: FileType -> FileType -> FileType # min :: FileType -> FileType -> FileType #
Ord Permissions
Instance details Defined in System.Directory.Internal.Common Methods compare :: Permissions -> Permissions -> Ordering # (<) :: Permissions -> Permissions -> Bool # (<=) :: Permissions -> Permissions -> Bool # (>) :: Permissions -> Permissions -> Bool # (>=) :: Permissions -> Permissions -> Bool # max :: Permissions -> Permissions -> Permissions # min :: Permissions -> Permissions -> Permissions #
Ord XdgDirectory
Instance details Defined in System.Directory.Internal.Common Methods compare :: XdgDirectory -> XdgDirectory -> Ordering # (<) :: XdgDirectory -> XdgDirectory -> Bool # (<=) :: XdgDirectory -> XdgDirectory -> Bool # (>) :: XdgDirectory -> XdgDirectory -> Bool # (>=) :: XdgDirectory -> XdgDirectory -> Bool # max :: XdgDirectory -> XdgDirectory -> XdgDirectory # min :: XdgDirectory -> XdgDirectory -> XdgDirectory #
Ord XdgDirectoryList
Instance details Defined in System.Directory.Internal.Common Methods compare :: XdgDirectoryList -> XdgDirectoryList -> Ordering # (<) :: XdgDirectoryList -> XdgDirectoryList -> Bool # (<=) :: XdgDirectoryList -> XdgDirectoryList -> Bool # (>) :: XdgDirectoryList -> XdgDirectoryList -> Bool # (>=) :: XdgDirectoryList -> XdgDirectoryList -> Bool # max :: XdgDirectoryList -> XdgDirectoryList -> XdgDirectoryList # min :: XdgDirectoryList -> XdgDirectoryList -> XdgDirectoryList #
Ord EmailAddress
Instance details Defined in Text.Email.Parser Methods compare :: EmailAddress -> EmailAddress -> Ordering # (<) :: EmailAddress -> EmailAddress -> Bool # (<=) :: EmailAddress -> EmailAddress -> Bool # (>) :: EmailAddress -> EmailAddress -> Bool # (>=) :: EmailAddress -> EmailAddress -> Bool # max :: EmailAddress -> EmailAddress -> EmailAddress # min :: EmailAddress -> EmailAddress -> EmailAddress #
Ord SourcePos
Instance details Defined in Text.Megaparsec.Pos Methods compare :: SourcePos -> SourcePos -> Ordering # (<) :: SourcePos -> SourcePos -> Bool # (<=) :: SourcePos -> SourcePos -> Bool # (>) :: SourcePos -> SourcePos -> Bool # (>=) :: SourcePos -> SourcePos -> Bool # max :: SourcePos -> SourcePos -> SourcePos # min :: SourcePos -> SourcePos -> SourcePos #
Ord Regexp
Instance details Defined in Hledger.Utils.Regex Methods compare :: Regexp -> Regexp -> Ordering # (<) :: Regexp -> Regexp -> Bool # (<=) :: Regexp -> Regexp -> Bool # (>) :: Regexp -> Regexp -> Bool # (>=) :: Regexp -> Regexp -> Bool # max :: Regexp -> Regexp -> Regexp # min :: Regexp -> Regexp -> Regexp #
Ord MarketPrice
Instance details Defined in Hledger.Data.Types Methods compare :: MarketPrice -> MarketPrice -> Ordering # (<) :: MarketPrice -> MarketPrice -> Bool # (<=) :: MarketPrice -> MarketPrice -> Bool # (>) :: MarketPrice -> MarketPrice -> Bool # (>=) :: MarketPrice -> MarketPrice -> Bool # max :: MarketPrice -> MarketPrice -> MarketPrice # min :: MarketPrice -> MarketPrice -> MarketPrice #
Ord PriceDirective
Instance details Defined in Hledger.Data.Types Methods compare :: PriceDirective -> PriceDirective -> Ordering # (<) :: PriceDirective -> PriceDirective -> Bool # (<=) :: PriceDirective -> PriceDirective -> Bool # (>) :: PriceDirective -> PriceDirective -> Bool # (>=) :: PriceDirective -> PriceDirective -> Bool # max :: PriceDirective -> PriceDirective -> PriceDirective # min :: PriceDirective -> PriceDirective -> PriceDirective #
Ord TimeclockEntry
Instance details Defined in Hledger.Data.Types Methods compare :: TimeclockEntry -> TimeclockEntry -> Ordering # (<) :: TimeclockEntry -> TimeclockEntry -> Bool # (<=) :: TimeclockEntry -> TimeclockEntry -> Bool # (>) :: TimeclockEntry -> TimeclockEntry -> Bool # (>=) :: TimeclockEntry -> TimeclockEntry -> Bool # max :: TimeclockEntry -> TimeclockEntry -> TimeclockEntry # min :: TimeclockEntry -> TimeclockEntry -> TimeclockEntry #
Ord TimeclockCode
Instance details Defined in Hledger.Data.Types Methods compare :: TimeclockCode -> TimeclockCode -> Ordering # (<) :: TimeclockCode -> TimeclockCode -> Bool # (<=) :: TimeclockCode -> TimeclockCode -> Bool # (>) :: TimeclockCode -> TimeclockCode -> Bool # (>=) :: TimeclockCode -> TimeclockCode -> Bool # max :: TimeclockCode -> TimeclockCode -> TimeclockCode # min :: TimeclockCode -> TimeclockCode -> TimeclockCode #
Ord Status
Instance details Defined in Hledger.Data.Types Methods compare :: Status -> Status -> Ordering # (<) :: Status -> Status -> Bool # (<=) :: Status -> Status -> Bool # (>) :: Status -> Status -> Bool # (>=) :: Status -> Status -> Bool # max :: Status -> Status -> Status # min :: Status -> Status -> Status #
Ord MixedAmount
Instance details Defined in Hledger.Data.Types Methods compare :: MixedAmount -> MixedAmount -> Ordering # (<) :: MixedAmount -> MixedAmount -> Bool # (<=) :: MixedAmount -> MixedAmount -> Bool # (>) :: MixedAmount -> MixedAmount -> Bool # (>=) :: MixedAmount -> MixedAmount -> Bool # max :: MixedAmount -> MixedAmount -> MixedAmount # min :: MixedAmount -> MixedAmount -> MixedAmount #
Ord Amount
Instance details Defined in Hledger.Data.Types Methods compare :: Amount -> Amount -> Ordering # (<) :: Amount -> Amount -> Bool # (<=) :: Amount -> Amount -> Bool # (>) :: Amount -> Amount -> Bool # (>=) :: Amount -> Amount -> Bool # max :: Amount -> Amount -> Amount # min :: Amount -> Amount -> Amount #
Ord DigitGroupStyle
Instance details Defined in Hledger.Data.Types Methods compare :: DigitGroupStyle -> DigitGroupStyle -> Ordering # (<) :: DigitGroupStyle -> DigitGroupStyle -> Bool # (<=) :: DigitGroupStyle -> DigitGroupStyle -> Bool # (>) :: DigitGroupStyle -> DigitGroupStyle -> Bool # (>=) :: DigitGroupStyle -> DigitGroupStyle -> Bool # max :: DigitGroupStyle -> DigitGroupStyle -> DigitGroupStyle # min :: DigitGroupStyle -> DigitGroupStyle -> DigitGroupStyle #
Ord AmountPrecision
Instance details Defined in Hledger.Data.Types Methods compare :: AmountPrecision -> AmountPrecision -> Ordering # (<) :: AmountPrecision -> AmountPrecision -> Bool # (<=) :: AmountPrecision -> AmountPrecision -> Bool # (>) :: AmountPrecision -> AmountPrecision -> Bool # (>=) :: AmountPrecision -> AmountPrecision -> Bool # max :: AmountPrecision -> AmountPrecision -> AmountPrecision # min :: AmountPrecision -> AmountPrecision -> AmountPrecision #
Ord AmountStyle
Instance details Defined in Hledger.Data.Types Methods compare :: AmountStyle -> AmountStyle -> Ordering # (<) :: AmountStyle -> AmountStyle -> Bool # (<=) :: AmountStyle -> AmountStyle -> Bool # (>) :: AmountStyle -> AmountStyle -> Bool # (>=) :: AmountStyle -> AmountStyle -> Bool # max :: AmountStyle -> AmountStyle -> AmountStyle # min :: AmountStyle -> AmountStyle -> AmountStyle #
Ord AmountPrice
Instance details Defined in Hledger.Data.Types Methods compare :: AmountPrice -> AmountPrice -> Ordering # (<) :: AmountPrice -> AmountPrice -> Bool # (<=) :: AmountPrice -> AmountPrice -> Bool # (>) :: AmountPrice -> AmountPrice -> Bool # (>=) :: AmountPrice -> AmountPrice -> Bool # max :: AmountPrice -> AmountPrice -> AmountPrice # min :: AmountPrice -> AmountPrice -> AmountPrice #
Ord Side
Instance details Defined in Hledger.Data.Types Methods compare :: Side -> Side -> Ordering # (<) :: Side -> Side -> Bool # (<=) :: Side -> Side -> Bool # (>) :: Side -> Side -> Bool # (>=) :: Side -> Side -> Bool # max :: Side -> Side -> Side # min :: Side -> Side -> Side #
Ord AccountAlias
Instance details Defined in Hledger.Data.Types Methods compare :: AccountAlias -> AccountAlias -> Ordering # (<) :: AccountAlias -> AccountAlias -> Bool # (<=) :: AccountAlias -> AccountAlias -> Bool # (>) :: AccountAlias -> AccountAlias -> Bool # (>=) :: AccountAlias -> AccountAlias -> Bool # max :: AccountAlias -> AccountAlias -> AccountAlias # min :: AccountAlias -> AccountAlias -> AccountAlias #
Ord AccountType
Instance details Defined in Hledger.Data.Types Methods compare :: AccountType -> AccountType -> Ordering # (<) :: AccountType -> AccountType -> Bool # (<=) :: AccountType -> AccountType -> Bool # (>) :: AccountType -> AccountType -> Bool # (>=) :: AccountType -> AccountType -> Bool # max :: AccountType -> AccountType -> AccountType # min :: AccountType -> AccountType -> AccountType #
Ord Interval
Instance details Defined in Hledger.Data.Types Methods compare :: Interval -> Interval -> Ordering # (<) :: Interval -> Interval -> Bool # (<=) :: Interval -> Interval -> Bool # (>) :: Interval -> Interval -> Bool # (>=) :: Interval -> Interval -> Bool # max :: Interval -> Interval -> Interval # min :: Interval -> Interval -> Interval #
Ord Period
Instance details Defined in Hledger.Data.Types Methods compare :: Period -> Period -> Ordering # (<) :: Period -> Period -> Bool # (<=) :: Period -> Period -> Bool # (>) :: Period -> Period -> Bool # (>=) :: Period -> Period -> Bool # max :: Period -> Period -> Period # min :: Period -> Period -> Period #
Ord DateSpan
Instance details Defined in Hledger.Data.Types Methods compare :: DateSpan -> DateSpan -> Ordering # (<) :: DateSpan -> DateSpan -> Bool # (<=) :: DateSpan -> DateSpan -> Bool # (>) :: DateSpan -> DateSpan -> Bool # (>=) :: DateSpan -> DateSpan -> Bool # max :: DateSpan -> DateSpan -> DateSpan # min :: DateSpan -> DateSpan -> DateSpan #
Ord CustomErr
Instance details Defined in Text.Megaparsec.Custom Methods compare :: CustomErr -> CustomErr -> Ordering # (<) :: CustomErr -> CustomErr -> Bool # (<=) :: CustomErr -> CustomErr -> Bool # (>) :: CustomErr -> CustomErr -> Bool # (>=) :: CustomErr -> CustomErr -> Bool # max :: CustomErr -> CustomErr -> CustomErr # min :: CustomErr -> CustomErr -> CustomErr #
Ord DisplayName
Instance details Defined in Hledger.Reports.ReportTypes Methods compare :: DisplayName -> DisplayName -> Ordering # (<) :: DisplayName -> DisplayName -> Bool # (<=) :: DisplayName -> DisplayName -> Bool # (>) :: DisplayName -> DisplayName -> Bool # (>=) :: DisplayName -> DisplayName -> Bool # max :: DisplayName -> DisplayName -> DisplayName # min :: DisplayName -> DisplayName -> DisplayName #
Ord MixedAmountKey	We don't auto-derive the Ord instance because it would give an undesired ordering. We want the keys to be sorted lexicographically: (1) By the primary commodity of the amount. (2) By the commodity of the price, with no price being first. (3) By the unit price, from most negative to most positive, with total prices before unit prices. For example, we would like the ordering to give MixedAmountKeyNoPrice X < MixedAmountKeyTotalPrice X Z < MixedAmountKeyNoPrice Y
Instance details Defined in Hledger.Data.Types Methods compare :: MixedAmountKey -> MixedAmountKey -> Ordering # (<) :: MixedAmountKey -> MixedAmountKey -> Bool # (<=) :: MixedAmountKey -> MixedAmountKey -> Bool # (>) :: MixedAmountKey -> MixedAmountKey -> Bool # (>=) :: MixedAmountKey -> MixedAmountKey -> Bool # max :: MixedAmountKey -> MixedAmountKey -> MixedAmountKey # min :: MixedAmountKey -> MixedAmountKey -> MixedAmountKey #
Ord URI
Instance details Defined in Network.URI Methods compare :: URI -> URI -> Ordering # (<) :: URI -> URI -> Bool # (<=) :: URI -> URI -> Bool # (>) :: URI -> URI -> Bool # (>=) :: URI -> URI -> Bool # max :: URI -> URI -> URI # min :: URI -> URI -> URI #
Ord StatusHeaders
Instance details Defined in Network.HTTP.Client.Types Methods compare :: StatusHeaders -> StatusHeaders -> Ordering # (<) :: StatusHeaders -> StatusHeaders -> Bool # (<=) :: StatusHeaders -> StatusHeaders -> Bool # (>) :: StatusHeaders -> StatusHeaders -> Bool # (>=) :: StatusHeaders -> StatusHeaders -> Bool # max :: StatusHeaders -> StatusHeaders -> StatusHeaders # min :: StatusHeaders -> StatusHeaders -> StatusHeaders #
Ord Proxy
Instance details Defined in Network.HTTP.Client.Types Methods compare :: Proxy -> Proxy -> Ordering # (<) :: Proxy -> Proxy -> Bool # (<=) :: Proxy -> Proxy -> Bool # (>) :: Proxy -> Proxy -> Bool # (>=) :: Proxy -> Proxy -> Bool # max :: Proxy -> Proxy -> Proxy # min :: Proxy -> Proxy -> Proxy #
Ord ProxySecureMode
Instance details Defined in Network.HTTP.Client.Types Methods compare :: ProxySecureMode -> ProxySecureMode -> Ordering # (<) :: ProxySecureMode -> ProxySecureMode -> Bool # (<=) :: ProxySecureMode -> ProxySecureMode -> Bool # (>) :: ProxySecureMode -> ProxySecureMode -> Bool # (>=) :: ProxySecureMode -> ProxySecureMode -> Bool # max :: ProxySecureMode -> ProxySecureMode -> ProxySecureMode # min :: ProxySecureMode -> ProxySecureMode -> ProxySecureMode #
Ord ConnHost
Instance details Defined in Network.HTTP.Client.Types Methods compare :: ConnHost -> ConnHost -> Ordering # (<) :: ConnHost -> ConnHost -> Bool # (<=) :: ConnHost -> ConnHost -> Bool # (>) :: ConnHost -> ConnHost -> Bool # (>=) :: ConnHost -> ConnHost -> Bool # max :: ConnHost -> ConnHost -> ConnHost # min :: ConnHost -> ConnHost -> ConnHost #
Ord ConnKey
Instance details Defined in Network.HTTP.Client.Types Methods compare :: ConnKey -> ConnKey -> Ordering # (<) :: ConnKey -> ConnKey -> Bool # (<=) :: ConnKey -> ConnKey -> Bool # (>) :: ConnKey -> ConnKey -> Bool # (>=) :: ConnKey -> ConnKey -> Bool # max :: ConnKey -> ConnKey -> ConnKey # min :: ConnKey -> ConnKey -> ConnKey #
Ord StreamFileStatus
Instance details Defined in Network.HTTP.Client.Types Methods compare :: StreamFileStatus -> StreamFileStatus -> Ordering # (<) :: StreamFileStatus -> StreamFileStatus -> Bool # (<=) :: StreamFileStatus -> StreamFileStatus -> Bool # (>) :: StreamFileStatus -> StreamFileStatus -> Bool # (>=) :: StreamFileStatus -> StreamFileStatus -> Bool # max :: StreamFileStatus -> StreamFileStatus -> StreamFileStatus # min :: StreamFileStatus -> StreamFileStatus -> StreamFileStatus #
Ord HttpVersion
Instance details Defined in Network.HTTP.Types.Version Methods compare :: HttpVersion -> HttpVersion -> Ordering # (<) :: HttpVersion -> HttpVersion -> Bool # (<=) :: HttpVersion -> HttpVersion -> Bool # (>) :: HttpVersion -> HttpVersion -> Bool # (>=) :: HttpVersion -> HttpVersion -> Bool # max :: HttpVersion -> HttpVersion -> HttpVersion # min :: HttpVersion -> HttpVersion -> HttpVersion #
Ord EscapeItem
Instance details Defined in Network.HTTP.Types.URI Methods compare :: EscapeItem -> EscapeItem -> Ordering # (<) :: EscapeItem -> EscapeItem -> Bool # (<=) :: EscapeItem -> EscapeItem -> Bool # (>) :: EscapeItem -> EscapeItem -> Bool # (>=) :: EscapeItem -> EscapeItem -> Bool # max :: EscapeItem -> EscapeItem -> EscapeItem # min :: EscapeItem -> EscapeItem -> EscapeItem #
Ord Status
Instance details Defined in Network.HTTP.Types.Status Methods compare :: Status -> Status -> Ordering # (<) :: Status -> Status -> Bool # (<=) :: Status -> Status -> Bool # (>) :: Status -> Status -> Bool # (>=) :: Status -> Status -> Bool # max :: Status -> Status -> Status # min :: Status -> Status -> Status #
Ord StdMethod
Instance details Defined in Network.HTTP.Types.Method Methods compare :: StdMethod -> StdMethod -> Ordering # (<) :: StdMethod -> StdMethod -> Bool # (<=) :: StdMethod -> StdMethod -> Bool # (>) :: StdMethod -> StdMethod -> Bool # (>=) :: StdMethod -> StdMethod -> Bool # max :: StdMethod -> StdMethod -> StdMethod # min :: StdMethod -> StdMethod -> StdMethod #
Ord ByteRange
Instance details Defined in Network.HTTP.Types.Header Methods compare :: ByteRange -> ByteRange -> Ordering # (<) :: ByteRange -> ByteRange -> Bool # (<=) :: ByteRange -> ByteRange -> Bool # (>) :: ByteRange -> ByteRange -> Bool # (>=) :: ByteRange -> ByteRange -> Bool # max :: ByteRange -> ByteRange -> ByteRange # min :: ByteRange -> ByteRange -> ByteRange #
Ord BigNat
Instance details Defined in GHC.Integer.Type Methods compare :: BigNat -> BigNat -> Ordering # (<) :: BigNat -> BigNat -> Bool # (<=) :: BigNat -> BigNat -> Bool # (>) :: BigNat -> BigNat -> Bool # (>=) :: BigNat -> BigNat -> Bool # max :: BigNat -> BigNat -> BigNat # min :: BigNat -> BigNat -> BigNat #
Ord SockAddr
Instance details Defined in Network.Socket.Types Methods compare :: SockAddr -> SockAddr -> Ordering # (<) :: SockAddr -> SockAddr -> Bool # (<=) :: SockAddr -> SockAddr -> Bool # (>) :: SockAddr -> SockAddr -> Bool # (>=) :: SockAddr -> SockAddr -> Bool # max :: SockAddr -> SockAddr -> SockAddr # min :: SockAddr -> SockAddr -> SockAddr #
Ord IPRange
Instance details Defined in Data.IP.Range Methods compare :: IPRange -> IPRange -> Ordering # (<) :: IPRange -> IPRange -> Bool # (<=) :: IPRange -> IPRange -> Bool # (>) :: IPRange -> IPRange -> Bool # (>=) :: IPRange -> IPRange -> Bool # max :: IPRange -> IPRange -> IPRange # min :: IPRange -> IPRange -> IPRange #
Ord IP
Instance details Defined in Data.IP.Addr Methods compare :: IP -> IP -> Ordering # (<) :: IP -> IP -> Bool # (<=) :: IP -> IP -> Bool # (>) :: IP -> IP -> Bool # (>=) :: IP -> IP -> Bool # max :: IP -> IP -> IP # min :: IP -> IP -> IP #
Ord IPv4
Instance details Defined in Data.IP.Addr Methods compare :: IPv4 -> IPv4 -> Ordering # (<) :: IPv4 -> IPv4 -> Bool # (<=) :: IPv4 -> IPv4 -> Bool # (>) :: IPv4 -> IPv4 -> Bool # (>=) :: IPv4 -> IPv4 -> Bool # max :: IPv4 -> IPv4 -> IPv4 # min :: IPv4 -> IPv4 -> IPv4 #
Ord IPv6
Instance details Defined in Data.IP.Addr Methods compare :: IPv6 -> IPv6 -> Ordering # (<) :: IPv6 -> IPv6 -> Bool # (<=) :: IPv6 -> IPv6 -> Bool # (>) :: IPv6 -> IPv6 -> Bool # (>=) :: IPv6 -> IPv6 -> Bool # max :: IPv6 -> IPv6 -> IPv6 # min :: IPv6 -> IPv6 -> IPv6 #
Ord Style
Instance details Defined in Text.Libyaml Methods compare :: Style -> Style -> Ordering # (<) :: Style -> Style -> Bool # (<=) :: Style -> Style -> Bool # (>) :: Style -> Style -> Bool # (>=) :: Style -> Style -> Bool # max :: Style -> Style -> Style # min :: Style -> Style -> Style #
Ord SequenceStyle
Instance details Defined in Text.Libyaml Methods compare :: SequenceStyle -> SequenceStyle -> Ordering # (<) :: SequenceStyle -> SequenceStyle -> Bool # (<=) :: SequenceStyle -> SequenceStyle -> Bool # (>) :: SequenceStyle -> SequenceStyle -> Bool # (>=) :: SequenceStyle -> SequenceStyle -> Bool # max :: SequenceStyle -> SequenceStyle -> SequenceStyle # min :: SequenceStyle -> SequenceStyle -> SequenceStyle #
Ord MappingStyle
Instance details Defined in Text.Libyaml Methods compare :: MappingStyle -> MappingStyle -> Ordering # (<) :: MappingStyle -> MappingStyle -> Bool # (<=) :: MappingStyle -> MappingStyle -> Bool # (>) :: MappingStyle -> MappingStyle -> Bool # (>=) :: MappingStyle -> MappingStyle -> Bool # max :: MappingStyle -> MappingStyle -> MappingStyle # min :: MappingStyle -> MappingStyle -> MappingStyle #
Ord Pos
Instance details Defined in Text.Megaparsec.Pos Methods compare :: Pos -> Pos -> Ordering # (<) :: Pos -> Pos -> Bool # (<=) :: Pos -> Pos -> Bool # (>) :: Pos -> Pos -> Bool # (>=) :: Pos -> Pos -> Bool # max :: Pos -> Pos -> Pos # min :: Pos -> Pos -> Pos #
Ord TyVarBndr
Instance details Defined in Language.Haskell.TH.Syntax Methods compare :: TyVarBndr -> TyVarBndr -> Ordering # (<) :: TyVarBndr -> TyVarBndr -> Bool # (<=) :: TyVarBndr -> TyVarBndr -> Bool # (>) :: TyVarBndr -> TyVarBndr -> Bool # (>=) :: TyVarBndr -> TyVarBndr -> Bool # max :: TyVarBndr -> TyVarBndr -> TyVarBndr # min :: TyVarBndr -> TyVarBndr -> TyVarBndr #
Ord LogLevel
Instance details Defined in Control.Monad.Logger Methods compare :: LogLevel -> LogLevel -> Ordering # (<) :: LogLevel -> LogLevel -> Bool # (<=) :: LogLevel -> LogLevel -> Bool # (>) :: LogLevel -> LogLevel -> Bool # (>=) :: LogLevel -> LogLevel -> Bool # max :: LogLevel -> LogLevel -> LogLevel # min :: LogLevel -> LogLevel -> LogLevel #
Ord Loc
Instance details Defined in Language.Haskell.TH.Syntax Methods compare :: Loc -> Loc -> Ordering # (<) :: Loc -> Loc -> Bool # (<=) :: Loc -> Loc -> Bool # (>) :: Loc -> Loc -> Bool # (>=) :: Loc -> Loc -> Bool # max :: Loc -> Loc -> Loc # min :: Loc -> Loc -> Loc #
Ord StructLinger
Instance details Defined in Network.Socket.Options Methods compare :: StructLinger -> StructLinger -> Ordering # (<) :: StructLinger -> StructLinger -> Bool # (<=) :: StructLinger -> StructLinger -> Bool # (>) :: StructLinger -> StructLinger -> Bool # (>=) :: StructLinger -> StructLinger -> Bool # max :: StructLinger -> StructLinger -> StructLinger # min :: StructLinger -> StructLinger -> StructLinger #
Ord SocketType
Instance details Defined in Network.Socket.Types Methods compare :: SocketType -> SocketType -> Ordering # (<) :: SocketType -> SocketType -> Bool # (<=) :: SocketType -> SocketType -> Bool # (>) :: SocketType -> SocketType -> Bool # (>=) :: SocketType -> SocketType -> Bool # max :: SocketType -> SocketType -> SocketType # min :: SocketType -> SocketType -> SocketType #
Ord Family
Instance details Defined in Network.Socket.Types Methods compare :: Family -> Family -> Ordering # (<) :: Family -> Family -> Bool # (<=) :: Family -> Family -> Bool # (>) :: Family -> Family -> Bool # (>=) :: Family -> Family -> Bool # max :: Family -> Family -> Family # min :: Family -> Family -> Family #
Ord PortNumber
Instance details Defined in Network.Socket.Types Methods compare :: PortNumber -> PortNumber -> Ordering # (<) :: PortNumber -> PortNumber -> Bool # (<=) :: PortNumber -> PortNumber -> Bool # (>) :: PortNumber -> PortNumber -> Bool # (>=) :: PortNumber -> PortNumber -> Bool # max :: PortNumber -> PortNumber -> PortNumber # min :: PortNumber -> PortNumber -> PortNumber #
Ord MsgFlag
Instance details Defined in Network.Socket.Flag Methods compare :: MsgFlag -> MsgFlag -> Ordering # (<) :: MsgFlag -> MsgFlag -> Bool # (<=) :: MsgFlag -> MsgFlag -> Bool # (>) :: MsgFlag -> MsgFlag -> Bool # (>=) :: MsgFlag -> MsgFlag -> Bool # max :: MsgFlag -> MsgFlag -> MsgFlag # min :: MsgFlag -> MsgFlag -> MsgFlag #
Ord URIAuth
Instance details Defined in Network.URI Methods compare :: URIAuth -> URIAuth -> Ordering # (<) :: URIAuth -> URIAuth -> Bool # (<=) :: URIAuth -> URIAuth -> Bool # (>) :: URIAuth -> URIAuth -> Bool # (>=) :: URIAuth -> URIAuth -> Bool # max :: URIAuth -> URIAuth -> URIAuth # min :: URIAuth -> URIAuth -> URIAuth #
Ord SelfEmbed
Instance details Defined in Database.Persist.Types.Base Methods compare :: SelfEmbed -> SelfEmbed -> Ordering # (<) :: SelfEmbed -> SelfEmbed -> Bool # (<=) :: SelfEmbed -> SelfEmbed -> Bool # (>) :: SelfEmbed -> SelfEmbed -> Bool # (>=) :: SelfEmbed -> SelfEmbed -> Bool # max :: SelfEmbed -> SelfEmbed -> SelfEmbed # min :: SelfEmbed -> SelfEmbed -> SelfEmbed #
Ord UnboundEntityDef
Instance details Defined in Database.Persist.Quasi.Internal Methods compare :: UnboundEntityDef -> UnboundEntityDef -> Ordering # (<) :: UnboundEntityDef -> UnboundEntityDef -> Bool # (<=) :: UnboundEntityDef -> UnboundEntityDef -> Bool # (>) :: UnboundEntityDef -> UnboundEntityDef -> Bool # (>=) :: UnboundEntityDef -> UnboundEntityDef -> Bool # max :: UnboundEntityDef -> UnboundEntityDef -> UnboundEntityDef # min :: UnboundEntityDef -> UnboundEntityDef -> UnboundEntityDef #
Ord UnboundFieldDef
Instance details Defined in Database.Persist.Quasi.Internal Methods compare :: UnboundFieldDef -> UnboundFieldDef -> Ordering # (<) :: UnboundFieldDef -> UnboundFieldDef -> Bool # (<=) :: UnboundFieldDef -> UnboundFieldDef -> Bool # (>) :: UnboundFieldDef -> UnboundFieldDef -> Bool # (>=) :: UnboundFieldDef -> UnboundFieldDef -> Bool # max :: UnboundFieldDef -> UnboundFieldDef -> UnboundFieldDef # min :: UnboundFieldDef -> UnboundFieldDef -> UnboundFieldDef #
Ord PrimarySpec
Instance details Defined in Database.Persist.Quasi.Internal Methods compare :: PrimarySpec -> PrimarySpec -> Ordering # (<) :: PrimarySpec -> PrimarySpec -> Bool # (<=) :: PrimarySpec -> PrimarySpec -> Bool # (>) :: PrimarySpec -> PrimarySpec -> Bool # (>=) :: PrimarySpec -> PrimarySpec -> Bool # max :: PrimarySpec -> PrimarySpec -> PrimarySpec # min :: PrimarySpec -> PrimarySpec -> PrimarySpec #
Ord UnboundIdDef
Instance details Defined in Database.Persist.Quasi.Internal Methods compare :: UnboundIdDef -> UnboundIdDef -> Ordering # (<) :: UnboundIdDef -> UnboundIdDef -> Bool # (<=) :: UnboundIdDef -> UnboundIdDef -> Bool # (>) :: UnboundIdDef -> UnboundIdDef -> Bool # (>=) :: UnboundIdDef -> UnboundIdDef -> Bool # max :: UnboundIdDef -> UnboundIdDef -> UnboundIdDef # min :: UnboundIdDef -> UnboundIdDef -> UnboundIdDef #
Ord UnboundCompositeDef
Instance details Defined in Database.Persist.Quasi.Internal Methods compare :: UnboundCompositeDef -> UnboundCompositeDef -> Ordering # (<) :: UnboundCompositeDef -> UnboundCompositeDef -> Bool # (<=) :: UnboundCompositeDef -> UnboundCompositeDef -> Bool # (>) :: UnboundCompositeDef -> UnboundCompositeDef -> Bool # (>=) :: UnboundCompositeDef -> UnboundCompositeDef -> Bool # max :: UnboundCompositeDef -> UnboundCompositeDef -> UnboundCompositeDef # min :: UnboundCompositeDef -> UnboundCompositeDef -> UnboundCompositeDef #
Ord UnboundForeignDef
Instance details Defined in Database.Persist.Quasi.Internal Methods compare :: UnboundForeignDef -> UnboundForeignDef -> Ordering # (<) :: UnboundForeignDef -> UnboundForeignDef -> Bool # (<=) :: UnboundForeignDef -> UnboundForeignDef -> Bool # (>) :: UnboundForeignDef -> UnboundForeignDef -> Bool # (>=) :: UnboundForeignDef -> UnboundForeignDef -> Bool # max :: UnboundForeignDef -> UnboundForeignDef -> UnboundForeignDef # min :: UnboundForeignDef -> UnboundForeignDef -> UnboundForeignDef #
Ord UnboundForeignFieldList
Instance details Defined in Database.Persist.Quasi.Internal Methods compare :: UnboundForeignFieldList -> UnboundForeignFieldList -> Ordering # (<) :: UnboundForeignFieldList -> UnboundForeignFieldList -> Bool # (<=) :: UnboundForeignFieldList -> UnboundForeignFieldList -> Bool # (>) :: UnboundForeignFieldList -> UnboundForeignFieldList -> Bool # (>=) :: UnboundForeignFieldList -> UnboundForeignFieldList -> Bool # max :: UnboundForeignFieldList -> UnboundForeignFieldList -> UnboundForeignFieldList # min :: UnboundForeignFieldList -> UnboundForeignFieldList -> UnboundForeignFieldList #
Ord ForeignFieldReference
Instance details Defined in Database.Persist.Quasi.Internal Methods compare :: ForeignFieldReference -> ForeignFieldReference -> Ordering # (<) :: ForeignFieldReference -> ForeignFieldReference -> Bool # (<=) :: ForeignFieldReference -> ForeignFieldReference -> Bool # (>) :: ForeignFieldReference -> ForeignFieldReference -> Bool # (>=) :: ForeignFieldReference -> ForeignFieldReference -> Bool # max :: ForeignFieldReference -> ForeignFieldReference -> ForeignFieldReference # min :: ForeignFieldReference -> ForeignFieldReference -> ForeignFieldReference #
Ord OverflowNatural
Instance details Defined in Database.Persist.Class.PersistField Methods compare :: OverflowNatural -> OverflowNatural -> Ordering # (<) :: OverflowNatural -> OverflowNatural -> Bool # (<=) :: OverflowNatural -> OverflowNatural -> Bool # (>) :: OverflowNatural -> OverflowNatural -> Bool # (>=) :: OverflowNatural -> OverflowNatural -> Bool # max :: OverflowNatural -> OverflowNatural -> OverflowNatural # min :: OverflowNatural -> OverflowNatural -> OverflowNatural #
Ord Checkmark
Instance details Defined in Database.Persist.Types.Base Methods compare :: Checkmark -> Checkmark -> Ordering # (<) :: Checkmark -> Checkmark -> Bool # (<=) :: Checkmark -> Checkmark -> Bool # (>) :: Checkmark -> Checkmark -> Bool # (>=) :: Checkmark -> Checkmark -> Bool # max :: Checkmark -> Checkmark -> Checkmark # min :: Checkmark -> Checkmark -> Checkmark #
Ord EntityDef
Instance details Defined in Database.Persist.Types.Base Methods compare :: EntityDef -> EntityDef -> Ordering # (<) :: EntityDef -> EntityDef -> Bool # (<=) :: EntityDef -> EntityDef -> Bool # (>) :: EntityDef -> EntityDef -> Bool # (>=) :: EntityDef -> EntityDef -> Bool # max :: EntityDef -> EntityDef -> EntityDef # min :: EntityDef -> EntityDef -> EntityDef #
Ord EntityIdDef
Instance details Defined in Database.Persist.Types.Base Methods compare :: EntityIdDef -> EntityIdDef -> Ordering # (<) :: EntityIdDef -> EntityIdDef -> Bool # (<=) :: EntityIdDef -> EntityIdDef -> Bool # (>) :: EntityIdDef -> EntityIdDef -> Bool # (>=) :: EntityIdDef -> EntityIdDef -> Bool # max :: EntityIdDef -> EntityIdDef -> EntityIdDef # min :: EntityIdDef -> EntityIdDef -> EntityIdDef #
Ord FieldAttr
Instance details Defined in Database.Persist.Types.Base Methods compare :: FieldAttr -> FieldAttr -> Ordering # (<) :: FieldAttr -> FieldAttr -> Bool # (<=) :: FieldAttr -> FieldAttr -> Bool # (>) :: FieldAttr -> FieldAttr -> Bool # (>=) :: FieldAttr -> FieldAttr -> Bool # max :: FieldAttr -> FieldAttr -> FieldAttr # min :: FieldAttr -> FieldAttr -> FieldAttr #
Ord FieldType
Instance details Defined in Database.Persist.Types.Base Methods compare :: FieldType -> FieldType -> Ordering # (<) :: FieldType -> FieldType -> Bool # (<=) :: FieldType -> FieldType -> Bool # (>) :: FieldType -> FieldType -> Bool # (>=) :: FieldType -> FieldType -> Bool # max :: FieldType -> FieldType -> FieldType # min :: FieldType -> FieldType -> FieldType #
Ord ReferenceDef
Instance details Defined in Database.Persist.Types.Base Methods compare :: ReferenceDef -> ReferenceDef -> Ordering # (<) :: ReferenceDef -> ReferenceDef -> Bool # (<=) :: ReferenceDef -> ReferenceDef -> Bool # (>) :: ReferenceDef -> ReferenceDef -> Bool # (>=) :: ReferenceDef -> ReferenceDef -> Bool # max :: ReferenceDef -> ReferenceDef -> ReferenceDef # min :: ReferenceDef -> ReferenceDef -> ReferenceDef #
Ord EmbedEntityDef
Instance details Defined in Database.Persist.Types.Base Methods compare :: EmbedEntityDef -> EmbedEntityDef -> Ordering # (<) :: EmbedEntityDef -> EmbedEntityDef -> Bool # (<=) :: EmbedEntityDef -> EmbedEntityDef -> Bool # (>) :: EmbedEntityDef -> EmbedEntityDef -> Bool # (>=) :: EmbedEntityDef -> EmbedEntityDef -> Bool # max :: EmbedEntityDef -> EmbedEntityDef -> EmbedEntityDef # min :: EmbedEntityDef -> EmbedEntityDef -> EmbedEntityDef #
Ord EmbedFieldDef
Instance details Defined in Database.Persist.Types.Base Methods compare :: EmbedFieldDef -> EmbedFieldDef -> Ordering # (<) :: EmbedFieldDef -> EmbedFieldDef -> Bool # (<=) :: EmbedFieldDef -> EmbedFieldDef -> Bool # (>) :: EmbedFieldDef -> EmbedFieldDef -> Bool # (>=) :: EmbedFieldDef -> EmbedFieldDef -> Bool # max :: EmbedFieldDef -> EmbedFieldDef -> EmbedFieldDef # min :: EmbedFieldDef -> EmbedFieldDef -> EmbedFieldDef #
Ord UniqueDef
Instance details Defined in Database.Persist.Types.Base Methods compare :: UniqueDef -> UniqueDef -> Ordering # (<) :: UniqueDef -> UniqueDef -> Bool # (<=) :: UniqueDef -> UniqueDef -> Bool # (>) :: UniqueDef -> UniqueDef -> Bool # (>=) :: UniqueDef -> UniqueDef -> Bool # max :: UniqueDef -> UniqueDef -> UniqueDef # min :: UniqueDef -> UniqueDef -> UniqueDef #
Ord CompositeDef
Instance details Defined in Database.Persist.Types.Base Methods compare :: CompositeDef -> CompositeDef -> Ordering # (<) :: CompositeDef -> CompositeDef -> Bool # (<=) :: CompositeDef -> CompositeDef -> Bool # (>) :: CompositeDef -> CompositeDef -> Bool # (>=) :: CompositeDef -> CompositeDef -> Bool # max :: CompositeDef -> CompositeDef -> CompositeDef # min :: CompositeDef -> CompositeDef -> CompositeDef #
Ord ForeignDef
Instance details Defined in Database.Persist.Types.Base Methods compare :: ForeignDef -> ForeignDef -> Ordering # (<) :: ForeignDef -> ForeignDef -> Bool # (<=) :: ForeignDef -> ForeignDef -> Bool # (>) :: ForeignDef -> ForeignDef -> Bool # (>=) :: ForeignDef -> ForeignDef -> Bool # max :: ForeignDef -> ForeignDef -> ForeignDef # min :: ForeignDef -> ForeignDef -> ForeignDef #
Ord FieldCascade
Instance details Defined in Database.Persist.Types.Base Methods compare :: FieldCascade -> FieldCascade -> Ordering # (<) :: FieldCascade -> FieldCascade -> Bool # (<=) :: FieldCascade -> FieldCascade -> Bool # (>) :: FieldCascade -> FieldCascade -> Bool # (>=) :: FieldCascade -> FieldCascade -> Bool # max :: FieldCascade -> FieldCascade -> FieldCascade # min :: FieldCascade -> FieldCascade -> FieldCascade #
Ord CascadeAction
Instance details Defined in Database.Persist.Types.Base Methods compare :: CascadeAction -> CascadeAction -> Ordering # (<) :: CascadeAction -> CascadeAction -> Bool # (<=) :: CascadeAction -> CascadeAction -> Bool # (>) :: CascadeAction -> CascadeAction -> Bool # (>=) :: CascadeAction -> CascadeAction -> Bool # max :: CascadeAction -> CascadeAction -> CascadeAction # min :: CascadeAction -> CascadeAction -> CascadeAction #
Ord SqlType
Instance details Defined in Database.Persist.Types.Base Methods compare :: SqlType -> SqlType -> Ordering # (<) :: SqlType -> SqlType -> Bool # (<=) :: SqlType -> SqlType -> Bool # (>) :: SqlType -> SqlType -> Bool # (>=) :: SqlType -> SqlType -> Bool # max :: SqlType -> SqlType -> SqlType # min :: SqlType -> SqlType -> SqlType #
Ord FieldDef
Instance details Defined in Database.Persist.Types.Base Methods compare :: FieldDef -> FieldDef -> Ordering # (<) :: FieldDef -> FieldDef -> Bool # (<=) :: FieldDef -> FieldDef -> Bool # (>) :: FieldDef -> FieldDef -> Bool # (>=) :: FieldDef -> FieldDef -> Bool # max :: FieldDef -> FieldDef -> FieldDef # min :: FieldDef -> FieldDef -> FieldDef #
Ord PersistValue
Instance details Defined in Database.Persist.PersistValue Methods compare :: PersistValue -> PersistValue -> Ordering # (<) :: PersistValue -> PersistValue -> Bool # (<=) :: PersistValue -> PersistValue -> Bool # (>) :: PersistValue -> PersistValue -> Bool # (>=) :: PersistValue -> PersistValue -> Bool # max :: PersistValue -> PersistValue -> PersistValue # min :: PersistValue -> PersistValue -> PersistValue #
Ord LiteralType
Instance details Defined in Database.Persist.PersistValue Methods compare :: LiteralType -> LiteralType -> Ordering # (<) :: LiteralType -> LiteralType -> Bool # (<=) :: LiteralType -> LiteralType -> Bool # (>) :: LiteralType -> LiteralType -> Bool # (>=) :: LiteralType -> LiteralType -> Bool # max :: LiteralType -> LiteralType -> LiteralType # min :: LiteralType -> LiteralType -> LiteralType #
Ord FieldNameDB
Instance details Defined in Database.Persist.Names Methods compare :: FieldNameDB -> FieldNameDB -> Ordering # (<) :: FieldNameDB -> FieldNameDB -> Bool # (<=) :: FieldNameDB -> FieldNameDB -> Bool # (>) :: FieldNameDB -> FieldNameDB -> Bool # (>=) :: FieldNameDB -> FieldNameDB -> Bool # max :: FieldNameDB -> FieldNameDB -> FieldNameDB # min :: FieldNameDB -> FieldNameDB -> FieldNameDB #
Ord FieldNameHS
Instance details Defined in Database.Persist.Names Methods compare :: FieldNameHS -> FieldNameHS -> Ordering # (<) :: FieldNameHS -> FieldNameHS -> Bool # (<=) :: FieldNameHS -> FieldNameHS -> Bool # (>) :: FieldNameHS -> FieldNameHS -> Bool # (>=) :: FieldNameHS -> FieldNameHS -> Bool # max :: FieldNameHS -> FieldNameHS -> FieldNameHS # min :: FieldNameHS -> FieldNameHS -> FieldNameHS #
Ord EntityNameHS
Instance details Defined in Database.Persist.Names Methods compare :: EntityNameHS -> EntityNameHS -> Ordering # (<) :: EntityNameHS -> EntityNameHS -> Bool # (<=) :: EntityNameHS -> EntityNameHS -> Bool # (>) :: EntityNameHS -> EntityNameHS -> Bool # (>=) :: EntityNameHS -> EntityNameHS -> Bool # max :: EntityNameHS -> EntityNameHS -> EntityNameHS # min :: EntityNameHS -> EntityNameHS -> EntityNameHS #
Ord EntityNameDB
Instance details Defined in Database.Persist.Names Methods compare :: EntityNameDB -> EntityNameDB -> Ordering # (<) :: EntityNameDB -> EntityNameDB -> Bool # (<=) :: EntityNameDB -> EntityNameDB -> Bool # (>) :: EntityNameDB -> EntityNameDB -> Bool # (>=) :: EntityNameDB -> EntityNameDB -> Bool # max :: EntityNameDB -> EntityNameDB -> EntityNameDB # min :: EntityNameDB -> EntityNameDB -> EntityNameDB #
Ord ConstraintNameDB
Instance details Defined in Database.Persist.Names Methods compare :: ConstraintNameDB -> ConstraintNameDB -> Ordering # (<) :: ConstraintNameDB -> ConstraintNameDB -> Bool # (<=) :: ConstraintNameDB -> ConstraintNameDB -> Bool # (>) :: ConstraintNameDB -> ConstraintNameDB -> Bool # (>=) :: ConstraintNameDB -> ConstraintNameDB -> Bool # max :: ConstraintNameDB -> ConstraintNameDB -> ConstraintNameDB # min :: ConstraintNameDB -> ConstraintNameDB -> ConstraintNameDB #
Ord ConstraintNameHS
Instance details Defined in Database.Persist.Names Methods compare :: ConstraintNameHS -> ConstraintNameHS -> Ordering # (<) :: ConstraintNameHS -> ConstraintNameHS -> Bool # (<=) :: ConstraintNameHS -> ConstraintNameHS -> Bool # (>) :: ConstraintNameHS -> ConstraintNameHS -> Bool # (>=) :: ConstraintNameHS -> ConstraintNameHS -> Bool # max :: ConstraintNameHS -> ConstraintNameHS -> ConstraintNameHS # min :: ConstraintNameHS -> ConstraintNameHS -> ConstraintNameHS #
Ord Intensity
Instance details Defined in Prettyprinter.Render.Terminal.Internal Methods compare :: Intensity -> Intensity -> Ordering # (<) :: Intensity -> Intensity -> Bool # (<=) :: Intensity -> Intensity -> Bool # (>) :: Intensity -> Intensity -> Bool # (>=) :: Intensity -> Intensity -> Bool # max :: Intensity -> Intensity -> Intensity # min :: Intensity -> Intensity -> Intensity #
Ord Color
Instance details Defined in Prettyprinter.Render.Terminal.Internal Methods compare :: Color -> Color -> Ordering # (<) :: Color -> Color -> Bool # (<=) :: Color -> Color -> Bool # (>) :: Color -> Color -> Bool # (>=) :: Color -> Color -> Bool # max :: Color -> Color -> Color # min :: Color -> Color -> Color #
Ord FusionDepth
Instance details Defined in Prettyprinter.Internal Methods compare :: FusionDepth -> FusionDepth -> Ordering # (<) :: FusionDepth -> FusionDepth -> Bool # (<=) :: FusionDepth -> FusionDepth -> Bool # (>) :: FusionDepth -> FusionDepth -> Bool # (>=) :: FusionDepth -> FusionDepth -> Bool # max :: FusionDepth -> FusionDepth -> FusionDepth # min :: FusionDepth -> FusionDepth -> FusionDepth #
Ord PageWidth
Instance details Defined in Prettyprinter.Internal Methods compare :: PageWidth -> PageWidth -> Ordering # (<) :: PageWidth -> PageWidth -> Bool # (<=) :: PageWidth -> PageWidth -> Bool # (>) :: PageWidth -> PageWidth -> Bool # (>=) :: PageWidth -> PageWidth -> Bool # max :: PageWidth -> PageWidth -> PageWidth # min :: PageWidth -> PageWidth -> PageWidth #
Ord LayoutOptions
Instance details Defined in Prettyprinter.Internal Methods compare :: LayoutOptions -> LayoutOptions -> Ordering # (<) :: LayoutOptions -> LayoutOptions -> Bool # (<=) :: LayoutOptions -> LayoutOptions -> Bool # (>) :: LayoutOptions -> LayoutOptions -> Bool # (>=) :: LayoutOptions -> LayoutOptions -> Bool # max :: LayoutOptions -> LayoutOptions -> LayoutOptions # min :: LayoutOptions -> LayoutOptions -> LayoutOptions #
Ord Bold
Instance details Defined in Prettyprinter.Render.Terminal.Internal Methods compare :: Bold -> Bold -> Ordering # (<) :: Bold -> Bold -> Bool # (<=) :: Bold -> Bold -> Bool # (>) :: Bold -> Bold -> Bool # (>=) :: Bold -> Bold -> Bool # max :: Bold -> Bold -> Bold # min :: Bold -> Bold -> Bold #
Ord Underlined
Instance details Defined in Prettyprinter.Render.Terminal.Internal Methods compare :: Underlined -> Underlined -> Ordering # (<) :: Underlined -> Underlined -> Bool # (<=) :: Underlined -> Underlined -> Bool # (>) :: Underlined -> Underlined -> Bool # (>=) :: Underlined -> Underlined -> Bool # max :: Underlined -> Underlined -> Underlined # min :: Underlined -> Underlined -> Underlined #
Ord Italicized
Instance details Defined in Prettyprinter.Render.Terminal.Internal Methods compare :: Italicized -> Italicized -> Ordering # (<) :: Italicized -> Italicized -> Bool # (<=) :: Italicized -> Italicized -> Bool # (>) :: Italicized -> Italicized -> Bool # (>=) :: Italicized -> Italicized -> Bool # max :: Italicized -> Italicized -> Italicized # min :: Italicized -> Italicized -> Italicized #
Ord AnsiStyle
Instance details Defined in Prettyprinter.Render.Terminal.Internal Methods compare :: AnsiStyle -> AnsiStyle -> Ordering # (<) :: AnsiStyle -> AnsiStyle -> Bool # (<=) :: AnsiStyle -> AnsiStyle -> Bool # (>) :: AnsiStyle -> AnsiStyle -> Bool # (>=) :: AnsiStyle -> AnsiStyle -> Bool # max :: AnsiStyle -> AnsiStyle -> AnsiStyle # min :: AnsiStyle -> AnsiStyle -> AnsiStyle #
Ord ByteArray	Non-lexicographic ordering. This compares the lengths of the byte arrays first and uses a lexicographic ordering if the lengths are equal. Subject to change between major versions. Since: primitive-0.6.3.0
Instance details Defined in Data.Primitive.ByteArray Methods compare :: ByteArray -> ByteArray -> Ordering # (<) :: ByteArray -> ByteArray -> Bool # (<=) :: ByteArray -> ByteArray -> Bool # (>) :: ByteArray -> ByteArray -> Bool # (>=) :: ByteArray -> ByteArray -> Bool # max :: ByteArray -> ByteArray -> ByteArray # min :: ByteArray -> ByteArray -> ByteArray #
Ord PixelSize
Instance details Defined in Text.Internal.CssCommon Methods compare :: PixelSize -> PixelSize -> Ordering # (<) :: PixelSize -> PixelSize -> Bool # (<=) :: PixelSize -> PixelSize -> Bool # (>) :: PixelSize -> PixelSize -> Bool # (>=) :: PixelSize -> PixelSize -> Bool # max :: PixelSize -> PixelSize -> PixelSize # min :: PixelSize -> PixelSize -> PixelSize #
Ord ExSize
Instance details Defined in Text.Internal.CssCommon Methods compare :: ExSize -> ExSize -> Ordering # (<) :: ExSize -> ExSize -> Bool # (<=) :: ExSize -> ExSize -> Bool # (>) :: ExSize -> ExSize -> Bool # (>=) :: ExSize -> ExSize -> Bool # max :: ExSize -> ExSize -> ExSize # min :: ExSize -> ExSize -> ExSize #
Ord EmSize
Instance details Defined in Text.Internal.CssCommon Methods compare :: EmSize -> EmSize -> Ordering # (<) :: EmSize -> EmSize -> Bool # (<=) :: EmSize -> EmSize -> Bool # (>) :: EmSize -> EmSize -> Bool # (>=) :: EmSize -> EmSize -> Bool # max :: EmSize -> EmSize -> EmSize # min :: EmSize -> EmSize -> EmSize #
Ord AbsoluteSize
Instance details Defined in Text.Internal.CssCommon Methods compare :: AbsoluteSize -> AbsoluteSize -> Ordering # (<) :: AbsoluteSize -> AbsoluteSize -> Bool # (<=) :: AbsoluteSize -> AbsoluteSize -> Bool # (>) :: AbsoluteSize -> AbsoluteSize -> Bool # (>=) :: AbsoluteSize -> AbsoluteSize -> Bool # max :: AbsoluteSize -> AbsoluteSize -> AbsoluteSize # min :: AbsoluteSize -> AbsoluteSize -> AbsoluteSize #
Ord PercentageSize
Instance details Defined in Text.Internal.CssCommon Methods compare :: PercentageSize -> PercentageSize -> Ordering # (<) :: PercentageSize -> PercentageSize -> Bool # (<=) :: PercentageSize -> PercentageSize -> Bool # (>) :: PercentageSize -> PercentageSize -> Bool # (>=) :: PercentageSize -> PercentageSize -> Bool # max :: PercentageSize -> PercentageSize -> PercentageSize # min :: PercentageSize -> PercentageSize -> PercentageSize #
Ord VarType
Instance details Defined in Text.Shakespeare Methods compare :: VarType -> VarType -> Ordering # (<) :: VarType -> VarType -> Bool # (<=) :: VarType -> VarType -> Bool # (>) :: VarType -> VarType -> Bool # (>=) :: VarType -> VarType -> Bool # max :: VarType -> VarType -> VarType # min :: VarType -> VarType -> VarType #
Ord NumThreads
Instance details Defined in Test.Tasty.Options.Core Methods compare :: NumThreads -> NumThreads -> Ordering # (<) :: NumThreads -> NumThreads -> Bool # (<=) :: NumThreads -> NumThreads -> Bool # (>) :: NumThreads -> NumThreads -> Bool # (>=) :: NumThreads -> NumThreads -> Bool # max :: NumThreads -> NumThreads -> NumThreads # min :: NumThreads -> NumThreads -> NumThreads #
Ord ModName
Instance details Defined in Language.Haskell.TH.Syntax Methods compare :: ModName -> ModName -> Ordering # (<) :: ModName -> ModName -> Bool # (<=) :: ModName -> ModName -> Bool # (>) :: ModName -> ModName -> Bool # (>=) :: ModName -> ModName -> Bool # max :: ModName -> ModName -> ModName # min :: ModName -> ModName -> ModName #
Ord PkgName
Instance details Defined in Language.Haskell.TH.Syntax Methods compare :: PkgName -> PkgName -> Ordering # (<) :: PkgName -> PkgName -> Bool # (<=) :: PkgName -> PkgName -> Bool # (>) :: PkgName -> PkgName -> Bool # (>=) :: PkgName -> PkgName -> Bool # max :: PkgName -> PkgName -> PkgName # min :: PkgName -> PkgName -> PkgName #
Ord Module
Instance details Defined in Language.Haskell.TH.Syntax Methods compare :: Module -> Module -> Ordering # (<) :: Module -> Module -> Bool # (<=) :: Module -> Module -> Bool # (>) :: Module -> Module -> Bool # (>=) :: Module -> Module -> Bool # max :: Module -> Module -> Module # min :: Module -> Module -> Module #
Ord OccName
Instance details Defined in Language.Haskell.TH.Syntax Methods compare :: OccName -> OccName -> Ordering # (<) :: OccName -> OccName -> Bool # (<=) :: OccName -> OccName -> Bool # (>) :: OccName -> OccName -> Bool # (>=) :: OccName -> OccName -> Bool # max :: OccName -> OccName -> OccName # min :: OccName -> OccName -> OccName #
Ord NameFlavour
Instance details Defined in Language.Haskell.TH.Syntax Methods compare :: NameFlavour -> NameFlavour -> Ordering # (<) :: NameFlavour -> NameFlavour -> Bool # (<=) :: NameFlavour -> NameFlavour -> Bool # (>) :: NameFlavour -> NameFlavour -> Bool # (>=) :: NameFlavour -> NameFlavour -> Bool # max :: NameFlavour -> NameFlavour -> NameFlavour # min :: NameFlavour -> NameFlavour -> NameFlavour #
Ord NameSpace
Instance details Defined in Language.Haskell.TH.Syntax Methods compare :: NameSpace -> NameSpace -> Ordering # (<) :: NameSpace -> NameSpace -> Bool # (<=) :: NameSpace -> NameSpace -> Bool # (>) :: NameSpace -> NameSpace -> Bool # (>=) :: NameSpace -> NameSpace -> Bool # max :: NameSpace -> NameSpace -> NameSpace # min :: NameSpace -> NameSpace -> NameSpace #
Ord Info
Instance details Defined in Language.Haskell.TH.Syntax Methods compare :: Info -> Info -> Ordering # (<) :: Info -> Info -> Bool # (<=) :: Info -> Info -> Bool # (>) :: Info -> Info -> Bool # (>=) :: Info -> Info -> Bool # max :: Info -> Info -> Info # min :: Info -> Info -> Info #
Ord ModuleInfo
Instance details Defined in Language.Haskell.TH.Syntax Methods compare :: ModuleInfo -> ModuleInfo -> Ordering # (<) :: ModuleInfo -> ModuleInfo -> Bool # (<=) :: ModuleInfo -> ModuleInfo -> Bool # (>) :: ModuleInfo -> ModuleInfo -> Bool # (>=) :: ModuleInfo -> ModuleInfo -> Bool # max :: ModuleInfo -> ModuleInfo -> ModuleInfo # min :: ModuleInfo -> ModuleInfo -> ModuleInfo #
Ord Fixity
Instance details Defined in Language.Haskell.TH.Syntax Methods compare :: Fixity -> Fixity -> Ordering # (<) :: Fixity -> Fixity -> Bool # (<=) :: Fixity -> Fixity -> Bool # (>) :: Fixity -> Fixity -> Bool # (>=) :: Fixity -> Fixity -> Bool # max :: Fixity -> Fixity -> Fixity # min :: Fixity -> Fixity -> Fixity #
Ord FixityDirection
Instance details Defined in Language.Haskell.TH.Syntax Methods compare :: FixityDirection -> FixityDirection -> Ordering # (<) :: FixityDirection -> FixityDirection -> Bool # (<=) :: FixityDirection -> FixityDirection -> Bool # (>) :: FixityDirection -> FixityDirection -> Bool # (>=) :: FixityDirection -> FixityDirection -> Bool # max :: FixityDirection -> FixityDirection -> FixityDirection # min :: FixityDirection -> FixityDirection -> FixityDirection #
Ord Lit
Instance details Defined in Language.Haskell.TH.Syntax Methods compare :: Lit -> Lit -> Ordering # (<) :: Lit -> Lit -> Bool # (<=) :: Lit -> Lit -> Bool # (>) :: Lit -> Lit -> Bool # (>=) :: Lit -> Lit -> Bool # max :: Lit -> Lit -> Lit # min :: Lit -> Lit -> Lit #
Ord Bytes
Instance details Defined in Language.Haskell.TH.Syntax Methods compare :: Bytes -> Bytes -> Ordering # (<) :: Bytes -> Bytes -> Bool # (<=) :: Bytes -> Bytes -> Bool # (>) :: Bytes -> Bytes -> Bool # (>=) :: Bytes -> Bytes -> Bool # max :: Bytes -> Bytes -> Bytes # min :: Bytes -> Bytes -> Bytes #
Ord Body
Instance details Defined in Language.Haskell.TH.Syntax Methods compare :: Body -> Body -> Ordering # (<) :: Body -> Body -> Bool # (<=) :: Body -> Body -> Bool # (>) :: Body -> Body -> Bool # (>=) :: Body -> Body -> Bool # max :: Body -> Body -> Body # min :: Body -> Body -> Body #
Ord Guard
Instance details Defined in Language.Haskell.TH.Syntax Methods compare :: Guard -> Guard -> Ordering # (<) :: Guard -> Guard -> Bool # (<=) :: Guard -> Guard -> Bool # (>) :: Guard -> Guard -> Bool # (>=) :: Guard -> Guard -> Bool # max :: Guard -> Guard -> Guard # min :: Guard -> Guard -> Guard #
Ord Stmt
Instance details Defined in Language.Haskell.TH.Syntax Methods compare :: Stmt -> Stmt -> Ordering # (<) :: Stmt -> Stmt -> Bool # (<=) :: Stmt -> Stmt -> Bool # (>) :: Stmt -> Stmt -> Bool # (>=) :: Stmt -> Stmt -> Bool # max :: Stmt -> Stmt -> Stmt # min :: Stmt -> Stmt -> Stmt #
Ord Range
Instance details Defined in Language.Haskell.TH.Syntax Methods compare :: Range -> Range -> Ordering # (<) :: Range -> Range -> Bool # (<=) :: Range -> Range -> Bool # (>) :: Range -> Range -> Bool # (>=) :: Range -> Range -> Bool # max :: Range -> Range -> Range # min :: Range -> Range -> Range #
Ord DerivClause
Instance details Defined in Language.Haskell.TH.Syntax Methods compare :: DerivClause -> DerivClause -> Ordering # (<) :: DerivClause -> DerivClause -> Bool # (<=) :: DerivClause -> DerivClause -> Bool # (>) :: DerivClause -> DerivClause -> Bool # (>=) :: DerivClause -> DerivClause -> Bool # max :: DerivClause -> DerivClause -> DerivClause # min :: DerivClause -> DerivClause -> DerivClause #
Ord DerivStrategy
Instance details Defined in Language.Haskell.TH.Syntax Methods compare :: DerivStrategy -> DerivStrategy -> Ordering # (<) :: DerivStrategy -> DerivStrategy -> Bool # (<=) :: DerivStrategy -> DerivStrategy -> Bool # (>) :: DerivStrategy -> DerivStrategy -> Bool # (>=) :: DerivStrategy -> DerivStrategy -> Bool # max :: DerivStrategy -> DerivStrategy -> DerivStrategy # min :: DerivStrategy -> DerivStrategy -> DerivStrategy #
Ord TypeFamilyHead
Instance details Defined in Language.Haskell.TH.Syntax Methods compare :: TypeFamilyHead -> TypeFamilyHead -> Ordering # (<) :: TypeFamilyHead -> TypeFamilyHead -> Bool # (<=) :: TypeFamilyHead -> TypeFamilyHead -> Bool # (>) :: TypeFamilyHead -> TypeFamilyHead -> Bool # (>=) :: TypeFamilyHead -> TypeFamilyHead -> Bool # max :: TypeFamilyHead -> TypeFamilyHead -> TypeFamilyHead # min :: TypeFamilyHead -> TypeFamilyHead -> TypeFamilyHead #
Ord TySynEqn
Instance details Defined in Language.Haskell.TH.Syntax Methods compare :: TySynEqn -> TySynEqn -> Ordering # (<) :: TySynEqn -> TySynEqn -> Bool # (<=) :: TySynEqn -> TySynEqn -> Bool # (>) :: TySynEqn -> TySynEqn -> Bool # (>=) :: TySynEqn -> TySynEqn -> Bool # max :: TySynEqn -> TySynEqn -> TySynEqn # min :: TySynEqn -> TySynEqn -> TySynEqn #
Ord Foreign
Instance details Defined in Language.Haskell.TH.Syntax Methods compare :: Foreign -> Foreign -> Ordering # (<) :: Foreign -> Foreign -> Bool # (<=) :: Foreign -> Foreign -> Bool # (>) :: Foreign -> Foreign -> Bool # (>=) :: Foreign -> Foreign -> Bool # max :: Foreign -> Foreign -> Foreign # min :: Foreign -> Foreign -> Foreign #
Ord Callconv
Instance details Defined in Language.Haskell.TH.Syntax Methods compare :: Callconv -> Callconv -> Ordering # (<) :: Callconv -> Callconv -> Bool # (<=) :: Callconv -> Callconv -> Bool # (>) :: Callconv -> Callconv -> Bool # (>=) :: Callconv -> Callconv -> Bool # max :: Callconv -> Callconv -> Callconv # min :: Callconv -> Callconv -> Callconv #
Ord Safety
Instance details Defined in Language.Haskell.TH.Syntax Methods compare :: Safety -> Safety -> Ordering # (<) :: Safety -> Safety -> Bool # (<=) :: Safety -> Safety -> Bool # (>) :: Safety -> Safety -> Bool # (>=) :: Safety -> Safety -> Bool # max :: Safety -> Safety -> Safety # min :: Safety -> Safety -> Safety #
Ord Pragma
Instance details Defined in Language.Haskell.TH.Syntax Methods compare :: Pragma -> Pragma -> Ordering # (<) :: Pragma -> Pragma -> Bool # (<=) :: Pragma -> Pragma -> Bool # (>) :: Pragma -> Pragma -> Bool # (>=) :: Pragma -> Pragma -> Bool # max :: Pragma -> Pragma -> Pragma # min :: Pragma -> Pragma -> Pragma #
Ord Inline
Instance details Defined in Language.Haskell.TH.Syntax Methods compare :: Inline -> Inline -> Ordering # (<) :: Inline -> Inline -> Bool # (<=) :: Inline -> Inline -> Bool # (>) :: Inline -> Inline -> Bool # (>=) :: Inline -> Inline -> Bool # max :: Inline -> Inline -> Inline # min :: Inline -> Inline -> Inline #
Ord RuleMatch
Instance details Defined in Language.Haskell.TH.Syntax Methods compare :: RuleMatch -> RuleMatch -> Ordering # (<) :: RuleMatch -> RuleMatch -> Bool # (<=) :: RuleMatch -> RuleMatch -> Bool # (>) :: RuleMatch -> RuleMatch -> Bool # (>=) :: RuleMatch -> RuleMatch -> Bool # max :: RuleMatch -> RuleMatch -> RuleMatch # min :: RuleMatch -> RuleMatch -> RuleMatch #
Ord Phases
Instance details Defined in Language.Haskell.TH.Syntax Methods compare :: Phases -> Phases -> Ordering # (<) :: Phases -> Phases -> Bool # (<=) :: Phases -> Phases -> Bool # (>) :: Phases -> Phases -> Bool # (>=) :: Phases -> Phases -> Bool # max :: Phases -> Phases -> Phases # min :: Phases -> Phases -> Phases #
Ord RuleBndr
Instance details Defined in Language.Haskell.TH.Syntax Methods compare :: RuleBndr -> RuleBndr -> Ordering # (<) :: RuleBndr -> RuleBndr -> Bool # (<=) :: RuleBndr -> RuleBndr -> Bool # (>) :: RuleBndr -> RuleBndr -> Bool # (>=) :: RuleBndr -> RuleBndr -> Bool # max :: RuleBndr -> RuleBndr -> RuleBndr # min :: RuleBndr -> RuleBndr -> RuleBndr #
Ord AnnTarget
Instance details Defined in Language.Haskell.TH.Syntax Methods compare :: AnnTarget -> AnnTarget -> Ordering # (<) :: AnnTarget -> AnnTarget -> Bool # (<=) :: AnnTarget -> AnnTarget -> Bool # (>) :: AnnTarget -> AnnTarget -> Bool # (>=) :: AnnTarget -> AnnTarget -> Bool # max :: AnnTarget -> AnnTarget -> AnnTarget # min :: AnnTarget -> AnnTarget -> AnnTarget #
Ord SourceUnpackedness
Instance details Defined in Language.Haskell.TH.Syntax Methods compare :: SourceUnpackedness -> SourceUnpackedness -> Ordering # (<) :: SourceUnpackedness -> SourceUnpackedness -> Bool # (<=) :: SourceUnpackedness -> SourceUnpackedness -> Bool # (>) :: SourceUnpackedness -> SourceUnpackedness -> Bool # (>=) :: SourceUnpackedness -> SourceUnpackedness -> Bool # max :: SourceUnpackedness -> SourceUnpackedness -> SourceUnpackedness # min :: SourceUnpackedness -> SourceUnpackedness -> SourceUnpackedness #
Ord SourceStrictness
Instance details Defined in Language.Haskell.TH.Syntax Methods compare :: SourceStrictness -> SourceStrictness -> Ordering # (<) :: SourceStrictness -> SourceStrictness -> Bool # (<=) :: SourceStrictness -> SourceStrictness -> Bool # (>) :: SourceStrictness -> SourceStrictness -> Bool # (>=) :: SourceStrictness -> SourceStrictness -> Bool # max :: SourceStrictness -> SourceStrictness -> SourceStrictness # min :: SourceStrictness -> SourceStrictness -> SourceStrictness #
Ord DecidedStrictness
Instance details Defined in Language.Haskell.TH.Syntax Methods compare :: DecidedStrictness -> DecidedStrictness -> Ordering # (<) :: DecidedStrictness -> DecidedStrictness -> Bool # (<=) :: DecidedStrictness -> DecidedStrictness -> Bool # (>) :: DecidedStrictness -> DecidedStrictness -> Bool # (>=) :: DecidedStrictness -> DecidedStrictness -> Bool # max :: DecidedStrictness -> DecidedStrictness -> DecidedStrictness # min :: DecidedStrictness -> DecidedStrictness -> DecidedStrictness #
Ord Con
Instance details Defined in Language.Haskell.TH.Syntax Methods compare :: Con -> Con -> Ordering # (<) :: Con -> Con -> Bool # (<=) :: Con -> Con -> Bool # (>) :: Con -> Con -> Bool # (>=) :: Con -> Con -> Bool # max :: Con -> Con -> Con # min :: Con -> Con -> Con #
Ord Bang
Instance details Defined in Language.Haskell.TH.Syntax Methods compare :: Bang -> Bang -> Ordering # (<) :: Bang -> Bang -> Bool # (<=) :: Bang -> Bang -> Bool # (>) :: Bang -> Bang -> Bool # (>=) :: Bang -> Bang -> Bool # max :: Bang -> Bang -> Bang # min :: Bang -> Bang -> Bang #
Ord PatSynDir
Instance details Defined in Language.Haskell.TH.Syntax Methods compare :: PatSynDir -> PatSynDir -> Ordering # (<) :: PatSynDir -> PatSynDir -> Bool # (<=) :: PatSynDir -> PatSynDir -> Bool # (>) :: PatSynDir -> PatSynDir -> Bool # (>=) :: PatSynDir -> PatSynDir -> Bool # max :: PatSynDir -> PatSynDir -> PatSynDir # min :: PatSynDir -> PatSynDir -> PatSynDir #
Ord PatSynArgs
Instance details Defined in Language.Haskell.TH.Syntax Methods compare :: PatSynArgs -> PatSynArgs -> Ordering # (<) :: PatSynArgs -> PatSynArgs -> Bool # (<=) :: PatSynArgs -> PatSynArgs -> Bool # (>) :: PatSynArgs -> PatSynArgs -> Bool # (>=) :: PatSynArgs -> PatSynArgs -> Bool # max :: PatSynArgs -> PatSynArgs -> PatSynArgs # min :: PatSynArgs -> PatSynArgs -> PatSynArgs #
Ord FamilyResultSig
Instance details Defined in Language.Haskell.TH.Syntax Methods compare :: FamilyResultSig -> FamilyResultSig -> Ordering # (<) :: FamilyResultSig -> FamilyResultSig -> Bool # (<=) :: FamilyResultSig -> FamilyResultSig -> Bool # (>) :: FamilyResultSig -> FamilyResultSig -> Bool # (>=) :: FamilyResultSig -> FamilyResultSig -> Bool # max :: FamilyResultSig -> FamilyResultSig -> FamilyResultSig # min :: FamilyResultSig -> FamilyResultSig -> FamilyResultSig #
Ord TyLit
Instance details Defined in Language.Haskell.TH.Syntax Methods compare :: TyLit -> TyLit -> Ordering # (<) :: TyLit -> TyLit -> Bool # (<=) :: TyLit -> TyLit -> Bool # (>) :: TyLit -> TyLit -> Bool # (>=) :: TyLit -> TyLit -> Bool # max :: TyLit -> TyLit -> TyLit # min :: TyLit -> TyLit -> TyLit #
Ord Role
Instance details Defined in Language.Haskell.TH.Syntax Methods compare :: Role -> Role -> Ordering # (<) :: Role -> Role -> Bool # (<=) :: Role -> Role -> Bool # (>) :: Role -> Role -> Bool # (>=) :: Role -> Role -> Bool # max :: Role -> Role -> Role # min :: Role -> Role -> Role #
Ord AnnLookup
Instance details Defined in Language.Haskell.TH.Syntax Methods compare :: AnnLookup -> AnnLookup -> Ordering # (<) :: AnnLookup -> AnnLookup -> Bool # (<=) :: AnnLookup -> AnnLookup -> Bool # (>) :: AnnLookup -> AnnLookup -> Bool # (>=) :: AnnLookup -> AnnLookup -> Bool # max :: AnnLookup -> AnnLookup -> AnnLookup # min :: AnnLookup -> AnnLookup -> AnnLookup #
Ord DatatypeVariant
Instance details Defined in Language.Haskell.TH.Datatype Methods compare :: DatatypeVariant -> DatatypeVariant -> Ordering # (<) :: DatatypeVariant -> DatatypeVariant -> Bool # (<=) :: DatatypeVariant -> DatatypeVariant -> Bool # (>) :: DatatypeVariant -> DatatypeVariant -> Bool # (>=) :: DatatypeVariant -> DatatypeVariant -> Bool # max :: DatatypeVariant -> DatatypeVariant -> DatatypeVariant # min :: DatatypeVariant -> DatatypeVariant -> DatatypeVariant #
Ord ConstructorVariant
Instance details Defined in Language.Haskell.TH.Datatype Methods compare :: ConstructorVariant -> ConstructorVariant -> Ordering # (<) :: ConstructorVariant -> ConstructorVariant -> Bool # (<=) :: ConstructorVariant -> ConstructorVariant -> Bool # (>) :: ConstructorVariant -> ConstructorVariant -> Bool # (>=) :: ConstructorVariant -> ConstructorVariant -> Bool # max :: ConstructorVariant -> ConstructorVariant -> ConstructorVariant # min :: ConstructorVariant -> ConstructorVariant -> ConstructorVariant #
Ord FieldStrictness
Instance details Defined in Language.Haskell.TH.Datatype Methods compare :: FieldStrictness -> FieldStrictness -> Ordering # (<) :: FieldStrictness -> FieldStrictness -> Bool # (<=) :: FieldStrictness -> FieldStrictness -> Bool # (>) :: FieldStrictness -> FieldStrictness -> Bool # (>=) :: FieldStrictness -> FieldStrictness -> Bool # max :: FieldStrictness -> FieldStrictness -> FieldStrictness # min :: FieldStrictness -> FieldStrictness -> FieldStrictness #
Ord Unpackedness
Instance details Defined in Language.Haskell.TH.Datatype Methods compare :: Unpackedness -> Unpackedness -> Ordering # (<) :: Unpackedness -> Unpackedness -> Bool # (<=) :: Unpackedness -> Unpackedness -> Bool # (>) :: Unpackedness -> Unpackedness -> Bool # (>=) :: Unpackedness -> Unpackedness -> Bool # max :: Unpackedness -> Unpackedness -> Unpackedness # min :: Unpackedness -> Unpackedness -> Unpackedness #
Ord Strictness
Instance details Defined in Language.Haskell.TH.Datatype Methods compare :: Strictness -> Strictness -> Ordering # (<) :: Strictness -> Strictness -> Bool # (<=) :: Strictness -> Strictness -> Bool # (>) :: Strictness -> Strictness -> Bool # (>=) :: Strictness -> Strictness -> Bool # max :: Strictness -> Strictness -> Strictness # min :: Strictness -> Strictness -> Strictness #
Ord Specificity
Instance details Defined in Language.Haskell.TH.Datatype.TyVarBndr Methods compare :: Specificity -> Specificity -> Ordering # (<) :: Specificity -> Specificity -> Bool # (<=) :: Specificity -> Specificity -> Bool # (>) :: Specificity -> Specificity -> Bool # (>=) :: Specificity -> Specificity -> Bool # max :: Specificity -> Specificity -> Specificity # min :: Specificity -> Specificity -> Specificity #
Ord TimeLocale
Instance details Defined in Data.Time.Format.Locale Methods compare :: TimeLocale -> TimeLocale -> Ordering # (<) :: TimeLocale -> TimeLocale -> Bool # (<=) :: TimeLocale -> TimeLocale -> Bool # (>) :: TimeLocale -> TimeLocale -> Bool # (>=) :: TimeLocale -> TimeLocale -> Bool # max :: TimeLocale -> TimeLocale -> TimeLocale # min :: TimeLocale -> TimeLocale -> TimeLocale #
Ord LocalTime
Instance details Defined in Data.Time.LocalTime.Internal.LocalTime Methods compare :: LocalTime -> LocalTime -> Ordering # (<) :: LocalTime -> LocalTime -> Bool # (<=) :: LocalTime -> LocalTime -> Bool # (>) :: LocalTime -> LocalTime -> Bool # (>=) :: LocalTime -> LocalTime -> Bool # max :: LocalTime -> LocalTime -> LocalTime # min :: LocalTime -> LocalTime -> LocalTime #
Ord TimeOfDay
Instance details Defined in Data.Time.LocalTime.Internal.TimeOfDay Methods compare :: TimeOfDay -> TimeOfDay -> Ordering # (<) :: TimeOfDay -> TimeOfDay -> Bool # (<=) :: TimeOfDay -> TimeOfDay -> Bool # (>) :: TimeOfDay -> TimeOfDay -> Bool # (>=) :: TimeOfDay -> TimeOfDay -> Bool # max :: TimeOfDay -> TimeOfDay -> TimeOfDay # min :: TimeOfDay -> TimeOfDay -> TimeOfDay #
Ord TimeZone
Instance details Defined in Data.Time.LocalTime.Internal.TimeZone Methods compare :: TimeZone -> TimeZone -> Ordering # (<) :: TimeZone -> TimeZone -> Bool # (<=) :: TimeZone -> TimeZone -> Bool # (>) :: TimeZone -> TimeZone -> Bool # (>=) :: TimeZone -> TimeZone -> Bool # max :: TimeZone -> TimeZone -> TimeZone # min :: TimeZone -> TimeZone -> TimeZone #
Ord UniversalTime
Instance details Defined in Data.Time.Clock.Internal.UniversalTime Methods compare :: UniversalTime -> UniversalTime -> Ordering # (<) :: UniversalTime -> UniversalTime -> Bool # (<=) :: UniversalTime -> UniversalTime -> Bool # (>) :: UniversalTime -> UniversalTime -> Bool # (>=) :: UniversalTime -> UniversalTime -> Bool # max :: UniversalTime -> UniversalTime -> UniversalTime # min :: UniversalTime -> UniversalTime -> UniversalTime #
Ord SystemTime
Instance details Defined in Data.Time.Clock.Internal.SystemTime Methods compare :: SystemTime -> SystemTime -> Ordering # (<) :: SystemTime -> SystemTime -> Bool # (<=) :: SystemTime -> SystemTime -> Bool # (>) :: SystemTime -> SystemTime -> Bool # (>=) :: SystemTime -> SystemTime -> Bool # max :: SystemTime -> SystemTime -> SystemTime # min :: SystemTime -> SystemTime -> SystemTime #
Ord NominalDiffTime
Instance details Defined in Data.Time.Clock.Internal.NominalDiffTime Methods compare :: NominalDiffTime -> NominalDiffTime -> Ordering # (<) :: NominalDiffTime -> NominalDiffTime -> Bool # (<=) :: NominalDiffTime -> NominalDiffTime -> Bool # (>) :: NominalDiffTime -> NominalDiffTime -> Bool # (>=) :: NominalDiffTime -> NominalDiffTime -> Bool # max :: NominalDiffTime -> NominalDiffTime -> NominalDiffTime # min :: NominalDiffTime -> NominalDiffTime -> NominalDiffTime #
Ord DiffTime
Instance details Defined in Data.Time.Clock.Internal.DiffTime Methods compare :: DiffTime -> DiffTime -> Ordering # (<) :: DiffTime -> DiffTime -> Bool # (<=) :: DiffTime -> DiffTime -> Bool # (>) :: DiffTime -> DiffTime -> Bool # (>=) :: DiffTime -> DiffTime -> Bool # max :: DiffTime -> DiffTime -> DiffTime # min :: DiffTime -> DiffTime -> DiffTime #
Ord Day
Instance details Defined in Data.Time.Calendar.Days Methods compare :: Day -> Day -> Ordering # (<) :: Day -> Day -> Bool # (<=) :: Day -> Day -> Bool # (>) :: Day -> Day -> Bool # (>=) :: Day -> Day -> Bool # max :: Day -> Day -> Day # min :: Day -> Day -> Day #
Ord UnixTime
Instance details Defined in Data.UnixTime.Types Methods compare :: UnixTime -> UnixTime -> Ordering # (<) :: UnixTime -> UnixTime -> Bool # (<=) :: UnixTime -> UnixTime -> Bool # (>) :: UnixTime -> UnixTime -> Bool # (>=) :: UnixTime -> UnixTime -> Bool # max :: UnixTime -> UnixTime -> UnixTime # min :: UnixTime -> UnixTime -> UnixTime #
Ord UnixDiffTime
Instance details Defined in Data.UnixTime.Types Methods compare :: UnixDiffTime -> UnixDiffTime -> Ordering # (<) :: UnixDiffTime -> UnixDiffTime -> Bool # (<=) :: UnixDiffTime -> UnixDiffTime -> Bool # (>) :: UnixDiffTime -> UnixDiffTime -> Bool # (>=) :: UnixDiffTime -> UnixDiffTime -> Bool # max :: UnixDiffTime -> UnixDiffTime -> UnixDiffTime # min :: UnixDiffTime -> UnixDiffTime -> UnixDiffTime #
Ord ConcException
Instance details Defined in UnliftIO.Internals.Async Methods compare :: ConcException -> ConcException -> Ordering # (<) :: ConcException -> ConcException -> Bool # (<=) :: ConcException -> ConcException -> Bool # (>) :: ConcException -> ConcException -> Bool # (>=) :: ConcException -> ConcException -> Bool # max :: ConcException -> ConcException -> ConcException # min :: ConcException -> ConcException -> ConcException #
Ord UnpackedUUID
Instance details Defined in Data.UUID.Types.Internal Methods compare :: UnpackedUUID -> UnpackedUUID -> Ordering # (<) :: UnpackedUUID -> UnpackedUUID -> Bool # (<=) :: UnpackedUUID -> UnpackedUUID -> Bool # (>) :: UnpackedUUID -> UnpackedUUID -> Bool # (>=) :: UnpackedUUID -> UnpackedUUID -> Bool # max :: UnpackedUUID -> UnpackedUUID -> UnpackedUUID # min :: UnpackedUUID -> UnpackedUUID -> UnpackedUUID #
Ord UUID
Instance details Defined in Data.UUID.Types.Internal Methods compare :: UUID -> UUID -> Ordering # (<) :: UUID -> UUID -> Bool # (<=) :: UUID -> UUID -> Bool # (>) :: UUID -> UUID -> Bool # (>=) :: UUID -> UUID -> Bool # max :: UUID -> UUID -> UUID # min :: UUID -> UUID -> UUID #
Ord Piece
Instance details Defined in WaiAppStatic.Types Methods compare :: Piece -> Piece -> Ordering # (<) :: Piece -> Piece -> Bool # (<=) :: Piece -> Piece -> Bool # (>) :: Piece -> Piece -> Bool # (>=) :: Piece -> Piece -> Bool # max :: Piece -> Piece -> Piece # min :: Piece -> Piece -> Piece #
Ord CorsResourcePolicy
Instance details Defined in Network.Wai.Middleware.Cors Methods compare :: CorsResourcePolicy -> CorsResourcePolicy -> Ordering # (<) :: CorsResourcePolicy -> CorsResourcePolicy -> Bool # (<=) :: CorsResourcePolicy -> CorsResourcePolicy -> Bool # (>) :: CorsResourcePolicy -> CorsResourcePolicy -> Bool # (>=) :: CorsResourcePolicy -> CorsResourcePolicy -> Bool # max :: CorsResourcePolicy -> CorsResourcePolicy -> CorsResourcePolicy # min :: CorsResourcePolicy -> CorsResourcePolicy -> CorsResourcePolicy #
Ord Event
Instance details Defined in Data.XML.Types Methods compare :: Event -> Event -> Ordering # (<) :: Event -> Event -> Bool # (<=) :: Event -> Event -> Bool # (>) :: Event -> Event -> Bool # (>=) :: Event -> Event -> Bool # max :: Event -> Event -> Event # min :: Event -> Event -> Event #
Ord ExternalID
Instance details Defined in Data.XML.Types Methods compare :: ExternalID -> ExternalID -> Ordering # (<) :: ExternalID -> ExternalID -> Bool # (<=) :: ExternalID -> ExternalID -> Bool # (>) :: ExternalID -> ExternalID -> Bool # (>=) :: ExternalID -> ExternalID -> Bool # max :: ExternalID -> ExternalID -> ExternalID # min :: ExternalID -> ExternalID -> ExternalID #
Ord Doctype
Instance details Defined in Data.XML.Types Methods compare :: Doctype -> Doctype -> Ordering # (<) :: Doctype -> Doctype -> Bool # (<=) :: Doctype -> Doctype -> Bool # (>) :: Doctype -> Doctype -> Bool # (>=) :: Doctype -> Doctype -> Bool # max :: Doctype -> Doctype -> Doctype # min :: Doctype -> Doctype -> Doctype #
Ord Name
Instance details Defined in Data.XML.Types Methods compare :: Name -> Name -> Ordering # (<) :: Name -> Name -> Bool # (<=) :: Name -> Name -> Bool # (>) :: Name -> Name -> Bool # (>=) :: Name -> Name -> Bool # max :: Name -> Name -> Name # min :: Name -> Name -> Name #
Ord Miscellaneous
Instance details Defined in Data.XML.Types Methods compare :: Miscellaneous -> Miscellaneous -> Ordering # (<) :: Miscellaneous -> Miscellaneous -> Bool # (<=) :: Miscellaneous -> Miscellaneous -> Bool # (>) :: Miscellaneous -> Miscellaneous -> Bool # (>=) :: Miscellaneous -> Miscellaneous -> Bool # max :: Miscellaneous -> Miscellaneous -> Miscellaneous # min :: Miscellaneous -> Miscellaneous -> Miscellaneous #
Ord Instruction
Instance details Defined in Data.XML.Types Methods compare :: Instruction -> Instruction -> Ordering # (<) :: Instruction -> Instruction -> Bool # (<=) :: Instruction -> Instruction -> Bool # (>) :: Instruction -> Instruction -> Bool # (>=) :: Instruction -> Instruction -> Bool # max :: Instruction -> Instruction -> Instruction # min :: Instruction -> Instruction -> Instruction #
Ord Prologue
Instance details Defined in Data.XML.Types Methods compare :: Prologue -> Prologue -> Ordering # (<) :: Prologue -> Prologue -> Bool # (<=) :: Prologue -> Prologue -> Bool # (>) :: Prologue -> Prologue -> Bool # (>=) :: Prologue -> Prologue -> Bool # max :: Prologue -> Prologue -> Prologue # min :: Prologue -> Prologue -> Prologue #
Ord Document
Instance details Defined in Data.XML.Types Methods compare :: Document -> Document -> Ordering # (<) :: Document -> Document -> Bool # (<=) :: Document -> Document -> Bool # (>) :: Document -> Document -> Bool # (>=) :: Document -> Document -> Bool # max :: Document -> Document -> Document # min :: Document -> Document -> Document #
Ord Node
Instance details Defined in Data.XML.Types Methods compare :: Node -> Node -> Ordering # (<) :: Node -> Node -> Bool # (<=) :: Node -> Node -> Bool # (>) :: Node -> Node -> Bool # (>=) :: Node -> Node -> Bool # max :: Node -> Node -> Node # min :: Node -> Node -> Node #
Ord Element
Instance details Defined in Data.XML.Types Methods compare :: Element -> Element -> Ordering # (<) :: Element -> Element -> Bool # (<=) :: Element -> Element -> Bool # (>) :: Element -> Element -> Bool # (>=) :: Element -> Element -> Bool # max :: Element -> Element -> Element # min :: Element -> Element -> Element #
Ord Content
Instance details Defined in Data.XML.Types Methods compare :: Content -> Content -> Ordering # (<) :: Content -> Content -> Bool # (<=) :: Content -> Content -> Bool # (>) :: Content -> Content -> Bool # (>=) :: Content -> Content -> Bool # max :: Content -> Content -> Content # min :: Content -> Content -> Content #
Ord Textarea
Instance details Defined in Yesod.Form.Fields Methods compare :: Textarea -> Textarea -> Ordering # (<) :: Textarea -> Textarea -> Bool # (<=) :: Textarea -> Textarea -> Bool # (>) :: Textarea -> Textarea -> Bool # (>=) :: Textarea -> Textarea -> Bool # max :: Textarea -> Textarea -> Textarea # min :: Textarea -> Textarea -> Textarea #
Ord DictionaryHash
Instance details Defined in Codec.Compression.Zlib.Stream Methods compare :: DictionaryHash -> DictionaryHash -> Ordering # (<) :: DictionaryHash -> DictionaryHash -> Bool # (<=) :: DictionaryHash -> DictionaryHash -> Bool # (>) :: DictionaryHash -> DictionaryHash -> Bool # (>=) :: DictionaryHash -> DictionaryHash -> Bool # max :: DictionaryHash -> DictionaryHash -> DictionaryHash # min :: DictionaryHash -> DictionaryHash -> DictionaryHash #
Ord Format
Instance details Defined in Codec.Compression.Zlib.Stream Methods compare :: Format -> Format -> Ordering # (<) :: Format -> Format -> Bool # (<=) :: Format -> Format -> Bool # (>) :: Format -> Format -> Bool # (>=) :: Format -> Format -> Bool # max :: Format -> Format -> Format # min :: Format -> Format -> Format #
Ord Method
Instance details Defined in Codec.Compression.Zlib.Stream Methods compare :: Method -> Method -> Ordering # (<) :: Method -> Method -> Bool # (<=) :: Method -> Method -> Bool # (>) :: Method -> Method -> Bool # (>=) :: Method -> Method -> Bool # max :: Method -> Method -> Method # min :: Method -> Method -> Method #
Ord CompressionStrategy
Instance details Defined in Codec.Compression.Zlib.Stream Methods compare :: CompressionStrategy -> CompressionStrategy -> Ordering # (<) :: CompressionStrategy -> CompressionStrategy -> Bool # (<=) :: CompressionStrategy -> CompressionStrategy -> Bool # (>) :: CompressionStrategy -> CompressionStrategy -> Bool # (>=) :: CompressionStrategy -> CompressionStrategy -> Bool # max :: CompressionStrategy -> CompressionStrategy -> CompressionStrategy # min :: CompressionStrategy -> CompressionStrategy -> CompressionStrategy #
Ord B
Instance details Defined in Data.Text.Short.Internal Methods compare :: B -> B -> Ordering # (<) :: B -> B -> Bool # (<=) :: B -> B -> Bool # (>) :: B -> B -> Bool # (>=) :: B -> B -> Bool # max :: B -> B -> B # min :: B -> B -> B #
Ord Layer
Instance details Defined in Prettyprinter.Render.Terminal.Internal Methods compare :: Layer -> Layer -> Ordering # (<) :: Layer -> Layer -> Bool # (<=) :: Layer -> Layer -> Bool # (>) :: Layer -> Layer -> Bool # (>=) :: Layer -> Layer -> Bool # max :: Layer -> Layer -> Layer # min :: Layer -> Layer -> Layer #
Ord Capability Source #
Instance details Defined in Hledger.Web.WebOptions Methods compare :: Capability -> Capability -> Ordering # (<) :: Capability -> Capability -> Bool # (<=) :: Capability -> Capability -> Bool # (>) :: Capability -> Capability -> Bool # (>=) :: Capability -> Capability -> Bool # max :: Capability -> Capability -> Capability # min :: Capability -> Capability -> Capability #
Ord a => Ord [a]
Instance details Defined in GHC.Classes Methods compare :: [a] -> [a] -> Ordering # (<) :: [a] -> [a] -> Bool # (<=) :: [a] -> [a] -> Bool # (>) :: [a] -> [a] -> Bool # (>=) :: [a] -> [a] -> Bool # max :: [a] -> [a] -> [a] # min :: [a] -> [a] -> [a] #
Ord a => Ord (Maybe a)	Since: base-2.1
Instance details Defined in GHC.Maybe Methods compare :: Maybe a -> Maybe a -> Ordering # (<) :: Maybe a -> Maybe a -> Bool # (<=) :: Maybe a -> Maybe a -> Bool # (>) :: Maybe a -> Maybe a -> Bool # (>=) :: Maybe a -> Maybe a -> Bool # max :: Maybe a -> Maybe a -> Maybe a # min :: Maybe a -> Maybe a -> Maybe a #
Integral a => Ord (Ratio a)	Since: base-2.0.1
Instance details Defined in GHC.Real Methods compare :: Ratio a -> Ratio a -> Ordering # (<) :: Ratio a -> Ratio a -> Bool # (<=) :: Ratio a -> Ratio a -> Bool # (>) :: Ratio a -> Ratio a -> Bool # (>=) :: Ratio a -> Ratio a -> Bool # max :: Ratio a -> Ratio a -> Ratio a # min :: Ratio a -> Ratio a -> Ratio a #
Ord (Ptr a)	Since: base-2.1
Instance details Defined in GHC.Ptr Methods compare :: Ptr a -> Ptr a -> Ordering # (<) :: Ptr a -> Ptr a -> Bool # (<=) :: Ptr a -> Ptr a -> Bool # (>) :: Ptr a -> Ptr a -> Bool # (>=) :: Ptr a -> Ptr a -> Bool # max :: Ptr a -> Ptr a -> Ptr a # min :: Ptr a -> Ptr a -> Ptr a #
Ord (FunPtr a)
Instance details Defined in GHC.Ptr Methods compare :: FunPtr a -> FunPtr a -> Ordering # (<) :: FunPtr a -> FunPtr a -> Bool # (<=) :: FunPtr a -> FunPtr a -> Bool # (>) :: FunPtr a -> FunPtr a -> Bool # (>=) :: FunPtr a -> FunPtr a -> Bool # max :: FunPtr a -> FunPtr a -> FunPtr a # min :: FunPtr a -> FunPtr a -> FunPtr a #
Ord p => Ord (Par1 p)	Since: base-4.7.0.0
Instance details Defined in GHC.Generics Methods compare :: Par1 p -> Par1 p -> Ordering # (<) :: Par1 p -> Par1 p -> Bool # (<=) :: Par1 p -> Par1 p -> Bool # (>) :: Par1 p -> Par1 p -> Bool # (>=) :: Par1 p -> Par1 p -> Bool # max :: Par1 p -> Par1 p -> Par1 p # min :: Par1 p -> Par1 p -> Par1 p #
Integral i => Ord (DecimalRaw i)
Instance details Defined in Data.Decimal Methods compare :: DecimalRaw i -> DecimalRaw i -> Ordering # (<) :: DecimalRaw i -> DecimalRaw i -> Bool # (<=) :: DecimalRaw i -> DecimalRaw i -> Bool # (>) :: DecimalRaw i -> DecimalRaw i -> Bool # (>=) :: DecimalRaw i -> DecimalRaw i -> Bool # max :: DecimalRaw i -> DecimalRaw i -> DecimalRaw i # min :: DecimalRaw i -> DecimalRaw i -> DecimalRaw i #
Ord a => Ord (Only a)
Instance details Defined in Data.Tuple.Only Methods compare :: Only a -> Only a -> Ordering # (<) :: Only a -> Only a -> Bool # (<=) :: Only a -> Only a -> Bool # (>) :: Only a -> Only a -> Bool # (>=) :: Only a -> Only a -> Bool # max :: Only a -> Only a -> Only a # min :: Only a -> Only a -> Only a #
Ord (Encoding' a)
Instance details Defined in Data.Aeson.Encoding.Internal Methods compare :: Encoding' a -> Encoding' a -> Ordering # (<) :: Encoding' a -> Encoding' a -> Bool # (<=) :: Encoding' a -> Encoding' a -> Bool # (>) :: Encoding' a -> Encoding' a -> Bool # (>=) :: Encoding' a -> Encoding' a -> Bool # max :: Encoding' a -> Encoding' a -> Encoding' a # min :: Encoding' a -> Encoding' a -> Encoding' a #
Ord a => Ord (Min a)	Since: base-4.9.0.0
Instance details Defined in Data.Semigroup Methods compare :: Min a -> Min a -> Ordering # (<) :: Min a -> Min a -> Bool # (<=) :: Min a -> Min a -> Bool # (>) :: Min a -> Min a -> Bool # (>=) :: Min a -> Min a -> Bool # max :: Min a -> Min a -> Min a # min :: Min a -> Min a -> Min a #
Ord a => Ord (Max a)	Since: base-4.9.0.0
Instance details Defined in Data.Semigroup Methods compare :: Max a -> Max a -> Ordering # (<) :: Max a -> Max a -> Bool # (<=) :: Max a -> Max a -> Bool # (>) :: Max a -> Max a -> Bool # (>=) :: Max a -> Max a -> Bool # max :: Max a -> Max a -> Max a # min :: Max a -> Max a -> Max a #
Ord a => Ord (First a)	Since: base-4.9.0.0
Instance details Defined in Data.Semigroup Methods compare :: First a -> First a -> Ordering # (<) :: First a -> First a -> Bool # (<=) :: First a -> First a -> Bool # (>) :: First a -> First a -> Bool # (>=) :: First a -> First a -> Bool # max :: First a -> First a -> First a # min :: First a -> First a -> First a #
Ord a => Ord (Last a)	Since: base-4.9.0.0
Instance details Defined in Data.Semigroup Methods compare :: Last a -> Last a -> Ordering # (<) :: Last a -> Last a -> Bool # (<=) :: Last a -> Last a -> Bool # (>) :: Last a -> Last a -> Bool # (>=) :: Last a -> Last a -> Bool # max :: Last a -> Last a -> Last a # min :: Last a -> Last a -> Last a #
Ord m => Ord (WrappedMonoid m)	Since: base-4.9.0.0
Instance details Defined in Data.Semigroup Methods compare :: WrappedMonoid m -> WrappedMonoid m -> Ordering # (<) :: WrappedMonoid m -> WrappedMonoid m -> Bool # (<=) :: WrappedMonoid m -> WrappedMonoid m -> Bool # (>) :: WrappedMonoid m -> WrappedMonoid m -> Bool # (>=) :: WrappedMonoid m -> WrappedMonoid m -> Bool # max :: WrappedMonoid m -> WrappedMonoid m -> WrappedMonoid m # min :: WrappedMonoid m -> WrappedMonoid m -> WrappedMonoid m #
Ord a => Ord (Option a)	Since: base-4.9.0.0
Instance details Defined in Data.Semigroup Methods compare :: Option a -> Option a -> Ordering # (<) :: Option a -> Option a -> Bool # (<=) :: Option a -> Option a -> Bool # (>) :: Option a -> Option a -> Bool # (>=) :: Option a -> Option a -> Bool # max :: Option a -> Option a -> Option a # min :: Option a -> Option a -> Option a #
Ord a => Ord (ZipList a)	Since: base-4.7.0.0
Instance details Defined in Control.Applicative Methods compare :: ZipList a -> ZipList a -> Ordering # (<) :: ZipList a -> ZipList a -> Bool # (<=) :: ZipList a -> ZipList a -> Bool # (>) :: ZipList a -> ZipList a -> Bool # (>=) :: ZipList a -> ZipList a -> Bool # max :: ZipList a -> ZipList a -> ZipList a # min :: ZipList a -> ZipList a -> ZipList a #
Ord a => Ord (Identity a)	Since: base-4.8.0.0
Instance details Defined in Data.Functor.Identity Methods compare :: Identity a -> Identity a -> Ordering # (<) :: Identity a -> Identity a -> Bool # (<=) :: Identity a -> Identity a -> Bool # (>) :: Identity a -> Identity a -> Bool # (>=) :: Identity a -> Identity a -> Bool # max :: Identity a -> Identity a -> Identity a # min :: Identity a -> Identity a -> Identity a #
Ord a => Ord (First a)	Since: base-2.1
Instance details Defined in Data.Monoid Methods compare :: First a -> First a -> Ordering # (<) :: First a -> First a -> Bool # (<=) :: First a -> First a -> Bool # (>) :: First a -> First a -> Bool # (>=) :: First a -> First a -> Bool # max :: First a -> First a -> First a # min :: First a -> First a -> First a #
Ord a => Ord (Last a)	Since: base-2.1
Instance details Defined in Data.Monoid Methods compare :: Last a -> Last a -> Ordering # (<) :: Last a -> Last a -> Bool # (<=) :: Last a -> Last a -> Bool # (>) :: Last a -> Last a -> Bool # (>=) :: Last a -> Last a -> Bool # max :: Last a -> Last a -> Last a # min :: Last a -> Last a -> Last a #
Ord a => Ord (Dual a)	Since: base-2.1
Instance details Defined in Data.Semigroup.Internal Methods compare :: Dual a -> Dual a -> Ordering # (<) :: Dual a -> Dual a -> Bool # (<=) :: Dual a -> Dual a -> Bool # (>) :: Dual a -> Dual a -> Bool # (>=) :: Dual a -> Dual a -> Bool # max :: Dual a -> Dual a -> Dual a # min :: Dual a -> Dual a -> Dual a #
Ord a => Ord (Sum a)	Since: base-2.1
Instance details Defined in Data.Semigroup.Internal Methods compare :: Sum a -> Sum a -> Ordering # (<) :: Sum a -> Sum a -> Bool # (<=) :: Sum a -> Sum a -> Bool # (>) :: Sum a -> Sum a -> Bool # (>=) :: Sum a -> Sum a -> Bool # max :: Sum a -> Sum a -> Sum a # min :: Sum a -> Sum a -> Sum a #
Ord a => Ord (Product a)	Since: base-2.1
Instance details Defined in Data.Semigroup.Internal Methods compare :: Product a -> Product a -> Ordering # (<) :: Product a -> Product a -> Bool # (<=) :: Product a -> Product a -> Bool # (>) :: Product a -> Product a -> Bool # (>=) :: Product a -> Product a -> Bool # max :: Product a -> Product a -> Product a # min :: Product a -> Product a -> Product a #
Ord a => Ord (Down a)	Since: base-4.6.0.0
Instance details Defined in Data.Ord Methods compare :: Down a -> Down a -> Ordering # (<) :: Down a -> Down a -> Bool # (<=) :: Down a -> Down a -> Bool # (>) :: Down a -> Down a -> Bool # (>=) :: Down a -> Down a -> Bool # max :: Down a -> Down a -> Down a # min :: Down a -> Down a -> Down a #
Ord a => Ord (NonEmpty a)	Since: base-4.9.0.0
Instance details Defined in GHC.Base Methods compare :: NonEmpty a -> NonEmpty a -> Ordering # (<) :: NonEmpty a -> NonEmpty a -> Bool # (<=) :: NonEmpty a -> NonEmpty a -> Bool # (>) :: NonEmpty a -> NonEmpty a -> Bool # (>=) :: NonEmpty a -> NonEmpty a -> Bool # max :: NonEmpty a -> NonEmpty a -> NonEmpty a # min :: NonEmpty a -> NonEmpty a -> NonEmpty a #
(PrimType ty, Ord ty) => Ord (UArray ty)
Instance details Defined in Basement.UArray.Base Methods compare :: UArray ty -> UArray ty -> Ordering # (<) :: UArray ty -> UArray ty -> Bool # (<=) :: UArray ty -> UArray ty -> Bool # (>) :: UArray ty -> UArray ty -> Bool # (>=) :: UArray ty -> UArray ty -> Bool # max :: UArray ty -> UArray ty -> UArray ty # min :: UArray ty -> UArray ty -> UArray ty #
(PrimType ty, Ord ty) => Ord (Block ty)
Instance details Defined in Basement.Block.Base Methods compare :: Block ty -> Block ty -> Ordering # (<) :: Block ty -> Block ty -> Bool # (<=) :: Block ty -> Block ty -> Bool # (>) :: Block ty -> Block ty -> Bool # (>=) :: Block ty -> Block ty -> Bool # max :: Block ty -> Block ty -> Block ty # min :: Block ty -> Block ty -> Block ty #
Ord (Offset ty)
Instance details Defined in Basement.Types.OffsetSize Methods compare :: Offset ty -> Offset ty -> Ordering # (<) :: Offset ty -> Offset ty -> Bool # (<=) :: Offset ty -> Offset ty -> Bool # (>) :: Offset ty -> Offset ty -> Bool # (>=) :: Offset ty -> Offset ty -> Bool # max :: Offset ty -> Offset ty -> Offset ty # min :: Offset ty -> Offset ty -> Offset ty #
Ord (CountOf ty)
Instance details Defined in Basement.Types.OffsetSize Methods compare :: CountOf ty -> CountOf ty -> Ordering # (<) :: CountOf ty -> CountOf ty -> Bool # (<=) :: CountOf ty -> CountOf ty -> Bool # (>) :: CountOf ty -> CountOf ty -> Bool # (>=) :: CountOf ty -> CountOf ty -> Bool # max :: CountOf ty -> CountOf ty -> CountOf ty # min :: CountOf ty -> CountOf ty -> CountOf ty #
Ord (Zn64 n)
Instance details Defined in Basement.Bounded Methods compare :: Zn64 n -> Zn64 n -> Ordering # (<) :: Zn64 n -> Zn64 n -> Bool # (<=) :: Zn64 n -> Zn64 n -> Bool # (>) :: Zn64 n -> Zn64 n -> Bool # (>=) :: Zn64 n -> Zn64 n -> Bool # max :: Zn64 n -> Zn64 n -> Zn64 n # min :: Zn64 n -> Zn64 n -> Zn64 n #
Ord (Zn n)
Instance details Defined in Basement.Bounded Methods compare :: Zn n -> Zn n -> Ordering # (<) :: Zn n -> Zn n -> Bool # (<=) :: Zn n -> Zn n -> Bool # (>) :: Zn n -> Zn n -> Bool # (>=) :: Zn n -> Zn n -> Bool # max :: Zn n -> Zn n -> Zn n # min :: Zn n -> Zn n -> Zn n #
Ord s => Ord (CI s)
Instance details Defined in Data.CaseInsensitive.Internal Methods compare :: CI s -> CI s -> Ordering # (<) :: CI s -> CI s -> Bool # (<=) :: CI s -> CI s -> Bool # (>) :: CI s -> CI s -> Bool # (>=) :: CI s -> CI s -> Bool # max :: CI s -> CI s -> CI s # min :: CI s -> CI s -> CI s #
Ord a => Ord (Flush a)
Instance details Defined in Data.Conduit.Internal.Conduit Methods compare :: Flush a -> Flush a -> Ordering # (<) :: Flush a -> Flush a -> Bool # (<=) :: Flush a -> Flush a -> Bool # (>) :: Flush a -> Flush a -> Bool # (>=) :: Flush a -> Flush a -> Bool # max :: Flush a -> Flush a -> Flush a # min :: Flush a -> Flush a -> Flush a #
Ord a => Ord (IntMap a)
Instance details Defined in Data.IntMap.Internal Methods compare :: IntMap a -> IntMap a -> Ordering # (<) :: IntMap a -> IntMap a -> Bool # (<=) :: IntMap a -> IntMap a -> Bool # (>) :: IntMap a -> IntMap a -> Bool # (>=) :: IntMap a -> IntMap a -> Bool # max :: IntMap a -> IntMap a -> IntMap a # min :: IntMap a -> IntMap a -> IntMap a #
Ord a => Ord (Seq a)
Instance details Defined in Data.Sequence.Internal Methods compare :: Seq a -> Seq a -> Ordering # (<) :: Seq a -> Seq a -> Bool # (<=) :: Seq a -> Seq a -> Bool # (>) :: Seq a -> Seq a -> Bool # (>=) :: Seq a -> Seq a -> Bool # max :: Seq a -> Seq a -> Seq a # min :: Seq a -> Seq a -> Seq a #
Ord a => Ord (ViewL a)
Instance details Defined in Data.Sequence.Internal Methods compare :: ViewL a -> ViewL a -> Ordering # (<) :: ViewL a -> ViewL a -> Bool # (<=) :: ViewL a -> ViewL a -> Bool # (>) :: ViewL a -> ViewL a -> Bool # (>=) :: ViewL a -> ViewL a -> Bool # max :: ViewL a -> ViewL a -> ViewL a # min :: ViewL a -> ViewL a -> ViewL a #
Ord a => Ord (ViewR a)
Instance details Defined in Data.Sequence.Internal Methods compare :: ViewR a -> ViewR a -> Ordering # (<) :: ViewR a -> ViewR a -> Bool # (<=) :: ViewR a -> ViewR a -> Bool # (>) :: ViewR a -> ViewR a -> Bool # (>=) :: ViewR a -> ViewR a -> Bool # max :: ViewR a -> ViewR a -> ViewR a # min :: ViewR a -> ViewR a -> ViewR a #
Ord a => Ord (Set a)
Instance details Defined in Data.Set.Internal Methods compare :: Set a -> Set a -> Ordering # (<) :: Set a -> Set a -> Bool # (<=) :: Set a -> Set a -> Bool # (>) :: Set a -> Set a -> Bool # (>=) :: Set a -> Set a -> Bool # max :: Set a -> Set a -> Set a # min :: Set a -> Set a -> Set a #
Ord (Digest a)
Instance details Defined in Crypto.Hash.Types Methods compare :: Digest a -> Digest a -> Ordering # (<) :: Digest a -> Digest a -> Bool # (<=) :: Digest a -> Digest a -> Bool # (>) :: Digest a -> Digest a -> Bool # (>=) :: Digest a -> Digest a -> Bool # max :: Digest a -> Digest a -> Digest a # min :: Digest a -> Digest a -> Digest a #
Ord1 f => Ord (Fix f)
Instance details Defined in Data.Fix Methods compare :: Fix f -> Fix f -> Ordering # (<) :: Fix f -> Fix f -> Bool # (<=) :: Fix f -> Fix f -> Bool # (>) :: Fix f -> Fix f -> Bool # (>=) :: Fix f -> Fix f -> Bool # max :: Fix f -> Fix f -> Fix f # min :: Fix f -> Fix f -> Fix f #
(Functor f, Ord1 f) => Ord (Mu f)
Instance details Defined in Data.Fix Methods compare :: Mu f -> Mu f -> Ordering # (<) :: Mu f -> Mu f -> Bool # (<=) :: Mu f -> Mu f -> Bool # (>) :: Mu f -> Mu f -> Bool # (>=) :: Mu f -> Mu f -> Bool # max :: Mu f -> Mu f -> Mu f # min :: Mu f -> Mu f -> Mu f #
(Functor f, Ord1 f) => Ord (Nu f)
Instance details Defined in Data.Fix Methods compare :: Nu f -> Nu f -> Ordering # (<) :: Nu f -> Nu f -> Bool # (<=) :: Nu f -> Nu f -> Bool # (>) :: Nu f -> Nu f -> Bool # (>=) :: Nu f -> Nu f -> Bool # max :: Nu f -> Nu f -> Nu f # min :: Nu f -> Nu f -> Nu f #
Ord a => Ord (DNonEmpty a)
Instance details Defined in Data.DList.DNonEmpty.Internal Methods compare :: DNonEmpty a -> DNonEmpty a -> Ordering # (<) :: DNonEmpty a -> DNonEmpty a -> Bool # (<=) :: DNonEmpty a -> DNonEmpty a -> Bool # (>) :: DNonEmpty a -> DNonEmpty a -> Bool # (>=) :: DNonEmpty a -> DNonEmpty a -> Bool # max :: DNonEmpty a -> DNonEmpty a -> DNonEmpty a # min :: DNonEmpty a -> DNonEmpty a -> DNonEmpty a #
Ord a => Ord (DList a)
Instance details Defined in Data.DList.Internal Methods compare :: DList a -> DList a -> Ordering # (<) :: DList a -> DList a -> Bool # (<=) :: DList a -> DList a -> Bool # (>) :: DList a -> DList a -> Bool # (>=) :: DList a -> DList a -> Bool # max :: DList a -> DList a -> DList a # min :: DList a -> DList a -> DList a #
Ord a => Ord (Doc a)
Instance details Defined in Text.DocLayout Methods compare :: Doc a -> Doc a -> Ordering # (<) :: Doc a -> Doc a -> Bool # (<=) :: Doc a -> Doc a -> Bool # (>) :: Doc a -> Doc a -> Bool # (>=) :: Doc a -> Doc a -> Bool # max :: Doc a -> Doc a -> Doc a # min :: Doc a -> Doc a -> Doc a #
Ord a => Ord (Hashed a)
Instance details Defined in Data.Hashable.Class Methods compare :: Hashed a -> Hashed a -> Ordering # (<) :: Hashed a -> Hashed a -> Bool # (<=) :: Hashed a -> Hashed a -> Bool # (>) :: Hashed a -> Hashed a -> Bool # (>=) :: Hashed a -> Hashed a -> Bool # max :: Hashed a -> Hashed a -> Hashed a # min :: Hashed a -> Hashed a -> Hashed a #
Ord a => Ord (AddrRange a)
Instance details Defined in Data.IP.Range Methods compare :: AddrRange a -> AddrRange a -> Ordering # (<) :: AddrRange a -> AddrRange a -> Bool # (<=) :: AddrRange a -> AddrRange a -> Bool # (>) :: AddrRange a -> AddrRange a -> Bool # (>=) :: AddrRange a -> AddrRange a -> Bool # max :: AddrRange a -> AddrRange a -> AddrRange a # min :: AddrRange a -> AddrRange a -> AddrRange a #
Ord t => Ord (ErrorItem t)
Instance details Defined in Text.Megaparsec.Error Methods compare :: ErrorItem t -> ErrorItem t -> Ordering # (<) :: ErrorItem t -> ErrorItem t -> Bool # (<=) :: ErrorItem t -> ErrorItem t -> Bool # (>) :: ErrorItem t -> ErrorItem t -> Bool # (>=) :: ErrorItem t -> ErrorItem t -> Bool # max :: ErrorItem t -> ErrorItem t -> ErrorItem t # min :: ErrorItem t -> ErrorItem t -> ErrorItem t #
Ord e => Ord (ErrorFancy e)
Instance details Defined in Text.Megaparsec.Error Methods compare :: ErrorFancy e -> ErrorFancy e -> Ordering # (<) :: ErrorFancy e -> ErrorFancy e -> Bool # (<=) :: ErrorFancy e -> ErrorFancy e -> Bool # (>) :: ErrorFancy e -> ErrorFancy e -> Bool # (>=) :: ErrorFancy e -> ErrorFancy e -> Bool # max :: ErrorFancy e -> ErrorFancy e -> ErrorFancy e # min :: ErrorFancy e -> ErrorFancy e -> ErrorFancy e #
Ord mono => Ord (NonNull mono)
Instance details Defined in Data.NonNull Methods compare :: NonNull mono -> NonNull mono -> Ordering # (<) :: NonNull mono -> NonNull mono -> Bool # (<=) :: NonNull mono -> NonNull mono -> Bool # (>) :: NonNull mono -> NonNull mono -> Bool # (>=) :: NonNull mono -> NonNull mono -> Bool # max :: NonNull mono -> NonNull mono -> NonNull mono # min :: NonNull mono -> NonNull mono -> NonNull mono #
(Ord (Key record), Ord record) => Ord (Entity record)
Instance details Defined in Database.Persist.Class.PersistEntity Methods compare :: Entity record -> Entity record -> Ordering # (<) :: Entity record -> Entity record -> Bool # (<=) :: Entity record -> Entity record -> Bool # (>) :: Entity record -> Entity record -> Bool # (>=) :: Entity record -> Entity record -> Bool # max :: Entity record -> Entity record -> Entity record # min :: Entity record -> Entity record -> Entity record #
Ord ann => Ord (SimpleDocStream ann)
Instance details Defined in Prettyprinter.Internal Methods compare :: SimpleDocStream ann -> SimpleDocStream ann -> Ordering # (<) :: SimpleDocStream ann -> SimpleDocStream ann -> Bool # (<=) :: SimpleDocStream ann -> SimpleDocStream ann -> Bool # (>) :: SimpleDocStream ann -> SimpleDocStream ann -> Bool # (>=) :: SimpleDocStream ann -> SimpleDocStream ann -> Bool # max :: SimpleDocStream ann -> SimpleDocStream ann -> SimpleDocStream ann # min :: SimpleDocStream ann -> SimpleDocStream ann -> SimpleDocStream ann #
(Ord a, Prim a) => Ord (PrimArray a)	Lexicographic ordering. Subject to change between major versions. Since: primitive-0.6.4.0
Instance details Defined in Data.Primitive.PrimArray Methods compare :: PrimArray a -> PrimArray a -> Ordering # (<) :: PrimArray a -> PrimArray a -> Bool # (<=) :: PrimArray a -> PrimArray a -> Bool # (>) :: PrimArray a -> PrimArray a -> Bool # (>=) :: PrimArray a -> PrimArray a -> Bool # max :: PrimArray a -> PrimArray a -> PrimArray a # min :: PrimArray a -> PrimArray a -> PrimArray a #
Ord a => Ord (SmallArray a)	Lexicographic ordering. Subject to change between major versions.
Instance details Defined in Data.Primitive.SmallArray Methods compare :: SmallArray a -> SmallArray a -> Ordering # (<) :: SmallArray a -> SmallArray a -> Bool # (<=) :: SmallArray a -> SmallArray a -> Bool # (>) :: SmallArray a -> SmallArray a -> Bool # (>=) :: SmallArray a -> SmallArray a -> Bool # max :: SmallArray a -> SmallArray a -> SmallArray a # min :: SmallArray a -> SmallArray a -> SmallArray a #
Ord a => Ord (Array a)	Lexicographic ordering. Subject to change between major versions.
Instance details Defined in Data.Primitive.Array Methods compare :: Array a -> Array a -> Ordering # (<) :: Array a -> Array a -> Bool # (<=) :: Array a -> Array a -> Bool # (>) :: Array a -> Array a -> Bool # (>=) :: Array a -> Array a -> Bool # max :: Array a -> Array a -> Array a # min :: Array a -> Array a -> Array a #
Ord g => Ord (AtomicGen g)
Instance details Defined in System.Random.Stateful Methods compare :: AtomicGen g -> AtomicGen g -> Ordering # (<) :: AtomicGen g -> AtomicGen g -> Bool # (<=) :: AtomicGen g -> AtomicGen g -> Bool # (>) :: AtomicGen g -> AtomicGen g -> Bool # (>=) :: AtomicGen g -> AtomicGen g -> Bool # max :: AtomicGen g -> AtomicGen g -> AtomicGen g # min :: AtomicGen g -> AtomicGen g -> AtomicGen g #
Ord g => Ord (IOGen g)
Instance details Defined in System.Random.Stateful Methods compare :: IOGen g -> IOGen g -> Ordering # (<) :: IOGen g -> IOGen g -> Bool # (<=) :: IOGen g -> IOGen g -> Bool # (>) :: IOGen g -> IOGen g -> Bool # (>=) :: IOGen g -> IOGen g -> Bool # max :: IOGen g -> IOGen g -> IOGen g # min :: IOGen g -> IOGen g -> IOGen g #
Ord g => Ord (STGen g)
Instance details Defined in System.Random.Stateful Methods compare :: STGen g -> STGen g -> Ordering # (<) :: STGen g -> STGen g -> Bool # (<=) :: STGen g -> STGen g -> Bool # (>) :: STGen g -> STGen g -> Bool # (>=) :: STGen g -> STGen g -> Bool # max :: STGen g -> STGen g -> STGen g # min :: STGen g -> STGen g -> STGen g #
Ord g => Ord (TGen g)
Instance details Defined in System.Random.Stateful Methods compare :: TGen g -> TGen g -> Ordering # (<) :: TGen g -> TGen g -> Bool # (<=) :: TGen g -> TGen g -> Bool # (>) :: TGen g -> TGen g -> Bool # (>=) :: TGen g -> TGen g -> Bool # max :: TGen g -> TGen g -> TGen g # min :: TGen g -> TGen g -> TGen g #
Ord g => Ord (StateGen g)
Instance details Defined in System.Random.Internal Methods compare :: StateGen g -> StateGen g -> Ordering # (<) :: StateGen g -> StateGen g -> Bool # (<=) :: StateGen g -> StateGen g -> Bool # (>) :: StateGen g -> StateGen g -> Bool # (>=) :: StateGen g -> StateGen g -> Bool # max :: StateGen g -> StateGen g -> StateGen g # min :: StateGen g -> StateGen g -> StateGen g #
Ord a => Ord (Maybe a)
Instance details Defined in Data.Strict.Maybe Methods compare :: Maybe a -> Maybe a -> Ordering # (<) :: Maybe a -> Maybe a -> Bool # (<=) :: Maybe a -> Maybe a -> Bool # (>) :: Maybe a -> Maybe a -> Bool # (>=) :: Maybe a -> Maybe a -> Bool # max :: Maybe a -> Maybe a -> Maybe a # min :: Maybe a -> Maybe a -> Maybe a #
Ord a => Ord (HashSet a)
Instance details Defined in Data.HashSet.Internal Methods compare :: HashSet a -> HashSet a -> Ordering # (<) :: HashSet a -> HashSet a -> Bool # (<=) :: HashSet a -> HashSet a -> Bool # (>) :: HashSet a -> HashSet a -> Bool # (>=) :: HashSet a -> HashSet a -> Bool # max :: HashSet a -> HashSet a -> HashSet a # min :: HashSet a -> HashSet a -> HashSet a #
(Storable a, Ord a) => Ord (Vector a)
Instance details Defined in Data.Vector.Storable Methods compare :: Vector a -> Vector a -> Ordering # (<) :: Vector a -> Vector a -> Bool # (<=) :: Vector a -> Vector a -> Bool # (>) :: Vector a -> Vector a -> Bool # (>=) :: Vector a -> Vector a -> Bool # max :: Vector a -> Vector a -> Vector a # min :: Vector a -> Vector a -> Vector a #
(Prim a, Ord a) => Ord (Vector a)
Instance details Defined in Data.Vector.Primitive Methods compare :: Vector a -> Vector a -> Ordering # (<) :: Vector a -> Vector a -> Bool # (<=) :: Vector a -> Vector a -> Bool # (>) :: Vector a -> Vector a -> Bool # (>=) :: Vector a -> Vector a -> Bool # max :: Vector a -> Vector a -> Vector a # min :: Vector a -> Vector a -> Vector a #
Ord a => Ord (Vector a)
Instance details Defined in Data.Vector Methods compare :: Vector a -> Vector a -> Ordering # (<) :: Vector a -> Vector a -> Bool # (<=) :: Vector a -> Vector a -> Bool # (>) :: Vector a -> Vector a -> Bool # (>=) :: Vector a -> Vector a -> Bool # max :: Vector a -> Vector a -> Vector a # min :: Vector a -> Vector a -> Vector a #
Ord (Route WaiSubsiteWithAuth)
Instance details Defined in Yesod.Core.Types Methods compare :: Route WaiSubsiteWithAuth -> Route WaiSubsiteWithAuth -> Ordering # (<) :: Route WaiSubsiteWithAuth -> Route WaiSubsiteWithAuth -> Bool # (<=) :: Route WaiSubsiteWithAuth -> Route WaiSubsiteWithAuth -> Bool # (>) :: Route WaiSubsiteWithAuth -> Route WaiSubsiteWithAuth -> Bool # (>=) :: Route WaiSubsiteWithAuth -> Route WaiSubsiteWithAuth -> Bool # max :: Route WaiSubsiteWithAuth -> Route WaiSubsiteWithAuth -> Route WaiSubsiteWithAuth # min :: Route WaiSubsiteWithAuth -> Route WaiSubsiteWithAuth -> Route WaiSubsiteWithAuth #
Ord (Route WaiSubsite)
Instance details Defined in Yesod.Core.Types Methods compare :: Route WaiSubsite -> Route WaiSubsite -> Ordering # (<) :: Route WaiSubsite -> Route WaiSubsite -> Bool # (<=) :: Route WaiSubsite -> Route WaiSubsite -> Bool # (>) :: Route WaiSubsite -> Route WaiSubsite -> Bool # (>=) :: Route WaiSubsite -> Route WaiSubsite -> Bool # max :: Route WaiSubsite -> Route WaiSubsite -> Route WaiSubsite # min :: Route WaiSubsite -> Route WaiSubsite -> Route WaiSubsite #
Ord (Route LiteApp)
Instance details Defined in Yesod.Core.Internal.LiteApp Methods compare :: Route LiteApp -> Route LiteApp -> Ordering # (<) :: Route LiteApp -> Route LiteApp -> Bool # (<=) :: Route LiteApp -> Route LiteApp -> Bool # (>) :: Route LiteApp -> Route LiteApp -> Bool # (>=) :: Route LiteApp -> Route LiteApp -> Bool # max :: Route LiteApp -> Route LiteApp -> Route LiteApp # min :: Route LiteApp -> Route LiteApp -> Route LiteApp #
Ord a => Ord (FastTree a)
Instance details Defined in Hledger.Data.Account Methods compare :: FastTree a -> FastTree a -> Ordering # (<) :: FastTree a -> FastTree a -> Bool # (<=) :: FastTree a -> FastTree a -> Bool # (>) :: FastTree a -> FastTree a -> Bool # (>=) :: FastTree a -> FastTree a -> Bool # max :: FastTree a -> FastTree a -> FastTree a # min :: FastTree a -> FastTree a -> FastTree a #
(Ord a, Ord b) => Ord (Either a b)	Since: base-2.1
Instance details Defined in Data.Either Methods compare :: Either a b -> Either a b -> Ordering # (<) :: Either a b -> Either a b -> Bool # (<=) :: Either a b -> Either a b -> Bool # (>) :: Either a b -> Either a b -> Bool # (>=) :: Either a b -> Either a b -> Bool # max :: Either a b -> Either a b -> Either a b # min :: Either a b -> Either a b -> Either a b #
Ord (V1 p)	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Methods compare :: V1 p -> V1 p -> Ordering # (<) :: V1 p -> V1 p -> Bool # (<=) :: V1 p -> V1 p -> Bool # (>) :: V1 p -> V1 p -> Bool # (>=) :: V1 p -> V1 p -> Bool # max :: V1 p -> V1 p -> V1 p # min :: V1 p -> V1 p -> V1 p #
Ord (U1 p)	Since: base-4.7.0.0
Instance details Defined in GHC.Generics Methods compare :: U1 p -> U1 p -> Ordering # (<) :: U1 p -> U1 p -> Bool # (<=) :: U1 p -> U1 p -> Bool # (>) :: U1 p -> U1 p -> Bool # (>=) :: U1 p -> U1 p -> Bool # max :: U1 p -> U1 p -> U1 p # min :: U1 p -> U1 p -> U1 p #
Ord (TypeRep a)	Since: base-4.4.0.0
Instance details Defined in Data.Typeable.Internal Methods compare :: TypeRep a -> TypeRep a -> Ordering # (<) :: TypeRep a -> TypeRep a -> Bool # (<=) :: TypeRep a -> TypeRep a -> Bool # (>) :: TypeRep a -> TypeRep a -> Bool # (>=) :: TypeRep a -> TypeRep a -> Bool # max :: TypeRep a -> TypeRep a -> TypeRep a # min :: TypeRep a -> TypeRep a -> TypeRep a #
(Ord a, Ord b) => Ord (a, b)
Instance details Defined in GHC.Classes Methods compare :: (a, b) -> (a, b) -> Ordering # (<) :: (a, b) -> (a, b) -> Bool # (<=) :: (a, b) -> (a, b) -> Bool # (>) :: (a, b) -> (a, b) -> Bool # (>=) :: (a, b) -> (a, b) -> Bool # max :: (a, b) -> (a, b) -> (a, b) # min :: (a, b) -> (a, b) -> (a, b) #
(Ord k, Ord v) => Ord (HashMap k v)	The ordering is total and consistent with the `Eq` instance. However, nothing else about the ordering is specified, and it may change from version to version of either this package or of hashable.
Instance details Defined in Data.HashMap.Internal Methods compare :: HashMap k v -> HashMap k v -> Ordering # (<) :: HashMap k v -> HashMap k v -> Bool # (<=) :: HashMap k v -> HashMap k v -> Bool # (>) :: HashMap k v -> HashMap k v -> Bool # (>=) :: HashMap k v -> HashMap k v -> Bool # max :: HashMap k v -> HashMap k v -> HashMap k v # min :: HashMap k v -> HashMap k v -> HashMap k v #
(Ord k, Ord v) => Ord (Map k v)
Instance details Defined in Data.Map.Internal Methods compare :: Map k v -> Map k v -> Ordering # (<) :: Map k v -> Map k v -> Bool # (<=) :: Map k v -> Map k v -> Bool # (>) :: Map k v -> Map k v -> Bool # (>=) :: Map k v -> Map k v -> Bool # max :: Map k v -> Map k v -> Map k v # min :: Map k v -> Map k v -> Map k v #
(Ix i, Ord e) => Ord (Array i e)	Since: base-2.1
Instance details Defined in GHC.Arr Methods compare :: Array i e -> Array i e -> Ordering # (<) :: Array i e -> Array i e -> Bool # (<=) :: Array i e -> Array i e -> Bool # (>) :: Array i e -> Array i e -> Bool # (>=) :: Array i e -> Array i e -> Bool # max :: Array i e -> Array i e -> Array i e # min :: Array i e -> Array i e -> Array i e #
Ord (Fixed a)	Since: base-2.1
Instance details Defined in Data.Fixed Methods compare :: Fixed a -> Fixed a -> Ordering # (<) :: Fixed a -> Fixed a -> Bool # (<=) :: Fixed a -> Fixed a -> Bool # (>) :: Fixed a -> Fixed a -> Bool # (>=) :: Fixed a -> Fixed a -> Bool # max :: Fixed a -> Fixed a -> Fixed a # min :: Fixed a -> Fixed a -> Fixed a #
Ord a => Ord (Arg a b)	Since: base-4.9.0.0
Instance details Defined in Data.Semigroup Methods compare :: Arg a b -> Arg a b -> Ordering # (<) :: Arg a b -> Arg a b -> Bool # (<=) :: Arg a b -> Arg a b -> Bool # (>) :: Arg a b -> Arg a b -> Bool # (>=) :: Arg a b -> Arg a b -> Bool # max :: Arg a b -> Arg a b -> Arg a b # min :: Arg a b -> Arg a b -> Arg a b #
Ord (Proxy s)	Since: base-4.7.0.0
Instance details Defined in Data.Proxy Methods compare :: Proxy s -> Proxy s -> Ordering # (<) :: Proxy s -> Proxy s -> Bool # (<=) :: Proxy s -> Proxy s -> Bool # (>) :: Proxy s -> Proxy s -> Bool # (>=) :: Proxy s -> Proxy s -> Bool # max :: Proxy s -> Proxy s -> Proxy s # min :: Proxy s -> Proxy s -> Proxy s #
(Ord1 m, Ord a) => Ord (MaybeT m a)
Instance details Defined in Control.Monad.Trans.Maybe Methods compare :: MaybeT m a -> MaybeT m a -> Ordering # (<) :: MaybeT m a -> MaybeT m a -> Bool # (<=) :: MaybeT m a -> MaybeT m a -> Bool # (>) :: MaybeT m a -> MaybeT m a -> Bool # (>=) :: MaybeT m a -> MaybeT m a -> Bool # max :: MaybeT m a -> MaybeT m a -> MaybeT m a # min :: MaybeT m a -> MaybeT m a -> MaybeT m a #
(Ord a, Ord1 f) => Ord (Free f a)
Instance details Defined in Control.Monad.Free Methods compare :: Free f a -> Free f a -> Ordering # (<) :: Free f a -> Free f a -> Bool # (<=) :: Free f a -> Free f a -> Bool # (>) :: Free f a -> Free f a -> Bool # (>=) :: Free f a -> Free f a -> Bool # max :: Free f a -> Free f a -> Free f a # min :: Free f a -> Free f a -> Free f a #
Ord (ParseError Text CustomErr)
Instance details Defined in Text.Megaparsec.Custom Methods compare :: ParseError Text CustomErr -> ParseError Text CustomErr -> Ordering # (<) :: ParseError Text CustomErr -> ParseError Text CustomErr -> Bool # (<=) :: ParseError Text CustomErr -> ParseError Text CustomErr -> Bool # (>) :: ParseError Text CustomErr -> ParseError Text CustomErr -> Bool # (>=) :: ParseError Text CustomErr -> ParseError Text CustomErr -> Bool # max :: ParseError Text CustomErr -> ParseError Text CustomErr -> ParseError Text CustomErr # min :: ParseError Text CustomErr -> ParseError Text CustomErr -> ParseError Text CustomErr #
(Ord1 m, Ord a) => Ord (ListT m a)
Instance details Defined in Control.Monad.Trans.List Methods compare :: ListT m a -> ListT m a -> Ordering # (<) :: ListT m a -> ListT m a -> Bool # (<=) :: ListT m a -> ListT m a -> Bool # (>) :: ListT m a -> ListT m a -> Bool # (>=) :: ListT m a -> ListT m a -> Bool # max :: ListT m a -> ListT m a -> ListT m a # min :: ListT m a -> ListT m a -> ListT m a #
(Ord a, Ord b) => Ord (Pair a b)
Instance details Defined in Data.Strict.Tuple Methods compare :: Pair a b -> Pair a b -> Ordering # (<) :: Pair a b -> Pair a b -> Bool # (<=) :: Pair a b -> Pair a b -> Bool # (>) :: Pair a b -> Pair a b -> Bool # (>=) :: Pair a b -> Pair a b -> Bool # max :: Pair a b -> Pair a b -> Pair a b # min :: Pair a b -> Pair a b -> Pair a b #
(Ord a, Ord b) => Ord (These a b)
Instance details Defined in Data.Strict.These Methods compare :: These a b -> These a b -> Ordering # (<) :: These a b -> These a b -> Bool # (<=) :: These a b -> These a b -> Bool # (>) :: These a b -> These a b -> Bool # (>=) :: These a b -> These a b -> Bool # max :: These a b -> These a b -> These a b # min :: These a b -> These a b -> These a b #
(Ord a, Ord b) => Ord (Either a b)
Instance details Defined in Data.Strict.Either Methods compare :: Either a b -> Either a b -> Ordering # (<) :: Either a b -> Either a b -> Bool # (<=) :: Either a b -> Either a b -> Bool # (>) :: Either a b -> Either a b -> Bool # (>=) :: Either a b -> Either a b -> Bool # max :: Either a b -> Either a b -> Either a b # min :: Either a b -> Either a b -> Either a b #
(Ord a, Ord b) => Ord (These a b)
Instance details Defined in Data.These Methods compare :: These a b -> These a b -> Ordering # (<) :: These a b -> These a b -> Bool # (<=) :: These a b -> These a b -> Bool # (>) :: These a b -> These a b -> Bool # (>=) :: These a b -> These a b -> Bool # max :: These a b -> These a b -> These a b # min :: These a b -> These a b -> These a b #
Ord (f p) => Ord (Rec1 f p)	Since: base-4.7.0.0
Instance details Defined in GHC.Generics Methods compare :: Rec1 f p -> Rec1 f p -> Ordering # (<) :: Rec1 f p -> Rec1 f p -> Bool # (<=) :: Rec1 f p -> Rec1 f p -> Bool # (>) :: Rec1 f p -> Rec1 f p -> Bool # (>=) :: Rec1 f p -> Rec1 f p -> Bool # max :: Rec1 f p -> Rec1 f p -> Rec1 f p # min :: Rec1 f p -> Rec1 f p -> Rec1 f p #
Ord (URec (Ptr ()) p)	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Methods compare :: URec (Ptr ()) p -> URec (Ptr ()) p -> Ordering # (<) :: URec (Ptr ()) p -> URec (Ptr ()) p -> Bool # (<=) :: URec (Ptr ()) p -> URec (Ptr ()) p -> Bool # (>) :: URec (Ptr ()) p -> URec (Ptr ()) p -> Bool # (>=) :: URec (Ptr ()) p -> URec (Ptr ()) p -> Bool # max :: URec (Ptr ()) p -> URec (Ptr ()) p -> URec (Ptr ()) p # min :: URec (Ptr ()) p -> URec (Ptr ()) p -> URec (Ptr ()) p #
Ord (URec Char p)	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Methods compare :: URec Char p -> URec Char p -> Ordering # (<) :: URec Char p -> URec Char p -> Bool # (<=) :: URec Char p -> URec Char p -> Bool # (>) :: URec Char p -> URec Char p -> Bool # (>=) :: URec Char p -> URec Char p -> Bool # max :: URec Char p -> URec Char p -> URec Char p # min :: URec Char p -> URec Char p -> URec Char p #
Ord (URec Double p)	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Methods compare :: URec Double p -> URec Double p -> Ordering # (<) :: URec Double p -> URec Double p -> Bool # (<=) :: URec Double p -> URec Double p -> Bool # (>) :: URec Double p -> URec Double p -> Bool # (>=) :: URec Double p -> URec Double p -> Bool # max :: URec Double p -> URec Double p -> URec Double p # min :: URec Double p -> URec Double p -> URec Double p #
Ord (URec Float p)
Instance details Defined in GHC.Generics Methods compare :: URec Float p -> URec Float p -> Ordering # (<) :: URec Float p -> URec Float p -> Bool # (<=) :: URec Float p -> URec Float p -> Bool # (>) :: URec Float p -> URec Float p -> Bool # (>=) :: URec Float p -> URec Float p -> Bool # max :: URec Float p -> URec Float p -> URec Float p # min :: URec Float p -> URec Float p -> URec Float p #
Ord (URec Int p)	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Methods compare :: URec Int p -> URec Int p -> Ordering # (<) :: URec Int p -> URec Int p -> Bool # (<=) :: URec Int p -> URec Int p -> Bool # (>) :: URec Int p -> URec Int p -> Bool # (>=) :: URec Int p -> URec Int p -> Bool # max :: URec Int p -> URec Int p -> URec Int p # min :: URec Int p -> URec Int p -> URec Int p #
Ord (URec Word p)	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Methods compare :: URec Word p -> URec Word p -> Ordering # (<) :: URec Word p -> URec Word p -> Bool # (<=) :: URec Word p -> URec Word p -> Bool # (>) :: URec Word p -> URec Word p -> Bool # (>=) :: URec Word p -> URec Word p -> Bool # max :: URec Word p -> URec Word p -> URec Word p # min :: URec Word p -> URec Word p -> URec Word p #
(Ord a, Ord b, Ord c) => Ord (a, b, c)
Instance details Defined in GHC.Classes Methods compare :: (a, b, c) -> (a, b, c) -> Ordering # (<) :: (a, b, c) -> (a, b, c) -> Bool # (<=) :: (a, b, c) -> (a, b, c) -> Bool # (>) :: (a, b, c) -> (a, b, c) -> Bool # (>=) :: (a, b, c) -> (a, b, c) -> Bool # max :: (a, b, c) -> (a, b, c) -> (a, b, c) # min :: (a, b, c) -> (a, b, c) -> (a, b, c) #
Ord a => Ord (Const a b)	Since: base-4.9.0.0
Instance details Defined in Data.Functor.Const Methods compare :: Const a b -> Const a b -> Ordering # (<) :: Const a b -> Const a b -> Bool # (<=) :: Const a b -> Const a b -> Bool # (>) :: Const a b -> Const a b -> Bool # (>=) :: Const a b -> Const a b -> Bool # max :: Const a b -> Const a b -> Const a b # min :: Const a b -> Const a b -> Const a b #
Ord (f a) => Ord (Ap f a)	Since: base-4.12.0.0
Instance details Defined in Data.Monoid Methods compare :: Ap f a -> Ap f a -> Ordering # (<) :: Ap f a -> Ap f a -> Bool # (<=) :: Ap f a -> Ap f a -> Bool # (>) :: Ap f a -> Ap f a -> Bool # (>=) :: Ap f a -> Ap f a -> Bool # max :: Ap f a -> Ap f a -> Ap f a # min :: Ap f a -> Ap f a -> Ap f a #
Ord (f a) => Ord (Alt f a)	Since: base-4.8.0.0
Instance details Defined in Data.Semigroup.Internal Methods compare :: Alt f a -> Alt f a -> Ordering # (<) :: Alt f a -> Alt f a -> Bool # (<=) :: Alt f a -> Alt f a -> Bool # (>) :: Alt f a -> Alt f a -> Bool # (>=) :: Alt f a -> Alt f a -> Bool # max :: Alt f a -> Alt f a -> Alt f a # min :: Alt f a -> Alt f a -> Alt f a #
(Ord1 f, Ord a) => Ord (IdentityT f a)
Instance details Defined in Control.Monad.Trans.Identity Methods compare :: IdentityT f a -> IdentityT f a -> Ordering # (<) :: IdentityT f a -> IdentityT f a -> Bool # (<=) :: IdentityT f a -> IdentityT f a -> Bool # (>) :: IdentityT f a -> IdentityT f a -> Bool # (>=) :: IdentityT f a -> IdentityT f a -> Bool # max :: IdentityT f a -> IdentityT f a -> IdentityT f a # min :: IdentityT f a -> IdentityT f a -> IdentityT f a #
(Ord w, Ord1 m, Ord a) => Ord (WriterT w m a)
Instance details Defined in Control.Monad.Trans.Writer.Strict Methods compare :: WriterT w m a -> WriterT w m a -> Ordering # (<) :: WriterT w m a -> WriterT w m a -> Bool # (<=) :: WriterT w m a -> WriterT w m a -> Bool # (>) :: WriterT w m a -> WriterT w m a -> Bool # (>=) :: WriterT w m a -> WriterT w m a -> Bool # max :: WriterT w m a -> WriterT w m a -> WriterT w m a # min :: WriterT w m a -> WriterT w m a -> WriterT w m a #
(Ord w, Ord1 m, Ord a) => Ord (WriterT w m a)
Instance details Defined in Control.Monad.Trans.Writer.Lazy Methods compare :: WriterT w m a -> WriterT w m a -> Ordering # (<) :: WriterT w m a -> WriterT w m a -> Bool # (<=) :: WriterT w m a -> WriterT w m a -> Bool # (>) :: WriterT w m a -> WriterT w m a -> Bool # (>=) :: WriterT w m a -> WriterT w m a -> Bool # max :: WriterT w m a -> WriterT w m a -> WriterT w m a # min :: WriterT w m a -> WriterT w m a -> WriterT w m a #
(Ord e, Ord1 m, Ord a) => Ord (ExceptT e m a)
Instance details Defined in Control.Monad.Trans.Except Methods compare :: ExceptT e m a -> ExceptT e m a -> Ordering # (<) :: ExceptT e m a -> ExceptT e m a -> Bool # (<=) :: ExceptT e m a -> ExceptT e m a -> Bool # (>) :: ExceptT e m a -> ExceptT e m a -> Bool # (>=) :: ExceptT e m a -> ExceptT e m a -> Bool # max :: ExceptT e m a -> ExceptT e m a -> ExceptT e m a # min :: ExceptT e m a -> ExceptT e m a -> ExceptT e m a #
(Ord e, Ord1 m, Ord a) => Ord (ErrorT e m a)
Instance details Defined in Control.Monad.Trans.Error Methods compare :: ErrorT e m a -> ErrorT e m a -> Ordering # (<) :: ErrorT e m a -> ErrorT e m a -> Bool # (<=) :: ErrorT e m a -> ErrorT e m a -> Bool # (>) :: ErrorT e m a -> ErrorT e m a -> Bool # (>=) :: ErrorT e m a -> ErrorT e m a -> Bool # max :: ErrorT e m a -> ErrorT e m a -> ErrorT e m a # min :: ErrorT e m a -> ErrorT e m a -> ErrorT e m a #
Ord b => Ord (Tagged s b)
Instance details Defined in Data.Tagged Methods compare :: Tagged s b -> Tagged s b -> Ordering # (<) :: Tagged s b -> Tagged s b -> Bool # (<=) :: Tagged s b -> Tagged s b -> Bool # (>) :: Tagged s b -> Tagged s b -> Bool # (>=) :: Tagged s b -> Tagged s b -> Bool # max :: Tagged s b -> Tagged s b -> Tagged s b # min :: Tagged s b -> Tagged s b -> Tagged s b #
(Ord1 f, Ord1 g, Ord a) => Ord (These1 f g a)
Instance details Defined in Data.Functor.These Methods compare :: These1 f g a -> These1 f g a -> Ordering # (<) :: These1 f g a -> These1 f g a -> Bool # (<=) :: These1 f g a -> These1 f g a -> Bool # (>) :: These1 f g a -> These1 f g a -> Bool # (>=) :: These1 f g a -> These1 f g a -> Bool # max :: These1 f g a -> These1 f g a -> These1 f g a # min :: These1 f g a -> These1 f g a -> These1 f g a #
Ord c => Ord (K1 i c p)	Since: base-4.7.0.0
Instance details Defined in GHC.Generics Methods compare :: K1 i c p -> K1 i c p -> Ordering # (<) :: K1 i c p -> K1 i c p -> Bool # (<=) :: K1 i c p -> K1 i c p -> Bool # (>) :: K1 i c p -> K1 i c p -> Bool # (>=) :: K1 i c p -> K1 i c p -> Bool # max :: K1 i c p -> K1 i c p -> K1 i c p # min :: K1 i c p -> K1 i c p -> K1 i c p #
(Ord (f p), Ord (g p)) => Ord ((f :+: g) p)	Since: base-4.7.0.0
Instance details Defined in GHC.Generics Methods compare :: (f :+: g) p -> (f :+: g) p -> Ordering # (<) :: (f :+: g) p -> (f :+: g) p -> Bool # (<=) :: (f :+: g) p -> (f :+: g) p -> Bool # (>) :: (f :+: g) p -> (f :+: g) p -> Bool # (>=) :: (f :+: g) p -> (f :+: g) p -> Bool # max :: (f :+: g) p -> (f :+: g) p -> (f :+: g) p # min :: (f :+: g) p -> (f :+: g) p -> (f :+: g) p #
(Ord (f p), Ord (g p)) => Ord ((f :*: g) p)	Since: base-4.7.0.0
Instance details Defined in GHC.Generics Methods compare :: (f :: g) p -> (f :: g) p -> Ordering # (<) :: (f :: g) p -> (f :: g) p -> Bool # (<=) :: (f :: g) p -> (f :: g) p -> Bool # (>) :: (f :: g) p -> (f :: g) p -> Bool # (>=) :: (f :: g) p -> (f :: g) p -> Bool # max :: (f :: g) p -> (f :: g) p -> (f :: g) p # min :: (f :: g) p -> (f :: g) p -> (f :: g) p #
(Ord a, Ord b, Ord c, Ord d) => Ord (a, b, c, d)
Instance details Defined in GHC.Classes Methods compare :: (a, b, c, d) -> (a, b, c, d) -> Ordering # (<) :: (a, b, c, d) -> (a, b, c, d) -> Bool # (<=) :: (a, b, c, d) -> (a, b, c, d) -> Bool # (>) :: (a, b, c, d) -> (a, b, c, d) -> Bool # (>=) :: (a, b, c, d) -> (a, b, c, d) -> Bool # max :: (a, b, c, d) -> (a, b, c, d) -> (a, b, c, d) # min :: (a, b, c, d) -> (a, b, c, d) -> (a, b, c, d) #
(Ord1 f, Ord1 g, Ord a) => Ord (Product f g a)	Since: base-4.9.0.0
Instance details Defined in Data.Functor.Product Methods compare :: Product f g a -> Product f g a -> Ordering # (<) :: Product f g a -> Product f g a -> Bool # (<=) :: Product f g a -> Product f g a -> Bool # (>) :: Product f g a -> Product f g a -> Bool # (>=) :: Product f g a -> Product f g a -> Bool # max :: Product f g a -> Product f g a -> Product f g a # min :: Product f g a -> Product f g a -> Product f g a #
(Ord1 f, Ord1 g, Ord a) => Ord (Sum f g a)	Since: base-4.9.0.0
Instance details Defined in Data.Functor.Sum Methods compare :: Sum f g a -> Sum f g a -> Ordering # (<) :: Sum f g a -> Sum f g a -> Bool # (<=) :: Sum f g a -> Sum f g a -> Bool # (>) :: Sum f g a -> Sum f g a -> Bool # (>=) :: Sum f g a -> Sum f g a -> Bool # max :: Sum f g a -> Sum f g a -> Sum f g a # min :: Sum f g a -> Sum f g a -> Sum f g a #
Ord (f p) => Ord (M1 i c f p)	Since: base-4.7.0.0
Instance details Defined in GHC.Generics Methods compare :: M1 i c f p -> M1 i c f p -> Ordering # (<) :: M1 i c f p -> M1 i c f p -> Bool # (<=) :: M1 i c f p -> M1 i c f p -> Bool # (>) :: M1 i c f p -> M1 i c f p -> Bool # (>=) :: M1 i c f p -> M1 i c f p -> Bool # max :: M1 i c f p -> M1 i c f p -> M1 i c f p # min :: M1 i c f p -> M1 i c f p -> M1 i c f p #
Ord (f (g p)) => Ord ((f :.: g) p)	Since: base-4.7.0.0
Instance details Defined in GHC.Generics Methods compare :: (f :.: g) p -> (f :.: g) p -> Ordering # (<) :: (f :.: g) p -> (f :.: g) p -> Bool # (<=) :: (f :.: g) p -> (f :.: g) p -> Bool # (>) :: (f :.: g) p -> (f :.: g) p -> Bool # (>=) :: (f :.: g) p -> (f :.: g) p -> Bool # max :: (f :.: g) p -> (f :.: g) p -> (f :.: g) p # min :: (f :.: g) p -> (f :.: g) p -> (f :.: g) p #
(Ord a, Ord b, Ord c, Ord d, Ord e) => Ord (a, b, c, d, e)
Instance details Defined in GHC.Classes Methods compare :: (a, b, c, d, e) -> (a, b, c, d, e) -> Ordering # (<) :: (a, b, c, d, e) -> (a, b, c, d, e) -> Bool # (<=) :: (a, b, c, d, e) -> (a, b, c, d, e) -> Bool # (>) :: (a, b, c, d, e) -> (a, b, c, d, e) -> Bool # (>=) :: (a, b, c, d, e) -> (a, b, c, d, e) -> Bool # max :: (a, b, c, d, e) -> (a, b, c, d, e) -> (a, b, c, d, e) # min :: (a, b, c, d, e) -> (a, b, c, d, e) -> (a, b, c, d, e) #
(Ord1 f, Ord1 g, Ord a) => Ord (Compose f g a)	Since: base-4.9.0.0
Instance details Defined in Data.Functor.Compose Methods compare :: Compose f g a -> Compose f g a -> Ordering # (<) :: Compose f g a -> Compose f g a -> Bool # (<=) :: Compose f g a -> Compose f g a -> Bool # (>) :: Compose f g a -> Compose f g a -> Bool # (>=) :: Compose f g a -> Compose f g a -> Bool # max :: Compose f g a -> Compose f g a -> Compose f g a # min :: Compose f g a -> Compose f g a -> Compose f g a #
Ord (p b a) => Ord (Flip p a b)
Instance details Defined in Data.Bifunctor.Flip Methods compare :: Flip p a b -> Flip p a b -> Ordering # (<) :: Flip p a b -> Flip p a b -> Bool # (<=) :: Flip p a b -> Flip p a b -> Bool # (>) :: Flip p a b -> Flip p a b -> Bool # (>=) :: Flip p a b -> Flip p a b -> Bool # max :: Flip p a b -> Flip p a b -> Flip p a b # min :: Flip p a b -> Flip p a b -> Flip p a b #
(Ord a, Ord b, Ord c, Ord d, Ord e, Ord f) => Ord (a, b, c, d, e, f)
Instance details Defined in GHC.Classes Methods compare :: (a, b, c, d, e, f) -> (a, b, c, d, e, f) -> Ordering # (<) :: (a, b, c, d, e, f) -> (a, b, c, d, e, f) -> Bool # (<=) :: (a, b, c, d, e, f) -> (a, b, c, d, e, f) -> Bool # (>) :: (a, b, c, d, e, f) -> (a, b, c, d, e, f) -> Bool # (>=) :: (a, b, c, d, e, f) -> (a, b, c, d, e, f) -> Bool # max :: (a, b, c, d, e, f) -> (a, b, c, d, e, f) -> (a, b, c, d, e, f) # min :: (a, b, c, d, e, f) -> (a, b, c, d, e, f) -> (a, b, c, d, e, f) #
(Ord (p a b), Ord (q a b)) => Ord (Sum p q a b)
Instance details Defined in Data.Bifunctor.Sum Methods compare :: Sum p q a b -> Sum p q a b -> Ordering # (<) :: Sum p q a b -> Sum p q a b -> Bool # (<=) :: Sum p q a b -> Sum p q a b -> Bool # (>) :: Sum p q a b -> Sum p q a b -> Bool # (>=) :: Sum p q a b -> Sum p q a b -> Bool # max :: Sum p q a b -> Sum p q a b -> Sum p q a b # min :: Sum p q a b -> Sum p q a b -> Sum p q a b #
(Ord (f a b), Ord (g a b)) => Ord (Product f g a b)
Instance details Defined in Data.Bifunctor.Product Methods compare :: Product f g a b -> Product f g a b -> Ordering # (<) :: Product f g a b -> Product f g a b -> Bool # (<=) :: Product f g a b -> Product f g a b -> Bool # (>) :: Product f g a b -> Product f g a b -> Bool # (>=) :: Product f g a b -> Product f g a b -> Bool # max :: Product f g a b -> Product f g a b -> Product f g a b # min :: Product f g a b -> Product f g a b -> Product f g a b #
(Ord a, Ord b, Ord c, Ord d, Ord e, Ord f, Ord g) => Ord (a, b, c, d, e, f, g)
Instance details Defined in GHC.Classes Methods compare :: (a, b, c, d, e, f, g) -> (a, b, c, d, e, f, g) -> Ordering # (<) :: (a, b, c, d, e, f, g) -> (a, b, c, d, e, f, g) -> Bool # (<=) :: (a, b, c, d, e, f, g) -> (a, b, c, d, e, f, g) -> Bool # (>) :: (a, b, c, d, e, f, g) -> (a, b, c, d, e, f, g) -> Bool # (>=) :: (a, b, c, d, e, f, g) -> (a, b, c, d, e, f, g) -> Bool # max :: (a, b, c, d, e, f, g) -> (a, b, c, d, e, f, g) -> (a, b, c, d, e, f, g) # min :: (a, b, c, d, e, f, g) -> (a, b, c, d, e, f, g) -> (a, b, c, d, e, f, g) #
Ord (f (p a b)) => Ord (Tannen f p a b)
Instance details Defined in Data.Bifunctor.Tannen Methods compare :: Tannen f p a b -> Tannen f p a b -> Ordering # (<) :: Tannen f p a b -> Tannen f p a b -> Bool # (<=) :: Tannen f p a b -> Tannen f p a b -> Bool # (>) :: Tannen f p a b -> Tannen f p a b -> Bool # (>=) :: Tannen f p a b -> Tannen f p a b -> Bool # max :: Tannen f p a b -> Tannen f p a b -> Tannen f p a b # min :: Tannen f p a b -> Tannen f p a b -> Tannen f p a b #
(Ord a, Ord b, Ord c, Ord d, Ord e, Ord f, Ord g, Ord h) => Ord (a, b, c, d, e, f, g, h)
Instance details Defined in GHC.Classes Methods compare :: (a, b, c, d, e, f, g, h) -> (a, b, c, d, e, f, g, h) -> Ordering # (<) :: (a, b, c, d, e, f, g, h) -> (a, b, c, d, e, f, g, h) -> Bool # (<=) :: (a, b, c, d, e, f, g, h) -> (a, b, c, d, e, f, g, h) -> Bool # (>) :: (a, b, c, d, e, f, g, h) -> (a, b, c, d, e, f, g, h) -> Bool # (>=) :: (a, b, c, d, e, f, g, h) -> (a, b, c, d, e, f, g, h) -> Bool # max :: (a, b, c, d, e, f, g, h) -> (a, b, c, d, e, f, g, h) -> (a, b, c, d, e, f, g, h) # min :: (a, b, c, d, e, f, g, h) -> (a, b, c, d, e, f, g, h) -> (a, b, c, d, e, f, g, h) #
(Ord a, Ord b, Ord c, Ord d, Ord e, Ord f, Ord g, Ord h, Ord i) => Ord (a, b, c, d, e, f, g, h, i)
Instance details Defined in GHC.Classes Methods compare :: (a, b, c, d, e, f, g, h, i) -> (a, b, c, d, e, f, g, h, i) -> Ordering # (<) :: (a, b, c, d, e, f, g, h, i) -> (a, b, c, d, e, f, g, h, i) -> Bool # (<=) :: (a, b, c, d, e, f, g, h, i) -> (a, b, c, d, e, f, g, h, i) -> Bool # (>) :: (a, b, c, d, e, f, g, h, i) -> (a, b, c, d, e, f, g, h, i) -> Bool # (>=) :: (a, b, c, d, e, f, g, h, i) -> (a, b, c, d, e, f, g, h, i) -> Bool # max :: (a, b, c, d, e, f, g, h, i) -> (a, b, c, d, e, f, g, h, i) -> (a, b, c, d, e, f, g, h, i) # min :: (a, b, c, d, e, f, g, h, i) -> (a, b, c, d, e, f, g, h, i) -> (a, b, c, d, e, f, g, h, i) #
Ord (p (f a) (g b)) => Ord (Biff p f g a b)
Instance details Defined in Data.Bifunctor.Biff Methods compare :: Biff p f g a b -> Biff p f g a b -> Ordering # (<) :: Biff p f g a b -> Biff p f g a b -> Bool # (<=) :: Biff p f g a b -> Biff p f g a b -> Bool # (>) :: Biff p f g a b -> Biff p f g a b -> Bool # (>=) :: Biff p f g a b -> Biff p f g a b -> Bool # max :: Biff p f g a b -> Biff p f g a b -> Biff p f g a b # min :: Biff p f g a b -> Biff p f g a b -> Biff p f g a b #
(Ord a, Ord b, Ord c, Ord d, Ord e, Ord f, Ord g, Ord h, Ord i, Ord j) => Ord (a, b, c, d, e, f, g, h, i, j)
Instance details Defined in GHC.Classes Methods compare :: (a, b, c, d, e, f, g, h, i, j) -> (a, b, c, d, e, f, g, h, i, j) -> Ordering # (<) :: (a, b, c, d, e, f, g, h, i, j) -> (a, b, c, d, e, f, g, h, i, j) -> Bool # (<=) :: (a, b, c, d, e, f, g, h, i, j) -> (a, b, c, d, e, f, g, h, i, j) -> Bool # (>) :: (a, b, c, d, e, f, g, h, i, j) -> (a, b, c, d, e, f, g, h, i, j) -> Bool # (>=) :: (a, b, c, d, e, f, g, h, i, j) -> (a, b, c, d, e, f, g, h, i, j) -> Bool # max :: (a, b, c, d, e, f, g, h, i, j) -> (a, b, c, d, e, f, g, h, i, j) -> (a, b, c, d, e, f, g, h, i, j) # min :: (a, b, c, d, e, f, g, h, i, j) -> (a, b, c, d, e, f, g, h, i, j) -> (a, b, c, d, e, f, g, h, i, j) #
(Ord a, Ord b, Ord c, Ord d, Ord e, Ord f, Ord g, Ord h, Ord i, Ord j, Ord k) => Ord (a, b, c, d, e, f, g, h, i, j, k)
Instance details Defined in GHC.Classes Methods compare :: (a, b, c, d, e, f, g, h, i, j, k) -> (a, b, c, d, e, f, g, h, i, j, k) -> Ordering # (<) :: (a, b, c, d, e, f, g, h, i, j, k) -> (a, b, c, d, e, f, g, h, i, j, k) -> Bool # (<=) :: (a, b, c, d, e, f, g, h, i, j, k) -> (a, b, c, d, e, f, g, h, i, j, k) -> Bool # (>) :: (a, b, c, d, e, f, g, h, i, j, k) -> (a, b, c, d, e, f, g, h, i, j, k) -> Bool # (>=) :: (a, b, c, d, e, f, g, h, i, j, k) -> (a, b, c, d, e, f, g, h, i, j, k) -> Bool # max :: (a, b, c, d, e, f, g, h, i, j, k) -> (a, b, c, d, e, f, g, h, i, j, k) -> (a, b, c, d, e, f, g, h, i, j, k) # min :: (a, b, c, d, e, f, g, h, i, j, k) -> (a, b, c, d, e, f, g, h, i, j, k) -> (a, b, c, d, e, f, g, h, i, j, k) #
(Ord a, Ord b, Ord c, Ord d, Ord e, Ord f, Ord g, Ord h, Ord i, Ord j, Ord k, Ord l) => Ord (a, b, c, d, e, f, g, h, i, j, k, l)
Instance details Defined in GHC.Classes Methods compare :: (a, b, c, d, e, f, g, h, i, j, k, l) -> (a, b, c, d, e, f, g, h, i, j, k, l) -> Ordering # (<) :: (a, b, c, d, e, f, g, h, i, j, k, l) -> (a, b, c, d, e, f, g, h, i, j, k, l) -> Bool # (<=) :: (a, b, c, d, e, f, g, h, i, j, k, l) -> (a, b, c, d, e, f, g, h, i, j, k, l) -> Bool # (>) :: (a, b, c, d, e, f, g, h, i, j, k, l) -> (a, b, c, d, e, f, g, h, i, j, k, l) -> Bool # (>=) :: (a, b, c, d, e, f, g, h, i, j, k, l) -> (a, b, c, d, e, f, g, h, i, j, k, l) -> Bool # max :: (a, b, c, d, e, f, g, h, i, j, k, l) -> (a, b, c, d, e, f, g, h, i, j, k, l) -> (a, b, c, d, e, f, g, h, i, j, k, l) # min :: (a, b, c, d, e, f, g, h, i, j, k, l) -> (a, b, c, d, e, f, g, h, i, j, k, l) -> (a, b, c, d, e, f, g, h, i, j, k, l) #
(Ord a, Ord b, Ord c, Ord d, Ord e, Ord f, Ord g, Ord h, Ord i, Ord j, Ord k, Ord l, Ord m) => Ord (a, b, c, d, e, f, g, h, i, j, k, l, m)
Instance details Defined in GHC.Classes Methods compare :: (a, b, c, d, e, f, g, h, i, j, k, l, m) -> (a, b, c, d, e, f, g, h, i, j, k, l, m) -> Ordering # (<) :: (a, b, c, d, e, f, g, h, i, j, k, l, m) -> (a, b, c, d, e, f, g, h, i, j, k, l, m) -> Bool # (<=) :: (a, b, c, d, e, f, g, h, i, j, k, l, m) -> (a, b, c, d, e, f, g, h, i, j, k, l, m) -> Bool # (>) :: (a, b, c, d, e, f, g, h, i, j, k, l, m) -> (a, b, c, d, e, f, g, h, i, j, k, l, m) -> Bool # (>=) :: (a, b, c, d, e, f, g, h, i, j, k, l, m) -> (a, b, c, d, e, f, g, h, i, j, k, l, m) -> Bool # max :: (a, b, c, d, e, f, g, h, i, j, k, l, m) -> (a, b, c, d, e, f, g, h, i, j, k, l, m) -> (a, b, c, d, e, f, g, h, i, j, k, l, m) # min :: (a, b, c, d, e, f, g, h, i, j, k, l, m) -> (a, b, c, d, e, f, g, h, i, j, k, l, m) -> (a, b, c, d, e, f, g, h, i, j, k, l, m) #
(Ord a, Ord b, Ord c, Ord d, Ord e, Ord f, Ord g, Ord h, Ord i, Ord j, Ord k, Ord l, Ord m, Ord n) => Ord (a, b, c, d, e, f, g, h, i, j, k, l, m, n)
Instance details Defined in GHC.Classes Methods compare :: (a, b, c, d, e, f, g, h, i, j, k, l, m, n) -> (a, b, c, d, e, f, g, h, i, j, k, l, m, n) -> Ordering # (<) :: (a, b, c, d, e, f, g, h, i, j, k, l, m, n) -> (a, b, c, d, e, f, g, h, i, j, k, l, m, n) -> Bool # (<=) :: (a, b, c, d, e, f, g, h, i, j, k, l, m, n) -> (a, b, c, d, e, f, g, h, i, j, k, l, m, n) -> Bool # (>) :: (a, b, c, d, e, f, g, h, i, j, k, l, m, n) -> (a, b, c, d, e, f, g, h, i, j, k, l, m, n) -> Bool # (>=) :: (a, b, c, d, e, f, g, h, i, j, k, l, m, n) -> (a, b, c, d, e, f, g, h, i, j, k, l, m, n) -> Bool # max :: (a, b, c, d, e, f, g, h, i, j, k, l, m, n) -> (a, b, c, d, e, f, g, h, i, j, k, l, m, n) -> (a, b, c, d, e, f, g, h, i, j, k, l, m, n) # min :: (a, b, c, d, e, f, g, h, i, j, k, l, m, n) -> (a, b, c, d, e, f, g, h, i, j, k, l, m, n) -> (a, b, c, d, e, f, g, h, i, j, k, l, m, n) #
(Ord a, Ord b, Ord c, Ord d, Ord e, Ord f, Ord g, Ord h, Ord i, Ord j, Ord k, Ord l, Ord m, Ord n, Ord o) => Ord (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o)
Instance details Defined in GHC.Classes Methods compare :: (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o) -> (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o) -> Ordering # (<) :: (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o) -> (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o) -> Bool # (<=) :: (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o) -> (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o) -> Bool # (>) :: (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o) -> (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o) -> Bool # (>=) :: (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o) -> (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o) -> Bool # max :: (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o) -> (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o) -> (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o) # min :: (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o) -> (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o) -> (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o) #

class Read a where #

Parsing of Strings, producing values.

Derived instances of Read make the following assumptions, which derived instances of Show obey:

If the constructor is defined to be an infix operator, then the derived Read instance will parse only infix applications of the constructor (not the prefix form).
Associativity is not used to reduce the occurrence of parentheses, although precedence may be.
If the constructor is defined using record syntax, the derived Read will parse only the record-syntax form, and furthermore, the fields must be given in the same order as the original declaration.
The derived Read instance allows arbitrary Haskell whitespace between tokens of the input string. Extra parentheses are also allowed.

For example, given the declarations

infixr 5 :^:
data Tree a =  Leaf a  |  Tree a :^: Tree a

the derived instance of Read in Haskell 2010 is equivalent to

instance (Read a) => Read (Tree a) where

        readsPrec d r =  readParen (d > app_prec)
                         (\r -> [(Leaf m,t) |
                                 ("Leaf",s) <- lex r,
                                 (m,t) <- readsPrec (app_prec+1) s]) r

                      ++ readParen (d > up_prec)
                         (\r -> [(u:^:v,w) |
                                 (u,s) <- readsPrec (up_prec+1) r,
                                 (":^:",t) <- lex s,
                                 (v,w) <- readsPrec (up_prec+1) t]) r

          where app_prec = 10
                up_prec = 5

Note that right-associativity of :^: is unused.

The derived instance in GHC is equivalent to

instance (Read a) => Read (Tree a) where

        readPrec = parens $ (prec app_prec $ do
                                 Ident "Leaf" <- lexP
                                 m <- step readPrec
                                 return (Leaf m))

                     +++ (prec up_prec $ do
                                 u <- step readPrec
                                 Symbol ":^:" <- lexP
                                 v <- step readPrec
                                 return (u :^: v))

          where app_prec = 10
                up_prec = 5

        readListPrec = readListPrecDefault

Why do both readsPrec and readPrec exist, and why does GHC opt to implement readPrec in derived Read instances instead of readsPrec? The reason is that readsPrec is based on the ReadS type, and although ReadS is mentioned in the Haskell 2010 Report, it is not a very efficient parser data structure.

readPrec, on the other hand, is based on a much more efficient ReadPrec datatype (a.k.a "new-style parsers"), but its definition relies on the use of the RankNTypes language extension. Therefore, readPrec (and its cousin, readListPrec) are marked as GHC-only. Nevertheless, it is recommended to use readPrec instead of readsPrec whenever possible for the efficiency improvements it brings.

As mentioned above, derived Read instances in GHC will implement readPrec instead of readsPrec. The default implementations of readsPrec (and its cousin, readList) will simply use readPrec under the hood. If you are writing a Read instance by hand, it is recommended to write it like so:

instance Read T where
  readPrec     = ...
  readListPrec = readListPrecDefault

Minimal complete definition

readsPrec | readPrec

Methods

readsPrec #

Arguments

:: Int	the operator precedence of the enclosing context (a number from `0` to `11`). Function application has precedence `10`.
-> ReadS a

attempts to parse a value from the front of the string, returning a list of (parsed value, remaining string) pairs. If there is no successful parse, the returned list is empty.

Derived instances of Read and Show satisfy the following:

(x,"") is an element of (readsPrec d (showsPrec d x "")).

That is, readsPrec parses the string produced by showsPrec, and delivers the value that showsPrec started with.

readList :: ReadS [a] #

The method readList is provided to allow the programmer to give a specialised way of parsing lists of values. For example, this is used by the predefined Read instance of the Char type, where values of type String should be are expected to use double quotes, rather than square brackets.

Instances

Instances details

Read Bool	Since: base-2.1
Instance details Defined in GHC.Read Methods readsPrec :: Int -> ReadS Bool # readList :: ReadS [Bool] # readPrec :: ReadPrec Bool # readListPrec :: ReadPrec [Bool] #
Read Char	Since: base-2.1
Instance details Defined in GHC.Read Methods readsPrec :: Int -> ReadS Char # readList :: ReadS [Char] # readPrec :: ReadPrec Char # readListPrec :: ReadPrec [Char] #
Read Double	Since: base-2.1
Instance details Defined in GHC.Read Methods readsPrec :: Int -> ReadS Double # readList :: ReadS [Double] # readPrec :: ReadPrec Double # readListPrec :: ReadPrec [Double] #
Read Float	Since: base-2.1
Instance details Defined in GHC.Read Methods readsPrec :: Int -> ReadS Float # readList :: ReadS [Float] # readPrec :: ReadPrec Float # readListPrec :: ReadPrec [Float] #
Read Int	Since: base-2.1
Instance details Defined in GHC.Read Methods readsPrec :: Int -> ReadS Int # readList :: ReadS [Int] # readPrec :: ReadPrec Int # readListPrec :: ReadPrec [Int] #
Read Int8	Since: base-2.1
Instance details Defined in GHC.Int Methods readsPrec :: Int -> ReadS Int8 # readList :: ReadS [Int8] # readPrec :: ReadPrec Int8 # readListPrec :: ReadPrec [Int8] #
Read Int16	Since: base-2.1
Instance details Defined in GHC.Int Methods readsPrec :: Int -> ReadS Int16 # readList :: ReadS [Int16] # readPrec :: ReadPrec Int16 # readListPrec :: ReadPrec [Int16] #
Read Int32	Since: base-2.1
Instance details Defined in GHC.Int Methods readsPrec :: Int -> ReadS Int32 # readList :: ReadS [Int32] # readPrec :: ReadPrec Int32 # readListPrec :: ReadPrec [Int32] #
Read Int64	Since: base-2.1
Instance details Defined in GHC.Int Methods readsPrec :: Int -> ReadS Int64 # readList :: ReadS [Int64] # readPrec :: ReadPrec Int64 # readListPrec :: ReadPrec [Int64] #
Read Integer	Since: base-2.1
Instance details Defined in GHC.Read Methods readsPrec :: Int -> ReadS Integer # readList :: ReadS [Integer] # readPrec :: ReadPrec Integer # readListPrec :: ReadPrec [Integer] #
Read Natural	Since: base-4.8.0.0
Instance details Defined in GHC.Read Methods readsPrec :: Int -> ReadS Natural # readList :: ReadS [Natural] # readPrec :: ReadPrec Natural # readListPrec :: ReadPrec [Natural] #
Read Ordering	Since: base-2.1
Instance details Defined in GHC.Read Methods readsPrec :: Int -> ReadS Ordering # readList :: ReadS [Ordering] # readPrec :: ReadPrec Ordering # readListPrec :: ReadPrec [Ordering] #
Read Word	Since: base-4.5.0.0
Instance details Defined in GHC.Read Methods readsPrec :: Int -> ReadS Word # readList :: ReadS [Word] # readPrec :: ReadPrec Word # readListPrec :: ReadPrec [Word] #
Read Word8	Since: base-2.1
Instance details Defined in GHC.Read Methods readsPrec :: Int -> ReadS Word8 # readList :: ReadS [Word8] # readPrec :: ReadPrec Word8 # readListPrec :: ReadPrec [Word8] #
Read Word16	Since: base-2.1
Instance details Defined in GHC.Read Methods readsPrec :: Int -> ReadS Word16 # readList :: ReadS [Word16] # readPrec :: ReadPrec Word16 # readListPrec :: ReadPrec [Word16] #
Read Word32	Since: base-2.1
Instance details Defined in GHC.Read Methods readsPrec :: Int -> ReadS Word32 # readList :: ReadS [Word32] # readPrec :: ReadPrec Word32 # readListPrec :: ReadPrec [Word32] #
Read Word64	Since: base-2.1
Instance details Defined in GHC.Read Methods readsPrec :: Int -> ReadS Word64 # readList :: ReadS [Word64] # readPrec :: ReadPrec Word64 # readListPrec :: ReadPrec [Word64] #
Read ()	Since: base-2.1
Instance details Defined in GHC.Read Methods readsPrec :: Int -> ReadS () # readList :: ReadS [()] # readPrec :: ReadPrec () # readListPrec :: ReadPrec [()] #
Read Version	Since: base-2.1
Instance details Defined in Data.Version Methods readsPrec :: Int -> ReadS Version # readList :: ReadS [Version] # readPrec :: ReadPrec Version # readListPrec :: ReadPrec [Version] #
Read ByteString
Instance details Defined in Data.ByteString.Internal Methods readsPrec :: Int -> ReadS ByteString # readList :: ReadS [ByteString] # readPrec :: ReadPrec ByteString # readListPrec :: ReadPrec [ByteString] #
Read ByteString
Instance details Defined in Data.ByteString.Lazy.Internal Methods readsPrec :: Int -> ReadS ByteString # readList :: ReadS [ByteString] # readPrec :: ReadPrec ByteString # readListPrec :: ReadPrec [ByteString] #
Read Scientific	Supports the skipping of parentheses and whitespaces. Example: > read " ( (( -1.0e+3 ) ))" :: Scientific -1000.0 (Note: This `Read` instance makes internal use of `scientificP` to parse the floating-point number.)
Instance details Defined in Data.Scientific Methods readsPrec :: Int -> ReadS Scientific # readList :: ReadS [Scientific] # readPrec :: ReadPrec Scientific # readListPrec :: ReadPrec [Scientific] #
Read Value
Instance details Defined in Data.Aeson.Types.Internal Methods readsPrec :: Int -> ReadS Value # readList :: ReadS [Value] # readPrec :: ReadPrec Value # readListPrec :: ReadPrec [Value] #
Read DotNetTime
Instance details Defined in Data.Aeson.Types.Internal Methods readsPrec :: Int -> ReadS DotNetTime # readList :: ReadS [DotNetTime] # readPrec :: ReadPrec DotNetTime # readListPrec :: ReadPrec [DotNetTime] #
Read Void	Reading a `Void` value is always a parse error, considering `Void` as a data type with no constructors. Since: base-4.8.0.0
Instance details Defined in Data.Void Methods readsPrec :: Int -> ReadS Void # readList :: ReadS [Void] # readPrec :: ReadPrec Void # readListPrec :: ReadPrec [Void] #
Read ExitCode
Instance details Defined in GHC.IO.Exception Methods readsPrec :: Int -> ReadS ExitCode # readList :: ReadS [ExitCode] # readPrec :: ReadPrec ExitCode # readListPrec :: ReadPrec [ExitCode] #
Read BufferMode	Since: base-4.2.0.0
Instance details Defined in GHC.IO.Handle.Types Methods readsPrec :: Int -> ReadS BufferMode # readList :: ReadS [BufferMode] # readPrec :: ReadPrec BufferMode # readListPrec :: ReadPrec [BufferMode] #
Read Newline	Since: base-4.3.0.0
Instance details Defined in GHC.IO.Handle.Types Methods readsPrec :: Int -> ReadS Newline # readList :: ReadS [Newline] # readPrec :: ReadPrec Newline # readListPrec :: ReadPrec [Newline] #
Read NewlineMode	Since: base-4.3.0.0
Instance details Defined in GHC.IO.Handle.Types Methods readsPrec :: Int -> ReadS NewlineMode # readList :: ReadS [NewlineMode] # readPrec :: ReadPrec NewlineMode # readListPrec :: ReadPrec [NewlineMode] #
Read All	Since: base-2.1
Instance details Defined in Data.Semigroup.Internal Methods readsPrec :: Int -> ReadS All # readList :: ReadS [All] # readPrec :: ReadPrec All # readListPrec :: ReadPrec [All] #
Read Any	Since: base-2.1
Instance details Defined in Data.Semigroup.Internal Methods readsPrec :: Int -> ReadS Any # readList :: ReadS [Any] # readPrec :: ReadPrec Any # readListPrec :: ReadPrec [Any] #
Read Fixity	Since: base-4.6.0.0
Instance details Defined in GHC.Generics Methods readsPrec :: Int -> ReadS Fixity # readList :: ReadS [Fixity] # readPrec :: ReadPrec Fixity # readListPrec :: ReadPrec [Fixity] #
Read Associativity	Since: base-4.6.0.0
Instance details Defined in GHC.Generics Methods readsPrec :: Int -> ReadS Associativity # readList :: ReadS [Associativity] # readPrec :: ReadPrec Associativity # readListPrec :: ReadPrec [Associativity] #
Read SourceUnpackedness	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Methods readsPrec :: Int -> ReadS SourceUnpackedness # readList :: ReadS [SourceUnpackedness] # readPrec :: ReadPrec SourceUnpackedness # readListPrec :: ReadPrec [SourceUnpackedness] #
Read SourceStrictness	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Methods readsPrec :: Int -> ReadS SourceStrictness # readList :: ReadS [SourceStrictness] # readPrec :: ReadPrec SourceStrictness # readListPrec :: ReadPrec [SourceStrictness] #
Read DecidedStrictness	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Methods readsPrec :: Int -> ReadS DecidedStrictness # readList :: ReadS [DecidedStrictness] # readPrec :: ReadPrec DecidedStrictness # readListPrec :: ReadPrec [DecidedStrictness] #
Read SomeSymbol	Since: base-4.7.0.0
Instance details Defined in GHC.TypeLits Methods readsPrec :: Int -> ReadS SomeSymbol # readList :: ReadS [SomeSymbol] # readPrec :: ReadPrec SomeSymbol # readListPrec :: ReadPrec [SomeSymbol] #
Read SomeNat	Since: base-4.7.0.0
Instance details Defined in GHC.TypeNats Methods readsPrec :: Int -> ReadS SomeNat # readList :: ReadS [SomeNat] # readPrec :: ReadPrec SomeNat # readListPrec :: ReadPrec [SomeNat] #
Read CChar
Instance details Defined in Foreign.C.Types Methods readsPrec :: Int -> ReadS CChar # readList :: ReadS [CChar] # readPrec :: ReadPrec CChar # readListPrec :: ReadPrec [CChar] #
Read CSChar
Instance details Defined in Foreign.C.Types Methods readsPrec :: Int -> ReadS CSChar # readList :: ReadS [CSChar] # readPrec :: ReadPrec CSChar # readListPrec :: ReadPrec [CSChar] #
Read CUChar
Instance details Defined in Foreign.C.Types Methods readsPrec :: Int -> ReadS CUChar # readList :: ReadS [CUChar] # readPrec :: ReadPrec CUChar # readListPrec :: ReadPrec [CUChar] #
Read CShort
Instance details Defined in Foreign.C.Types Methods readsPrec :: Int -> ReadS CShort # readList :: ReadS [CShort] # readPrec :: ReadPrec CShort # readListPrec :: ReadPrec [CShort] #
Read CUShort
Instance details Defined in Foreign.C.Types Methods readsPrec :: Int -> ReadS CUShort # readList :: ReadS [CUShort] # readPrec :: ReadPrec CUShort # readListPrec :: ReadPrec [CUShort] #
Read CInt
Instance details Defined in Foreign.C.Types Methods readsPrec :: Int -> ReadS CInt # readList :: ReadS [CInt] # readPrec :: ReadPrec CInt # readListPrec :: ReadPrec [CInt] #
Read CUInt
Instance details Defined in Foreign.C.Types Methods readsPrec :: Int -> ReadS CUInt # readList :: ReadS [CUInt] # readPrec :: ReadPrec CUInt # readListPrec :: ReadPrec [CUInt] #
Read CLong
Instance details Defined in Foreign.C.Types Methods readsPrec :: Int -> ReadS CLong # readList :: ReadS [CLong] # readPrec :: ReadPrec CLong # readListPrec :: ReadPrec [CLong] #
Read CULong
Instance details Defined in Foreign.C.Types Methods readsPrec :: Int -> ReadS CULong # readList :: ReadS [CULong] # readPrec :: ReadPrec CULong # readListPrec :: ReadPrec [CULong] #
Read CLLong
Instance details Defined in Foreign.C.Types Methods readsPrec :: Int -> ReadS CLLong # readList :: ReadS [CLLong] # readPrec :: ReadPrec CLLong # readListPrec :: ReadPrec [CLLong] #
Read CULLong
Instance details Defined in Foreign.C.Types Methods readsPrec :: Int -> ReadS CULLong # readList :: ReadS [CULLong] # readPrec :: ReadPrec CULLong # readListPrec :: ReadPrec [CULLong] #
Read CBool
Instance details Defined in Foreign.C.Types Methods readsPrec :: Int -> ReadS CBool # readList :: ReadS [CBool] # readPrec :: ReadPrec CBool # readListPrec :: ReadPrec [CBool] #
Read CFloat
Instance details Defined in Foreign.C.Types Methods readsPrec :: Int -> ReadS CFloat # readList :: ReadS [CFloat] # readPrec :: ReadPrec CFloat # readListPrec :: ReadPrec [CFloat] #
Read CDouble
Instance details Defined in Foreign.C.Types Methods readsPrec :: Int -> ReadS CDouble # readList :: ReadS [CDouble] # readPrec :: ReadPrec CDouble # readListPrec :: ReadPrec [CDouble] #
Read CPtrdiff
Instance details Defined in Foreign.C.Types Methods readsPrec :: Int -> ReadS CPtrdiff # readList :: ReadS [CPtrdiff] # readPrec :: ReadPrec CPtrdiff # readListPrec :: ReadPrec [CPtrdiff] #
Read CSize
Instance details Defined in Foreign.C.Types Methods readsPrec :: Int -> ReadS CSize # readList :: ReadS [CSize] # readPrec :: ReadPrec CSize # readListPrec :: ReadPrec [CSize] #
Read CWchar
Instance details Defined in Foreign.C.Types Methods readsPrec :: Int -> ReadS CWchar # readList :: ReadS [CWchar] # readPrec :: ReadPrec CWchar # readListPrec :: ReadPrec [CWchar] #
Read CSigAtomic
Instance details Defined in Foreign.C.Types Methods readsPrec :: Int -> ReadS CSigAtomic # readList :: ReadS [CSigAtomic] # readPrec :: ReadPrec CSigAtomic # readListPrec :: ReadPrec [CSigAtomic] #
Read CClock
Instance details Defined in Foreign.C.Types Methods readsPrec :: Int -> ReadS CClock # readList :: ReadS [CClock] # readPrec :: ReadPrec CClock # readListPrec :: ReadPrec [CClock] #
Read CTime
Instance details Defined in Foreign.C.Types Methods readsPrec :: Int -> ReadS CTime # readList :: ReadS [CTime] # readPrec :: ReadPrec CTime # readListPrec :: ReadPrec [CTime] #
Read CUSeconds
Instance details Defined in Foreign.C.Types Methods readsPrec :: Int -> ReadS CUSeconds # readList :: ReadS [CUSeconds] # readPrec :: ReadPrec CUSeconds # readListPrec :: ReadPrec [CUSeconds] #
Read CSUSeconds
Instance details Defined in Foreign.C.Types Methods readsPrec :: Int -> ReadS CSUSeconds # readList :: ReadS [CSUSeconds] # readPrec :: ReadPrec CSUSeconds # readListPrec :: ReadPrec [CSUSeconds] #
Read CIntPtr
Instance details Defined in Foreign.C.Types Methods readsPrec :: Int -> ReadS CIntPtr # readList :: ReadS [CIntPtr] # readPrec :: ReadPrec CIntPtr # readListPrec :: ReadPrec [CIntPtr] #
Read CUIntPtr
Instance details Defined in Foreign.C.Types Methods readsPrec :: Int -> ReadS CUIntPtr # readList :: ReadS [CUIntPtr] # readPrec :: ReadPrec CUIntPtr # readListPrec :: ReadPrec [CUIntPtr] #
Read CIntMax
Instance details Defined in Foreign.C.Types Methods readsPrec :: Int -> ReadS CIntMax # readList :: ReadS [CIntMax] # readPrec :: ReadPrec CIntMax # readListPrec :: ReadPrec [CIntMax] #
Read CUIntMax
Instance details Defined in Foreign.C.Types Methods readsPrec :: Int -> ReadS CUIntMax # readList :: ReadS [CUIntMax] # readPrec :: ReadPrec CUIntMax # readListPrec :: ReadPrec [CUIntMax] #
Read Lexeme	Since: base-2.1
Instance details Defined in GHC.Read Methods readsPrec :: Int -> ReadS Lexeme # readList :: ReadS [Lexeme] # readPrec :: ReadPrec Lexeme # readListPrec :: ReadPrec [Lexeme] #
Read GeneralCategory	Since: base-2.1
Instance details Defined in GHC.Read Methods readsPrec :: Int -> ReadS GeneralCategory # readList :: ReadS [GeneralCategory] # readPrec :: ReadPrec GeneralCategory # readListPrec :: ReadPrec [GeneralCategory] #
Read ShortText
Instance details Defined in Data.Text.Short.Internal Methods readsPrec :: Int -> ReadS ShortText # readList :: ReadS [ShortText] # readPrec :: ReadPrec ShortText # readListPrec :: ReadPrec [ShortText] #
Read Clock
Instance details Defined in System.Clock Methods readsPrec :: Int -> ReadS Clock # readList :: ReadS [Clock] # readPrec :: ReadPrec Clock # readListPrec :: ReadPrec [Clock] #
Read TimeSpec
Instance details Defined in System.Clock Methods readsPrec :: Int -> ReadS TimeSpec # readList :: ReadS [TimeSpec] # readPrec :: ReadPrec TimeSpec # readListPrec :: ReadPrec [TimeSpec] #
Read HelpFormat
Instance details Defined in System.Console.CmdArgs.Explicit.Help Methods readsPrec :: Int -> ReadS HelpFormat # readList :: ReadS [HelpFormat] # readPrec :: ReadPrec HelpFormat # readListPrec :: ReadPrec [HelpFormat] #
Read HostPreference
Instance details Defined in Data.Streaming.Network.Internal Methods readsPrec :: Int -> ReadS HostPreference # readList :: ReadS [HostPreference] # readPrec :: ReadPrec HostPreference # readListPrec :: ReadPrec [HostPreference] #
Read IntSet
Instance details Defined in Data.IntSet.Internal Methods readsPrec :: Int -> ReadS IntSet # readList :: ReadS [IntSet] # readPrec :: ReadPrec IntSet # readListPrec :: ReadPrec [IntSet] #
Read FileType
Instance details Defined in System.Directory.Internal.Common Methods readsPrec :: Int -> ReadS FileType # readList :: ReadS [FileType] # readPrec :: ReadPrec FileType # readListPrec :: ReadPrec [FileType] #
Read Permissions
Instance details Defined in System.Directory.Internal.Common Methods readsPrec :: Int -> ReadS Permissions # readList :: ReadS [Permissions] # readPrec :: ReadPrec Permissions # readListPrec :: ReadPrec [Permissions] #
Read XdgDirectory
Instance details Defined in System.Directory.Internal.Common Methods readsPrec :: Int -> ReadS XdgDirectory # readList :: ReadS [XdgDirectory] # readPrec :: ReadPrec XdgDirectory # readListPrec :: ReadPrec [XdgDirectory] #
Read XdgDirectoryList
Instance details Defined in System.Directory.Internal.Common Methods readsPrec :: Int -> ReadS XdgDirectoryList # readList :: ReadS [XdgDirectoryList] # readPrec :: ReadPrec XdgDirectoryList # readListPrec :: ReadPrec [XdgDirectoryList] #
Read EmailAddress
Instance details Defined in Text.Email.Parser Methods readsPrec :: Int -> ReadS EmailAddress # readList :: ReadS [EmailAddress] # readPrec :: ReadPrec EmailAddress # readListPrec :: ReadPrec [EmailAddress] #
Read SourcePos
Instance details Defined in Text.Megaparsec.Pos Methods readsPrec :: Int -> ReadS SourcePos # readList :: ReadS [SourcePos] # readPrec :: ReadPrec SourcePos # readListPrec :: ReadPrec [SourcePos] #
Read Regexp
Instance details Defined in Hledger.Utils.Regex Methods readsPrec :: Int -> ReadS Regexp # readList :: ReadS [Regexp] # readPrec :: ReadPrec Regexp # readListPrec :: ReadPrec [Regexp] #
Read DigitGroupStyle
Instance details Defined in Hledger.Data.Types Methods readsPrec :: Int -> ReadS DigitGroupStyle # readList :: ReadS [DigitGroupStyle] # readPrec :: ReadPrec DigitGroupStyle # readListPrec :: ReadPrec [DigitGroupStyle] #
Read AmountPrecision
Instance details Defined in Hledger.Data.Types Methods readsPrec :: Int -> ReadS AmountPrecision # readList :: ReadS [AmountPrecision] # readPrec :: ReadPrec AmountPrecision # readListPrec :: ReadPrec [AmountPrecision] #
Read AmountStyle
Instance details Defined in Hledger.Data.Types Methods readsPrec :: Int -> ReadS AmountStyle # readList :: ReadS [AmountStyle] # readPrec :: ReadPrec AmountStyle # readListPrec :: ReadPrec [AmountStyle] #
Read Side
Instance details Defined in Hledger.Data.Types Methods readsPrec :: Int -> ReadS Side # readList :: ReadS [Side] # readPrec :: ReadPrec Side # readListPrec :: ReadPrec [Side] #
Read AccountAlias
Instance details Defined in Hledger.Data.Types Methods readsPrec :: Int -> ReadS AccountAlias # readList :: ReadS [AccountAlias] # readPrec :: ReadPrec AccountAlias # readListPrec :: ReadPrec [AccountAlias] #
Read Cookie
Instance details Defined in Network.HTTP.Client.Types Methods readsPrec :: Int -> ReadS Cookie # readList :: ReadS [Cookie] # readPrec :: ReadPrec Cookie # readListPrec :: ReadPrec [Cookie] #
Read CookieJar
Instance details Defined in Network.HTTP.Client.Types Methods readsPrec :: Int -> ReadS CookieJar # readList :: ReadS [CookieJar] # readPrec :: ReadPrec CookieJar # readListPrec :: ReadPrec [CookieJar] #
Read Proxy
Instance details Defined in Network.HTTP.Client.Types Methods readsPrec :: Int -> ReadS Proxy # readList :: ReadS [Proxy] # readPrec :: ReadPrec Proxy # readListPrec :: ReadPrec [Proxy] #
Read ProxySecureMode
Instance details Defined in Network.HTTP.Client.Types Methods readsPrec :: Int -> ReadS ProxySecureMode # readList :: ReadS [ProxySecureMode] # readPrec :: ReadPrec ProxySecureMode # readListPrec :: ReadPrec [ProxySecureMode] #
Read StdMethod
Instance details Defined in Network.HTTP.Types.Method Methods readsPrec :: Int -> ReadS StdMethod # readList :: ReadS [StdMethod] # readPrec :: ReadPrec StdMethod # readListPrec :: ReadPrec [StdMethod] #
Read IPRange
Instance details Defined in Data.IP.Range Methods readsPrec :: Int -> ReadS IPRange # readList :: ReadS [IPRange] # readPrec :: ReadPrec IPRange # readListPrec :: ReadPrec [IPRange] #
Read IP
Instance details Defined in Data.IP.Addr Methods readsPrec :: Int -> ReadS IP # readList :: ReadS [IP] # readPrec :: ReadPrec IP # readListPrec :: ReadPrec [IP] #
Read IPv4
Instance details Defined in Data.IP.Addr Methods readsPrec :: Int -> ReadS IPv4 # readList :: ReadS [IPv4] # readPrec :: ReadPrec IPv4 # readListPrec :: ReadPrec [IPv4] #
Read IPv6
Instance details Defined in Data.IP.Addr Methods readsPrec :: Int -> ReadS IPv6 # readList :: ReadS [IPv6] # readPrec :: ReadPrec IPv6 # readListPrec :: ReadPrec [IPv6] #
Read Style
Instance details Defined in Text.Libyaml Methods readsPrec :: Int -> ReadS Style # readList :: ReadS [Style] # readPrec :: ReadPrec Style # readListPrec :: ReadPrec [Style] #
Read Tag
Instance details Defined in Text.Libyaml Methods readsPrec :: Int -> ReadS Tag # readList :: ReadS [Tag] # readPrec :: ReadPrec Tag # readListPrec :: ReadPrec [Tag] #
Read Tolerance
Instance details Defined in Numeric.RootFinding Methods readsPrec :: Int -> ReadS Tolerance # readList :: ReadS [Tolerance] # readPrec :: ReadPrec Tolerance # readListPrec :: ReadPrec [Tolerance] #
Read RiddersParam
Instance details Defined in Numeric.RootFinding Methods readsPrec :: Int -> ReadS RiddersParam # readList :: ReadS [RiddersParam] # readPrec :: ReadPrec RiddersParam # readListPrec :: ReadPrec [RiddersParam] #
Read RiddersStep
Instance details Defined in Numeric.RootFinding Methods readsPrec :: Int -> ReadS RiddersStep # readList :: ReadS [RiddersStep] # readPrec :: ReadPrec RiddersStep # readListPrec :: ReadPrec [RiddersStep] #
Read NewtonParam
Instance details Defined in Numeric.RootFinding Methods readsPrec :: Int -> ReadS NewtonParam # readList :: ReadS [NewtonParam] # readPrec :: ReadPrec NewtonParam # readListPrec :: ReadPrec [NewtonParam] #
Read NewtonStep
Instance details Defined in Numeric.RootFinding Methods readsPrec :: Int -> ReadS NewtonStep # readList :: ReadS [NewtonStep] # readPrec :: ReadPrec NewtonStep # readListPrec :: ReadPrec [NewtonStep] #
Read Pos
Instance details Defined in Text.Megaparsec.Pos Methods readsPrec :: Int -> ReadS Pos # readList :: ReadS [Pos] # readPrec :: ReadPrec Pos # readListPrec :: ReadPrec [Pos] #
Read LogLevel
Instance details Defined in Control.Monad.Logger Methods readsPrec :: Int -> ReadS LogLevel # readList :: ReadS [LogLevel] # readPrec :: ReadPrec LogLevel # readListPrec :: ReadPrec [LogLevel] #
Read AddrInfoFlag
Instance details Defined in Network.Socket.Info Methods readsPrec :: Int -> ReadS AddrInfoFlag # readList :: ReadS [AddrInfoFlag] # readPrec :: ReadPrec AddrInfoFlag # readListPrec :: ReadPrec [AddrInfoFlag] #
Read NameInfoFlag
Instance details Defined in Network.Socket.Info Methods readsPrec :: Int -> ReadS NameInfoFlag # readList :: ReadS [NameInfoFlag] # readPrec :: ReadPrec NameInfoFlag # readListPrec :: ReadPrec [NameInfoFlag] #
Read SocketOption
Instance details Defined in Network.Socket.Options Methods readsPrec :: Int -> ReadS SocketOption # readList :: ReadS [SocketOption] # readPrec :: ReadPrec SocketOption # readListPrec :: ReadPrec [SocketOption] #
Read CmsgId
Instance details Defined in Network.Socket.Posix.Cmsg Methods readsPrec :: Int -> ReadS CmsgId # readList :: ReadS [CmsgId] # readPrec :: ReadPrec CmsgId # readListPrec :: ReadPrec [CmsgId] #
Read SocketType
Instance details Defined in Network.Socket.Types Methods readsPrec :: Int -> ReadS SocketType # readList :: ReadS [SocketType] # readPrec :: ReadPrec SocketType # readListPrec :: ReadPrec [SocketType] #
Read Family
Instance details Defined in Network.Socket.Types Methods readsPrec :: Int -> ReadS Family # readList :: ReadS [Family] # readPrec :: ReadPrec Family # readListPrec :: ReadPrec [Family] #
Read PortNumber
Instance details Defined in Network.Socket.Types Methods readsPrec :: Int -> ReadS PortNumber # readList :: ReadS [PortNumber] # readPrec :: ReadPrec PortNumber # readListPrec :: ReadPrec [PortNumber] #
Read SelfEmbed
Instance details Defined in Database.Persist.Types.Base Methods readsPrec :: Int -> ReadS SelfEmbed # readList :: ReadS [SelfEmbed] # readPrec :: ReadPrec SelfEmbed # readListPrec :: ReadPrec [SelfEmbed] #
Read Checkmark
Instance details Defined in Database.Persist.Types.Base Methods readsPrec :: Int -> ReadS Checkmark # readList :: ReadS [Checkmark] # readPrec :: ReadPrec Checkmark # readListPrec :: ReadPrec [Checkmark] #
Read EntityDef
Instance details Defined in Database.Persist.Types.Base Methods readsPrec :: Int -> ReadS EntityDef # readList :: ReadS [EntityDef] # readPrec :: ReadPrec EntityDef # readListPrec :: ReadPrec [EntityDef] #
Read EntityIdDef
Instance details Defined in Database.Persist.Types.Base Methods readsPrec :: Int -> ReadS EntityIdDef # readList :: ReadS [EntityIdDef] # readPrec :: ReadPrec EntityIdDef # readListPrec :: ReadPrec [EntityIdDef] #
Read FieldAttr
Instance details Defined in Database.Persist.Types.Base Methods readsPrec :: Int -> ReadS FieldAttr # readList :: ReadS [FieldAttr] # readPrec :: ReadPrec FieldAttr # readListPrec :: ReadPrec [FieldAttr] #
Read FieldType
Instance details Defined in Database.Persist.Types.Base Methods readsPrec :: Int -> ReadS FieldType # readList :: ReadS [FieldType] # readPrec :: ReadPrec FieldType # readListPrec :: ReadPrec [FieldType] #
Read ReferenceDef
Instance details Defined in Database.Persist.Types.Base Methods readsPrec :: Int -> ReadS ReferenceDef # readList :: ReadS [ReferenceDef] # readPrec :: ReadPrec ReferenceDef # readListPrec :: ReadPrec [ReferenceDef] #
Read EmbedEntityDef
Instance details Defined in Database.Persist.Types.Base Methods readsPrec :: Int -> ReadS EmbedEntityDef # readList :: ReadS [EmbedEntityDef] # readPrec :: ReadPrec EmbedEntityDef # readListPrec :: ReadPrec [EmbedEntityDef] #
Read EmbedFieldDef
Instance details Defined in Database.Persist.Types.Base Methods readsPrec :: Int -> ReadS EmbedFieldDef # readList :: ReadS [EmbedFieldDef] # readPrec :: ReadPrec EmbedFieldDef # readListPrec :: ReadPrec [EmbedFieldDef] #
Read UniqueDef
Instance details Defined in Database.Persist.Types.Base Methods readsPrec :: Int -> ReadS UniqueDef # readList :: ReadS [UniqueDef] # readPrec :: ReadPrec UniqueDef # readListPrec :: ReadPrec [UniqueDef] #
Read CompositeDef
Instance details Defined in Database.Persist.Types.Base Methods readsPrec :: Int -> ReadS CompositeDef # readList :: ReadS [CompositeDef] # readPrec :: ReadPrec CompositeDef # readListPrec :: ReadPrec [CompositeDef] #
Read ForeignDef
Instance details Defined in Database.Persist.Types.Base Methods readsPrec :: Int -> ReadS ForeignDef # readList :: ReadS [ForeignDef] # readPrec :: ReadPrec ForeignDef # readListPrec :: ReadPrec [ForeignDef] #
Read FieldCascade
Instance details Defined in Database.Persist.Types.Base Methods readsPrec :: Int -> ReadS FieldCascade # readList :: ReadS [FieldCascade] # readPrec :: ReadPrec FieldCascade # readListPrec :: ReadPrec [FieldCascade] #
Read CascadeAction
Instance details Defined in Database.Persist.Types.Base Methods readsPrec :: Int -> ReadS CascadeAction # readList :: ReadS [CascadeAction] # readPrec :: ReadPrec CascadeAction # readListPrec :: ReadPrec [CascadeAction] #
Read SqlType
Instance details Defined in Database.Persist.Types.Base Methods readsPrec :: Int -> ReadS SqlType # readList :: ReadS [SqlType] # readPrec :: ReadPrec SqlType # readListPrec :: ReadPrec [SqlType] #
Read PersistFilter
Instance details Defined in Database.Persist.Types.Base Methods readsPrec :: Int -> ReadS PersistFilter # readList :: ReadS [PersistFilter] # readPrec :: ReadPrec PersistFilter # readListPrec :: ReadPrec [PersistFilter] #
Read PersistUpdate
Instance details Defined in Database.Persist.Types.Base Methods readsPrec :: Int -> ReadS PersistUpdate # readList :: ReadS [PersistUpdate] # readPrec :: ReadPrec PersistUpdate # readListPrec :: ReadPrec [PersistUpdate] #
Read FieldDef
Instance details Defined in Database.Persist.Types.Base Methods readsPrec :: Int -> ReadS FieldDef # readList :: ReadS [FieldDef] # readPrec :: ReadPrec FieldDef # readListPrec :: ReadPrec [FieldDef] #
Read PersistValue
Instance details Defined in Database.Persist.PersistValue Methods readsPrec :: Int -> ReadS PersistValue # readList :: ReadS [PersistValue] # readPrec :: ReadPrec PersistValue # readListPrec :: ReadPrec [PersistValue] #
Read LiteralType
Instance details Defined in Database.Persist.PersistValue Methods readsPrec :: Int -> ReadS LiteralType # readList :: ReadS [LiteralType] # readPrec :: ReadPrec LiteralType # readListPrec :: ReadPrec [LiteralType] #
Read FieldNameDB
Instance details Defined in Database.Persist.Names Methods readsPrec :: Int -> ReadS FieldNameDB # readList :: ReadS [FieldNameDB] # readPrec :: ReadPrec FieldNameDB # readListPrec :: ReadPrec [FieldNameDB] #
Read FieldNameHS
Instance details Defined in Database.Persist.Names Methods readsPrec :: Int -> ReadS FieldNameHS # readList :: ReadS [FieldNameHS] # readPrec :: ReadPrec FieldNameHS # readListPrec :: ReadPrec [FieldNameHS] #
Read EntityNameHS
Instance details Defined in Database.Persist.Names Methods readsPrec :: Int -> ReadS EntityNameHS # readList :: ReadS [EntityNameHS] # readPrec :: ReadPrec EntityNameHS # readListPrec :: ReadPrec [EntityNameHS] #
Read EntityNameDB
Instance details Defined in Database.Persist.Names Methods readsPrec :: Int -> ReadS EntityNameDB # readList :: ReadS [EntityNameDB] # readPrec :: ReadPrec EntityNameDB # readListPrec :: ReadPrec [EntityNameDB] #
Read ConstraintNameDB
Instance details Defined in Database.Persist.Names Methods readsPrec :: Int -> ReadS ConstraintNameDB # readList :: ReadS [ConstraintNameDB] # readPrec :: ReadPrec ConstraintNameDB # readListPrec :: ReadPrec [ConstraintNameDB] #
Read ConstraintNameHS
Instance details Defined in Database.Persist.Names Methods readsPrec :: Int -> ReadS ConstraintNameHS # readList :: ReadS [ConstraintNameHS] # readPrec :: ReadPrec ConstraintNameHS # readListPrec :: ReadPrec [ConstraintNameHS] #
Read Content
Instance details Defined in Text.Hamlet.Parse Methods readsPrec :: Int -> ReadS Content # readList :: ReadS [Content] # readPrec :: ReadPrec Content # readListPrec :: ReadPrec [Content] #
Read Doc
Instance details Defined in Text.Hamlet.Parse Methods readsPrec :: Int -> ReadS Doc # readList :: ReadS [Doc] # readPrec :: ReadPrec Doc # readListPrec :: ReadPrec [Doc] #
Read Binding
Instance details Defined in Text.Hamlet.Parse Methods readsPrec :: Int -> ReadS Binding # readList :: ReadS [Binding] # readPrec :: ReadPrec Binding # readListPrec :: ReadPrec [Binding] #
Read DataConstr
Instance details Defined in Text.Hamlet.Parse Methods readsPrec :: Int -> ReadS DataConstr # readList :: ReadS [DataConstr] # readPrec :: ReadPrec DataConstr # readListPrec :: ReadPrec [DataConstr] #
Read Module
Instance details Defined in Text.Hamlet.Parse Methods readsPrec :: Int -> ReadS Module # readList :: ReadS [Module] # readPrec :: ReadPrec Module # readListPrec :: ReadPrec [Module] #
Read DatatypeVariant
Instance details Defined in Language.Haskell.TH.Datatype Methods readsPrec :: Int -> ReadS DatatypeVariant # readList :: ReadS [DatatypeVariant] # readPrec :: ReadPrec DatatypeVariant # readListPrec :: ReadPrec [DatatypeVariant] #
Read DayOfWeek
Instance details Defined in Data.Time.Calendar.Week Methods readsPrec :: Int -> ReadS DayOfWeek # readList :: ReadS [DayOfWeek] # readPrec :: ReadPrec DayOfWeek # readListPrec :: ReadPrec [DayOfWeek] #
Read UnpackedUUID
Instance details Defined in Data.UUID.Types.Internal Methods readsPrec :: Int -> ReadS UnpackedUUID # readList :: ReadS [UnpackedUUID] # readPrec :: ReadPrec UnpackedUUID # readListPrec :: ReadPrec [UnpackedUUID] #
Read UUID
Instance details Defined in Data.UUID.Types.Internal Methods readsPrec :: Int -> ReadS UUID # readList :: ReadS [UUID] # readPrec :: ReadPrec UUID # readListPrec :: ReadPrec [UUID] #
Read CorsResourcePolicy
Instance details Defined in Network.Wai.Middleware.Cors Methods readsPrec :: Int -> ReadS CorsResourcePolicy # readList :: ReadS [CorsResourcePolicy] # readPrec :: ReadPrec CorsResourcePolicy # readListPrec :: ReadPrec [CorsResourcePolicy] #
Read FormMessage
Instance details Defined in Yesod.Form.Types Methods readsPrec :: Int -> ReadS FormMessage # readList :: ReadS [FormMessage] # readPrec :: ReadPrec FormMessage # readListPrec :: ReadPrec [FormMessage] #
Read Textarea
Instance details Defined in Yesod.Form.Fields Methods readsPrec :: Int -> ReadS Textarea # readList :: ReadS [Textarea] # readPrec :: ReadPrec Textarea # readListPrec :: ReadPrec [Textarea] #
Read AuthResult
Instance details Defined in Yesod.Core.Types Methods readsPrec :: Int -> ReadS AuthResult # readList :: ReadS [AuthResult] # readPrec :: ReadPrec AuthResult # readListPrec :: ReadPrec [AuthResult] #
Read DefaultEnv
Instance details Defined in Yesod.Default.Config Methods readsPrec :: Int -> ReadS DefaultEnv # readList :: ReadS [DefaultEnv] # readPrec :: ReadPrec DefaultEnv # readListPrec :: ReadPrec [DefaultEnv] #
Read SessionCookie
Instance details Defined in Yesod.Core.Types Methods readsPrec :: Int -> ReadS SessionCookie # readList :: ReadS [SessionCookie] # readPrec :: ReadPrec SessionCookie # readListPrec :: ReadPrec [SessionCookie] #
Read DictionaryHash
Instance details Defined in Codec.Compression.Zlib.Stream Methods readsPrec :: Int -> ReadS DictionaryHash # readList :: ReadS [DictionaryHash] # readPrec :: ReadPrec DictionaryHash # readListPrec :: ReadPrec [DictionaryHash] #
Read Line
Instance details Defined in Text.Hamlet.Parse Methods readsPrec :: Int -> ReadS Line # readList :: ReadS [Line] # readPrec :: ReadPrec Line # readListPrec :: ReadPrec [Line] #
Read a => Read [a]	Since: base-2.1
Instance details Defined in GHC.Read Methods readsPrec :: Int -> ReadS [a] # readList :: ReadS [[a]] # readPrec :: ReadPrec [a] # readListPrec :: ReadPrec [[a]] #
Read a => Read (Maybe a)	Since: base-2.1
Instance details Defined in GHC.Read Methods readsPrec :: Int -> ReadS (Maybe a) # readList :: ReadS [Maybe a] # readPrec :: ReadPrec (Maybe a) # readListPrec :: ReadPrec [Maybe a] #
(Integral a, Read a) => Read (Ratio a)	Since: base-2.1
Instance details Defined in GHC.Read Methods readsPrec :: Int -> ReadS (Ratio a) # readList :: ReadS [Ratio a] # readPrec :: ReadPrec (Ratio a) # readListPrec :: ReadPrec [Ratio a] #
Read p => Read (Par1 p)	Since: base-4.7.0.0
Instance details Defined in GHC.Generics Methods readsPrec :: Int -> ReadS (Par1 p) # readList :: ReadS [Par1 p] # readPrec :: ReadPrec (Par1 p) # readListPrec :: ReadPrec [Par1 p] #
(Integral i, Read i) => Read (DecimalRaw i)
Instance details Defined in Data.Decimal Methods readsPrec :: Int -> ReadS (DecimalRaw i) # readList :: ReadS [DecimalRaw i] # readPrec :: ReadPrec (DecimalRaw i) # readListPrec :: ReadPrec [DecimalRaw i] #
Read a => Read (Only a)
Instance details Defined in Data.Tuple.Only Methods readsPrec :: Int -> ReadS (Only a) # readList :: ReadS [Only a] # readPrec :: ReadPrec (Only a) # readListPrec :: ReadPrec [Only a] #
Read a => Read (Complex a)	Since: base-2.1
Instance details Defined in Data.Complex Methods readsPrec :: Int -> ReadS (Complex a) # readList :: ReadS [Complex a] # readPrec :: ReadPrec (Complex a) # readListPrec :: ReadPrec [Complex a] #
Read a => Read (Min a)	Since: base-4.9.0.0
Instance details Defined in Data.Semigroup Methods readsPrec :: Int -> ReadS (Min a) # readList :: ReadS [Min a] # readPrec :: ReadPrec (Min a) # readListPrec :: ReadPrec [Min a] #
Read a => Read (Max a)	Since: base-4.9.0.0
Instance details Defined in Data.Semigroup Methods readsPrec :: Int -> ReadS (Max a) # readList :: ReadS [Max a] # readPrec :: ReadPrec (Max a) # readListPrec :: ReadPrec [Max a] #
Read a => Read (First a)	Since: base-4.9.0.0
Instance details Defined in Data.Semigroup Methods readsPrec :: Int -> ReadS (First a) # readList :: ReadS [First a] # readPrec :: ReadPrec (First a) # readListPrec :: ReadPrec [First a] #
Read a => Read (Last a)	Since: base-4.9.0.0
Instance details Defined in Data.Semigroup Methods readsPrec :: Int -> ReadS (Last a) # readList :: ReadS [Last a] # readPrec :: ReadPrec (Last a) # readListPrec :: ReadPrec [Last a] #
Read m => Read (WrappedMonoid m)	Since: base-4.9.0.0
Instance details Defined in Data.Semigroup Methods readsPrec :: Int -> ReadS (WrappedMonoid m) # readList :: ReadS [WrappedMonoid m] # readPrec :: ReadPrec (WrappedMonoid m) # readListPrec :: ReadPrec [WrappedMonoid m] #
Read a => Read (Option a)	Since: base-4.9.0.0
Instance details Defined in Data.Semigroup Methods readsPrec :: Int -> ReadS (Option a) # readList :: ReadS [Option a] # readPrec :: ReadPrec (Option a) # readListPrec :: ReadPrec [Option a] #
Read a => Read (ZipList a)	Since: base-4.7.0.0
Instance details Defined in Control.Applicative Methods readsPrec :: Int -> ReadS (ZipList a) # readList :: ReadS [ZipList a] # readPrec :: ReadPrec (ZipList a) # readListPrec :: ReadPrec [ZipList a] #
Read a => Read (Identity a)	This instance would be equivalent to the derived instances of the `Identity` newtype if the `runIdentity` field were removed Since: base-4.8.0.0
Instance details Defined in Data.Functor.Identity Methods readsPrec :: Int -> ReadS (Identity a) # readList :: ReadS [Identity a] # readPrec :: ReadPrec (Identity a) # readListPrec :: ReadPrec [Identity a] #
Read a => Read (First a)	Since: base-2.1
Instance details Defined in Data.Monoid Methods readsPrec :: Int -> ReadS (First a) # readList :: ReadS [First a] # readPrec :: ReadPrec (First a) # readListPrec :: ReadPrec [First a] #
Read a => Read (Last a)	Since: base-2.1
Instance details Defined in Data.Monoid Methods readsPrec :: Int -> ReadS (Last a) # readList :: ReadS [Last a] # readPrec :: ReadPrec (Last a) # readListPrec :: ReadPrec [Last a] #
Read a => Read (Dual a)	Since: base-2.1
Instance details Defined in Data.Semigroup.Internal Methods readsPrec :: Int -> ReadS (Dual a) # readList :: ReadS [Dual a] # readPrec :: ReadPrec (Dual a) # readListPrec :: ReadPrec [Dual a] #
Read a => Read (Sum a)	Since: base-2.1
Instance details Defined in Data.Semigroup.Internal Methods readsPrec :: Int -> ReadS (Sum a) # readList :: ReadS [Sum a] # readPrec :: ReadPrec (Sum a) # readListPrec :: ReadPrec [Sum a] #
Read a => Read (Product a)	Since: base-2.1
Instance details Defined in Data.Semigroup.Internal Methods readsPrec :: Int -> ReadS (Product a) # readList :: ReadS [Product a] # readPrec :: ReadPrec (Product a) # readListPrec :: ReadPrec [Product a] #
Read a => Read (Down a)	This instance would be equivalent to the derived instances of the `Down` newtype if the `getDown` field were removed Since: base-4.7.0.0
Instance details Defined in Data.Ord Methods readsPrec :: Int -> ReadS (Down a) # readList :: ReadS [Down a] # readPrec :: ReadPrec (Down a) # readListPrec :: ReadPrec [Down a] #
Read a => Read (NonEmpty a)	Since: base-4.11.0.0
Instance details Defined in GHC.Read Methods readsPrec :: Int -> ReadS (NonEmpty a) # readList :: ReadS [NonEmpty a] # readPrec :: ReadPrec (NonEmpty a) # readListPrec :: ReadPrec [NonEmpty a] #
(Read s, FoldCase s) => Read (CI s)
Instance details Defined in Data.CaseInsensitive.Internal Methods readsPrec :: Int -> ReadS (CI s) # readList :: ReadS [CI s] # readPrec :: ReadPrec (CI s) # readListPrec :: ReadPrec [CI s] #
Read e => Read (IntMap e)
Instance details Defined in Data.IntMap.Internal Methods readsPrec :: Int -> ReadS (IntMap e) # readList :: ReadS [IntMap e] # readPrec :: ReadPrec (IntMap e) # readListPrec :: ReadPrec [IntMap e] #
Read vertex => Read (SCC vertex)	Since: containers-0.5.9
Instance details Defined in Data.Graph Methods readsPrec :: Int -> ReadS (SCC vertex) # readList :: ReadS [SCC vertex] # readPrec :: ReadPrec (SCC vertex) # readListPrec :: ReadPrec [SCC vertex] #
Read a => Read (Tree a)
Instance details Defined in Data.Tree Methods readsPrec :: Int -> ReadS (Tree a) # readList :: ReadS [Tree a] # readPrec :: ReadPrec (Tree a) # readListPrec :: ReadPrec [Tree a] #
Read a => Read (Seq a)
Instance details Defined in Data.Sequence.Internal Methods readsPrec :: Int -> ReadS (Seq a) # readList :: ReadS [Seq a] # readPrec :: ReadPrec (Seq a) # readListPrec :: ReadPrec [Seq a] #
Read a => Read (ViewL a)
Instance details Defined in Data.Sequence.Internal Methods readsPrec :: Int -> ReadS (ViewL a) # readList :: ReadS [ViewL a] # readPrec :: ReadPrec (ViewL a) # readListPrec :: ReadPrec [ViewL a] #
Read a => Read (ViewR a)
Instance details Defined in Data.Sequence.Internal Methods readsPrec :: Int -> ReadS (ViewR a) # readList :: ReadS [ViewR a] # readPrec :: ReadPrec (ViewR a) # readListPrec :: ReadPrec [ViewR a] #
(Read a, Ord a) => Read (Set a)
Instance details Defined in Data.Set.Internal Methods readsPrec :: Int -> ReadS (Set a) # readList :: ReadS [Set a] # readPrec :: ReadPrec (Set a) # readListPrec :: ReadPrec [Set a] #
HashAlgorithm a => Read (Digest a)
Instance details Defined in Crypto.Hash.Types Methods readsPrec :: Int -> ReadS (Digest a) # readList :: ReadS [Digest a] # readPrec :: ReadPrec (Digest a) # readListPrec :: ReadPrec [Digest a] #
Read1 f => Read (Fix f)
Instance details Defined in Data.Fix Methods readsPrec :: Int -> ReadS (Fix f) # readList :: ReadS [Fix f] # readPrec :: ReadPrec (Fix f) # readListPrec :: ReadPrec [Fix f] #
(Functor f, Read1 f) => Read (Mu f)
Instance details Defined in Data.Fix Methods readsPrec :: Int -> ReadS (Mu f) # readList :: ReadS [Mu f] # readPrec :: ReadPrec (Mu f) # readListPrec :: ReadPrec [Mu f] #
(Functor f, Read1 f) => Read (Nu f)
Instance details Defined in Data.Fix Methods readsPrec :: Int -> ReadS (Nu f) # readList :: ReadS [Nu f] # readPrec :: ReadPrec (Nu f) # readListPrec :: ReadPrec [Nu f] #
Read a => Read (DNonEmpty a)
Instance details Defined in Data.DList.DNonEmpty.Internal Methods readsPrec :: Int -> ReadS (DNonEmpty a) # readList :: ReadS [DNonEmpty a] # readPrec :: ReadPrec (DNonEmpty a) # readListPrec :: ReadPrec [DNonEmpty a] #
Read a => Read (DList a)
Instance details Defined in Data.DList.Internal Methods readsPrec :: Int -> ReadS (DList a) # readList :: ReadS [DList a] # readPrec :: ReadPrec (DList a) # readListPrec :: ReadPrec [DList a] #
Read a => Read (Doc a)
Instance details Defined in Text.DocLayout Methods readsPrec :: Int -> ReadS (Doc a) # readList :: ReadS [Doc a] # readPrec :: ReadPrec (Doc a) # readListPrec :: ReadPrec [Doc a] #
Read (AddrRange IPv4)
Instance details Defined in Data.IP.Range Methods readsPrec :: Int -> ReadS (AddrRange IPv4) # readList :: ReadS [AddrRange IPv4] # readPrec :: ReadPrec (AddrRange IPv4) # readListPrec :: ReadPrec [AddrRange IPv4] #
Read (AddrRange IPv6)
Instance details Defined in Data.IP.Range Methods readsPrec :: Int -> ReadS (AddrRange IPv6) # readList :: ReadS [AddrRange IPv6] # readPrec :: ReadPrec (AddrRange IPv6) # readListPrec :: ReadPrec [AddrRange IPv6] #
Read a => Read (Root a)
Instance details Defined in Numeric.RootFinding Methods readsPrec :: Int -> ReadS (Root a) # readList :: ReadS [Root a] # readPrec :: ReadPrec (Root a) # readListPrec :: ReadPrec [Root a] #
Read t => Read (ErrorItem t)
Instance details Defined in Text.Megaparsec.Error Methods readsPrec :: Int -> ReadS (ErrorItem t) # readList :: ReadS [ErrorItem t] # readPrec :: ReadPrec (ErrorItem t) # readListPrec :: ReadPrec [ErrorItem t] #
Read e => Read (ErrorFancy e)
Instance details Defined in Text.Megaparsec.Error Methods readsPrec :: Int -> ReadS (ErrorFancy e) # readList :: ReadS [ErrorFancy e] # readPrec :: ReadPrec (ErrorFancy e) # readListPrec :: ReadPrec [ErrorFancy e] #
Read mono => Read (NonNull mono)
Instance details Defined in Data.NonNull Methods readsPrec :: Int -> ReadS (NonNull mono) # readList :: ReadS [NonNull mono] # readPrec :: ReadPrec (NonNull mono) # readListPrec :: ReadPrec [NonNull mono] #
(Read (Key record), Read record) => Read (Entity record)
Instance details Defined in Database.Persist.Class.PersistEntity Methods readsPrec :: Int -> ReadS (Entity record) # readList :: ReadS [Entity record] # readPrec :: ReadPrec (Entity record) # readListPrec :: ReadPrec [Entity record] #
Read a => Read (SmallArray a)
Instance details Defined in Data.Primitive.SmallArray Methods readsPrec :: Int -> ReadS (SmallArray a) # readList :: ReadS [SmallArray a] # readPrec :: ReadPrec (SmallArray a) # readListPrec :: ReadPrec [SmallArray a] #
Read a => Read (Array a)
Instance details Defined in Data.Primitive.Array Methods readsPrec :: Int -> ReadS (Array a) # readList :: ReadS [Array a] # readPrec :: ReadPrec (Array a) # readListPrec :: ReadPrec [Array a] #
Read v => Read (Result v)
Instance details Defined in Text.Hamlet.Parse Methods readsPrec :: Int -> ReadS (Result v) # readList :: ReadS [Result v] # readPrec :: ReadPrec (Result v) # readListPrec :: ReadPrec [Result v] #
Read a => Read (Maybe a)
Instance details Defined in Data.Strict.Maybe Methods readsPrec :: Int -> ReadS (Maybe a) # readList :: ReadS [Maybe a] # readPrec :: ReadPrec (Maybe a) # readListPrec :: ReadPrec [Maybe a] #
(Eq a, Hashable a, Read a) => Read (HashSet a)
Instance details Defined in Data.HashSet.Internal Methods readsPrec :: Int -> ReadS (HashSet a) # readList :: ReadS [HashSet a] # readPrec :: ReadPrec (HashSet a) # readListPrec :: ReadPrec [HashSet a] #
(Read a, Storable a) => Read (Vector a)
Instance details Defined in Data.Vector.Storable Methods readsPrec :: Int -> ReadS (Vector a) # readList :: ReadS [Vector a] # readPrec :: ReadPrec (Vector a) # readListPrec :: ReadPrec [Vector a] #
(Read a, Prim a) => Read (Vector a)
Instance details Defined in Data.Vector.Primitive Methods readsPrec :: Int -> ReadS (Vector a) # readList :: ReadS [Vector a] # readPrec :: ReadPrec (Vector a) # readListPrec :: ReadPrec [Vector a] #
Read a => Read (Vector a)
Instance details Defined in Data.Vector Methods readsPrec :: Int -> ReadS (Vector a) # readList :: ReadS [Vector a] # readPrec :: ReadPrec (Vector a) # readListPrec :: ReadPrec [Vector a] #
Read (Route WaiSubsiteWithAuth)
Instance details Defined in Yesod.Core.Types Methods readsPrec :: Int -> ReadS (Route WaiSubsiteWithAuth) # readList :: ReadS [Route WaiSubsiteWithAuth] # readPrec :: ReadPrec (Route WaiSubsiteWithAuth) # readListPrec :: ReadPrec [Route WaiSubsiteWithAuth] #
Read (Route WaiSubsite)
Instance details Defined in Yesod.Core.Types Methods readsPrec :: Int -> ReadS (Route WaiSubsite) # readList :: ReadS [Route WaiSubsite] # readPrec :: ReadPrec (Route WaiSubsite) # readListPrec :: ReadPrec [Route WaiSubsite] #
Read (Route LiteApp)
Instance details Defined in Yesod.Core.Internal.LiteApp Methods readsPrec :: Int -> ReadS (Route LiteApp) # readList :: ReadS [Route LiteApp] # readPrec :: ReadPrec (Route LiteApp) # readListPrec :: ReadPrec [Route LiteApp] #
Read (Route Static)
Instance details Defined in Yesod.Static Methods readsPrec :: Int -> ReadS (Route Static) # readList :: ReadS [Route Static] # readPrec :: ReadPrec (Route Static) # readListPrec :: ReadPrec [Route Static] #
Read (Route App) Source #
Instance details Defined in Hledger.Web.Foundation Methods readsPrec :: Int -> ReadS (Route App) # readList :: ReadS [Route App] # readPrec :: ReadPrec (Route App) # readListPrec :: ReadPrec [Route App] #
(Read a, Read b) => Read (Either a b)	Since: base-3.0
Instance details Defined in Data.Either Methods readsPrec :: Int -> ReadS (Either a b) # readList :: ReadS [Either a b] # readPrec :: ReadPrec (Either a b) # readListPrec :: ReadPrec [Either a b] #
Read (V1 p)	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Methods readsPrec :: Int -> ReadS (V1 p) # readList :: ReadS [V1 p] # readPrec :: ReadPrec (V1 p) # readListPrec :: ReadPrec [V1 p] #
Read (U1 p)	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Methods readsPrec :: Int -> ReadS (U1 p) # readList :: ReadS [U1 p] # readPrec :: ReadPrec (U1 p) # readListPrec :: ReadPrec [U1 p] #
(Read a, Read b) => Read (a, b)	Since: base-2.1
Instance details Defined in GHC.Read Methods readsPrec :: Int -> ReadS (a, b) # readList :: ReadS [(a, b)] # readPrec :: ReadPrec (a, b) # readListPrec :: ReadPrec [(a, b)] #
(Eq k, Hashable k, Read k, Read e) => Read (HashMap k e)
Instance details Defined in Data.HashMap.Internal Methods readsPrec :: Int -> ReadS (HashMap k e) # readList :: ReadS [HashMap k e] # readPrec :: ReadPrec (HashMap k e) # readListPrec :: ReadPrec [HashMap k e] #
(Ord k, Read k, Read e) => Read (Map k e)
Instance details Defined in Data.Map.Internal Methods readsPrec :: Int -> ReadS (Map k e) # readList :: ReadS [Map k e] # readPrec :: ReadPrec (Map k e) # readListPrec :: ReadPrec [Map k e] #
(Ix a, Read a, Read b) => Read (Array a b)	Since: base-2.1
Instance details Defined in GHC.Read Methods readsPrec :: Int -> ReadS (Array a b) # readList :: ReadS [Array a b] # readPrec :: ReadPrec (Array a b) # readListPrec :: ReadPrec [Array a b] #
HasResolution a => Read (Fixed a)	Since: base-4.3.0.0
Instance details Defined in Data.Fixed Methods readsPrec :: Int -> ReadS (Fixed a) # readList :: ReadS [Fixed a] # readPrec :: ReadPrec (Fixed a) # readListPrec :: ReadPrec [Fixed a] #
(Read a, Read b) => Read (Arg a b)	Since: base-4.9.0.0
Instance details Defined in Data.Semigroup Methods readsPrec :: Int -> ReadS (Arg a b) # readList :: ReadS [Arg a b] # readPrec :: ReadPrec (Arg a b) # readListPrec :: ReadPrec [Arg a b] #
Read (Proxy t)	Since: base-4.7.0.0
Instance details Defined in Data.Proxy Methods readsPrec :: Int -> ReadS (Proxy t) # readList :: ReadS [Proxy t] # readPrec :: ReadPrec (Proxy t) # readListPrec :: ReadPrec [Proxy t] #
(Read1 m, Read a) => Read (MaybeT m a)
Instance details Defined in Control.Monad.Trans.Maybe Methods readsPrec :: Int -> ReadS (MaybeT m a) # readList :: ReadS [MaybeT m a] # readPrec :: ReadPrec (MaybeT m a) # readListPrec :: ReadPrec [MaybeT m a] #
(Read1 m, Read a) => Read (ListT m a)
Instance details Defined in Control.Monad.Trans.List Methods readsPrec :: Int -> ReadS (ListT m a) # readList :: ReadS [ListT m a] # readPrec :: ReadPrec (ListT m a) # readListPrec :: ReadPrec [ListT m a] #
(Read a, Read b) => Read (Pair a b)
Instance details Defined in Data.Strict.Tuple Methods readsPrec :: Int -> ReadS (Pair a b) # readList :: ReadS [Pair a b] # readPrec :: ReadPrec (Pair a b) # readListPrec :: ReadPrec [Pair a b] #
(Read a, Read b) => Read (These a b)
Instance details Defined in Data.Strict.These Methods readsPrec :: Int -> ReadS (These a b) # readList :: ReadS [These a b] # readPrec :: ReadPrec (These a b) # readListPrec :: ReadPrec [These a b] #
(Read a, Read b) => Read (Either a b)
Instance details Defined in Data.Strict.Either Methods readsPrec :: Int -> ReadS (Either a b) # readList :: ReadS [Either a b] # readPrec :: ReadPrec (Either a b) # readListPrec :: ReadPrec [Either a b] #
(Read a, Read b) => Read (These a b)
Instance details Defined in Data.These Methods readsPrec :: Int -> ReadS (These a b) # readList :: ReadS [These a b] # readPrec :: ReadPrec (These a b) # readListPrec :: ReadPrec [These a b] #
Read (f p) => Read (Rec1 f p)	Since: base-4.7.0.0
Instance details Defined in GHC.Generics Methods readsPrec :: Int -> ReadS (Rec1 f p) # readList :: ReadS [Rec1 f p] # readPrec :: ReadPrec (Rec1 f p) # readListPrec :: ReadPrec [Rec1 f p] #
(Read a, Read b, Read c) => Read (a, b, c)	Since: base-2.1
Instance details Defined in GHC.Read Methods readsPrec :: Int -> ReadS (a, b, c) # readList :: ReadS [(a, b, c)] # readPrec :: ReadPrec (a, b, c) # readListPrec :: ReadPrec [(a, b, c)] #
Read a => Read (Const a b)	This instance would be equivalent to the derived instances of the `Const` newtype if the `getConst` field were removed Since: base-4.8.0.0
Instance details Defined in Data.Functor.Const Methods readsPrec :: Int -> ReadS (Const a b) # readList :: ReadS [Const a b] # readPrec :: ReadPrec (Const a b) # readListPrec :: ReadPrec [Const a b] #
Read (f a) => Read (Ap f a)	Since: base-4.12.0.0
Instance details Defined in Data.Monoid Methods readsPrec :: Int -> ReadS (Ap f a) # readList :: ReadS [Ap f a] # readPrec :: ReadPrec (Ap f a) # readListPrec :: ReadPrec [Ap f a] #
Read (f a) => Read (Alt f a)	Since: base-4.8.0.0
Instance details Defined in Data.Semigroup.Internal Methods readsPrec :: Int -> ReadS (Alt f a) # readList :: ReadS [Alt f a] # readPrec :: ReadPrec (Alt f a) # readListPrec :: ReadPrec [Alt f a] #
(Read1 f, Read a) => Read (IdentityT f a)
Instance details Defined in Control.Monad.Trans.Identity Methods readsPrec :: Int -> ReadS (IdentityT f a) # readList :: ReadS [IdentityT f a] # readPrec :: ReadPrec (IdentityT f a) # readListPrec :: ReadPrec [IdentityT f a] #
(Read w, Read1 m, Read a) => Read (WriterT w m a)
Instance details Defined in Control.Monad.Trans.Writer.Strict Methods readsPrec :: Int -> ReadS (WriterT w m a) # readList :: ReadS [WriterT w m a] # readPrec :: ReadPrec (WriterT w m a) # readListPrec :: ReadPrec [WriterT w m a] #
(Read w, Read1 m, Read a) => Read (WriterT w m a)
Instance details Defined in Control.Monad.Trans.Writer.Lazy Methods readsPrec :: Int -> ReadS (WriterT w m a) # readList :: ReadS [WriterT w m a] # readPrec :: ReadPrec (WriterT w m a) # readListPrec :: ReadPrec [WriterT w m a] #
(Read e, Read1 m, Read a) => Read (ExceptT e m a)
Instance details Defined in Control.Monad.Trans.Except Methods readsPrec :: Int -> ReadS (ExceptT e m a) # readList :: ReadS [ExceptT e m a] # readPrec :: ReadPrec (ExceptT e m a) # readListPrec :: ReadPrec [ExceptT e m a] #
(Read e, Read1 m, Read a) => Read (ErrorT e m a)
Instance details Defined in Control.Monad.Trans.Error Methods readsPrec :: Int -> ReadS (ErrorT e m a) # readList :: ReadS [ErrorT e m a] # readPrec :: ReadPrec (ErrorT e m a) # readListPrec :: ReadPrec [ErrorT e m a] #
Read b => Read (Tagged s b)
Instance details Defined in Data.Tagged Methods readsPrec :: Int -> ReadS (Tagged s b) # readList :: ReadS [Tagged s b] # readPrec :: ReadPrec (Tagged s b) # readListPrec :: ReadPrec [Tagged s b] #
(Read1 f, Read1 g, Read a) => Read (These1 f g a)
Instance details Defined in Data.Functor.These Methods readsPrec :: Int -> ReadS (These1 f g a) # readList :: ReadS [These1 f g a] # readPrec :: ReadPrec (These1 f g a) # readListPrec :: ReadPrec [These1 f g a] #
Read c => Read (K1 i c p)	Since: base-4.7.0.0
Instance details Defined in GHC.Generics Methods readsPrec :: Int -> ReadS (K1 i c p) # readList :: ReadS [K1 i c p] # readPrec :: ReadPrec (K1 i c p) # readListPrec :: ReadPrec [K1 i c p] #
(Read (f p), Read (g p)) => Read ((f :+: g) p)	Since: base-4.7.0.0
Instance details Defined in GHC.Generics Methods readsPrec :: Int -> ReadS ((f :+: g) p) # readList :: ReadS [(f :+: g) p] # readPrec :: ReadPrec ((f :+: g) p) # readListPrec :: ReadPrec [(f :+: g) p] #
(Read (f p), Read (g p)) => Read ((f :*: g) p)	Since: base-4.7.0.0
Instance details Defined in GHC.Generics Methods readsPrec :: Int -> ReadS ((f :: g) p) # readList :: ReadS [(f :: g) p] # readPrec :: ReadPrec ((f :: g) p) # readListPrec :: ReadPrec [(f :: g) p] #
(Read a, Read b, Read c, Read d) => Read (a, b, c, d)	Since: base-2.1
Instance details Defined in GHC.Read Methods readsPrec :: Int -> ReadS (a, b, c, d) # readList :: ReadS [(a, b, c, d)] # readPrec :: ReadPrec (a, b, c, d) # readListPrec :: ReadPrec [(a, b, c, d)] #
(Read1 f, Read1 g, Read a) => Read (Product f g a)	Since: base-4.9.0.0
Instance details Defined in Data.Functor.Product Methods readsPrec :: Int -> ReadS (Product f g a) # readList :: ReadS [Product f g a] # readPrec :: ReadPrec (Product f g a) # readListPrec :: ReadPrec [Product f g a] #
(Read1 f, Read1 g, Read a) => Read (Sum f g a)	Since: base-4.9.0.0
Instance details Defined in Data.Functor.Sum Methods readsPrec :: Int -> ReadS (Sum f g a) # readList :: ReadS [Sum f g a] # readPrec :: ReadPrec (Sum f g a) # readListPrec :: ReadPrec [Sum f g a] #
Read (f p) => Read (M1 i c f p)	Since: base-4.7.0.0
Instance details Defined in GHC.Generics Methods readsPrec :: Int -> ReadS (M1 i c f p) # readList :: ReadS [M1 i c f p] # readPrec :: ReadPrec (M1 i c f p) # readListPrec :: ReadPrec [M1 i c f p] #
Read (f (g p)) => Read ((f :.: g) p)	Since: base-4.7.0.0
Instance details Defined in GHC.Generics Methods readsPrec :: Int -> ReadS ((f :.: g) p) # readList :: ReadS [(f :.: g) p] # readPrec :: ReadPrec ((f :.: g) p) # readListPrec :: ReadPrec [(f :.: g) p] #
(Read a, Read b, Read c, Read d, Read e) => Read (a, b, c, d, e)	Since: base-2.1
Instance details Defined in GHC.Read Methods readsPrec :: Int -> ReadS (a, b, c, d, e) # readList :: ReadS [(a, b, c, d, e)] # readPrec :: ReadPrec (a, b, c, d, e) # readListPrec :: ReadPrec [(a, b, c, d, e)] #
(Read1 f, Read1 g, Read a) => Read (Compose f g a)	Since: base-4.9.0.0
Instance details Defined in Data.Functor.Compose Methods readsPrec :: Int -> ReadS (Compose f g a) # readList :: ReadS [Compose f g a] # readPrec :: ReadPrec (Compose f g a) # readListPrec :: ReadPrec [Compose f g a] #
Read (p b a) => Read (Flip p a b)
Instance details Defined in Data.Bifunctor.Flip Methods readsPrec :: Int -> ReadS (Flip p a b) # readList :: ReadS [Flip p a b] # readPrec :: ReadPrec (Flip p a b) # readListPrec :: ReadPrec [Flip p a b] #
(Read a, Read b, Read c, Read d, Read e, Read f) => Read (a, b, c, d, e, f)	Since: base-2.1
Instance details Defined in GHC.Read Methods readsPrec :: Int -> ReadS (a, b, c, d, e, f) # readList :: ReadS [(a, b, c, d, e, f)] # readPrec :: ReadPrec (a, b, c, d, e, f) # readListPrec :: ReadPrec [(a, b, c, d, e, f)] #
(Read (p a b), Read (q a b)) => Read (Sum p q a b)
Instance details Defined in Data.Bifunctor.Sum Methods readsPrec :: Int -> ReadS (Sum p q a b) # readList :: ReadS [Sum p q a b] # readPrec :: ReadPrec (Sum p q a b) # readListPrec :: ReadPrec [Sum p q a b] #
(Read (f a b), Read (g a b)) => Read (Product f g a b)
Instance details Defined in Data.Bifunctor.Product Methods readsPrec :: Int -> ReadS (Product f g a b) # readList :: ReadS [Product f g a b] # readPrec :: ReadPrec (Product f g a b) # readListPrec :: ReadPrec [Product f g a b] #
(Read a, Read b, Read c, Read d, Read e, Read f, Read g) => Read (a, b, c, d, e, f, g)	Since: base-2.1
Instance details Defined in GHC.Read Methods readsPrec :: Int -> ReadS (a, b, c, d, e, f, g) # readList :: ReadS [(a, b, c, d, e, f, g)] # readPrec :: ReadPrec (a, b, c, d, e, f, g) # readListPrec :: ReadPrec [(a, b, c, d, e, f, g)] #
Read (f (p a b)) => Read (Tannen f p a b)
Instance details Defined in Data.Bifunctor.Tannen Methods readsPrec :: Int -> ReadS (Tannen f p a b) # readList :: ReadS [Tannen f p a b] # readPrec :: ReadPrec (Tannen f p a b) # readListPrec :: ReadPrec [Tannen f p a b] #
(Read a, Read b, Read c, Read d, Read e, Read f, Read g, Read h) => Read (a, b, c, d, e, f, g, h)	Since: base-2.1
Instance details Defined in GHC.Read Methods readsPrec :: Int -> ReadS (a, b, c, d, e, f, g, h) # readList :: ReadS [(a, b, c, d, e, f, g, h)] # readPrec :: ReadPrec (a, b, c, d, e, f, g, h) # readListPrec :: ReadPrec [(a, b, c, d, e, f, g, h)] #
(Read a, Read b, Read c, Read d, Read e, Read f, Read g, Read h, Read i) => Read (a, b, c, d, e, f, g, h, i)	Since: base-2.1
Instance details Defined in GHC.Read Methods readsPrec :: Int -> ReadS (a, b, c, d, e, f, g, h, i) # readList :: ReadS [(a, b, c, d, e, f, g, h, i)] # readPrec :: ReadPrec (a, b, c, d, e, f, g, h, i) # readListPrec :: ReadPrec [(a, b, c, d, e, f, g, h, i)] #
Read (p (f a) (g b)) => Read (Biff p f g a b)
Instance details Defined in Data.Bifunctor.Biff Methods readsPrec :: Int -> ReadS (Biff p f g a b) # readList :: ReadS [Biff p f g a b] # readPrec :: ReadPrec (Biff p f g a b) # readListPrec :: ReadPrec [Biff p f g a b] #
(Read a, Read b, Read c, Read d, Read e, Read f, Read g, Read h, Read i, Read j) => Read (a, b, c, d, e, f, g, h, i, j)	Since: base-2.1
Instance details Defined in GHC.Read Methods readsPrec :: Int -> ReadS (a, b, c, d, e, f, g, h, i, j) # readList :: ReadS [(a, b, c, d, e, f, g, h, i, j)] # readPrec :: ReadPrec (a, b, c, d, e, f, g, h, i, j) # readListPrec :: ReadPrec [(a, b, c, d, e, f, g, h, i, j)] #
(Read a, Read b, Read c, Read d, Read e, Read f, Read g, Read h, Read i, Read j, Read k) => Read (a, b, c, d, e, f, g, h, i, j, k)	Since: base-2.1
Instance details Defined in GHC.Read Methods readsPrec :: Int -> ReadS (a, b, c, d, e, f, g, h, i, j, k) # readList :: ReadS [(a, b, c, d, e, f, g, h, i, j, k)] # readPrec :: ReadPrec (a, b, c, d, e, f, g, h, i, j, k) # readListPrec :: ReadPrec [(a, b, c, d, e, f, g, h, i, j, k)] #
(Read a, Read b, Read c, Read d, Read e, Read f, Read g, Read h, Read i, Read j, Read k, Read l) => Read (a, b, c, d, e, f, g, h, i, j, k, l)	Since: base-2.1
Instance details Defined in GHC.Read Methods readsPrec :: Int -> ReadS (a, b, c, d, e, f, g, h, i, j, k, l) # readList :: ReadS [(a, b, c, d, e, f, g, h, i, j, k, l)] # readPrec :: ReadPrec (a, b, c, d, e, f, g, h, i, j, k, l) # readListPrec :: ReadPrec [(a, b, c, d, e, f, g, h, i, j, k, l)] #
(Read a, Read b, Read c, Read d, Read e, Read f, Read g, Read h, Read i, Read j, Read k, Read l, Read m) => Read (a, b, c, d, e, f, g, h, i, j, k, l, m)	Since: base-2.1
Instance details Defined in GHC.Read Methods readsPrec :: Int -> ReadS (a, b, c, d, e, f, g, h, i, j, k, l, m) # readList :: ReadS [(a, b, c, d, e, f, g, h, i, j, k, l, m)] # readPrec :: ReadPrec (a, b, c, d, e, f, g, h, i, j, k, l, m) # readListPrec :: ReadPrec [(a, b, c, d, e, f, g, h, i, j, k, l, m)] #
(Read a, Read b, Read c, Read d, Read e, Read f, Read g, Read h, Read i, Read j, Read k, Read l, Read m, Read n) => Read (a, b, c, d, e, f, g, h, i, j, k, l, m, n)	Since: base-2.1
Instance details Defined in GHC.Read Methods readsPrec :: Int -> ReadS (a, b, c, d, e, f, g, h, i, j, k, l, m, n) # readList :: ReadS [(a, b, c, d, e, f, g, h, i, j, k, l, m, n)] # readPrec :: ReadPrec (a, b, c, d, e, f, g, h, i, j, k, l, m, n) # readListPrec :: ReadPrec [(a, b, c, d, e, f, g, h, i, j, k, l, m, n)] #
(Read a, Read b, Read c, Read d, Read e, Read f, Read g, Read h, Read i, Read j, Read k, Read l, Read m, Read n, Read o) => Read (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o)	Since: base-2.1
Instance details Defined in GHC.Read Methods readsPrec :: Int -> ReadS (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o) # readList :: ReadS [(a, b, c, d, e, f, g, h, i, j, k, l, m, n, o)] # readPrec :: ReadPrec (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o) # readListPrec :: ReadPrec [(a, b, c, d, e, f, g, h, i, j, k, l, m, n, o)] #

class (Num a, Ord a) => Real a where #

Methods

toRational :: a -> Rational #

the rational equivalent of its real argument with full precision

Instances

Instances details

Real Int	Since: base-2.0.1
Instance details Defined in GHC.Real Methods toRational :: Int -> Rational #
Real Int8	Since: base-2.1
Instance details Defined in GHC.Int Methods toRational :: Int8 -> Rational #
Real Int16	Since: base-2.1
Instance details Defined in GHC.Int Methods toRational :: Int16 -> Rational #
Real Int32	Since: base-2.1
Instance details Defined in GHC.Int Methods toRational :: Int32 -> Rational #
Real Int64	Since: base-2.1
Instance details Defined in GHC.Int Methods toRational :: Int64 -> Rational #
Real Integer	Since: base-2.0.1
Instance details Defined in GHC.Real Methods toRational :: Integer -> Rational #
Real Natural	Since: base-4.8.0.0
Instance details Defined in GHC.Real Methods toRational :: Natural -> Rational #
Real Word	Since: base-2.1
Instance details Defined in GHC.Real Methods toRational :: Word -> Rational #
Real Word8	Since: base-2.1
Instance details Defined in GHC.Word Methods toRational :: Word8 -> Rational #
Real Word16	Since: base-2.1
Instance details Defined in GHC.Word Methods toRational :: Word16 -> Rational #
Real Word32	Since: base-2.1
Instance details Defined in GHC.Word Methods toRational :: Word32 -> Rational #
Real Word64	Since: base-2.1
Instance details Defined in GHC.Word Methods toRational :: Word64 -> Rational #
Real Scientific	WARNING: `toRational` needs to compute the `Integer` magnitude: `10^e`. If applied to a huge exponent this could fill up all space and crash your program! Avoid applying `toRational` (or `realToFrac`) to scientific numbers coming from an untrusted source and use `toRealFloat` instead. The latter guards against excessive space usage.
Instance details Defined in Data.Scientific Methods toRational :: Scientific -> Rational #
Real CChar
Instance details Defined in Foreign.C.Types Methods toRational :: CChar -> Rational #
Real CSChar
Instance details Defined in Foreign.C.Types Methods toRational :: CSChar -> Rational #
Real CUChar
Instance details Defined in Foreign.C.Types Methods toRational :: CUChar -> Rational #
Real CShort
Instance details Defined in Foreign.C.Types Methods toRational :: CShort -> Rational #
Real CUShort
Instance details Defined in Foreign.C.Types Methods toRational :: CUShort -> Rational #
Real CInt
Instance details Defined in Foreign.C.Types Methods toRational :: CInt -> Rational #
Real CUInt
Instance details Defined in Foreign.C.Types Methods toRational :: CUInt -> Rational #
Real CLong
Instance details Defined in Foreign.C.Types Methods toRational :: CLong -> Rational #
Real CULong
Instance details Defined in Foreign.C.Types Methods toRational :: CULong -> Rational #
Real CLLong
Instance details Defined in Foreign.C.Types Methods toRational :: CLLong -> Rational #
Real CULLong
Instance details Defined in Foreign.C.Types Methods toRational :: CULLong -> Rational #
Real CBool
Instance details Defined in Foreign.C.Types Methods toRational :: CBool -> Rational #
Real CFloat
Instance details Defined in Foreign.C.Types Methods toRational :: CFloat -> Rational #
Real CDouble
Instance details Defined in Foreign.C.Types Methods toRational :: CDouble -> Rational #
Real CPtrdiff
Instance details Defined in Foreign.C.Types Methods toRational :: CPtrdiff -> Rational #
Real CSize
Instance details Defined in Foreign.C.Types Methods toRational :: CSize -> Rational #
Real CWchar
Instance details Defined in Foreign.C.Types Methods toRational :: CWchar -> Rational #
Real CSigAtomic
Instance details Defined in Foreign.C.Types Methods toRational :: CSigAtomic -> Rational #
Real CClock
Instance details Defined in Foreign.C.Types Methods toRational :: CClock -> Rational #
Real CTime
Instance details Defined in Foreign.C.Types Methods toRational :: CTime -> Rational #
Real CUSeconds
Instance details Defined in Foreign.C.Types Methods toRational :: CUSeconds -> Rational #
Real CSUSeconds
Instance details Defined in Foreign.C.Types Methods toRational :: CSUSeconds -> Rational #
Real CIntPtr
Instance details Defined in Foreign.C.Types Methods toRational :: CIntPtr -> Rational #
Real CUIntPtr
Instance details Defined in Foreign.C.Types Methods toRational :: CUIntPtr -> Rational #
Real CIntMax
Instance details Defined in Foreign.C.Types Methods toRational :: CIntMax -> Rational #
Real CUIntMax
Instance details Defined in Foreign.C.Types Methods toRational :: CUIntMax -> Rational #
Real PortNumber
Instance details Defined in Network.Socket.Types Methods toRational :: PortNumber -> Rational #
Real NominalDiffTime
Instance details Defined in Data.Time.Clock.Internal.NominalDiffTime Methods toRational :: NominalDiffTime -> Rational #
Real DiffTime
Instance details Defined in Data.Time.Clock.Internal.DiffTime Methods toRational :: DiffTime -> Rational #
Integral a => Real (Ratio a)	Since: base-2.0.1
Instance details Defined in GHC.Real Methods toRational :: Ratio a -> Rational #
Integral i => Real (DecimalRaw i)
Instance details Defined in Data.Decimal Methods toRational :: DecimalRaw i -> Rational #
Real a => Real (Identity a)	Since: base-4.9.0.0
Instance details Defined in Data.Functor.Identity Methods toRational :: Identity a -> Rational #
Real a => Real (Down a)	Since: base-4.14.0.0
Instance details Defined in Data.Ord Methods toRational :: Down a -> Rational #
HasResolution a => Real (Fixed a)	Since: base-2.1
Instance details Defined in Data.Fixed Methods toRational :: Fixed a -> Rational #
Real a => Real (Const a b)	Since: base-4.9.0.0
Instance details Defined in Data.Functor.Const Methods toRational :: Const a b -> Rational #
Real a => Real (Tagged s a)
Instance details Defined in Data.Tagged Methods toRational :: Tagged s a -> Rational #

class (RealFrac a, Floating a) => RealFloat a where #

Efficient, machine-independent access to the components of a floating-point number.

Minimal complete definition

floatRadix, floatDigits, floatRange, decodeFloat, encodeFloat, isNaN, isInfinite, isDenormalized, isNegativeZero, isIEEE

Methods

floatRadix :: a -> Integer #

a constant function, returning the radix of the representation (often 2)

floatDigits :: a -> Int #

a constant function, returning the number of digits of floatRadix in the significand

floatRange :: a -> (Int, Int) #

a constant function, returning the lowest and highest values the exponent may assume

decodeFloat :: a -> (Integer, Int) #

The function decodeFloat applied to a real floating-point number returns the significand expressed as an Integer and an appropriately scaled exponent (an Int). If decodeFloat x yields (m,n), then x is equal in value to m*b^^n, where b is the floating-point radix, and furthermore, either m and n are both zero or else b^(d-1) <= abs m < b^d, where d is the value of floatDigits x. In particular, decodeFloat 0 = (0,0). If the type contains a negative zero, also decodeFloat (-0.0) = (0,0). The result of decodeFloat x is unspecified if either of isNaN x or isInfinite x is True.

encodeFloat :: Integer -> Int -> a #

encodeFloat performs the inverse of decodeFloat in the sense that for finite x with the exception of -0.0, uncurry encodeFloat (decodeFloat x) = x. encodeFloat m n is one of the two closest representable floating-point numbers to m*b^^n (or ±Infinity if overflow occurs); usually the closer, but if m contains too many bits, the result may be rounded in the wrong direction.

exponent :: a -> Int #

exponent corresponds to the second component of decodeFloat. exponent 0 = 0 and for finite nonzero x, exponent x = snd (decodeFloat x) + floatDigits x. If x is a finite floating-point number, it is equal in value to significand x * b ^^ exponent x, where b is the floating-point radix. The behaviour is unspecified on infinite or NaN values.

significand :: a -> a #

The first component of decodeFloat, scaled to lie in the open interval (-1,1), either 0.0 or of absolute value >= 1/b, where b is the floating-point radix. The behaviour is unspecified on infinite or NaN values.

scaleFloat :: Int -> a -> a #

multiplies a floating-point number by an integer power of the radix

isNaN :: a -> Bool #

True if the argument is an IEEE "not-a-number" (NaN) value

isInfinite :: a -> Bool #

True if the argument is an IEEE infinity or negative infinity

isDenormalized :: a -> Bool #

True if the argument is too small to be represented in normalized format

isNegativeZero :: a -> Bool #

True if the argument is an IEEE negative zero

isIEEE :: a -> Bool #

True if the argument is an IEEE floating point number

atan2 :: a -> a -> a #

a version of arctangent taking two real floating-point arguments. For real floating x and y, atan2 y x computes the angle (from the positive x-axis) of the vector from the origin to the point (x,y). atan2 y x returns a value in the range [-pi, pi]. It follows the Common Lisp semantics for the origin when signed zeroes are supported. atan2 y 1, with y in a type that is RealFloat, should return the same value as atan y. A default definition of atan2 is provided, but implementors can provide a more accurate implementation.

Instances

Instances details

RealFloat Double	Since: base-2.1
Instance details Defined in GHC.Float Methods floatRadix :: Double -> Integer # floatDigits :: Double -> Int # floatRange :: Double -> (Int, Int) # decodeFloat :: Double -> (Integer, Int) # encodeFloat :: Integer -> Int -> Double # exponent :: Double -> Int # significand :: Double -> Double # scaleFloat :: Int -> Double -> Double # isNaN :: Double -> Bool # isInfinite :: Double -> Bool # isDenormalized :: Double -> Bool # isNegativeZero :: Double -> Bool # isIEEE :: Double -> Bool # atan2 :: Double -> Double -> Double #
RealFloat Float	Since: base-2.1
Instance details Defined in GHC.Float Methods floatRadix :: Float -> Integer # floatDigits :: Float -> Int # floatRange :: Float -> (Int, Int) # decodeFloat :: Float -> (Integer, Int) # encodeFloat :: Integer -> Int -> Float # exponent :: Float -> Int # significand :: Float -> Float # scaleFloat :: Int -> Float -> Float # isNaN :: Float -> Bool # isInfinite :: Float -> Bool # isDenormalized :: Float -> Bool # isNegativeZero :: Float -> Bool # isIEEE :: Float -> Bool # atan2 :: Float -> Float -> Float #
RealFloat CFloat
Instance details Defined in Foreign.C.Types Methods floatRadix :: CFloat -> Integer # floatDigits :: CFloat -> Int # floatRange :: CFloat -> (Int, Int) # decodeFloat :: CFloat -> (Integer, Int) # encodeFloat :: Integer -> Int -> CFloat # exponent :: CFloat -> Int # significand :: CFloat -> CFloat # scaleFloat :: Int -> CFloat -> CFloat # isNaN :: CFloat -> Bool # isInfinite :: CFloat -> Bool # isDenormalized :: CFloat -> Bool # isNegativeZero :: CFloat -> Bool # isIEEE :: CFloat -> Bool # atan2 :: CFloat -> CFloat -> CFloat #
RealFloat CDouble
Instance details Defined in Foreign.C.Types Methods floatRadix :: CDouble -> Integer # floatDigits :: CDouble -> Int # floatRange :: CDouble -> (Int, Int) # decodeFloat :: CDouble -> (Integer, Int) # encodeFloat :: Integer -> Int -> CDouble # exponent :: CDouble -> Int # significand :: CDouble -> CDouble # scaleFloat :: Int -> CDouble -> CDouble # isNaN :: CDouble -> Bool # isInfinite :: CDouble -> Bool # isDenormalized :: CDouble -> Bool # isNegativeZero :: CDouble -> Bool # isIEEE :: CDouble -> Bool # atan2 :: CDouble -> CDouble -> CDouble #
RealFloat a => RealFloat (Identity a)	Since: base-4.9.0.0
Instance details Defined in Data.Functor.Identity Methods floatRadix :: Identity a -> Integer # floatDigits :: Identity a -> Int # floatRange :: Identity a -> (Int, Int) # decodeFloat :: Identity a -> (Integer, Int) # encodeFloat :: Integer -> Int -> Identity a # exponent :: Identity a -> Int # significand :: Identity a -> Identity a # scaleFloat :: Int -> Identity a -> Identity a # isNaN :: Identity a -> Bool # isInfinite :: Identity a -> Bool # isDenormalized :: Identity a -> Bool # isNegativeZero :: Identity a -> Bool # isIEEE :: Identity a -> Bool # atan2 :: Identity a -> Identity a -> Identity a #
RealFloat a => RealFloat (Down a)	Since: base-4.14.0.0
Instance details Defined in Data.Ord Methods floatRadix :: Down a -> Integer # floatDigits :: Down a -> Int # floatRange :: Down a -> (Int, Int) # decodeFloat :: Down a -> (Integer, Int) # encodeFloat :: Integer -> Int -> Down a # exponent :: Down a -> Int # significand :: Down a -> Down a # scaleFloat :: Int -> Down a -> Down a # isNaN :: Down a -> Bool # isInfinite :: Down a -> Bool # isDenormalized :: Down a -> Bool # isNegativeZero :: Down a -> Bool # isIEEE :: Down a -> Bool # atan2 :: Down a -> Down a -> Down a #
RealFloat a => RealFloat (Const a b)	Since: base-4.9.0.0
Instance details Defined in Data.Functor.Const Methods floatRadix :: Const a b -> Integer # floatDigits :: Const a b -> Int # floatRange :: Const a b -> (Int, Int) # decodeFloat :: Const a b -> (Integer, Int) # encodeFloat :: Integer -> Int -> Const a b # exponent :: Const a b -> Int # significand :: Const a b -> Const a b # scaleFloat :: Int -> Const a b -> Const a b # isNaN :: Const a b -> Bool # isInfinite :: Const a b -> Bool # isDenormalized :: Const a b -> Bool # isNegativeZero :: Const a b -> Bool # isIEEE :: Const a b -> Bool # atan2 :: Const a b -> Const a b -> Const a b #
RealFloat a => RealFloat (Tagged s a)
Instance details Defined in Data.Tagged Methods floatRadix :: Tagged s a -> Integer # floatDigits :: Tagged s a -> Int # floatRange :: Tagged s a -> (Int, Int) # decodeFloat :: Tagged s a -> (Integer, Int) # encodeFloat :: Integer -> Int -> Tagged s a # exponent :: Tagged s a -> Int # significand :: Tagged s a -> Tagged s a # scaleFloat :: Int -> Tagged s a -> Tagged s a # isNaN :: Tagged s a -> Bool # isInfinite :: Tagged s a -> Bool # isDenormalized :: Tagged s a -> Bool # isNegativeZero :: Tagged s a -> Bool # isIEEE :: Tagged s a -> Bool # atan2 :: Tagged s a -> Tagged s a -> Tagged s a #

class (Real a, Fractional a) => RealFrac a where #

Extracting components of fractions.

Minimal complete definition

properFraction

Methods

properFraction :: Integral b => a -> (b, a) #

The function properFraction takes a real fractional number x and returns a pair (n,f) such that x = n+f, and:

n is an integral number with the same sign as x; and
f is a fraction with the same type and sign as x, and with absolute value less than 1.

The default definitions of the ceiling, floor, truncate and round functions are in terms of properFraction.

truncate :: Integral b => a -> b #

truncate x returns the integer nearest x between zero and x

round :: Integral b => a -> b #

round x returns the nearest integer to x; the even integer if x is equidistant between two integers

ceiling :: Integral b => a -> b #

ceiling x returns the least integer not less than x

floor :: Integral b => a -> b #

floor x returns the greatest integer not greater than x

Instances

Instances details

RealFrac Scientific	WARNING: the methods of the `RealFrac` instance need to compute the magnitude `10^e`. If applied to a huge exponent this could take a long time. Even worse, when the destination type is unbounded (i.e. `Integer`) it could fill up all space and crash your program!
Instance details Defined in Data.Scientific Methods properFraction :: Integral b => Scientific -> (b, Scientific) # truncate :: Integral b => Scientific -> b # round :: Integral b => Scientific -> b # ceiling :: Integral b => Scientific -> b # floor :: Integral b => Scientific -> b #
RealFrac CFloat
Instance details Defined in Foreign.C.Types Methods properFraction :: Integral b => CFloat -> (b, CFloat) # truncate :: Integral b => CFloat -> b # round :: Integral b => CFloat -> b # ceiling :: Integral b => CFloat -> b # floor :: Integral b => CFloat -> b #
RealFrac CDouble
Instance details Defined in Foreign.C.Types Methods properFraction :: Integral b => CDouble -> (b, CDouble) # truncate :: Integral b => CDouble -> b # round :: Integral b => CDouble -> b # ceiling :: Integral b => CDouble -> b # floor :: Integral b => CDouble -> b #
RealFrac NominalDiffTime
Instance details Defined in Data.Time.Clock.Internal.NominalDiffTime Methods properFraction :: Integral b => NominalDiffTime -> (b, NominalDiffTime) # truncate :: Integral b => NominalDiffTime -> b # round :: Integral b => NominalDiffTime -> b # ceiling :: Integral b => NominalDiffTime -> b # floor :: Integral b => NominalDiffTime -> b #
RealFrac DiffTime
Instance details Defined in Data.Time.Clock.Internal.DiffTime Methods properFraction :: Integral b => DiffTime -> (b, DiffTime) # truncate :: Integral b => DiffTime -> b # round :: Integral b => DiffTime -> b # ceiling :: Integral b => DiffTime -> b # floor :: Integral b => DiffTime -> b #
Integral a => RealFrac (Ratio a)	Since: base-2.0.1
Instance details Defined in GHC.Real Methods properFraction :: Integral b => Ratio a -> (b, Ratio a) # truncate :: Integral b => Ratio a -> b # round :: Integral b => Ratio a -> b # ceiling :: Integral b => Ratio a -> b # floor :: Integral b => Ratio a -> b #
Integral i => RealFrac (DecimalRaw i)
Instance details Defined in Data.Decimal Methods properFraction :: Integral b => DecimalRaw i -> (b, DecimalRaw i) # truncate :: Integral b => DecimalRaw i -> b # round :: Integral b => DecimalRaw i -> b # ceiling :: Integral b => DecimalRaw i -> b # floor :: Integral b => DecimalRaw i -> b #
RealFrac a => RealFrac (Identity a)	Since: base-4.9.0.0
Instance details Defined in Data.Functor.Identity Methods properFraction :: Integral b => Identity a -> (b, Identity a) # truncate :: Integral b => Identity a -> b # round :: Integral b => Identity a -> b # ceiling :: Integral b => Identity a -> b # floor :: Integral b => Identity a -> b #
RealFrac a => RealFrac (Down a)	Since: base-4.14.0.0
Instance details Defined in Data.Ord Methods properFraction :: Integral b => Down a -> (b, Down a) # truncate :: Integral b => Down a -> b # round :: Integral b => Down a -> b # ceiling :: Integral b => Down a -> b # floor :: Integral b => Down a -> b #
HasResolution a => RealFrac (Fixed a)	Since: base-2.1
Instance details Defined in Data.Fixed Methods properFraction :: Integral b => Fixed a -> (b, Fixed a) # truncate :: Integral b => Fixed a -> b # round :: Integral b => Fixed a -> b # ceiling :: Integral b => Fixed a -> b # floor :: Integral b => Fixed a -> b #
RealFrac a => RealFrac (Const a b)	Since: base-4.9.0.0
Instance details Defined in Data.Functor.Const Methods properFraction :: Integral b0 => Const a b -> (b0, Const a b) # truncate :: Integral b0 => Const a b -> b0 # round :: Integral b0 => Const a b -> b0 # ceiling :: Integral b0 => Const a b -> b0 # floor :: Integral b0 => Const a b -> b0 #
RealFrac a => RealFrac (Tagged s a)
Instance details Defined in Data.Tagged Methods properFraction :: Integral b => Tagged s a -> (b, Tagged s a) # truncate :: Integral b => Tagged s a -> b # round :: Integral b => Tagged s a -> b # ceiling :: Integral b => Tagged s a -> b # floor :: Integral b => Tagged s a -> b #

class Show a where #

Conversion of values to readable Strings.

Derived instances of Show have the following properties, which are compatible with derived instances of Read:

The result of show is a syntactically correct Haskell expression containing only constants, given the fixity declarations in force at the point where the type is declared. It contains only the constructor names defined in the data type, parentheses, and spaces. When labelled constructor fields are used, braces, commas, field names, and equal signs are also used.
If the constructor is defined to be an infix operator, then showsPrec will produce infix applications of the constructor.
the representation will be enclosed in parentheses if the precedence of the top-level constructor in x is less than d (associativity is ignored). Thus, if d is 0 then the result is never surrounded in parentheses; if d is 11 it is always surrounded in parentheses, unless it is an atomic expression.
If the constructor is defined using record syntax, then show will produce the record-syntax form, with the fields given in the same order as the original declaration.

For example, given the declarations

infixr 5 :^:
data Tree a =  Leaf a  |  Tree a :^: Tree a

the derived instance of Show is equivalent to

instance (Show a) => Show (Tree a) where

       showsPrec d (Leaf m) = showParen (d > app_prec) $
            showString "Leaf " . showsPrec (app_prec+1) m
         where app_prec = 10

       showsPrec d (u :^: v) = showParen (d > up_prec) $
            showsPrec (up_prec+1) u .
            showString " :^: "      .
            showsPrec (up_prec+1) v
         where up_prec = 5

Note that right-associativity of :^: is ignored. For example,

show (Leaf 1 :^: Leaf 2 :^: Leaf 3) produces the string "Leaf 1 :^: (Leaf 2 :^: Leaf 3)".

Minimal complete definition

showsPrec | show

Methods

showsPrec #

Arguments

:: Int	the operator precedence of the enclosing context (a number from `0` to `11`). Function application has precedence `10`.
-> a	the value to be converted to a `String`
-> ShowS

Convert a value to a readable String.

showsPrec should satisfy the law

showsPrec d x r ++ s  ==  showsPrec d x (r ++ s)

Derived instances of Read and Show satisfy the following:

(x,"") is an element of (readsPrec d (showsPrec d x "")).

That is, readsPrec parses the string produced by showsPrec, and delivers the value that showsPrec started with.

show :: a -> String #

A specialised variant of showsPrec, using precedence context zero, and returning an ordinary String.

showList :: [a] -> ShowS #

The method showList is provided to allow the programmer to give a specialised way of showing lists of values. For example, this is used by the predefined Show instance of the Char type, where values of type String should be shown in double quotes, rather than between square brackets.

Instances

Instances details

Show Bool	Since: base-2.1
Instance details Defined in GHC.Show Methods showsPrec :: Int -> Bool -> ShowS # show :: Bool -> String # showList :: [Bool] -> ShowS #
Show Char	Since: base-2.1
Instance details Defined in GHC.Show Methods showsPrec :: Int -> Char -> ShowS # show :: Char -> String # showList :: [Char] -> ShowS #
Show Int	Since: base-2.1
Instance details Defined in GHC.Show Methods showsPrec :: Int -> Int -> ShowS # show :: Int -> String # showList :: [Int] -> ShowS #
Show Int8	Since: base-2.1
Instance details Defined in GHC.Int Methods showsPrec :: Int -> Int8 -> ShowS # show :: Int8 -> String # showList :: [Int8] -> ShowS #
Show Int16	Since: base-2.1
Instance details Defined in GHC.Int Methods showsPrec :: Int -> Int16 -> ShowS # show :: Int16 -> String # showList :: [Int16] -> ShowS #
Show Int32	Since: base-2.1
Instance details Defined in GHC.Int Methods showsPrec :: Int -> Int32 -> ShowS # show :: Int32 -> String # showList :: [Int32] -> ShowS #
Show Int64	Since: base-2.1
Instance details Defined in GHC.Int Methods showsPrec :: Int -> Int64 -> ShowS # show :: Int64 -> String # showList :: [Int64] -> ShowS #
Show Integer	Since: base-2.1
Instance details Defined in GHC.Show Methods showsPrec :: Int -> Integer -> ShowS # show :: Integer -> String # showList :: [Integer] -> ShowS #
Show Natural	Since: base-4.8.0.0
Instance details Defined in GHC.Show Methods showsPrec :: Int -> Natural -> ShowS # show :: Natural -> String # showList :: [Natural] -> ShowS #
Show Ordering	Since: base-2.1
Instance details Defined in GHC.Show Methods showsPrec :: Int -> Ordering -> ShowS # show :: Ordering -> String # showList :: [Ordering] -> ShowS #
Show Word	Since: base-2.1
Instance details Defined in GHC.Show Methods showsPrec :: Int -> Word -> ShowS # show :: Word -> String # showList :: [Word] -> ShowS #
Show Word8	Since: base-2.1
Instance details Defined in GHC.Word Methods showsPrec :: Int -> Word8 -> ShowS # show :: Word8 -> String # showList :: [Word8] -> ShowS #
Show Word16	Since: base-2.1
Instance details Defined in GHC.Word Methods showsPrec :: Int -> Word16 -> ShowS # show :: Word16 -> String # showList :: [Word16] -> ShowS #
Show Word32	Since: base-2.1
Instance details Defined in GHC.Word Methods showsPrec :: Int -> Word32 -> ShowS # show :: Word32 -> String # showList :: [Word32] -> ShowS #
Show Word64	Since: base-2.1
Instance details Defined in GHC.Word Methods showsPrec :: Int -> Word64 -> ShowS # show :: Word64 -> String # showList :: [Word64] -> ShowS #
Show RuntimeRep	Since: base-4.11.0.0
Instance details Defined in GHC.Show Methods showsPrec :: Int -> RuntimeRep -> ShowS # show :: RuntimeRep -> String # showList :: [RuntimeRep] -> ShowS #
Show VecCount	Since: base-4.11.0.0
Instance details Defined in GHC.Show Methods showsPrec :: Int -> VecCount -> ShowS # show :: VecCount -> String # showList :: [VecCount] -> ShowS #
Show VecElem	Since: base-4.11.0.0
Instance details Defined in GHC.Show Methods showsPrec :: Int -> VecElem -> ShowS # show :: VecElem -> String # showList :: [VecElem] -> ShowS #
Show CallStack	Since: base-4.9.0.0
Instance details Defined in GHC.Show Methods showsPrec :: Int -> CallStack -> ShowS # show :: CallStack -> String # showList :: [CallStack] -> ShowS #
Show SomeTypeRep	Since: base-4.10.0.0
Instance details Defined in Data.Typeable.Internal Methods showsPrec :: Int -> SomeTypeRep -> ShowS # show :: SomeTypeRep -> String # showList :: [SomeTypeRep] -> ShowS #
Show Exp
Instance details Defined in Language.Haskell.TH.Syntax Methods showsPrec :: Int -> Exp -> ShowS # show :: Exp -> String # showList :: [Exp] -> ShowS #
Show Match
Instance details Defined in Language.Haskell.TH.Syntax Methods showsPrec :: Int -> Match -> ShowS # show :: Match -> String # showList :: [Match] -> ShowS #
Show Clause
Instance details Defined in Language.Haskell.TH.Syntax Methods showsPrec :: Int -> Clause -> ShowS # show :: Clause -> String # showList :: [Clause] -> ShowS #
Show Pat
Instance details Defined in Language.Haskell.TH.Syntax Methods showsPrec :: Int -> Pat -> ShowS # show :: Pat -> String # showList :: [Pat] -> ShowS #
Show Type
Instance details Defined in Language.Haskell.TH.Syntax Methods showsPrec :: Int -> Type -> ShowS # show :: Type -> String # showList :: [Type] -> ShowS #
Show Dec
Instance details Defined in Language.Haskell.TH.Syntax Methods showsPrec :: Int -> Dec -> ShowS # show :: Dec -> String # showList :: [Dec] -> ShowS #
Show Name
Instance details Defined in Language.Haskell.TH.Syntax Methods showsPrec :: Int -> Name -> ShowS # show :: Name -> String # showList :: [Name] -> ShowS #
Show FunDep
Instance details Defined in Language.Haskell.TH.Syntax Methods showsPrec :: Int -> FunDep -> ShowS # show :: FunDep -> String # showList :: [FunDep] -> ShowS #
Show InjectivityAnn
Instance details Defined in Language.Haskell.TH.Syntax Methods showsPrec :: Int -> InjectivityAnn -> ShowS # show :: InjectivityAnn -> String # showList :: [InjectivityAnn] -> ShowS #
Show Overlap
Instance details Defined in Language.Haskell.TH.Syntax Methods showsPrec :: Int -> Overlap -> ShowS # show :: Overlap -> String # showList :: [Overlap] -> ShowS #
Show ()	Since: base-2.1
Instance details Defined in GHC.Show Methods showsPrec :: Int -> () -> ShowS # show :: () -> String # showList :: [()] -> ShowS #
Show TyCon	Since: base-2.1
Instance details Defined in GHC.Show Methods showsPrec :: Int -> TyCon -> ShowS # show :: TyCon -> String # showList :: [TyCon] -> ShowS #
Show Module	Since: base-4.9.0.0
Instance details Defined in GHC.Show Methods showsPrec :: Int -> Module -> ShowS # show :: Module -> String # showList :: [Module] -> ShowS #
Show TrName	Since: base-4.9.0.0
Instance details Defined in GHC.Show Methods showsPrec :: Int -> TrName -> ShowS # show :: TrName -> String # showList :: [TrName] -> ShowS #
Show KindRep
Instance details Defined in GHC.Show Methods showsPrec :: Int -> KindRep -> ShowS # show :: KindRep -> String # showList :: [KindRep] -> ShowS #
Show TypeLitSort	Since: base-4.11.0.0
Instance details Defined in GHC.Show Methods showsPrec :: Int -> TypeLitSort -> ShowS # show :: TypeLitSort -> String # showList :: [TypeLitSort] -> ShowS #
Show Version	Since: base-2.1
Instance details Defined in Data.Version Methods showsPrec :: Int -> Version -> ShowS # show :: Version -> String # showList :: [Version] -> ShowS #
Show StdGen
Instance details Defined in System.Random.Internal Methods showsPrec :: Int -> StdGen -> ShowS # show :: StdGen -> String # showList :: [StdGen] -> ShowS #
Show ByteString
Instance details Defined in Data.ByteString.Internal Methods showsPrec :: Int -> ByteString -> ShowS # show :: ByteString -> String # showList :: [ByteString] -> ShowS #
Show ByteString
Instance details Defined in Data.ByteString.Lazy.Internal Methods showsPrec :: Int -> ByteString -> ShowS # show :: ByteString -> String # showList :: [ByteString] -> ShowS #
Show Builder
Instance details Defined in Data.Text.Internal.Builder Methods showsPrec :: Int -> Builder -> ShowS # show :: Builder -> String # showList :: [Builder] -> ShowS #
Show Scientific	See `formatScientific` if you need more control over the rendering.
Instance details Defined in Data.Scientific Methods showsPrec :: Int -> Scientific -> ShowS # show :: Scientific -> String # showList :: [Scientific] -> ShowS #
Show JSONPathElement
Instance details Defined in Data.Aeson.Types.Internal Methods showsPrec :: Int -> JSONPathElement -> ShowS # show :: JSONPathElement -> String # showList :: [JSONPathElement] -> ShowS #
Show Value	Since version 1.5.6.0 version object values are printed in lexicographic key order `>>>` `toJSON $ H.fromList [("a", True), ("z", False)]`Object (fromList [("a",Bool True),("z",Bool False)]) `>>>` `toJSON $ H.fromList [("z", False), ("a", True)]`Object (fromList [("a",Bool True),("z",Bool False)])
Instance details Defined in Data.Aeson.Types.Internal Methods showsPrec :: Int -> Value -> ShowS # show :: Value -> String # showList :: [Value] -> ShowS #
Show DotNetTime
Instance details Defined in Data.Aeson.Types.Internal Methods showsPrec :: Int -> DotNetTime -> ShowS # show :: DotNetTime -> String # showList :: [DotNetTime] -> ShowS #
Show Options
Instance details Defined in Data.Aeson.Types.Internal Methods showsPrec :: Int -> Options -> ShowS # show :: Options -> String # showList :: [Options] -> ShowS #
Show SumEncoding
Instance details Defined in Data.Aeson.Types.Internal Methods showsPrec :: Int -> SumEncoding -> ShowS # show :: SumEncoding -> String # showList :: [SumEncoding] -> ShowS #
Show Handle	Since: base-4.1.0.0
Instance details Defined in GHC.IO.Handle.Types Methods showsPrec :: Int -> Handle -> ShowS # show :: Handle -> String # showList :: [Handle] -> ShowS #
Show Pos
Instance details Defined in Data.Attoparsec.Internal.Types Methods showsPrec :: Int -> Pos -> ShowS # show :: Pos -> String # showList :: [Pos] -> ShowS #
Show More
Instance details Defined in Data.Attoparsec.Internal.Types Methods showsPrec :: Int -> More -> ShowS # show :: More -> String # showList :: [More] -> ShowS #
Show Void	Since: base-4.8.0.0
Instance details Defined in Data.Void Methods showsPrec :: Int -> Void -> ShowS # show :: Void -> String # showList :: [Void] -> ShowS #
Show HandlePosn	Since: base-4.1.0.0
Instance details Defined in GHC.IO.Handle Methods showsPrec :: Int -> HandlePosn -> ShowS # show :: HandlePosn -> String # showList :: [HandlePosn] -> ShowS #
Show PatternMatchFail	Since: base-4.0
Instance details Defined in Control.Exception.Base Methods showsPrec :: Int -> PatternMatchFail -> ShowS # show :: PatternMatchFail -> String # showList :: [PatternMatchFail] -> ShowS #
Show RecSelError	Since: base-4.0
Instance details Defined in Control.Exception.Base Methods showsPrec :: Int -> RecSelError -> ShowS # show :: RecSelError -> String # showList :: [RecSelError] -> ShowS #
Show RecConError	Since: base-4.0
Instance details Defined in Control.Exception.Base Methods showsPrec :: Int -> RecConError -> ShowS # show :: RecConError -> String # showList :: [RecConError] -> ShowS #
Show RecUpdError	Since: base-4.0
Instance details Defined in Control.Exception.Base Methods showsPrec :: Int -> RecUpdError -> ShowS # show :: RecUpdError -> String # showList :: [RecUpdError] -> ShowS #
Show NoMethodError	Since: base-4.0
Instance details Defined in Control.Exception.Base Methods showsPrec :: Int -> NoMethodError -> ShowS # show :: NoMethodError -> String # showList :: [NoMethodError] -> ShowS #
Show TypeError	Since: base-4.9.0.0
Instance details Defined in Control.Exception.Base Methods showsPrec :: Int -> TypeError -> ShowS # show :: TypeError -> String # showList :: [TypeError] -> ShowS #
Show NonTermination	Since: base-4.0
Instance details Defined in Control.Exception.Base Methods showsPrec :: Int -> NonTermination -> ShowS # show :: NonTermination -> String # showList :: [NonTermination] -> ShowS #
Show NestedAtomically	Since: base-4.0
Instance details Defined in Control.Exception.Base Methods showsPrec :: Int -> NestedAtomically -> ShowS # show :: NestedAtomically -> String # showList :: [NestedAtomically] -> ShowS #
Show BlockedIndefinitelyOnMVar	Since: base-4.1.0.0
Instance details Defined in GHC.IO.Exception Methods showsPrec :: Int -> BlockedIndefinitelyOnMVar -> ShowS # show :: BlockedIndefinitelyOnMVar -> String # showList :: [BlockedIndefinitelyOnMVar] -> ShowS #
Show BlockedIndefinitelyOnSTM	Since: base-4.1.0.0
Instance details Defined in GHC.IO.Exception Methods showsPrec :: Int -> BlockedIndefinitelyOnSTM -> ShowS # show :: BlockedIndefinitelyOnSTM -> String # showList :: [BlockedIndefinitelyOnSTM] -> ShowS #
Show Deadlock	Since: base-4.1.0.0
Instance details Defined in GHC.IO.Exception Methods showsPrec :: Int -> Deadlock -> ShowS # show :: Deadlock -> String # showList :: [Deadlock] -> ShowS #
Show AllocationLimitExceeded	Since: base-4.7.1.0
Instance details Defined in GHC.IO.Exception Methods showsPrec :: Int -> AllocationLimitExceeded -> ShowS # show :: AllocationLimitExceeded -> String # showList :: [AllocationLimitExceeded] -> ShowS #
Show CompactionFailed	Since: base-4.10.0.0
Instance details Defined in GHC.IO.Exception Methods showsPrec :: Int -> CompactionFailed -> ShowS # show :: CompactionFailed -> String # showList :: [CompactionFailed] -> ShowS #
Show AssertionFailed	Since: base-4.1.0.0
Instance details Defined in GHC.IO.Exception Methods showsPrec :: Int -> AssertionFailed -> ShowS # show :: AssertionFailed -> String # showList :: [AssertionFailed] -> ShowS #
Show SomeAsyncException	Since: base-4.7.0.0
Instance details Defined in GHC.IO.Exception Methods showsPrec :: Int -> SomeAsyncException -> ShowS # show :: SomeAsyncException -> String # showList :: [SomeAsyncException] -> ShowS #
Show AsyncException	Since: base-4.1.0.0
Instance details Defined in GHC.IO.Exception Methods showsPrec :: Int -> AsyncException -> ShowS # show :: AsyncException -> String # showList :: [AsyncException] -> ShowS #
Show ArrayException	Since: base-4.1.0.0
Instance details Defined in GHC.IO.Exception Methods showsPrec :: Int -> ArrayException -> ShowS # show :: ArrayException -> String # showList :: [ArrayException] -> ShowS #
Show FixIOException	Since: base-4.11.0.0
Instance details Defined in GHC.IO.Exception Methods showsPrec :: Int -> FixIOException -> ShowS # show :: FixIOException -> String # showList :: [FixIOException] -> ShowS #
Show ExitCode
Instance details Defined in GHC.IO.Exception Methods showsPrec :: Int -> ExitCode -> ShowS # show :: ExitCode -> String # showList :: [ExitCode] -> ShowS #
Show IOErrorType	Since: base-4.1.0.0
Instance details Defined in GHC.IO.Exception Methods showsPrec :: Int -> IOErrorType -> ShowS # show :: IOErrorType -> String # showList :: [IOErrorType] -> ShowS #
Show HandleType	Since: base-4.1.0.0
Instance details Defined in GHC.IO.Handle.Types Methods showsPrec :: Int -> HandleType -> ShowS # show :: HandleType -> String # showList :: [HandleType] -> ShowS #
Show BufferMode	Since: base-4.2.0.0
Instance details Defined in GHC.IO.Handle.Types Methods showsPrec :: Int -> BufferMode -> ShowS # show :: BufferMode -> String # showList :: [BufferMode] -> ShowS #
Show Newline	Since: base-4.3.0.0
Instance details Defined in GHC.IO.Handle.Types Methods showsPrec :: Int -> Newline -> ShowS # show :: Newline -> String # showList :: [Newline] -> ShowS #
Show NewlineMode	Since: base-4.3.0.0
Instance details Defined in GHC.IO.Handle.Types Methods showsPrec :: Int -> NewlineMode -> ShowS # show :: NewlineMode -> String # showList :: [NewlineMode] -> ShowS #
Show MaskingState	Since: base-4.3.0.0
Instance details Defined in GHC.IO Methods showsPrec :: Int -> MaskingState -> ShowS # show :: MaskingState -> String # showList :: [MaskingState] -> ShowS #
Show IOException	Since: base-4.1.0.0
Instance details Defined in GHC.IO.Exception Methods showsPrec :: Int -> IOException -> ShowS # show :: IOException -> String # showList :: [IOException] -> ShowS #
Show ArithException	Since: base-4.0.0.0
Instance details Defined in GHC.Exception.Type Methods showsPrec :: Int -> ArithException -> ShowS # show :: ArithException -> String # showList :: [ArithException] -> ShowS #
Show All	Since: base-2.1
Instance details Defined in Data.Semigroup.Internal Methods showsPrec :: Int -> All -> ShowS # show :: All -> String # showList :: [All] -> ShowS #
Show Any	Since: base-2.1
Instance details Defined in Data.Semigroup.Internal Methods showsPrec :: Int -> Any -> ShowS # show :: Any -> String # showList :: [Any] -> ShowS #
Show Fixity	Since: base-4.6.0.0
Instance details Defined in GHC.Generics Methods showsPrec :: Int -> Fixity -> ShowS # show :: Fixity -> String # showList :: [Fixity] -> ShowS #
Show Associativity	Since: base-4.6.0.0
Instance details Defined in GHC.Generics Methods showsPrec :: Int -> Associativity -> ShowS # show :: Associativity -> String # showList :: [Associativity] -> ShowS #
Show SourceUnpackedness	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Methods showsPrec :: Int -> SourceUnpackedness -> ShowS # show :: SourceUnpackedness -> String # showList :: [SourceUnpackedness] -> ShowS #
Show SourceStrictness	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Methods showsPrec :: Int -> SourceStrictness -> ShowS # show :: SourceStrictness -> String # showList :: [SourceStrictness] -> ShowS #
Show DecidedStrictness	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Methods showsPrec :: Int -> DecidedStrictness -> ShowS # show :: DecidedStrictness -> String # showList :: [DecidedStrictness] -> ShowS #
Show SomeSymbol	Since: base-4.7.0.0
Instance details Defined in GHC.TypeLits Methods showsPrec :: Int -> SomeSymbol -> ShowS # show :: SomeSymbol -> String # showList :: [SomeSymbol] -> ShowS #
Show SomeNat	Since: base-4.7.0.0
Instance details Defined in GHC.TypeNats Methods showsPrec :: Int -> SomeNat -> ShowS # show :: SomeNat -> String # showList :: [SomeNat] -> ShowS #
Show CChar
Instance details Defined in Foreign.C.Types Methods showsPrec :: Int -> CChar -> ShowS # show :: CChar -> String # showList :: [CChar] -> ShowS #
Show CSChar
Instance details Defined in Foreign.C.Types Methods showsPrec :: Int -> CSChar -> ShowS # show :: CSChar -> String # showList :: [CSChar] -> ShowS #
Show CUChar
Instance details Defined in Foreign.C.Types Methods showsPrec :: Int -> CUChar -> ShowS # show :: CUChar -> String # showList :: [CUChar] -> ShowS #
Show CShort
Instance details Defined in Foreign.C.Types Methods showsPrec :: Int -> CShort -> ShowS # show :: CShort -> String # showList :: [CShort] -> ShowS #
Show CUShort
Instance details Defined in Foreign.C.Types Methods showsPrec :: Int -> CUShort -> ShowS # show :: CUShort -> String # showList :: [CUShort] -> ShowS #
Show CInt
Instance details Defined in Foreign.C.Types Methods showsPrec :: Int -> CInt -> ShowS # show :: CInt -> String # showList :: [CInt] -> ShowS #
Show CUInt
Instance details Defined in Foreign.C.Types Methods showsPrec :: Int -> CUInt -> ShowS # show :: CUInt -> String # showList :: [CUInt] -> ShowS #
Show CLong
Instance details Defined in Foreign.C.Types Methods showsPrec :: Int -> CLong -> ShowS # show :: CLong -> String # showList :: [CLong] -> ShowS #
Show CULong
Instance details Defined in Foreign.C.Types Methods showsPrec :: Int -> CULong -> ShowS # show :: CULong -> String # showList :: [CULong] -> ShowS #
Show CLLong
Instance details Defined in Foreign.C.Types Methods showsPrec :: Int -> CLLong -> ShowS # show :: CLLong -> String # showList :: [CLLong] -> ShowS #
Show CULLong
Instance details Defined in Foreign.C.Types Methods showsPrec :: Int -> CULLong -> ShowS # show :: CULLong -> String # showList :: [CULLong] -> ShowS #
Show CBool
Instance details Defined in Foreign.C.Types Methods showsPrec :: Int -> CBool -> ShowS # show :: CBool -> String # showList :: [CBool] -> ShowS #
Show CFloat
Instance details Defined in Foreign.C.Types Methods showsPrec :: Int -> CFloat -> ShowS # show :: CFloat -> String # showList :: [CFloat] -> ShowS #
Show CDouble
Instance details Defined in Foreign.C.Types Methods showsPrec :: Int -> CDouble -> ShowS # show :: CDouble -> String # showList :: [CDouble] -> ShowS #
Show CPtrdiff
Instance details Defined in Foreign.C.Types Methods showsPrec :: Int -> CPtrdiff -> ShowS # show :: CPtrdiff -> String # showList :: [CPtrdiff] -> ShowS #
Show CSize
Instance details Defined in Foreign.C.Types Methods showsPrec :: Int -> CSize -> ShowS # show :: CSize -> String # showList :: [CSize] -> ShowS #
Show CWchar
Instance details Defined in Foreign.C.Types Methods showsPrec :: Int -> CWchar -> ShowS # show :: CWchar -> String # showList :: [CWchar] -> ShowS #
Show CSigAtomic
Instance details Defined in Foreign.C.Types Methods showsPrec :: Int -> CSigAtomic -> ShowS # show :: CSigAtomic -> String # showList :: [CSigAtomic] -> ShowS #
Show CClock
Instance details Defined in Foreign.C.Types Methods showsPrec :: Int -> CClock -> ShowS # show :: CClock -> String # showList :: [CClock] -> ShowS #
Show CTime
Instance details Defined in Foreign.C.Types Methods showsPrec :: Int -> CTime -> ShowS # show :: CTime -> String # showList :: [CTime] -> ShowS #
Show CUSeconds
Instance details Defined in Foreign.C.Types Methods showsPrec :: Int -> CUSeconds -> ShowS # show :: CUSeconds -> String # showList :: [CUSeconds] -> ShowS #
Show CSUSeconds
Instance details Defined in Foreign.C.Types Methods showsPrec :: Int -> CSUSeconds -> ShowS # show :: CSUSeconds -> String # showList :: [CSUSeconds] -> ShowS #
Show CIntPtr
Instance details Defined in Foreign.C.Types Methods showsPrec :: Int -> CIntPtr -> ShowS # show :: CIntPtr -> String # showList :: [CIntPtr] -> ShowS #
Show CUIntPtr
Instance details Defined in Foreign.C.Types Methods showsPrec :: Int -> CUIntPtr -> ShowS # show :: CUIntPtr -> String # showList :: [CUIntPtr] -> ShowS #
Show CIntMax
Instance details Defined in Foreign.C.Types Methods showsPrec :: Int -> CIntMax -> ShowS # show :: CIntMax -> String # showList :: [CIntMax] -> ShowS #
Show CUIntMax
Instance details Defined in Foreign.C.Types Methods showsPrec :: Int -> CUIntMax -> ShowS # show :: CUIntMax -> String # showList :: [CUIntMax] -> ShowS #
Show Lexeme	Since: base-2.1
Instance details Defined in Text.Read.Lex Methods showsPrec :: Int -> Lexeme -> ShowS # show :: Lexeme -> String # showList :: [Lexeme] -> ShowS #
Show Number	Since: base-4.6.0.0
Instance details Defined in Text.Read.Lex Methods showsPrec :: Int -> Number -> ShowS # show :: Number -> String # showList :: [Number] -> ShowS #
Show SrcLoc	Since: base-4.9.0.0
Instance details Defined in GHC.Show Methods showsPrec :: Int -> SrcLoc -> ShowS # show :: SrcLoc -> String # showList :: [SrcLoc] -> ShowS #
Show SomeException	Since: base-3.0
Instance details Defined in GHC.Exception.Type Methods showsPrec :: Int -> SomeException -> ShowS # show :: SomeException -> String # showList :: [SomeException] -> ShowS #
Show ShortText
Instance details Defined in Data.Text.Short.Internal Methods showsPrec :: Int -> ShortText -> ShowS # show :: ShortText -> String # showList :: [ShortText] -> ShowS #
Show ASCII7_Invalid
Instance details Defined in Basement.String.Encoding.ASCII7 Methods showsPrec :: Int -> ASCII7_Invalid -> ShowS # show :: ASCII7_Invalid -> String # showList :: [ASCII7_Invalid] -> ShowS #
Show ISO_8859_1_Invalid
Instance details Defined in Basement.String.Encoding.ISO_8859_1 Methods showsPrec :: Int -> ISO_8859_1_Invalid -> ShowS # show :: ISO_8859_1_Invalid -> String # showList :: [ISO_8859_1_Invalid] -> ShowS #
Show UTF16_Invalid
Instance details Defined in Basement.String.Encoding.UTF16 Methods showsPrec :: Int -> UTF16_Invalid -> ShowS # show :: UTF16_Invalid -> String # showList :: [UTF16_Invalid] -> ShowS #
Show UTF32_Invalid
Instance details Defined in Basement.String.Encoding.UTF32 Methods showsPrec :: Int -> UTF32_Invalid -> ShowS # show :: UTF32_Invalid -> String # showList :: [UTF32_Invalid] -> ShowS #
Show Encoding
Instance details Defined in Basement.String Methods showsPrec :: Int -> Encoding -> ShowS # show :: Encoding -> String # showList :: [Encoding] -> ShowS #
Show String
Instance details Defined in Basement.UTF8.Base Methods showsPrec :: Int -> String -> ShowS # show :: String -> String0 # showList :: [String] -> ShowS #
Show FileSize
Instance details Defined in Basement.Types.OffsetSize Methods showsPrec :: Int -> FileSize -> ShowS # show :: FileSize -> String # showList :: [FileSize] -> ShowS #
Show Markup Source #
Instance details Defined in Hledger.Web.Foundation Methods showsPrec :: Int -> Markup -> ShowS # show :: Markup -> String # showList :: [Markup] -> ShowS #
Show Key	Dummy `Show` instance.
Instance details Defined in Web.ClientSession Methods showsPrec :: Int -> Key -> ShowS # show :: Key -> String # showList :: [Key] -> ShowS #
Show IV
Instance details Defined in Web.ClientSession Methods showsPrec :: Int -> IV -> ShowS # show :: IV -> String # showList :: [IV] -> ShowS #
Show Clock
Instance details Defined in System.Clock Methods showsPrec :: Int -> Clock -> ShowS # show :: Clock -> String # showList :: [Clock] -> ShowS #
Show TimeSpec
Instance details Defined in System.Clock Methods showsPrec :: Int -> TimeSpec -> ShowS # show :: TimeSpec -> String # showList :: [TimeSpec] -> ShowS #
Show HelpFormat
Instance details Defined in System.Console.CmdArgs.Explicit.Help Methods showsPrec :: Int -> HelpFormat -> ShowS # show :: HelpFormat -> String # showList :: [HelpFormat] -> ShowS #
Show Complete
Instance details Defined in System.Console.CmdArgs.Explicit.Complete Methods showsPrec :: Int -> Complete -> ShowS # show :: Complete -> String # showList :: [Complete] -> ShowS #
Show FlagInfo
Instance details Defined in System.Console.CmdArgs.Explicit.Type Methods showsPrec :: Int -> FlagInfo -> ShowS # show :: FlagInfo -> String # showList :: [FlagInfo] -> ShowS #
Show WindowBits
Instance details Defined in Codec.Compression.Zlib.Stream Methods showsPrec :: Int -> WindowBits -> ShowS # show :: WindowBits -> String # showList :: [WindowBits] -> ShowS #
Show HostPreference
Instance details Defined in Data.Streaming.Network.Internal Methods showsPrec :: Int -> HostPreference -> ShowS # show :: HostPreference -> String # showList :: [HostPreference] -> ShowS #
Show IntSet
Instance details Defined in Data.IntSet.Internal Methods showsPrec :: Int -> IntSet -> ShowS # show :: IntSet -> String # showList :: [IntSet] -> ShowS #
Show SetCookie
Instance details Defined in Web.Cookie Methods showsPrec :: Int -> SetCookie -> ShowS # show :: SetCookie -> String # showList :: [SetCookie] -> ShowS #
Show SameSiteOption
Instance details Defined in Web.Cookie Methods showsPrec :: Int -> SameSiteOption -> ShowS # show :: SameSiteOption -> String # showList :: [SameSiteOption] -> ShowS #
Show Curve_P256R1
Instance details Defined in Crypto.ECC Methods showsPrec :: Int -> Curve_P256R1 -> ShowS # show :: Curve_P256R1 -> String # showList :: [Curve_P256R1] -> ShowS #
Show Curve_P384R1
Instance details Defined in Crypto.ECC Methods showsPrec :: Int -> Curve_P384R1 -> ShowS # show :: Curve_P384R1 -> String # showList :: [Curve_P384R1] -> ShowS #
Show Curve_P521R1
Instance details Defined in Crypto.ECC Methods showsPrec :: Int -> Curve_P521R1 -> ShowS # show :: Curve_P521R1 -> String # showList :: [Curve_P521R1] -> ShowS #
Show Curve_X25519
Instance details Defined in Crypto.ECC Methods showsPrec :: Int -> Curve_X25519 -> ShowS # show :: Curve_X25519 -> String # showList :: [Curve_X25519] -> ShowS #
Show Curve_X448
Instance details Defined in Crypto.ECC Methods showsPrec :: Int -> Curve_X448 -> ShowS # show :: Curve_X448 -> String # showList :: [Curve_X448] -> ShowS #
Show Curve_Edwards25519
Instance details Defined in Crypto.ECC Methods showsPrec :: Int -> Curve_Edwards25519 -> ShowS # show :: Curve_Edwards25519 -> String # showList :: [Curve_Edwards25519] -> ShowS #
Show Blake2b_160
Instance details Defined in Crypto.Hash.Blake2b Methods showsPrec :: Int -> Blake2b_160 -> ShowS # show :: Blake2b_160 -> String # showList :: [Blake2b_160] -> ShowS #
Show Blake2b_224
Instance details Defined in Crypto.Hash.Blake2b Methods showsPrec :: Int -> Blake2b_224 -> ShowS # show :: Blake2b_224 -> String # showList :: [Blake2b_224] -> ShowS #
Show Blake2b_256
Instance details Defined in Crypto.Hash.Blake2b Methods showsPrec :: Int -> Blake2b_256 -> ShowS # show :: Blake2b_256 -> String # showList :: [Blake2b_256] -> ShowS #
Show Blake2b_384
Instance details Defined in Crypto.Hash.Blake2b Methods showsPrec :: Int -> Blake2b_384 -> ShowS # show :: Blake2b_384 -> String # showList :: [Blake2b_384] -> ShowS #
Show Blake2b_512
Instance details Defined in Crypto.Hash.Blake2b Methods showsPrec :: Int -> Blake2b_512 -> ShowS # show :: Blake2b_512 -> String # showList :: [Blake2b_512] -> ShowS #
Show Blake2bp_512
Instance details Defined in Crypto.Hash.Blake2bp Methods showsPrec :: Int -> Blake2bp_512 -> ShowS # show :: Blake2bp_512 -> String # showList :: [Blake2bp_512] -> ShowS #
Show Blake2s_160
Instance details Defined in Crypto.Hash.Blake2s Methods showsPrec :: Int -> Blake2s_160 -> ShowS # show :: Blake2s_160 -> String # showList :: [Blake2s_160] -> ShowS #
Show Blake2s_224
Instance details Defined in Crypto.Hash.Blake2s Methods showsPrec :: Int -> Blake2s_224 -> ShowS # show :: Blake2s_224 -> String # showList :: [Blake2s_224] -> ShowS #
Show Blake2s_256
Instance details Defined in Crypto.Hash.Blake2s Methods showsPrec :: Int -> Blake2s_256 -> ShowS # show :: Blake2s_256 -> String # showList :: [Blake2s_256] -> ShowS #
Show Blake2sp_224
Instance details Defined in Crypto.Hash.Blake2sp Methods showsPrec :: Int -> Blake2sp_224 -> ShowS # show :: Blake2sp_224 -> String # showList :: [Blake2sp_224] -> ShowS #
Show Blake2sp_256
Instance details Defined in Crypto.Hash.Blake2sp Methods showsPrec :: Int -> Blake2sp_256 -> ShowS # show :: Blake2sp_256 -> String # showList :: [Blake2sp_256] -> ShowS #
Show Keccak_224
Instance details Defined in Crypto.Hash.Keccak Methods showsPrec :: Int -> Keccak_224 -> ShowS # show :: Keccak_224 -> String # showList :: [Keccak_224] -> ShowS #
Show Keccak_256
Instance details Defined in Crypto.Hash.Keccak Methods showsPrec :: Int -> Keccak_256 -> ShowS # show :: Keccak_256 -> String # showList :: [Keccak_256] -> ShowS #
Show Keccak_384
Instance details Defined in Crypto.Hash.Keccak Methods showsPrec :: Int -> Keccak_384 -> ShowS # show :: Keccak_384 -> String # showList :: [Keccak_384] -> ShowS #
Show Keccak_512
Instance details Defined in Crypto.Hash.Keccak Methods showsPrec :: Int -> Keccak_512 -> ShowS # show :: Keccak_512 -> String # showList :: [Keccak_512] -> ShowS #
Show MD2
Instance details Defined in Crypto.Hash.MD2 Methods showsPrec :: Int -> MD2 -> ShowS # show :: MD2 -> String # showList :: [MD2] -> ShowS #
Show MD4
Instance details Defined in Crypto.Hash.MD4 Methods showsPrec :: Int -> MD4 -> ShowS # show :: MD4 -> String # showList :: [MD4] -> ShowS #
Show MD5
Instance details Defined in Crypto.Hash.MD5 Methods showsPrec :: Int -> MD5 -> ShowS # show :: MD5 -> String # showList :: [MD5] -> ShowS #
Show RIPEMD160
Instance details Defined in Crypto.Hash.RIPEMD160 Methods showsPrec :: Int -> RIPEMD160 -> ShowS # show :: RIPEMD160 -> String # showList :: [RIPEMD160] -> ShowS #
Show SHA1
Instance details Defined in Crypto.Hash.SHA1 Methods showsPrec :: Int -> SHA1 -> ShowS # show :: SHA1 -> String # showList :: [SHA1] -> ShowS #
Show SHA224
Instance details Defined in Crypto.Hash.SHA224 Methods showsPrec :: Int -> SHA224 -> ShowS # show :: SHA224 -> String # showList :: [SHA224] -> ShowS #
Show SHA256
Instance details Defined in Crypto.Hash.SHA256 Methods showsPrec :: Int -> SHA256 -> ShowS # show :: SHA256 -> String # showList :: [SHA256] -> ShowS #
Show SHA3_224
Instance details Defined in Crypto.Hash.SHA3 Methods showsPrec :: Int -> SHA3_224 -> ShowS # show :: SHA3_224 -> String # showList :: [SHA3_224] -> ShowS #
Show SHA3_256
Instance details Defined in Crypto.Hash.SHA3 Methods showsPrec :: Int -> SHA3_256 -> ShowS # show :: SHA3_256 -> String # showList :: [SHA3_256] -> ShowS #
Show SHA3_384
Instance details Defined in Crypto.Hash.SHA3 Methods showsPrec :: Int -> SHA3_384 -> ShowS # show :: SHA3_384 -> String # showList :: [SHA3_384] -> ShowS #
Show SHA3_512
Instance details Defined in Crypto.Hash.SHA3 Methods showsPrec :: Int -> SHA3_512 -> ShowS # show :: SHA3_512 -> String # showList :: [SHA3_512] -> ShowS #
Show SHA384
Instance details Defined in Crypto.Hash.SHA384 Methods showsPrec :: Int -> SHA384 -> ShowS # show :: SHA384 -> String # showList :: [SHA384] -> ShowS #
Show SHA512
Instance details Defined in Crypto.Hash.SHA512 Methods showsPrec :: Int -> SHA512 -> ShowS # show :: SHA512 -> String # showList :: [SHA512] -> ShowS #
Show SHA512t_224
Instance details Defined in Crypto.Hash.SHA512t Methods showsPrec :: Int -> SHA512t_224 -> ShowS # show :: SHA512t_224 -> String # showList :: [SHA512t_224] -> ShowS #
Show SHA512t_256
Instance details Defined in Crypto.Hash.SHA512t Methods showsPrec :: Int -> SHA512t_256 -> ShowS # show :: SHA512t_256 -> String # showList :: [SHA512t_256] -> ShowS #
Show Skein256_224
Instance details Defined in Crypto.Hash.Skein256 Methods showsPrec :: Int -> Skein256_224 -> ShowS # show :: Skein256_224 -> String # showList :: [Skein256_224] -> ShowS #
Show Skein256_256
Instance details Defined in Crypto.Hash.Skein256 Methods showsPrec :: Int -> Skein256_256 -> ShowS # show :: Skein256_256 -> String # showList :: [Skein256_256] -> ShowS #
Show Skein512_224
Instance details Defined in Crypto.Hash.Skein512 Methods showsPrec :: Int -> Skein512_224 -> ShowS # show :: Skein512_224 -> String # showList :: [Skein512_224] -> ShowS #
Show Skein512_256
Instance details Defined in Crypto.Hash.Skein512 Methods showsPrec :: Int -> Skein512_256 -> ShowS # show :: Skein512_256 -> String # showList :: [Skein512_256] -> ShowS #
Show Skein512_384
Instance details Defined in Crypto.Hash.Skein512 Methods showsPrec :: Int -> Skein512_384 -> ShowS # show :: Skein512_384 -> String # showList :: [Skein512_384] -> ShowS #
Show Skein512_512
Instance details Defined in Crypto.Hash.Skein512 Methods showsPrec :: Int -> Skein512_512 -> ShowS # show :: Skein512_512 -> String # showList :: [Skein512_512] -> ShowS #
Show Tiger
Instance details Defined in Crypto.Hash.Tiger Methods showsPrec :: Int -> Tiger -> ShowS # show :: Tiger -> String # showList :: [Tiger] -> ShowS #
Show Whirlpool
Instance details Defined in Crypto.Hash.Whirlpool Methods showsPrec :: Int -> Whirlpool -> ShowS # show :: Whirlpool -> String # showList :: [Whirlpool] -> ShowS #
Show CryptoError
Instance details Defined in Crypto.Error.Types Methods showsPrec :: Int -> CryptoError -> ShowS # show :: CryptoError -> String # showList :: [CryptoError] -> ShowS #
Show FileType
Instance details Defined in System.Directory.Internal.Common Methods showsPrec :: Int -> FileType -> ShowS # show :: FileType -> String # showList :: [FileType] -> ShowS #
Show Permissions
Instance details Defined in System.Directory.Internal.Common Methods showsPrec :: Int -> Permissions -> ShowS # show :: Permissions -> String # showList :: [Permissions] -> ShowS #
Show XdgDirectory
Instance details Defined in System.Directory.Internal.Common Methods showsPrec :: Int -> XdgDirectory -> ShowS # show :: XdgDirectory -> String # showList :: [XdgDirectory] -> ShowS #
Show XdgDirectoryList
Instance details Defined in System.Directory.Internal.Common Methods showsPrec :: Int -> XdgDirectoryList -> ShowS # show :: XdgDirectoryList -> String # showList :: [XdgDirectoryList] -> ShowS #
Show EmailAddress
Instance details Defined in Text.Email.Parser Methods showsPrec :: Int -> EmailAddress -> ShowS # show :: EmailAddress -> String # showList :: [EmailAddress] -> ShowS #
Show LogStr
Instance details Defined in System.Log.FastLogger.LogStr Methods showsPrec :: Int -> LogStr -> ShowS # show :: LogStr -> String # showList :: [LogStr] -> ShowS #
Show Extension
Instance details Defined in GHC.LanguageExtensions.Type Methods showsPrec :: Int -> Extension -> ShowS # show :: Extension -> String # showList :: [Extension] -> ShowS #
Show ForeignSrcLang
Instance details Defined in GHC.ForeignSrcLang.Type Methods showsPrec :: Int -> ForeignSrcLang -> ShowS # show :: ForeignSrcLang -> String # showList :: [ForeignSrcLang] -> ShowS #
Show SourcePos
Instance details Defined in Text.Megaparsec.Pos Methods showsPrec :: Int -> SourcePos -> ShowS # show :: SourcePos -> String # showList :: [SourcePos] -> ShowS #
Show DependencyType
Instance details Defined in Test.Tasty.Core Methods showsPrec :: Int -> DependencyType -> ShowS # show :: DependencyType -> String # showList :: [DependencyType] -> ShowS #
Show Timeout
Instance details Defined in Test.Tasty.Options.Core Methods showsPrec :: Int -> Timeout -> ShowS # show :: Timeout -> String # showList :: [Timeout] -> ShowS #
Show Regexp
Instance details Defined in Hledger.Utils.Regex Methods showsPrec :: Int -> Regexp -> ShowS # show :: Regexp -> String # showList :: [Regexp] -> ShowS #
Show NormalSign
Instance details Defined in Hledger.Data.Types Methods showsPrec :: Int -> NormalSign -> ShowS # show :: NormalSign -> String # showList :: [NormalSign] -> ShowS #
Show AccountDeclarationInfo
Instance details Defined in Hledger.Data.Types Methods showsPrec :: Int -> AccountDeclarationInfo -> ShowS # show :: AccountDeclarationInfo -> String # showList :: [AccountDeclarationInfo] -> ShowS #
Show PayeeDeclarationInfo
Instance details Defined in Hledger.Data.Types Methods showsPrec :: Int -> PayeeDeclarationInfo -> ShowS # show :: PayeeDeclarationInfo -> String # showList :: [PayeeDeclarationInfo] -> ShowS #
Show MarketPrice
Instance details Defined in Hledger.Data.Types Methods showsPrec :: Int -> MarketPrice -> ShowS # show :: MarketPrice -> String # showList :: [MarketPrice] -> ShowS #
Show PriceDirective
Instance details Defined in Hledger.Data.Types Methods showsPrec :: Int -> PriceDirective -> ShowS # show :: PriceDirective -> String # showList :: [PriceDirective] -> ShowS #
Show TMPostingRule
Instance details Defined in Hledger.Data.Types Methods showsPrec :: Int -> TMPostingRule -> ShowS # show :: TMPostingRule -> String # showList :: [TMPostingRule] -> ShowS #
Show TransactionModifier
Instance details Defined in Hledger.Data.Types Methods showsPrec :: Int -> TransactionModifier -> ShowS # show :: TransactionModifier -> String # showList :: [TransactionModifier] -> ShowS #
Show Transaction
Instance details Defined in Hledger.Data.Types Methods showsPrec :: Int -> Transaction -> ShowS # show :: Transaction -> String # showList :: [Transaction] -> ShowS #
Show Posting	Posting's show instance elides the parent transaction so as not to recurse forever.
Instance details Defined in Hledger.Data.Types Methods showsPrec :: Int -> Posting -> ShowS # show :: Posting -> String # showList :: [Posting] -> ShowS #
Show BalanceAssertion
Instance details Defined in Hledger.Data.Types Methods showsPrec :: Int -> BalanceAssertion -> ShowS # show :: BalanceAssertion -> String # showList :: [BalanceAssertion] -> ShowS #
Show Status
Instance details Defined in Hledger.Data.Types Methods showsPrec :: Int -> Status -> ShowS # show :: Status -> String # showList :: [Status] -> ShowS #
Show PostingType
Instance details Defined in Hledger.Data.Types Methods showsPrec :: Int -> PostingType -> ShowS # show :: PostingType -> String # showList :: [PostingType] -> ShowS #
Show MixedAmount
Instance details Defined in Hledger.Data.Types Methods showsPrec :: Int -> MixedAmount -> ShowS # show :: MixedAmount -> String # showList :: [MixedAmount] -> ShowS #
Show Amount
Instance details Defined in Hledger.Data.Types Methods showsPrec :: Int -> Amount -> ShowS # show :: Amount -> String # showList :: [Amount] -> ShowS #
Show Commodity
Instance details Defined in Hledger.Data.Types Methods showsPrec :: Int -> Commodity -> ShowS # show :: Commodity -> String # showList :: [Commodity] -> ShowS #
Show DigitGroupStyle
Instance details Defined in Hledger.Data.Types Methods showsPrec :: Int -> DigitGroupStyle -> ShowS # show :: DigitGroupStyle -> String # showList :: [DigitGroupStyle] -> ShowS #
Show AmountPrecision
Instance details Defined in Hledger.Data.Types Methods showsPrec :: Int -> AmountPrecision -> ShowS # show :: AmountPrecision -> String # showList :: [AmountPrecision] -> ShowS #
Show AmountStyle
Instance details Defined in Hledger.Data.Types Methods showsPrec :: Int -> AmountStyle -> ShowS # show :: AmountStyle -> String # showList :: [AmountStyle] -> ShowS #
Show AmountPrice
Instance details Defined in Hledger.Data.Types Methods showsPrec :: Int -> AmountPrice -> ShowS # show :: AmountPrice -> String # showList :: [AmountPrice] -> ShowS #
Show Side
Instance details Defined in Hledger.Data.Types Methods showsPrec :: Int -> Side -> ShowS # show :: Side -> String # showList :: [Side] -> ShowS #
Show AccountAlias
Instance details Defined in Hledger.Data.Types Methods showsPrec :: Int -> AccountAlias -> ShowS # show :: AccountAlias -> String # showList :: [AccountAlias] -> ShowS #
Show AccountType
Instance details Defined in Hledger.Data.Types Methods showsPrec :: Int -> AccountType -> ShowS # show :: AccountType -> String # showList :: [AccountType] -> ShowS #
Show Interval
Instance details Defined in Hledger.Data.Types Methods showsPrec :: Int -> Interval -> ShowS # show :: Interval -> String # showList :: [Interval] -> ShowS #
Show Period
Instance details Defined in Hledger.Data.Types Methods showsPrec :: Int -> Period -> ShowS # show :: Period -> String # showList :: [Period] -> ShowS #
Show WhichDate
Instance details Defined in Hledger.Data.Types Methods showsPrec :: Int -> WhichDate -> ShowS # show :: WhichDate -> String # showList :: [WhichDate] -> ShowS #
Show SmartInterval
Instance details Defined in Hledger.Data.Types Methods showsPrec :: Int -> SmartInterval -> ShowS # show :: SmartInterval -> String # showList :: [SmartInterval] -> ShowS #
Show SmartSequence
Instance details Defined in Hledger.Data.Types Methods showsPrec :: Int -> SmartSequence -> ShowS # show :: SmartSequence -> String # showList :: [SmartSequence] -> ShowS #
Show SmartDate
Instance details Defined in Hledger.Data.Types Methods showsPrec :: Int -> SmartDate -> ShowS # show :: SmartDate -> String # showList :: [SmartDate] -> ShowS #
Show CustomErr
Instance details Defined in Text.Megaparsec.Custom Methods showsPrec :: Int -> CustomErr -> ShowS # show :: CustomErr -> String # showList :: [CustomErr] -> ShowS #
Show WideBuilder
Instance details Defined in Text.WideString Methods showsPrec :: Int -> WideBuilder -> ShowS # show :: WideBuilder -> String # showList :: [WideBuilder] -> ShowS #
Show RawOpts
Instance details Defined in Hledger.Data.RawOptions Methods showsPrec :: Int -> RawOpts -> ShowS # show :: RawOpts -> String # showList :: [RawOpts] -> ShowS #
Show ReportItemField
Instance details Defined in Hledger.Data.StringFormat Methods showsPrec :: Int -> ReportItemField -> ShowS # show :: ReportItemField -> String # showList :: [ReportItemField] -> ShowS #
Show StringFormatComponent
Instance details Defined in Hledger.Data.StringFormat Methods showsPrec :: Int -> StringFormatComponent -> ShowS # show :: StringFormatComponent -> String # showList :: [StringFormatComponent] -> ShowS #
Show StringFormat
Instance details Defined in Hledger.Data.StringFormat Methods showsPrec :: Int -> StringFormat -> ShowS # show :: StringFormat -> String # showList :: [StringFormat] -> ShowS #
Show AmountDisplayOpts
Instance details Defined in Hledger.Data.Amount Methods showsPrec :: Int -> AmountDisplayOpts -> ShowS # show :: AmountDisplayOpts -> String # showList :: [AmountDisplayOpts] -> ShowS #
Show ValuationType
Instance details Defined in Hledger.Data.Valuation Methods showsPrec :: Int -> ValuationType -> ShowS # show :: ValuationType -> String # showList :: [ValuationType] -> ShowS #
Show Costing
Instance details Defined in Hledger.Data.Valuation Methods showsPrec :: Int -> Costing -> ShowS # show :: Costing -> String # showList :: [Costing] -> ShowS #
Show QueryOpt
Instance details Defined in Hledger.Query Methods showsPrec :: Int -> QueryOpt -> ShowS # show :: QueryOpt -> String # showList :: [QueryOpt] -> ShowS #
Show OrdPlus
Instance details Defined in Hledger.Query Methods showsPrec :: Int -> OrdPlus -> ShowS # show :: OrdPlus -> String # showList :: [OrdPlus] -> ShowS #
Show Query
Instance details Defined in Hledger.Query Methods showsPrec :: Int -> Query -> ShowS # show :: Query -> String # showList :: [Query] -> ShowS #
Show BalancingOpts
Instance details Defined in Hledger.Data.Balancing Methods showsPrec :: Int -> BalancingOpts -> ShowS # show :: BalancingOpts -> String # showList :: [BalancingOpts] -> ShowS #
Show InputOpts
Instance details Defined in Hledger.Read.InputOptions Methods showsPrec :: Int -> InputOpts -> ShowS # show :: InputOpts -> String # showList :: [InputOpts] -> ShowS #
Show ReportSpec
Instance details Defined in Hledger.Reports.ReportOptions Methods showsPrec :: Int -> ReportSpec -> ShowS # show :: ReportSpec -> String # showList :: [ReportSpec] -> ShowS #
Show ReportOpts
Instance details Defined in Hledger.Reports.ReportOptions Methods showsPrec :: Int -> ReportOpts -> ShowS # show :: ReportOpts -> String # showList :: [ReportOpts] -> ShowS #
Show CommodityLayout
Instance details Defined in Hledger.Reports.ReportOptions Methods showsPrec :: Int -> CommodityLayout -> ShowS # show :: CommodityLayout -> String # showList :: [CommodityLayout] -> ShowS #
Show AccountListMode
Instance details Defined in Hledger.Reports.ReportOptions Methods showsPrec :: Int -> AccountListMode -> ShowS # show :: AccountListMode -> String # showList :: [AccountListMode] -> ShowS #
Show BalanceAccumulation
Instance details Defined in Hledger.Reports.ReportOptions Methods showsPrec :: Int -> BalanceAccumulation -> ShowS # show :: BalanceAccumulation -> String # showList :: [BalanceAccumulation] -> ShowS #
Show BalanceCalculation
Instance details Defined in Hledger.Reports.ReportOptions Methods showsPrec :: Int -> BalanceCalculation -> ShowS # show :: BalanceCalculation -> String # showList :: [BalanceCalculation] -> ShowS #
Show DisplayName
Instance details Defined in Hledger.Reports.ReportTypes Methods showsPrec :: Int -> DisplayName -> ShowS # show :: DisplayName -> String # showList :: [DisplayName] -> ShowS #
Show HUnitFailure
Instance details Defined in Test.Tasty.HUnit.Orig Methods showsPrec :: Int -> HUnitFailure -> ShowS # show :: HUnitFailure -> String # showList :: [HUnitFailure] -> ShowS #
Show CliOpts
Instance details Defined in Hledger.Cli.CliOptions Methods showsPrec :: Int -> CliOpts -> ShowS # show :: CliOpts -> String # showList :: [CliOpts] -> ShowS #
Show MixedAmountKey
Instance details Defined in Hledger.Data.Types Methods showsPrec :: Int -> MixedAmountKey -> ShowS # show :: MixedAmountKey -> String # showList :: [MixedAmountKey] -> ShowS #
Show Summary
Instance details Defined in Test.Hspec.Core.Runner Methods showsPrec :: Int -> Summary -> ShowS # show :: Summary -> String # showList :: [Summary] -> ShowS #
Show FailureReason
Instance details Defined in Test.Hspec.Core.Example Methods showsPrec :: Int -> FailureReason -> ShowS # show :: FailureReason -> String # showList :: [FailureReason] -> ShowS #
Show Params
Instance details Defined in Test.Hspec.Core.Example Methods showsPrec :: Int -> Params -> ShowS # show :: Params -> String # showList :: [Params] -> ShowS #
Show Result
Instance details Defined in Test.Hspec.Core.Example Methods showsPrec :: Int -> Result -> ShowS # show :: Result -> String # showList :: [Result] -> ShowS #
Show ResultStatus
Instance details Defined in Test.Hspec.Core.Example Methods showsPrec :: Int -> ResultStatus -> ShowS # show :: ResultStatus -> String # showList :: [ResultStatus] -> ShowS #
Show URI
Instance details Defined in Network.URI Methods showsPrec :: Int -> URI -> ShowS # show :: URI -> String # showList :: [URI] -> ShowS #
Show Socket
Instance details Defined in Network.Socket.Types Methods showsPrec :: Int -> Socket -> ShowS # show :: Socket -> String # showList :: [Socket] -> ShowS #
Show StatusHeaders
Instance details Defined in Network.HTTP.Client.Types Methods showsPrec :: Int -> StatusHeaders -> ShowS # show :: StatusHeaders -> String # showList :: [StatusHeaders] -> ShowS #
Show HttpException
Instance details Defined in Network.HTTP.Client.Types Methods showsPrec :: Int -> HttpException -> ShowS # show :: HttpException -> String # showList :: [HttpException] -> ShowS #
Show HttpExceptionContent
Instance details Defined in Network.HTTP.Client.Types Methods showsPrec :: Int -> HttpExceptionContent -> ShowS # show :: HttpExceptionContent -> String # showList :: [HttpExceptionContent] -> ShowS #
Show Cookie
Instance details Defined in Network.HTTP.Client.Types Methods showsPrec :: Int -> Cookie -> ShowS # show :: Cookie -> String # showList :: [Cookie] -> ShowS #
Show CookieJar
Instance details Defined in Network.HTTP.Client.Types Methods showsPrec :: Int -> CookieJar -> ShowS # show :: CookieJar -> String # showList :: [CookieJar] -> ShowS #
Show Proxy
Instance details Defined in Network.HTTP.Client.Types Methods showsPrec :: Int -> Proxy -> ShowS # show :: Proxy -> String # showList :: [Proxy] -> ShowS #
Show ProxySecureMode
Instance details Defined in Network.HTTP.Client.Types Methods showsPrec :: Int -> ProxySecureMode -> ShowS # show :: ProxySecureMode -> String # showList :: [ProxySecureMode] -> ShowS #
Show Request
Instance details Defined in Network.HTTP.Client.Types Methods showsPrec :: Int -> Request -> ShowS # show :: Request -> String # showList :: [Request] -> ShowS #
Show ResponseTimeout
Instance details Defined in Network.HTTP.Client.Types Methods showsPrec :: Int -> ResponseTimeout -> ShowS # show :: ResponseTimeout -> String # showList :: [ResponseTimeout] -> ShowS #
Show ResponseClose
Instance details Defined in Network.HTTP.Client.Types Methods showsPrec :: Int -> ResponseClose -> ShowS # show :: ResponseClose -> String # showList :: [ResponseClose] -> ShowS #
Show ConnHost
Instance details Defined in Network.HTTP.Client.Types Methods showsPrec :: Int -> ConnHost -> ShowS # show :: ConnHost -> String # showList :: [ConnHost] -> ShowS #
Show ConnKey
Instance details Defined in Network.HTTP.Client.Types Methods showsPrec :: Int -> ConnKey -> ShowS # show :: ConnKey -> String # showList :: [ConnKey] -> ShowS #
Show StreamFileStatus
Instance details Defined in Network.HTTP.Client.Types Methods showsPrec :: Int -> StreamFileStatus -> ShowS # show :: StreamFileStatus -> String # showList :: [StreamFileStatus] -> ShowS #
Show HttpVersion
Instance details Defined in Network.HTTP.Types.Version Methods showsPrec :: Int -> HttpVersion -> ShowS # show :: HttpVersion -> String # showList :: [HttpVersion] -> ShowS #
Show EscapeItem
Instance details Defined in Network.HTTP.Types.URI Methods showsPrec :: Int -> EscapeItem -> ShowS # show :: EscapeItem -> String # showList :: [EscapeItem] -> ShowS #
Show Status
Instance details Defined in Network.HTTP.Types.Status Methods showsPrec :: Int -> Status -> ShowS # show :: Status -> String # showList :: [Status] -> ShowS #
Show StdMethod
Instance details Defined in Network.HTTP.Types.Method Methods showsPrec :: Int -> StdMethod -> ShowS # show :: StdMethod -> String # showList :: [StdMethod] -> ShowS #
Show ByteRange
Instance details Defined in Network.HTTP.Types.Header Methods showsPrec :: Int -> ByteRange -> ShowS # show :: ByteRange -> String # showList :: [ByteRange] -> ShowS #
Show IPRange
Instance details Defined in Data.IP.Range Methods showsPrec :: Int -> IPRange -> ShowS # show :: IPRange -> String # showList :: [IPRange] -> ShowS #
Show IP
Instance details Defined in Data.IP.Addr Methods showsPrec :: Int -> IP -> ShowS # show :: IP -> String # showList :: [IP] -> ShowS #
Show IPv4
Instance details Defined in Data.IP.Addr Methods showsPrec :: Int -> IPv4 -> ShowS # show :: IPv4 -> String # showList :: [IPv4] -> ShowS #
Show IPv6
Instance details Defined in Data.IP.Addr Methods showsPrec :: Int -> IPv6 -> ShowS # show :: IPv6 -> String # showList :: [IPv6] -> ShowS #
Show Event
Instance details Defined in Text.Libyaml Methods showsPrec :: Int -> Event -> ShowS # show :: Event -> String # showList :: [Event] -> ShowS #
Show Style
Instance details Defined in Text.Libyaml Methods showsPrec :: Int -> Style -> ShowS # show :: Style -> String # showList :: [Style] -> ShowS #
Show SequenceStyle
Instance details Defined in Text.Libyaml Methods showsPrec :: Int -> SequenceStyle -> ShowS # show :: SequenceStyle -> String # showList :: [SequenceStyle] -> ShowS #
Show MappingStyle
Instance details Defined in Text.Libyaml Methods showsPrec :: Int -> MappingStyle -> ShowS # show :: MappingStyle -> String # showList :: [MappingStyle] -> ShowS #
Show Tag
Instance details Defined in Text.Libyaml Methods showsPrec :: Int -> Tag -> ShowS # show :: Tag -> String # showList :: [Tag] -> ShowS #
Show YamlMark
Instance details Defined in Text.Libyaml Methods showsPrec :: Int -> YamlMark -> ShowS # show :: YamlMark -> String # showList :: [YamlMark] -> ShowS #
Show YamlException
Instance details Defined in Text.Libyaml Methods showsPrec :: Int -> YamlException -> ShowS # show :: YamlException -> String # showList :: [YamlException] -> ShowS #
Show Tolerance
Instance details Defined in Numeric.RootFinding Methods showsPrec :: Int -> Tolerance -> ShowS # show :: Tolerance -> String # showList :: [Tolerance] -> ShowS #
Show RiddersParam
Instance details Defined in Numeric.RootFinding Methods showsPrec :: Int -> RiddersParam -> ShowS # show :: RiddersParam -> String # showList :: [RiddersParam] -> ShowS #
Show RiddersStep
Instance details Defined in Numeric.RootFinding Methods showsPrec :: Int -> RiddersStep -> ShowS # show :: RiddersStep -> String # showList :: [RiddersStep] -> ShowS #
Show NewtonParam
Instance details Defined in Numeric.RootFinding Methods showsPrec :: Int -> NewtonParam -> ShowS # show :: NewtonParam -> String # showList :: [NewtonParam] -> ShowS #
Show NewtonStep
Instance details Defined in Numeric.RootFinding Methods showsPrec :: Int -> NewtonStep -> ShowS # show :: NewtonStep -> String # showList :: [NewtonStep] -> ShowS #
Show Pos
Instance details Defined in Text.Megaparsec.Pos Methods showsPrec :: Int -> Pos -> ShowS # show :: Pos -> String # showList :: [Pos] -> ShowS #
Show InvalidPosException
Instance details Defined in Text.Megaparsec.Pos Methods showsPrec :: Int -> InvalidPosException -> ShowS # show :: InvalidPosException -> String # showList :: [InvalidPosException] -> ShowS #
Show TyVarBndr
Instance details Defined in Language.Haskell.TH.Syntax Methods showsPrec :: Int -> TyVarBndr -> ShowS # show :: TyVarBndr -> String # showList :: [TyVarBndr] -> ShowS #
Show LogLevel
Instance details Defined in Control.Monad.Logger Methods showsPrec :: Int -> LogLevel -> ShowS # show :: LogLevel -> String # showList :: [LogLevel] -> ShowS #
Show Loc
Instance details Defined in Language.Haskell.TH.Syntax Methods showsPrec :: Int -> Loc -> ShowS # show :: Loc -> String # showList :: [Loc] -> ShowS #
Show AddrInfoFlag
Instance details Defined in Network.Socket.Info Methods showsPrec :: Int -> AddrInfoFlag -> ShowS # show :: AddrInfoFlag -> String # showList :: [AddrInfoFlag] -> ShowS #
Show AddrInfo
Instance details Defined in Network.Socket.Info Methods showsPrec :: Int -> AddrInfo -> ShowS # show :: AddrInfo -> String # showList :: [AddrInfo] -> ShowS #
Show NameInfoFlag
Instance details Defined in Network.Socket.Info Methods showsPrec :: Int -> NameInfoFlag -> ShowS # show :: NameInfoFlag -> String # showList :: [NameInfoFlag] -> ShowS #
Show SocketOption
Instance details Defined in Network.Socket.Options Methods showsPrec :: Int -> SocketOption -> ShowS # show :: SocketOption -> String # showList :: [SocketOption] -> ShowS #
Show StructLinger
Instance details Defined in Network.Socket.Options Methods showsPrec :: Int -> StructLinger -> ShowS # show :: StructLinger -> String # showList :: [StructLinger] -> ShowS #
Show Cmsg
Instance details Defined in Network.Socket.Posix.Cmsg Methods showsPrec :: Int -> Cmsg -> ShowS # show :: Cmsg -> String # showList :: [Cmsg] -> ShowS #
Show CmsgId
Instance details Defined in Network.Socket.Posix.Cmsg Methods showsPrec :: Int -> CmsgId -> ShowS # show :: CmsgId -> String # showList :: [CmsgId] -> ShowS #
Show IPv4TTL
Instance details Defined in Network.Socket.Posix.Cmsg Methods showsPrec :: Int -> IPv4TTL -> ShowS # show :: IPv4TTL -> String # showList :: [IPv4TTL] -> ShowS #
Show IPv6HopLimit
Instance details Defined in Network.Socket.Posix.Cmsg Methods showsPrec :: Int -> IPv6HopLimit -> ShowS # show :: IPv6HopLimit -> String # showList :: [IPv6HopLimit] -> ShowS #
Show IPv4TOS
Instance details Defined in Network.Socket.Posix.Cmsg Methods showsPrec :: Int -> IPv4TOS -> ShowS # show :: IPv4TOS -> String # showList :: [IPv4TOS] -> ShowS #
Show IPv6TClass
Instance details Defined in Network.Socket.Posix.Cmsg Methods showsPrec :: Int -> IPv6TClass -> ShowS # show :: IPv6TClass -> String # showList :: [IPv6TClass] -> ShowS #
Show IPv4PktInfo
Instance details Defined in Network.Socket.Posix.Cmsg Methods showsPrec :: Int -> IPv4PktInfo -> ShowS # show :: IPv4PktInfo -> String # showList :: [IPv4PktInfo] -> ShowS #
Show IPv6PktInfo
Instance details Defined in Network.Socket.Posix.Cmsg Methods showsPrec :: Int -> IPv6PktInfo -> ShowS # show :: IPv6PktInfo -> String # showList :: [IPv6PktInfo] -> ShowS #
Show SocketType
Instance details Defined in Network.Socket.Types Methods showsPrec :: Int -> SocketType -> ShowS # show :: SocketType -> String # showList :: [SocketType] -> ShowS #
Show Family
Instance details Defined in Network.Socket.Types Methods showsPrec :: Int -> Family -> ShowS # show :: Family -> String # showList :: [Family] -> ShowS #
Show PortNumber
Instance details Defined in Network.Socket.Types Methods showsPrec :: Int -> PortNumber -> ShowS # show :: PortNumber -> String # showList :: [PortNumber] -> ShowS #
Show MsgFlag
Instance details Defined in Network.Socket.Flag Methods showsPrec :: Int -> MsgFlag -> ShowS # show :: MsgFlag -> String # showList :: [MsgFlag] -> ShowS #
Show URIAuth
Instance details Defined in Network.URI Methods showsPrec :: Int -> URIAuth -> ShowS # show :: URIAuth -> String # showList :: [URIAuth] -> ShowS #
Show SelfEmbed
Instance details Defined in Database.Persist.Types.Base Methods showsPrec :: Int -> SelfEmbed -> ShowS # show :: SelfEmbed -> String # showList :: [SelfEmbed] -> ShowS #
Show OnlyUniqueException
Instance details Defined in Database.Persist.Types.Base Methods showsPrec :: Int -> OnlyUniqueException -> ShowS # show :: OnlyUniqueException -> String # showList :: [OnlyUniqueException] -> ShowS #
Show PersistUnsafeMigrationException	This `Show` instance renders an error message suitable for printing to the console. This is a little dodgy, but since GHC uses Show instances when displaying uncaught exceptions, we have little choice.
Instance details Defined in Database.Persist.Sql.Migration Methods showsPrec :: Int -> PersistUnsafeMigrationException -> ShowS # show :: PersistUnsafeMigrationException -> String # showList :: [PersistUnsafeMigrationException] -> ShowS #
Show Token
Instance details Defined in Database.Persist.Quasi.Internal Methods showsPrec :: Int -> Token -> ShowS # show :: Token -> String # showList :: [Token] -> ShowS #
Show Line
Instance details Defined in Database.Persist.Quasi.Internal Methods showsPrec :: Int -> Line -> ShowS # show :: Line -> String # showList :: [Line] -> ShowS #
Show LinesWithComments
Instance details Defined in Database.Persist.Quasi.Internal Methods showsPrec :: Int -> LinesWithComments -> ShowS # show :: LinesWithComments -> String # showList :: [LinesWithComments] -> ShowS #
Show UnboundEntityDef
Instance details Defined in Database.Persist.Quasi.Internal Methods showsPrec :: Int -> UnboundEntityDef -> ShowS # show :: UnboundEntityDef -> String # showList :: [UnboundEntityDef] -> ShowS #
Show UnboundFieldDef
Instance details Defined in Database.Persist.Quasi.Internal Methods showsPrec :: Int -> UnboundFieldDef -> ShowS # show :: UnboundFieldDef -> String # showList :: [UnboundFieldDef] -> ShowS #
Show PrimarySpec
Instance details Defined in Database.Persist.Quasi.Internal Methods showsPrec :: Int -> PrimarySpec -> ShowS # show :: PrimarySpec -> String # showList :: [PrimarySpec] -> ShowS #
Show UnboundIdDef
Instance details Defined in Database.Persist.Quasi.Internal Methods showsPrec :: Int -> UnboundIdDef -> ShowS # show :: UnboundIdDef -> String # showList :: [UnboundIdDef] -> ShowS #
Show UnboundCompositeDef
Instance details Defined in Database.Persist.Quasi.Internal Methods showsPrec :: Int -> UnboundCompositeDef -> ShowS # show :: UnboundCompositeDef -> String # showList :: [UnboundCompositeDef] -> ShowS #
Show UnboundForeignDef
Instance details Defined in Database.Persist.Quasi.Internal Methods showsPrec :: Int -> UnboundForeignDef -> ShowS # show :: UnboundForeignDef -> String # showList :: [UnboundForeignDef] -> ShowS #
Show UnboundForeignFieldList
Instance details Defined in Database.Persist.Quasi.Internal Methods showsPrec :: Int -> UnboundForeignFieldList -> ShowS # show :: UnboundForeignFieldList -> String # showList :: [UnboundForeignFieldList] -> ShowS #
Show ForeignFieldReference
Instance details Defined in Database.Persist.Quasi.Internal Methods showsPrec :: Int -> ForeignFieldReference -> ShowS # show :: ForeignFieldReference -> String # showList :: [ForeignFieldReference] -> ShowS #
Show OverflowNatural
Instance details Defined in Database.Persist.Class.PersistField Methods showsPrec :: Int -> OverflowNatural -> ShowS # show :: OverflowNatural -> String # showList :: [OverflowNatural] -> ShowS #
Show Checkmark
Instance details Defined in Database.Persist.Types.Base Methods showsPrec :: Int -> Checkmark -> ShowS # show :: Checkmark -> String # showList :: [Checkmark] -> ShowS #
Show IsNullable
Instance details Defined in Database.Persist.Types.Base Methods showsPrec :: Int -> IsNullable -> ShowS # show :: IsNullable -> String # showList :: [IsNullable] -> ShowS #
Show WhyNullable
Instance details Defined in Database.Persist.Types.Base Methods showsPrec :: Int -> WhyNullable -> ShowS # show :: WhyNullable -> String # showList :: [WhyNullable] -> ShowS #
Show EntityDef
Instance details Defined in Database.Persist.Types.Base Methods showsPrec :: Int -> EntityDef -> ShowS # show :: EntityDef -> String # showList :: [EntityDef] -> ShowS #
Show EntityIdDef
Instance details Defined in Database.Persist.Types.Base Methods showsPrec :: Int -> EntityIdDef -> ShowS # show :: EntityIdDef -> String # showList :: [EntityIdDef] -> ShowS #
Show FieldAttr
Instance details Defined in Database.Persist.Types.Base Methods showsPrec :: Int -> FieldAttr -> ShowS # show :: FieldAttr -> String # showList :: [FieldAttr] -> ShowS #
Show FieldType
Instance details Defined in Database.Persist.Types.Base Methods showsPrec :: Int -> FieldType -> ShowS # show :: FieldType -> String # showList :: [FieldType] -> ShowS #
Show ReferenceDef
Instance details Defined in Database.Persist.Types.Base Methods showsPrec :: Int -> ReferenceDef -> ShowS # show :: ReferenceDef -> String # showList :: [ReferenceDef] -> ShowS #
Show EmbedEntityDef
Instance details Defined in Database.Persist.Types.Base Methods showsPrec :: Int -> EmbedEntityDef -> ShowS # show :: EmbedEntityDef -> String # showList :: [EmbedEntityDef] -> ShowS #
Show EmbedFieldDef
Instance details Defined in Database.Persist.Types.Base Methods showsPrec :: Int -> EmbedFieldDef -> ShowS # show :: EmbedFieldDef -> String # showList :: [EmbedFieldDef] -> ShowS #
Show UniqueDef
Instance details Defined in Database.Persist.Types.Base Methods showsPrec :: Int -> UniqueDef -> ShowS # show :: UniqueDef -> String # showList :: [UniqueDef] -> ShowS #
Show CompositeDef
Instance details Defined in Database.Persist.Types.Base Methods showsPrec :: Int -> CompositeDef -> ShowS # show :: CompositeDef -> String # showList :: [CompositeDef] -> ShowS #
Show ForeignDef
Instance details Defined in Database.Persist.Types.Base Methods showsPrec :: Int -> ForeignDef -> ShowS # show :: ForeignDef -> String # showList :: [ForeignDef] -> ShowS #
Show FieldCascade
Instance details Defined in Database.Persist.Types.Base Methods showsPrec :: Int -> FieldCascade -> ShowS # show :: FieldCascade -> String # showList :: [FieldCascade] -> ShowS #
Show CascadeAction
Instance details Defined in Database.Persist.Types.Base Methods showsPrec :: Int -> CascadeAction -> ShowS # show :: CascadeAction -> String # showList :: [CascadeAction] -> ShowS #
Show PersistException
Instance details Defined in Database.Persist.Types.Base Methods showsPrec :: Int -> PersistException -> ShowS # show :: PersistException -> String # showList :: [PersistException] -> ShowS #
Show SqlType
Instance details Defined in Database.Persist.Types.Base Methods showsPrec :: Int -> SqlType -> ShowS # show :: SqlType -> String # showList :: [SqlType] -> ShowS #
Show PersistFilter
Instance details Defined in Database.Persist.Types.Base Methods showsPrec :: Int -> PersistFilter -> ShowS # show :: PersistFilter -> String # showList :: [PersistFilter] -> ShowS #
Show UpdateException
Instance details Defined in Database.Persist.Types.Base Methods showsPrec :: Int -> UpdateException -> ShowS # show :: UpdateException -> String # showList :: [UpdateException] -> ShowS #
Show PersistUpdate
Instance details Defined in Database.Persist.Types.Base Methods showsPrec :: Int -> PersistUpdate -> ShowS # show :: PersistUpdate -> String # showList :: [PersistUpdate] -> ShowS #
Show FieldDef
Instance details Defined in Database.Persist.Types.Base Methods showsPrec :: Int -> FieldDef -> ShowS # show :: FieldDef -> String # showList :: [FieldDef] -> ShowS #
Show PersistValue
Instance details Defined in Database.Persist.PersistValue Methods showsPrec :: Int -> PersistValue -> ShowS # show :: PersistValue -> String # showList :: [PersistValue] -> ShowS #
Show LiteralType
Instance details Defined in Database.Persist.PersistValue Methods showsPrec :: Int -> LiteralType -> ShowS # show :: LiteralType -> String # showList :: [LiteralType] -> ShowS #
Show FieldNameDB
Instance details Defined in Database.Persist.Names Methods showsPrec :: Int -> FieldNameDB -> ShowS # show :: FieldNameDB -> String # showList :: [FieldNameDB] -> ShowS #
Show FieldNameHS
Instance details Defined in Database.Persist.Names Methods showsPrec :: Int -> FieldNameHS -> ShowS # show :: FieldNameHS -> String # showList :: [FieldNameHS] -> ShowS #
Show EntityNameHS
Instance details Defined in Database.Persist.Names Methods showsPrec :: Int -> EntityNameHS -> ShowS # show :: EntityNameHS -> String # showList :: [EntityNameHS] -> ShowS #
Show EntityNameDB
Instance details Defined in Database.Persist.Names Methods showsPrec :: Int -> EntityNameDB -> ShowS # show :: EntityNameDB -> String # showList :: [EntityNameDB] -> ShowS #
Show ConstraintNameDB
Instance details Defined in Database.Persist.Names Methods showsPrec :: Int -> ConstraintNameDB -> ShowS # show :: ConstraintNameDB -> String # showList :: [ConstraintNameDB] -> ShowS #
Show ConstraintNameHS
Instance details Defined in Database.Persist.Names Methods showsPrec :: Int -> ConstraintNameHS -> ShowS # show :: ConstraintNameHS -> String # showList :: [ConstraintNameHS] -> ShowS #
Show Doc
Instance details Defined in Text.PrettyPrint.HughesPJ Methods showsPrec :: Int -> Doc -> ShowS # show :: Doc -> String # showList :: [Doc] -> ShowS #
Show TextDetails
Instance details Defined in Text.PrettyPrint.Annotated.HughesPJ Methods showsPrec :: Int -> TextDetails -> ShowS # show :: TextDetails -> String # showList :: [TextDetails] -> ShowS #
Show Style
Instance details Defined in Text.PrettyPrint.Annotated.HughesPJ Methods showsPrec :: Int -> Style -> ShowS # show :: Style -> String # showList :: [Style] -> ShowS #
Show Mode
Instance details Defined in Text.PrettyPrint.Annotated.HughesPJ Methods showsPrec :: Int -> Mode -> ShowS # show :: Mode -> String # showList :: [Mode] -> ShowS #
Show CheckColorTty
Instance details Defined in Text.Pretty.Simple.Internal.Printer Methods showsPrec :: Int -> CheckColorTty -> ShowS # show :: CheckColorTty -> String # showList :: [CheckColorTty] -> ShowS #
Show StringOutputStyle
Instance details Defined in Text.Pretty.Simple.Internal.Printer Methods showsPrec :: Int -> StringOutputStyle -> ShowS # show :: StringOutputStyle -> String # showList :: [StringOutputStyle] -> ShowS #
Show OutputOptions
Instance details Defined in Text.Pretty.Simple.Internal.Printer Methods showsPrec :: Int -> OutputOptions -> ShowS # show :: OutputOptions -> String # showList :: [OutputOptions] -> ShowS #
Show Expr
Instance details Defined in Text.Pretty.Simple.Internal.Expr Methods showsPrec :: Int -> Expr -> ShowS # show :: Expr -> String # showList :: [Expr] -> ShowS #
Show ColorOptions
Instance details Defined in Text.Pretty.Simple.Internal.Color Methods showsPrec :: Int -> ColorOptions -> ShowS # show :: ColorOptions -> String # showList :: [ColorOptions] -> ShowS #
Show Style
Instance details Defined in Text.Pretty.Simple.Internal.Color Methods showsPrec :: Int -> Style -> ShowS # show :: Style -> String # showList :: [Style] -> ShowS #
Show Intensity
Instance details Defined in Prettyprinter.Render.Terminal.Internal Methods showsPrec :: Int -> Intensity -> ShowS # show :: Intensity -> String # showList :: [Intensity] -> ShowS #
Show Color
Instance details Defined in Prettyprinter.Render.Terminal.Internal Methods showsPrec :: Int -> Color -> ShowS # show :: Color -> String # showList :: [Color] -> ShowS #
Show FusionDepth
Instance details Defined in Prettyprinter.Internal Methods showsPrec :: Int -> FusionDepth -> ShowS # show :: FusionDepth -> String # showList :: [FusionDepth] -> ShowS #
Show PageWidth
Instance details Defined in Prettyprinter.Internal Methods showsPrec :: Int -> PageWidth -> ShowS # show :: PageWidth -> String # showList :: [PageWidth] -> ShowS #
Show LayoutOptions
Instance details Defined in Prettyprinter.Internal Methods showsPrec :: Int -> LayoutOptions -> ShowS # show :: LayoutOptions -> String # showList :: [LayoutOptions] -> ShowS #
Show Bold
Instance details Defined in Prettyprinter.Render.Terminal.Internal Methods showsPrec :: Int -> Bold -> ShowS # show :: Bold -> String # showList :: [Bold] -> ShowS #
Show Underlined
Instance details Defined in Prettyprinter.Render.Terminal.Internal Methods showsPrec :: Int -> Underlined -> ShowS # show :: Underlined -> String # showList :: [Underlined] -> ShowS #
Show Italicized
Instance details Defined in Prettyprinter.Render.Terminal.Internal Methods showsPrec :: Int -> Italicized -> ShowS # show :: Italicized -> String # showList :: [Italicized] -> ShowS #
Show AnsiStyle
Instance details Defined in Prettyprinter.Render.Terminal.Internal Methods showsPrec :: Int -> AnsiStyle -> ShowS # show :: AnsiStyle -> String # showList :: [AnsiStyle] -> ShowS #
Show ByteArray	Behavior changed in 0.7.2.0. Before 0.7.2.0, this instance rendered 8-bit words less than 16 as a single hexadecimal digit (e.g. 13 was `0xD`). Starting with 0.7.2.0, all 8-bit words are represented as two digits (e.g. 13 is `0x0D`). Since: primitive-0.6.3.0
Instance details Defined in Data.Primitive.ByteArray Methods showsPrec :: Int -> ByteArray -> ShowS # show :: ByteArray -> String # showList :: [ByteArray] -> ShowS #
Show InvalidAccess
Instance details Defined in Control.Monad.Trans.Resource.Internal Methods showsPrec :: Int -> InvalidAccess -> ShowS # show :: InvalidAccess -> String # showList :: [InvalidAccess] -> ShowS #
Show ResourceCleanupException
Instance details Defined in Control.Monad.Trans.Resource.Internal Methods showsPrec :: Int -> ResourceCleanupException -> ShowS # show :: ResourceCleanupException -> String # showList :: [ResourceCleanupException] -> ShowS #
Show Content
Instance details Defined in Text.Hamlet.Parse Methods showsPrec :: Int -> Content -> ShowS # show :: Content -> String # showList :: [Content] -> ShowS #
Show Doc
Instance details Defined in Text.Hamlet.Parse Methods showsPrec :: Int -> Doc -> ShowS # show :: Doc -> String # showList :: [Doc] -> ShowS #
Show Binding
Instance details Defined in Text.Hamlet.Parse Methods showsPrec :: Int -> Binding -> ShowS # show :: Binding -> String # showList :: [Binding] -> ShowS #
Show DataConstr
Instance details Defined in Text.Hamlet.Parse Methods showsPrec :: Int -> DataConstr -> ShowS # show :: DataConstr -> String # showList :: [DataConstr] -> ShowS #
Show Module
Instance details Defined in Text.Hamlet.Parse Methods showsPrec :: Int -> Module -> ShowS # show :: Module -> String # showList :: [Module] -> ShowS #
Show Content
Instance details Defined in Text.Internal.Css Methods showsPrec :: Int -> Content -> ShowS # show :: Content -> String # showList :: [Content] -> ShowS #
Show NewlineStyle
Instance details Defined in Text.Hamlet.Parse Methods showsPrec :: Int -> NewlineStyle -> ShowS # show :: NewlineStyle -> String # showList :: [NewlineStyle] -> ShowS #
Show PixelSize
Instance details Defined in Text.Internal.CssCommon Methods showsPrec :: Int -> PixelSize -> ShowS # show :: PixelSize -> String # showList :: [PixelSize] -> ShowS #
Show ExSize
Instance details Defined in Text.Internal.CssCommon Methods showsPrec :: Int -> ExSize -> ShowS # show :: ExSize -> String # showList :: [ExSize] -> ShowS #
Show EmSize
Instance details Defined in Text.Internal.CssCommon Methods showsPrec :: Int -> EmSize -> ShowS # show :: EmSize -> String # showList :: [EmSize] -> ShowS #
Show Color
Instance details Defined in Text.Internal.CssCommon Methods showsPrec :: Int -> Color -> ShowS # show :: Color -> String # showList :: [Color] -> ShowS #
Show AbsoluteUnit
Instance details Defined in Text.Internal.CssCommon Methods showsPrec :: Int -> AbsoluteUnit -> ShowS # show :: AbsoluteUnit -> String # showList :: [AbsoluteUnit] -> ShowS #
Show AbsoluteSize
Instance details Defined in Text.Internal.CssCommon Methods showsPrec :: Int -> AbsoluteSize -> ShowS # show :: AbsoluteSize -> String # showList :: [AbsoluteSize] -> ShowS #
Show PercentageSize
Instance details Defined in Text.Internal.CssCommon Methods showsPrec :: Int -> PercentageSize -> ShowS # show :: PercentageSize -> String # showList :: [PercentageSize] -> ShowS #
Show VarType
Instance details Defined in Text.Shakespeare Methods showsPrec :: Int -> VarType -> ShowS # show :: VarType -> String # showList :: [VarType] -> ShowS #
Show ResourceError
Instance details Defined in Test.Tasty.Core Methods showsPrec :: Int -> ResourceError -> ShowS # show :: ResourceError -> String # showList :: [ResourceError] -> ShowS #
Show FailureReason
Instance details Defined in Test.Tasty.Core Methods showsPrec :: Int -> FailureReason -> ShowS # show :: FailureReason -> String # showList :: [FailureReason] -> ShowS #
Show Outcome
Instance details Defined in Test.Tasty.Core Methods showsPrec :: Int -> Outcome -> ShowS # show :: Outcome -> String # showList :: [Outcome] -> ShowS #
Show Result
Instance details Defined in Test.Tasty.Core Methods showsPrec :: Int -> Result -> ShowS # show :: Result -> String # showList :: [Result] -> ShowS #
Show Progress
Instance details Defined in Test.Tasty.Core Methods showsPrec :: Int -> Progress -> ShowS # show :: Progress -> String # showList :: [Progress] -> ShowS #
Show Expr
Instance details Defined in Test.Tasty.Patterns.Types Methods showsPrec :: Int -> Expr -> ShowS # show :: Expr -> String # showList :: [Expr] -> ShowS #
Show ModName
Instance details Defined in Language.Haskell.TH.Syntax Methods showsPrec :: Int -> ModName -> ShowS # show :: ModName -> String # showList :: [ModName] -> ShowS #
Show PkgName
Instance details Defined in Language.Haskell.TH.Syntax Methods showsPrec :: Int -> PkgName -> ShowS # show :: PkgName -> String # showList :: [PkgName] -> ShowS #
Show Module
Instance details Defined in Language.Haskell.TH.Syntax Methods showsPrec :: Int -> Module -> ShowS # show :: Module -> String # showList :: [Module] -> ShowS #
Show OccName
Instance details Defined in Language.Haskell.TH.Syntax Methods showsPrec :: Int -> OccName -> ShowS # show :: OccName -> String # showList :: [OccName] -> ShowS #
Show NameFlavour
Instance details Defined in Language.Haskell.TH.Syntax Methods showsPrec :: Int -> NameFlavour -> ShowS # show :: NameFlavour -> String # showList :: [NameFlavour] -> ShowS #
Show NameSpace
Instance details Defined in Language.Haskell.TH.Syntax Methods showsPrec :: Int -> NameSpace -> ShowS # show :: NameSpace -> String # showList :: [NameSpace] -> ShowS #
Show Info
Instance details Defined in Language.Haskell.TH.Syntax Methods showsPrec :: Int -> Info -> ShowS # show :: Info -> String # showList :: [Info] -> ShowS #
Show ModuleInfo
Instance details Defined in Language.Haskell.TH.Syntax Methods showsPrec :: Int -> ModuleInfo -> ShowS # show :: ModuleInfo -> String # showList :: [ModuleInfo] -> ShowS #
Show Fixity
Instance details Defined in Language.Haskell.TH.Syntax Methods showsPrec :: Int -> Fixity -> ShowS # show :: Fixity -> String # showList :: [Fixity] -> ShowS #
Show FixityDirection
Instance details Defined in Language.Haskell.TH.Syntax Methods showsPrec :: Int -> FixityDirection -> ShowS # show :: FixityDirection -> String # showList :: [FixityDirection] -> ShowS #
Show Lit
Instance details Defined in Language.Haskell.TH.Syntax Methods showsPrec :: Int -> Lit -> ShowS # show :: Lit -> String # showList :: [Lit] -> ShowS #
Show Bytes
Instance details Defined in Language.Haskell.TH.Syntax Methods showsPrec :: Int -> Bytes -> ShowS # show :: Bytes -> String # showList :: [Bytes] -> ShowS #
Show Body
Instance details Defined in Language.Haskell.TH.Syntax Methods showsPrec :: Int -> Body -> ShowS # show :: Body -> String # showList :: [Body] -> ShowS #
Show Guard
Instance details Defined in Language.Haskell.TH.Syntax Methods showsPrec :: Int -> Guard -> ShowS # show :: Guard -> String # showList :: [Guard] -> ShowS #
Show Stmt
Instance details Defined in Language.Haskell.TH.Syntax Methods showsPrec :: Int -> Stmt -> ShowS # show :: Stmt -> String # showList :: [Stmt] -> ShowS #
Show Range
Instance details Defined in Language.Haskell.TH.Syntax Methods showsPrec :: Int -> Range -> ShowS # show :: Range -> String # showList :: [Range] -> ShowS #
Show DerivClause
Instance details Defined in Language.Haskell.TH.Syntax Methods showsPrec :: Int -> DerivClause -> ShowS # show :: DerivClause -> String # showList :: [DerivClause] -> ShowS #
Show DerivStrategy
Instance details Defined in Language.Haskell.TH.Syntax Methods showsPrec :: Int -> DerivStrategy -> ShowS # show :: DerivStrategy -> String # showList :: [DerivStrategy] -> ShowS #
Show TypeFamilyHead
Instance details Defined in Language.Haskell.TH.Syntax Methods showsPrec :: Int -> TypeFamilyHead -> ShowS # show :: TypeFamilyHead -> String # showList :: [TypeFamilyHead] -> ShowS #
Show TySynEqn
Instance details Defined in Language.Haskell.TH.Syntax Methods showsPrec :: Int -> TySynEqn -> ShowS # show :: TySynEqn -> String # showList :: [TySynEqn] -> ShowS #
Show Foreign
Instance details Defined in Language.Haskell.TH.Syntax Methods showsPrec :: Int -> Foreign -> ShowS # show :: Foreign -> String # showList :: [Foreign] -> ShowS #
Show Callconv
Instance details Defined in Language.Haskell.TH.Syntax Methods showsPrec :: Int -> Callconv -> ShowS # show :: Callconv -> String # showList :: [Callconv] -> ShowS #
Show Safety
Instance details Defined in Language.Haskell.TH.Syntax Methods showsPrec :: Int -> Safety -> ShowS # show :: Safety -> String # showList :: [Safety] -> ShowS #
Show Pragma
Instance details Defined in Language.Haskell.TH.Syntax Methods showsPrec :: Int -> Pragma -> ShowS # show :: Pragma -> String # showList :: [Pragma] -> ShowS #
Show Inline
Instance details Defined in Language.Haskell.TH.Syntax Methods showsPrec :: Int -> Inline -> ShowS # show :: Inline -> String # showList :: [Inline] -> ShowS #
Show RuleMatch
Instance details Defined in Language.Haskell.TH.Syntax Methods showsPrec :: Int -> RuleMatch -> ShowS # show :: RuleMatch -> String # showList :: [RuleMatch] -> ShowS #
Show Phases
Instance details Defined in Language.Haskell.TH.Syntax Methods showsPrec :: Int -> Phases -> ShowS # show :: Phases -> String # showList :: [Phases] -> ShowS #
Show RuleBndr
Instance details Defined in Language.Haskell.TH.Syntax Methods showsPrec :: Int -> RuleBndr -> ShowS # show :: RuleBndr -> String # showList :: [RuleBndr] -> ShowS #
Show AnnTarget
Instance details Defined in Language.Haskell.TH.Syntax Methods showsPrec :: Int -> AnnTarget -> ShowS # show :: AnnTarget -> String # showList :: [AnnTarget] -> ShowS #
Show SourceUnpackedness
Instance details Defined in Language.Haskell.TH.Syntax Methods showsPrec :: Int -> SourceUnpackedness -> ShowS # show :: SourceUnpackedness -> String # showList :: [SourceUnpackedness] -> ShowS #
Show SourceStrictness
Instance details Defined in Language.Haskell.TH.Syntax Methods showsPrec :: Int -> SourceStrictness -> ShowS # show :: SourceStrictness -> String # showList :: [SourceStrictness] -> ShowS #
Show DecidedStrictness
Instance details Defined in Language.Haskell.TH.Syntax Methods showsPrec :: Int -> DecidedStrictness -> ShowS # show :: DecidedStrictness -> String # showList :: [DecidedStrictness] -> ShowS #
Show Con
Instance details Defined in Language.Haskell.TH.Syntax Methods showsPrec :: Int -> Con -> ShowS # show :: Con -> String # showList :: [Con] -> ShowS #
Show Bang
Instance details Defined in Language.Haskell.TH.Syntax Methods showsPrec :: Int -> Bang -> ShowS # show :: Bang -> String # showList :: [Bang] -> ShowS #
Show PatSynDir
Instance details Defined in Language.Haskell.TH.Syntax Methods showsPrec :: Int -> PatSynDir -> ShowS # show :: PatSynDir -> String # showList :: [PatSynDir] -> ShowS #
Show PatSynArgs
Instance details Defined in Language.Haskell.TH.Syntax Methods showsPrec :: Int -> PatSynArgs -> ShowS # show :: PatSynArgs -> String # showList :: [PatSynArgs] -> ShowS #
Show FamilyResultSig
Instance details Defined in Language.Haskell.TH.Syntax Methods showsPrec :: Int -> FamilyResultSig -> ShowS # show :: FamilyResultSig -> String # showList :: [FamilyResultSig] -> ShowS #
Show TyLit
Instance details Defined in Language.Haskell.TH.Syntax Methods showsPrec :: Int -> TyLit -> ShowS # show :: TyLit -> String # showList :: [TyLit] -> ShowS #
Show Role
Instance details Defined in Language.Haskell.TH.Syntax Methods showsPrec :: Int -> Role -> ShowS # show :: Role -> String # showList :: [Role] -> ShowS #
Show AnnLookup
Instance details Defined in Language.Haskell.TH.Syntax Methods showsPrec :: Int -> AnnLookup -> ShowS # show :: AnnLookup -> String # showList :: [AnnLookup] -> ShowS #
Show Decoding
Instance details Defined in Data.Text.Encoding Methods showsPrec :: Int -> Decoding -> ShowS # show :: Decoding -> String # showList :: [Decoding] -> ShowS #
Show UnicodeException
Instance details Defined in Data.Text.Encoding.Error Methods showsPrec :: Int -> UnicodeException -> ShowS # show :: UnicodeException -> String # showList :: [UnicodeException] -> ShowS #
Show DatatypeInfo
Instance details Defined in Language.Haskell.TH.Datatype Methods showsPrec :: Int -> DatatypeInfo -> ShowS # show :: DatatypeInfo -> String # showList :: [DatatypeInfo] -> ShowS #
Show DatatypeVariant
Instance details Defined in Language.Haskell.TH.Datatype Methods showsPrec :: Int -> DatatypeVariant -> ShowS # show :: DatatypeVariant -> String # showList :: [DatatypeVariant] -> ShowS #
Show ConstructorInfo
Instance details Defined in Language.Haskell.TH.Datatype Methods showsPrec :: Int -> ConstructorInfo -> ShowS # show :: ConstructorInfo -> String # showList :: [ConstructorInfo] -> ShowS #
Show ConstructorVariant
Instance details Defined in Language.Haskell.TH.Datatype Methods showsPrec :: Int -> ConstructorVariant -> ShowS # show :: ConstructorVariant -> String # showList :: [ConstructorVariant] -> ShowS #
Show FieldStrictness
Instance details Defined in Language.Haskell.TH.Datatype Methods showsPrec :: Int -> FieldStrictness -> ShowS # show :: FieldStrictness -> String # showList :: [FieldStrictness] -> ShowS #
Show Unpackedness
Instance details Defined in Language.Haskell.TH.Datatype Methods showsPrec :: Int -> Unpackedness -> ShowS # show :: Unpackedness -> String # showList :: [Unpackedness] -> ShowS #
Show Strictness
Instance details Defined in Language.Haskell.TH.Datatype Methods showsPrec :: Int -> Strictness -> ShowS # show :: Strictness -> String # showList :: [Strictness] -> ShowS #
Show Specificity
Instance details Defined in Language.Haskell.TH.Datatype.TyVarBndr Methods showsPrec :: Int -> Specificity -> ShowS # show :: Specificity -> String # showList :: [Specificity] -> ShowS #
Show ZonedTime
Instance details Defined in Data.Time.LocalTime.Internal.ZonedTime Methods showsPrec :: Int -> ZonedTime -> ShowS # show :: ZonedTime -> String # showList :: [ZonedTime] -> ShowS #
Show TimeLocale
Instance details Defined in Data.Time.Format.Locale Methods showsPrec :: Int -> TimeLocale -> ShowS # show :: TimeLocale -> String # showList :: [TimeLocale] -> ShowS #
Show LocalTime
Instance details Defined in Data.Time.LocalTime.Internal.LocalTime Methods showsPrec :: Int -> LocalTime -> ShowS # show :: LocalTime -> String # showList :: [LocalTime] -> ShowS #
Show TimeOfDay
Instance details Defined in Data.Time.LocalTime.Internal.TimeOfDay Methods showsPrec :: Int -> TimeOfDay -> ShowS # show :: TimeOfDay -> String # showList :: [TimeOfDay] -> ShowS #
Show TimeZone	This only shows the time zone name, or offset if the name is empty.
Instance details Defined in Data.Time.LocalTime.Internal.TimeZone Methods showsPrec :: Int -> TimeZone -> ShowS # show :: TimeZone -> String # showList :: [TimeZone] -> ShowS #
Show CalendarDiffTime
Instance details Defined in Data.Time.LocalTime.Internal.CalendarDiffTime Methods showsPrec :: Int -> CalendarDiffTime -> ShowS # show :: CalendarDiffTime -> String # showList :: [CalendarDiffTime] -> ShowS #
Show SystemTime
Instance details Defined in Data.Time.Clock.Internal.SystemTime Methods showsPrec :: Int -> SystemTime -> ShowS # show :: SystemTime -> String # showList :: [SystemTime] -> ShowS #
Show NominalDiffTime
Instance details Defined in Data.Time.Clock.Internal.NominalDiffTime Methods showsPrec :: Int -> NominalDiffTime -> ShowS # show :: NominalDiffTime -> String # showList :: [NominalDiffTime] -> ShowS #
Show DiffTime
Instance details Defined in Data.Time.Clock.Internal.DiffTime Methods showsPrec :: Int -> DiffTime -> ShowS # show :: DiffTime -> String # showList :: [DiffTime] -> ShowS #
Show DayOfWeek
Instance details Defined in Data.Time.Calendar.Week Methods showsPrec :: Int -> DayOfWeek -> ShowS # show :: DayOfWeek -> String # showList :: [DayOfWeek] -> ShowS #
Show CalendarDiffDays
Instance details Defined in Data.Time.Calendar.CalendarDiffDays Methods showsPrec :: Int -> CalendarDiffDays -> ShowS # show :: CalendarDiffDays -> String # showList :: [CalendarDiffDays] -> ShowS #
Show UnixTime
Instance details Defined in Data.UnixTime.Types Methods showsPrec :: Int -> UnixTime -> ShowS # show :: UnixTime -> String # showList :: [UnixTime] -> ShowS #
Show UnixDiffTime
Instance details Defined in Data.UnixTime.Types Methods showsPrec :: Int -> UnixDiffTime -> ShowS # show :: UnixDiffTime -> String # showList :: [UnixDiffTime] -> ShowS #
Show ConcException
Instance details Defined in UnliftIO.Internals.Async Methods showsPrec :: Int -> ConcException -> ShowS # show :: ConcException -> String # showList :: [ConcException] -> ShowS #
Show UnpackedUUID
Instance details Defined in Data.UUID.Types.Internal Methods showsPrec :: Int -> UnpackedUUID -> ShowS # show :: UnpackedUUID -> String # showList :: [UnpackedUUID] -> ShowS #
Show UUID	Pretty prints a `UUID` (without quotation marks). See also `toString`. `>>>` `show nil`"00000000-0000-0000-0000-000000000000"
Instance details Defined in Data.UUID.Types.Internal Methods showsPrec :: Int -> UUID -> ShowS # show :: UUID -> String # showList :: [UUID] -> ShowS #
Show Request
Instance details Defined in Network.Wai.Internal Methods showsPrec :: Int -> Request -> ShowS # show :: Request -> String # showList :: [Request] -> ShowS #
Show RequestBodyLength
Instance details Defined in Network.Wai.Internal Methods showsPrec :: Int -> RequestBodyLength -> ShowS # show :: RequestBodyLength -> String # showList :: [RequestBodyLength] -> ShowS #
Show FilePart
Instance details Defined in Network.Wai.Internal Methods showsPrec :: Int -> FilePart -> ShowS # show :: FilePart -> String # showList :: [FilePart] -> ShowS #
Show Piece
Instance details Defined in WaiAppStatic.Types Methods showsPrec :: Int -> Piece -> ShowS # show :: Piece -> String # showList :: [Piece] -> ShowS #
Show CorsResourcePolicy
Instance details Defined in Network.Wai.Middleware.Cors Methods showsPrec :: Int -> CorsResourcePolicy -> ShowS # show :: CorsResourcePolicy -> String # showList :: [CorsResourcePolicy] -> ShowS #
Show ExceptionInsideResponseBody
Instance details Defined in Network.Wai.Handler.Warp.Types Methods showsPrec :: Int -> ExceptionInsideResponseBody -> ShowS # show :: ExceptionInsideResponseBody -> String # showList :: [ExceptionInsideResponseBody] -> ShowS #
Show InvalidRequest
Instance details Defined in Network.Wai.Handler.Warp.Types Methods showsPrec :: Int -> InvalidRequest -> ShowS # show :: InvalidRequest -> String # showList :: [InvalidRequest] -> ShowS #
Show UnexpectedEOF
Instance details Defined in System.Console.Wizard.Haskeline Methods showsPrec :: Int -> UnexpectedEOF -> ShowS # show :: UnexpectedEOF -> String # showList :: [UnexpectedEOF] -> ShowS #
Show Event
Instance details Defined in Data.XML.Types Methods showsPrec :: Int -> Event -> ShowS # show :: Event -> String # showList :: [Event] -> ShowS #
Show ExternalID
Instance details Defined in Data.XML.Types Methods showsPrec :: Int -> ExternalID -> ShowS # show :: ExternalID -> String # showList :: [ExternalID] -> ShowS #
Show Doctype
Instance details Defined in Data.XML.Types Methods showsPrec :: Int -> Doctype -> ShowS # show :: Doctype -> String # showList :: [Doctype] -> ShowS #
Show Name
Instance details Defined in Data.XML.Types Methods showsPrec :: Int -> Name -> ShowS # show :: Name -> String # showList :: [Name] -> ShowS #
Show Miscellaneous
Instance details Defined in Data.XML.Types Methods showsPrec :: Int -> Miscellaneous -> ShowS # show :: Miscellaneous -> String # showList :: [Miscellaneous] -> ShowS #
Show Instruction
Instance details Defined in Data.XML.Types Methods showsPrec :: Int -> Instruction -> ShowS # show :: Instruction -> String # showList :: [Instruction] -> ShowS #
Show Prologue
Instance details Defined in Data.XML.Types Methods showsPrec :: Int -> Prologue -> ShowS # show :: Prologue -> String # showList :: [Prologue] -> ShowS #
Show Document
Instance details Defined in Data.XML.Types Methods showsPrec :: Int -> Document -> ShowS # show :: Document -> String # showList :: [Document] -> ShowS #
Show Node
Instance details Defined in Data.XML.Types Methods showsPrec :: Int -> Node -> ShowS # show :: Node -> String # showList :: [Node] -> ShowS #
Show Element
Instance details Defined in Data.XML.Types Methods showsPrec :: Int -> Element -> ShowS # show :: Element -> String # showList :: [Element] -> ShowS #
Show Content
Instance details Defined in Data.XML.Types Methods showsPrec :: Int -> Content -> ShowS # show :: Content -> String # showList :: [Content] -> ShowS #
Show ParseException
Instance details Defined in Data.Yaml.Internal Methods showsPrec :: Int -> ParseException -> ShowS # show :: ParseException -> String # showList :: [ParseException] -> ShowS #
Show Warning
Instance details Defined in Data.Yaml.Internal Methods showsPrec :: Int -> Warning -> ShowS # show :: Warning -> String # showList :: [Warning] -> ShowS #
Show FormMessage
Instance details Defined in Yesod.Form.Types Methods showsPrec :: Int -> FormMessage -> ShowS # show :: FormMessage -> String # showList :: [FormMessage] -> ShowS #
Show Ints
Instance details Defined in Yesod.Form.Types Methods showsPrec :: Int -> Ints -> ShowS # show :: Ints -> String # showList :: [Ints] -> ShowS #
Show Textarea
Instance details Defined in Yesod.Form.Fields Methods showsPrec :: Int -> Textarea -> ShowS # show :: Textarea -> String # showList :: [Textarea] -> ShowS #
Show Header
Instance details Defined in Yesod.Core.Types Methods showsPrec :: Int -> Header -> ShowS # show :: Header -> String # showList :: [Header] -> ShowS #
Show ErrorResponse
Instance details Defined in Yesod.Core.Types Methods showsPrec :: Int -> ErrorResponse -> ShowS # show :: ErrorResponse -> String # showList :: [ErrorResponse] -> ShowS #
Show AuthResult
Instance details Defined in Yesod.Core.Types Methods showsPrec :: Int -> AuthResult -> ShowS # show :: AuthResult -> String # showList :: [AuthResult] -> ShowS #
Show DefaultEnv
Instance details Defined in Yesod.Default.Config Methods showsPrec :: Int -> DefaultEnv -> ShowS # show :: DefaultEnv -> String # showList :: [DefaultEnv] -> ShowS #
Show TypeTree
Instance details Defined in Yesod.Routes.Parse Methods showsPrec :: Int -> TypeTree -> ShowS # show :: TypeTree -> String # showList :: [TypeTree] -> ShowS #
Show SessionCookie
Instance details Defined in Yesod.Core.Types Methods showsPrec :: Int -> SessionCookie -> ShowS # show :: SessionCookie -> String # showList :: [SessionCookie] -> ShowS #
Show ClientSessionDateCache
Instance details Defined in Yesod.Core.Types Methods showsPrec :: Int -> ClientSessionDateCache -> ShowS # show :: ClientSessionDateCache -> String # showList :: [ClientSessionDateCache] -> ShowS #
Show HandlerContents
Instance details Defined in Yesod.Core.Types Methods showsPrec :: Int -> HandlerContents -> ShowS # show :: HandlerContents -> String # showList :: [HandlerContents] -> ShowS #
Show DictionaryHash
Instance details Defined in Codec.Compression.Zlib.Stream Methods showsPrec :: Int -> DictionaryHash -> ShowS # show :: DictionaryHash -> String # showList :: [DictionaryHash] -> ShowS #
Show Format
Instance details Defined in Codec.Compression.Zlib.Stream Methods showsPrec :: Int -> Format -> ShowS # show :: Format -> String # showList :: [Format] -> ShowS #
Show Method
Instance details Defined in Codec.Compression.Zlib.Stream Methods showsPrec :: Int -> Method -> ShowS # show :: Method -> String # showList :: [Method] -> ShowS #
Show CompressionLevel
Instance details Defined in Codec.Compression.Zlib.Stream Methods showsPrec :: Int -> CompressionLevel -> ShowS # show :: CompressionLevel -> String # showList :: [CompressionLevel] -> ShowS #
Show MemoryLevel
Instance details Defined in Codec.Compression.Zlib.Stream Methods showsPrec :: Int -> MemoryLevel -> ShowS # show :: MemoryLevel -> String # showList :: [MemoryLevel] -> ShowS #
Show CompressionStrategy
Instance details Defined in Codec.Compression.Zlib.Stream Methods showsPrec :: Int -> CompressionStrategy -> ShowS # show :: CompressionStrategy -> String # showList :: [CompressionStrategy] -> ShowS #
Show Content
Instance details Defined in Text.Shakespeare Methods showsPrec :: Int -> Content -> ShowS # show :: Content -> String # showList :: [Content] -> ShowS #
Show Extra Source #
Instance details Defined in Hledger.Web.Settings Methods showsPrec :: Int -> Extra -> ShowS # show :: Extra -> String # showList :: [Extra] -> ShowS #
Show Line
Instance details Defined in Text.Hamlet.Parse Methods showsPrec :: Int -> Line -> ShowS # show :: Line -> String # showList :: [Line] -> ShowS #
Show TagPiece
Instance details Defined in Text.Hamlet.Parse Methods showsPrec :: Int -> TagPiece -> ShowS # show :: TagPiece -> String # showList :: [TagPiece] -> ShowS #
Show ConditionalBlock
Instance details Defined in Hledger.Read.CsvReader Methods showsPrec :: Int -> ConditionalBlock -> ShowS # show :: ConditionalBlock -> String # showList :: [ConditionalBlock] -> ShowS #
Show CsvRules
Instance details Defined in Hledger.Read.CsvReader Methods showsPrec :: Int -> CsvRules -> ShowS # show :: CsvRules -> String # showList :: [CsvRules] -> ShowS #
Show Matcher
Instance details Defined in Hledger.Read.CsvReader Methods showsPrec :: Int -> Matcher -> ShowS # show :: Matcher -> String # showList :: [Matcher] -> ShowS #
Show MatcherPrefix
Instance details Defined in Hledger.Read.CsvReader Methods showsPrec :: Int -> MatcherPrefix -> ShowS # show :: MatcherPrefix -> String # showList :: [MatcherPrefix] -> ShowS #
Show AmountDisplay
Instance details Defined in Hledger.Data.Amount Methods showsPrec :: Int -> AmountDisplay -> ShowS # show :: AmountDisplay -> String # showList :: [AmountDisplay] -> ShowS #
Show UnicodeWidthMatch
Instance details Defined in Text.DocLayout Methods showsPrec :: Int -> UnicodeWidthMatch -> ShowS # show :: UnicodeWidthMatch -> String # showList :: [UnicodeWidthMatch] -> ShowS #
Show Emoji
Instance details Defined in Text.DocLayout Methods showsPrec :: Int -> Emoji -> ShowS # show :: Emoji -> String # showList :: [Emoji] -> ShowS #
Show PriceGraph
Instance details Defined in Hledger.Data.Valuation Methods showsPrec :: Int -> PriceGraph -> ShowS # show :: PriceGraph -> String # showList :: [PriceGraph] -> ShowS #
Show Layer
Instance details Defined in Prettyprinter.Render.Terminal.Internal Methods showsPrec :: Int -> Layer -> ShowS # show :: Layer -> String # showList :: [Layer] -> ShowS #
Show NullError
Instance details Defined in Data.NonNull Methods showsPrec :: Int -> NullError -> ShowS # show :: NullError -> String # showList :: [NullError] -> ShowS #
Show Capability Source #
Instance details Defined in Hledger.Web.WebOptions Methods showsPrec :: Int -> Capability -> ShowS # show :: Capability -> String # showList :: [Capability] -> ShowS #
Show WebOpts Source #
Instance details Defined in Hledger.Web.WebOptions Methods showsPrec :: Int -> WebOpts -> ShowS # show :: WebOpts -> String # showList :: [WebOpts] -> ShowS #
Show AmbiguousNumber
Instance details Defined in Hledger.Read.Common Methods showsPrec :: Int -> AmbiguousNumber -> ShowS # show :: AmbiguousNumber -> String # showList :: [AmbiguousNumber] -> ShowS #
Show DigitGrp	A custom show instance, showing digit groups as the parser saw them.
Instance details Defined in Hledger.Read.Common Methods showsPrec :: Int -> DigitGrp -> ShowS # show :: DigitGrp -> String # showList :: [DigitGrp] -> ShowS #
Show RawNumber
Instance details Defined in Hledger.Read.Common Methods showsPrec :: Int -> RawNumber -> ShowS # show :: RawNumber -> String # showList :: [RawNumber] -> ShowS #
Show Etag
Instance details Defined in Yesod.Core.Handler Methods showsPrec :: Int -> Etag -> ShowS # show :: Etag -> String # showList :: [Etag] -> ShowS #
Show EncapsulatedPopperException
Instance details Defined in Network.HTTP.Client.Request Methods showsPrec :: Int -> EncapsulatedPopperException -> ShowS # show :: EncapsulatedPopperException -> String # showList :: [EncapsulatedPopperException] -> ShowS #
Show HttpExceptionContentWrapper
Instance details Defined in Network.HTTP.Client.Types Methods showsPrec :: Int -> HttpExceptionContentWrapper -> ShowS # show :: HttpExceptionContentWrapper -> String # showList :: [HttpExceptionContentWrapper] -> ShowS #
Show ViewData Source #
Instance details Defined in Hledger.Web.Foundation Methods showsPrec :: Int -> ViewData -> ShowS # show :: ViewData -> String # showList :: [ViewData] -> ShowS #
Show FTTypeConDescr
Instance details Defined in Database.Persist.TH Methods showsPrec :: Int -> FTTypeConDescr -> ShowS # show :: FTTypeConDescr -> String # showList :: [FTTypeConDescr] -> ShowS #
Show SqlTypeExp
Instance details Defined in Database.Persist.TH Methods showsPrec :: Int -> SqlTypeExp -> ShowS # show :: SqlTypeExp -> String # showList :: [SqlTypeExp] -> ShowS #
Show Bound
Instance details Defined in Network.Wai.Parse Methods showsPrec :: Int -> Bound -> ShowS # show :: Bound -> String # showList :: [Bound] -> ShowS #
Show SinkStorableException
Instance details Defined in Data.Conduit.Binary Methods showsPrec :: Int -> SinkStorableException -> ShowS # show :: SinkStorableException -> String # showList :: [SinkStorableException] -> ShowS #
Show CodePoint
Instance details Defined in Data.Text.Encoding Methods showsPrec :: Int -> CodePoint -> ShowS # show :: CodePoint -> String # showList :: [CodePoint] -> ShowS #
Show DecoderState
Instance details Defined in Data.Text.Encoding Methods showsPrec :: Int -> DecoderState -> ShowS # show :: DecoderState -> String # showList :: [DecoderState] -> ShowS #
Show RestartTransactionException
Instance details Defined in Hledger.Cli.Commands.Add Methods showsPrec :: Int -> RestartTransactionException -> ShowS # show :: RestartTransactionException -> String # showList :: [RestartTransactionException] -> ShowS #
Show EntryState
Instance details Defined in Hledger.Cli.Commands.Add Methods showsPrec :: Int -> EntryState -> ShowS # show :: EntryState -> String # showList :: [EntryState] -> ShowS #
Show PrevInput
Instance details Defined in Hledger.Cli.Commands.Add Methods showsPrec :: Int -> PrevInput -> ShowS # show :: PrevInput -> String # showList :: [PrevInput] -> ShowS #
Show TxnParams
Instance details Defined in Hledger.Cli.Commands.Add Methods showsPrec :: Int -> TxnParams -> ShowS # show :: TxnParams -> String # showList :: [TxnParams] -> ShowS #
Show EventType
Instance details Defined in Text.Libyaml Methods showsPrec :: Int -> EventType -> ShowS # show :: EventType -> String # showList :: [EventType] -> ShowS #
Show ToEventRawException
Instance details Defined in Text.Libyaml Methods showsPrec :: Int -> ToEventRawException -> ShowS # show :: ToEventRawException -> String # showList :: [ToEventRawException] -> ShowS #
Show a => Show [a]	Since: base-2.1
Instance details Defined in GHC.Show Methods showsPrec :: Int -> [a] -> ShowS # show :: [a] -> String # showList :: [[a]] -> ShowS #
Show a => Show (Maybe a)	Since: base-2.1
Instance details Defined in GHC.Show Methods showsPrec :: Int -> Maybe a -> ShowS # show :: Maybe a -> String # showList :: [Maybe a] -> ShowS #
Show a => Show (Ratio a)	Since: base-2.0.1
Instance details Defined in GHC.Real Methods showsPrec :: Int -> Ratio a -> ShowS # show :: Ratio a -> String # showList :: [Ratio a] -> ShowS #
Show (Ptr a)	Since: base-2.1
Instance details Defined in GHC.Ptr Methods showsPrec :: Int -> Ptr a -> ShowS # show :: Ptr a -> String # showList :: [Ptr a] -> ShowS #
Show (FunPtr a)	Since: base-2.1
Instance details Defined in GHC.Ptr Methods showsPrec :: Int -> FunPtr a -> ShowS # show :: FunPtr a -> String # showList :: [FunPtr a] -> ShowS #
Show p => Show (Par1 p)	Since: base-4.7.0.0
Instance details Defined in GHC.Generics Methods showsPrec :: Int -> Par1 p -> ShowS # show :: Par1 p -> String # showList :: [Par1 p] -> ShowS #
(Integral i, Show i) => Show (DecimalRaw i)
Instance details Defined in Data.Decimal Methods showsPrec :: Int -> DecimalRaw i -> ShowS # show :: DecimalRaw i -> String # showList :: [DecimalRaw i] -> ShowS #
Show a => Show (Only a)
Instance details Defined in Data.Tuple.Only Methods showsPrec :: Int -> Only a -> ShowS # show :: Only a -> String # showList :: [Only a] -> ShowS #
Show (Encoding' a)
Instance details Defined in Data.Aeson.Encoding.Internal Methods showsPrec :: Int -> Encoding' a -> ShowS # show :: Encoding' a -> String # showList :: [Encoding' a] -> ShowS #
Show a => Show (IResult a)
Instance details Defined in Data.Aeson.Types.Internal Methods showsPrec :: Int -> IResult a -> ShowS # show :: IResult a -> String # showList :: [IResult a] -> ShowS #
Show a => Show (Result a)
Instance details Defined in Data.Aeson.Types.Internal Methods showsPrec :: Int -> Result a -> ShowS # show :: Result a -> String # showList :: [Result a] -> ShowS #
Show a => Show (Complex a)	Since: base-2.1
Instance details Defined in Data.Complex Methods showsPrec :: Int -> Complex a -> ShowS # show :: Complex a -> String # showList :: [Complex a] -> ShowS #
Show a => Show (Min a)	Since: base-4.9.0.0
Instance details Defined in Data.Semigroup Methods showsPrec :: Int -> Min a -> ShowS # show :: Min a -> String # showList :: [Min a] -> ShowS #
Show a => Show (Max a)	Since: base-4.9.0.0
Instance details Defined in Data.Semigroup Methods showsPrec :: Int -> Max a -> ShowS # show :: Max a -> String # showList :: [Max a] -> ShowS #
Show a => Show (First a)	Since: base-4.9.0.0
Instance details Defined in Data.Semigroup Methods showsPrec :: Int -> First a -> ShowS # show :: First a -> String # showList :: [First a] -> ShowS #
Show a => Show (Last a)	Since: base-4.9.0.0
Instance details Defined in Data.Semigroup Methods showsPrec :: Int -> Last a -> ShowS # show :: Last a -> String # showList :: [Last a] -> ShowS #
Show m => Show (WrappedMonoid m)	Since: base-4.9.0.0
Instance details Defined in Data.Semigroup Methods showsPrec :: Int -> WrappedMonoid m -> ShowS # show :: WrappedMonoid m -> String # showList :: [WrappedMonoid m] -> ShowS #
Show a => Show (Option a)	Since: base-4.9.0.0
Instance details Defined in Data.Semigroup Methods showsPrec :: Int -> Option a -> ShowS # show :: Option a -> String # showList :: [Option a] -> ShowS #
Show a => Show (ZipList a)	Since: base-4.7.0.0
Instance details Defined in Control.Applicative Methods showsPrec :: Int -> ZipList a -> ShowS # show :: ZipList a -> String # showList :: [ZipList a] -> ShowS #
Show a => Show (Identity a)	This instance would be equivalent to the derived instances of the `Identity` newtype if the `runIdentity` field were removed Since: base-4.8.0.0
Instance details Defined in Data.Functor.Identity Methods showsPrec :: Int -> Identity a -> ShowS # show :: Identity a -> String # showList :: [Identity a] -> ShowS #
Show a => Show (First a)	Since: base-2.1
Instance details Defined in Data.Monoid Methods showsPrec :: Int -> First a -> ShowS # show :: First a -> String # showList :: [First a] -> ShowS #
Show a => Show (Last a)	Since: base-2.1
Instance details Defined in Data.Monoid Methods showsPrec :: Int -> Last a -> ShowS # show :: Last a -> String # showList :: [Last a] -> ShowS #
Show a => Show (Dual a)	Since: base-2.1
Instance details Defined in Data.Semigroup.Internal Methods showsPrec :: Int -> Dual a -> ShowS # show :: Dual a -> String # showList :: [Dual a] -> ShowS #
Show a => Show (Sum a)	Since: base-2.1
Instance details Defined in Data.Semigroup.Internal Methods showsPrec :: Int -> Sum a -> ShowS # show :: Sum a -> String # showList :: [Sum a] -> ShowS #
Show a => Show (Product a)	Since: base-2.1
Instance details Defined in Data.Semigroup.Internal Methods showsPrec :: Int -> Product a -> ShowS # show :: Product a -> String # showList :: [Product a] -> ShowS #
Show a => Show (Down a)	This instance would be equivalent to the derived instances of the `Down` newtype if the `getDown` field were removed Since: base-4.7.0.0
Instance details Defined in Data.Ord Methods showsPrec :: Int -> Down a -> ShowS # show :: Down a -> String # showList :: [Down a] -> ShowS #
Show a => Show (NonEmpty a)	Since: base-4.11.0.0
Instance details Defined in GHC.Show Methods showsPrec :: Int -> NonEmpty a -> ShowS # show :: NonEmpty a -> String # showList :: [NonEmpty a] -> ShowS #
Show e => Show (Base64Error e)
Instance details Defined in Data.Text.Encoding.Base64.Error Methods showsPrec :: Int -> Base64Error e -> ShowS # show :: Base64Error e -> String # showList :: [Base64Error e] -> ShowS #
(PrimType ty, Show ty) => Show (UArray ty)
Instance details Defined in Basement.UArray.Base Methods showsPrec :: Int -> UArray ty -> ShowS # show :: UArray ty -> String # showList :: [UArray ty] -> ShowS #
(PrimType ty, Show ty) => Show (Block ty)
Instance details Defined in Basement.Block.Base Methods showsPrec :: Int -> Block ty -> ShowS # show :: Block ty -> String # showList :: [Block ty] -> ShowS #
Show a => Show (NonEmpty a)
Instance details Defined in Basement.NonEmpty Methods showsPrec :: Int -> NonEmpty a -> ShowS # show :: NonEmpty a -> String # showList :: [NonEmpty a] -> ShowS #
Show (Offset ty)
Instance details Defined in Basement.Types.OffsetSize Methods showsPrec :: Int -> Offset ty -> ShowS # show :: Offset ty -> String # showList :: [Offset ty] -> ShowS #
Show (CountOf ty)
Instance details Defined in Basement.Types.OffsetSize Methods showsPrec :: Int -> CountOf ty -> ShowS # show :: CountOf ty -> String # showList :: [CountOf ty] -> ShowS #
Show (Zn64 n)
Instance details Defined in Basement.Bounded Methods showsPrec :: Int -> Zn64 n -> ShowS # show :: Zn64 n -> String # showList :: [Zn64 n] -> ShowS #
Show (Zn n)
Instance details Defined in Basement.Bounded Methods showsPrec :: Int -> Zn n -> ShowS # show :: Zn n -> String # showList :: [Zn n] -> ShowS #
Show s => Show (CI s)
Instance details Defined in Data.CaseInsensitive.Internal Methods showsPrec :: Int -> CI s -> ShowS # show :: CI s -> String # showList :: [CI s] -> ShowS #
Show a => Show (Group a)
Instance details Defined in System.Console.CmdArgs.Explicit.Type Methods showsPrec :: Int -> Group a -> ShowS # show :: Group a -> String # showList :: [Group a] -> ShowS #
Show a => Show (Flush a)
Instance details Defined in Data.Conduit.Internal.Conduit Methods showsPrec :: Int -> Flush a -> ShowS # show :: Flush a -> String # showList :: [Flush a] -> ShowS #
Show a => Show (IntMap a)
Instance details Defined in Data.IntMap.Internal Methods showsPrec :: Int -> IntMap a -> ShowS # show :: IntMap a -> String # showList :: [IntMap a] -> ShowS #
Show vertex => Show (SCC vertex)	Since: containers-0.5.9
Instance details Defined in Data.Graph Methods showsPrec :: Int -> SCC vertex -> ShowS # show :: SCC vertex -> String # showList :: [SCC vertex] -> ShowS #
Show a => Show (Tree a)
Instance details Defined in Data.Tree Methods showsPrec :: Int -> Tree a -> ShowS # show :: Tree a -> String # showList :: [Tree a] -> ShowS #
Show a => Show (Seq a)
Instance details Defined in Data.Sequence.Internal Methods showsPrec :: Int -> Seq a -> ShowS # show :: Seq a -> String # showList :: [Seq a] -> ShowS #
Show a => Show (ViewL a)
Instance details Defined in Data.Sequence.Internal Methods showsPrec :: Int -> ViewL a -> ShowS # show :: ViewL a -> String # showList :: [ViewL a] -> ShowS #
Show a => Show (ViewR a)
Instance details Defined in Data.Sequence.Internal Methods showsPrec :: Int -> ViewR a -> ShowS # show :: ViewR a -> String # showList :: [ViewR a] -> ShowS #
Show a => Show (Set a)
Instance details Defined in Data.Set.Internal Methods showsPrec :: Int -> Set a -> ShowS # show :: Set a -> String # showList :: [Set a] -> ShowS #
Show (Blake2s bitlen)
Instance details Defined in Crypto.Hash.Blake2 Methods showsPrec :: Int -> Blake2s bitlen -> ShowS # show :: Blake2s bitlen -> String # showList :: [Blake2s bitlen] -> ShowS #
Show (Blake2b bitlen)
Instance details Defined in Crypto.Hash.Blake2 Methods showsPrec :: Int -> Blake2b bitlen -> ShowS # show :: Blake2b bitlen -> String # showList :: [Blake2b bitlen] -> ShowS #
Show (Blake2sp bitlen)
Instance details Defined in Crypto.Hash.Blake2 Methods showsPrec :: Int -> Blake2sp bitlen -> ShowS # show :: Blake2sp bitlen -> String # showList :: [Blake2sp bitlen] -> ShowS #
Show (Blake2bp bitlen)
Instance details Defined in Crypto.Hash.Blake2 Methods showsPrec :: Int -> Blake2bp bitlen -> ShowS # show :: Blake2bp bitlen -> String # showList :: [Blake2bp bitlen] -> ShowS #
Show (SHAKE128 bitlen)
Instance details Defined in Crypto.Hash.SHAKE Methods showsPrec :: Int -> SHAKE128 bitlen -> ShowS # show :: SHAKE128 bitlen -> String # showList :: [SHAKE128 bitlen] -> ShowS #
Show (SHAKE256 bitlen)
Instance details Defined in Crypto.Hash.SHAKE Methods showsPrec :: Int -> SHAKE256 bitlen -> ShowS # show :: SHAKE256 bitlen -> String # showList :: [SHAKE256 bitlen] -> ShowS #
Show (Digest a)
Instance details Defined in Crypto.Hash.Types Methods showsPrec :: Int -> Digest a -> ShowS # show :: Digest a -> String # showList :: [Digest a] -> ShowS #
Show a => Show (CryptoFailable a)
Instance details Defined in Crypto.Error.Types Methods showsPrec :: Int -> CryptoFailable a -> ShowS # show :: CryptoFailable a -> String # showList :: [CryptoFailable a] -> ShowS #
Show1 f => Show (Fix f)
Instance details Defined in Data.Fix Methods showsPrec :: Int -> Fix f -> ShowS # show :: Fix f -> String # showList :: [Fix f] -> ShowS #
(Functor f, Show1 f) => Show (Mu f)
Instance details Defined in Data.Fix Methods showsPrec :: Int -> Mu f -> ShowS # show :: Mu f -> String # showList :: [Mu f] -> ShowS #
(Functor f, Show1 f) => Show (Nu f)
Instance details Defined in Data.Fix Methods showsPrec :: Int -> Nu f -> ShowS # show :: Nu f -> String # showList :: [Nu f] -> ShowS #
Show a => Show (DNonEmpty a)
Instance details Defined in Data.DList.DNonEmpty.Internal Methods showsPrec :: Int -> DNonEmpty a -> ShowS # show :: DNonEmpty a -> String # showList :: [DNonEmpty a] -> ShowS #
Show a => Show (DList a)
Instance details Defined in Data.DList.Internal Methods showsPrec :: Int -> DList a -> ShowS # show :: DList a -> String # showList :: [DList a] -> ShowS #
Show a => Show (Doc a)
Instance details Defined in Text.DocLayout Methods showsPrec :: Int -> Doc a -> ShowS # show :: Doc a -> String # showList :: [Doc a] -> ShowS #
Show a => Show (Hashed a)
Instance details Defined in Data.Hashable.Class Methods showsPrec :: Int -> Hashed a -> ShowS # show :: Hashed a -> String # showList :: [Hashed a] -> ShowS #
Show (Reader m)
Instance details Defined in Hledger.Read.Common Methods showsPrec :: Int -> Reader m -> ShowS # show :: Reader m -> String # showList :: [Reader m] -> ShowS #
Show s => Show (PosState s)
Instance details Defined in Text.Megaparsec.State Methods showsPrec :: Int -> PosState s -> ShowS # show :: PosState s -> String # showList :: [PosState s] -> ShowS #
Show e => Show (FinalParseError' e)
Instance details Defined in Text.Megaparsec.Custom Methods showsPrec :: Int -> FinalParseError' e -> ShowS # show :: FinalParseError' e -> String # showList :: [FinalParseError' e] -> ShowS #
Show e => Show (FinalParseErrorBundle' e)
Instance details Defined in Text.Megaparsec.Custom Methods showsPrec :: Int -> FinalParseErrorBundle' e -> ShowS # show :: FinalParseErrorBundle' e -> String # showList :: [FinalParseErrorBundle' e] -> ShowS #
Show body => Show (HistoriedResponse body)
Instance details Defined in Network.HTTP.Client Methods showsPrec :: Int -> HistoriedResponse body -> ShowS # show :: HistoriedResponse body -> String # showList :: [HistoriedResponse body] -> ShowS #
Show body => Show (Response body)
Instance details Defined in Network.HTTP.Client.Types Methods showsPrec :: Int -> Response body -> ShowS # show :: Response body -> String # showList :: [Response body] -> ShowS #
Show a => Show (AddrRange a)
Instance details Defined in Data.IP.Range Methods showsPrec :: Int -> AddrRange a -> ShowS # show :: AddrRange a -> String # showList :: [AddrRange a] -> ShowS #
Show a => Show (Root a)
Instance details Defined in Numeric.RootFinding Methods showsPrec :: Int -> Root a -> ShowS # show :: Root a -> String # showList :: [Root a] -> ShowS #
Show t => Show (ErrorItem t)
Instance details Defined in Text.Megaparsec.Error Methods showsPrec :: Int -> ErrorItem t -> ShowS # show :: ErrorItem t -> String # showList :: [ErrorItem t] -> ShowS #
Show e => Show (ErrorFancy e)
Instance details Defined in Text.Megaparsec.Error Methods showsPrec :: Int -> ErrorFancy e -> ShowS # show :: ErrorFancy e -> String # showList :: [ErrorFancy e] -> ShowS #
Show mono => Show (NonNull mono)
Instance details Defined in Data.NonNull Methods showsPrec :: Int -> NonNull mono -> ShowS # show :: NonNull mono -> String # showList :: [NonNull mono] -> ShowS #
Show (Pool a)
Instance details Defined in Data.Pool Methods showsPrec :: Int -> Pool a -> ShowS # show :: Pool a -> String # showList :: [Pool a] -> ShowS #
(Show (Key record), Show record) => Show (Entity record)
Instance details Defined in Database.Persist.Class.PersistEntity Methods showsPrec :: Int -> Entity record -> ShowS # show :: Entity record -> String # showList :: [Entity record] -> ShowS #
Show (Doc a)
Instance details Defined in Text.PrettyPrint.Annotated.HughesPJ Methods showsPrec :: Int -> Doc a -> ShowS # show :: Doc a -> String # showList :: [Doc a] -> ShowS #
Show a => Show (AnnotDetails a)
Instance details Defined in Text.PrettyPrint.Annotated.HughesPJ Methods showsPrec :: Int -> AnnotDetails a -> ShowS # show :: AnnotDetails a -> String # showList :: [AnnotDetails a] -> ShowS #
Show a => Show (Span a)
Instance details Defined in Text.PrettyPrint.Annotated.HughesPJ Methods showsPrec :: Int -> Span a -> ShowS # show :: Span a -> String # showList :: [Span a] -> ShowS #
Show (Doc ann)	`(show doc)` prettyprints document `doc` with `defaultLayoutOptions`, ignoring all annotations.
Instance details Defined in Prettyprinter.Internal Methods showsPrec :: Int -> Doc ann -> ShowS # show :: Doc ann -> String # showList :: [Doc ann] -> ShowS #
Show a => Show (Tape a)
Instance details Defined in Text.Pretty.Simple.Internal.Printer Methods showsPrec :: Int -> Tape a -> ShowS # show :: Tape a -> String # showList :: [Tape a] -> ShowS #
Show a => Show (Stream a)
Instance details Defined in Text.Pretty.Simple.Internal.Printer Methods showsPrec :: Int -> Stream a -> ShowS # show :: Stream a -> String # showList :: [Stream a] -> ShowS #
Show a => Show (CommaSeparated a)
Instance details Defined in Text.Pretty.Simple.Internal.Expr Methods showsPrec :: Int -> CommaSeparated a -> ShowS # show :: CommaSeparated a -> String # showList :: [CommaSeparated a] -> ShowS #
Show ann => Show (SimpleDocStream ann)
Instance details Defined in Prettyprinter.Internal Methods showsPrec :: Int -> SimpleDocStream ann -> ShowS # show :: SimpleDocStream ann -> String # showList :: [SimpleDocStream ann] -> ShowS #
(Show a, Prim a) => Show (PrimArray a)	Since: primitive-0.6.4.0
Instance details Defined in Data.Primitive.PrimArray Methods showsPrec :: Int -> PrimArray a -> ShowS # show :: PrimArray a -> String # showList :: [PrimArray a] -> ShowS #
Show a => Show (SmallArray a)
Instance details Defined in Data.Primitive.SmallArray Methods showsPrec :: Int -> SmallArray a -> ShowS # show :: SmallArray a -> String # showList :: [SmallArray a] -> ShowS #
Show a => Show (Array a)
Instance details Defined in Data.Primitive.Array Methods showsPrec :: Int -> Array a -> ShowS # show :: Array a -> String # showList :: [Array a] -> ShowS #
Show g => Show (AtomicGen g)
Instance details Defined in System.Random.Stateful Methods showsPrec :: Int -> AtomicGen g -> ShowS # show :: AtomicGen g -> String # showList :: [AtomicGen g] -> ShowS #
Show g => Show (IOGen g)
Instance details Defined in System.Random.Stateful Methods showsPrec :: Int -> IOGen g -> ShowS # show :: IOGen g -> String # showList :: [IOGen g] -> ShowS #
Show g => Show (STGen g)
Instance details Defined in System.Random.Stateful Methods showsPrec :: Int -> STGen g -> ShowS # show :: STGen g -> String # showList :: [STGen g] -> ShowS #
Show g => Show (TGen g)
Instance details Defined in System.Random.Stateful Methods showsPrec :: Int -> TGen g -> ShowS # show :: TGen g -> String # showList :: [TGen g] -> ShowS #
Show g => Show (StateGen g)
Instance details Defined in System.Random.Internal Methods showsPrec :: Int -> StateGen g -> ShowS # show :: StateGen g -> String # showList :: [StateGen g] -> ShowS #
Show v => Show (Result v)
Instance details Defined in Text.Hamlet.Parse Methods showsPrec :: Int -> Result v -> ShowS # show :: Result v -> String # showList :: [Result v] -> ShowS #
Show a => Show (Maybe a)
Instance details Defined in Data.Strict.Maybe Methods showsPrec :: Int -> Maybe a -> ShowS # show :: Maybe a -> String # showList :: [Maybe a] -> ShowS #
Show a => Show (HashSet a)
Instance details Defined in Data.HashSet.Internal Methods showsPrec :: Int -> HashSet a -> ShowS # show :: HashSet a -> String # showList :: [HashSet a] -> ShowS #
(Show a, Storable a) => Show (Vector a)
Instance details Defined in Data.Vector.Storable Methods showsPrec :: Int -> Vector a -> ShowS # show :: Vector a -> String # showList :: [Vector a] -> ShowS #
(Show a, Prim a) => Show (Vector a)
Instance details Defined in Data.Vector.Primitive Methods showsPrec :: Int -> Vector a -> ShowS # show :: Vector a -> String # showList :: [Vector a] -> ShowS #
Show a => Show (Vector a)
Instance details Defined in Data.Vector Methods showsPrec :: Int -> Vector a -> ShowS # show :: Vector a -> String # showList :: [Vector a] -> ShowS #
Show c => Show (FileInfo c)
Instance details Defined in Network.Wai.Parse Methods showsPrec :: Int -> FileInfo c -> ShowS # show :: FileInfo c -> String # showList :: [FileInfo c] -> ShowS #
Show a => Show (FormResult a)
Instance details Defined in Yesod.Form.Types Methods showsPrec :: Int -> FormResult a -> ShowS # show :: FormResult a -> String # showList :: [FormResult a] -> ShowS #
Show (Route WaiSubsiteWithAuth)
Instance details Defined in Yesod.Core.Types Methods showsPrec :: Int -> Route WaiSubsiteWithAuth -> ShowS # show :: Route WaiSubsiteWithAuth -> String # showList :: [Route WaiSubsiteWithAuth] -> ShowS #
Show (Route WaiSubsite)
Instance details Defined in Yesod.Core.Types Methods showsPrec :: Int -> Route WaiSubsite -> ShowS # show :: Route WaiSubsite -> String # showList :: [Route WaiSubsite] -> ShowS #
Show (Route LiteApp)
Instance details Defined in Yesod.Core.Internal.LiteApp Methods showsPrec :: Int -> Route LiteApp -> ShowS # show :: Route LiteApp -> String # showList :: [Route LiteApp] -> ShowS #
Show (Route Static)
Instance details Defined in Yesod.Static Methods showsPrec :: Int -> Route Static -> ShowS # show :: Route Static -> String # showList :: [Route Static] -> ShowS #
Show (Route App) Source #
Instance details Defined in Hledger.Web.Foundation Methods showsPrec :: Int -> Route App -> ShowS # show :: Route App -> String # showList :: [Route App] -> ShowS #
Show typ => Show (ResourceTree typ)
Instance details Defined in Yesod.Routes.TH.Types Methods showsPrec :: Int -> ResourceTree typ -> ShowS # show :: ResourceTree typ -> String # showList :: [ResourceTree typ] -> ShowS #
Show typ => Show (Resource typ)
Instance details Defined in Yesod.Routes.TH.Types Methods showsPrec :: Int -> Resource typ -> ShowS # show :: Resource typ -> String # showList :: [Resource typ] -> ShowS #
Show typ => Show (Piece typ)
Instance details Defined in Yesod.Routes.TH.Types Methods showsPrec :: Int -> Piece typ -> ShowS # show :: Piece typ -> String # showList :: [Piece typ] -> ShowS #
Show typ => Show (Dispatch typ)
Instance details Defined in Yesod.Routes.TH.Types Methods showsPrec :: Int -> Dispatch typ -> ShowS # show :: Dispatch typ -> String # showList :: [Dispatch typ] -> ShowS #
Show a => Show (FlatResource a)
Instance details Defined in Yesod.Routes.TH.Types Methods showsPrec :: Int -> FlatResource a -> ShowS # show :: FlatResource a -> String # showList :: [FlatResource a] -> ShowS #
Show url => Show (Location url)
Instance details Defined in Yesod.Core.Types Methods showsPrec :: Int -> Location url -> ShowS # show :: Location url -> String # showList :: [Location url] -> ShowS #
Show url => Show (Script url)
Instance details Defined in Yesod.Core.Types Methods showsPrec :: Int -> Script url -> ShowS # show :: Script url -> String # showList :: [Script url] -> ShowS #
Show url => Show (Stylesheet url)
Instance details Defined in Yesod.Core.Types Methods showsPrec :: Int -> Stylesheet url -> ShowS # show :: Stylesheet url -> String # showList :: [Stylesheet url] -> ShowS #
Show env => Show (ArgConfig env)
Instance details Defined in Yesod.Default.Config Methods showsPrec :: Int -> ArgConfig env -> ShowS # show :: ArgConfig env -> String # showList :: [ArgConfig env] -> ShowS #
Show a => Show (FastTree a)
Instance details Defined in Hledger.Data.Account Methods showsPrec :: Int -> FastTree a -> ShowS # show :: FastTree a -> String # showList :: [FastTree a] -> ShowS #
Show a => Show (ParseState a)
Instance details Defined in Database.Persist.Quasi.Internal Methods showsPrec :: Int -> ParseState a -> ShowS # show :: ParseState a -> String # showList :: [ParseState a] -> ShowS #
(Show a, Show b) => Show (Either a b)	Since: base-3.0
Instance details Defined in Data.Either Methods showsPrec :: Int -> Either a b -> ShowS # show :: Either a b -> String # showList :: [Either a b] -> ShowS #
Show (V1 p)	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Methods showsPrec :: Int -> V1 p -> ShowS # show :: V1 p -> String # showList :: [V1 p] -> ShowS #
Show (U1 p)	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Methods showsPrec :: Int -> U1 p -> ShowS # show :: U1 p -> String # showList :: [U1 p] -> ShowS #
Show (TypeRep a)
Instance details Defined in Data.Typeable.Internal Methods showsPrec :: Int -> TypeRep a -> ShowS # show :: TypeRep a -> String # showList :: [TypeRep a] -> ShowS #
(Show a, Show b) => Show (a, b)	Since: base-2.1
Instance details Defined in GHC.Show Methods showsPrec :: Int -> (a, b) -> ShowS # show :: (a, b) -> String # showList :: [(a, b)] -> ShowS #
Show (ST s a)	Since: base-2.1
Instance details Defined in GHC.ST Methods showsPrec :: Int -> ST s a -> ShowS # show :: ST s a -> String # showList :: [ST s a] -> ShowS #
(Show k, Show v) => Show (HashMap k v)
Instance details Defined in Data.HashMap.Internal Methods showsPrec :: Int -> HashMap k v -> ShowS # show :: HashMap k v -> String # showList :: [HashMap k v] -> ShowS #
(Show k, Show a) => Show (Map k a)
Instance details Defined in Data.Map.Internal Methods showsPrec :: Int -> Map k a -> ShowS # show :: Map k a -> String # showList :: [Map k a] -> ShowS #
(Ix a, Show a, Show b) => Show (Array a b)	Since: base-2.1
Instance details Defined in GHC.Arr Methods showsPrec :: Int -> Array a b -> ShowS # show :: Array a b -> String # showList :: [Array a b] -> ShowS #
(Show i, Show r) => Show (IResult i r)
Instance details Defined in Data.Attoparsec.Internal.Types Methods showsPrec :: Int -> IResult i r -> ShowS # show :: IResult i r -> String # showList :: [IResult i r] -> ShowS #
HasResolution a => Show (Fixed a)	Since: base-2.1
Instance details Defined in Data.Fixed Methods showsPrec :: Int -> Fixed a -> ShowS # show :: Fixed a -> String # showList :: [Fixed a] -> ShowS #
(Show a, Show b) => Show (Arg a b)	Since: base-4.9.0.0
Instance details Defined in Data.Semigroup Methods showsPrec :: Int -> Arg a b -> ShowS # show :: Arg a b -> String # showList :: [Arg a b] -> ShowS #
Show (Proxy s)	Since: base-4.7.0.0
Instance details Defined in Data.Proxy Methods showsPrec :: Int -> Proxy s -> ShowS # show :: Proxy s -> String # showList :: [Proxy s] -> ShowS #
(Show1 m, Show a) => Show (MaybeT m a)
Instance details Defined in Control.Monad.Trans.Maybe Methods showsPrec :: Int -> MaybeT m a -> ShowS # show :: MaybeT m a -> String # showList :: [MaybeT m a] -> ShowS #
(Show a, Show1 f) => Show (Free f a)
Instance details Defined in Control.Monad.Free Methods showsPrec :: Int -> Free f a -> ShowS # show :: Free f a -> String # showList :: [Free f a] -> ShowS #
(Show a, Show b) => Show (CompoundPeriodicReport a b)
Instance details Defined in Hledger.Reports.ReportTypes Methods showsPrec :: Int -> CompoundPeriodicReport a b -> ShowS # show :: CompoundPeriodicReport a b -> String # showList :: [CompoundPeriodicReport a b] -> ShowS #
(Show a, Show b) => Show (PeriodicReportRow a b)
Instance details Defined in Hledger.Reports.ReportTypes Methods showsPrec :: Int -> PeriodicReportRow a b -> ShowS # show :: PeriodicReportRow a b -> String # showList :: [PeriodicReportRow a b] -> ShowS #
(Show a, Show b) => Show (PeriodicReport a b)
Instance details Defined in Hledger.Reports.ReportTypes Methods showsPrec :: Int -> PeriodicReport a b -> ShowS # show :: PeriodicReport a b -> String # showList :: [PeriodicReport a b] -> ShowS #
(Show s, Show (Token s), Show e) => Show (ParseErrorBundle s e)
Instance details Defined in Text.Megaparsec.Error Methods showsPrec :: Int -> ParseErrorBundle s e -> ShowS # show :: ParseErrorBundle s e -> String # showList :: [ParseErrorBundle s e] -> ShowS #
(Show (Token s), Show e) => Show (ParseError s e)
Instance details Defined in Text.Megaparsec.Error Methods showsPrec :: Int -> ParseError s e -> ShowS # show :: ParseError s e -> String # showList :: [ParseError s e] -> ShowS #
(Show (ParseError s e), Show s) => Show (State s e)
Instance details Defined in Text.Megaparsec.State Methods showsPrec :: Int -> State s e -> ShowS # show :: State s e -> String # showList :: [State s e] -> ShowS #
(Show1 m, Show a) => Show (ListT m a)
Instance details Defined in Control.Monad.Trans.List Methods showsPrec :: Int -> ListT m a -> ShowS # show :: ListT m a -> String # showList :: [ListT m a] -> ShowS #
(Show a, Show b) => Show (Pair a b)
Instance details Defined in Data.Strict.Tuple Methods showsPrec :: Int -> Pair a b -> ShowS # show :: Pair a b -> String # showList :: [Pair a b] -> ShowS #
(Show a, Show b) => Show (These a b)
Instance details Defined in Data.Strict.These Methods showsPrec :: Int -> These a b -> ShowS # show :: These a b -> String # showList :: [These a b] -> ShowS #
(Show a, Show b) => Show (Either a b)
Instance details Defined in Data.Strict.Either Methods showsPrec :: Int -> Either a b -> ShowS # show :: Either a b -> String # showList :: [Either a b] -> ShowS #
(Show a, Show b) => Show (These a b)
Instance details Defined in Data.These Methods showsPrec :: Int -> These a b -> ShowS # show :: These a b -> String # showList :: [These a b] -> ShowS #
(Show a, Show b) => Show (Fragment a b)
Instance details Defined in Yesod.Core.Handler Methods showsPrec :: Int -> Fragment a b -> ShowS # show :: Fragment a b -> String # showList :: [Fragment a b] -> ShowS #
(Show environment, Show extra) => Show (AppConfig environment extra)
Instance details Defined in Yesod.Default.Config Methods showsPrec :: Int -> AppConfig environment extra -> ShowS # show :: AppConfig environment extra -> String # showList :: [AppConfig environment extra] -> ShowS #
Show (VarExp msg url)
Instance details Defined in Text.Hamlet Methods showsPrec :: Int -> VarExp msg url -> ShowS # show :: VarExp msg url -> String # showList :: [VarExp msg url] -> ShowS #
Show (f p) => Show (Rec1 f p)	Since: base-4.7.0.0
Instance details Defined in GHC.Generics Methods showsPrec :: Int -> Rec1 f p -> ShowS # show :: Rec1 f p -> String # showList :: [Rec1 f p] -> ShowS #
Show (URec Char p)	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Methods showsPrec :: Int -> URec Char p -> ShowS # show :: URec Char p -> String # showList :: [URec Char p] -> ShowS #
Show (URec Double p)	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Methods showsPrec :: Int -> URec Double p -> ShowS # show :: URec Double p -> String # showList :: [URec Double p] -> ShowS #
Show (URec Float p)
Instance details Defined in GHC.Generics Methods showsPrec :: Int -> URec Float p -> ShowS # show :: URec Float p -> String # showList :: [URec Float p] -> ShowS #
Show (URec Int p)	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Methods showsPrec :: Int -> URec Int p -> ShowS # show :: URec Int p -> String # showList :: [URec Int p] -> ShowS #
Show (URec Word p)	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Methods showsPrec :: Int -> URec Word p -> ShowS # show :: URec Word p -> String # showList :: [URec Word p] -> ShowS #
(Show a, Show b, Show c) => Show (a, b, c)	Since: base-2.1
Instance details Defined in GHC.Show Methods showsPrec :: Int -> (a, b, c) -> ShowS # show :: (a, b, c) -> String # showList :: [(a, b, c)] -> ShowS #
Show a => Show (Const a b)	This instance would be equivalent to the derived instances of the `Const` newtype if the `getConst` field were removed Since: base-4.8.0.0
Instance details Defined in Data.Functor.Const Methods showsPrec :: Int -> Const a b -> ShowS # show :: Const a b -> String # showList :: [Const a b] -> ShowS #
Show (f a) => Show (Ap f a)	Since: base-4.12.0.0
Instance details Defined in Data.Monoid Methods showsPrec :: Int -> Ap f a -> ShowS # show :: Ap f a -> String # showList :: [Ap f a] -> ShowS #
Show (f a) => Show (Alt f a)	Since: base-4.8.0.0
Instance details Defined in Data.Semigroup.Internal Methods showsPrec :: Int -> Alt f a -> ShowS # show :: Alt f a -> String # showList :: [Alt f a] -> ShowS #
(Show1 f, Show a) => Show (IdentityT f a)
Instance details Defined in Control.Monad.Trans.Identity Methods showsPrec :: Int -> IdentityT f a -> ShowS # show :: IdentityT f a -> String # showList :: [IdentityT f a] -> ShowS #
(Show w, Show1 m, Show a) => Show (WriterT w m a)
Instance details Defined in Control.Monad.Trans.Writer.Strict Methods showsPrec :: Int -> WriterT w m a -> ShowS # show :: WriterT w m a -> String # showList :: [WriterT w m a] -> ShowS #
(Show w, Show1 m, Show a) => Show (WriterT w m a)
Instance details Defined in Control.Monad.Trans.Writer.Lazy Methods showsPrec :: Int -> WriterT w m a -> ShowS # show :: WriterT w m a -> String # showList :: [WriterT w m a] -> ShowS #
(Show e, Show1 m, Show a) => Show (ExceptT e m a)
Instance details Defined in Control.Monad.Trans.Except Methods showsPrec :: Int -> ExceptT e m a -> ShowS # show :: ExceptT e m a -> String # showList :: [ExceptT e m a] -> ShowS #
(Show e, Show1 m, Show a) => Show (ErrorT e m a)
Instance details Defined in Control.Monad.Trans.Error Methods showsPrec :: Int -> ErrorT e m a -> ShowS # show :: ErrorT e m a -> String # showList :: [ErrorT e m a] -> ShowS #
Show b => Show (Tagged s b)
Instance details Defined in Data.Tagged Methods showsPrec :: Int -> Tagged s b -> ShowS # show :: Tagged s b -> String # showList :: [Tagged s b] -> ShowS #
(Show1 f, Show1 g, Show a) => Show (These1 f g a)
Instance details Defined in Data.Functor.These Methods showsPrec :: Int -> These1 f g a -> ShowS # show :: These1 f g a -> String # showList :: [These1 f g a] -> ShowS #
Show c => Show (K1 i c p)	Since: base-4.7.0.0
Instance details Defined in GHC.Generics Methods showsPrec :: Int -> K1 i c p -> ShowS # show :: K1 i c p -> String # showList :: [K1 i c p] -> ShowS #
(Show (f p), Show (g p)) => Show ((f :+: g) p)	Since: base-4.7.0.0
Instance details Defined in GHC.Generics Methods showsPrec :: Int -> (f :+: g) p -> ShowS # show :: (f :+: g) p -> String # showList :: [(f :+: g) p] -> ShowS #
(Show (f p), Show (g p)) => Show ((f :*: g) p)	Since: base-4.7.0.0
Instance details Defined in GHC.Generics Methods showsPrec :: Int -> (f :: g) p -> ShowS # show :: (f :: g) p -> String # showList :: [(f :*: g) p] -> ShowS #
(Show a, Show b, Show c, Show d) => Show (a, b, c, d)	Since: base-2.1
Instance details Defined in GHC.Show Methods showsPrec :: Int -> (a, b, c, d) -> ShowS # show :: (a, b, c, d) -> String # showList :: [(a, b, c, d)] -> ShowS #
(Show1 f, Show1 g, Show a) => Show (Product f g a)	Since: base-4.9.0.0
Instance details Defined in Data.Functor.Product Methods showsPrec :: Int -> Product f g a -> ShowS # show :: Product f g a -> String # showList :: [Product f g a] -> ShowS #
(Show1 f, Show1 g, Show a) => Show (Sum f g a)	Since: base-4.9.0.0
Instance details Defined in Data.Functor.Sum Methods showsPrec :: Int -> Sum f g a -> ShowS # show :: Sum f g a -> String # showList :: [Sum f g a] -> ShowS #
Show (f p) => Show (M1 i c f p)	Since: base-4.7.0.0
Instance details Defined in GHC.Generics Methods showsPrec :: Int -> M1 i c f p -> ShowS # show :: M1 i c f p -> String # showList :: [M1 i c f p] -> ShowS #
Show (f (g p)) => Show ((f :.: g) p)	Since: base-4.7.0.0
Instance details Defined in GHC.Generics Methods showsPrec :: Int -> (f :.: g) p -> ShowS # show :: (f :.: g) p -> String # showList :: [(f :.: g) p] -> ShowS #
(Show a, Show b, Show c, Show d, Show e) => Show (a, b, c, d, e)	Since: base-2.1
Instance details Defined in GHC.Show Methods showsPrec :: Int -> (a, b, c, d, e) -> ShowS # show :: (a, b, c, d, e) -> String # showList :: [(a, b, c, d, e)] -> ShowS #
(Show1 f, Show1 g, Show a) => Show (Compose f g a)	Since: base-4.9.0.0
Instance details Defined in Data.Functor.Compose Methods showsPrec :: Int -> Compose f g a -> ShowS # show :: Compose f g a -> String # showList :: [Compose f g a] -> ShowS #
Show (p b a) => Show (Flip p a b)
Instance details Defined in Data.Bifunctor.Flip Methods showsPrec :: Int -> Flip p a b -> ShowS # show :: Flip p a b -> String # showList :: [Flip p a b] -> ShowS #
(Show a, Show b, Show c, Show d, Show e, Show f) => Show (a, b, c, d, e, f)	Since: base-2.1
Instance details Defined in GHC.Show Methods showsPrec :: Int -> (a, b, c, d, e, f) -> ShowS # show :: (a, b, c, d, e, f) -> String # showList :: [(a, b, c, d, e, f)] -> ShowS #
(Show (p a b), Show (q a b)) => Show (Sum p q a b)
Instance details Defined in Data.Bifunctor.Sum Methods showsPrec :: Int -> Sum p q a b -> ShowS # show :: Sum p q a b -> String # showList :: [Sum p q a b] -> ShowS #
(Show (f a b), Show (g a b)) => Show (Product f g a b)
Instance details Defined in Data.Bifunctor.Product Methods showsPrec :: Int -> Product f g a b -> ShowS # show :: Product f g a b -> String # showList :: [Product f g a b] -> ShowS #
(Show a, Show b, Show c, Show d, Show e, Show f, Show g) => Show (a, b, c, d, e, f, g)	Since: base-2.1
Instance details Defined in GHC.Show Methods showsPrec :: Int -> (a, b, c, d, e, f, g) -> ShowS # show :: (a, b, c, d, e, f, g) -> String # showList :: [(a, b, c, d, e, f, g)] -> ShowS #
Show (f (p a b)) => Show (Tannen f p a b)
Instance details Defined in Data.Bifunctor.Tannen Methods showsPrec :: Int -> Tannen f p a b -> ShowS # show :: Tannen f p a b -> String # showList :: [Tannen f p a b] -> ShowS #
(Show a, Show b, Show c, Show d, Show e, Show f, Show g, Show h) => Show (a, b, c, d, e, f, g, h)	Since: base-2.1
Instance details Defined in GHC.Show Methods showsPrec :: Int -> (a, b, c, d, e, f, g, h) -> ShowS # show :: (a, b, c, d, e, f, g, h) -> String # showList :: [(a, b, c, d, e, f, g, h)] -> ShowS #
(Show a, Show b, Show c, Show d, Show e, Show f, Show g, Show h, Show i) => Show (a, b, c, d, e, f, g, h, i)	Since: base-2.1
Instance details Defined in GHC.Show Methods showsPrec :: Int -> (a, b, c, d, e, f, g, h, i) -> ShowS # show :: (a, b, c, d, e, f, g, h, i) -> String # showList :: [(a, b, c, d, e, f, g, h, i)] -> ShowS #
Show (p (f a) (g b)) => Show (Biff p f g a b)
Instance details Defined in Data.Bifunctor.Biff Methods showsPrec :: Int -> Biff p f g a b -> ShowS # show :: Biff p f g a b -> String # showList :: [Biff p f g a b] -> ShowS #
(Show a, Show b, Show c, Show d, Show e, Show f, Show g, Show h, Show i, Show j) => Show (a, b, c, d, e, f, g, h, i, j)	Since: base-2.1
Instance details Defined in GHC.Show Methods showsPrec :: Int -> (a, b, c, d, e, f, g, h, i, j) -> ShowS # show :: (a, b, c, d, e, f, g, h, i, j) -> String # showList :: [(a, b, c, d, e, f, g, h, i, j)] -> ShowS #
(Show a, Show b, Show c, Show d, Show e, Show f, Show g, Show h, Show i, Show j, Show k) => Show (a, b, c, d, e, f, g, h, i, j, k)	Since: base-2.1
Instance details Defined in GHC.Show Methods showsPrec :: Int -> (a, b, c, d, e, f, g, h, i, j, k) -> ShowS # show :: (a, b, c, d, e, f, g, h, i, j, k) -> String # showList :: [(a, b, c, d, e, f, g, h, i, j, k)] -> ShowS #
(Show a, Show b, Show c, Show d, Show e, Show f, Show g, Show h, Show i, Show j, Show k, Show l) => Show (a, b, c, d, e, f, g, h, i, j, k, l)	Since: base-2.1
Instance details Defined in GHC.Show Methods showsPrec :: Int -> (a, b, c, d, e, f, g, h, i, j, k, l) -> ShowS # show :: (a, b, c, d, e, f, g, h, i, j, k, l) -> String # showList :: [(a, b, c, d, e, f, g, h, i, j, k, l)] -> ShowS #
(Show a, Show b, Show c, Show d, Show e, Show f, Show g, Show h, Show i, Show j, Show k, Show l, Show m) => Show (a, b, c, d, e, f, g, h, i, j, k, l, m)	Since: base-2.1
Instance details Defined in GHC.Show Methods showsPrec :: Int -> (a, b, c, d, e, f, g, h, i, j, k, l, m) -> ShowS # show :: (a, b, c, d, e, f, g, h, i, j, k, l, m) -> String # showList :: [(a, b, c, d, e, f, g, h, i, j, k, l, m)] -> ShowS #
(Show a, Show b, Show c, Show d, Show e, Show f, Show g, Show h, Show i, Show j, Show k, Show l, Show m, Show n) => Show (a, b, c, d, e, f, g, h, i, j, k, l, m, n)	Since: base-2.1
Instance details Defined in GHC.Show Methods showsPrec :: Int -> (a, b, c, d, e, f, g, h, i, j, k, l, m, n) -> ShowS # show :: (a, b, c, d, e, f, g, h, i, j, k, l, m, n) -> String # showList :: [(a, b, c, d, e, f, g, h, i, j, k, l, m, n)] -> ShowS #
(Show a, Show b, Show c, Show d, Show e, Show f, Show g, Show h, Show i, Show j, Show k, Show l, Show m, Show n, Show o) => Show (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o)	Since: base-2.1
Instance details Defined in GHC.Show Methods showsPrec :: Int -> (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o) -> ShowS # show :: (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o) -> String # showList :: [(a, b, c, d, e, f, g, h, i, j, k, l, m, n, o)] -> ShowS #

class Monad m => MonadFail (m :: Type -> Type) where #

When a value is bound in do-notation, the pattern on the left hand side of <- might not match. In this case, this class provides a function to recover.

A Monad without a MonadFail instance may only be used in conjunction with pattern that always match, such as newtypes, tuples, data types with only a single data constructor, and irrefutable patterns (~pat).

Instances of MonadFail should satisfy the following law: fail s should be a left zero for >>=,

fail s >>= f  =  fail s

If your Monad is also MonadPlus, a popular definition is

fail _ = mzero

Since: base-4.9.0.0

Methods

fail :: String -> m a #

Instances

Instances details

MonadFail []	Since: base-4.9.0.0
Instance details Defined in Control.Monad.Fail Methods fail :: String -> [a] #
MonadFail Maybe	Since: base-4.9.0.0
Instance details Defined in Control.Monad.Fail Methods fail :: String -> Maybe a #
MonadFail IO	Since: base-4.9.0.0
Instance details Defined in Control.Monad.Fail Methods fail :: String -> IO a #
MonadFail Q
Instance details Defined in Language.Haskell.TH.Syntax Methods fail :: String -> Q a #
MonadFail IResult
Instance details Defined in Data.Aeson.Types.Internal Methods fail :: String -> IResult a #
MonadFail Result
Instance details Defined in Data.Aeson.Types.Internal Methods fail :: String -> Result a #
MonadFail Parser
Instance details Defined in Data.Aeson.Types.Internal Methods fail :: String -> Parser a #
MonadFail ReadPrec	Since: base-4.9.0.0
Instance details Defined in Text.ParserCombinators.ReadPrec Methods fail :: String -> ReadPrec a #
MonadFail ReadP	Since: base-4.9.0.0
Instance details Defined in Text.ParserCombinators.ReadP Methods fail :: String -> ReadP a #
MonadFail DList
Instance details Defined in Data.DList.Internal Methods fail :: String -> DList a #
MonadFail SmallArray
Instance details Defined in Data.Primitive.SmallArray Methods fail :: String -> SmallArray a #
MonadFail Array
Instance details Defined in Data.Primitive.Array Methods fail :: String -> Array a #
MonadFail Result
Instance details Defined in Text.Hamlet.Parse Methods fail :: String -> Result a #
MonadFail Vector	Since: vector-0.12.1.0
Instance details Defined in Data.Vector Methods fail :: String -> Vector a #
MonadFail Stream
Instance details Defined in Codec.Compression.Zlib.Stream Methods fail :: String -> Stream a #
MonadFail P	Since: base-4.9.0.0
Instance details Defined in Text.ParserCombinators.ReadP Methods fail :: String -> P a #
MonadFail (ST s)	Since: base-4.11.0.0
Instance details Defined in GHC.ST Methods fail :: String -> ST s a #
MonadFail (Parser i)
Instance details Defined in Data.Attoparsec.Internal.Types Methods fail :: String -> Parser i a #
Monad m => MonadFail (MaybeT m)
Instance details Defined in Control.Monad.Trans.Maybe Methods fail :: String -> MaybeT m a #
MonadFail m => MonadFail (ResourceT m)	Since: resourcet-1.2.2
Instance details Defined in Control.Monad.Trans.Resource.Internal Methods fail :: String -> ResourceT m a #
Monad m => MonadFail (ListT m)
Instance details Defined in Control.Monad.Trans.List Methods fail :: String -> ListT m a #
MonadFail m => MonadFail (NoLoggingT m)	Since: monad-logger-0.3.30
Instance details Defined in Control.Monad.Logger Methods fail :: String -> NoLoggingT m a #
MonadFail m => MonadFail (LoggingT m)	Since: monad-logger-0.3.30
Instance details Defined in Control.Monad.Logger Methods fail :: String -> LoggingT m a #
MonadFail f => MonadFail (Ap f)	Since: base-4.12.0.0
Instance details Defined in Data.Monoid Methods fail :: String -> Ap f a #
MonadFail m => MonadFail (IdentityT m)
Instance details Defined in Control.Monad.Trans.Identity Methods fail :: String -> IdentityT m a #
(Monoid w, MonadFail m) => MonadFail (WriterT w m)
Instance details Defined in Control.Monad.Trans.Writer.Strict Methods fail :: String -> WriterT w m a #
(Monoid w, MonadFail m) => MonadFail (WriterT w m)
Instance details Defined in Control.Monad.Trans.Writer.Lazy Methods fail :: String -> WriterT w m a #
MonadFail m => MonadFail (StateT s m)
Instance details Defined in Control.Monad.Trans.State.Strict Methods fail :: String -> StateT s m a #
MonadFail m => MonadFail (StateT s m)
Instance details Defined in Control.Monad.Trans.State.Lazy Methods fail :: String -> StateT s m a #
MonadFail m => MonadFail (ReaderT r m)
Instance details Defined in Control.Monad.Trans.Reader Methods fail :: String -> ReaderT r m a #
MonadFail m => MonadFail (ExceptT e m)
Instance details Defined in Control.Monad.Trans.Except Methods fail :: String -> ExceptT e m a #
(Monad m, Error e) => MonadFail (ErrorT e m)
Instance details Defined in Control.Monad.Trans.Error Methods fail :: String -> ErrorT e m a #
MonadFail m => MonadFail (ConduitT i o m)	Since: conduit-1.3.1
Instance details Defined in Data.Conduit.Internal.Conduit Methods fail :: String -> ConduitT i o m a #
Stream s => MonadFail (ParsecT e s m)
Instance details Defined in Text.Megaparsec.Internal Methods fail :: String -> ParsecT e s m a #
(Monoid w, MonadFail m) => MonadFail (RWST r w s m)
Instance details Defined in Control.Monad.Trans.RWS.Strict Methods fail :: String -> RWST r w s m a #
(Monoid w, MonadFail m) => MonadFail (RWST r w s m)
Instance details Defined in Control.Monad.Trans.RWS.Lazy Methods fail :: String -> RWST r w s m a #

class Functor f => Applicative (f :: Type -> Type) where #

A functor with application, providing operations to

embed pure expressions (pure), and
sequence computations and combine their results (<*> and liftA2).

A minimal complete definition must include implementations of pure and of either <*> or liftA2. If it defines both, then they must behave the same as their default definitions:

(<*>) = liftA2 id

liftA2 f x y = f <$> x <*> y

Further, any definition must satisfy the following:

Identity

pure id <*> v = v

Composition

pure (.) <*> u <*> v <*> w = u <*> (v <*> w)

Homomorphism

pure f <*> pure x = pure (f x)

Interchange

u <*> pure y = pure ($ y) <*> u

The other methods have the following default definitions, which may be overridden with equivalent specialized implementations:

```
u *> v = (id <$ u) <*> v
```
```
u <* v = liftA2 const u v
```

As a consequence of these laws, the Functor instance for f will satisfy

```
fmap f x = pure f <*> x
```

It may be useful to note that supposing

forall x y. p (q x y) = f x . g y

it follows from the above that

liftA2 p (liftA2 q u v) = liftA2 f u . liftA2 g v

If f is also a Monad, it should satisfy

```
pure = return
```

m1 <*> m2 = m1 >>= (x1 -> m2 >>= (x2 -> return (x1 x2)))

```
(*>) = (>>)
```

(which implies that pure and <*> satisfy the applicative functor laws).

Minimal complete definition

pure, ((<*>) | liftA2)

Methods

pure :: a -> f a #

Lift a value.

(<*>) :: f (a -> b) -> f a -> f b infixl 4 #

Sequential application.

A few functors support an implementation of <*> that is more efficient than the default one.

Using ApplicativeDo: 'fs <*> as' can be understood as the do expression

do f <- fs
   a <- as
   pure (f a)

(*>) :: f a -> f b -> f b infixl 4 #

Sequence actions, discarding the value of the first argument.

'as *> bs' can be understood as the do expression

do as
   bs

This is a tad complicated for our ApplicativeDo extension which will give it a Monad constraint. For an Applicative constraint we write it of the form

do _ <- as
   b <- bs
   pure b

(<*) :: f a -> f b -> f a infixl 4 #

Sequence actions, discarding the value of the second argument.

Using ApplicativeDo: 'as <* bs' can be understood as the do expression

do a <- as
   bs
   pure a

Instances

Instances details

Applicative []	Since: base-2.1
Instance details Defined in GHC.Base Methods pure :: a -> [a] # (<>) :: [a -> b] -> [a] -> [b] # liftA2 :: (a -> b -> c) -> [a] -> [b] -> [c] # (>) :: [a] -> [b] -> [b] # (<*) :: [a] -> [b] -> [a] #
Applicative Maybe	Since: base-2.1
Instance details Defined in GHC.Base Methods pure :: a -> Maybe a # (<>) :: Maybe (a -> b) -> Maybe a -> Maybe b # liftA2 :: (a -> b -> c) -> Maybe a -> Maybe b -> Maybe c # (>) :: Maybe a -> Maybe b -> Maybe b # (<*) :: Maybe a -> Maybe b -> Maybe a #
Applicative IO	Since: base-2.1
Instance details Defined in GHC.Base Methods pure :: a -> IO a # (<>) :: IO (a -> b) -> IO a -> IO b # liftA2 :: (a -> b -> c) -> IO a -> IO b -> IO c # (>) :: IO a -> IO b -> IO b # (<*) :: IO a -> IO b -> IO a #
Applicative Par1	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Methods pure :: a -> Par1 a # (<>) :: Par1 (a -> b) -> Par1 a -> Par1 b # liftA2 :: (a -> b -> c) -> Par1 a -> Par1 b -> Par1 c # (>) :: Par1 a -> Par1 b -> Par1 b # (<*) :: Par1 a -> Par1 b -> Par1 a #
Applicative Q
Instance details Defined in Language.Haskell.TH.Syntax Methods pure :: a -> Q a # (<>) :: Q (a -> b) -> Q a -> Q b # liftA2 :: (a -> b -> c) -> Q a -> Q b -> Q c # (>) :: Q a -> Q b -> Q b # (<*) :: Q a -> Q b -> Q a #
Applicative IResult
Instance details Defined in Data.Aeson.Types.Internal Methods pure :: a -> IResult a # (<>) :: IResult (a -> b) -> IResult a -> IResult b # liftA2 :: (a -> b -> c) -> IResult a -> IResult b -> IResult c # (>) :: IResult a -> IResult b -> IResult b # (<*) :: IResult a -> IResult b -> IResult a #
Applicative Result
Instance details Defined in Data.Aeson.Types.Internal Methods pure :: a -> Result a # (<>) :: Result (a -> b) -> Result a -> Result b # liftA2 :: (a -> b -> c) -> Result a -> Result b -> Result c # (>) :: Result a -> Result b -> Result b # (<*) :: Result a -> Result b -> Result a #
Applicative Parser
Instance details Defined in Data.Aeson.Types.Internal Methods pure :: a -> Parser a # (<>) :: Parser (a -> b) -> Parser a -> Parser b # liftA2 :: (a -> b -> c) -> Parser a -> Parser b -> Parser c # (>) :: Parser a -> Parser b -> Parser b # (<*) :: Parser a -> Parser b -> Parser a #
Applicative Complex	Since: base-4.9.0.0
Instance details Defined in Data.Complex Methods pure :: a -> Complex a # (<>) :: Complex (a -> b) -> Complex a -> Complex b # liftA2 :: (a -> b -> c) -> Complex a -> Complex b -> Complex c # (>) :: Complex a -> Complex b -> Complex b # (<*) :: Complex a -> Complex b -> Complex a #
Applicative Min	Since: base-4.9.0.0
Instance details Defined in Data.Semigroup Methods pure :: a -> Min a # (<>) :: Min (a -> b) -> Min a -> Min b # liftA2 :: (a -> b -> c) -> Min a -> Min b -> Min c # (>) :: Min a -> Min b -> Min b # (<*) :: Min a -> Min b -> Min a #
Applicative Max	Since: base-4.9.0.0
Instance details Defined in Data.Semigroup Methods pure :: a -> Max a # (<>) :: Max (a -> b) -> Max a -> Max b # liftA2 :: (a -> b -> c) -> Max a -> Max b -> Max c # (>) :: Max a -> Max b -> Max b # (<*) :: Max a -> Max b -> Max a #
Applicative First	Since: base-4.9.0.0
Instance details Defined in Data.Semigroup Methods pure :: a -> First a # (<>) :: First (a -> b) -> First a -> First b # liftA2 :: (a -> b -> c) -> First a -> First b -> First c # (>) :: First a -> First b -> First b # (<*) :: First a -> First b -> First a #
Applicative Last	Since: base-4.9.0.0
Instance details Defined in Data.Semigroup Methods pure :: a -> Last a # (<>) :: Last (a -> b) -> Last a -> Last b # liftA2 :: (a -> b -> c) -> Last a -> Last b -> Last c # (>) :: Last a -> Last b -> Last b # (<*) :: Last a -> Last b -> Last a #
Applicative Option	Since: base-4.9.0.0
Instance details Defined in Data.Semigroup Methods pure :: a -> Option a # (<>) :: Option (a -> b) -> Option a -> Option b # liftA2 :: (a -> b -> c) -> Option a -> Option b -> Option c # (>) :: Option a -> Option b -> Option b # (<*) :: Option a -> Option b -> Option a #
Applicative ZipList	f <$> ZipList xs1 <> ... <> ZipList xsN = ZipList (zipWithN f xs1 ... xsN) where `zipWithN` refers to the `zipWith` function of the appropriate arity (`zipWith`, `zipWith3`, `zipWith4`, ...). For example: (\a b c -> stimes c [a, b]) <$> ZipList "abcd" <> ZipList "567" <> ZipList [1..] = ZipList (zipWith3 (\a b c -> stimes c [a, b]) "abcd" "567" [1..]) = ZipList {getZipList = ["a5","b6b6","c7c7c7"]} Since: base-2.1
Instance details Defined in Control.Applicative Methods pure :: a -> ZipList a # (<>) :: ZipList (a -> b) -> ZipList a -> ZipList b # liftA2 :: (a -> b -> c) -> ZipList a -> ZipList b -> ZipList c # (>) :: ZipList a -> ZipList b -> ZipList b # (<*) :: ZipList a -> ZipList b -> ZipList a #
Applicative Identity	Since: base-4.8.0.0
Instance details Defined in Data.Functor.Identity Methods pure :: a -> Identity a # (<>) :: Identity (a -> b) -> Identity a -> Identity b # liftA2 :: (a -> b -> c) -> Identity a -> Identity b -> Identity c # (>) :: Identity a -> Identity b -> Identity b # (<*) :: Identity a -> Identity b -> Identity a #
Applicative First	Since: base-4.8.0.0
Instance details Defined in Data.Monoid Methods pure :: a -> First a # (<>) :: First (a -> b) -> First a -> First b # liftA2 :: (a -> b -> c) -> First a -> First b -> First c # (>) :: First a -> First b -> First b # (<*) :: First a -> First b -> First a #
Applicative Last	Since: base-4.8.0.0
Instance details Defined in Data.Monoid Methods pure :: a -> Last a # (<>) :: Last (a -> b) -> Last a -> Last b # liftA2 :: (a -> b -> c) -> Last a -> Last b -> Last c # (>) :: Last a -> Last b -> Last b # (<*) :: Last a -> Last b -> Last a #
Applicative Dual	Since: base-4.8.0.0
Instance details Defined in Data.Semigroup.Internal Methods pure :: a -> Dual a # (<>) :: Dual (a -> b) -> Dual a -> Dual b # liftA2 :: (a -> b -> c) -> Dual a -> Dual b -> Dual c # (>) :: Dual a -> Dual b -> Dual b # (<*) :: Dual a -> Dual b -> Dual a #
Applicative Sum	Since: base-4.8.0.0
Instance details Defined in Data.Semigroup.Internal Methods pure :: a -> Sum a # (<>) :: Sum (a -> b) -> Sum a -> Sum b # liftA2 :: (a -> b -> c) -> Sum a -> Sum b -> Sum c # (>) :: Sum a -> Sum b -> Sum b # (<*) :: Sum a -> Sum b -> Sum a #
Applicative Product	Since: base-4.8.0.0
Instance details Defined in Data.Semigroup.Internal Methods pure :: a -> Product a # (<>) :: Product (a -> b) -> Product a -> Product b # liftA2 :: (a -> b -> c) -> Product a -> Product b -> Product c # (>) :: Product a -> Product b -> Product b # (<*) :: Product a -> Product b -> Product a #
Applicative Down	Since: base-4.11.0.0
Instance details Defined in Data.Ord Methods pure :: a -> Down a # (<>) :: Down (a -> b) -> Down a -> Down b # liftA2 :: (a -> b -> c) -> Down a -> Down b -> Down c # (>) :: Down a -> Down b -> Down b # (<*) :: Down a -> Down b -> Down a #
Applicative ReadPrec	Since: base-4.6.0.0
Instance details Defined in Text.ParserCombinators.ReadPrec Methods pure :: a -> ReadPrec a # (<>) :: ReadPrec (a -> b) -> ReadPrec a -> ReadPrec b # liftA2 :: (a -> b -> c) -> ReadPrec a -> ReadPrec b -> ReadPrec c # (>) :: ReadPrec a -> ReadPrec b -> ReadPrec b # (<*) :: ReadPrec a -> ReadPrec b -> ReadPrec a #
Applicative ReadP	Since: base-4.6.0.0
Instance details Defined in Text.ParserCombinators.ReadP Methods pure :: a -> ReadP a # (<>) :: ReadP (a -> b) -> ReadP a -> ReadP b # liftA2 :: (a -> b -> c) -> ReadP a -> ReadP b -> ReadP c # (>) :: ReadP a -> ReadP b -> ReadP b # (<*) :: ReadP a -> ReadP b -> ReadP a #
Applicative NonEmpty	Since: base-4.9.0.0
Instance details Defined in GHC.Base Methods pure :: a -> NonEmpty a # (<>) :: NonEmpty (a -> b) -> NonEmpty a -> NonEmpty b # liftA2 :: (a -> b -> c) -> NonEmpty a -> NonEmpty b -> NonEmpty c # (>) :: NonEmpty a -> NonEmpty b -> NonEmpty b # (<*) :: NonEmpty a -> NonEmpty b -> NonEmpty a #
Applicative MarkupM
Instance details Defined in Text.Blaze.Internal Methods pure :: a -> MarkupM a # (<>) :: MarkupM (a -> b) -> MarkupM a -> MarkupM b # liftA2 :: (a -> b -> c) -> MarkupM a -> MarkupM b -> MarkupM c # (>) :: MarkupM a -> MarkupM b -> MarkupM b # (<*) :: MarkupM a -> MarkupM b -> MarkupM a #
Applicative Put
Instance details Defined in Data.ByteString.Builder.Internal Methods pure :: a -> Put a # (<>) :: Put (a -> b) -> Put a -> Put b # liftA2 :: (a -> b -> c) -> Put a -> Put b -> Put c # (>) :: Put a -> Put b -> Put b # (<*) :: Put a -> Put b -> Put a #
Applicative Tree
Instance details Defined in Data.Tree Methods pure :: a -> Tree a # (<>) :: Tree (a -> b) -> Tree a -> Tree b # liftA2 :: (a -> b -> c) -> Tree a -> Tree b -> Tree c # (>) :: Tree a -> Tree b -> Tree b # (<*) :: Tree a -> Tree b -> Tree a #
Applicative Seq	Since: containers-0.5.4
Instance details Defined in Data.Sequence.Internal Methods pure :: a -> Seq a # (<>) :: Seq (a -> b) -> Seq a -> Seq b # liftA2 :: (a -> b -> c) -> Seq a -> Seq b -> Seq c # (>) :: Seq a -> Seq b -> Seq b # (<*) :: Seq a -> Seq b -> Seq a #
Applicative CryptoFailable
Instance details Defined in Crypto.Error.Types Methods pure :: a -> CryptoFailable a # (<>) :: CryptoFailable (a -> b) -> CryptoFailable a -> CryptoFailable b # liftA2 :: (a -> b -> c) -> CryptoFailable a -> CryptoFailable b -> CryptoFailable c # (>) :: CryptoFailable a -> CryptoFailable b -> CryptoFailable b # (<*) :: CryptoFailable a -> CryptoFailable b -> CryptoFailable a #
Applicative DNonEmpty
Instance details Defined in Data.DList.DNonEmpty.Internal Methods pure :: a -> DNonEmpty a # (<>) :: DNonEmpty (a -> b) -> DNonEmpty a -> DNonEmpty b # liftA2 :: (a -> b -> c) -> DNonEmpty a -> DNonEmpty b -> DNonEmpty c # (>) :: DNonEmpty a -> DNonEmpty b -> DNonEmpty b # (<*) :: DNonEmpty a -> DNonEmpty b -> DNonEmpty a #
Applicative DList
Instance details Defined in Data.DList.Internal Methods pure :: a -> DList a # (<>) :: DList (a -> b) -> DList a -> DList b # liftA2 :: (a -> b -> c) -> DList a -> DList b -> DList c # (>) :: DList a -> DList b -> DList b # (<*) :: DList a -> DList b -> DList a #
Applicative Root
Instance details Defined in Numeric.RootFinding Methods pure :: a -> Root a # (<>) :: Root (a -> b) -> Root a -> Root b # liftA2 :: (a -> b -> c) -> Root a -> Root b -> Root c # (>) :: Root a -> Root b -> Root b # (<*) :: Root a -> Root b -> Root a #
Applicative SmallArray
Instance details Defined in Data.Primitive.SmallArray Methods pure :: a -> SmallArray a # (<>) :: SmallArray (a -> b) -> SmallArray a -> SmallArray b # liftA2 :: (a -> b -> c) -> SmallArray a -> SmallArray b -> SmallArray c # (>) :: SmallArray a -> SmallArray b -> SmallArray b # (<*) :: SmallArray a -> SmallArray b -> SmallArray a #
Applicative Array
Instance details Defined in Data.Primitive.Array Methods pure :: a -> Array a # (<>) :: Array (a -> b) -> Array a -> Array b # liftA2 :: (a -> b -> c) -> Array a -> Array b -> Array c # (>) :: Array a -> Array b -> Array b # (<*) :: Array a -> Array b -> Array a #
Applicative Result
Instance details Defined in Text.Hamlet.Parse Methods pure :: a -> Result a # (<>) :: Result (a -> b) -> Result a -> Result b # liftA2 :: (a -> b -> c) -> Result a -> Result b -> Result c # (>) :: Result a -> Result b -> Result b # (<*) :: Result a -> Result b -> Result a #
Applicative Flat
Instance details Defined in UnliftIO.Internals.Async Methods pure :: a -> Flat a # (<>) :: Flat (a -> b) -> Flat a -> Flat b # liftA2 :: (a -> b -> c) -> Flat a -> Flat b -> Flat c # (>) :: Flat a -> Flat b -> Flat b # (<*) :: Flat a -> Flat b -> Flat a #
Applicative FlatApp
Instance details Defined in UnliftIO.Internals.Async Methods pure :: a -> FlatApp a # (<>) :: FlatApp (a -> b) -> FlatApp a -> FlatApp b # liftA2 :: (a -> b -> c) -> FlatApp a -> FlatApp b -> FlatApp c # (>) :: FlatApp a -> FlatApp b -> FlatApp b # (<*) :: FlatApp a -> FlatApp b -> FlatApp a #
Applicative Vector
Instance details Defined in Data.Vector Methods pure :: a -> Vector a # (<>) :: Vector (a -> b) -> Vector a -> Vector b # liftA2 :: (a -> b -> c) -> Vector a -> Vector b -> Vector c # (>) :: Vector a -> Vector b -> Vector b # (<*) :: Vector a -> Vector b -> Vector a #
Applicative Id
Instance details Defined in Data.Vector.Fusion.Util Methods pure :: a -> Id a # (<>) :: Id (a -> b) -> Id a -> Id b # liftA2 :: (a -> b -> c) -> Id a -> Id b -> Id c # (>) :: Id a -> Id b -> Id b # (<*) :: Id a -> Id b -> Id a #
Applicative Box
Instance details Defined in Data.Vector.Fusion.Util Methods pure :: a -> Box a # (<>) :: Box (a -> b) -> Box a -> Box b # liftA2 :: (a -> b -> c) -> Box a -> Box b -> Box c # (>) :: Box a -> Box b -> Box b # (<*) :: Box a -> Box b -> Box a #
Applicative FormResult
Instance details Defined in Yesod.Form.Types Methods pure :: a -> FormResult a # (<>) :: FormResult (a -> b) -> FormResult a -> FormResult b # liftA2 :: (a -> b -> c) -> FormResult a -> FormResult b -> FormResult c # (>) :: FormResult a -> FormResult b -> FormResult b # (<*) :: FormResult a -> FormResult b -> FormResult a #
Applicative Stream
Instance details Defined in Codec.Compression.Zlib.Stream Methods pure :: a -> Stream a # (<>) :: Stream (a -> b) -> Stream a -> Stream b # liftA2 :: (a -> b -> c) -> Stream a -> Stream b -> Stream c # (>) :: Stream a -> Stream b -> Stream b # (<*) :: Stream a -> Stream b -> Stream a #
Applicative P	Since: base-4.5.0.0
Instance details Defined in Text.ParserCombinators.ReadP Methods pure :: a -> P a # (<>) :: P (a -> b) -> P a -> P b # liftA2 :: (a -> b -> c) -> P a -> P b -> P c # (>) :: P a -> P b -> P b # (<*) :: P a -> P b -> P a #
Applicative (Either e)	Since: base-3.0
Instance details Defined in Data.Either Methods pure :: a -> Either e a # (<>) :: Either e (a -> b) -> Either e a -> Either e b # liftA2 :: (a -> b -> c) -> Either e a -> Either e b -> Either e c # (>) :: Either e a -> Either e b -> Either e b # (<*) :: Either e a -> Either e b -> Either e a #
Applicative (U1 :: Type -> Type)	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Methods pure :: a -> U1 a # (<>) :: U1 (a -> b) -> U1 a -> U1 b # liftA2 :: (a -> b -> c) -> U1 a -> U1 b -> U1 c # (>) :: U1 a -> U1 b -> U1 b # (<*) :: U1 a -> U1 b -> U1 a #
Monoid a => Applicative ((,) a)	For tuples, the `Monoid` constraint on `a` determines how the first values merge. For example, `String`s concatenate: ("hello ", (+15)) <> ("world!", 2002) ("hello world!",2017) Since: base-2.1*
Instance details Defined in GHC.Base Methods pure :: a0 -> (a, a0) # (<>) :: (a, a0 -> b) -> (a, a0) -> (a, b) # liftA2 :: (a0 -> b -> c) -> (a, a0) -> (a, b) -> (a, c) # (>) :: (a, a0) -> (a, b) -> (a, b) # (<*) :: (a, a0) -> (a, b) -> (a, a0) #
Applicative (ST s)	Since: base-4.4.0.0
Instance details Defined in GHC.ST Methods pure :: a -> ST s a # (<>) :: ST s (a -> b) -> ST s a -> ST s b # liftA2 :: (a -> b -> c) -> ST s a -> ST s b -> ST s c # (>) :: ST s a -> ST s b -> ST s b # (<*) :: ST s a -> ST s b -> ST s a #
Applicative (Parser i)
Instance details Defined in Data.Attoparsec.Internal.Types Methods pure :: a -> Parser i a # (<>) :: Parser i (a -> b) -> Parser i a -> Parser i b # liftA2 :: (a -> b -> c) -> Parser i a -> Parser i b -> Parser i c # (>) :: Parser i a -> Parser i b -> Parser i b # (<*) :: Parser i a -> Parser i b -> Parser i a #
Monad m => Applicative (WrappedMonad m)	Since: base-2.1
Instance details Defined in Control.Applicative Methods pure :: a -> WrappedMonad m a # (<>) :: WrappedMonad m (a -> b) -> WrappedMonad m a -> WrappedMonad m b # liftA2 :: (a -> b -> c) -> WrappedMonad m a -> WrappedMonad m b -> WrappedMonad m c # (>) :: WrappedMonad m a -> WrappedMonad m b -> WrappedMonad m b # (<*) :: WrappedMonad m a -> WrappedMonad m b -> WrappedMonad m a #
Arrow a => Applicative (ArrowMonad a)	Since: base-4.6.0.0
Instance details Defined in Control.Arrow Methods pure :: a0 -> ArrowMonad a a0 # (<>) :: ArrowMonad a (a0 -> b) -> ArrowMonad a a0 -> ArrowMonad a b # liftA2 :: (a0 -> b -> c) -> ArrowMonad a a0 -> ArrowMonad a b -> ArrowMonad a c # (>) :: ArrowMonad a a0 -> ArrowMonad a b -> ArrowMonad a b # (<*) :: ArrowMonad a a0 -> ArrowMonad a b -> ArrowMonad a a0 #
Applicative (Proxy :: Type -> Type)	Since: base-4.7.0.0
Instance details Defined in Data.Proxy Methods pure :: a -> Proxy a # (<>) :: Proxy (a -> b) -> Proxy a -> Proxy b # liftA2 :: (a -> b -> c) -> Proxy a -> Proxy b -> Proxy c # (>) :: Proxy a -> Proxy b -> Proxy b # (<*) :: Proxy a -> Proxy b -> Proxy a #
(Functor m, Monad m) => Applicative (MaybeT m)
Instance details Defined in Control.Monad.Trans.Maybe Methods pure :: a -> MaybeT m a # (<>) :: MaybeT m (a -> b) -> MaybeT m a -> MaybeT m b # liftA2 :: (a -> b -> c) -> MaybeT m a -> MaybeT m b -> MaybeT m c # (>) :: MaybeT m a -> MaybeT m b -> MaybeT m b # (<*) :: MaybeT m a -> MaybeT m b -> MaybeT m a #
Monad m => Applicative (ZipSource m)
Instance details Defined in Data.Conduit.Internal.Conduit Methods pure :: a -> ZipSource m a # (<>) :: ZipSource m (a -> b) -> ZipSource m a -> ZipSource m b # liftA2 :: (a -> b -> c) -> ZipSource m a -> ZipSource m b -> ZipSource m c # (>) :: ZipSource m a -> ZipSource m b -> ZipSource m b # (<*) :: ZipSource m a -> ZipSource m b -> ZipSource m a #
Applicative m => Applicative (ResourceT m)
Instance details Defined in Control.Monad.Trans.Resource.Internal Methods pure :: a -> ResourceT m a # (<>) :: ResourceT m (a -> b) -> ResourceT m a -> ResourceT m b # liftA2 :: (a -> b -> c) -> ResourceT m a -> ResourceT m b -> ResourceT m c # (>) :: ResourceT m a -> ResourceT m b -> ResourceT m b # (<*) :: ResourceT m a -> ResourceT m b -> ResourceT m a #
Functor f => Applicative (Free f)
Instance details Defined in Control.Monad.Free Methods pure :: a -> Free f a # (<>) :: Free f (a -> b) -> Free f a -> Free f b # liftA2 :: (a -> b -> c) -> Free f a -> Free f b -> Free f c # (>) :: Free f a -> Free f b -> Free f b # (<*) :: Free f a -> Free f b -> Free f a #
Applicative (SpecM a)
Instance details Defined in Test.Hspec.Core.Spec.Monad Methods pure :: a0 -> SpecM a a0 # (<>) :: SpecM a (a0 -> b) -> SpecM a a0 -> SpecM a b # liftA2 :: (a0 -> b -> c) -> SpecM a a0 -> SpecM a b -> SpecM a c # (>) :: SpecM a a0 -> SpecM a b -> SpecM a b # (<*) :: SpecM a a0 -> SpecM a b -> SpecM a a0 #
Applicative m => Applicative (ListT m)
Instance details Defined in Control.Monad.Trans.List Methods pure :: a -> ListT m a # (<>) :: ListT m (a -> b) -> ListT m a -> ListT m b # liftA2 :: (a -> b -> c) -> ListT m a -> ListT m b -> ListT m c # (>) :: ListT m a -> ListT m b -> ListT m b # (<*) :: ListT m a -> ListT m b -> ListT m a #
Applicative m => Applicative (NoLoggingT m)
Instance details Defined in Control.Monad.Logger Methods pure :: a -> NoLoggingT m a # (<>) :: NoLoggingT m (a -> b) -> NoLoggingT m a -> NoLoggingT m b # liftA2 :: (a -> b -> c) -> NoLoggingT m a -> NoLoggingT m b -> NoLoggingT m c # (>) :: NoLoggingT m a -> NoLoggingT m b -> NoLoggingT m b # (<*) :: NoLoggingT m a -> NoLoggingT m b -> NoLoggingT m a #
Applicative m => Applicative (WriterLoggingT m)
Instance details Defined in Control.Monad.Logger Methods pure :: a -> WriterLoggingT m a # (<>) :: WriterLoggingT m (a -> b) -> WriterLoggingT m a -> WriterLoggingT m b # liftA2 :: (a -> b -> c) -> WriterLoggingT m a -> WriterLoggingT m b -> WriterLoggingT m c # (>) :: WriterLoggingT m a -> WriterLoggingT m b -> WriterLoggingT m b # (<*) :: WriterLoggingT m a -> WriterLoggingT m b -> WriterLoggingT m a #
Applicative m => Applicative (LoggingT m)
Instance details Defined in Control.Monad.Logger Methods pure :: a -> LoggingT m a # (<>) :: LoggingT m (a -> b) -> LoggingT m a -> LoggingT m b # liftA2 :: (a -> b -> c) -> LoggingT m a -> LoggingT m b -> LoggingT m c # (>) :: LoggingT m a -> LoggingT m b -> LoggingT m b # (<*) :: LoggingT m a -> LoggingT m b -> LoggingT m a #
Applicative f => Applicative (WrappedPoly f)
Instance details Defined in Data.MonoTraversable Methods pure :: a -> WrappedPoly f a # (<>) :: WrappedPoly f (a -> b) -> WrappedPoly f a -> WrappedPoly f b # liftA2 :: (a -> b -> c) -> WrappedPoly f a -> WrappedPoly f b -> WrappedPoly f c # (>) :: WrappedPoly f a -> WrappedPoly f b -> WrappedPoly f b # (<*) :: WrappedPoly f a -> WrappedPoly f b -> WrappedPoly f a #
Semigroup a => Applicative (These a)
Instance details Defined in Data.Strict.These Methods pure :: a0 -> These a a0 # (<>) :: These a (a0 -> b) -> These a a0 -> These a b # liftA2 :: (a0 -> b -> c) -> These a a0 -> These a b -> These a c # (>) :: These a a0 -> These a b -> These a b # (<*) :: These a a0 -> These a b -> These a a0 #
Semigroup a => Applicative (These a)
Instance details Defined in Data.These Methods pure :: a0 -> These a a0 # (<>) :: These a (a0 -> b) -> These a a0 -> These a b # liftA2 :: (a0 -> b -> c) -> These a a0 -> These a b -> These a c # (>) :: These a a0 -> These a b -> These a b # (<*) :: These a a0 -> These a b -> These a a0 #
MonadUnliftIO m => Applicative (Concurrently m)	Since: unliftio-0.1.0.0
Instance details Defined in UnliftIO.Internals.Async Methods pure :: a -> Concurrently m a # (<>) :: Concurrently m (a -> b) -> Concurrently m a -> Concurrently m b # liftA2 :: (a -> b -> c) -> Concurrently m a -> Concurrently m b -> Concurrently m c # (>) :: Concurrently m a -> Concurrently m b -> Concurrently m b # (<*) :: Concurrently m a -> Concurrently m b -> Concurrently m a #
MonadUnliftIO m => Applicative (Conc m)	Since: unliftio-0.2.9.0
Instance details Defined in UnliftIO.Internals.Async Methods pure :: a -> Conc m a # (<>) :: Conc m (a -> b) -> Conc m a -> Conc m b # liftA2 :: (a -> b -> c) -> Conc m a -> Conc m b -> Conc m c # (>) :: Conc m a -> Conc m b -> Conc m b # (<*) :: Conc m a -> Conc m b -> Conc m a #
Monad m => Applicative (AForm m)
Instance details Defined in Yesod.Form.Types Methods pure :: a -> AForm m a # (<>) :: AForm m (a -> b) -> AForm m a -> AForm m b # liftA2 :: (a -> b -> c) -> AForm m a -> AForm m b -> AForm m c # (>) :: AForm m a -> AForm m b -> AForm m b # (<*) :: AForm m a -> AForm m b -> AForm m a #
Monad m => Applicative (FormInput m)
Instance details Defined in Yesod.Form.Input Methods pure :: a -> FormInput m a # (<>) :: FormInput m (a -> b) -> FormInput m a -> FormInput m b # liftA2 :: (a -> b -> c) -> FormInput m a -> FormInput m b -> FormInput m c # (>) :: FormInput m a -> FormInput m b -> FormInput m b # (<*) :: FormInput m a -> FormInput m b -> FormInput m a #
Applicative (WidgetFor site)
Instance details Defined in Yesod.Core.Types Methods pure :: a -> WidgetFor site a # (<>) :: WidgetFor site (a -> b) -> WidgetFor site a -> WidgetFor site b # liftA2 :: (a -> b -> c) -> WidgetFor site a -> WidgetFor site b -> WidgetFor site c # (>) :: WidgetFor site a -> WidgetFor site b -> WidgetFor site b # (<*) :: WidgetFor site a -> WidgetFor site b -> WidgetFor site a #
Applicative (HandlerFor site)
Instance details Defined in Yesod.Core.Types Methods pure :: a -> HandlerFor site a # (<>) :: HandlerFor site (a -> b) -> HandlerFor site a -> HandlerFor site b # liftA2 :: (a -> b -> c) -> HandlerFor site a -> HandlerFor site b -> HandlerFor site c # (>) :: HandlerFor site a -> HandlerFor site b -> HandlerFor site b # (<*) :: HandlerFor site a -> HandlerFor site b -> HandlerFor site a #
Applicative (SIO s)
Instance details Defined in Yesod.Test Methods pure :: a -> SIO s a # (<>) :: SIO s (a -> b) -> SIO s a -> SIO s b # liftA2 :: (a -> b -> c) -> SIO s a -> SIO s b -> SIO s c # (>) :: SIO s a -> SIO s b -> SIO s b # (<*) :: SIO s a -> SIO s b -> SIO s a #
Applicative (SetM s)
Instance details Defined in Data.Graph Methods pure :: a -> SetM s a # (<>) :: SetM s (a -> b) -> SetM s a -> SetM s b # liftA2 :: (a -> b -> c) -> SetM s a -> SetM s b -> SetM s c # (>) :: SetM s a -> SetM s b -> SetM s b # (<*) :: SetM s a -> SetM s b -> SetM s a #
Applicative f => Applicative (Rec1 f)	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Methods pure :: a -> Rec1 f a # (<>) :: Rec1 f (a -> b) -> Rec1 f a -> Rec1 f b # liftA2 :: (a -> b -> c) -> Rec1 f a -> Rec1 f b -> Rec1 f c # (>) :: Rec1 f a -> Rec1 f b -> Rec1 f b # (<*) :: Rec1 f a -> Rec1 f b -> Rec1 f a #
(Monoid a, Monoid b) => Applicative ((,,) a b)	Since: base-4.14.0.0
Instance details Defined in GHC.Base Methods pure :: a0 -> (a, b, a0) # (<>) :: (a, b, a0 -> b0) -> (a, b, a0) -> (a, b, b0) # liftA2 :: (a0 -> b0 -> c) -> (a, b, a0) -> (a, b, b0) -> (a, b, c) # (>) :: (a, b, a0) -> (a, b, b0) -> (a, b, b0) # (<*) :: (a, b, a0) -> (a, b, b0) -> (a, b, a0) #
Arrow a => Applicative (WrappedArrow a b)	Since: base-2.1
Instance details Defined in Control.Applicative Methods pure :: a0 -> WrappedArrow a b a0 # (<>) :: WrappedArrow a b (a0 -> b0) -> WrappedArrow a b a0 -> WrappedArrow a b b0 # liftA2 :: (a0 -> b0 -> c) -> WrappedArrow a b a0 -> WrappedArrow a b b0 -> WrappedArrow a b c # (>) :: WrappedArrow a b a0 -> WrappedArrow a b b0 -> WrappedArrow a b b0 # (<*) :: WrappedArrow a b a0 -> WrappedArrow a b b0 -> WrappedArrow a b a0 #
Applicative m => Applicative (Kleisli m a)	Since: base-4.14.0.0
Instance details Defined in Control.Arrow Methods pure :: a0 -> Kleisli m a a0 # (<>) :: Kleisli m a (a0 -> b) -> Kleisli m a a0 -> Kleisli m a b # liftA2 :: (a0 -> b -> c) -> Kleisli m a a0 -> Kleisli m a b -> Kleisli m a c # (>) :: Kleisli m a a0 -> Kleisli m a b -> Kleisli m a b # (<*) :: Kleisli m a a0 -> Kleisli m a b -> Kleisli m a a0 #
Monoid m => Applicative (Const m :: Type -> Type)	Since: base-2.0.1
Instance details Defined in Data.Functor.Const Methods pure :: a -> Const m a # (<>) :: Const m (a -> b) -> Const m a -> Const m b # liftA2 :: (a -> b -> c) -> Const m a -> Const m b -> Const m c # (>) :: Const m a -> Const m b -> Const m b # (<*) :: Const m a -> Const m b -> Const m a #
Applicative f => Applicative (Ap f)	Since: base-4.12.0.0
Instance details Defined in Data.Monoid Methods pure :: a -> Ap f a # (<>) :: Ap f (a -> b) -> Ap f a -> Ap f b # liftA2 :: (a -> b -> c) -> Ap f a -> Ap f b -> Ap f c # (>) :: Ap f a -> Ap f b -> Ap f b # (<*) :: Ap f a -> Ap f b -> Ap f a #
Applicative f => Applicative (Alt f)	Since: base-4.8.0.0
Instance details Defined in Data.Semigroup.Internal Methods pure :: a -> Alt f a # (<>) :: Alt f (a -> b) -> Alt f a -> Alt f b # liftA2 :: (a -> b -> c) -> Alt f a -> Alt f b -> Alt f c # (>) :: Alt f a -> Alt f b -> Alt f b # (<*) :: Alt f a -> Alt f b -> Alt f a #
Applicative m => Applicative (IdentityT m)
Instance details Defined in Control.Monad.Trans.Identity Methods pure :: a -> IdentityT m a # (<>) :: IdentityT m (a -> b) -> IdentityT m a -> IdentityT m b # liftA2 :: (a -> b -> c) -> IdentityT m a -> IdentityT m b -> IdentityT m c # (>) :: IdentityT m a -> IdentityT m b -> IdentityT m b # (<*) :: IdentityT m a -> IdentityT m b -> IdentityT m a #
(Monoid w, Applicative m) => Applicative (WriterT w m)
Instance details Defined in Control.Monad.Trans.Writer.Strict Methods pure :: a -> WriterT w m a # (<>) :: WriterT w m (a -> b) -> WriterT w m a -> WriterT w m b # liftA2 :: (a -> b -> c) -> WriterT w m a -> WriterT w m b -> WriterT w m c # (>) :: WriterT w m a -> WriterT w m b -> WriterT w m b # (<*) :: WriterT w m a -> WriterT w m b -> WriterT w m a #
(Monoid w, Applicative m) => Applicative (WriterT w m)
Instance details Defined in Control.Monad.Trans.Writer.Lazy Methods pure :: a -> WriterT w m a # (<>) :: WriterT w m (a -> b) -> WriterT w m a -> WriterT w m b # liftA2 :: (a -> b -> c) -> WriterT w m a -> WriterT w m b -> WriterT w m c # (>) :: WriterT w m a -> WriterT w m b -> WriterT w m b # (<*) :: WriterT w m a -> WriterT w m b -> WriterT w m a #
(Functor m, Monad m) => Applicative (StateT s m)
Instance details Defined in Control.Monad.Trans.State.Strict Methods pure :: a -> StateT s m a # (<>) :: StateT s m (a -> b) -> StateT s m a -> StateT s m b # liftA2 :: (a -> b -> c) -> StateT s m a -> StateT s m b -> StateT s m c # (>) :: StateT s m a -> StateT s m b -> StateT s m b # (<*) :: StateT s m a -> StateT s m b -> StateT s m a #
(Functor m, Monad m) => Applicative (StateT s m)
Instance details Defined in Control.Monad.Trans.State.Lazy Methods pure :: a -> StateT s m a # (<>) :: StateT s m (a -> b) -> StateT s m a -> StateT s m b # liftA2 :: (a -> b -> c) -> StateT s m a -> StateT s m b -> StateT s m c # (>) :: StateT s m a -> StateT s m b -> StateT s m b # (<*) :: StateT s m a -> StateT s m b -> StateT s m a #
Applicative m => Applicative (ReaderT r m)
Instance details Defined in Control.Monad.Trans.Reader Methods pure :: a -> ReaderT r m a # (<>) :: ReaderT r m (a -> b) -> ReaderT r m a -> ReaderT r m b # liftA2 :: (a -> b -> c) -> ReaderT r m a -> ReaderT r m b -> ReaderT r m c # (>) :: ReaderT r m a -> ReaderT r m b -> ReaderT r m b # (<*) :: ReaderT r m a -> ReaderT r m b -> ReaderT r m a #
(Functor m, Monad m) => Applicative (ExceptT e m)
Instance details Defined in Control.Monad.Trans.Except Methods pure :: a -> ExceptT e m a # (<>) :: ExceptT e m (a -> b) -> ExceptT e m a -> ExceptT e m b # liftA2 :: (a -> b -> c) -> ExceptT e m a -> ExceptT e m b -> ExceptT e m c # (>) :: ExceptT e m a -> ExceptT e m b -> ExceptT e m b # (<*) :: ExceptT e m a -> ExceptT e m b -> ExceptT e m a #
Monad m => Applicative (ZipSink i m)
Instance details Defined in Data.Conduit.Internal.Conduit Methods pure :: a -> ZipSink i m a # (<>) :: ZipSink i m (a -> b) -> ZipSink i m a -> ZipSink i m b # liftA2 :: (a -> b -> c) -> ZipSink i m a -> ZipSink i m b -> ZipSink i m c # (>) :: ZipSink i m a -> ZipSink i m b -> ZipSink i m b # (<*) :: ZipSink i m a -> ZipSink i m b -> ZipSink i m a #
(Applicative f, Monad f) => Applicative (WhenMissing f x)	Equivalent to `ReaderT k (ReaderT x (MaybeT f))`. Since: containers-0.5.9
Instance details Defined in Data.IntMap.Internal Methods pure :: a -> WhenMissing f x a # (<>) :: WhenMissing f x (a -> b) -> WhenMissing f x a -> WhenMissing f x b # liftA2 :: (a -> b -> c) -> WhenMissing f x a -> WhenMissing f x b -> WhenMissing f x c # (>) :: WhenMissing f x a -> WhenMissing f x b -> WhenMissing f x b # (<*) :: WhenMissing f x a -> WhenMissing f x b -> WhenMissing f x a #
(Functor f, Functor a, Monad a) => Applicative (FreeT f a)
Instance details Defined in Control.Monad.Free Methods pure :: a0 -> FreeT f a a0 # (<>) :: FreeT f a (a0 -> b) -> FreeT f a a0 -> FreeT f a b # liftA2 :: (a0 -> b -> c) -> FreeT f a a0 -> FreeT f a b -> FreeT f a c # (>) :: FreeT f a a0 -> FreeT f a b -> FreeT f a b # (<*) :: FreeT f a a0 -> FreeT f a b -> FreeT f a a0 #
(Functor m, Monad m) => Applicative (ErrorT e m)
Instance details Defined in Control.Monad.Trans.Error Methods pure :: a -> ErrorT e m a # (<>) :: ErrorT e m (a -> b) -> ErrorT e m a -> ErrorT e m b # liftA2 :: (a -> b -> c) -> ErrorT e m a -> ErrorT e m b -> ErrorT e m c # (>) :: ErrorT e m a -> ErrorT e m b -> ErrorT e m b # (<*) :: ErrorT e m a -> ErrorT e m b -> ErrorT e m a #
Applicative (Tagged s)
Instance details Defined in Data.Tagged Methods pure :: a -> Tagged s a # (<>) :: Tagged s (a -> b) -> Tagged s a -> Tagged s b # liftA2 :: (a -> b -> c) -> Tagged s a -> Tagged s b -> Tagged s c # (>) :: Tagged s a -> Tagged s b -> Tagged s b # (<*) :: Tagged s a -> Tagged s b -> Tagged s a #
Applicative (SubHandlerFor child master)
Instance details Defined in Yesod.Core.Types Methods pure :: a -> SubHandlerFor child master a # (<>) :: SubHandlerFor child master (a -> b) -> SubHandlerFor child master a -> SubHandlerFor child master b # liftA2 :: (a -> b -> c) -> SubHandlerFor child master a -> SubHandlerFor child master b -> SubHandlerFor child master c # (>) :: SubHandlerFor child master a -> SubHandlerFor child master b -> SubHandlerFor child master b # (<*) :: SubHandlerFor child master a -> SubHandlerFor child master b -> SubHandlerFor child master a #
Applicative ((->) r :: Type -> Type)	Since: base-2.1
Instance details Defined in GHC.Base Methods pure :: a -> r -> a # (<>) :: (r -> (a -> b)) -> (r -> a) -> r -> b # liftA2 :: (a -> b -> c) -> (r -> a) -> (r -> b) -> r -> c # (>) :: (r -> a) -> (r -> b) -> r -> b # (<*) :: (r -> a) -> (r -> b) -> r -> a #
Monoid c => Applicative (K1 i c :: Type -> Type)	Since: base-4.12.0.0
Instance details Defined in GHC.Generics Methods pure :: a -> K1 i c a # (<>) :: K1 i c (a -> b) -> K1 i c a -> K1 i c b # liftA2 :: (a -> b -> c0) -> K1 i c a -> K1 i c b -> K1 i c c0 # (>) :: K1 i c a -> K1 i c b -> K1 i c b # (<*) :: K1 i c a -> K1 i c b -> K1 i c a #
(Applicative f, Applicative g) => Applicative (f :*: g)	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Methods pure :: a -> (f :: g) a # (<>) :: (f :: g) (a -> b) -> (f :: g) a -> (f :: g) b # liftA2 :: (a -> b -> c) -> (f :: g) a -> (f :: g) b -> (f :: g) c # (>) :: (f :: g) a -> (f :: g) b -> (f :: g) b # (<) :: (f :: g) a -> (f :: g) b -> (f :: g) a #
(Monoid a, Monoid b, Monoid c) => Applicative ((,,,) a b c)	Since: base-4.14.0.0
Instance details Defined in GHC.Base Methods pure :: a0 -> (a, b, c, a0) # (<>) :: (a, b, c, a0 -> b0) -> (a, b, c, a0) -> (a, b, c, b0) # liftA2 :: (a0 -> b0 -> c0) -> (a, b, c, a0) -> (a, b, c, b0) -> (a, b, c, c0) # (>) :: (a, b, c, a0) -> (a, b, c, b0) -> (a, b, c, b0) # (<*) :: (a, b, c, a0) -> (a, b, c, b0) -> (a, b, c, a0) #
(Applicative f, Applicative g) => Applicative (Product f g)	Since: base-4.9.0.0
Instance details Defined in Data.Functor.Product Methods pure :: a -> Product f g a # (<>) :: Product f g (a -> b) -> Product f g a -> Product f g b # liftA2 :: (a -> b -> c) -> Product f g a -> Product f g b -> Product f g c # (>) :: Product f g a -> Product f g b -> Product f g b # (<*) :: Product f g a -> Product f g b -> Product f g a #
Applicative (ConduitT i o m)
Instance details Defined in Data.Conduit.Internal.Conduit Methods pure :: a -> ConduitT i o m a # (<>) :: ConduitT i o m (a -> b) -> ConduitT i o m a -> ConduitT i o m b # liftA2 :: (a -> b -> c) -> ConduitT i o m a -> ConduitT i o m b -> ConduitT i o m c # (>) :: ConduitT i o m a -> ConduitT i o m b -> ConduitT i o m b # (<*) :: ConduitT i o m a -> ConduitT i o m b -> ConduitT i o m a #
Monad m => Applicative (ZipConduit i o m)
Instance details Defined in Data.Conduit.Internal.Conduit Methods pure :: a -> ZipConduit i o m a # (<>) :: ZipConduit i o m (a -> b) -> ZipConduit i o m a -> ZipConduit i o m b # liftA2 :: (a -> b -> c) -> ZipConduit i o m a -> ZipConduit i o m b -> ZipConduit i o m c # (>) :: ZipConduit i o m a -> ZipConduit i o m b -> ZipConduit i o m b # (<*) :: ZipConduit i o m a -> ZipConduit i o m b -> ZipConduit i o m a #
(Monad f, Applicative f) => Applicative (WhenMatched f x y)	Equivalent to `ReaderT Key (ReaderT x (ReaderT y (MaybeT f)))` Since: containers-0.5.9
Instance details Defined in Data.IntMap.Internal Methods pure :: a -> WhenMatched f x y a # (<>) :: WhenMatched f x y (a -> b) -> WhenMatched f x y a -> WhenMatched f x y b # liftA2 :: (a -> b -> c) -> WhenMatched f x y a -> WhenMatched f x y b -> WhenMatched f x y c # (>) :: WhenMatched f x y a -> WhenMatched f x y b -> WhenMatched f x y b # (<*) :: WhenMatched f x y a -> WhenMatched f x y b -> WhenMatched f x y a #
(Applicative f, Monad f) => Applicative (WhenMissing f k x)	Equivalent to `ReaderT k (ReaderT x (MaybeT f))` . Since: containers-0.5.9
Instance details Defined in Data.Map.Internal Methods pure :: a -> WhenMissing f k x a # (<>) :: WhenMissing f k x (a -> b) -> WhenMissing f k x a -> WhenMissing f k x b # liftA2 :: (a -> b -> c) -> WhenMissing f k x a -> WhenMissing f k x b -> WhenMissing f k x c # (>) :: WhenMissing f k x a -> WhenMissing f k x b -> WhenMissing f k x b # (<*) :: WhenMissing f k x a -> WhenMissing f k x b -> WhenMissing f k x a #
Stream s => Applicative (ParsecT e s m)	`pure` returns a parser that succeeds without consuming input.
Instance details Defined in Text.Megaparsec.Internal Methods pure :: a -> ParsecT e s m a # (<>) :: ParsecT e s m (a -> b) -> ParsecT e s m a -> ParsecT e s m b # liftA2 :: (a -> b -> c) -> ParsecT e s m a -> ParsecT e s m b -> ParsecT e s m c # (>) :: ParsecT e s m a -> ParsecT e s m b -> ParsecT e s m b # (<*) :: ParsecT e s m a -> ParsecT e s m b -> ParsecT e s m a #
Applicative f => Applicative (M1 i c f)	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Methods pure :: a -> M1 i c f a # (<>) :: M1 i c f (a -> b) -> M1 i c f a -> M1 i c f b # liftA2 :: (a -> b -> c0) -> M1 i c f a -> M1 i c f b -> M1 i c f c0 # (>) :: M1 i c f a -> M1 i c f b -> M1 i c f b # (<*) :: M1 i c f a -> M1 i c f b -> M1 i c f a #
(Applicative f, Applicative g) => Applicative (f :.: g)	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Methods pure :: a -> (f :.: g) a # (<>) :: (f :.: g) (a -> b) -> (f :.: g) a -> (f :.: g) b # liftA2 :: (a -> b -> c) -> (f :.: g) a -> (f :.: g) b -> (f :.: g) c # (>) :: (f :.: g) a -> (f :.: g) b -> (f :.: g) b # (<*) :: (f :.: g) a -> (f :.: g) b -> (f :.: g) a #
(Applicative f, Applicative g) => Applicative (Compose f g)	Since: base-4.9.0.0
Instance details Defined in Data.Functor.Compose Methods pure :: a -> Compose f g a # (<>) :: Compose f g (a -> b) -> Compose f g a -> Compose f g b # liftA2 :: (a -> b -> c) -> Compose f g a -> Compose f g b -> Compose f g c # (>) :: Compose f g a -> Compose f g b -> Compose f g b # (<*) :: Compose f g a -> Compose f g b -> Compose f g a #
(Monoid w, Functor m, Monad m) => Applicative (RWST r w s m)
Instance details Defined in Control.Monad.Trans.RWS.Strict Methods pure :: a -> RWST r w s m a # (<>) :: RWST r w s m (a -> b) -> RWST r w s m a -> RWST r w s m b # liftA2 :: (a -> b -> c) -> RWST r w s m a -> RWST r w s m b -> RWST r w s m c # (>) :: RWST r w s m a -> RWST r w s m b -> RWST r w s m b # (<*) :: RWST r w s m a -> RWST r w s m b -> RWST r w s m a #
(Monoid w, Functor m, Monad m) => Applicative (RWST r w s m)
Instance details Defined in Control.Monad.Trans.RWS.Lazy Methods pure :: a -> RWST r w s m a # (<>) :: RWST r w s m (a -> b) -> RWST r w s m a -> RWST r w s m b # liftA2 :: (a -> b -> c) -> RWST r w s m a -> RWST r w s m b -> RWST r w s m c # (>) :: RWST r w s m a -> RWST r w s m b -> RWST r w s m b # (<*) :: RWST r w s m a -> RWST r w s m b -> RWST r w s m a #
(Monad f, Applicative f) => Applicative (WhenMatched f k x y)	Equivalent to `ReaderT k (ReaderT x (ReaderT y (MaybeT f)))` Since: containers-0.5.9
Instance details Defined in Data.Map.Internal Methods pure :: a -> WhenMatched f k x y a # (<>) :: WhenMatched f k x y (a -> b) -> WhenMatched f k x y a -> WhenMatched f k x y b # liftA2 :: (a -> b -> c) -> WhenMatched f k x y a -> WhenMatched f k x y b -> WhenMatched f k x y c # (>) :: WhenMatched f k x y a -> WhenMatched f k x y b -> WhenMatched f k x y b # (<*) :: WhenMatched f k x y a -> WhenMatched f k x y b -> WhenMatched f k x y a #
Monad state => Applicative (Builder collection mutCollection step state err)
Instance details Defined in Basement.MutableBuilder Methods pure :: a -> Builder collection mutCollection step state err a # (<>) :: Builder collection mutCollection step state err (a -> b) -> Builder collection mutCollection step state err a -> Builder collection mutCollection step state err b # liftA2 :: (a -> b -> c) -> Builder collection mutCollection step state err a -> Builder collection mutCollection step state err b -> Builder collection mutCollection step state err c # (>) :: Builder collection mutCollection step state err a -> Builder collection mutCollection step state err b -> Builder collection mutCollection step state err b # (<*) :: Builder collection mutCollection step state err a -> Builder collection mutCollection step state err b -> Builder collection mutCollection step state err a #
Monad m => Applicative (Pipe l i o u m)
Instance details Defined in Data.Conduit.Internal.Pipe Methods pure :: a -> Pipe l i o u m a # (<>) :: Pipe l i o u m (a -> b) -> Pipe l i o u m a -> Pipe l i o u m b # liftA2 :: (a -> b -> c) -> Pipe l i o u m a -> Pipe l i o u m b -> Pipe l i o u m c # (>) :: Pipe l i o u m a -> Pipe l i o u m b -> Pipe l i o u m b # (<*) :: Pipe l i o u m a -> Pipe l i o u m b -> Pipe l i o u m a #

class Foldable (t :: Type -> Type) where #

Data structures that can be folded.

For example, given a data type

data Tree a = Empty | Leaf a | Node (Tree a) a (Tree a)

a suitable instance would be

instance Foldable Tree where
   foldMap f Empty = mempty
   foldMap f (Leaf x) = f x
   foldMap f (Node l k r) = foldMap f l `mappend` f k `mappend` foldMap f r

This is suitable even for abstract types, as the monoid is assumed to satisfy the monoid laws. Alternatively, one could define foldr:

instance Foldable Tree where
   foldr f z Empty = z
   foldr f z (Leaf x) = f x z
   foldr f z (Node l k r) = foldr f (f k (foldr f z r)) l

Foldable instances are expected to satisfy the following laws:

foldr f z t = appEndo (foldMap (Endo . f) t ) z

foldl f z t = appEndo (getDual (foldMap (Dual . Endo . flip f) t)) z

fold = foldMap id

length = getSum . foldMap (Sum . const  1)

sum, product, maximum, and minimum should all be essentially equivalent to foldMap forms, such as

sum = getSum . foldMap Sum

but may be less defined.

If the type is also a Functor instance, it should satisfy

foldMap f = fold . fmap f

which implies that

foldMap f . fmap g = foldMap (f . g)

Minimal complete definition

foldMap | foldr

Methods

fold :: Monoid m => t m -> m #

Combine the elements of a structure using a monoid.

foldMap :: Monoid m => (a -> m) -> t a -> m #

Map each element of the structure to a monoid, and combine the results.

foldMap' :: Monoid m => (a -> m) -> t a -> m #

A variant of foldMap that is strict in the accumulator.

Since: base-4.13.0.0

foldr :: (a -> b -> b) -> b -> t a -> b #

Right-associative fold of a structure.

In the case of lists, foldr, when applied to a binary operator, a starting value (typically the right-identity of the operator), and a list, reduces the list using the binary operator, from right to left:

foldr f z [x1, x2, ..., xn] == x1 `f` (x2 `f` ... (xn `f` z)...)

Note that, since the head of the resulting expression is produced by an application of the operator to the first element of the list, foldr can produce a terminating expression from an infinite list.

For a general Foldable structure this should be semantically identical to,

foldr f z = foldr f z . toList

foldr' :: (a -> b -> b) -> b -> t a -> b #

Right-associative fold of a structure, but with strict application of the operator.

Since: base-4.6.0.0

foldl :: (b -> a -> b) -> b -> t a -> b #

Left-associative fold of a structure.

In the case of lists, foldl, when applied to a binary operator, a starting value (typically the left-identity of the operator), and a list, reduces the list using the binary operator, from left to right:

foldl f z [x1, x2, ..., xn] == (...((z `f` x1) `f` x2) `f`...) `f` xn

Note that to produce the outermost application of the operator the entire input list must be traversed. This means that foldl' will diverge if given an infinite list.

Also note that if you want an efficient left-fold, you probably want to use foldl' instead of foldl. The reason for this is that latter does not force the "inner" results (e.g. z `f` x1 in the above example) before applying them to the operator (e.g. to (`f` x2)). This results in a thunk chain $\mathcal{O}(n)$ elements long, which then must be evaluated from the outside-in.

For a general Foldable structure this should be semantically identical to,

foldl f z = foldl f z . toList

foldl' :: (b -> a -> b) -> b -> t a -> b #

Left-associative fold of a structure but with strict application of the operator.

This ensures that each step of the fold is forced to weak head normal form before being applied, avoiding the collection of thunks that would otherwise occur. This is often what you want to strictly reduce a finite list to a single, monolithic result (e.g. length).

For a general Foldable structure this should be semantically identical to,

foldl' f z = foldl' f z . toList

Since: base-4.6.0.0

foldr1 :: (a -> a -> a) -> t a -> a #

A variant of foldr that has no base case, and thus may only be applied to non-empty structures.

foldr1 f = foldr1 f . toList

foldl1 :: (a -> a -> a) -> t a -> a #

A variant of foldl that has no base case, and thus may only be applied to non-empty structures.

foldl1 f = foldl1 f . toList

toList :: t a -> [a] #

List of elements of a structure, from left to right.

Since: base-4.8.0.0

null :: t a -> Bool #

Test whether the structure is empty. The default implementation is optimized for structures that are similar to cons-lists, because there is no general way to do better.

Since: base-4.8.0.0

length :: t a -> Int #

Returns the size/length of a finite structure as an Int. The default implementation is optimized for structures that are similar to cons-lists, because there is no general way to do better.

Since: base-4.8.0.0

elem :: Eq a => a -> t a -> Bool infix 4 #

Does the element occur in the structure?

Since: base-4.8.0.0

maximum :: Ord a => t a -> a #

The largest element of a non-empty structure.

Since: base-4.8.0.0

minimum :: Ord a => t a -> a #

The least element of a non-empty structure.

Since: base-4.8.0.0

sum :: Num a => t a -> a #

The sum function computes the sum of the numbers of a structure.

Since: base-4.8.0.0

product :: Num a => t a -> a #

The product function computes the product of the numbers of a structure.

Since: base-4.8.0.0

Instances

Instances details

Foldable []	Since: base-2.1
Instance details Defined in Data.Foldable Methods fold :: Monoid m => [m] -> m # foldMap :: Monoid m => (a -> m) -> [a] -> m # foldMap' :: Monoid m => (a -> m) -> [a] -> m # foldr :: (a -> b -> b) -> b -> [a] -> b # foldr' :: (a -> b -> b) -> b -> [a] -> b # foldl :: (b -> a -> b) -> b -> [a] -> b # foldl' :: (b -> a -> b) -> b -> [a] -> b # foldr1 :: (a -> a -> a) -> [a] -> a # foldl1 :: (a -> a -> a) -> [a] -> a # toList :: [a] -> [a] # null :: [a] -> Bool # length :: [a] -> Int # elem :: Eq a => a -> [a] -> Bool # maximum :: Ord a => [a] -> a # minimum :: Ord a => [a] -> a # sum :: Num a => [a] -> a # product :: Num a => [a] -> a #
Foldable Maybe	Since: base-2.1
Instance details Defined in Data.Foldable Methods fold :: Monoid m => Maybe m -> m # foldMap :: Monoid m => (a -> m) -> Maybe a -> m # foldMap' :: Monoid m => (a -> m) -> Maybe a -> m # foldr :: (a -> b -> b) -> b -> Maybe a -> b # foldr' :: (a -> b -> b) -> b -> Maybe a -> b # foldl :: (b -> a -> b) -> b -> Maybe a -> b # foldl' :: (b -> a -> b) -> b -> Maybe a -> b # foldr1 :: (a -> a -> a) -> Maybe a -> a # foldl1 :: (a -> a -> a) -> Maybe a -> a # toList :: Maybe a -> [a] # null :: Maybe a -> Bool # length :: Maybe a -> Int # elem :: Eq a => a -> Maybe a -> Bool # maximum :: Ord a => Maybe a -> a # minimum :: Ord a => Maybe a -> a # sum :: Num a => Maybe a -> a # product :: Num a => Maybe a -> a #
Foldable Par1	Since: base-4.9.0.0
Instance details Defined in Data.Foldable Methods fold :: Monoid m => Par1 m -> m # foldMap :: Monoid m => (a -> m) -> Par1 a -> m # foldMap' :: Monoid m => (a -> m) -> Par1 a -> m # foldr :: (a -> b -> b) -> b -> Par1 a -> b # foldr' :: (a -> b -> b) -> b -> Par1 a -> b # foldl :: (b -> a -> b) -> b -> Par1 a -> b # foldl' :: (b -> a -> b) -> b -> Par1 a -> b # foldr1 :: (a -> a -> a) -> Par1 a -> a # foldl1 :: (a -> a -> a) -> Par1 a -> a # toList :: Par1 a -> [a] # null :: Par1 a -> Bool # length :: Par1 a -> Int # elem :: Eq a => a -> Par1 a -> Bool # maximum :: Ord a => Par1 a -> a # minimum :: Ord a => Par1 a -> a # sum :: Num a => Par1 a -> a # product :: Num a => Par1 a -> a #
Foldable IResult
Instance details Defined in Data.Aeson.Types.Internal Methods fold :: Monoid m => IResult m -> m # foldMap :: Monoid m => (a -> m) -> IResult a -> m # foldMap' :: Monoid m => (a -> m) -> IResult a -> m # foldr :: (a -> b -> b) -> b -> IResult a -> b # foldr' :: (a -> b -> b) -> b -> IResult a -> b # foldl :: (b -> a -> b) -> b -> IResult a -> b # foldl' :: (b -> a -> b) -> b -> IResult a -> b # foldr1 :: (a -> a -> a) -> IResult a -> a # foldl1 :: (a -> a -> a) -> IResult a -> a # toList :: IResult a -> [a] # null :: IResult a -> Bool # length :: IResult a -> Int # elem :: Eq a => a -> IResult a -> Bool # maximum :: Ord a => IResult a -> a # minimum :: Ord a => IResult a -> a # sum :: Num a => IResult a -> a # product :: Num a => IResult a -> a #
Foldable Result
Instance details Defined in Data.Aeson.Types.Internal Methods fold :: Monoid m => Result m -> m # foldMap :: Monoid m => (a -> m) -> Result a -> m # foldMap' :: Monoid m => (a -> m) -> Result a -> m # foldr :: (a -> b -> b) -> b -> Result a -> b # foldr' :: (a -> b -> b) -> b -> Result a -> b # foldl :: (b -> a -> b) -> b -> Result a -> b # foldl' :: (b -> a -> b) -> b -> Result a -> b # foldr1 :: (a -> a -> a) -> Result a -> a # foldl1 :: (a -> a -> a) -> Result a -> a # toList :: Result a -> [a] # null :: Result a -> Bool # length :: Result a -> Int # elem :: Eq a => a -> Result a -> Bool # maximum :: Ord a => Result a -> a # minimum :: Ord a => Result a -> a # sum :: Num a => Result a -> a # product :: Num a => Result a -> a #
Foldable Complex	Since: base-4.9.0.0
Instance details Defined in Data.Complex Methods fold :: Monoid m => Complex m -> m # foldMap :: Monoid m => (a -> m) -> Complex a -> m # foldMap' :: Monoid m => (a -> m) -> Complex a -> m # foldr :: (a -> b -> b) -> b -> Complex a -> b # foldr' :: (a -> b -> b) -> b -> Complex a -> b # foldl :: (b -> a -> b) -> b -> Complex a -> b # foldl' :: (b -> a -> b) -> b -> Complex a -> b # foldr1 :: (a -> a -> a) -> Complex a -> a # foldl1 :: (a -> a -> a) -> Complex a -> a # toList :: Complex a -> [a] # null :: Complex a -> Bool # length :: Complex a -> Int # elem :: Eq a => a -> Complex a -> Bool # maximum :: Ord a => Complex a -> a # minimum :: Ord a => Complex a -> a # sum :: Num a => Complex a -> a # product :: Num a => Complex a -> a #
Foldable Min	Since: base-4.9.0.0
Instance details Defined in Data.Semigroup Methods fold :: Monoid m => Min m -> m # foldMap :: Monoid m => (a -> m) -> Min a -> m # foldMap' :: Monoid m => (a -> m) -> Min a -> m # foldr :: (a -> b -> b) -> b -> Min a -> b # foldr' :: (a -> b -> b) -> b -> Min a -> b # foldl :: (b -> a -> b) -> b -> Min a -> b # foldl' :: (b -> a -> b) -> b -> Min a -> b # foldr1 :: (a -> a -> a) -> Min a -> a # foldl1 :: (a -> a -> a) -> Min a -> a # toList :: Min a -> [a] # null :: Min a -> Bool # length :: Min a -> Int # elem :: Eq a => a -> Min a -> Bool # maximum :: Ord a => Min a -> a # minimum :: Ord a => Min a -> a # sum :: Num a => Min a -> a # product :: Num a => Min a -> a #
Foldable Max	Since: base-4.9.0.0
Instance details Defined in Data.Semigroup Methods fold :: Monoid m => Max m -> m # foldMap :: Monoid m => (a -> m) -> Max a -> m # foldMap' :: Monoid m => (a -> m) -> Max a -> m # foldr :: (a -> b -> b) -> b -> Max a -> b # foldr' :: (a -> b -> b) -> b -> Max a -> b # foldl :: (b -> a -> b) -> b -> Max a -> b # foldl' :: (b -> a -> b) -> b -> Max a -> b # foldr1 :: (a -> a -> a) -> Max a -> a # foldl1 :: (a -> a -> a) -> Max a -> a # toList :: Max a -> [a] # null :: Max a -> Bool # length :: Max a -> Int # elem :: Eq a => a -> Max a -> Bool # maximum :: Ord a => Max a -> a # minimum :: Ord a => Max a -> a # sum :: Num a => Max a -> a # product :: Num a => Max a -> a #
Foldable First	Since: base-4.9.0.0
Instance details Defined in Data.Semigroup Methods fold :: Monoid m => First m -> m # foldMap :: Monoid m => (a -> m) -> First a -> m # foldMap' :: Monoid m => (a -> m) -> First a -> m # foldr :: (a -> b -> b) -> b -> First a -> b # foldr' :: (a -> b -> b) -> b -> First a -> b # foldl :: (b -> a -> b) -> b -> First a -> b # foldl' :: (b -> a -> b) -> b -> First a -> b # foldr1 :: (a -> a -> a) -> First a -> a # foldl1 :: (a -> a -> a) -> First a -> a # toList :: First a -> [a] # null :: First a -> Bool # length :: First a -> Int # elem :: Eq a => a -> First a -> Bool # maximum :: Ord a => First a -> a # minimum :: Ord a => First a -> a # sum :: Num a => First a -> a # product :: Num a => First a -> a #
Foldable Last	Since: base-4.9.0.0
Instance details Defined in Data.Semigroup Methods fold :: Monoid m => Last m -> m # foldMap :: Monoid m => (a -> m) -> Last a -> m # foldMap' :: Monoid m => (a -> m) -> Last a -> m # foldr :: (a -> b -> b) -> b -> Last a -> b # foldr' :: (a -> b -> b) -> b -> Last a -> b # foldl :: (b -> a -> b) -> b -> Last a -> b # foldl' :: (b -> a -> b) -> b -> Last a -> b # foldr1 :: (a -> a -> a) -> Last a -> a # foldl1 :: (a -> a -> a) -> Last a -> a # toList :: Last a -> [a] # null :: Last a -> Bool # length :: Last a -> Int # elem :: Eq a => a -> Last a -> Bool # maximum :: Ord a => Last a -> a # minimum :: Ord a => Last a -> a # sum :: Num a => Last a -> a # product :: Num a => Last a -> a #
Foldable Option	Since: base-4.9.0.0
Instance details Defined in Data.Semigroup Methods fold :: Monoid m => Option m -> m # foldMap :: Monoid m => (a -> m) -> Option a -> m # foldMap' :: Monoid m => (a -> m) -> Option a -> m # foldr :: (a -> b -> b) -> b -> Option a -> b # foldr' :: (a -> b -> b) -> b -> Option a -> b # foldl :: (b -> a -> b) -> b -> Option a -> b # foldl' :: (b -> a -> b) -> b -> Option a -> b # foldr1 :: (a -> a -> a) -> Option a -> a # foldl1 :: (a -> a -> a) -> Option a -> a # toList :: Option a -> [a] # null :: Option a -> Bool # length :: Option a -> Int # elem :: Eq a => a -> Option a -> Bool # maximum :: Ord a => Option a -> a # minimum :: Ord a => Option a -> a # sum :: Num a => Option a -> a # product :: Num a => Option a -> a #
Foldable ZipList	Since: base-4.9.0.0
Instance details Defined in Control.Applicative Methods fold :: Monoid m => ZipList m -> m # foldMap :: Monoid m => (a -> m) -> ZipList a -> m # foldMap' :: Monoid m => (a -> m) -> ZipList a -> m # foldr :: (a -> b -> b) -> b -> ZipList a -> b # foldr' :: (a -> b -> b) -> b -> ZipList a -> b # foldl :: (b -> a -> b) -> b -> ZipList a -> b # foldl' :: (b -> a -> b) -> b -> ZipList a -> b # foldr1 :: (a -> a -> a) -> ZipList a -> a # foldl1 :: (a -> a -> a) -> ZipList a -> a # toList :: ZipList a -> [a] # null :: ZipList a -> Bool # length :: ZipList a -> Int # elem :: Eq a => a -> ZipList a -> Bool # maximum :: Ord a => ZipList a -> a # minimum :: Ord a => ZipList a -> a # sum :: Num a => ZipList a -> a # product :: Num a => ZipList a -> a #
Foldable Identity	Since: base-4.8.0.0
Instance details Defined in Data.Functor.Identity Methods fold :: Monoid m => Identity m -> m # foldMap :: Monoid m => (a -> m) -> Identity a -> m # foldMap' :: Monoid m => (a -> m) -> Identity a -> m # foldr :: (a -> b -> b) -> b -> Identity a -> b # foldr' :: (a -> b -> b) -> b -> Identity a -> b # foldl :: (b -> a -> b) -> b -> Identity a -> b # foldl' :: (b -> a -> b) -> b -> Identity a -> b # foldr1 :: (a -> a -> a) -> Identity a -> a # foldl1 :: (a -> a -> a) -> Identity a -> a # toList :: Identity a -> [a] # null :: Identity a -> Bool # length :: Identity a -> Int # elem :: Eq a => a -> Identity a -> Bool # maximum :: Ord a => Identity a -> a # minimum :: Ord a => Identity a -> a # sum :: Num a => Identity a -> a # product :: Num a => Identity a -> a #
Foldable First	Since: base-4.8.0.0
Instance details Defined in Data.Foldable Methods fold :: Monoid m => First m -> m # foldMap :: Monoid m => (a -> m) -> First a -> m # foldMap' :: Monoid m => (a -> m) -> First a -> m # foldr :: (a -> b -> b) -> b -> First a -> b # foldr' :: (a -> b -> b) -> b -> First a -> b # foldl :: (b -> a -> b) -> b -> First a -> b # foldl' :: (b -> a -> b) -> b -> First a -> b # foldr1 :: (a -> a -> a) -> First a -> a # foldl1 :: (a -> a -> a) -> First a -> a # toList :: First a -> [a] # null :: First a -> Bool # length :: First a -> Int # elem :: Eq a => a -> First a -> Bool # maximum :: Ord a => First a -> a # minimum :: Ord a => First a -> a # sum :: Num a => First a -> a # product :: Num a => First a -> a #
Foldable Last	Since: base-4.8.0.0
Instance details Defined in Data.Foldable Methods fold :: Monoid m => Last m -> m # foldMap :: Monoid m => (a -> m) -> Last a -> m # foldMap' :: Monoid m => (a -> m) -> Last a -> m # foldr :: (a -> b -> b) -> b -> Last a -> b # foldr' :: (a -> b -> b) -> b -> Last a -> b # foldl :: (b -> a -> b) -> b -> Last a -> b # foldl' :: (b -> a -> b) -> b -> Last a -> b # foldr1 :: (a -> a -> a) -> Last a -> a # foldl1 :: (a -> a -> a) -> Last a -> a # toList :: Last a -> [a] # null :: Last a -> Bool # length :: Last a -> Int # elem :: Eq a => a -> Last a -> Bool # maximum :: Ord a => Last a -> a # minimum :: Ord a => Last a -> a # sum :: Num a => Last a -> a # product :: Num a => Last a -> a #
Foldable Dual	Since: base-4.8.0.0
Instance details Defined in Data.Foldable Methods fold :: Monoid m => Dual m -> m # foldMap :: Monoid m => (a -> m) -> Dual a -> m # foldMap' :: Monoid m => (a -> m) -> Dual a -> m # foldr :: (a -> b -> b) -> b -> Dual a -> b # foldr' :: (a -> b -> b) -> b -> Dual a -> b # foldl :: (b -> a -> b) -> b -> Dual a -> b # foldl' :: (b -> a -> b) -> b -> Dual a -> b # foldr1 :: (a -> a -> a) -> Dual a -> a # foldl1 :: (a -> a -> a) -> Dual a -> a # toList :: Dual a -> [a] # null :: Dual a -> Bool # length :: Dual a -> Int # elem :: Eq a => a -> Dual a -> Bool # maximum :: Ord a => Dual a -> a # minimum :: Ord a => Dual a -> a # sum :: Num a => Dual a -> a # product :: Num a => Dual a -> a #
Foldable Sum	Since: base-4.8.0.0
Instance details Defined in Data.Foldable Methods fold :: Monoid m => Sum m -> m # foldMap :: Monoid m => (a -> m) -> Sum a -> m # foldMap' :: Monoid m => (a -> m) -> Sum a -> m # foldr :: (a -> b -> b) -> b -> Sum a -> b # foldr' :: (a -> b -> b) -> b -> Sum a -> b # foldl :: (b -> a -> b) -> b -> Sum a -> b # foldl' :: (b -> a -> b) -> b -> Sum a -> b # foldr1 :: (a -> a -> a) -> Sum a -> a # foldl1 :: (a -> a -> a) -> Sum a -> a # toList :: Sum a -> [a] # null :: Sum a -> Bool # length :: Sum a -> Int # elem :: Eq a => a -> Sum a -> Bool # maximum :: Ord a => Sum a -> a # minimum :: Ord a => Sum a -> a # sum :: Num a => Sum a -> a # product :: Num a => Sum a -> a #
Foldable Product	Since: base-4.8.0.0
Instance details Defined in Data.Foldable Methods fold :: Monoid m => Product m -> m # foldMap :: Monoid m => (a -> m) -> Product a -> m # foldMap' :: Monoid m => (a -> m) -> Product a -> m # foldr :: (a -> b -> b) -> b -> Product a -> b # foldr' :: (a -> b -> b) -> b -> Product a -> b # foldl :: (b -> a -> b) -> b -> Product a -> b # foldl' :: (b -> a -> b) -> b -> Product a -> b # foldr1 :: (a -> a -> a) -> Product a -> a # foldl1 :: (a -> a -> a) -> Product a -> a # toList :: Product a -> [a] # null :: Product a -> Bool # length :: Product a -> Int # elem :: Eq a => a -> Product a -> Bool # maximum :: Ord a => Product a -> a # minimum :: Ord a => Product a -> a # sum :: Num a => Product a -> a # product :: Num a => Product a -> a #
Foldable Down	Since: base-4.12.0.0
Instance details Defined in Data.Foldable Methods fold :: Monoid m => Down m -> m # foldMap :: Monoid m => (a -> m) -> Down a -> m # foldMap' :: Monoid m => (a -> m) -> Down a -> m # foldr :: (a -> b -> b) -> b -> Down a -> b # foldr' :: (a -> b -> b) -> b -> Down a -> b # foldl :: (b -> a -> b) -> b -> Down a -> b # foldl' :: (b -> a -> b) -> b -> Down a -> b # foldr1 :: (a -> a -> a) -> Down a -> a # foldl1 :: (a -> a -> a) -> Down a -> a # toList :: Down a -> [a] # null :: Down a -> Bool # length :: Down a -> Int # elem :: Eq a => a -> Down a -> Bool # maximum :: Ord a => Down a -> a # minimum :: Ord a => Down a -> a # sum :: Num a => Down a -> a # product :: Num a => Down a -> a #
Foldable NonEmpty	Since: base-4.9.0.0
Instance details Defined in Data.Foldable Methods fold :: Monoid m => NonEmpty m -> m # foldMap :: Monoid m => (a -> m) -> NonEmpty a -> m # foldMap' :: Monoid m => (a -> m) -> NonEmpty a -> m # foldr :: (a -> b -> b) -> b -> NonEmpty a -> b # foldr' :: (a -> b -> b) -> b -> NonEmpty a -> b # foldl :: (b -> a -> b) -> b -> NonEmpty a -> b # foldl' :: (b -> a -> b) -> b -> NonEmpty a -> b # foldr1 :: (a -> a -> a) -> NonEmpty a -> a # foldl1 :: (a -> a -> a) -> NonEmpty a -> a # toList :: NonEmpty a -> [a] # null :: NonEmpty a -> Bool # length :: NonEmpty a -> Int # elem :: Eq a => a -> NonEmpty a -> Bool # maximum :: Ord a => NonEmpty a -> a # minimum :: Ord a => NonEmpty a -> a # sum :: Num a => NonEmpty a -> a # product :: Num a => NonEmpty a -> a #
Foldable IntMap	Folds in order of increasing key.
Instance details Defined in Data.IntMap.Internal Methods fold :: Monoid m => IntMap m -> m # foldMap :: Monoid m => (a -> m) -> IntMap a -> m # foldMap' :: Monoid m => (a -> m) -> IntMap a -> m # foldr :: (a -> b -> b) -> b -> IntMap a -> b # foldr' :: (a -> b -> b) -> b -> IntMap a -> b # foldl :: (b -> a -> b) -> b -> IntMap a -> b # foldl' :: (b -> a -> b) -> b -> IntMap a -> b # foldr1 :: (a -> a -> a) -> IntMap a -> a # foldl1 :: (a -> a -> a) -> IntMap a -> a # toList :: IntMap a -> [a] # null :: IntMap a -> Bool # length :: IntMap a -> Int # elem :: Eq a => a -> IntMap a -> Bool # maximum :: Ord a => IntMap a -> a # minimum :: Ord a => IntMap a -> a # sum :: Num a => IntMap a -> a # product :: Num a => IntMap a -> a #
Foldable SCC	Since: containers-0.5.9
Instance details Defined in Data.Graph Methods fold :: Monoid m => SCC m -> m # foldMap :: Monoid m => (a -> m) -> SCC a -> m # foldMap' :: Monoid m => (a -> m) -> SCC a -> m # foldr :: (a -> b -> b) -> b -> SCC a -> b # foldr' :: (a -> b -> b) -> b -> SCC a -> b # foldl :: (b -> a -> b) -> b -> SCC a -> b # foldl' :: (b -> a -> b) -> b -> SCC a -> b # foldr1 :: (a -> a -> a) -> SCC a -> a # foldl1 :: (a -> a -> a) -> SCC a -> a # toList :: SCC a -> [a] # null :: SCC a -> Bool # length :: SCC a -> Int # elem :: Eq a => a -> SCC a -> Bool # maximum :: Ord a => SCC a -> a # minimum :: Ord a => SCC a -> a # sum :: Num a => SCC a -> a # product :: Num a => SCC a -> a #
Foldable Tree
Instance details Defined in Data.Tree Methods fold :: Monoid m => Tree m -> m # foldMap :: Monoid m => (a -> m) -> Tree a -> m # foldMap' :: Monoid m => (a -> m) -> Tree a -> m # foldr :: (a -> b -> b) -> b -> Tree a -> b # foldr' :: (a -> b -> b) -> b -> Tree a -> b # foldl :: (b -> a -> b) -> b -> Tree a -> b # foldl' :: (b -> a -> b) -> b -> Tree a -> b # foldr1 :: (a -> a -> a) -> Tree a -> a # foldl1 :: (a -> a -> a) -> Tree a -> a # toList :: Tree a -> [a] # null :: Tree a -> Bool # length :: Tree a -> Int # elem :: Eq a => a -> Tree a -> Bool # maximum :: Ord a => Tree a -> a # minimum :: Ord a => Tree a -> a # sum :: Num a => Tree a -> a # product :: Num a => Tree a -> a #
Foldable Seq
Instance details Defined in Data.Sequence.Internal Methods fold :: Monoid m => Seq m -> m # foldMap :: Monoid m => (a -> m) -> Seq a -> m # foldMap' :: Monoid m => (a -> m) -> Seq a -> m # foldr :: (a -> b -> b) -> b -> Seq a -> b # foldr' :: (a -> b -> b) -> b -> Seq a -> b # foldl :: (b -> a -> b) -> b -> Seq a -> b # foldl' :: (b -> a -> b) -> b -> Seq a -> b # foldr1 :: (a -> a -> a) -> Seq a -> a # foldl1 :: (a -> a -> a) -> Seq a -> a # toList :: Seq a -> [a] # null :: Seq a -> Bool # length :: Seq a -> Int # elem :: Eq a => a -> Seq a -> Bool # maximum :: Ord a => Seq a -> a # minimum :: Ord a => Seq a -> a # sum :: Num a => Seq a -> a # product :: Num a => Seq a -> a #
Foldable FingerTree
Instance details Defined in Data.Sequence.Internal Methods fold :: Monoid m => FingerTree m -> m # foldMap :: Monoid m => (a -> m) -> FingerTree a -> m # foldMap' :: Monoid m => (a -> m) -> FingerTree a -> m # foldr :: (a -> b -> b) -> b -> FingerTree a -> b # foldr' :: (a -> b -> b) -> b -> FingerTree a -> b # foldl :: (b -> a -> b) -> b -> FingerTree a -> b # foldl' :: (b -> a -> b) -> b -> FingerTree a -> b # foldr1 :: (a -> a -> a) -> FingerTree a -> a # foldl1 :: (a -> a -> a) -> FingerTree a -> a # toList :: FingerTree a -> [a] # null :: FingerTree a -> Bool # length :: FingerTree a -> Int # elem :: Eq a => a -> FingerTree a -> Bool # maximum :: Ord a => FingerTree a -> a # minimum :: Ord a => FingerTree a -> a # sum :: Num a => FingerTree a -> a # product :: Num a => FingerTree a -> a #
Foldable Digit
Instance details Defined in Data.Sequence.Internal Methods fold :: Monoid m => Digit m -> m # foldMap :: Monoid m => (a -> m) -> Digit a -> m # foldMap' :: Monoid m => (a -> m) -> Digit a -> m # foldr :: (a -> b -> b) -> b -> Digit a -> b # foldr' :: (a -> b -> b) -> b -> Digit a -> b # foldl :: (b -> a -> b) -> b -> Digit a -> b # foldl' :: (b -> a -> b) -> b -> Digit a -> b # foldr1 :: (a -> a -> a) -> Digit a -> a # foldl1 :: (a -> a -> a) -> Digit a -> a # toList :: Digit a -> [a] # null :: Digit a -> Bool # length :: Digit a -> Int # elem :: Eq a => a -> Digit a -> Bool # maximum :: Ord a => Digit a -> a # minimum :: Ord a => Digit a -> a # sum :: Num a => Digit a -> a # product :: Num a => Digit a -> a #
Foldable Node
Instance details Defined in Data.Sequence.Internal Methods fold :: Monoid m => Node m -> m # foldMap :: Monoid m => (a -> m) -> Node a -> m # foldMap' :: Monoid m => (a -> m) -> Node a -> m # foldr :: (a -> b -> b) -> b -> Node a -> b # foldr' :: (a -> b -> b) -> b -> Node a -> b # foldl :: (b -> a -> b) -> b -> Node a -> b # foldl' :: (b -> a -> b) -> b -> Node a -> b # foldr1 :: (a -> a -> a) -> Node a -> a # foldl1 :: (a -> a -> a) -> Node a -> a # toList :: Node a -> [a] # null :: Node a -> Bool # length :: Node a -> Int # elem :: Eq a => a -> Node a -> Bool # maximum :: Ord a => Node a -> a # minimum :: Ord a => Node a -> a # sum :: Num a => Node a -> a # product :: Num a => Node a -> a #
Foldable Elem
Instance details Defined in Data.Sequence.Internal Methods fold :: Monoid m => Elem m -> m # foldMap :: Monoid m => (a -> m) -> Elem a -> m # foldMap' :: Monoid m => (a -> m) -> Elem a -> m # foldr :: (a -> b -> b) -> b -> Elem a -> b # foldr' :: (a -> b -> b) -> b -> Elem a -> b # foldl :: (b -> a -> b) -> b -> Elem a -> b # foldl' :: (b -> a -> b) -> b -> Elem a -> b # foldr1 :: (a -> a -> a) -> Elem a -> a # foldl1 :: (a -> a -> a) -> Elem a -> a # toList :: Elem a -> [a] # null :: Elem a -> Bool # length :: Elem a -> Int # elem :: Eq a => a -> Elem a -> Bool # maximum :: Ord a => Elem a -> a # minimum :: Ord a => Elem a -> a # sum :: Num a => Elem a -> a # product :: Num a => Elem a -> a #
Foldable ViewL
Instance details Defined in Data.Sequence.Internal Methods fold :: Monoid m => ViewL m -> m # foldMap :: Monoid m => (a -> m) -> ViewL a -> m # foldMap' :: Monoid m => (a -> m) -> ViewL a -> m # foldr :: (a -> b -> b) -> b -> ViewL a -> b # foldr' :: (a -> b -> b) -> b -> ViewL a -> b # foldl :: (b -> a -> b) -> b -> ViewL a -> b # foldl' :: (b -> a -> b) -> b -> ViewL a -> b # foldr1 :: (a -> a -> a) -> ViewL a -> a # foldl1 :: (a -> a -> a) -> ViewL a -> a # toList :: ViewL a -> [a] # null :: ViewL a -> Bool # length :: ViewL a -> Int # elem :: Eq a => a -> ViewL a -> Bool # maximum :: Ord a => ViewL a -> a # minimum :: Ord a => ViewL a -> a # sum :: Num a => ViewL a -> a # product :: Num a => ViewL a -> a #
Foldable ViewR
Instance details Defined in Data.Sequence.Internal Methods fold :: Monoid m => ViewR m -> m # foldMap :: Monoid m => (a -> m) -> ViewR a -> m # foldMap' :: Monoid m => (a -> m) -> ViewR a -> m # foldr :: (a -> b -> b) -> b -> ViewR a -> b # foldr' :: (a -> b -> b) -> b -> ViewR a -> b # foldl :: (b -> a -> b) -> b -> ViewR a -> b # foldl' :: (b -> a -> b) -> b -> ViewR a -> b # foldr1 :: (a -> a -> a) -> ViewR a -> a # foldl1 :: (a -> a -> a) -> ViewR a -> a # toList :: ViewR a -> [a] # null :: ViewR a -> Bool # length :: ViewR a -> Int # elem :: Eq a => a -> ViewR a -> Bool # maximum :: Ord a => ViewR a -> a # minimum :: Ord a => ViewR a -> a # sum :: Num a => ViewR a -> a # product :: Num a => ViewR a -> a #
Foldable Set	Folds in order of increasing key.
Instance details Defined in Data.Set.Internal Methods fold :: Monoid m => Set m -> m # foldMap :: Monoid m => (a -> m) -> Set a -> m # foldMap' :: Monoid m => (a -> m) -> Set a -> m # foldr :: (a -> b -> b) -> b -> Set a -> b # foldr' :: (a -> b -> b) -> b -> Set a -> b # foldl :: (b -> a -> b) -> b -> Set a -> b # foldl' :: (b -> a -> b) -> b -> Set a -> b # foldr1 :: (a -> a -> a) -> Set a -> a # foldl1 :: (a -> a -> a) -> Set a -> a # toList :: Set a -> [a] # null :: Set a -> Bool # length :: Set a -> Int # elem :: Eq a => a -> Set a -> Bool # maximum :: Ord a => Set a -> a # minimum :: Ord a => Set a -> a # sum :: Num a => Set a -> a # product :: Num a => Set a -> a #
Foldable DNonEmpty
Instance details Defined in Data.DList.DNonEmpty.Internal Methods fold :: Monoid m => DNonEmpty m -> m # foldMap :: Monoid m => (a -> m) -> DNonEmpty a -> m # foldMap' :: Monoid m => (a -> m) -> DNonEmpty a -> m # foldr :: (a -> b -> b) -> b -> DNonEmpty a -> b # foldr' :: (a -> b -> b) -> b -> DNonEmpty a -> b # foldl :: (b -> a -> b) -> b -> DNonEmpty a -> b # foldl' :: (b -> a -> b) -> b -> DNonEmpty a -> b # foldr1 :: (a -> a -> a) -> DNonEmpty a -> a # foldl1 :: (a -> a -> a) -> DNonEmpty a -> a # toList :: DNonEmpty a -> [a] # null :: DNonEmpty a -> Bool # length :: DNonEmpty a -> Int # elem :: Eq a => a -> DNonEmpty a -> Bool # maximum :: Ord a => DNonEmpty a -> a # minimum :: Ord a => DNonEmpty a -> a # sum :: Num a => DNonEmpty a -> a # product :: Num a => DNonEmpty a -> a #
Foldable DList
Instance details Defined in Data.DList.Internal Methods fold :: Monoid m => DList m -> m # foldMap :: Monoid m => (a -> m) -> DList a -> m # foldMap' :: Monoid m => (a -> m) -> DList a -> m # foldr :: (a -> b -> b) -> b -> DList a -> b # foldr' :: (a -> b -> b) -> b -> DList a -> b # foldl :: (b -> a -> b) -> b -> DList a -> b # foldl' :: (b -> a -> b) -> b -> DList a -> b # foldr1 :: (a -> a -> a) -> DList a -> a # foldl1 :: (a -> a -> a) -> DList a -> a # toList :: DList a -> [a] # null :: DList a -> Bool # length :: DList a -> Int # elem :: Eq a => a -> DList a -> Bool # maximum :: Ord a => DList a -> a # minimum :: Ord a => DList a -> a # sum :: Num a => DList a -> a # product :: Num a => DList a -> a #
Foldable Doc
Instance details Defined in Text.DocLayout Methods fold :: Monoid m => Doc m -> m # foldMap :: Monoid m => (a -> m) -> Doc a -> m # foldMap' :: Monoid m => (a -> m) -> Doc a -> m # foldr :: (a -> b -> b) -> b -> Doc a -> b # foldr' :: (a -> b -> b) -> b -> Doc a -> b # foldl :: (b -> a -> b) -> b -> Doc a -> b # foldl' :: (b -> a -> b) -> b -> Doc a -> b # foldr1 :: (a -> a -> a) -> Doc a -> a # foldl1 :: (a -> a -> a) -> Doc a -> a # toList :: Doc a -> [a] # null :: Doc a -> Bool # length :: Doc a -> Int # elem :: Eq a => a -> Doc a -> Bool # maximum :: Ord a => Doc a -> a # minimum :: Ord a => Doc a -> a # sum :: Num a => Doc a -> a # product :: Num a => Doc a -> a #
Foldable Hashed
Instance details Defined in Data.Hashable.Class Methods fold :: Monoid m => Hashed m -> m # foldMap :: Monoid m => (a -> m) -> Hashed a -> m # foldMap' :: Monoid m => (a -> m) -> Hashed a -> m # foldr :: (a -> b -> b) -> b -> Hashed a -> b # foldr' :: (a -> b -> b) -> b -> Hashed a -> b # foldl :: (b -> a -> b) -> b -> Hashed a -> b # foldl' :: (b -> a -> b) -> b -> Hashed a -> b # foldr1 :: (a -> a -> a) -> Hashed a -> a # foldl1 :: (a -> a -> a) -> Hashed a -> a # toList :: Hashed a -> [a] # null :: Hashed a -> Bool # length :: Hashed a -> Int # elem :: Eq a => a -> Hashed a -> Bool # maximum :: Ord a => Hashed a -> a # minimum :: Ord a => Hashed a -> a # sum :: Num a => Hashed a -> a # product :: Num a => Hashed a -> a #
Foldable HistoriedResponse
Instance details Defined in Network.HTTP.Client Methods fold :: Monoid m => HistoriedResponse m -> m # foldMap :: Monoid m => (a -> m) -> HistoriedResponse a -> m # foldMap' :: Monoid m => (a -> m) -> HistoriedResponse a -> m # foldr :: (a -> b -> b) -> b -> HistoriedResponse a -> b # foldr' :: (a -> b -> b) -> b -> HistoriedResponse a -> b # foldl :: (b -> a -> b) -> b -> HistoriedResponse a -> b # foldl' :: (b -> a -> b) -> b -> HistoriedResponse a -> b # foldr1 :: (a -> a -> a) -> HistoriedResponse a -> a # foldl1 :: (a -> a -> a) -> HistoriedResponse a -> a # toList :: HistoriedResponse a -> [a] # null :: HistoriedResponse a -> Bool # length :: HistoriedResponse a -> Int # elem :: Eq a => a -> HistoriedResponse a -> Bool # maximum :: Ord a => HistoriedResponse a -> a # minimum :: Ord a => HistoriedResponse a -> a # sum :: Num a => HistoriedResponse a -> a # product :: Num a => HistoriedResponse a -> a #
Foldable Response
Instance details Defined in Network.HTTP.Client.Types Methods fold :: Monoid m => Response m -> m # foldMap :: Monoid m => (a -> m) -> Response a -> m # foldMap' :: Monoid m => (a -> m) -> Response a -> m # foldr :: (a -> b -> b) -> b -> Response a -> b # foldr' :: (a -> b -> b) -> b -> Response a -> b # foldl :: (b -> a -> b) -> b -> Response a -> b # foldl' :: (b -> a -> b) -> b -> Response a -> b # foldr1 :: (a -> a -> a) -> Response a -> a # foldl1 :: (a -> a -> a) -> Response a -> a # toList :: Response a -> [a] # null :: Response a -> Bool # length :: Response a -> Int # elem :: Eq a => a -> Response a -> Bool # maximum :: Ord a => Response a -> a # minimum :: Ord a => Response a -> a # sum :: Num a => Response a -> a # product :: Num a => Response a -> a #
Foldable Root
Instance details Defined in Numeric.RootFinding Methods fold :: Monoid m => Root m -> m # foldMap :: Monoid m => (a -> m) -> Root a -> m # foldMap' :: Monoid m => (a -> m) -> Root a -> m # foldr :: (a -> b -> b) -> b -> Root a -> b # foldr' :: (a -> b -> b) -> b -> Root a -> b # foldl :: (b -> a -> b) -> b -> Root a -> b # foldl' :: (b -> a -> b) -> b -> Root a -> b # foldr1 :: (a -> a -> a) -> Root a -> a # foldl1 :: (a -> a -> a) -> Root a -> a # toList :: Root a -> [a] # null :: Root a -> Bool # length :: Root a -> Int # elem :: Eq a => a -> Root a -> Bool # maximum :: Ord a => Root a -> a # minimum :: Ord a => Root a -> a # sum :: Num a => Root a -> a # product :: Num a => Root a -> a #
Foldable SimpleDocStream	Collect all annotations from a document.
Instance details Defined in Prettyprinter.Internal Methods fold :: Monoid m => SimpleDocStream m -> m # foldMap :: Monoid m => (a -> m) -> SimpleDocStream a -> m # foldMap' :: Monoid m => (a -> m) -> SimpleDocStream a -> m # foldr :: (a -> b -> b) -> b -> SimpleDocStream a -> b # foldr' :: (a -> b -> b) -> b -> SimpleDocStream a -> b # foldl :: (b -> a -> b) -> b -> SimpleDocStream a -> b # foldl' :: (b -> a -> b) -> b -> SimpleDocStream a -> b # foldr1 :: (a -> a -> a) -> SimpleDocStream a -> a # foldl1 :: (a -> a -> a) -> SimpleDocStream a -> a # toList :: SimpleDocStream a -> [a] # null :: SimpleDocStream a -> Bool # length :: SimpleDocStream a -> Int # elem :: Eq a => a -> SimpleDocStream a -> Bool # maximum :: Ord a => SimpleDocStream a -> a # minimum :: Ord a => SimpleDocStream a -> a # sum :: Num a => SimpleDocStream a -> a # product :: Num a => SimpleDocStream a -> a #
Foldable SmallArray
Instance details Defined in Data.Primitive.SmallArray Methods fold :: Monoid m => SmallArray m -> m # foldMap :: Monoid m => (a -> m) -> SmallArray a -> m # foldMap' :: Monoid m => (a -> m) -> SmallArray a -> m # foldr :: (a -> b -> b) -> b -> SmallArray a -> b # foldr' :: (a -> b -> b) -> b -> SmallArray a -> b # foldl :: (b -> a -> b) -> b -> SmallArray a -> b # foldl' :: (b -> a -> b) -> b -> SmallArray a -> b # foldr1 :: (a -> a -> a) -> SmallArray a -> a # foldl1 :: (a -> a -> a) -> SmallArray a -> a # toList :: SmallArray a -> [a] # null :: SmallArray a -> Bool # length :: SmallArray a -> Int # elem :: Eq a => a -> SmallArray a -> Bool # maximum :: Ord a => SmallArray a -> a # minimum :: Ord a => SmallArray a -> a # sum :: Num a => SmallArray a -> a # product :: Num a => SmallArray a -> a #
Foldable Array
Instance details Defined in Data.Primitive.Array Methods fold :: Monoid m => Array m -> m # foldMap :: Monoid m => (a -> m) -> Array a -> m # foldMap' :: Monoid m => (a -> m) -> Array a -> m # foldr :: (a -> b -> b) -> b -> Array a -> b # foldr' :: (a -> b -> b) -> b -> Array a -> b # foldl :: (b -> a -> b) -> b -> Array a -> b # foldl' :: (b -> a -> b) -> b -> Array a -> b # foldr1 :: (a -> a -> a) -> Array a -> a # foldl1 :: (a -> a -> a) -> Array a -> a # toList :: Array a -> [a] # null :: Array a -> Bool # length :: Array a -> Int # elem :: Eq a => a -> Array a -> Bool # maximum :: Ord a => Array a -> a # minimum :: Ord a => Array a -> a # sum :: Num a => Array a -> a # product :: Num a => Array a -> a #
Foldable Maybe
Instance details Defined in Data.Strict.Maybe Methods fold :: Monoid m => Maybe m -> m # foldMap :: Monoid m => (a -> m) -> Maybe a -> m # foldMap' :: Monoid m => (a -> m) -> Maybe a -> m # foldr :: (a -> b -> b) -> b -> Maybe a -> b # foldr' :: (a -> b -> b) -> b -> Maybe a -> b # foldl :: (b -> a -> b) -> b -> Maybe a -> b # foldl' :: (b -> a -> b) -> b -> Maybe a -> b # foldr1 :: (a -> a -> a) -> Maybe a -> a # foldl1 :: (a -> a -> a) -> Maybe a -> a # toList :: Maybe a -> [a] # null :: Maybe a -> Bool # length :: Maybe a -> Int # elem :: Eq a => a -> Maybe a -> Bool # maximum :: Ord a => Maybe a -> a # minimum :: Ord a => Maybe a -> a # sum :: Num a => Maybe a -> a # product :: Num a => Maybe a -> a #
Foldable HashSet
Instance details Defined in Data.HashSet.Internal Methods fold :: Monoid m => HashSet m -> m # foldMap :: Monoid m => (a -> m) -> HashSet a -> m # foldMap' :: Monoid m => (a -> m) -> HashSet a -> m # foldr :: (a -> b -> b) -> b -> HashSet a -> b # foldr' :: (a -> b -> b) -> b -> HashSet a -> b # foldl :: (b -> a -> b) -> b -> HashSet a -> b # foldl' :: (b -> a -> b) -> b -> HashSet a -> b # foldr1 :: (a -> a -> a) -> HashSet a -> a # foldl1 :: (a -> a -> a) -> HashSet a -> a # toList :: HashSet a -> [a] # null :: HashSet a -> Bool # length :: HashSet a -> Int # elem :: Eq a => a -> HashSet a -> Bool # maximum :: Ord a => HashSet a -> a # minimum :: Ord a => HashSet a -> a # sum :: Num a => HashSet a -> a # product :: Num a => HashSet a -> a #
Foldable Vector
Instance details Defined in Data.Vector Methods fold :: Monoid m => Vector m -> m # foldMap :: Monoid m => (a -> m) -> Vector a -> m # foldMap' :: Monoid m => (a -> m) -> Vector a -> m # foldr :: (a -> b -> b) -> b -> Vector a -> b # foldr' :: (a -> b -> b) -> b -> Vector a -> b # foldl :: (b -> a -> b) -> b -> Vector a -> b # foldl' :: (b -> a -> b) -> b -> Vector a -> b # foldr1 :: (a -> a -> a) -> Vector a -> a # foldl1 :: (a -> a -> a) -> Vector a -> a # toList :: Vector a -> [a] # null :: Vector a -> Bool # length :: Vector a -> Int # elem :: Eq a => a -> Vector a -> Bool # maximum :: Ord a => Vector a -> a # minimum :: Ord a => Vector a -> a # sum :: Num a => Vector a -> a # product :: Num a => Vector a -> a #
Foldable FormResult	Since: yesod-form-1.4.5
Instance details Defined in Yesod.Form.Types Methods fold :: Monoid m => FormResult m -> m # foldMap :: Monoid m => (a -> m) -> FormResult a -> m # foldMap' :: Monoid m => (a -> m) -> FormResult a -> m # foldr :: (a -> b -> b) -> b -> FormResult a -> b # foldr' :: (a -> b -> b) -> b -> FormResult a -> b # foldl :: (b -> a -> b) -> b -> FormResult a -> b # foldl' :: (b -> a -> b) -> b -> FormResult a -> b # foldr1 :: (a -> a -> a) -> FormResult a -> a # foldl1 :: (a -> a -> a) -> FormResult a -> a # toList :: FormResult a -> [a] # null :: FormResult a -> Bool # length :: FormResult a -> Int # elem :: Eq a => a -> FormResult a -> Bool # maximum :: Ord a => FormResult a -> a # minimum :: Ord a => FormResult a -> a # sum :: Num a => FormResult a -> a # product :: Num a => FormResult a -> a #
Foldable (Either a)	Since: base-4.7.0.0
Instance details Defined in Data.Foldable Methods fold :: Monoid m => Either a m -> m # foldMap :: Monoid m => (a0 -> m) -> Either a a0 -> m # foldMap' :: Monoid m => (a0 -> m) -> Either a a0 -> m # foldr :: (a0 -> b -> b) -> b -> Either a a0 -> b # foldr' :: (a0 -> b -> b) -> b -> Either a a0 -> b # foldl :: (b -> a0 -> b) -> b -> Either a a0 -> b # foldl' :: (b -> a0 -> b) -> b -> Either a a0 -> b # foldr1 :: (a0 -> a0 -> a0) -> Either a a0 -> a0 # foldl1 :: (a0 -> a0 -> a0) -> Either a a0 -> a0 # toList :: Either a a0 -> [a0] # null :: Either a a0 -> Bool # length :: Either a a0 -> Int # elem :: Eq a0 => a0 -> Either a a0 -> Bool # maximum :: Ord a0 => Either a a0 -> a0 # minimum :: Ord a0 => Either a a0 -> a0 # sum :: Num a0 => Either a a0 -> a0 # product :: Num a0 => Either a a0 -> a0 #
Foldable (V1 :: Type -> Type)	Since: base-4.9.0.0
Instance details Defined in Data.Foldable Methods fold :: Monoid m => V1 m -> m # foldMap :: Monoid m => (a -> m) -> V1 a -> m # foldMap' :: Monoid m => (a -> m) -> V1 a -> m # foldr :: (a -> b -> b) -> b -> V1 a -> b # foldr' :: (a -> b -> b) -> b -> V1 a -> b # foldl :: (b -> a -> b) -> b -> V1 a -> b # foldl' :: (b -> a -> b) -> b -> V1 a -> b # foldr1 :: (a -> a -> a) -> V1 a -> a # foldl1 :: (a -> a -> a) -> V1 a -> a # toList :: V1 a -> [a] # null :: V1 a -> Bool # length :: V1 a -> Int # elem :: Eq a => a -> V1 a -> Bool # maximum :: Ord a => V1 a -> a # minimum :: Ord a => V1 a -> a # sum :: Num a => V1 a -> a # product :: Num a => V1 a -> a #
Foldable (U1 :: Type -> Type)	Since: base-4.9.0.0
Instance details Defined in Data.Foldable Methods fold :: Monoid m => U1 m -> m # foldMap :: Monoid m => (a -> m) -> U1 a -> m # foldMap' :: Monoid m => (a -> m) -> U1 a -> m # foldr :: (a -> b -> b) -> b -> U1 a -> b # foldr' :: (a -> b -> b) -> b -> U1 a -> b # foldl :: (b -> a -> b) -> b -> U1 a -> b # foldl' :: (b -> a -> b) -> b -> U1 a -> b # foldr1 :: (a -> a -> a) -> U1 a -> a # foldl1 :: (a -> a -> a) -> U1 a -> a # toList :: U1 a -> [a] # null :: U1 a -> Bool # length :: U1 a -> Int # elem :: Eq a => a -> U1 a -> Bool # maximum :: Ord a => U1 a -> a # minimum :: Ord a => U1 a -> a # sum :: Num a => U1 a -> a # product :: Num a => U1 a -> a #
Foldable (UAddr :: Type -> Type)	Since: base-4.9.0.0
Instance details Defined in Data.Foldable Methods fold :: Monoid m => UAddr m -> m # foldMap :: Monoid m => (a -> m) -> UAddr a -> m # foldMap' :: Monoid m => (a -> m) -> UAddr a -> m # foldr :: (a -> b -> b) -> b -> UAddr a -> b # foldr' :: (a -> b -> b) -> b -> UAddr a -> b # foldl :: (b -> a -> b) -> b -> UAddr a -> b # foldl' :: (b -> a -> b) -> b -> UAddr a -> b # foldr1 :: (a -> a -> a) -> UAddr a -> a # foldl1 :: (a -> a -> a) -> UAddr a -> a # toList :: UAddr a -> [a] # null :: UAddr a -> Bool # length :: UAddr a -> Int # elem :: Eq a => a -> UAddr a -> Bool # maximum :: Ord a => UAddr a -> a # minimum :: Ord a => UAddr a -> a # sum :: Num a => UAddr a -> a # product :: Num a => UAddr a -> a #
Foldable (UChar :: Type -> Type)	Since: base-4.9.0.0
Instance details Defined in Data.Foldable Methods fold :: Monoid m => UChar m -> m # foldMap :: Monoid m => (a -> m) -> UChar a -> m # foldMap' :: Monoid m => (a -> m) -> UChar a -> m # foldr :: (a -> b -> b) -> b -> UChar a -> b # foldr' :: (a -> b -> b) -> b -> UChar a -> b # foldl :: (b -> a -> b) -> b -> UChar a -> b # foldl' :: (b -> a -> b) -> b -> UChar a -> b # foldr1 :: (a -> a -> a) -> UChar a -> a # foldl1 :: (a -> a -> a) -> UChar a -> a # toList :: UChar a -> [a] # null :: UChar a -> Bool # length :: UChar a -> Int # elem :: Eq a => a -> UChar a -> Bool # maximum :: Ord a => UChar a -> a # minimum :: Ord a => UChar a -> a # sum :: Num a => UChar a -> a # product :: Num a => UChar a -> a #
Foldable (UDouble :: Type -> Type)	Since: base-4.9.0.0
Instance details Defined in Data.Foldable Methods fold :: Monoid m => UDouble m -> m # foldMap :: Monoid m => (a -> m) -> UDouble a -> m # foldMap' :: Monoid m => (a -> m) -> UDouble a -> m # foldr :: (a -> b -> b) -> b -> UDouble a -> b # foldr' :: (a -> b -> b) -> b -> UDouble a -> b # foldl :: (b -> a -> b) -> b -> UDouble a -> b # foldl' :: (b -> a -> b) -> b -> UDouble a -> b # foldr1 :: (a -> a -> a) -> UDouble a -> a # foldl1 :: (a -> a -> a) -> UDouble a -> a # toList :: UDouble a -> [a] # null :: UDouble a -> Bool # length :: UDouble a -> Int # elem :: Eq a => a -> UDouble a -> Bool # maximum :: Ord a => UDouble a -> a # minimum :: Ord a => UDouble a -> a # sum :: Num a => UDouble a -> a # product :: Num a => UDouble a -> a #
Foldable (UFloat :: Type -> Type)	Since: base-4.9.0.0
Instance details Defined in Data.Foldable Methods fold :: Monoid m => UFloat m -> m # foldMap :: Monoid m => (a -> m) -> UFloat a -> m # foldMap' :: Monoid m => (a -> m) -> UFloat a -> m # foldr :: (a -> b -> b) -> b -> UFloat a -> b # foldr' :: (a -> b -> b) -> b -> UFloat a -> b # foldl :: (b -> a -> b) -> b -> UFloat a -> b # foldl' :: (b -> a -> b) -> b -> UFloat a -> b # foldr1 :: (a -> a -> a) -> UFloat a -> a # foldl1 :: (a -> a -> a) -> UFloat a -> a # toList :: UFloat a -> [a] # null :: UFloat a -> Bool # length :: UFloat a -> Int # elem :: Eq a => a -> UFloat a -> Bool # maximum :: Ord a => UFloat a -> a # minimum :: Ord a => UFloat a -> a # sum :: Num a => UFloat a -> a # product :: Num a => UFloat a -> a #
Foldable (UInt :: Type -> Type)	Since: base-4.9.0.0
Instance details Defined in Data.Foldable Methods fold :: Monoid m => UInt m -> m # foldMap :: Monoid m => (a -> m) -> UInt a -> m # foldMap' :: Monoid m => (a -> m) -> UInt a -> m # foldr :: (a -> b -> b) -> b -> UInt a -> b # foldr' :: (a -> b -> b) -> b -> UInt a -> b # foldl :: (b -> a -> b) -> b -> UInt a -> b # foldl' :: (b -> a -> b) -> b -> UInt a -> b # foldr1 :: (a -> a -> a) -> UInt a -> a # foldl1 :: (a -> a -> a) -> UInt a -> a # toList :: UInt a -> [a] # null :: UInt a -> Bool # length :: UInt a -> Int # elem :: Eq a => a -> UInt a -> Bool # maximum :: Ord a => UInt a -> a # minimum :: Ord a => UInt a -> a # sum :: Num a => UInt a -> a # product :: Num a => UInt a -> a #
Foldable (UWord :: Type -> Type)	Since: base-4.9.0.0
Instance details Defined in Data.Foldable Methods fold :: Monoid m => UWord m -> m # foldMap :: Monoid m => (a -> m) -> UWord a -> m # foldMap' :: Monoid m => (a -> m) -> UWord a -> m # foldr :: (a -> b -> b) -> b -> UWord a -> b # foldr' :: (a -> b -> b) -> b -> UWord a -> b # foldl :: (b -> a -> b) -> b -> UWord a -> b # foldl' :: (b -> a -> b) -> b -> UWord a -> b # foldr1 :: (a -> a -> a) -> UWord a -> a # foldl1 :: (a -> a -> a) -> UWord a -> a # toList :: UWord a -> [a] # null :: UWord a -> Bool # length :: UWord a -> Int # elem :: Eq a => a -> UWord a -> Bool # maximum :: Ord a => UWord a -> a # minimum :: Ord a => UWord a -> a # sum :: Num a => UWord a -> a # product :: Num a => UWord a -> a #
Foldable ((,) a)	Since: base-4.7.0.0
Instance details Defined in Data.Foldable Methods fold :: Monoid m => (a, m) -> m # foldMap :: Monoid m => (a0 -> m) -> (a, a0) -> m # foldMap' :: Monoid m => (a0 -> m) -> (a, a0) -> m # foldr :: (a0 -> b -> b) -> b -> (a, a0) -> b # foldr' :: (a0 -> b -> b) -> b -> (a, a0) -> b # foldl :: (b -> a0 -> b) -> b -> (a, a0) -> b # foldl' :: (b -> a0 -> b) -> b -> (a, a0) -> b # foldr1 :: (a0 -> a0 -> a0) -> (a, a0) -> a0 # foldl1 :: (a0 -> a0 -> a0) -> (a, a0) -> a0 # toList :: (a, a0) -> [a0] # null :: (a, a0) -> Bool # length :: (a, a0) -> Int # elem :: Eq a0 => a0 -> (a, a0) -> Bool # maximum :: Ord a0 => (a, a0) -> a0 # minimum :: Ord a0 => (a, a0) -> a0 # sum :: Num a0 => (a, a0) -> a0 # product :: Num a0 => (a, a0) -> a0 #
Foldable (HashMap k)
Instance details Defined in Data.HashMap.Internal Methods fold :: Monoid m => HashMap k m -> m # foldMap :: Monoid m => (a -> m) -> HashMap k a -> m # foldMap' :: Monoid m => (a -> m) -> HashMap k a -> m # foldr :: (a -> b -> b) -> b -> HashMap k a -> b # foldr' :: (a -> b -> b) -> b -> HashMap k a -> b # foldl :: (b -> a -> b) -> b -> HashMap k a -> b # foldl' :: (b -> a -> b) -> b -> HashMap k a -> b # foldr1 :: (a -> a -> a) -> HashMap k a -> a # foldl1 :: (a -> a -> a) -> HashMap k a -> a # toList :: HashMap k a -> [a] # null :: HashMap k a -> Bool # length :: HashMap k a -> Int # elem :: Eq a => a -> HashMap k a -> Bool # maximum :: Ord a => HashMap k a -> a # minimum :: Ord a => HashMap k a -> a # sum :: Num a => HashMap k a -> a # product :: Num a => HashMap k a -> a #
Foldable (Map k)	Folds in order of increasing key.
Instance details Defined in Data.Map.Internal Methods fold :: Monoid m => Map k m -> m # foldMap :: Monoid m => (a -> m) -> Map k a -> m # foldMap' :: Monoid m => (a -> m) -> Map k a -> m # foldr :: (a -> b -> b) -> b -> Map k a -> b # foldr' :: (a -> b -> b) -> b -> Map k a -> b # foldl :: (b -> a -> b) -> b -> Map k a -> b # foldl' :: (b -> a -> b) -> b -> Map k a -> b # foldr1 :: (a -> a -> a) -> Map k a -> a # foldl1 :: (a -> a -> a) -> Map k a -> a # toList :: Map k a -> [a] # null :: Map k a -> Bool # length :: Map k a -> Int # elem :: Eq a => a -> Map k a -> Bool # maximum :: Ord a => Map k a -> a # minimum :: Ord a => Map k a -> a # sum :: Num a => Map k a -> a # product :: Num a => Map k a -> a #
Foldable (Array i)	Since: base-4.8.0.0
Instance details Defined in Data.Foldable Methods fold :: Monoid m => Array i m -> m # foldMap :: Monoid m => (a -> m) -> Array i a -> m # foldMap' :: Monoid m => (a -> m) -> Array i a -> m # foldr :: (a -> b -> b) -> b -> Array i a -> b # foldr' :: (a -> b -> b) -> b -> Array i a -> b # foldl :: (b -> a -> b) -> b -> Array i a -> b # foldl' :: (b -> a -> b) -> b -> Array i a -> b # foldr1 :: (a -> a -> a) -> Array i a -> a # foldl1 :: (a -> a -> a) -> Array i a -> a # toList :: Array i a -> [a] # null :: Array i a -> Bool # length :: Array i a -> Int # elem :: Eq a => a -> Array i a -> Bool # maximum :: Ord a => Array i a -> a # minimum :: Ord a => Array i a -> a # sum :: Num a => Array i a -> a # product :: Num a => Array i a -> a #
Foldable (Arg a)	Since: base-4.9.0.0
Instance details Defined in Data.Semigroup Methods fold :: Monoid m => Arg a m -> m # foldMap :: Monoid m => (a0 -> m) -> Arg a a0 -> m # foldMap' :: Monoid m => (a0 -> m) -> Arg a a0 -> m # foldr :: (a0 -> b -> b) -> b -> Arg a a0 -> b # foldr' :: (a0 -> b -> b) -> b -> Arg a a0 -> b # foldl :: (b -> a0 -> b) -> b -> Arg a a0 -> b # foldl' :: (b -> a0 -> b) -> b -> Arg a a0 -> b # foldr1 :: (a0 -> a0 -> a0) -> Arg a a0 -> a0 # foldl1 :: (a0 -> a0 -> a0) -> Arg a a0 -> a0 # toList :: Arg a a0 -> [a0] # null :: Arg a a0 -> Bool # length :: Arg a a0 -> Int # elem :: Eq a0 => a0 -> Arg a a0 -> Bool # maximum :: Ord a0 => Arg a a0 -> a0 # minimum :: Ord a0 => Arg a a0 -> a0 # sum :: Num a0 => Arg a a0 -> a0 # product :: Num a0 => Arg a a0 -> a0 #
Foldable (Proxy :: Type -> Type)	Since: base-4.7.0.0
Instance details Defined in Data.Foldable Methods fold :: Monoid m => Proxy m -> m # foldMap :: Monoid m => (a -> m) -> Proxy a -> m # foldMap' :: Monoid m => (a -> m) -> Proxy a -> m # foldr :: (a -> b -> b) -> b -> Proxy a -> b # foldr' :: (a -> b -> b) -> b -> Proxy a -> b # foldl :: (b -> a -> b) -> b -> Proxy a -> b # foldl' :: (b -> a -> b) -> b -> Proxy a -> b # foldr1 :: (a -> a -> a) -> Proxy a -> a # foldl1 :: (a -> a -> a) -> Proxy a -> a # toList :: Proxy a -> [a] # null :: Proxy a -> Bool # length :: Proxy a -> Int # elem :: Eq a => a -> Proxy a -> Bool # maximum :: Ord a => Proxy a -> a # minimum :: Ord a => Proxy a -> a # sum :: Num a => Proxy a -> a # product :: Num a => Proxy a -> a #
Foldable f => Foldable (MaybeT f)
Instance details Defined in Control.Monad.Trans.Maybe Methods fold :: Monoid m => MaybeT f m -> m # foldMap :: Monoid m => (a -> m) -> MaybeT f a -> m # foldMap' :: Monoid m => (a -> m) -> MaybeT f a -> m # foldr :: (a -> b -> b) -> b -> MaybeT f a -> b # foldr' :: (a -> b -> b) -> b -> MaybeT f a -> b # foldl :: (b -> a -> b) -> b -> MaybeT f a -> b # foldl' :: (b -> a -> b) -> b -> MaybeT f a -> b # foldr1 :: (a -> a -> a) -> MaybeT f a -> a # foldl1 :: (a -> a -> a) -> MaybeT f a -> a # toList :: MaybeT f a -> [a] # null :: MaybeT f a -> Bool # length :: MaybeT f a -> Int # elem :: Eq a => a -> MaybeT f a -> Bool # maximum :: Ord a => MaybeT f a -> a # minimum :: Ord a => MaybeT f a -> a # sum :: Num a => MaybeT f a -> a # product :: Num a => MaybeT f a -> a #
(Functor f, Foldable f) => Foldable (Free f)
Instance details Defined in Control.Monad.Free Methods fold :: Monoid m => Free f m -> m # foldMap :: Monoid m => (a -> m) -> Free f a -> m # foldMap' :: Monoid m => (a -> m) -> Free f a -> m # foldr :: (a -> b -> b) -> b -> Free f a -> b # foldr' :: (a -> b -> b) -> b -> Free f a -> b # foldl :: (b -> a -> b) -> b -> Free f a -> b # foldl' :: (b -> a -> b) -> b -> Free f a -> b # foldr1 :: (a -> a -> a) -> Free f a -> a # foldl1 :: (a -> a -> a) -> Free f a -> a # toList :: Free f a -> [a] # null :: Free f a -> Bool # length :: Free f a -> Int # elem :: Eq a => a -> Free f a -> Bool # maximum :: Ord a => Free f a -> a # minimum :: Ord a => Free f a -> a # sum :: Num a => Free f a -> a # product :: Num a => Free f a -> a #
Foldable f => Foldable (ListT f)
Instance details Defined in Control.Monad.Trans.List Methods fold :: Monoid m => ListT f m -> m # foldMap :: Monoid m => (a -> m) -> ListT f a -> m # foldMap' :: Monoid m => (a -> m) -> ListT f a -> m # foldr :: (a -> b -> b) -> b -> ListT f a -> b # foldr' :: (a -> b -> b) -> b -> ListT f a -> b # foldl :: (b -> a -> b) -> b -> ListT f a -> b # foldl' :: (b -> a -> b) -> b -> ListT f a -> b # foldr1 :: (a -> a -> a) -> ListT f a -> a # foldl1 :: (a -> a -> a) -> ListT f a -> a # toList :: ListT f a -> [a] # null :: ListT f a -> Bool # length :: ListT f a -> Int # elem :: Eq a => a -> ListT f a -> Bool # maximum :: Ord a => ListT f a -> a # minimum :: Ord a => ListT f a -> a # sum :: Num a => ListT f a -> a # product :: Num a => ListT f a -> a #
Foldable f => Foldable (WrappedPoly f)
Instance details Defined in Data.MonoTraversable Methods fold :: Monoid m => WrappedPoly f m -> m # foldMap :: Monoid m => (a -> m) -> WrappedPoly f a -> m # foldMap' :: Monoid m => (a -> m) -> WrappedPoly f a -> m # foldr :: (a -> b -> b) -> b -> WrappedPoly f a -> b # foldr' :: (a -> b -> b) -> b -> WrappedPoly f a -> b # foldl :: (b -> a -> b) -> b -> WrappedPoly f a -> b # foldl' :: (b -> a -> b) -> b -> WrappedPoly f a -> b # foldr1 :: (a -> a -> a) -> WrappedPoly f a -> a # foldl1 :: (a -> a -> a) -> WrappedPoly f a -> a # toList :: WrappedPoly f a -> [a] # null :: WrappedPoly f a -> Bool # length :: WrappedPoly f a -> Int # elem :: Eq a => a -> WrappedPoly f a -> Bool # maximum :: Ord a => WrappedPoly f a -> a # minimum :: Ord a => WrappedPoly f a -> a # sum :: Num a => WrappedPoly f a -> a # product :: Num a => WrappedPoly f a -> a #
MonoFoldable mono => Foldable (WrappedMono mono)
Instance details Defined in Data.MonoTraversable Methods fold :: Monoid m => WrappedMono mono m -> m # foldMap :: Monoid m => (a -> m) -> WrappedMono mono a -> m # foldMap' :: Monoid m => (a -> m) -> WrappedMono mono a -> m # foldr :: (a -> b -> b) -> b -> WrappedMono mono a -> b # foldr' :: (a -> b -> b) -> b -> WrappedMono mono a -> b # foldl :: (b -> a -> b) -> b -> WrappedMono mono a -> b # foldl' :: (b -> a -> b) -> b -> WrappedMono mono a -> b # foldr1 :: (a -> a -> a) -> WrappedMono mono a -> a # foldl1 :: (a -> a -> a) -> WrappedMono mono a -> a # toList :: WrappedMono mono a -> [a] # null :: WrappedMono mono a -> Bool # length :: WrappedMono mono a -> Int # elem :: Eq a => a -> WrappedMono mono a -> Bool # maximum :: Ord a => WrappedMono mono a -> a # minimum :: Ord a => WrappedMono mono a -> a # sum :: Num a => WrappedMono mono a -> a # product :: Num a => WrappedMono mono a -> a #
Foldable (Pair e)
Instance details Defined in Data.Strict.Tuple Methods fold :: Monoid m => Pair e m -> m # foldMap :: Monoid m => (a -> m) -> Pair e a -> m # foldMap' :: Monoid m => (a -> m) -> Pair e a -> m # foldr :: (a -> b -> b) -> b -> Pair e a -> b # foldr' :: (a -> b -> b) -> b -> Pair e a -> b # foldl :: (b -> a -> b) -> b -> Pair e a -> b # foldl' :: (b -> a -> b) -> b -> Pair e a -> b # foldr1 :: (a -> a -> a) -> Pair e a -> a # foldl1 :: (a -> a -> a) -> Pair e a -> a # toList :: Pair e a -> [a] # null :: Pair e a -> Bool # length :: Pair e a -> Int # elem :: Eq a => a -> Pair e a -> Bool # maximum :: Ord a => Pair e a -> a # minimum :: Ord a => Pair e a -> a # sum :: Num a => Pair e a -> a # product :: Num a => Pair e a -> a #
Foldable (These a)
Instance details Defined in Data.Strict.These Methods fold :: Monoid m => These a m -> m # foldMap :: Monoid m => (a0 -> m) -> These a a0 -> m # foldMap' :: Monoid m => (a0 -> m) -> These a a0 -> m # foldr :: (a0 -> b -> b) -> b -> These a a0 -> b # foldr' :: (a0 -> b -> b) -> b -> These a a0 -> b # foldl :: (b -> a0 -> b) -> b -> These a a0 -> b # foldl' :: (b -> a0 -> b) -> b -> These a a0 -> b # foldr1 :: (a0 -> a0 -> a0) -> These a a0 -> a0 # foldl1 :: (a0 -> a0 -> a0) -> These a a0 -> a0 # toList :: These a a0 -> [a0] # null :: These a a0 -> Bool # length :: These a a0 -> Int # elem :: Eq a0 => a0 -> These a a0 -> Bool # maximum :: Ord a0 => These a a0 -> a0 # minimum :: Ord a0 => These a a0 -> a0 # sum :: Num a0 => These a a0 -> a0 # product :: Num a0 => These a a0 -> a0 #
Foldable (Either e)
Instance details Defined in Data.Strict.Either Methods fold :: Monoid m => Either e m -> m # foldMap :: Monoid m => (a -> m) -> Either e a -> m # foldMap' :: Monoid m => (a -> m) -> Either e a -> m # foldr :: (a -> b -> b) -> b -> Either e a -> b # foldr' :: (a -> b -> b) -> b -> Either e a -> b # foldl :: (b -> a -> b) -> b -> Either e a -> b # foldl' :: (b -> a -> b) -> b -> Either e a -> b # foldr1 :: (a -> a -> a) -> Either e a -> a # foldl1 :: (a -> a -> a) -> Either e a -> a # toList :: Either e a -> [a] # null :: Either e a -> Bool # length :: Either e a -> Int # elem :: Eq a => a -> Either e a -> Bool # maximum :: Ord a => Either e a -> a # minimum :: Ord a => Either e a -> a # sum :: Num a => Either e a -> a # product :: Num a => Either e a -> a #
Foldable (These a)
Instance details Defined in Data.These Methods fold :: Monoid m => These a m -> m # foldMap :: Monoid m => (a0 -> m) -> These a a0 -> m # foldMap' :: Monoid m => (a0 -> m) -> These a a0 -> m # foldr :: (a0 -> b -> b) -> b -> These a a0 -> b # foldr' :: (a0 -> b -> b) -> b -> These a a0 -> b # foldl :: (b -> a0 -> b) -> b -> These a a0 -> b # foldl' :: (b -> a0 -> b) -> b -> These a a0 -> b # foldr1 :: (a0 -> a0 -> a0) -> These a a0 -> a0 # foldl1 :: (a0 -> a0 -> a0) -> These a a0 -> a0 # toList :: These a a0 -> [a0] # null :: These a a0 -> Bool # length :: These a a0 -> Int # elem :: Eq a0 => a0 -> These a a0 -> Bool # maximum :: Ord a0 => These a a0 -> a0 # minimum :: Ord a0 => These a a0 -> a0 # sum :: Num a0 => These a a0 -> a0 # product :: Num a0 => These a a0 -> a0 #
Foldable f => Foldable (Rec1 f)	Since: base-4.9.0.0
Instance details Defined in Data.Foldable Methods fold :: Monoid m => Rec1 f m -> m # foldMap :: Monoid m => (a -> m) -> Rec1 f a -> m # foldMap' :: Monoid m => (a -> m) -> Rec1 f a -> m # foldr :: (a -> b -> b) -> b -> Rec1 f a -> b # foldr' :: (a -> b -> b) -> b -> Rec1 f a -> b # foldl :: (b -> a -> b) -> b -> Rec1 f a -> b # foldl' :: (b -> a -> b) -> b -> Rec1 f a -> b # foldr1 :: (a -> a -> a) -> Rec1 f a -> a # foldl1 :: (a -> a -> a) -> Rec1 f a -> a # toList :: Rec1 f a -> [a] # null :: Rec1 f a -> Bool # length :: Rec1 f a -> Int # elem :: Eq a => a -> Rec1 f a -> Bool # maximum :: Ord a => Rec1 f a -> a # minimum :: Ord a => Rec1 f a -> a # sum :: Num a => Rec1 f a -> a # product :: Num a => Rec1 f a -> a #
Foldable (Const m :: Type -> Type)	Since: base-4.7.0.0
Instance details Defined in Data.Functor.Const Methods fold :: Monoid m0 => Const m m0 -> m0 # foldMap :: Monoid m0 => (a -> m0) -> Const m a -> m0 # foldMap' :: Monoid m0 => (a -> m0) -> Const m a -> m0 # foldr :: (a -> b -> b) -> b -> Const m a -> b # foldr' :: (a -> b -> b) -> b -> Const m a -> b # foldl :: (b -> a -> b) -> b -> Const m a -> b # foldl' :: (b -> a -> b) -> b -> Const m a -> b # foldr1 :: (a -> a -> a) -> Const m a -> a # foldl1 :: (a -> a -> a) -> Const m a -> a # toList :: Const m a -> [a] # null :: Const m a -> Bool # length :: Const m a -> Int # elem :: Eq a => a -> Const m a -> Bool # maximum :: Ord a => Const m a -> a # minimum :: Ord a => Const m a -> a # sum :: Num a => Const m a -> a # product :: Num a => Const m a -> a #
Foldable f => Foldable (Ap f)	Since: base-4.12.0.0
Instance details Defined in Data.Foldable Methods fold :: Monoid m => Ap f m -> m # foldMap :: Monoid m => (a -> m) -> Ap f a -> m # foldMap' :: Monoid m => (a -> m) -> Ap f a -> m # foldr :: (a -> b -> b) -> b -> Ap f a -> b # foldr' :: (a -> b -> b) -> b -> Ap f a -> b # foldl :: (b -> a -> b) -> b -> Ap f a -> b # foldl' :: (b -> a -> b) -> b -> Ap f a -> b # foldr1 :: (a -> a -> a) -> Ap f a -> a # foldl1 :: (a -> a -> a) -> Ap f a -> a # toList :: Ap f a -> [a] # null :: Ap f a -> Bool # length :: Ap f a -> Int # elem :: Eq a => a -> Ap f a -> Bool # maximum :: Ord a => Ap f a -> a # minimum :: Ord a => Ap f a -> a # sum :: Num a => Ap f a -> a # product :: Num a => Ap f a -> a #
Foldable f => Foldable (Alt f)	Since: base-4.12.0.0
Instance details Defined in Data.Foldable Methods fold :: Monoid m => Alt f m -> m # foldMap :: Monoid m => (a -> m) -> Alt f a -> m # foldMap' :: Monoid m => (a -> m) -> Alt f a -> m # foldr :: (a -> b -> b) -> b -> Alt f a -> b # foldr' :: (a -> b -> b) -> b -> Alt f a -> b # foldl :: (b -> a -> b) -> b -> Alt f a -> b # foldl' :: (b -> a -> b) -> b -> Alt f a -> b # foldr1 :: (a -> a -> a) -> Alt f a -> a # foldl1 :: (a -> a -> a) -> Alt f a -> a # toList :: Alt f a -> [a] # null :: Alt f a -> Bool # length :: Alt f a -> Int # elem :: Eq a => a -> Alt f a -> Bool # maximum :: Ord a => Alt f a -> a # minimum :: Ord a => Alt f a -> a # sum :: Num a => Alt f a -> a # product :: Num a => Alt f a -> a #
Foldable f => Foldable (IdentityT f)
Instance details Defined in Control.Monad.Trans.Identity Methods fold :: Monoid m => IdentityT f m -> m # foldMap :: Monoid m => (a -> m) -> IdentityT f a -> m # foldMap' :: Monoid m => (a -> m) -> IdentityT f a -> m # foldr :: (a -> b -> b) -> b -> IdentityT f a -> b # foldr' :: (a -> b -> b) -> b -> IdentityT f a -> b # foldl :: (b -> a -> b) -> b -> IdentityT f a -> b # foldl' :: (b -> a -> b) -> b -> IdentityT f a -> b # foldr1 :: (a -> a -> a) -> IdentityT f a -> a # foldl1 :: (a -> a -> a) -> IdentityT f a -> a # toList :: IdentityT f a -> [a] # null :: IdentityT f a -> Bool # length :: IdentityT f a -> Int # elem :: Eq a => a -> IdentityT f a -> Bool # maximum :: Ord a => IdentityT f a -> a # minimum :: Ord a => IdentityT f a -> a # sum :: Num a => IdentityT f a -> a # product :: Num a => IdentityT f a -> a #
Foldable f => Foldable (WriterT w f)
Instance details Defined in Control.Monad.Trans.Writer.Strict Methods fold :: Monoid m => WriterT w f m -> m # foldMap :: Monoid m => (a -> m) -> WriterT w f a -> m # foldMap' :: Monoid m => (a -> m) -> WriterT w f a -> m # foldr :: (a -> b -> b) -> b -> WriterT w f a -> b # foldr' :: (a -> b -> b) -> b -> WriterT w f a -> b # foldl :: (b -> a -> b) -> b -> WriterT w f a -> b # foldl' :: (b -> a -> b) -> b -> WriterT w f a -> b # foldr1 :: (a -> a -> a) -> WriterT w f a -> a # foldl1 :: (a -> a -> a) -> WriterT w f a -> a # toList :: WriterT w f a -> [a] # null :: WriterT w f a -> Bool # length :: WriterT w f a -> Int # elem :: Eq a => a -> WriterT w f a -> Bool # maximum :: Ord a => WriterT w f a -> a # minimum :: Ord a => WriterT w f a -> a # sum :: Num a => WriterT w f a -> a # product :: Num a => WriterT w f a -> a #
Foldable f => Foldable (WriterT w f)
Instance details Defined in Control.Monad.Trans.Writer.Lazy Methods fold :: Monoid m => WriterT w f m -> m # foldMap :: Monoid m => (a -> m) -> WriterT w f a -> m # foldMap' :: Monoid m => (a -> m) -> WriterT w f a -> m # foldr :: (a -> b -> b) -> b -> WriterT w f a -> b # foldr' :: (a -> b -> b) -> b -> WriterT w f a -> b # foldl :: (b -> a -> b) -> b -> WriterT w f a -> b # foldl' :: (b -> a -> b) -> b -> WriterT w f a -> b # foldr1 :: (a -> a -> a) -> WriterT w f a -> a # foldl1 :: (a -> a -> a) -> WriterT w f a -> a # toList :: WriterT w f a -> [a] # null :: WriterT w f a -> Bool # length :: WriterT w f a -> Int # elem :: Eq a => a -> WriterT w f a -> Bool # maximum :: Ord a => WriterT w f a -> a # minimum :: Ord a => WriterT w f a -> a # sum :: Num a => WriterT w f a -> a # product :: Num a => WriterT w f a -> a #
Foldable f => Foldable (ExceptT e f)
Instance details Defined in Control.Monad.Trans.Except Methods fold :: Monoid m => ExceptT e f m -> m # foldMap :: Monoid m => (a -> m) -> ExceptT e f a -> m # foldMap' :: Monoid m => (a -> m) -> ExceptT e f a -> m # foldr :: (a -> b -> b) -> b -> ExceptT e f a -> b # foldr' :: (a -> b -> b) -> b -> ExceptT e f a -> b # foldl :: (b -> a -> b) -> b -> ExceptT e f a -> b # foldl' :: (b -> a -> b) -> b -> ExceptT e f a -> b # foldr1 :: (a -> a -> a) -> ExceptT e f a -> a # foldl1 :: (a -> a -> a) -> ExceptT e f a -> a # toList :: ExceptT e f a -> [a] # null :: ExceptT e f a -> Bool # length :: ExceptT e f a -> Int # elem :: Eq a => a -> ExceptT e f a -> Bool # maximum :: Ord a => ExceptT e f a -> a # minimum :: Ord a => ExceptT e f a -> a # sum :: Num a => ExceptT e f a -> a # product :: Num a => ExceptT e f a -> a #
(Traversable m, Traversable f) => Foldable (FreeT f m)
Instance details Defined in Control.Monad.Free Methods fold :: Monoid m0 => FreeT f m m0 -> m0 # foldMap :: Monoid m0 => (a -> m0) -> FreeT f m a -> m0 # foldMap' :: Monoid m0 => (a -> m0) -> FreeT f m a -> m0 # foldr :: (a -> b -> b) -> b -> FreeT f m a -> b # foldr' :: (a -> b -> b) -> b -> FreeT f m a -> b # foldl :: (b -> a -> b) -> b -> FreeT f m a -> b # foldl' :: (b -> a -> b) -> b -> FreeT f m a -> b # foldr1 :: (a -> a -> a) -> FreeT f m a -> a # foldl1 :: (a -> a -> a) -> FreeT f m a -> a # toList :: FreeT f m a -> [a] # null :: FreeT f m a -> Bool # length :: FreeT f m a -> Int # elem :: Eq a => a -> FreeT f m a -> Bool # maximum :: Ord a => FreeT f m a -> a # minimum :: Ord a => FreeT f m a -> a # sum :: Num a => FreeT f m a -> a # product :: Num a => FreeT f m a -> a #
Foldable f => Foldable (ErrorT e f)
Instance details Defined in Control.Monad.Trans.Error Methods fold :: Monoid m => ErrorT e f m -> m # foldMap :: Monoid m => (a -> m) -> ErrorT e f a -> m # foldMap' :: Monoid m => (a -> m) -> ErrorT e f a -> m # foldr :: (a -> b -> b) -> b -> ErrorT e f a -> b # foldr' :: (a -> b -> b) -> b -> ErrorT e f a -> b # foldl :: (b -> a -> b) -> b -> ErrorT e f a -> b # foldl' :: (b -> a -> b) -> b -> ErrorT e f a -> b # foldr1 :: (a -> a -> a) -> ErrorT e f a -> a # foldl1 :: (a -> a -> a) -> ErrorT e f a -> a # toList :: ErrorT e f a -> [a] # null :: ErrorT e f a -> Bool # length :: ErrorT e f a -> Int # elem :: Eq a => a -> ErrorT e f a -> Bool # maximum :: Ord a => ErrorT e f a -> a # minimum :: Ord a => ErrorT e f a -> a # sum :: Num a => ErrorT e f a -> a # product :: Num a => ErrorT e f a -> a #
Foldable (Tagged s)
Instance details Defined in Data.Tagged Methods fold :: Monoid m => Tagged s m -> m # foldMap :: Monoid m => (a -> m) -> Tagged s a -> m # foldMap' :: Monoid m => (a -> m) -> Tagged s a -> m # foldr :: (a -> b -> b) -> b -> Tagged s a -> b # foldr' :: (a -> b -> b) -> b -> Tagged s a -> b # foldl :: (b -> a -> b) -> b -> Tagged s a -> b # foldl' :: (b -> a -> b) -> b -> Tagged s a -> b # foldr1 :: (a -> a -> a) -> Tagged s a -> a # foldl1 :: (a -> a -> a) -> Tagged s a -> a # toList :: Tagged s a -> [a] # null :: Tagged s a -> Bool # length :: Tagged s a -> Int # elem :: Eq a => a -> Tagged s a -> Bool # maximum :: Ord a => Tagged s a -> a # minimum :: Ord a => Tagged s a -> a # sum :: Num a => Tagged s a -> a # product :: Num a => Tagged s a -> a #
(Foldable f, Foldable g) => Foldable (These1 f g)
Instance details Defined in Data.Functor.These Methods fold :: Monoid m => These1 f g m -> m # foldMap :: Monoid m => (a -> m) -> These1 f g a -> m # foldMap' :: Monoid m => (a -> m) -> These1 f g a -> m # foldr :: (a -> b -> b) -> b -> These1 f g a -> b # foldr' :: (a -> b -> b) -> b -> These1 f g a -> b # foldl :: (b -> a -> b) -> b -> These1 f g a -> b # foldl' :: (b -> a -> b) -> b -> These1 f g a -> b # foldr1 :: (a -> a -> a) -> These1 f g a -> a # foldl1 :: (a -> a -> a) -> These1 f g a -> a # toList :: These1 f g a -> [a] # null :: These1 f g a -> Bool # length :: These1 f g a -> Int # elem :: Eq a => a -> These1 f g a -> Bool # maximum :: Ord a => These1 f g a -> a # minimum :: Ord a => These1 f g a -> a # sum :: Num a => These1 f g a -> a # product :: Num a => These1 f g a -> a #
Foldable (K1 i c :: Type -> Type)	Since: base-4.9.0.0
Instance details Defined in Data.Foldable Methods fold :: Monoid m => K1 i c m -> m # foldMap :: Monoid m => (a -> m) -> K1 i c a -> m # foldMap' :: Monoid m => (a -> m) -> K1 i c a -> m # foldr :: (a -> b -> b) -> b -> K1 i c a -> b # foldr' :: (a -> b -> b) -> b -> K1 i c a -> b # foldl :: (b -> a -> b) -> b -> K1 i c a -> b # foldl' :: (b -> a -> b) -> b -> K1 i c a -> b # foldr1 :: (a -> a -> a) -> K1 i c a -> a # foldl1 :: (a -> a -> a) -> K1 i c a -> a # toList :: K1 i c a -> [a] # null :: K1 i c a -> Bool # length :: K1 i c a -> Int # elem :: Eq a => a -> K1 i c a -> Bool # maximum :: Ord a => K1 i c a -> a # minimum :: Ord a => K1 i c a -> a # sum :: Num a => K1 i c a -> a # product :: Num a => K1 i c a -> a #
(Foldable f, Foldable g) => Foldable (f :+: g)	Since: base-4.9.0.0
Instance details Defined in Data.Foldable Methods fold :: Monoid m => (f :+: g) m -> m # foldMap :: Monoid m => (a -> m) -> (f :+: g) a -> m # foldMap' :: Monoid m => (a -> m) -> (f :+: g) a -> m # foldr :: (a -> b -> b) -> b -> (f :+: g) a -> b # foldr' :: (a -> b -> b) -> b -> (f :+: g) a -> b # foldl :: (b -> a -> b) -> b -> (f :+: g) a -> b # foldl' :: (b -> a -> b) -> b -> (f :+: g) a -> b # foldr1 :: (a -> a -> a) -> (f :+: g) a -> a # foldl1 :: (a -> a -> a) -> (f :+: g) a -> a # toList :: (f :+: g) a -> [a] # null :: (f :+: g) a -> Bool # length :: (f :+: g) a -> Int # elem :: Eq a => a -> (f :+: g) a -> Bool # maximum :: Ord a => (f :+: g) a -> a # minimum :: Ord a => (f :+: g) a -> a # sum :: Num a => (f :+: g) a -> a # product :: Num a => (f :+: g) a -> a #
(Foldable f, Foldable g) => Foldable (f :*: g)	Since: base-4.9.0.0
Instance details Defined in Data.Foldable Methods fold :: Monoid m => (f :: g) m -> m # foldMap :: Monoid m => (a -> m) -> (f :: g) a -> m # foldMap' :: Monoid m => (a -> m) -> (f :: g) a -> m # foldr :: (a -> b -> b) -> b -> (f :: g) a -> b # foldr' :: (a -> b -> b) -> b -> (f :: g) a -> b # foldl :: (b -> a -> b) -> b -> (f :: g) a -> b # foldl' :: (b -> a -> b) -> b -> (f :: g) a -> b # foldr1 :: (a -> a -> a) -> (f :: g) a -> a # foldl1 :: (a -> a -> a) -> (f :: g) a -> a # toList :: (f :: g) a -> [a] # null :: (f :: g) a -> Bool # length :: (f :: g) a -> Int # elem :: Eq a => a -> (f :: g) a -> Bool # maximum :: Ord a => (f :: g) a -> a # minimum :: Ord a => (f :: g) a -> a # sum :: Num a => (f :: g) a -> a # product :: Num a => (f :*: g) a -> a #
(Foldable f, Foldable g) => Foldable (Product f g)	Since: base-4.9.0.0
Instance details Defined in Data.Functor.Product Methods fold :: Monoid m => Product f g m -> m # foldMap :: Monoid m => (a -> m) -> Product f g a -> m # foldMap' :: Monoid m => (a -> m) -> Product f g a -> m # foldr :: (a -> b -> b) -> b -> Product f g a -> b # foldr' :: (a -> b -> b) -> b -> Product f g a -> b # foldl :: (b -> a -> b) -> b -> Product f g a -> b # foldl' :: (b -> a -> b) -> b -> Product f g a -> b # foldr1 :: (a -> a -> a) -> Product f g a -> a # foldl1 :: (a -> a -> a) -> Product f g a -> a # toList :: Product f g a -> [a] # null :: Product f g a -> Bool # length :: Product f g a -> Int # elem :: Eq a => a -> Product f g a -> Bool # maximum :: Ord a => Product f g a -> a # minimum :: Ord a => Product f g a -> a # sum :: Num a => Product f g a -> a # product :: Num a => Product f g a -> a #
(Foldable f, Foldable g) => Foldable (Sum f g)	Since: base-4.9.0.0
Instance details Defined in Data.Functor.Sum Methods fold :: Monoid m => Sum f g m -> m # foldMap :: Monoid m => (a -> m) -> Sum f g a -> m # foldMap' :: Monoid m => (a -> m) -> Sum f g a -> m # foldr :: (a -> b -> b) -> b -> Sum f g a -> b # foldr' :: (a -> b -> b) -> b -> Sum f g a -> b # foldl :: (b -> a -> b) -> b -> Sum f g a -> b # foldl' :: (b -> a -> b) -> b -> Sum f g a -> b # foldr1 :: (a -> a -> a) -> Sum f g a -> a # foldl1 :: (a -> a -> a) -> Sum f g a -> a # toList :: Sum f g a -> [a] # null :: Sum f g a -> Bool # length :: Sum f g a -> Int # elem :: Eq a => a -> Sum f g a -> Bool # maximum :: Ord a => Sum f g a -> a # minimum :: Ord a => Sum f g a -> a # sum :: Num a => Sum f g a -> a # product :: Num a => Sum f g a -> a #
Foldable f => Foldable (M1 i c f)	Since: base-4.9.0.0
Instance details Defined in Data.Foldable Methods fold :: Monoid m => M1 i c f m -> m # foldMap :: Monoid m => (a -> m) -> M1 i c f a -> m # foldMap' :: Monoid m => (a -> m) -> M1 i c f a -> m # foldr :: (a -> b -> b) -> b -> M1 i c f a -> b # foldr' :: (a -> b -> b) -> b -> M1 i c f a -> b # foldl :: (b -> a -> b) -> b -> M1 i c f a -> b # foldl' :: (b -> a -> b) -> b -> M1 i c f a -> b # foldr1 :: (a -> a -> a) -> M1 i c f a -> a # foldl1 :: (a -> a -> a) -> M1 i c f a -> a # toList :: M1 i c f a -> [a] # null :: M1 i c f a -> Bool # length :: M1 i c f a -> Int # elem :: Eq a => a -> M1 i c f a -> Bool # maximum :: Ord a => M1 i c f a -> a # minimum :: Ord a => M1 i c f a -> a # sum :: Num a => M1 i c f a -> a # product :: Num a => M1 i c f a -> a #
(Foldable f, Foldable g) => Foldable (f :.: g)	Since: base-4.9.0.0
Instance details Defined in Data.Foldable Methods fold :: Monoid m => (f :.: g) m -> m # foldMap :: Monoid m => (a -> m) -> (f :.: g) a -> m # foldMap' :: Monoid m => (a -> m) -> (f :.: g) a -> m # foldr :: (a -> b -> b) -> b -> (f :.: g) a -> b # foldr' :: (a -> b -> b) -> b -> (f :.: g) a -> b # foldl :: (b -> a -> b) -> b -> (f :.: g) a -> b # foldl' :: (b -> a -> b) -> b -> (f :.: g) a -> b # foldr1 :: (a -> a -> a) -> (f :.: g) a -> a # foldl1 :: (a -> a -> a) -> (f :.: g) a -> a # toList :: (f :.: g) a -> [a] # null :: (f :.: g) a -> Bool # length :: (f :.: g) a -> Int # elem :: Eq a => a -> (f :.: g) a -> Bool # maximum :: Ord a => (f :.: g) a -> a # minimum :: Ord a => (f :.: g) a -> a # sum :: Num a => (f :.: g) a -> a # product :: Num a => (f :.: g) a -> a #
(Foldable f, Foldable g) => Foldable (Compose f g)	Since: base-4.9.0.0
Instance details Defined in Data.Functor.Compose Methods fold :: Monoid m => Compose f g m -> m # foldMap :: Monoid m => (a -> m) -> Compose f g a -> m # foldMap' :: Monoid m => (a -> m) -> Compose f g a -> m # foldr :: (a -> b -> b) -> b -> Compose f g a -> b # foldr' :: (a -> b -> b) -> b -> Compose f g a -> b # foldl :: (b -> a -> b) -> b -> Compose f g a -> b # foldl' :: (b -> a -> b) -> b -> Compose f g a -> b # foldr1 :: (a -> a -> a) -> Compose f g a -> a # foldl1 :: (a -> a -> a) -> Compose f g a -> a # toList :: Compose f g a -> [a] # null :: Compose f g a -> Bool # length :: Compose f g a -> Int # elem :: Eq a => a -> Compose f g a -> Bool # maximum :: Ord a => Compose f g a -> a # minimum :: Ord a => Compose f g a -> a # sum :: Num a => Compose f g a -> a # product :: Num a => Compose f g a -> a #
Bifoldable p => Foldable (Flip p a)
Instance details Defined in Data.Bifunctor.Flip Methods fold :: Monoid m => Flip p a m -> m # foldMap :: Monoid m => (a0 -> m) -> Flip p a a0 -> m # foldMap' :: Monoid m => (a0 -> m) -> Flip p a a0 -> m # foldr :: (a0 -> b -> b) -> b -> Flip p a a0 -> b # foldr' :: (a0 -> b -> b) -> b -> Flip p a a0 -> b # foldl :: (b -> a0 -> b) -> b -> Flip p a a0 -> b # foldl' :: (b -> a0 -> b) -> b -> Flip p a a0 -> b # foldr1 :: (a0 -> a0 -> a0) -> Flip p a a0 -> a0 # foldl1 :: (a0 -> a0 -> a0) -> Flip p a a0 -> a0 # toList :: Flip p a a0 -> [a0] # null :: Flip p a a0 -> Bool # length :: Flip p a a0 -> Int # elem :: Eq a0 => a0 -> Flip p a a0 -> Bool # maximum :: Ord a0 => Flip p a a0 -> a0 # minimum :: Ord a0 => Flip p a a0 -> a0 # sum :: Num a0 => Flip p a a0 -> a0 # product :: Num a0 => Flip p a a0 -> a0 #
(Foldable f, Bifoldable p) => Foldable (Tannen f p a)
Instance details Defined in Data.Bifunctor.Tannen Methods fold :: Monoid m => Tannen f p a m -> m # foldMap :: Monoid m => (a0 -> m) -> Tannen f p a a0 -> m # foldMap' :: Monoid m => (a0 -> m) -> Tannen f p a a0 -> m # foldr :: (a0 -> b -> b) -> b -> Tannen f p a a0 -> b # foldr' :: (a0 -> b -> b) -> b -> Tannen f p a a0 -> b # foldl :: (b -> a0 -> b) -> b -> Tannen f p a a0 -> b # foldl' :: (b -> a0 -> b) -> b -> Tannen f p a a0 -> b # foldr1 :: (a0 -> a0 -> a0) -> Tannen f p a a0 -> a0 # foldl1 :: (a0 -> a0 -> a0) -> Tannen f p a a0 -> a0 # toList :: Tannen f p a a0 -> [a0] # null :: Tannen f p a a0 -> Bool # length :: Tannen f p a a0 -> Int # elem :: Eq a0 => a0 -> Tannen f p a a0 -> Bool # maximum :: Ord a0 => Tannen f p a a0 -> a0 # minimum :: Ord a0 => Tannen f p a a0 -> a0 # sum :: Num a0 => Tannen f p a a0 -> a0 # product :: Num a0 => Tannen f p a a0 -> a0 #
(Bifoldable p, Foldable g) => Foldable (Biff p f g a)
Instance details Defined in Data.Bifunctor.Biff Methods fold :: Monoid m => Biff p f g a m -> m # foldMap :: Monoid m => (a0 -> m) -> Biff p f g a a0 -> m # foldMap' :: Monoid m => (a0 -> m) -> Biff p f g a a0 -> m # foldr :: (a0 -> b -> b) -> b -> Biff p f g a a0 -> b # foldr' :: (a0 -> b -> b) -> b -> Biff p f g a a0 -> b # foldl :: (b -> a0 -> b) -> b -> Biff p f g a a0 -> b # foldl' :: (b -> a0 -> b) -> b -> Biff p f g a a0 -> b # foldr1 :: (a0 -> a0 -> a0) -> Biff p f g a a0 -> a0 # foldl1 :: (a0 -> a0 -> a0) -> Biff p f g a a0 -> a0 # toList :: Biff p f g a a0 -> [a0] # null :: Biff p f g a a0 -> Bool # length :: Biff p f g a a0 -> Int # elem :: Eq a0 => a0 -> Biff p f g a a0 -> Bool # maximum :: Ord a0 => Biff p f g a a0 -> a0 # minimum :: Ord a0 => Biff p f g a a0 -> a0 # sum :: Num a0 => Biff p f g a a0 -> a0 # product :: Num a0 => Biff p f g a a0 -> a0 #

class (Functor t, Foldable t) => Traversable (t :: Type -> Type) where #

Functors representing data structures that can be traversed from left to right.

A definition of traverse must satisfy the following laws:

Naturality: t . traverse f = traverse (t . f) for every applicative transformation t
Identity: traverse Identity = Identity
Composition: traverse (Compose . fmap g . f) = Compose . fmap (traverse g) . traverse f

A definition of sequenceA must satisfy the following laws:

Naturality: t . sequenceA = sequenceA . fmap t for every applicative transformation t
Identity: sequenceA . fmap Identity = Identity
Composition: sequenceA . fmap Compose = Compose . fmap sequenceA . sequenceA

where an applicative transformation is a function

t :: (Applicative f, Applicative g) => f a -> g a

preserving the Applicative operations, i.e.

t (pure x) = pure x
t (f <*> x) = t f <*> t x

and the identity functor Identity and composition functors Compose are from Data.Functor.Identity and Data.Functor.Compose.

A result of the naturality law is a purity law for traverse

traverse pure = pure

(The naturality law is implied by parametricity and thus so is the purity law [1, p15].)

Instances are similar to Functor, e.g. given a data type

data Tree a = Empty | Leaf a | Node (Tree a) a (Tree a)

a suitable instance would be

instance Traversable Tree where
   traverse f Empty = pure Empty
   traverse f (Leaf x) = Leaf <$> f x
   traverse f (Node l k r) = Node <$> traverse f l <*> f k <*> traverse f r

This is suitable even for abstract types, as the laws for <*> imply a form of associativity.

The superclass instances should satisfy the following:

In the Functor instance, fmap should be equivalent to traversal with the identity applicative functor (fmapDefault).
In the Foldable instance, foldMap should be equivalent to traversal with a constant applicative functor (foldMapDefault).

References: [1] The Essence of the Iterator Pattern, Jeremy Gibbons and Bruno C. d. S. Oliveira

Minimal complete definition

traverse | sequenceA

Methods

traverse :: Applicative f => (a -> f b) -> t a -> f (t b) #

Map each element of a structure to an action, evaluate these actions from left to right, and collect the results. For a version that ignores the results see traverse_.

sequenceA :: Applicative f => t (f a) -> f (t a) #

Evaluate each action in the structure from left to right, and collect the results. For a version that ignores the results see sequenceA_.

mapM :: Monad m => (a -> m b) -> t a -> m (t b) #

Map each element of a structure to a monadic action, evaluate these actions from left to right, and collect the results. For a version that ignores the results see mapM_.

sequence :: Monad m => t (m a) -> m (t a) #

Evaluate each monadic action in the structure from left to right, and collect the results. For a version that ignores the results see sequence_.

Instances

Instances details

Traversable []	Since: base-2.1
Instance details Defined in Data.Traversable Methods traverse :: Applicative f => (a -> f b) -> [a] -> f [b] # sequenceA :: Applicative f => [f a] -> f [a] # mapM :: Monad m => (a -> m b) -> [a] -> m [b] # sequence :: Monad m => [m a] -> m [a] #
Traversable Maybe	Since: base-2.1
Instance details Defined in Data.Traversable Methods traverse :: Applicative f => (a -> f b) -> Maybe a -> f (Maybe b) # sequenceA :: Applicative f => Maybe (f a) -> f (Maybe a) # mapM :: Monad m => (a -> m b) -> Maybe a -> m (Maybe b) # sequence :: Monad m => Maybe (m a) -> m (Maybe a) #
Traversable Par1	Since: base-4.9.0.0
Instance details Defined in Data.Traversable Methods traverse :: Applicative f => (a -> f b) -> Par1 a -> f (Par1 b) # sequenceA :: Applicative f => Par1 (f a) -> f (Par1 a) # mapM :: Monad m => (a -> m b) -> Par1 a -> m (Par1 b) # sequence :: Monad m => Par1 (m a) -> m (Par1 a) #
Traversable IResult
Instance details Defined in Data.Aeson.Types.Internal Methods traverse :: Applicative f => (a -> f b) -> IResult a -> f (IResult b) # sequenceA :: Applicative f => IResult (f a) -> f (IResult a) # mapM :: Monad m => (a -> m b) -> IResult a -> m (IResult b) # sequence :: Monad m => IResult (m a) -> m (IResult a) #
Traversable Result
Instance details Defined in Data.Aeson.Types.Internal Methods traverse :: Applicative f => (a -> f b) -> Result a -> f (Result b) # sequenceA :: Applicative f => Result (f a) -> f (Result a) # mapM :: Monad m => (a -> m b) -> Result a -> m (Result b) # sequence :: Monad m => Result (m a) -> m (Result a) #
Traversable Complex	Since: base-4.9.0.0
Instance details Defined in Data.Complex Methods traverse :: Applicative f => (a -> f b) -> Complex a -> f (Complex b) # sequenceA :: Applicative f => Complex (f a) -> f (Complex a) # mapM :: Monad m => (a -> m b) -> Complex a -> m (Complex b) # sequence :: Monad m => Complex (m a) -> m (Complex a) #
Traversable Min	Since: base-4.9.0.0
Instance details Defined in Data.Semigroup Methods traverse :: Applicative f => (a -> f b) -> Min a -> f (Min b) # sequenceA :: Applicative f => Min (f a) -> f (Min a) # mapM :: Monad m => (a -> m b) -> Min a -> m (Min b) # sequence :: Monad m => Min (m a) -> m (Min a) #
Traversable Max	Since: base-4.9.0.0
Instance details Defined in Data.Semigroup Methods traverse :: Applicative f => (a -> f b) -> Max a -> f (Max b) # sequenceA :: Applicative f => Max (f a) -> f (Max a) # mapM :: Monad m => (a -> m b) -> Max a -> m (Max b) # sequence :: Monad m => Max (m a) -> m (Max a) #
Traversable First	Since: base-4.9.0.0
Instance details Defined in Data.Semigroup Methods traverse :: Applicative f => (a -> f b) -> First a -> f (First b) # sequenceA :: Applicative f => First (f a) -> f (First a) # mapM :: Monad m => (a -> m b) -> First a -> m (First b) # sequence :: Monad m => First (m a) -> m (First a) #
Traversable Last	Since: base-4.9.0.0
Instance details Defined in Data.Semigroup Methods traverse :: Applicative f => (a -> f b) -> Last a -> f (Last b) # sequenceA :: Applicative f => Last (f a) -> f (Last a) # mapM :: Monad m => (a -> m b) -> Last a -> m (Last b) # sequence :: Monad m => Last (m a) -> m (Last a) #
Traversable Option	Since: base-4.9.0.0
Instance details Defined in Data.Semigroup Methods traverse :: Applicative f => (a -> f b) -> Option a -> f (Option b) # sequenceA :: Applicative f => Option (f a) -> f (Option a) # mapM :: Monad m => (a -> m b) -> Option a -> m (Option b) # sequence :: Monad m => Option (m a) -> m (Option a) #
Traversable ZipList	Since: base-4.9.0.0
Instance details Defined in Data.Traversable Methods traverse :: Applicative f => (a -> f b) -> ZipList a -> f (ZipList b) # sequenceA :: Applicative f => ZipList (f a) -> f (ZipList a) # mapM :: Monad m => (a -> m b) -> ZipList a -> m (ZipList b) # sequence :: Monad m => ZipList (m a) -> m (ZipList a) #
Traversable Identity	Since: base-4.9.0.0
Instance details Defined in Data.Traversable Methods traverse :: Applicative f => (a -> f b) -> Identity a -> f (Identity b) # sequenceA :: Applicative f => Identity (f a) -> f (Identity a) # mapM :: Monad m => (a -> m b) -> Identity a -> m (Identity b) # sequence :: Monad m => Identity (m a) -> m (Identity a) #
Traversable First	Since: base-4.8.0.0
Instance details Defined in Data.Traversable Methods traverse :: Applicative f => (a -> f b) -> First a -> f (First b) # sequenceA :: Applicative f => First (f a) -> f (First a) # mapM :: Monad m => (a -> m b) -> First a -> m (First b) # sequence :: Monad m => First (m a) -> m (First a) #
Traversable Last	Since: base-4.8.0.0
Instance details Defined in Data.Traversable Methods traverse :: Applicative f => (a -> f b) -> Last a -> f (Last b) # sequenceA :: Applicative f => Last (f a) -> f (Last a) # mapM :: Monad m => (a -> m b) -> Last a -> m (Last b) # sequence :: Monad m => Last (m a) -> m (Last a) #
Traversable Dual	Since: base-4.8.0.0
Instance details Defined in Data.Traversable Methods traverse :: Applicative f => (a -> f b) -> Dual a -> f (Dual b) # sequenceA :: Applicative f => Dual (f a) -> f (Dual a) # mapM :: Monad m => (a -> m b) -> Dual a -> m (Dual b) # sequence :: Monad m => Dual (m a) -> m (Dual a) #
Traversable Sum	Since: base-4.8.0.0
Instance details Defined in Data.Traversable Methods traverse :: Applicative f => (a -> f b) -> Sum a -> f (Sum b) # sequenceA :: Applicative f => Sum (f a) -> f (Sum a) # mapM :: Monad m => (a -> m b) -> Sum a -> m (Sum b) # sequence :: Monad m => Sum (m a) -> m (Sum a) #
Traversable Product	Since: base-4.8.0.0
Instance details Defined in Data.Traversable Methods traverse :: Applicative f => (a -> f b) -> Product a -> f (Product b) # sequenceA :: Applicative f => Product (f a) -> f (Product a) # mapM :: Monad m => (a -> m b) -> Product a -> m (Product b) # sequence :: Monad m => Product (m a) -> m (Product a) #
Traversable Down	Since: base-4.12.0.0
Instance details Defined in Data.Traversable Methods traverse :: Applicative f => (a -> f b) -> Down a -> f (Down b) # sequenceA :: Applicative f => Down (f a) -> f (Down a) # mapM :: Monad m => (a -> m b) -> Down a -> m (Down b) # sequence :: Monad m => Down (m a) -> m (Down a) #
Traversable NonEmpty	Since: base-4.9.0.0
Instance details Defined in Data.Traversable Methods traverse :: Applicative f => (a -> f b) -> NonEmpty a -> f (NonEmpty b) # sequenceA :: Applicative f => NonEmpty (f a) -> f (NonEmpty a) # mapM :: Monad m => (a -> m b) -> NonEmpty a -> m (NonEmpty b) # sequence :: Monad m => NonEmpty (m a) -> m (NonEmpty a) #
Traversable IntMap	Traverses in order of increasing key.
Instance details Defined in Data.IntMap.Internal Methods traverse :: Applicative f => (a -> f b) -> IntMap a -> f (IntMap b) # sequenceA :: Applicative f => IntMap (f a) -> f (IntMap a) # mapM :: Monad m => (a -> m b) -> IntMap a -> m (IntMap b) # sequence :: Monad m => IntMap (m a) -> m (IntMap a) #
Traversable SCC	Since: containers-0.5.9
Instance details Defined in Data.Graph Methods traverse :: Applicative f => (a -> f b) -> SCC a -> f (SCC b) # sequenceA :: Applicative f => SCC (f a) -> f (SCC a) # mapM :: Monad m => (a -> m b) -> SCC a -> m (SCC b) # sequence :: Monad m => SCC (m a) -> m (SCC a) #
Traversable Tree
Instance details Defined in Data.Tree Methods traverse :: Applicative f => (a -> f b) -> Tree a -> f (Tree b) # sequenceA :: Applicative f => Tree (f a) -> f (Tree a) # mapM :: Monad m => (a -> m b) -> Tree a -> m (Tree b) # sequence :: Monad m => Tree (m a) -> m (Tree a) #
Traversable Seq
Instance details Defined in Data.Sequence.Internal Methods traverse :: Applicative f => (a -> f b) -> Seq a -> f (Seq b) # sequenceA :: Applicative f => Seq (f a) -> f (Seq a) # mapM :: Monad m => (a -> m b) -> Seq a -> m (Seq b) # sequence :: Monad m => Seq (m a) -> m (Seq a) #
Traversable FingerTree
Instance details Defined in Data.Sequence.Internal Methods traverse :: Applicative f => (a -> f b) -> FingerTree a -> f (FingerTree b) # sequenceA :: Applicative f => FingerTree (f a) -> f (FingerTree a) # mapM :: Monad m => (a -> m b) -> FingerTree a -> m (FingerTree b) # sequence :: Monad m => FingerTree (m a) -> m (FingerTree a) #
Traversable Digit
Instance details Defined in Data.Sequence.Internal Methods traverse :: Applicative f => (a -> f b) -> Digit a -> f (Digit b) # sequenceA :: Applicative f => Digit (f a) -> f (Digit a) # mapM :: Monad m => (a -> m b) -> Digit a -> m (Digit b) # sequence :: Monad m => Digit (m a) -> m (Digit a) #
Traversable Node
Instance details Defined in Data.Sequence.Internal Methods traverse :: Applicative f => (a -> f b) -> Node a -> f (Node b) # sequenceA :: Applicative f => Node (f a) -> f (Node a) # mapM :: Monad m => (a -> m b) -> Node a -> m (Node b) # sequence :: Monad m => Node (m a) -> m (Node a) #
Traversable Elem
Instance details Defined in Data.Sequence.Internal Methods traverse :: Applicative f => (a -> f b) -> Elem a -> f (Elem b) # sequenceA :: Applicative f => Elem (f a) -> f (Elem a) # mapM :: Monad m => (a -> m b) -> Elem a -> m (Elem b) # sequence :: Monad m => Elem (m a) -> m (Elem a) #
Traversable ViewL
Instance details Defined in Data.Sequence.Internal Methods traverse :: Applicative f => (a -> f b) -> ViewL a -> f (ViewL b) # sequenceA :: Applicative f => ViewL (f a) -> f (ViewL a) # mapM :: Monad m => (a -> m b) -> ViewL a -> m (ViewL b) # sequence :: Monad m => ViewL (m a) -> m (ViewL a) #
Traversable ViewR
Instance details Defined in Data.Sequence.Internal Methods traverse :: Applicative f => (a -> f b) -> ViewR a -> f (ViewR b) # sequenceA :: Applicative f => ViewR (f a) -> f (ViewR a) # mapM :: Monad m => (a -> m b) -> ViewR a -> m (ViewR b) # sequence :: Monad m => ViewR (m a) -> m (ViewR a) #
Traversable DList
Instance details Defined in Data.DList.Internal Methods traverse :: Applicative f => (a -> f b) -> DList a -> f (DList b) # sequenceA :: Applicative f => DList (f a) -> f (DList a) # mapM :: Monad m => (a -> m b) -> DList a -> m (DList b) # sequence :: Monad m => DList (m a) -> m (DList a) #
Traversable Doc
Instance details Defined in Text.DocLayout Methods traverse :: Applicative f => (a -> f b) -> Doc a -> f (Doc b) # sequenceA :: Applicative f => Doc (f a) -> f (Doc a) # mapM :: Monad m => (a -> m b) -> Doc a -> m (Doc b) # sequence :: Monad m => Doc (m a) -> m (Doc a) #
Traversable HistoriedResponse
Instance details Defined in Network.HTTP.Client Methods traverse :: Applicative f => (a -> f b) -> HistoriedResponse a -> f (HistoriedResponse b) # sequenceA :: Applicative f => HistoriedResponse (f a) -> f (HistoriedResponse a) # mapM :: Monad m => (a -> m b) -> HistoriedResponse a -> m (HistoriedResponse b) # sequence :: Monad m => HistoriedResponse (m a) -> m (HistoriedResponse a) #
Traversable Response
Instance details Defined in Network.HTTP.Client.Types Methods traverse :: Applicative f => (a -> f b) -> Response a -> f (Response b) # sequenceA :: Applicative f => Response (f a) -> f (Response a) # mapM :: Monad m => (a -> m b) -> Response a -> m (Response b) # sequence :: Monad m => Response (m a) -> m (Response a) #
Traversable Root
Instance details Defined in Numeric.RootFinding Methods traverse :: Applicative f => (a -> f b) -> Root a -> f (Root b) # sequenceA :: Applicative f => Root (f a) -> f (Root a) # mapM :: Monad m => (a -> m b) -> Root a -> m (Root b) # sequence :: Monad m => Root (m a) -> m (Root a) #
Traversable SimpleDocStream	Transform a document based on its annotations, possibly leveraging `Applicative` effects.
Instance details Defined in Prettyprinter.Internal Methods traverse :: Applicative f => (a -> f b) -> SimpleDocStream a -> f (SimpleDocStream b) # sequenceA :: Applicative f => SimpleDocStream (f a) -> f (SimpleDocStream a) # mapM :: Monad m => (a -> m b) -> SimpleDocStream a -> m (SimpleDocStream b) # sequence :: Monad m => SimpleDocStream (m a) -> m (SimpleDocStream a) #
Traversable SmallArray
Instance details Defined in Data.Primitive.SmallArray Methods traverse :: Applicative f => (a -> f b) -> SmallArray a -> f (SmallArray b) # sequenceA :: Applicative f => SmallArray (f a) -> f (SmallArray a) # mapM :: Monad m => (a -> m b) -> SmallArray a -> m (SmallArray b) # sequence :: Monad m => SmallArray (m a) -> m (SmallArray a) #
Traversable Array
Instance details Defined in Data.Primitive.Array Methods traverse :: Applicative f => (a -> f b) -> Array a -> f (Array b) # sequenceA :: Applicative f => Array (f a) -> f (Array a) # mapM :: Monad m => (a -> m b) -> Array a -> m (Array b) # sequence :: Monad m => Array (m a) -> m (Array a) #
Traversable Maybe
Instance details Defined in Data.Strict.Maybe Methods traverse :: Applicative f => (a -> f b) -> Maybe a -> f (Maybe b) # sequenceA :: Applicative f => Maybe (f a) -> f (Maybe a) # mapM :: Monad m => (a -> m b) -> Maybe a -> m (Maybe b) # sequence :: Monad m => Maybe (m a) -> m (Maybe a) #
Traversable Vector
Instance details Defined in Data.Vector Methods traverse :: Applicative f => (a -> f b) -> Vector a -> f (Vector b) # sequenceA :: Applicative f => Vector (f a) -> f (Vector a) # mapM :: Monad m => (a -> m b) -> Vector a -> m (Vector b) # sequence :: Monad m => Vector (m a) -> m (Vector a) #
Traversable FormResult	Since: yesod-form-1.4.5
Instance details Defined in Yesod.Form.Types Methods traverse :: Applicative f => (a -> f b) -> FormResult a -> f (FormResult b) # sequenceA :: Applicative f => FormResult (f a) -> f (FormResult a) # mapM :: Monad m => (a -> m b) -> FormResult a -> m (FormResult b) # sequence :: Monad m => FormResult (m a) -> m (FormResult a) #
Traversable (Either a)	Since: base-4.7.0.0
Instance details Defined in Data.Traversable Methods traverse :: Applicative f => (a0 -> f b) -> Either a a0 -> f (Either a b) # sequenceA :: Applicative f => Either a (f a0) -> f (Either a a0) # mapM :: Monad m => (a0 -> m b) -> Either a a0 -> m (Either a b) # sequence :: Monad m => Either a (m a0) -> m (Either a a0) #
Traversable (V1 :: Type -> Type)	Since: base-4.9.0.0
Instance details Defined in Data.Traversable Methods traverse :: Applicative f => (a -> f b) -> V1 a -> f (V1 b) # sequenceA :: Applicative f => V1 (f a) -> f (V1 a) # mapM :: Monad m => (a -> m b) -> V1 a -> m (V1 b) # sequence :: Monad m => V1 (m a) -> m (V1 a) #
Traversable (U1 :: Type -> Type)	Since: base-4.9.0.0
Instance details Defined in Data.Traversable Methods traverse :: Applicative f => (a -> f b) -> U1 a -> f (U1 b) # sequenceA :: Applicative f => U1 (f a) -> f (U1 a) # mapM :: Monad m => (a -> m b) -> U1 a -> m (U1 b) # sequence :: Monad m => U1 (m a) -> m (U1 a) #
Traversable (UAddr :: Type -> Type)	Since: base-4.9.0.0
Instance details Defined in Data.Traversable Methods traverse :: Applicative f => (a -> f b) -> UAddr a -> f (UAddr b) # sequenceA :: Applicative f => UAddr (f a) -> f (UAddr a) # mapM :: Monad m => (a -> m b) -> UAddr a -> m (UAddr b) # sequence :: Monad m => UAddr (m a) -> m (UAddr a) #
Traversable (UChar :: Type -> Type)	Since: base-4.9.0.0
Instance details Defined in Data.Traversable Methods traverse :: Applicative f => (a -> f b) -> UChar a -> f (UChar b) # sequenceA :: Applicative f => UChar (f a) -> f (UChar a) # mapM :: Monad m => (a -> m b) -> UChar a -> m (UChar b) # sequence :: Monad m => UChar (m a) -> m (UChar a) #
Traversable (UDouble :: Type -> Type)	Since: base-4.9.0.0
Instance details Defined in Data.Traversable Methods traverse :: Applicative f => (a -> f b) -> UDouble a -> f (UDouble b) # sequenceA :: Applicative f => UDouble (f a) -> f (UDouble a) # mapM :: Monad m => (a -> m b) -> UDouble a -> m (UDouble b) # sequence :: Monad m => UDouble (m a) -> m (UDouble a) #
Traversable (UFloat :: Type -> Type)	Since: base-4.9.0.0
Instance details Defined in Data.Traversable Methods traverse :: Applicative f => (a -> f b) -> UFloat a -> f (UFloat b) # sequenceA :: Applicative f => UFloat (f a) -> f (UFloat a) # mapM :: Monad m => (a -> m b) -> UFloat a -> m (UFloat b) # sequence :: Monad m => UFloat (m a) -> m (UFloat a) #
Traversable (UInt :: Type -> Type)	Since: base-4.9.0.0
Instance details Defined in Data.Traversable Methods traverse :: Applicative f => (a -> f b) -> UInt a -> f (UInt b) # sequenceA :: Applicative f => UInt (f a) -> f (UInt a) # mapM :: Monad m => (a -> m b) -> UInt a -> m (UInt b) # sequence :: Monad m => UInt (m a) -> m (UInt a) #
Traversable (UWord :: Type -> Type)	Since: base-4.9.0.0
Instance details Defined in Data.Traversable Methods traverse :: Applicative f => (a -> f b) -> UWord a -> f (UWord b) # sequenceA :: Applicative f => UWord (f a) -> f (UWord a) # mapM :: Monad m => (a -> m b) -> UWord a -> m (UWord b) # sequence :: Monad m => UWord (m a) -> m (UWord a) #
Traversable ((,) a)	Since: base-4.7.0.0
Instance details Defined in Data.Traversable Methods traverse :: Applicative f => (a0 -> f b) -> (a, a0) -> f (a, b) # sequenceA :: Applicative f => (a, f a0) -> f (a, a0) # mapM :: Monad m => (a0 -> m b) -> (a, a0) -> m (a, b) # sequence :: Monad m => (a, m a0) -> m (a, a0) #
Traversable (HashMap k)
Instance details Defined in Data.HashMap.Internal Methods traverse :: Applicative f => (a -> f b) -> HashMap k a -> f (HashMap k b) # sequenceA :: Applicative f => HashMap k (f a) -> f (HashMap k a) # mapM :: Monad m => (a -> m b) -> HashMap k a -> m (HashMap k b) # sequence :: Monad m => HashMap k (m a) -> m (HashMap k a) #
Traversable (Map k)	Traverses in order of increasing key.
Instance details Defined in Data.Map.Internal Methods traverse :: Applicative f => (a -> f b) -> Map k a -> f (Map k b) # sequenceA :: Applicative f => Map k (f a) -> f (Map k a) # mapM :: Monad m => (a -> m b) -> Map k a -> m (Map k b) # sequence :: Monad m => Map k (m a) -> m (Map k a) #
Ix i => Traversable (Array i)	Since: base-2.1
Instance details Defined in Data.Traversable Methods traverse :: Applicative f => (a -> f b) -> Array i a -> f (Array i b) # sequenceA :: Applicative f => Array i (f a) -> f (Array i a) # mapM :: Monad m => (a -> m b) -> Array i a -> m (Array i b) # sequence :: Monad m => Array i (m a) -> m (Array i a) #
Traversable (Arg a)	Since: base-4.9.0.0
Instance details Defined in Data.Semigroup Methods traverse :: Applicative f => (a0 -> f b) -> Arg a a0 -> f (Arg a b) # sequenceA :: Applicative f => Arg a (f a0) -> f (Arg a a0) # mapM :: Monad m => (a0 -> m b) -> Arg a a0 -> m (Arg a b) # sequence :: Monad m => Arg a (m a0) -> m (Arg a a0) #
Traversable (Proxy :: Type -> Type)	Since: base-4.7.0.0
Instance details Defined in Data.Traversable Methods traverse :: Applicative f => (a -> f b) -> Proxy a -> f (Proxy b) # sequenceA :: Applicative f => Proxy (f a) -> f (Proxy a) # mapM :: Monad m => (a -> m b) -> Proxy a -> m (Proxy b) # sequence :: Monad m => Proxy (m a) -> m (Proxy a) #
Traversable f => Traversable (MaybeT f)
Instance details Defined in Control.Monad.Trans.Maybe Methods traverse :: Applicative f0 => (a -> f0 b) -> MaybeT f a -> f0 (MaybeT f b) # sequenceA :: Applicative f0 => MaybeT f (f0 a) -> f0 (MaybeT f a) # mapM :: Monad m => (a -> m b) -> MaybeT f a -> m (MaybeT f b) # sequence :: Monad m => MaybeT f (m a) -> m (MaybeT f a) #
Traversable f => Traversable (Free f)
Instance details Defined in Control.Monad.Free Methods traverse :: Applicative f0 => (a -> f0 b) -> Free f a -> f0 (Free f b) # sequenceA :: Applicative f0 => Free f (f0 a) -> f0 (Free f a) # mapM :: Monad m => (a -> m b) -> Free f a -> m (Free f b) # sequence :: Monad m => Free f (m a) -> m (Free f a) #
Traversable f => Traversable (ListT f)
Instance details Defined in Control.Monad.Trans.List Methods traverse :: Applicative f0 => (a -> f0 b) -> ListT f a -> f0 (ListT f b) # sequenceA :: Applicative f0 => ListT f (f0 a) -> f0 (ListT f a) # mapM :: Monad m => (a -> m b) -> ListT f a -> m (ListT f b) # sequence :: Monad m => ListT f (m a) -> m (ListT f a) #
Traversable (Pair e)
Instance details Defined in Data.Strict.Tuple Methods traverse :: Applicative f => (a -> f b) -> Pair e a -> f (Pair e b) # sequenceA :: Applicative f => Pair e (f a) -> f (Pair e a) # mapM :: Monad m => (a -> m b) -> Pair e a -> m (Pair e b) # sequence :: Monad m => Pair e (m a) -> m (Pair e a) #
Traversable (These a)
Instance details Defined in Data.Strict.These Methods traverse :: Applicative f => (a0 -> f b) -> These a a0 -> f (These a b) # sequenceA :: Applicative f => These a (f a0) -> f (These a a0) # mapM :: Monad m => (a0 -> m b) -> These a a0 -> m (These a b) # sequence :: Monad m => These a (m a0) -> m (These a a0) #
Traversable (Either e)
Instance details Defined in Data.Strict.Either Methods traverse :: Applicative f => (a -> f b) -> Either e a -> f (Either e b) # sequenceA :: Applicative f => Either e (f a) -> f (Either e a) # mapM :: Monad m => (a -> m b) -> Either e a -> m (Either e b) # sequence :: Monad m => Either e (m a) -> m (Either e a) #
Traversable (These a)
Instance details Defined in Data.These Methods traverse :: Applicative f => (a0 -> f b) -> These a a0 -> f (These a b) # sequenceA :: Applicative f => These a (f a0) -> f (These a a0) # mapM :: Monad m => (a0 -> m b) -> These a a0 -> m (These a b) # sequence :: Monad m => These a (m a0) -> m (These a a0) #
Traversable f => Traversable (Rec1 f)	Since: base-4.9.0.0
Instance details Defined in Data.Traversable Methods traverse :: Applicative f0 => (a -> f0 b) -> Rec1 f a -> f0 (Rec1 f b) # sequenceA :: Applicative f0 => Rec1 f (f0 a) -> f0 (Rec1 f a) # mapM :: Monad m => (a -> m b) -> Rec1 f a -> m (Rec1 f b) # sequence :: Monad m => Rec1 f (m a) -> m (Rec1 f a) #
Traversable (Const m :: Type -> Type)	Since: base-4.7.0.0
Instance details Defined in Data.Traversable Methods traverse :: Applicative f => (a -> f b) -> Const m a -> f (Const m b) # sequenceA :: Applicative f => Const m (f a) -> f (Const m a) # mapM :: Monad m0 => (a -> m0 b) -> Const m a -> m0 (Const m b) # sequence :: Monad m0 => Const m (m0 a) -> m0 (Const m a) #
Traversable f => Traversable (Ap f)	Since: base-4.12.0.0
Instance details Defined in Data.Traversable Methods traverse :: Applicative f0 => (a -> f0 b) -> Ap f a -> f0 (Ap f b) # sequenceA :: Applicative f0 => Ap f (f0 a) -> f0 (Ap f a) # mapM :: Monad m => (a -> m b) -> Ap f a -> m (Ap f b) # sequence :: Monad m => Ap f (m a) -> m (Ap f a) #
Traversable f => Traversable (Alt f)	Since: base-4.12.0.0
Instance details Defined in Data.Traversable Methods traverse :: Applicative f0 => (a -> f0 b) -> Alt f a -> f0 (Alt f b) # sequenceA :: Applicative f0 => Alt f (f0 a) -> f0 (Alt f a) # mapM :: Monad m => (a -> m b) -> Alt f a -> m (Alt f b) # sequence :: Monad m => Alt f (m a) -> m (Alt f a) #
Traversable f => Traversable (IdentityT f)
Instance details Defined in Control.Monad.Trans.Identity Methods traverse :: Applicative f0 => (a -> f0 b) -> IdentityT f a -> f0 (IdentityT f b) # sequenceA :: Applicative f0 => IdentityT f (f0 a) -> f0 (IdentityT f a) # mapM :: Monad m => (a -> m b) -> IdentityT f a -> m (IdentityT f b) # sequence :: Monad m => IdentityT f (m a) -> m (IdentityT f a) #
Traversable f => Traversable (WriterT w f)
Instance details Defined in Control.Monad.Trans.Writer.Strict Methods traverse :: Applicative f0 => (a -> f0 b) -> WriterT w f a -> f0 (WriterT w f b) # sequenceA :: Applicative f0 => WriterT w f (f0 a) -> f0 (WriterT w f a) # mapM :: Monad m => (a -> m b) -> WriterT w f a -> m (WriterT w f b) # sequence :: Monad m => WriterT w f (m a) -> m (WriterT w f a) #
Traversable f => Traversable (WriterT w f)
Instance details Defined in Control.Monad.Trans.Writer.Lazy Methods traverse :: Applicative f0 => (a -> f0 b) -> WriterT w f a -> f0 (WriterT w f b) # sequenceA :: Applicative f0 => WriterT w f (f0 a) -> f0 (WriterT w f a) # mapM :: Monad m => (a -> m b) -> WriterT w f a -> m (WriterT w f b) # sequence :: Monad m => WriterT w f (m a) -> m (WriterT w f a) #
Traversable f => Traversable (ExceptT e f)
Instance details Defined in Control.Monad.Trans.Except Methods traverse :: Applicative f0 => (a -> f0 b) -> ExceptT e f a -> f0 (ExceptT e f b) # sequenceA :: Applicative f0 => ExceptT e f (f0 a) -> f0 (ExceptT e f a) # mapM :: Monad m => (a -> m b) -> ExceptT e f a -> m (ExceptT e f b) # sequence :: Monad m => ExceptT e f (m a) -> m (ExceptT e f a) #
(Traversable m, Traversable f) => Traversable (FreeT f m)
Instance details Defined in Control.Monad.Free Methods traverse :: Applicative f0 => (a -> f0 b) -> FreeT f m a -> f0 (FreeT f m b) # sequenceA :: Applicative f0 => FreeT f m (f0 a) -> f0 (FreeT f m a) # mapM :: Monad m0 => (a -> m0 b) -> FreeT f m a -> m0 (FreeT f m b) # sequence :: Monad m0 => FreeT f m (m0 a) -> m0 (FreeT f m a) #
Traversable f => Traversable (ErrorT e f)
Instance details Defined in Control.Monad.Trans.Error Methods traverse :: Applicative f0 => (a -> f0 b) -> ErrorT e f a -> f0 (ErrorT e f b) # sequenceA :: Applicative f0 => ErrorT e f (f0 a) -> f0 (ErrorT e f a) # mapM :: Monad m => (a -> m b) -> ErrorT e f a -> m (ErrorT e f b) # sequence :: Monad m => ErrorT e f (m a) -> m (ErrorT e f a) #
Traversable (Tagged s)
Instance details Defined in Data.Tagged Methods traverse :: Applicative f => (a -> f b) -> Tagged s a -> f (Tagged s b) # sequenceA :: Applicative f => Tagged s (f a) -> f (Tagged s a) # mapM :: Monad m => (a -> m b) -> Tagged s a -> m (Tagged s b) # sequence :: Monad m => Tagged s (m a) -> m (Tagged s a) #
(Traversable f, Traversable g) => Traversable (These1 f g)
Instance details Defined in Data.Functor.These Methods traverse :: Applicative f0 => (a -> f0 b) -> These1 f g a -> f0 (These1 f g b) # sequenceA :: Applicative f0 => These1 f g (f0 a) -> f0 (These1 f g a) # mapM :: Monad m => (a -> m b) -> These1 f g a -> m (These1 f g b) # sequence :: Monad m => These1 f g (m a) -> m (These1 f g a) #
Traversable (K1 i c :: Type -> Type)	Since: base-4.9.0.0
Instance details Defined in Data.Traversable Methods traverse :: Applicative f => (a -> f b) -> K1 i c a -> f (K1 i c b) # sequenceA :: Applicative f => K1 i c (f a) -> f (K1 i c a) # mapM :: Monad m => (a -> m b) -> K1 i c a -> m (K1 i c b) # sequence :: Monad m => K1 i c (m a) -> m (K1 i c a) #
(Traversable f, Traversable g) => Traversable (f :+: g)	Since: base-4.9.0.0
Instance details Defined in Data.Traversable Methods traverse :: Applicative f0 => (a -> f0 b) -> (f :+: g) a -> f0 ((f :+: g) b) # sequenceA :: Applicative f0 => (f :+: g) (f0 a) -> f0 ((f :+: g) a) # mapM :: Monad m => (a -> m b) -> (f :+: g) a -> m ((f :+: g) b) # sequence :: Monad m => (f :+: g) (m a) -> m ((f :+: g) a) #
(Traversable f, Traversable g) => Traversable (f :*: g)	Since: base-4.9.0.0
Instance details Defined in Data.Traversable Methods traverse :: Applicative f0 => (a -> f0 b) -> (f :: g) a -> f0 ((f :: g) b) # sequenceA :: Applicative f0 => (f :: g) (f0 a) -> f0 ((f :: g) a) # mapM :: Monad m => (a -> m b) -> (f :: g) a -> m ((f :: g) b) # sequence :: Monad m => (f :: g) (m a) -> m ((f :: g) a) #
(Traversable f, Traversable g) => Traversable (Product f g)	Since: base-4.9.0.0
Instance details Defined in Data.Functor.Product Methods traverse :: Applicative f0 => (a -> f0 b) -> Product f g a -> f0 (Product f g b) # sequenceA :: Applicative f0 => Product f g (f0 a) -> f0 (Product f g a) # mapM :: Monad m => (a -> m b) -> Product f g a -> m (Product f g b) # sequence :: Monad m => Product f g (m a) -> m (Product f g a) #
(Traversable f, Traversable g) => Traversable (Sum f g)	Since: base-4.9.0.0
Instance details Defined in Data.Functor.Sum Methods traverse :: Applicative f0 => (a -> f0 b) -> Sum f g a -> f0 (Sum f g b) # sequenceA :: Applicative f0 => Sum f g (f0 a) -> f0 (Sum f g a) # mapM :: Monad m => (a -> m b) -> Sum f g a -> m (Sum f g b) # sequence :: Monad m => Sum f g (m a) -> m (Sum f g a) #
Traversable f => Traversable (M1 i c f)	Since: base-4.9.0.0
Instance details Defined in Data.Traversable Methods traverse :: Applicative f0 => (a -> f0 b) -> M1 i c f a -> f0 (M1 i c f b) # sequenceA :: Applicative f0 => M1 i c f (f0 a) -> f0 (M1 i c f a) # mapM :: Monad m => (a -> m b) -> M1 i c f a -> m (M1 i c f b) # sequence :: Monad m => M1 i c f (m a) -> m (M1 i c f a) #
(Traversable f, Traversable g) => Traversable (f :.: g)	Since: base-4.9.0.0
Instance details Defined in Data.Traversable Methods traverse :: Applicative f0 => (a -> f0 b) -> (f :.: g) a -> f0 ((f :.: g) b) # sequenceA :: Applicative f0 => (f :.: g) (f0 a) -> f0 ((f :.: g) a) # mapM :: Monad m => (a -> m b) -> (f :.: g) a -> m ((f :.: g) b) # sequence :: Monad m => (f :.: g) (m a) -> m ((f :.: g) a) #
(Traversable f, Traversable g) => Traversable (Compose f g)	Since: base-4.9.0.0
Instance details Defined in Data.Functor.Compose Methods traverse :: Applicative f0 => (a -> f0 b) -> Compose f g a -> f0 (Compose f g b) # sequenceA :: Applicative f0 => Compose f g (f0 a) -> f0 (Compose f g a) # mapM :: Monad m => (a -> m b) -> Compose f g a -> m (Compose f g b) # sequence :: Monad m => Compose f g (m a) -> m (Compose f g a) #
Bitraversable p => Traversable (Flip p a)
Instance details Defined in Data.Bifunctor.Flip Methods traverse :: Applicative f => (a0 -> f b) -> Flip p a a0 -> f (Flip p a b) # sequenceA :: Applicative f => Flip p a (f a0) -> f (Flip p a a0) # mapM :: Monad m => (a0 -> m b) -> Flip p a a0 -> m (Flip p a b) # sequence :: Monad m => Flip p a (m a0) -> m (Flip p a a0) #
(Traversable f, Bitraversable p) => Traversable (Tannen f p a)
Instance details Defined in Data.Bifunctor.Tannen Methods traverse :: Applicative f0 => (a0 -> f0 b) -> Tannen f p a a0 -> f0 (Tannen f p a b) # sequenceA :: Applicative f0 => Tannen f p a (f0 a0) -> f0 (Tannen f p a a0) # mapM :: Monad m => (a0 -> m b) -> Tannen f p a a0 -> m (Tannen f p a b) # sequence :: Monad m => Tannen f p a (m a0) -> m (Tannen f p a a0) #
(Bitraversable p, Traversable g) => Traversable (Biff p f g a)
Instance details Defined in Data.Bifunctor.Biff Methods traverse :: Applicative f0 => (a0 -> f0 b) -> Biff p f g a a0 -> f0 (Biff p f g a b) # sequenceA :: Applicative f0 => Biff p f g a (f0 a0) -> f0 (Biff p f g a a0) # mapM :: Monad m => (a0 -> m b) -> Biff p f g a a0 -> m (Biff p f g a b) # sequence :: Monad m => Biff p f g a (m a0) -> m (Biff p f g a a0) #

class Semigroup a where #

The class of semigroups (types with an associative binary operation).

Instances should satisfy the following:

Associativity: x <> (y <> z) = (x <> y) <> z

Since: base-4.9.0.0

Methods

(<>) :: a -> a -> a infixr 6 #

An associative operation.

>>> [1,2,3] <> [4,5,6]
[1,2,3,4,5,6]

Instances

Instances details

Semigroup Ordering	Since: base-4.9.0.0
Instance details Defined in GHC.Base Methods (<>) :: Ordering -> Ordering -> Ordering # sconcat :: NonEmpty Ordering -> Ordering # stimes :: Integral b => b -> Ordering -> Ordering #
Semigroup ()	Since: base-4.9.0.0
Instance details Defined in GHC.Base Methods (<>) :: () -> () -> () # sconcat :: NonEmpty () -> () # stimes :: Integral b => b -> () -> () #
Semigroup ByteString
Instance details Defined in Data.ByteString.Internal Methods (<>) :: ByteString -> ByteString -> ByteString # sconcat :: NonEmpty ByteString -> ByteString # stimes :: Integral b => b -> ByteString -> ByteString #
Semigroup ByteString
Instance details Defined in Data.ByteString.Lazy.Internal Methods (<>) :: ByteString -> ByteString -> ByteString # sconcat :: NonEmpty ByteString -> ByteString # stimes :: Integral b => b -> ByteString -> ByteString #
Semigroup Builder
Instance details Defined in Data.Text.Internal.Builder Methods (<>) :: Builder -> Builder -> Builder # sconcat :: NonEmpty Builder -> Builder # stimes :: Integral b => b -> Builder -> Builder #
Semigroup Builder
Instance details Defined in Data.ByteString.Builder.Internal Methods (<>) :: Builder -> Builder -> Builder # sconcat :: NonEmpty Builder -> Builder # stimes :: Integral b => b -> Builder -> Builder #
Semigroup Series
Instance details Defined in Data.Aeson.Encoding.Internal Methods (<>) :: Series -> Series -> Series # sconcat :: NonEmpty Series -> Series # stimes :: Integral b => b -> Series -> Series #
Semigroup More
Instance details Defined in Data.Attoparsec.Internal.Types Methods (<>) :: More -> More -> More # sconcat :: NonEmpty More -> More # stimes :: Integral b => b -> More -> More #
Semigroup Void	Since: base-4.9.0.0
Instance details Defined in Data.Void Methods (<>) :: Void -> Void -> Void # sconcat :: NonEmpty Void -> Void # stimes :: Integral b => b -> Void -> Void #
Semigroup All	Since: base-4.9.0.0
Instance details Defined in Data.Semigroup.Internal Methods (<>) :: All -> All -> All # sconcat :: NonEmpty All -> All # stimes :: Integral b => b -> All -> All #
Semigroup Any	Since: base-4.9.0.0
Instance details Defined in Data.Semigroup.Internal Methods (<>) :: Any -> Any -> Any # sconcat :: NonEmpty Any -> Any # stimes :: Integral b => b -> Any -> Any #
Semigroup ShortText
Instance details Defined in Data.Text.Short.Internal Methods (<>) :: ShortText -> ShortText -> ShortText # sconcat :: NonEmpty ShortText -> ShortText # stimes :: Integral b => b -> ShortText -> ShortText #
Semigroup String
Instance details Defined in Basement.UTF8.Base Methods (<>) :: String -> String -> String # sconcat :: NonEmpty String -> String # stimes :: Integral b => b -> String -> String #
Semigroup AttributeValue
Instance details Defined in Text.Blaze.Internal Methods (<>) :: AttributeValue -> AttributeValue -> AttributeValue # sconcat :: NonEmpty AttributeValue -> AttributeValue # stimes :: Integral b => b -> AttributeValue -> AttributeValue #
Semigroup Attribute
Instance details Defined in Text.Blaze.Internal Methods (<>) :: Attribute -> Attribute -> Attribute # sconcat :: NonEmpty Attribute -> Attribute # stimes :: Integral b => b -> Attribute -> Attribute #
Semigroup ChoiceString
Instance details Defined in Text.Blaze.Internal Methods (<>) :: ChoiceString -> ChoiceString -> ChoiceString # sconcat :: NonEmpty ChoiceString -> ChoiceString # stimes :: Integral b => b -> ChoiceString -> ChoiceString #
Semigroup IntSet	Since: containers-0.5.7
Instance details Defined in Data.IntSet.Internal Methods (<>) :: IntSet -> IntSet -> IntSet # sconcat :: NonEmpty IntSet -> IntSet # stimes :: Integral b => b -> IntSet -> IntSet #
Semigroup LogStr
Instance details Defined in System.Log.FastLogger.LogStr Methods (<>) :: LogStr -> LogStr -> LogStr # sconcat :: NonEmpty LogStr -> LogStr # stimes :: Integral b => b -> LogStr -> LogStr #
Semigroup WideBuilder
Instance details Defined in Text.WideString Methods (<>) :: WideBuilder -> WideBuilder -> WideBuilder # sconcat :: NonEmpty WideBuilder -> WideBuilder # stimes :: Integral b => b -> WideBuilder -> WideBuilder #
Semigroup Summary
Instance details Defined in Test.Hspec.Core.Runner Methods (<>) :: Summary -> Summary -> Summary # sconcat :: NonEmpty Summary -> Summary # stimes :: Integral b => b -> Summary -> Summary #
Semigroup CookieJar
Instance details Defined in Network.HTTP.Client.Types Methods (<>) :: CookieJar -> CookieJar -> CookieJar # sconcat :: NonEmpty CookieJar -> CookieJar # stimes :: Integral b => b -> CookieJar -> CookieJar #
Semigroup RequestBody
Instance details Defined in Network.HTTP.Client.Types Methods (<>) :: RequestBody -> RequestBody -> RequestBody # sconcat :: NonEmpty RequestBody -> RequestBody # stimes :: Integral b => b -> RequestBody -> RequestBody #
Semigroup Pos
Instance details Defined in Text.Megaparsec.Pos Methods (<>) :: Pos -> Pos -> Pos # sconcat :: NonEmpty Pos -> Pos # stimes :: Integral b => b -> Pos -> Pos #
Semigroup MsgFlag
Instance details Defined in Network.Socket.Flag Methods (<>) :: MsgFlag -> MsgFlag -> MsgFlag # sconcat :: NonEmpty MsgFlag -> MsgFlag # stimes :: Integral b => b -> MsgFlag -> MsgFlag #
Semigroup LinesWithComments
Instance details Defined in Database.Persist.Quasi.Internal Methods (<>) :: LinesWithComments -> LinesWithComments -> LinesWithComments # sconcat :: NonEmpty LinesWithComments -> LinesWithComments # stimes :: Integral b => b -> LinesWithComments -> LinesWithComments #
Semigroup Doc
Instance details Defined in Text.PrettyPrint.HughesPJ Methods (<>) :: Doc -> Doc -> Doc # sconcat :: NonEmpty Doc -> Doc # stimes :: Integral b => b -> Doc -> Doc #
Semigroup AnsiStyle	Keep the first decision for each of foreground color, background color, boldness, italication, and underlining. If a certain style is not set, the terminal’s default will be used. Example: `color` `Red` `<>` `color` `Green` is red because the first color wins, and not bold because (or if) that’s the terminal’s default.
Instance details Defined in Prettyprinter.Render.Terminal.Internal Methods (<>) :: AnsiStyle -> AnsiStyle -> AnsiStyle # sconcat :: NonEmpty AnsiStyle -> AnsiStyle # stimes :: Integral b => b -> AnsiStyle -> AnsiStyle #
Semigroup ByteArray
Instance details Defined in Data.Primitive.ByteArray Methods (<>) :: ByteArray -> ByteArray -> ByteArray # sconcat :: NonEmpty ByteArray -> ByteArray # stimes :: Integral b => b -> ByteArray -> ByteArray #
Semigroup Mixin
Instance details Defined in Text.Internal.Css Methods (<>) :: Mixin -> Mixin -> Mixin # sconcat :: NonEmpty Mixin -> Mixin # stimes :: Integral b => b -> Mixin -> Mixin #
Semigroup Javascript
Instance details Defined in Text.Julius Methods (<>) :: Javascript -> Javascript -> Javascript # sconcat :: NonEmpty Javascript -> Javascript # stimes :: Integral b => b -> Javascript -> Javascript #
Semigroup CalendarDiffTime	Additive
Instance details Defined in Data.Time.LocalTime.Internal.CalendarDiffTime Methods (<>) :: CalendarDiffTime -> CalendarDiffTime -> CalendarDiffTime # sconcat :: NonEmpty CalendarDiffTime -> CalendarDiffTime # stimes :: Integral b => b -> CalendarDiffTime -> CalendarDiffTime #
Semigroup CalendarDiffDays	Additive
Instance details Defined in Data.Time.Calendar.CalendarDiffDays Methods (<>) :: CalendarDiffDays -> CalendarDiffDays -> CalendarDiffDays # sconcat :: NonEmpty CalendarDiffDays -> CalendarDiffDays # stimes :: Integral b => b -> CalendarDiffDays -> CalendarDiffDays #
Semigroup Enctype
Instance details Defined in Yesod.Form.Types Methods (<>) :: Enctype -> Enctype -> Enctype # sconcat :: NonEmpty Enctype -> Enctype # stimes :: Integral b => b -> Enctype -> Enctype #
Semigroup LiteApp
Instance details Defined in Yesod.Core.Internal.LiteApp Methods (<>) :: LiteApp -> LiteApp -> LiteApp # sconcat :: NonEmpty LiteApp -> LiteApp # stimes :: Integral b => b -> LiteApp -> LiteApp #
Semigroup UnicodeWidthMatch
Instance details Defined in Text.DocLayout Methods (<>) :: UnicodeWidthMatch -> UnicodeWidthMatch -> UnicodeWidthMatch # sconcat :: NonEmpty UnicodeWidthMatch -> UnicodeWidthMatch # stimes :: Integral b => b -> UnicodeWidthMatch -> UnicodeWidthMatch #
Semigroup DigitGrp
Instance details Defined in Hledger.Read.Common Methods (<>) :: DigitGrp -> DigitGrp -> DigitGrp # sconcat :: NonEmpty DigitGrp -> DigitGrp # stimes :: Integral b => b -> DigitGrp -> DigitGrp #
Semigroup [a]	Since: base-4.9.0.0
Instance details Defined in GHC.Base Methods (<>) :: [a] -> [a] -> [a] # sconcat :: NonEmpty [a] -> [a] # stimes :: Integral b => b -> [a] -> [a] #
Semigroup a => Semigroup (Maybe a)	Since: base-4.9.0.0
Instance details Defined in GHC.Base Methods (<>) :: Maybe a -> Maybe a -> Maybe a # sconcat :: NonEmpty (Maybe a) -> Maybe a # stimes :: Integral b => b -> Maybe a -> Maybe a #
Semigroup a => Semigroup (IO a)	Since: base-4.10.0.0
Instance details Defined in GHC.Base Methods (<>) :: IO a -> IO a -> IO a # sconcat :: NonEmpty (IO a) -> IO a # stimes :: Integral b => b -> IO a -> IO a #
Semigroup p => Semigroup (Par1 p)	Since: base-4.12.0.0
Instance details Defined in GHC.Generics Methods (<>) :: Par1 p -> Par1 p -> Par1 p # sconcat :: NonEmpty (Par1 p) -> Par1 p # stimes :: Integral b => b -> Par1 p -> Par1 p #
Semigroup (IResult a)
Instance details Defined in Data.Aeson.Types.Internal Methods (<>) :: IResult a -> IResult a -> IResult a # sconcat :: NonEmpty (IResult a) -> IResult a # stimes :: Integral b => b -> IResult a -> IResult a #
Semigroup (Result a)
Instance details Defined in Data.Aeson.Types.Internal Methods (<>) :: Result a -> Result a -> Result a # sconcat :: NonEmpty (Result a) -> Result a # stimes :: Integral b => b -> Result a -> Result a #
Semigroup (Parser a)
Instance details Defined in Data.Aeson.Types.Internal Methods (<>) :: Parser a -> Parser a -> Parser a # sconcat :: NonEmpty (Parser a) -> Parser a # stimes :: Integral b => b -> Parser a -> Parser a #
Ord a => Semigroup (Min a)	Since: base-4.9.0.0
Instance details Defined in Data.Semigroup Methods (<>) :: Min a -> Min a -> Min a # sconcat :: NonEmpty (Min a) -> Min a # stimes :: Integral b => b -> Min a -> Min a #
Ord a => Semigroup (Max a)	Since: base-4.9.0.0
Instance details Defined in Data.Semigroup Methods (<>) :: Max a -> Max a -> Max a # sconcat :: NonEmpty (Max a) -> Max a # stimes :: Integral b => b -> Max a -> Max a #
Semigroup (First a)	Since: base-4.9.0.0
Instance details Defined in Data.Semigroup Methods (<>) :: First a -> First a -> First a # sconcat :: NonEmpty (First a) -> First a # stimes :: Integral b => b -> First a -> First a #
Semigroup (Last a)	Since: base-4.9.0.0
Instance details Defined in Data.Semigroup Methods (<>) :: Last a -> Last a -> Last a # sconcat :: NonEmpty (Last a) -> Last a # stimes :: Integral b => b -> Last a -> Last a #
Monoid m => Semigroup (WrappedMonoid m)	Since: base-4.9.0.0
Instance details Defined in Data.Semigroup Methods (<>) :: WrappedMonoid m -> WrappedMonoid m -> WrappedMonoid m # sconcat :: NonEmpty (WrappedMonoid m) -> WrappedMonoid m # stimes :: Integral b => b -> WrappedMonoid m -> WrappedMonoid m #
Semigroup a => Semigroup (Option a)	Since: base-4.9.0.0
Instance details Defined in Data.Semigroup Methods (<>) :: Option a -> Option a -> Option a # sconcat :: NonEmpty (Option a) -> Option a # stimes :: Integral b => b -> Option a -> Option a #
Semigroup a => Semigroup (Identity a)	Since: base-4.9.0.0
Instance details Defined in Data.Functor.Identity Methods (<>) :: Identity a -> Identity a -> Identity a # sconcat :: NonEmpty (Identity a) -> Identity a # stimes :: Integral b => b -> Identity a -> Identity a #
Semigroup (First a)	Since: base-4.9.0.0
Instance details Defined in Data.Monoid Methods (<>) :: First a -> First a -> First a # sconcat :: NonEmpty (First a) -> First a # stimes :: Integral b => b -> First a -> First a #
Semigroup (Last a)	Since: base-4.9.0.0
Instance details Defined in Data.Monoid Methods (<>) :: Last a -> Last a -> Last a # sconcat :: NonEmpty (Last a) -> Last a # stimes :: Integral b => b -> Last a -> Last a #
Semigroup a => Semigroup (Dual a)	Since: base-4.9.0.0
Instance details Defined in Data.Semigroup.Internal Methods (<>) :: Dual a -> Dual a -> Dual a # sconcat :: NonEmpty (Dual a) -> Dual a # stimes :: Integral b => b -> Dual a -> Dual a #
Semigroup (Endo a)	Since: base-4.9.0.0
Instance details Defined in Data.Semigroup.Internal Methods (<>) :: Endo a -> Endo a -> Endo a # sconcat :: NonEmpty (Endo a) -> Endo a # stimes :: Integral b => b -> Endo a -> Endo a #
Num a => Semigroup (Sum a)	Since: base-4.9.0.0
Instance details Defined in Data.Semigroup.Internal Methods (<>) :: Sum a -> Sum a -> Sum a # sconcat :: NonEmpty (Sum a) -> Sum a # stimes :: Integral b => b -> Sum a -> Sum a #
Num a => Semigroup (Product a)	Since: base-4.9.0.0
Instance details Defined in Data.Semigroup.Internal Methods (<>) :: Product a -> Product a -> Product a # sconcat :: NonEmpty (Product a) -> Product a # stimes :: Integral b => b -> Product a -> Product a #
Semigroup a => Semigroup (Down a)	Since: base-4.11.0.0
Instance details Defined in Data.Ord Methods (<>) :: Down a -> Down a -> Down a # sconcat :: NonEmpty (Down a) -> Down a # stimes :: Integral b => b -> Down a -> Down a #
Semigroup (NonEmpty a)	Since: base-4.9.0.0
Instance details Defined in GHC.Base Methods (<>) :: NonEmpty a -> NonEmpty a -> NonEmpty a # sconcat :: NonEmpty (NonEmpty a) -> NonEmpty a # stimes :: Integral b => b -> NonEmpty a -> NonEmpty a #
PrimType ty => Semigroup (UArray ty)
Instance details Defined in Basement.UArray.Base Methods (<>) :: UArray ty -> UArray ty -> UArray ty # sconcat :: NonEmpty (UArray ty) -> UArray ty # stimes :: Integral b => b -> UArray ty -> UArray ty #
PrimType ty => Semigroup (Block ty)
Instance details Defined in Basement.Block.Base Methods (<>) :: Block ty -> Block ty -> Block ty # sconcat :: NonEmpty (Block ty) -> Block ty # stimes :: Integral b => b -> Block ty -> Block ty #
Semigroup (CountOf ty)
Instance details Defined in Basement.Types.OffsetSize Methods (<>) :: CountOf ty -> CountOf ty -> CountOf ty # sconcat :: NonEmpty (CountOf ty) -> CountOf ty # stimes :: Integral b => b -> CountOf ty -> CountOf ty #
Monoid a => Semigroup (MarkupM a)
Instance details Defined in Text.Blaze.Internal Methods (<>) :: MarkupM a -> MarkupM a -> MarkupM a # sconcat :: NonEmpty (MarkupM a) -> MarkupM a # stimes :: Integral b => b -> MarkupM a -> MarkupM a #
Semigroup s => Semigroup (CI s)
Instance details Defined in Data.CaseInsensitive.Internal Methods (<>) :: CI s -> CI s -> CI s # sconcat :: NonEmpty (CI s) -> CI s # stimes :: Integral b => b -> CI s -> CI s #
Semigroup (Group a)
Instance details Defined in System.Console.CmdArgs.Explicit.Type Methods (<>) :: Group a -> Group a -> Group a # sconcat :: NonEmpty (Group a) -> Group a # stimes :: Integral b => b -> Group a -> Group a #
Semigroup (IntMap a)	Since: containers-0.5.7
Instance details Defined in Data.IntMap.Internal Methods (<>) :: IntMap a -> IntMap a -> IntMap a # sconcat :: NonEmpty (IntMap a) -> IntMap a # stimes :: Integral b => b -> IntMap a -> IntMap a #
Semigroup (Seq a)	Since: containers-0.5.7
Instance details Defined in Data.Sequence.Internal Methods (<>) :: Seq a -> Seq a -> Seq a # sconcat :: NonEmpty (Seq a) -> Seq a # stimes :: Integral b => b -> Seq a -> Seq a #
Ord a => Semigroup (Set a)	Since: containers-0.5.7
Instance details Defined in Data.Set.Internal Methods (<>) :: Set a -> Set a -> Set a # sconcat :: NonEmpty (Set a) -> Set a # stimes :: Integral b => b -> Set a -> Set a #
Semigroup (DNonEmpty a)
Instance details Defined in Data.DList.DNonEmpty.Internal Methods (<>) :: DNonEmpty a -> DNonEmpty a -> DNonEmpty a # sconcat :: NonEmpty (DNonEmpty a) -> DNonEmpty a # stimes :: Integral b => b -> DNonEmpty a -> DNonEmpty a #
Semigroup (DList a)
Instance details Defined in Data.DList.Internal Methods (<>) :: DList a -> DList a -> DList a # sconcat :: NonEmpty (DList a) -> DList a # stimes :: Integral b => b -> DList a -> DList a #
Semigroup (Doc a)
Instance details Defined in Text.DocLayout Methods (<>) :: Doc a -> Doc a -> Doc a # sconcat :: NonEmpty (Doc a) -> Doc a # stimes :: Integral b => b -> Doc a -> Doc a #
Semigroup (FinalParseError' e)
Instance details Defined in Text.Megaparsec.Custom Methods (<>) :: FinalParseError' e -> FinalParseError' e -> FinalParseError' e # sconcat :: NonEmpty (FinalParseError' e) -> FinalParseError' e # stimes :: Integral b => b -> FinalParseError' e -> FinalParseError' e #
Semigroup (Hints t)
Instance details Defined in Text.Megaparsec.Internal Methods (<>) :: Hints t -> Hints t -> Hints t # sconcat :: NonEmpty (Hints t) -> Hints t # stimes :: Integral b => b -> Hints t -> Hints t #
(Semigroup mono, GrowingAppend mono) => Semigroup (NonNull mono)
Instance details Defined in Data.NonNull Methods (<>) :: NonNull mono -> NonNull mono -> NonNull mono # sconcat :: NonEmpty (NonNull mono) -> NonNull mono # stimes :: Integral b => b -> NonNull mono -> NonNull mono #
Semigroup (Doc a)
Instance details Defined in Text.PrettyPrint.Annotated.HughesPJ Methods (<>) :: Doc a -> Doc a -> Doc a # sconcat :: NonEmpty (Doc a) -> Doc a # stimes :: Integral b => b -> Doc a -> Doc a #
Semigroup (Doc ann)	x `<>` y = `hcat` [x, y] `>>>` `"hello" <> "world" :: Doc ann`helloworld
Instance details Defined in Prettyprinter.Internal Methods (<>) :: Doc ann -> Doc ann -> Doc ann # sconcat :: NonEmpty (Doc ann) -> Doc ann # stimes :: Integral b => b -> Doc ann -> Doc ann #
Semigroup (PrimArray a)	Since: primitive-0.6.4.0
Instance details Defined in Data.Primitive.PrimArray Methods (<>) :: PrimArray a -> PrimArray a -> PrimArray a # sconcat :: NonEmpty (PrimArray a) -> PrimArray a # stimes :: Integral b => b -> PrimArray a -> PrimArray a #
Semigroup (SmallArray a)	Since: primitive-0.6.3.0
Instance details Defined in Data.Primitive.SmallArray Methods (<>) :: SmallArray a -> SmallArray a -> SmallArray a # sconcat :: NonEmpty (SmallArray a) -> SmallArray a # stimes :: Integral b => b -> SmallArray a -> SmallArray a #
Semigroup (Array a)	Since: primitive-0.6.3.0
Instance details Defined in Data.Primitive.Array Methods (<>) :: Array a -> Array a -> Array a # sconcat :: NonEmpty (Array a) -> Array a # stimes :: Integral b => b -> Array a -> Array a #
Semigroup a => Semigroup (Maybe a)
Instance details Defined in Data.Strict.Maybe Methods (<>) :: Maybe a -> Maybe a -> Maybe a # sconcat :: NonEmpty (Maybe a) -> Maybe a # stimes :: Integral b => b -> Maybe a -> Maybe a #
(Hashable a, Eq a) => Semigroup (HashSet a)	`<>` = `union` O(n+m) To obtain good performance, the smaller set must be presented as the first argument. Examples Expand `>>>` `fromList [1,2] <> fromList [2,3]`fromList [1,2,3]
Instance details Defined in Data.HashSet.Internal Methods (<>) :: HashSet a -> HashSet a -> HashSet a # sconcat :: NonEmpty (HashSet a) -> HashSet a # stimes :: Integral b => b -> HashSet a -> HashSet a #
Semigroup (Vault s)
Instance details Defined in Data.Vault.ST.Lazy Methods (<>) :: Vault s -> Vault s -> Vault s # sconcat :: NonEmpty (Vault s) -> Vault s # stimes :: Integral b => b -> Vault s -> Vault s #
Storable a => Semigroup (Vector a)
Instance details Defined in Data.Vector.Storable Methods (<>) :: Vector a -> Vector a -> Vector a # sconcat :: NonEmpty (Vector a) -> Vector a # stimes :: Integral b => b -> Vector a -> Vector a #
Prim a => Semigroup (Vector a)
Instance details Defined in Data.Vector.Primitive Methods (<>) :: Vector a -> Vector a -> Vector a # sconcat :: NonEmpty (Vector a) -> Vector a # stimes :: Integral b => b -> Vector a -> Vector a #
Semigroup (Vector a)
Instance details Defined in Data.Vector Methods (<>) :: Vector a -> Vector a -> Vector a # sconcat :: NonEmpty (Vector a) -> Vector a # stimes :: Integral b => b -> Vector a -> Vector a #
Semigroup m => Semigroup (FormResult m)
Instance details Defined in Yesod.Form.Types Methods (<>) :: FormResult m -> FormResult m -> FormResult m # sconcat :: NonEmpty (FormResult m) -> FormResult m # stimes :: Integral b => b -> FormResult m -> FormResult m #
Semigroup (UniqueList x)
Instance details Defined in Yesod.Core.Types Methods (<>) :: UniqueList x -> UniqueList x -> UniqueList x # sconcat :: NonEmpty (UniqueList x) -> UniqueList x # stimes :: Integral b => b -> UniqueList x -> UniqueList x #
Semigroup (Head url)
Instance details Defined in Yesod.Core.Types Methods (<>) :: Head url -> Head url -> Head url # sconcat :: NonEmpty (Head url) -> Head url # stimes :: Integral b => b -> Head url -> Head url #
Semigroup (Body url)
Instance details Defined in Yesod.Core.Types Methods (<>) :: Body url -> Body url -> Body url # sconcat :: NonEmpty (Body url) -> Body url # stimes :: Integral b => b -> Body url -> Body url #
Semigroup (GWData a)
Instance details Defined in Yesod.Core.Types Methods (<>) :: GWData a -> GWData a -> GWData a # sconcat :: NonEmpty (GWData a) -> GWData a # stimes :: Integral b => b -> GWData a -> GWData a #
Semigroup (MergeSet a)
Instance details Defined in Data.Set.Internal Methods (<>) :: MergeSet a -> MergeSet a -> MergeSet a # sconcat :: NonEmpty (MergeSet a) -> MergeSet a # stimes :: Integral b => b -> MergeSet a -> MergeSet a #
Semigroup b => Semigroup (a -> b)	Since: base-4.9.0.0
Instance details Defined in GHC.Base Methods (<>) :: (a -> b) -> (a -> b) -> a -> b # sconcat :: NonEmpty (a -> b) -> a -> b # stimes :: Integral b0 => b0 -> (a -> b) -> a -> b #
Semigroup (Either a b)	Since: base-4.9.0.0
Instance details Defined in Data.Either Methods (<>) :: Either a b -> Either a b -> Either a b # sconcat :: NonEmpty (Either a b) -> Either a b # stimes :: Integral b0 => b0 -> Either a b -> Either a b #
Semigroup (V1 p)	Since: base-4.12.0.0
Instance details Defined in GHC.Generics Methods (<>) :: V1 p -> V1 p -> V1 p # sconcat :: NonEmpty (V1 p) -> V1 p # stimes :: Integral b => b -> V1 p -> V1 p #
Semigroup (U1 p)	Since: base-4.12.0.0
Instance details Defined in GHC.Generics Methods (<>) :: U1 p -> U1 p -> U1 p # sconcat :: NonEmpty (U1 p) -> U1 p # stimes :: Integral b => b -> U1 p -> U1 p #
(Semigroup a, Semigroup b) => Semigroup (a, b)	Since: base-4.9.0.0
Instance details Defined in GHC.Base Methods (<>) :: (a, b) -> (a, b) -> (a, b) # sconcat :: NonEmpty (a, b) -> (a, b) # stimes :: Integral b0 => b0 -> (a, b) -> (a, b) #
Semigroup a => Semigroup (ST s a)	Since: base-4.11.0.0
Instance details Defined in GHC.ST Methods (<>) :: ST s a -> ST s a -> ST s a # sconcat :: NonEmpty (ST s a) -> ST s a # stimes :: Integral b => b -> ST s a -> ST s a #
(Eq k, Hashable k) => Semigroup (HashMap k v)	`<>` = `union` If a key occurs in both maps, the mapping from the first will be the mapping in the result. Examples Expand `>>>` `fromList [(1,'a'),(2,'b')] <> fromList [(2,'c'),(3,'d')]`fromList [(1,'a'),(2,'b'),(3,'d')]
Instance details Defined in Data.HashMap.Internal Methods (<>) :: HashMap k v -> HashMap k v -> HashMap k v # sconcat :: NonEmpty (HashMap k v) -> HashMap k v # stimes :: Integral b => b -> HashMap k v -> HashMap k v #
Ord k => Semigroup (Map k v)
Instance details Defined in Data.Map.Internal Methods (<>) :: Map k v -> Map k v -> Map k v # sconcat :: NonEmpty (Map k v) -> Map k v # stimes :: Integral b => b -> Map k v -> Map k v #
Semigroup (Parser i a)
Instance details Defined in Data.Attoparsec.Internal.Types Methods (<>) :: Parser i a -> Parser i a -> Parser i a # sconcat :: NonEmpty (Parser i a) -> Parser i a # stimes :: Integral b => b -> Parser i a -> Parser i a #
Semigroup (Proxy s)	Since: base-4.9.0.0
Instance details Defined in Data.Proxy Methods (<>) :: Proxy s -> Proxy s -> Proxy s # sconcat :: NonEmpty (Proxy s) -> Proxy s # stimes :: Integral b => b -> Proxy s -> Proxy s #
Semigroup b => Semigroup (PeriodicReportRow a b)
Instance details Defined in Hledger.Reports.ReportTypes Methods (<>) :: PeriodicReportRow a b -> PeriodicReportRow a b -> PeriodicReportRow a b # sconcat :: NonEmpty (PeriodicReportRow a b) -> PeriodicReportRow a b # stimes :: Integral b0 => b0 -> PeriodicReportRow a b -> PeriodicReportRow a b #
(Stream s, Ord e) => Semigroup (ParseError s e)
Instance details Defined in Text.Megaparsec.Error Methods (<>) :: ParseError s e -> ParseError s e -> ParseError s e # sconcat :: NonEmpty (ParseError s e) -> ParseError s e # stimes :: Integral b => b -> ParseError s e -> ParseError s e #
(Semigroup a, Semigroup b) => Semigroup (Pair a b)
Instance details Defined in Data.Strict.Tuple Methods (<>) :: Pair a b -> Pair a b -> Pair a b # sconcat :: NonEmpty (Pair a b) -> Pair a b # stimes :: Integral b0 => b0 -> Pair a b -> Pair a b #
(Semigroup a, Semigroup b) => Semigroup (These a b)
Instance details Defined in Data.Strict.These Methods (<>) :: These a b -> These a b -> These a b # sconcat :: NonEmpty (These a b) -> These a b # stimes :: Integral b0 => b0 -> These a b -> These a b #
Semigroup (Either a b)
Instance details Defined in Data.Strict.Either Methods (<>) :: Either a b -> Either a b -> Either a b # sconcat :: NonEmpty (Either a b) -> Either a b # stimes :: Integral b0 => b0 -> Either a b -> Either a b #
(Semigroup a, Semigroup b) => Semigroup (These a b)
Instance details Defined in Data.These Methods (<>) :: These a b -> These a b -> These a b # sconcat :: NonEmpty (These a b) -> These a b # stimes :: Integral b0 => b0 -> These a b -> These a b #
(MonadUnliftIO m, Semigroup a) => Semigroup (Concurrently m a)	Only defined by `async` for `base >= 4.9`. Since: unliftio-0.1.0.0
Instance details Defined in UnliftIO.Internals.Async Methods (<>) :: Concurrently m a -> Concurrently m a -> Concurrently m a # sconcat :: NonEmpty (Concurrently m a) -> Concurrently m a # stimes :: Integral b => b -> Concurrently m a -> Concurrently m a #
(MonadUnliftIO m, Semigroup a) => Semigroup (Conc m a)	Since: unliftio-0.2.9.0
Instance details Defined in UnliftIO.Internals.Async Methods (<>) :: Conc m a -> Conc m a -> Conc m a # sconcat :: NonEmpty (Conc m a) -> Conc m a # stimes :: Integral b => b -> Conc m a -> Conc m a #
(Monad m, Semigroup a) => Semigroup (AForm m a)
Instance details Defined in Yesod.Form.Types Methods (<>) :: AForm m a -> AForm m a -> AForm m a # sconcat :: NonEmpty (AForm m a) -> AForm m a # stimes :: Integral b => b -> AForm m a -> AForm m a #
a ~ () => Semigroup (WidgetFor site a)
Instance details Defined in Yesod.Core.Types Methods (<>) :: WidgetFor site a -> WidgetFor site a -> WidgetFor site a # sconcat :: NonEmpty (WidgetFor site a) -> WidgetFor site a # stimes :: Integral b => b -> WidgetFor site a -> WidgetFor site a #
Semigroup (f p) => Semigroup (Rec1 f p)	Since: base-4.12.0.0
Instance details Defined in GHC.Generics Methods (<>) :: Rec1 f p -> Rec1 f p -> Rec1 f p # sconcat :: NonEmpty (Rec1 f p) -> Rec1 f p # stimes :: Integral b => b -> Rec1 f p -> Rec1 f p #
(Semigroup a, Semigroup b, Semigroup c) => Semigroup (a, b, c)	Since: base-4.9.0.0
Instance details Defined in GHC.Base Methods (<>) :: (a, b, c) -> (a, b, c) -> (a, b, c) # sconcat :: NonEmpty (a, b, c) -> (a, b, c) # stimes :: Integral b0 => b0 -> (a, b, c) -> (a, b, c) #
Semigroup a => Semigroup (Const a b)	Since: base-4.9.0.0
Instance details Defined in Data.Functor.Const Methods (<>) :: Const a b -> Const a b -> Const a b # sconcat :: NonEmpty (Const a b) -> Const a b # stimes :: Integral b0 => b0 -> Const a b -> Const a b #
(Applicative f, Semigroup a) => Semigroup (Ap f a)	Since: base-4.12.0.0
Instance details Defined in Data.Monoid Methods (<>) :: Ap f a -> Ap f a -> Ap f a # sconcat :: NonEmpty (Ap f a) -> Ap f a # stimes :: Integral b => b -> Ap f a -> Ap f a #
Alternative f => Semigroup (Alt f a)	Since: base-4.9.0.0
Instance details Defined in Data.Semigroup.Internal Methods (<>) :: Alt f a -> Alt f a -> Alt f a # sconcat :: NonEmpty (Alt f a) -> Alt f a # stimes :: Integral b => b -> Alt f a -> Alt f a #
Semigroup a => Semigroup (Tagged s a)
Instance details Defined in Data.Tagged Methods (<>) :: Tagged s a -> Tagged s a -> Tagged s a # sconcat :: NonEmpty (Tagged s a) -> Tagged s a # stimes :: Integral b => b -> Tagged s a -> Tagged s a #
Semigroup c => Semigroup (K1 i c p)	Since: base-4.12.0.0
Instance details Defined in GHC.Generics Methods (<>) :: K1 i c p -> K1 i c p -> K1 i c p # sconcat :: NonEmpty (K1 i c p) -> K1 i c p # stimes :: Integral b => b -> K1 i c p -> K1 i c p #
(Semigroup (f p), Semigroup (g p)) => Semigroup ((f :*: g) p)	Since: base-4.12.0.0
Instance details Defined in GHC.Generics Methods (<>) :: (f :: g) p -> (f :: g) p -> (f :: g) p # sconcat :: NonEmpty ((f :: g) p) -> (f :: g) p # stimes :: Integral b => b -> (f :: g) p -> (f :*: g) p #
(Semigroup a, Semigroup b, Semigroup c, Semigroup d) => Semigroup (a, b, c, d)	Since: base-4.9.0.0
Instance details Defined in GHC.Base Methods (<>) :: (a, b, c, d) -> (a, b, c, d) -> (a, b, c, d) # sconcat :: NonEmpty (a, b, c, d) -> (a, b, c, d) # stimes :: Integral b0 => b0 -> (a, b, c, d) -> (a, b, c, d) #
Monad m => Semigroup (ConduitT i o m ())
Instance details Defined in Data.Conduit.Internal.Conduit Methods (<>) :: ConduitT i o m () -> ConduitT i o m () -> ConduitT i o m () # sconcat :: NonEmpty (ConduitT i o m ()) -> ConduitT i o m () # stimes :: Integral b => b -> ConduitT i o m () -> ConduitT i o m () #
(Stream s, Semigroup a) => Semigroup (ParsecT e s m a)	Since: megaparsec-5.3.0
Instance details Defined in Text.Megaparsec.Internal Methods (<>) :: ParsecT e s m a -> ParsecT e s m a -> ParsecT e s m a # sconcat :: NonEmpty (ParsecT e s m a) -> ParsecT e s m a # stimes :: Integral b => b -> ParsecT e s m a -> ParsecT e s m a #
Semigroup (f p) => Semigroup (M1 i c f p)	Since: base-4.12.0.0
Instance details Defined in GHC.Generics Methods (<>) :: M1 i c f p -> M1 i c f p -> M1 i c f p # sconcat :: NonEmpty (M1 i c f p) -> M1 i c f p # stimes :: Integral b => b -> M1 i c f p -> M1 i c f p #
Semigroup (f (g p)) => Semigroup ((f :.: g) p)	Since: base-4.12.0.0
Instance details Defined in GHC.Generics Methods (<>) :: (f :.: g) p -> (f :.: g) p -> (f :.: g) p # sconcat :: NonEmpty ((f :.: g) p) -> (f :.: g) p # stimes :: Integral b => b -> (f :.: g) p -> (f :.: g) p #
(Semigroup a, Semigroup b, Semigroup c, Semigroup d, Semigroup e) => Semigroup (a, b, c, d, e)	Since: base-4.9.0.0
Instance details Defined in GHC.Base Methods (<>) :: (a, b, c, d, e) -> (a, b, c, d, e) -> (a, b, c, d, e) # sconcat :: NonEmpty (a, b, c, d, e) -> (a, b, c, d, e) # stimes :: Integral b0 => b0 -> (a, b, c, d, e) -> (a, b, c, d, e) #
Monad m => Semigroup (Pipe l i o u m ())
Instance details Defined in Data.Conduit.Internal.Pipe Methods (<>) :: Pipe l i o u m () -> Pipe l i o u m () -> Pipe l i o u m () # sconcat :: NonEmpty (Pipe l i o u m ()) -> Pipe l i o u m () # stimes :: Integral b => b -> Pipe l i o u m () -> Pipe l i o u m () #

class Semigroup a => Monoid a where #

The class of monoids (types with an associative binary operation that has an identity). Instances should satisfy the following:

Right identity: x <> mempty = x
Left identity: mempty <> x = x
Associativity: x <> (y <> z) = (x <> y) <> z (Semigroup law)
Concatenation: mconcat = foldr (<>) mempty

The method names refer to the monoid of lists under concatenation, but there are many other instances.

Some types can be viewed as a monoid in more than one way, e.g. both addition and multiplication on numbers. In such cases we often define newtypes and make those instances of Monoid, e.g. Sum and Product.

NOTE: Semigroup is a superclass of Monoid since base-4.11.0.0.

Minimal complete definition

mempty

Methods

mempty :: a #

Identity of mappend

>>> "Hello world" <> mempty
"Hello world"

mappend :: a -> a -> a #

An associative operation

NOTE: This method is redundant and has the default implementation mappend = (<>) since base-4.11.0.0. Should it be implemented manually, since mappend is a synonym for (<>), it is expected that the two functions are defined the same way. In a future GHC release mappend will be removed from Monoid.

mconcat :: [a] -> a #

Fold a list using the monoid.

For most types, the default definition for mconcat will be used, but the function is included in the class definition so that an optimized version can be provided for specific types.

>>> mconcat ["Hello", " ", "Haskell", "!"]
"Hello Haskell!"

Instances

Instances details

Monoid Ordering	Since: base-2.1
Instance details Defined in GHC.Base Methods mempty :: Ordering # mappend :: Ordering -> Ordering -> Ordering # mconcat :: [Ordering] -> Ordering #
Monoid ()	Since: base-2.1
Instance details Defined in GHC.Base Methods mempty :: () # mappend :: () -> () -> () # mconcat :: [()] -> () #
Monoid ByteString
Instance details Defined in Data.ByteString.Internal Methods mempty :: ByteString # mappend :: ByteString -> ByteString -> ByteString # mconcat :: [ByteString] -> ByteString #
Monoid ByteString
Instance details Defined in Data.ByteString.Lazy.Internal Methods mempty :: ByteString # mappend :: ByteString -> ByteString -> ByteString # mconcat :: [ByteString] -> ByteString #
Monoid Builder
Instance details Defined in Data.Text.Internal.Builder Methods mempty :: Builder # mappend :: Builder -> Builder -> Builder # mconcat :: [Builder] -> Builder #
Monoid Builder
Instance details Defined in Data.ByteString.Builder.Internal Methods mempty :: Builder # mappend :: Builder -> Builder -> Builder # mconcat :: [Builder] -> Builder #
Monoid Series
Instance details Defined in Data.Aeson.Encoding.Internal Methods mempty :: Series # mappend :: Series -> Series -> Series # mconcat :: [Series] -> Series #
Monoid More
Instance details Defined in Data.Attoparsec.Internal.Types Methods mempty :: More # mappend :: More -> More -> More # mconcat :: [More] -> More #
Monoid All	Since: base-2.1
Instance details Defined in Data.Semigroup.Internal Methods mempty :: All # mappend :: All -> All -> All # mconcat :: [All] -> All #
Monoid Any	Since: base-2.1
Instance details Defined in Data.Semigroup.Internal Methods mempty :: Any # mappend :: Any -> Any -> Any # mconcat :: [Any] -> Any #
Monoid ShortText
Instance details Defined in Data.Text.Short.Internal Methods mempty :: ShortText # mappend :: ShortText -> ShortText -> ShortText # mconcat :: [ShortText] -> ShortText #
Monoid String
Instance details Defined in Basement.UTF8.Base Methods mempty :: String # mappend :: String -> String -> String # mconcat :: [String] -> String #
Monoid AttributeValue
Instance details Defined in Text.Blaze.Internal Methods mempty :: AttributeValue # mappend :: AttributeValue -> AttributeValue -> AttributeValue # mconcat :: [AttributeValue] -> AttributeValue #
Monoid Attribute
Instance details Defined in Text.Blaze.Internal Methods mempty :: Attribute # mappend :: Attribute -> Attribute -> Attribute # mconcat :: [Attribute] -> Attribute #
Monoid ChoiceString
Instance details Defined in Text.Blaze.Internal Methods mempty :: ChoiceString # mappend :: ChoiceString -> ChoiceString -> ChoiceString # mconcat :: [ChoiceString] -> ChoiceString #
Monoid IntSet
Instance details Defined in Data.IntSet.Internal Methods mempty :: IntSet # mappend :: IntSet -> IntSet -> IntSet # mconcat :: [IntSet] -> IntSet #
Monoid LogStr
Instance details Defined in System.Log.FastLogger.LogStr Methods mempty :: LogStr # mappend :: LogStr -> LogStr -> LogStr # mconcat :: [LogStr] -> LogStr #
Monoid WideBuilder
Instance details Defined in Text.WideString Methods mempty :: WideBuilder # mappend :: WideBuilder -> WideBuilder -> WideBuilder # mconcat :: [WideBuilder] -> WideBuilder #
Monoid Summary
Instance details Defined in Test.Hspec.Core.Runner Methods mempty :: Summary # mappend :: Summary -> Summary -> Summary # mconcat :: [Summary] -> Summary #
Monoid CookieJar	Since 1.9
Instance details Defined in Network.HTTP.Client.Types Methods mempty :: CookieJar # mappend :: CookieJar -> CookieJar -> CookieJar # mconcat :: [CookieJar] -> CookieJar #
Monoid RequestBody
Instance details Defined in Network.HTTP.Client.Types Methods mempty :: RequestBody # mappend :: RequestBody -> RequestBody -> RequestBody # mconcat :: [RequestBody] -> RequestBody #
Monoid MsgFlag
Instance details Defined in Network.Socket.Flag Methods mempty :: MsgFlag # mappend :: MsgFlag -> MsgFlag -> MsgFlag # mconcat :: [MsgFlag] -> MsgFlag #
Monoid Doc
Instance details Defined in Text.PrettyPrint.HughesPJ Methods mempty :: Doc # mappend :: Doc -> Doc -> Doc # mconcat :: [Doc] -> Doc #
Monoid AnsiStyle	`mempty` does nothing, which is equivalent to inheriting the style of the surrounding doc, or the terminal’s default if no style has been set yet.
Instance details Defined in Prettyprinter.Render.Terminal.Internal Methods mempty :: AnsiStyle # mappend :: AnsiStyle -> AnsiStyle -> AnsiStyle # mconcat :: [AnsiStyle] -> AnsiStyle #
Monoid ByteArray
Instance details Defined in Data.Primitive.ByteArray Methods mempty :: ByteArray # mappend :: ByteArray -> ByteArray -> ByteArray # mconcat :: [ByteArray] -> ByteArray #
Monoid Mixin
Instance details Defined in Text.Internal.Css Methods mempty :: Mixin # mappend :: Mixin -> Mixin -> Mixin # mconcat :: [Mixin] -> Mixin #
Monoid Javascript
Instance details Defined in Text.Julius Methods mempty :: Javascript # mappend :: Javascript -> Javascript -> Javascript # mconcat :: [Javascript] -> Javascript #
Monoid CalendarDiffTime	Additive
Instance details Defined in Data.Time.LocalTime.Internal.CalendarDiffTime Methods mempty :: CalendarDiffTime # mappend :: CalendarDiffTime -> CalendarDiffTime -> CalendarDiffTime # mconcat :: [CalendarDiffTime] -> CalendarDiffTime #
Monoid CalendarDiffDays	Additive
Instance details Defined in Data.Time.Calendar.CalendarDiffDays Methods mempty :: CalendarDiffDays # mappend :: CalendarDiffDays -> CalendarDiffDays -> CalendarDiffDays # mconcat :: [CalendarDiffDays] -> CalendarDiffDays #
Monoid Enctype
Instance details Defined in Yesod.Form.Types Methods mempty :: Enctype # mappend :: Enctype -> Enctype -> Enctype # mconcat :: [Enctype] -> Enctype #
Monoid LiteApp
Instance details Defined in Yesod.Core.Internal.LiteApp Methods mempty :: LiteApp # mappend :: LiteApp -> LiteApp -> LiteApp # mconcat :: [LiteApp] -> LiteApp #
Monoid DigitGrp
Instance details Defined in Hledger.Read.Common Methods mempty :: DigitGrp # mappend :: DigitGrp -> DigitGrp -> DigitGrp # mconcat :: [DigitGrp] -> DigitGrp #
Monoid [a]	Since: base-2.1
Instance details Defined in GHC.Base Methods mempty :: [a] # mappend :: [a] -> [a] -> [a] # mconcat :: [[a]] -> [a] #
Semigroup a => Monoid (Maybe a)	Lift a semigroup into `Maybe` forming a `Monoid` according to http://en.wikipedia.org/wiki/Monoid: "Any semigroup `S` may be turned into a monoid simply by adjoining an element `e` not in `S` and defining `ee = e` and `es = s = se` for all `s ∈ S`." Since 4.11.0: constraint on inner `a` value generalised from `Monoid` to `Semigroup`. Since: base-2.1*
Instance details Defined in GHC.Base Methods mempty :: Maybe a # mappend :: Maybe a -> Maybe a -> Maybe a # mconcat :: [Maybe a] -> Maybe a #
Monoid a => Monoid (IO a)	Since: base-4.9.0.0
Instance details Defined in GHC.Base Methods mempty :: IO a # mappend :: IO a -> IO a -> IO a # mconcat :: [IO a] -> IO a #
Monoid p => Monoid (Par1 p)	Since: base-4.12.0.0
Instance details Defined in GHC.Generics Methods mempty :: Par1 p # mappend :: Par1 p -> Par1 p -> Par1 p # mconcat :: [Par1 p] -> Par1 p #
Monoid (IResult a)
Instance details Defined in Data.Aeson.Types.Internal Methods mempty :: IResult a # mappend :: IResult a -> IResult a -> IResult a # mconcat :: [IResult a] -> IResult a #
Monoid (Result a)
Instance details Defined in Data.Aeson.Types.Internal Methods mempty :: Result a # mappend :: Result a -> Result a -> Result a # mconcat :: [Result a] -> Result a #
Monoid (Parser a)
Instance details Defined in Data.Aeson.Types.Internal Methods mempty :: Parser a # mappend :: Parser a -> Parser a -> Parser a # mconcat :: [Parser a] -> Parser a #
(Ord a, Bounded a) => Monoid (Min a)	Since: base-4.9.0.0
Instance details Defined in Data.Semigroup Methods mempty :: Min a # mappend :: Min a -> Min a -> Min a # mconcat :: [Min a] -> Min a #
(Ord a, Bounded a) => Monoid (Max a)	Since: base-4.9.0.0
Instance details Defined in Data.Semigroup Methods mempty :: Max a # mappend :: Max a -> Max a -> Max a # mconcat :: [Max a] -> Max a #
Monoid m => Monoid (WrappedMonoid m)	Since: base-4.9.0.0
Instance details Defined in Data.Semigroup Methods mempty :: WrappedMonoid m # mappend :: WrappedMonoid m -> WrappedMonoid m -> WrappedMonoid m # mconcat :: [WrappedMonoid m] -> WrappedMonoid m #
Semigroup a => Monoid (Option a)	Since: base-4.9.0.0
Instance details Defined in Data.Semigroup Methods mempty :: Option a # mappend :: Option a -> Option a -> Option a # mconcat :: [Option a] -> Option a #
Monoid a => Monoid (Identity a)	Since: base-4.9.0.0
Instance details Defined in Data.Functor.Identity Methods mempty :: Identity a # mappend :: Identity a -> Identity a -> Identity a # mconcat :: [Identity a] -> Identity a #
Monoid (First a)	Since: base-2.1
Instance details Defined in Data.Monoid Methods mempty :: First a # mappend :: First a -> First a -> First a # mconcat :: [First a] -> First a #
Monoid (Last a)	Since: base-2.1
Instance details Defined in Data.Monoid Methods mempty :: Last a # mappend :: Last a -> Last a -> Last a # mconcat :: [Last a] -> Last a #
Monoid a => Monoid (Dual a)	Since: base-2.1
Instance details Defined in Data.Semigroup.Internal Methods mempty :: Dual a # mappend :: Dual a -> Dual a -> Dual a # mconcat :: [Dual a] -> Dual a #
Monoid (Endo a)	Since: base-2.1
Instance details Defined in Data.Semigroup.Internal Methods mempty :: Endo a # mappend :: Endo a -> Endo a -> Endo a # mconcat :: [Endo a] -> Endo a #
Num a => Monoid (Sum a)	Since: base-2.1
Instance details Defined in Data.Semigroup.Internal Methods mempty :: Sum a # mappend :: Sum a -> Sum a -> Sum a # mconcat :: [Sum a] -> Sum a #
Num a => Monoid (Product a)	Since: base-2.1
Instance details Defined in Data.Semigroup.Internal Methods mempty :: Product a # mappend :: Product a -> Product a -> Product a # mconcat :: [Product a] -> Product a #
Monoid a => Monoid (Down a)	Since: base-4.11.0.0
Instance details Defined in Data.Ord Methods mempty :: Down a # mappend :: Down a -> Down a -> Down a # mconcat :: [Down a] -> Down a #
PrimType ty => Monoid (UArray ty)
Instance details Defined in Basement.UArray.Base Methods mempty :: UArray ty # mappend :: UArray ty -> UArray ty -> UArray ty # mconcat :: [UArray ty] -> UArray ty #
PrimType ty => Monoid (Block ty)
Instance details Defined in Basement.Block.Base Methods mempty :: Block ty # mappend :: Block ty -> Block ty -> Block ty # mconcat :: [Block ty] -> Block ty #
Monoid (CountOf ty)
Instance details Defined in Basement.Types.OffsetSize Methods mempty :: CountOf ty # mappend :: CountOf ty -> CountOf ty -> CountOf ty # mconcat :: [CountOf ty] -> CountOf ty #
Monoid a => Monoid (MarkupM a)
Instance details Defined in Text.Blaze.Internal Methods mempty :: MarkupM a # mappend :: MarkupM a -> MarkupM a -> MarkupM a # mconcat :: [MarkupM a] -> MarkupM a #
Monoid s => Monoid (CI s)
Instance details Defined in Data.CaseInsensitive.Internal Methods mempty :: CI s # mappend :: CI s -> CI s -> CI s # mconcat :: [CI s] -> CI s #
Monoid (Group a)
Instance details Defined in System.Console.CmdArgs.Explicit.Type Methods mempty :: Group a # mappend :: Group a -> Group a -> Group a # mconcat :: [Group a] -> Group a #
Monoid (IntMap a)
Instance details Defined in Data.IntMap.Internal Methods mempty :: IntMap a # mappend :: IntMap a -> IntMap a -> IntMap a # mconcat :: [IntMap a] -> IntMap a #
Monoid (Seq a)
Instance details Defined in Data.Sequence.Internal Methods mempty :: Seq a # mappend :: Seq a -> Seq a -> Seq a # mconcat :: [Seq a] -> Seq a #
Ord a => Monoid (Set a)
Instance details Defined in Data.Set.Internal Methods mempty :: Set a # mappend :: Set a -> Set a -> Set a # mconcat :: [Set a] -> Set a #
Monoid (DList a)
Instance details Defined in Data.DList.Internal Methods mempty :: DList a # mappend :: DList a -> DList a -> DList a # mconcat :: [DList a] -> DList a #
Monoid (Doc a)
Instance details Defined in Text.DocLayout Methods mempty :: Doc a # mappend :: Doc a -> Doc a -> Doc a # mconcat :: [Doc a] -> Doc a #
Monoid (FinalParseError' e)
Instance details Defined in Text.Megaparsec.Custom Methods mempty :: FinalParseError' e # mappend :: FinalParseError' e -> FinalParseError' e -> FinalParseError' e # mconcat :: [FinalParseError' e] -> FinalParseError' e #
Monoid (Hints t)
Instance details Defined in Text.Megaparsec.Internal Methods mempty :: Hints t # mappend :: Hints t -> Hints t -> Hints t # mconcat :: [Hints t] -> Hints t #
Monoid (Doc a)
Instance details Defined in Text.PrettyPrint.Annotated.HughesPJ Methods mempty :: Doc a # mappend :: Doc a -> Doc a -> Doc a # mconcat :: [Doc a] -> Doc a #
Monoid (Doc ann)	`mempty` = `emptyDoc` `mconcat` = `hcat` `>>>` `mappend "hello" "world" :: Doc ann`helloworld
Instance details Defined in Prettyprinter.Internal Methods mempty :: Doc ann # mappend :: Doc ann -> Doc ann -> Doc ann # mconcat :: [Doc ann] -> Doc ann #
Monoid (PrimArray a)	Since: primitive-0.6.4.0
Instance details Defined in Data.Primitive.PrimArray Methods mempty :: PrimArray a # mappend :: PrimArray a -> PrimArray a -> PrimArray a # mconcat :: [PrimArray a] -> PrimArray a #
Monoid (SmallArray a)
Instance details Defined in Data.Primitive.SmallArray Methods mempty :: SmallArray a # mappend :: SmallArray a -> SmallArray a -> SmallArray a # mconcat :: [SmallArray a] -> SmallArray a #
Monoid (Array a)
Instance details Defined in Data.Primitive.Array Methods mempty :: Array a # mappend :: Array a -> Array a -> Array a # mconcat :: [Array a] -> Array a #
Semigroup a => Monoid (Maybe a)
Instance details Defined in Data.Strict.Maybe Methods mempty :: Maybe a # mappend :: Maybe a -> Maybe a -> Maybe a # mconcat :: [Maybe a] -> Maybe a #
(Hashable a, Eq a) => Monoid (HashSet a)	`mempty` = `empty` `mappend` = `union` O(n+m) To obtain good performance, the smaller set must be presented as the first argument. Examples Expand `>>>` `mappend (fromList [1,2]) (fromList [2,3])`fromList [1,2,3]
Instance details Defined in Data.HashSet.Internal Methods mempty :: HashSet a # mappend :: HashSet a -> HashSet a -> HashSet a # mconcat :: [HashSet a] -> HashSet a #
Monoid (Vault s)
Instance details Defined in Data.Vault.ST.Lazy Methods mempty :: Vault s # mappend :: Vault s -> Vault s -> Vault s # mconcat :: [Vault s] -> Vault s #
Storable a => Monoid (Vector a)
Instance details Defined in Data.Vector.Storable Methods mempty :: Vector a # mappend :: Vector a -> Vector a -> Vector a # mconcat :: [Vector a] -> Vector a #
Prim a => Monoid (Vector a)
Instance details Defined in Data.Vector.Primitive Methods mempty :: Vector a # mappend :: Vector a -> Vector a -> Vector a # mconcat :: [Vector a] -> Vector a #
Monoid (Vector a)
Instance details Defined in Data.Vector Methods mempty :: Vector a # mappend :: Vector a -> Vector a -> Vector a # mconcat :: [Vector a] -> Vector a #
Monoid m => Monoid (FormResult m)
Instance details Defined in Yesod.Form.Types Methods mempty :: FormResult m # mappend :: FormResult m -> FormResult m -> FormResult m # mconcat :: [FormResult m] -> FormResult m #
Monoid (UniqueList x)
Instance details Defined in Yesod.Core.Types Methods mempty :: UniqueList x # mappend :: UniqueList x -> UniqueList x -> UniqueList x # mconcat :: [UniqueList x] -> UniqueList x #
Monoid (Head url)
Instance details Defined in Yesod.Core.Types Methods mempty :: Head url # mappend :: Head url -> Head url -> Head url # mconcat :: [Head url] -> Head url #
Monoid (Body url)
Instance details Defined in Yesod.Core.Types Methods mempty :: Body url # mappend :: Body url -> Body url -> Body url # mconcat :: [Body url] -> Body url #
Monoid (GWData a)
Instance details Defined in Yesod.Core.Types Methods mempty :: GWData a # mappend :: GWData a -> GWData a -> GWData a # mconcat :: [GWData a] -> GWData a #
Monoid (MergeSet a)
Instance details Defined in Data.Set.Internal Methods mempty :: MergeSet a # mappend :: MergeSet a -> MergeSet a -> MergeSet a # mconcat :: [MergeSet a] -> MergeSet a #
Monoid b => Monoid (a -> b)	Since: base-2.1
Instance details Defined in GHC.Base Methods mempty :: a -> b # mappend :: (a -> b) -> (a -> b) -> a -> b # mconcat :: [a -> b] -> a -> b #
Monoid (U1 p)	Since: base-4.12.0.0
Instance details Defined in GHC.Generics Methods mempty :: U1 p # mappend :: U1 p -> U1 p -> U1 p # mconcat :: [U1 p] -> U1 p #
(Monoid a, Monoid b) => Monoid (a, b)	Since: base-2.1
Instance details Defined in GHC.Base Methods mempty :: (a, b) # mappend :: (a, b) -> (a, b) -> (a, b) # mconcat :: [(a, b)] -> (a, b) #
Monoid a => Monoid (ST s a)	Since: base-4.11.0.0
Instance details Defined in GHC.ST Methods mempty :: ST s a # mappend :: ST s a -> ST s a -> ST s a # mconcat :: [ST s a] -> ST s a #
(Eq k, Hashable k) => Monoid (HashMap k v)	`mempty` = `empty` `mappend` = `union` If a key occurs in both maps, the mapping from the first will be the mapping in the result. Examples Expand `>>>` `mappend (fromList [(1,'a'),(2,'b')]) (fromList [(2,'c'),(3,'d')])`fromList [(1,'a'),(2,'b'),(3,'d')]
Instance details Defined in Data.HashMap.Internal Methods mempty :: HashMap k v # mappend :: HashMap k v -> HashMap k v -> HashMap k v # mconcat :: [HashMap k v] -> HashMap k v #
Ord k => Monoid (Map k v)
Instance details Defined in Data.Map.Internal Methods mempty :: Map k v # mappend :: Map k v -> Map k v -> Map k v # mconcat :: [Map k v] -> Map k v #
Monoid (Parser i a)
Instance details Defined in Data.Attoparsec.Internal.Types Methods mempty :: Parser i a # mappend :: Parser i a -> Parser i a -> Parser i a # mconcat :: [Parser i a] -> Parser i a #
Monoid (Proxy s)	Since: base-4.7.0.0
Instance details Defined in Data.Proxy Methods mempty :: Proxy s # mappend :: Proxy s -> Proxy s -> Proxy s # mconcat :: [Proxy s] -> Proxy s #
(Stream s, Ord e) => Monoid (ParseError s e)
Instance details Defined in Text.Megaparsec.Error Methods mempty :: ParseError s e # mappend :: ParseError s e -> ParseError s e -> ParseError s e # mconcat :: [ParseError s e] -> ParseError s e #
(Monoid a, Monoid b) => Monoid (Pair a b)
Instance details Defined in Data.Strict.Tuple Methods mempty :: Pair a b # mappend :: Pair a b -> Pair a b -> Pair a b # mconcat :: [Pair a b] -> Pair a b #
(Semigroup a, Monoid a, MonadUnliftIO m) => Monoid (Concurrently m a)	Since: unliftio-0.1.0.0
Instance details Defined in UnliftIO.Internals.Async Methods mempty :: Concurrently m a # mappend :: Concurrently m a -> Concurrently m a -> Concurrently m a # mconcat :: [Concurrently m a] -> Concurrently m a #
(Monoid a, MonadUnliftIO m) => Monoid (Conc m a)	Since: unliftio-0.2.9.0
Instance details Defined in UnliftIO.Internals.Async Methods mempty :: Conc m a # mappend :: Conc m a -> Conc m a -> Conc m a # mconcat :: [Conc m a] -> Conc m a #
(Monad m, Monoid a) => Monoid (AForm m a)
Instance details Defined in Yesod.Form.Types Methods mempty :: AForm m a # mappend :: AForm m a -> AForm m a -> AForm m a # mconcat :: [AForm m a] -> AForm m a #
a ~ () => Monoid (WidgetFor site a)
Instance details Defined in Yesod.Core.Types Methods mempty :: WidgetFor site a # mappend :: WidgetFor site a -> WidgetFor site a -> WidgetFor site a # mconcat :: [WidgetFor site a] -> WidgetFor site a #
Monoid (f p) => Monoid (Rec1 f p)	Since: base-4.12.0.0
Instance details Defined in GHC.Generics Methods mempty :: Rec1 f p # mappend :: Rec1 f p -> Rec1 f p -> Rec1 f p # mconcat :: [Rec1 f p] -> Rec1 f p #
(Monoid a, Monoid b, Monoid c) => Monoid (a, b, c)	Since: base-2.1
Instance details Defined in GHC.Base Methods mempty :: (a, b, c) # mappend :: (a, b, c) -> (a, b, c) -> (a, b, c) # mconcat :: [(a, b, c)] -> (a, b, c) #
Monoid a => Monoid (Const a b)	Since: base-4.9.0.0
Instance details Defined in Data.Functor.Const Methods mempty :: Const a b # mappend :: Const a b -> Const a b -> Const a b # mconcat :: [Const a b] -> Const a b #
(Applicative f, Monoid a) => Monoid (Ap f a)	Since: base-4.12.0.0
Instance details Defined in Data.Monoid Methods mempty :: Ap f a # mappend :: Ap f a -> Ap f a -> Ap f a # mconcat :: [Ap f a] -> Ap f a #
Alternative f => Monoid (Alt f a)	Since: base-4.8.0.0
Instance details Defined in Data.Semigroup.Internal Methods mempty :: Alt f a # mappend :: Alt f a -> Alt f a -> Alt f a # mconcat :: [Alt f a] -> Alt f a #
(Semigroup a, Monoid a) => Monoid (Tagged s a)
Instance details Defined in Data.Tagged Methods mempty :: Tagged s a # mappend :: Tagged s a -> Tagged s a -> Tagged s a # mconcat :: [Tagged s a] -> Tagged s a #
Monoid c => Monoid (K1 i c p)	Since: base-4.12.0.0
Instance details Defined in GHC.Generics Methods mempty :: K1 i c p # mappend :: K1 i c p -> K1 i c p -> K1 i c p # mconcat :: [K1 i c p] -> K1 i c p #
(Monoid (f p), Monoid (g p)) => Monoid ((f :*: g) p)	Since: base-4.12.0.0
Instance details Defined in GHC.Generics Methods mempty :: (f :: g) p # mappend :: (f :: g) p -> (f :: g) p -> (f :: g) p # mconcat :: [(f :: g) p] -> (f :: g) p #
(Monoid a, Monoid b, Monoid c, Monoid d) => Monoid (a, b, c, d)	Since: base-2.1
Instance details Defined in GHC.Base Methods mempty :: (a, b, c, d) # mappend :: (a, b, c, d) -> (a, b, c, d) -> (a, b, c, d) # mconcat :: [(a, b, c, d)] -> (a, b, c, d) #
Monad m => Monoid (ConduitT i o m ())
Instance details Defined in Data.Conduit.Internal.Conduit Methods mempty :: ConduitT i o m () # mappend :: ConduitT i o m () -> ConduitT i o m () -> ConduitT i o m () # mconcat :: [ConduitT i o m ()] -> ConduitT i o m () #
(Stream s, Monoid a) => Monoid (ParsecT e s m a)	Since: megaparsec-5.3.0
Instance details Defined in Text.Megaparsec.Internal Methods mempty :: ParsecT e s m a # mappend :: ParsecT e s m a -> ParsecT e s m a -> ParsecT e s m a # mconcat :: [ParsecT e s m a] -> ParsecT e s m a #
Monoid (f p) => Monoid (M1 i c f p)	Since: base-4.12.0.0
Instance details Defined in GHC.Generics Methods mempty :: M1 i c f p # mappend :: M1 i c f p -> M1 i c f p -> M1 i c f p # mconcat :: [M1 i c f p] -> M1 i c f p #
Monoid (f (g p)) => Monoid ((f :.: g) p)	Since: base-4.12.0.0
Instance details Defined in GHC.Generics Methods mempty :: (f :.: g) p # mappend :: (f :.: g) p -> (f :.: g) p -> (f :.: g) p # mconcat :: [(f :.: g) p] -> (f :.: g) p #
(Monoid a, Monoid b, Monoid c, Monoid d, Monoid e) => Monoid (a, b, c, d, e)	Since: base-2.1
Instance details Defined in GHC.Base Methods mempty :: (a, b, c, d, e) # mappend :: (a, b, c, d, e) -> (a, b, c, d, e) -> (a, b, c, d, e) # mconcat :: [(a, b, c, d, e)] -> (a, b, c, d, e) #
Monad m => Monoid (Pipe l i o u m ())
Instance details Defined in Data.Conduit.Internal.Pipe Methods mempty :: Pipe l i o u m () # mappend :: Pipe l i o u m () -> Pipe l i o u m () -> Pipe l i o u m () # mconcat :: [Pipe l i o u m ()] -> Pipe l i o u m () #

data Bool #

Constructors

False
True

Instances

Instances details

Bounded Bool	Since: base-2.1
Instance details Defined in GHC.Enum Methods minBound :: Bool # maxBound :: Bool #
Enum Bool	Since: base-2.1
Instance details Defined in GHC.Enum Methods succ :: Bool -> Bool # pred :: Bool -> Bool # toEnum :: Int -> Bool # fromEnum :: Bool -> Int # enumFrom :: Bool -> [Bool] # enumFromThen :: Bool -> Bool -> [Bool] # enumFromTo :: Bool -> Bool -> [Bool] # enumFromThenTo :: Bool -> Bool -> Bool -> [Bool] #
Eq Bool
Instance details Defined in GHC.Classes Methods (==) :: Bool -> Bool -> Bool # (/=) :: Bool -> Bool -> Bool #
Ord Bool
Instance details Defined in GHC.Classes Methods compare :: Bool -> Bool -> Ordering # (<) :: Bool -> Bool -> Bool # (<=) :: Bool -> Bool -> Bool # (>) :: Bool -> Bool -> Bool # (>=) :: Bool -> Bool -> Bool # max :: Bool -> Bool -> Bool # min :: Bool -> Bool -> Bool #
Read Bool	Since: base-2.1
Instance details Defined in GHC.Read Methods readsPrec :: Int -> ReadS Bool # readList :: ReadS [Bool] # readPrec :: ReadPrec Bool # readListPrec :: ReadPrec [Bool] #
Show Bool	Since: base-2.1
Instance details Defined in GHC.Show Methods showsPrec :: Int -> Bool -> ShowS # show :: Bool -> String # showList :: [Bool] -> ShowS #
Generic Bool	Since: base-4.6.0.0
Instance details Defined in GHC.Generics Associated Types type Rep Bool :: Type -> Type # Methods from :: Bool -> Rep Bool x # to :: Rep Bool x -> Bool #
Hashable Bool
Instance details Defined in Data.Hashable.Class Methods hashWithSalt :: Int -> Bool -> Int # hash :: Bool -> Int #
ToJSON Bool
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: Bool -> Value # toEncoding :: Bool -> Encoding # toJSONList :: [Bool] -> Value # toEncodingList :: [Bool] -> Encoding #
ToJSONKey Bool
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSONKey :: ToJSONKeyFunction Bool # toJSONKeyList :: ToJSONKeyFunction [Bool] #
FromJSON Bool
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser Bool # parseJSONList :: Value -> Parser [Bool] #
FromJSONKey Bool
Instance details Defined in Data.Aeson.Types.FromJSON Methods fromJSONKey :: FromJSONKeyFunction Bool # fromJSONKeyList :: FromJSONKeyFunction [Bool] #
Storable Bool	Since: base-2.1
Instance details Defined in Foreign.Storable Methods sizeOf :: Bool -> Int # alignment :: Bool -> Int # peekElemOff :: Ptr Bool -> Int -> IO Bool # pokeElemOff :: Ptr Bool -> Int -> Bool -> IO () # peekByteOff :: Ptr b -> Int -> IO Bool # pokeByteOff :: Ptr b -> Int -> Bool -> IO () # peek :: Ptr Bool -> IO Bool # poke :: Ptr Bool -> Bool -> IO () #
ToValue Bool
Instance details Defined in Text.Blaze Methods toValue :: Bool -> AttributeValue # preEscapedToValue :: Bool -> AttributeValue #
ToMarkup Bool
Instance details Defined in Text.Blaze Methods toMarkup :: Bool -> Markup # preEscapedToMarkup :: Bool -> Markup #
AssertionPredicable Bool
Instance details Defined in Test.Tasty.HUnit.Orig Methods assertionPredicate :: Bool -> IO Bool #
Assertable Bool
Instance details Defined in Test.Tasty.HUnit.Orig Methods assert :: Bool -> Assertion #
Example Bool
Instance details Defined in Test.Hspec.Core.Example Associated Types type Arg Bool # Methods evaluateExample :: Bool -> Params -> (ActionWith (Arg Bool) -> IO ()) -> ProgressCallback -> IO Result #
PathPiece Bool
Instance details Defined in Web.PathPieces Methods fromPathPiece :: Text -> Maybe Bool # toPathPiece :: Bool -> Text #
PersistField Bool
Instance details Defined in Database.Persist.Class.PersistField Methods toPersistValue :: Bool -> PersistValue # fromPersistValue :: PersistValue -> Either Text Bool #
Pretty Bool	`>>>` `pretty True`True
Instance details Defined in Prettyprinter.Internal Methods pretty :: Bool -> Doc ann # prettyList :: [Bool] -> Doc ann #
Uniform Bool
Instance details Defined in System.Random.Internal Methods uniformM :: StatefulGen g m => g -> m Bool #
UniformRange Bool
Instance details Defined in System.Random.Internal Methods uniformRM :: StatefulGen g m => (Bool, Bool) -> g -> m Bool #
ToJavascript Bool
Instance details Defined in Text.Julius Methods toJavascript :: Bool -> Javascript #
RawJS Bool
Instance details Defined in Text.Julius Methods rawJS :: Bool -> RawJavascript #
Unbox Bool
Instance details Defined in Data.Vector.Unboxed.Base
SingKind Bool	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Associated Types type DemoteRep Bool Methods fromSing :: forall (a :: Bool). Sing a -> DemoteRep Bool
Lift Bool
Instance details Defined in Language.Haskell.TH.Syntax Methods lift :: Bool -> Q Exp # liftTyped :: Bool -> Q (TExp Bool) #
Vector Vector Bool
Instance details Defined in Data.Vector.Unboxed.Base Methods basicUnsafeFreeze :: PrimMonad m => Mutable Vector (PrimState m) Bool -> m (Vector Bool) # basicUnsafeThaw :: PrimMonad m => Vector Bool -> m (Mutable Vector (PrimState m) Bool) # basicLength :: Vector Bool -> Int # basicUnsafeSlice :: Int -> Int -> Vector Bool -> Vector Bool # basicUnsafeIndexM :: Monad m => Vector Bool -> Int -> m Bool # basicUnsafeCopy :: PrimMonad m => Mutable Vector (PrimState m) Bool -> Vector Bool -> m () # elemseq :: Vector Bool -> Bool -> b -> b #
MVector MVector Bool
Instance details Defined in Data.Vector.Unboxed.Base Methods basicLength :: MVector s Bool -> Int # basicUnsafeSlice :: Int -> Int -> MVector s Bool -> MVector s Bool # basicOverlaps :: MVector s Bool -> MVector s Bool -> Bool # basicUnsafeNew :: PrimMonad m => Int -> m (MVector (PrimState m) Bool) # basicInitialize :: PrimMonad m => MVector (PrimState m) Bool -> m () # basicUnsafeReplicate :: PrimMonad m => Int -> Bool -> m (MVector (PrimState m) Bool) # basicUnsafeRead :: PrimMonad m => MVector (PrimState m) Bool -> Int -> m Bool # basicUnsafeWrite :: PrimMonad m => MVector (PrimState m) Bool -> Int -> Bool -> m () # basicClear :: PrimMonad m => MVector (PrimState m) Bool -> m () # basicSet :: PrimMonad m => MVector (PrimState m) Bool -> Bool -> m () # basicUnsafeCopy :: PrimMonad m => MVector (PrimState m) Bool -> MVector (PrimState m) Bool -> m () # basicUnsafeMove :: PrimMonad m => MVector (PrimState m) Bool -> MVector (PrimState m) Bool -> m () # basicUnsafeGrow :: PrimMonad m => MVector (PrimState m) Bool -> Int -> m (MVector (PrimState m) Bool) #
SingI 'False	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Methods sing :: Sing 'False
SingI 'True	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Methods sing :: Sing 'True
Example (a -> Bool)
Instance details Defined in Test.Hspec.Core.Example Associated Types type Arg (a -> Bool) # Methods evaluateExample :: (a -> Bool) -> Params -> (ActionWith (Arg (a -> Bool)) -> IO ()) -> ProgressCallback -> IO Result #
type Rep Bool
Instance details Defined in GHC.Generics type Rep Bool = D1 ('MetaData "Bool" "GHC.Types" "ghc-prim" 'False) (C1 ('MetaCons "False" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "True" 'PrefixI 'False) (U1 :: Type -> Type))
type Arg Bool
Instance details Defined in Test.Hspec.Core.Example type Arg Bool = ()
newtype Vector Bool
Instance details Defined in Data.Vector.Unboxed.Base newtype Vector Bool = V_Bool (Vector Word8)
type DemoteRep Bool
Instance details Defined in GHC.Generics type DemoteRep Bool = Bool
data Sing (a :: Bool)
Instance details Defined in GHC.Generics data Sing (a :: Bool) where STrue :: Sing 'True SFalse :: Sing 'False
newtype MVector s Bool
Instance details Defined in Data.Vector.Unboxed.Base newtype MVector s Bool = MV_Bool (MVector s Word8)
type Arg (a -> Bool)
Instance details Defined in Test.Hspec.Core.Example type Arg (a -> Bool) = a

data Char #

The character type Char is an enumeration whose values represent Unicode (or equivalently ISO/IEC 10646) code points (i.e. characters, see http://www.unicode.org/ for details). This set extends the ISO 8859-1 (Latin-1) character set (the first 256 characters), which is itself an extension of the ASCII character set (the first 128 characters). A character literal in Haskell has type Char.

To convert a Char to or from the corresponding Int value defined by Unicode, use toEnum and fromEnum from the Enum class respectively (or equivalently ord and chr).

Instances

Instances details

Bounded Char	Since: base-2.1
Instance details Defined in GHC.Enum Methods minBound :: Char # maxBound :: Char #
Enum Char	Since: base-2.1
Instance details Defined in GHC.Enum Methods succ :: Char -> Char # pred :: Char -> Char # toEnum :: Int -> Char # fromEnum :: Char -> Int # enumFrom :: Char -> [Char] # enumFromThen :: Char -> Char -> [Char] # enumFromTo :: Char -> Char -> [Char] # enumFromThenTo :: Char -> Char -> Char -> [Char] #
Eq Char
Instance details Defined in GHC.Classes Methods (==) :: Char -> Char -> Bool # (/=) :: Char -> Char -> Bool #
Ord Char
Instance details Defined in GHC.Classes Methods compare :: Char -> Char -> Ordering # (<) :: Char -> Char -> Bool # (<=) :: Char -> Char -> Bool # (>) :: Char -> Char -> Bool # (>=) :: Char -> Char -> Bool # max :: Char -> Char -> Char # min :: Char -> Char -> Char #
Read Char	Since: base-2.1
Instance details Defined in GHC.Read Methods readsPrec :: Int -> ReadS Char # readList :: ReadS [Char] # readPrec :: ReadPrec Char # readListPrec :: ReadPrec [Char] #
Show Char	Since: base-2.1
Instance details Defined in GHC.Show Methods showsPrec :: Int -> Char -> ShowS # show :: Char -> String # showList :: [Char] -> ShowS #
Hashable Char
Instance details Defined in Data.Hashable.Class Methods hashWithSalt :: Int -> Char -> Int # hash :: Char -> Int #
ToJSON Char
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: Char -> Value # toEncoding :: Char -> Encoding # toJSONList :: [Char] -> Value # toEncodingList :: [Char] -> Encoding #
ToJSONKey Char
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSONKey :: ToJSONKeyFunction Char # toJSONKeyList :: ToJSONKeyFunction [Char] #
FromJSON Char
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser Char # parseJSONList :: Value -> Parser [Char] #
FromJSONKey Char
Instance details Defined in Data.Aeson.Types.FromJSON Methods fromJSONKey :: FromJSONKeyFunction Char # fromJSONKeyList :: FromJSONKeyFunction [Char] #
PrintfArg Char	Since: base-2.1
Instance details Defined in Text.Printf Methods formatArg :: Char -> FieldFormatter # parseFormat :: Char -> ModifierParser #
IsChar Char	Since: base-2.1
Instance details Defined in Text.Printf Methods toChar :: Char -> Char # fromChar :: Char -> Char #
Storable Char	Since: base-2.1
Instance details Defined in Foreign.Storable Methods sizeOf :: Char -> Int # alignment :: Char -> Int # peekElemOff :: Ptr Char -> Int -> IO Char # pokeElemOff :: Ptr Char -> Int -> Char -> IO () # peekByteOff :: Ptr b -> Int -> IO Char # pokeByteOff :: Ptr b -> Int -> Char -> IO () # peek :: Ptr Char -> IO Char # poke :: Ptr Char -> Char -> IO () #
PrimType Char
Instance details Defined in Basement.PrimType Associated Types type PrimSize Char :: Nat # Methods primSizeInBytes :: Proxy Char -> CountOf Word8 # primShiftToBytes :: Proxy Char -> Int # primBaUIndex :: ByteArray# -> Offset Char -> Char # primMbaURead :: PrimMonad prim => MutableByteArray# (PrimState prim) -> Offset Char -> prim Char # primMbaUWrite :: PrimMonad prim => MutableByteArray# (PrimState prim) -> Offset Char -> Char -> prim () # primAddrIndex :: Addr# -> Offset Char -> Char # primAddrRead :: PrimMonad prim => Addr# -> Offset Char -> prim Char # primAddrWrite :: PrimMonad prim => Addr# -> Offset Char -> Char -> prim () #
PrimMemoryComparable Char
Instance details Defined in Basement.PrimType
Subtractive Char
Instance details Defined in Basement.Numerical.Subtractive Associated Types type Difference Char # Methods (-) :: Char -> Char -> Difference Char #
ToValue Char
Instance details Defined in Text.Blaze Methods toValue :: Char -> AttributeValue # preEscapedToValue :: Char -> AttributeValue #
ToValue String
Instance details Defined in Text.Blaze Methods toValue :: String -> AttributeValue # preEscapedToValue :: String -> AttributeValue #
ToMarkup Char
Instance details Defined in Text.Blaze Methods toMarkup :: Char -> Markup # preEscapedToMarkup :: Char -> Markup #
ToMarkup String
Instance details Defined in Text.Blaze Methods toMarkup :: String -> Markup # preEscapedToMarkup :: String -> Markup #
FoldCase Char
Instance details Defined in Data.CaseInsensitive.Internal Methods foldCase :: Char -> Char # foldCaseList :: [Char] -> [Char]
HasChars String
Instance details Defined in Text.DocLayout Methods foldrChar :: (Char -> b -> b) -> b -> String -> b # foldlChar :: (b -> Char -> b) -> b -> String -> b # replicateChar :: Int -> Char -> String # isNull :: String -> Bool # splitLines :: String -> [String] #
ToLogStr String
Instance details Defined in System.Log.FastLogger.LogStr Methods toLogStr :: String -> LogStr #
Assertable String
Instance details Defined in Test.Tasty.HUnit.Orig Methods assert :: String -> Assertion #
VisualStream String
Instance details Defined in Text.Megaparsec.Stream Methods showTokens :: Proxy String -> NonEmpty (Token String) -> String # tokensLength :: Proxy String -> NonEmpty (Token String) -> Int #
TraversableStream String
Instance details Defined in Text.Megaparsec.Stream Methods reachOffset :: Int -> PosState String -> (Maybe String, PosState String) # reachOffsetNoLine :: Int -> PosState String -> PosState String #
PathPiece String
Instance details Defined in Web.PathPieces Methods fromPathPiece :: Text -> Maybe String # toPathPiece :: String -> Text #
Pretty Char	Instead of `(pretty 'n')`, consider using `line` as a more readable alternative. `>>>` `pretty 'f' <> pretty 'o' <> pretty 'o'`foo `>>>` `pretty ("string" :: String)`string
Instance details Defined in Prettyprinter.Internal Methods pretty :: Char -> Doc ann # prettyList :: [Char] -> Doc ann #
Prim Char
Instance details Defined in Data.Primitive.Types Methods sizeOf# :: Char -> Int# # alignment# :: Char -> Int# # indexByteArray# :: ByteArray# -> Int# -> Char # readByteArray# :: MutableByteArray# s -> Int# -> State# s -> (# State# s, Char #) # writeByteArray# :: MutableByteArray# s -> Int# -> Char -> State# s -> State# s # setByteArray# :: MutableByteArray# s -> Int# -> Int# -> Char -> State# s -> State# s # indexOffAddr# :: Addr# -> Int# -> Char # readOffAddr# :: Addr# -> Int# -> State# s -> (# State# s, Char #) # writeOffAddr# :: Addr# -> Int# -> Char -> State# s -> State# s # setOffAddr# :: Addr# -> Int# -> Int# -> Char -> State# s -> State# s #
Uniform Char
Instance details Defined in System.Random.Internal Methods uniformM :: StatefulGen g m => g -> m Char #
UniformRange Char
Instance details Defined in System.Random.Internal Methods uniformRM :: StatefulGen g m => (Char, Char) -> g -> m Char #
ToMessage String
Instance details Defined in Text.Shakespeare.I18N Methods toMessage :: String -> Text #
ToJavascript String
Instance details Defined in Text.Julius Methods toJavascript :: String -> Javascript #
ErrorList Char
Instance details Defined in Control.Monad.Trans.Error Methods listMsg :: String -> [Char] #
Unbox Char
Instance details Defined in Data.Vector.Unboxed.Base
ToFlushBuilder String
Instance details Defined in Yesod.Core.Content Methods toFlushBuilder :: String -> Flush Builder #
ToContent String
Instance details Defined in Yesod.Core.Content Methods toContent :: String -> Content #
Lift Char
Instance details Defined in Language.Haskell.TH.Syntax Methods lift :: Char -> Q Exp # liftTyped :: Char -> Q (TExp Char) #
RegexLike Regexp String
Instance details Defined in Hledger.Utils.Regex Methods matchOnce :: Regexp -> String -> Maybe MatchArray # matchAll :: Regexp -> String -> [MatchArray] # matchCount :: Regexp -> String -> Int # matchTest :: Regexp -> String -> Bool # matchAllText :: Regexp -> String -> [MatchText String] # matchOnceText :: Regexp -> String -> Maybe (String, MatchText String, String) #
Vector Vector Char
Instance details Defined in Data.Vector.Unboxed.Base Methods basicUnsafeFreeze :: PrimMonad m => Mutable Vector (PrimState m) Char -> m (Vector Char) # basicUnsafeThaw :: PrimMonad m => Vector Char -> m (Mutable Vector (PrimState m) Char) # basicLength :: Vector Char -> Int # basicUnsafeSlice :: Int -> Int -> Vector Char -> Vector Char # basicUnsafeIndexM :: Monad m => Vector Char -> Int -> m Char # basicUnsafeCopy :: PrimMonad m => Mutable Vector (PrimState m) Char -> Vector Char -> m () # elemseq :: Vector Char -> Char -> b -> b #
MVector MVector Char
Instance details Defined in Data.Vector.Unboxed.Base Methods basicLength :: MVector s Char -> Int # basicUnsafeSlice :: Int -> Int -> MVector s Char -> MVector s Char # basicOverlaps :: MVector s Char -> MVector s Char -> Bool # basicUnsafeNew :: PrimMonad m => Int -> m (MVector (PrimState m) Char) # basicInitialize :: PrimMonad m => MVector (PrimState m) Char -> m () # basicUnsafeReplicate :: PrimMonad m => Int -> Char -> m (MVector (PrimState m) Char) # basicUnsafeRead :: PrimMonad m => MVector (PrimState m) Char -> Int -> m Char # basicUnsafeWrite :: PrimMonad m => MVector (PrimState m) Char -> Int -> Char -> m () # basicClear :: PrimMonad m => MVector (PrimState m) Char -> m () # basicSet :: PrimMonad m => MVector (PrimState m) Char -> Char -> m () # basicUnsafeCopy :: PrimMonad m => MVector (PrimState m) Char -> MVector (PrimState m) Char -> m () # basicUnsafeMove :: PrimMonad m => MVector (PrimState m) Char -> MVector (PrimState m) Char -> m () # basicUnsafeGrow :: PrimMonad m => MVector (PrimState m) Char -> Int -> m (MVector (PrimState m) Char) #
RedirectUrl master String
Instance details Defined in Yesod.Core.Handler Methods toTextUrl :: (MonadHandler m, HandlerSite m ~ master) => String -> m Text #
RegexContext Regexp String String
Instance details Defined in Hledger.Utils.Regex Methods match :: Regexp -> String -> String # matchM :: MonadFail m => Regexp -> String -> m String #
Generic1 (URec Char :: k -> Type)	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Associated Types type Rep1 (URec Char) :: k -> Type # Methods from1 :: forall (a :: k0). URec Char a -> Rep1 (URec Char) a # to1 :: forall (a :: k0). Rep1 (URec Char) a -> URec Char a #
Lift (String -> CloseStyle)
Instance details Defined in Text.Hamlet.Parse Methods lift :: (String -> CloseStyle) -> Q Exp # liftTyped :: (String -> CloseStyle) -> Q (TExp (String -> CloseStyle)) #
Foldable (UChar :: Type -> Type)	Since: base-4.9.0.0
Instance details Defined in Data.Foldable Methods fold :: Monoid m => UChar m -> m # foldMap :: Monoid m => (a -> m) -> UChar a -> m # foldMap' :: Monoid m => (a -> m) -> UChar a -> m # foldr :: (a -> b -> b) -> b -> UChar a -> b # foldr' :: (a -> b -> b) -> b -> UChar a -> b # foldl :: (b -> a -> b) -> b -> UChar a -> b # foldl' :: (b -> a -> b) -> b -> UChar a -> b # foldr1 :: (a -> a -> a) -> UChar a -> a # foldl1 :: (a -> a -> a) -> UChar a -> a # toList :: UChar a -> [a] # null :: UChar a -> Bool # length :: UChar a -> Int # elem :: Eq a => a -> UChar a -> Bool # maximum :: Ord a => UChar a -> a # minimum :: Ord a => UChar a -> a # sum :: Num a => UChar a -> a # product :: Num a => UChar a -> a #
Traversable (UChar :: Type -> Type)	Since: base-4.9.0.0
Instance details Defined in Data.Traversable Methods traverse :: Applicative f => (a -> f b) -> UChar a -> f (UChar b) # sequenceA :: Applicative f => UChar (f a) -> f (UChar a) # mapM :: Monad m => (a -> m b) -> UChar a -> m (UChar b) # sequence :: Monad m => UChar (m a) -> m (UChar a) #
PersistField [Char]
Instance details Defined in Database.Persist.Class.PersistField Methods toPersistValue :: [Char] -> PersistValue # fromPersistValue :: PersistValue -> Either Text [Char] #
ToText [Char]
Instance details Defined in Text.Shakespeare.Text Methods toText :: [Char] -> Builder #
ToAttributes [(String, String)]
Instance details Defined in Text.Hamlet Methods toAttributes :: [(String, String)] -> [(Text, Text)] #
ToCss [Char]
Instance details Defined in Text.Internal.Css Methods toCss :: [Char] -> Builder #
RawJS [Char]
Instance details Defined in Text.Julius Methods rawJS :: [Char] -> RawJavascript #
ToTypedContent [Char]
Instance details Defined in Yesod.Core.Content Methods toTypedContent :: [Char] -> TypedContent #
ToFlushBuilder (Flush String)
Instance details Defined in Yesod.Core.Content Methods toFlushBuilder :: Flush String -> Flush Builder #
Functor (URec Char :: Type -> Type)	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Methods fmap :: (a -> b) -> URec Char a -> URec Char b # (<$) :: a -> URec Char b -> URec Char a #
ToAttributes (String, String)
Instance details Defined in Text.Hamlet Methods toAttributes :: (String, String) -> [(Text, Text)] #
Eq (URec Char p)	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Methods (==) :: URec Char p -> URec Char p -> Bool # (/=) :: URec Char p -> URec Char p -> Bool #
Ord (URec Char p)	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Methods compare :: URec Char p -> URec Char p -> Ordering # (<) :: URec Char p -> URec Char p -> Bool # (<=) :: URec Char p -> URec Char p -> Bool # (>) :: URec Char p -> URec Char p -> Bool # (>=) :: URec Char p -> URec Char p -> Bool # max :: URec Char p -> URec Char p -> URec Char p # min :: URec Char p -> URec Char p -> URec Char p #
Show (URec Char p)	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Methods showsPrec :: Int -> URec Char p -> ShowS # show :: URec Char p -> String # showList :: [URec Char p] -> ShowS #
Generic (URec Char p)	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Associated Types type Rep (URec Char p) :: Type -> Type # Methods from :: URec Char p -> Rep (URec Char p) x # to :: Rep (URec Char p) x -> URec Char p #
type PrimSize Char
Instance details Defined in Basement.PrimType type PrimSize Char = 4
type Difference Char
Instance details Defined in Basement.Numerical.Subtractive type Difference Char = Int
type NatNumMaxBound Char
Instance details Defined in Basement.Nat type NatNumMaxBound Char = 1114111
newtype Vector Char
Instance details Defined in Data.Vector.Unboxed.Base newtype Vector Char = V_Char (Vector Char)
data URec Char (p :: k)	Used for marking occurrences of `Char#` Since: base-4.9.0.0
Instance details Defined in GHC.Generics data URec Char (p :: k) = UChar { uChar# :: Char# }
newtype MVector s Char
Instance details Defined in Data.Vector.Unboxed.Base newtype MVector s Char = MV_Char (MVector s Char)
type Rep1 (URec Char :: k -> Type)
Instance details Defined in GHC.Generics type Rep1 (URec Char :: k -> Type) = D1 ('MetaData "URec" "GHC.Generics" "base" 'False) (C1 ('MetaCons "UChar" 'PrefixI 'True) (S1 ('MetaSel ('Just "uChar#") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (UChar :: k -> Type)))
type Rep (URec Char p)
Instance details Defined in GHC.Generics type Rep (URec Char p) = D1 ('MetaData "URec" "GHC.Generics" "base" 'False) (C1 ('MetaCons "UChar" 'PrefixI 'True) (S1 ('MetaSel ('Just "uChar#") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (UChar :: Type -> Type)))

data Double #

Double-precision floating point numbers. It is desirable that this type be at least equal in range and precision to the IEEE double-precision type.

Instances

Instances details

Eq Double	Note that due to the presence of `NaN`, `Double`'s `Eq` instance does not satisfy reflexivity. `>>>` `0/0 == (0/0 :: Double)`False Also note that `Double`'s `Eq` instance does not satisfy substitutivity: `>>>` `0 == (-0 :: Double)`True `>>>` `recip 0 == recip (-0 :: Double)`False
Instance details Defined in GHC.Classes Methods (==) :: Double -> Double -> Bool # (/=) :: Double -> Double -> Bool #
Floating Double	Since: base-2.1
Instance details Defined in GHC.Float Methods pi :: Double # exp :: Double -> Double # log :: Double -> Double # sqrt :: Double -> Double # (**) :: Double -> Double -> Double # logBase :: Double -> Double -> Double # sin :: Double -> Double # cos :: Double -> Double # tan :: Double -> Double # asin :: Double -> Double # acos :: Double -> Double # atan :: Double -> Double # sinh :: Double -> Double # cosh :: Double -> Double # tanh :: Double -> Double # asinh :: Double -> Double # acosh :: Double -> Double # atanh :: Double -> Double # log1p :: Double -> Double # expm1 :: Double -> Double # log1pexp :: Double -> Double # log1mexp :: Double -> Double #
Ord Double	Note that due to the presence of `NaN`, `Double`'s `Ord` instance does not satisfy reflexivity. `>>>` `0/0 <= (0/0 :: Double)`False Also note that, due to the same, `Ord`'s operator interactions are not respected by `Double`'s instance: `>>>` `(0/0 :: Double) > 1`False `>>>` `compare (0/0 :: Double) 1`GT
Instance details Defined in GHC.Classes Methods compare :: Double -> Double -> Ordering # (<) :: Double -> Double -> Bool # (<=) :: Double -> Double -> Bool # (>) :: Double -> Double -> Bool # (>=) :: Double -> Double -> Bool # max :: Double -> Double -> Double # min :: Double -> Double -> Double #
Read Double	Since: base-2.1
Instance details Defined in GHC.Read Methods readsPrec :: Int -> ReadS Double # readList :: ReadS [Double] # readPrec :: ReadPrec Double # readListPrec :: ReadPrec [Double] #
RealFloat Double	Since: base-2.1
Instance details Defined in GHC.Float Methods floatRadix :: Double -> Integer # floatDigits :: Double -> Int # floatRange :: Double -> (Int, Int) # decodeFloat :: Double -> (Integer, Int) # encodeFloat :: Integer -> Int -> Double # exponent :: Double -> Int # significand :: Double -> Double # scaleFloat :: Int -> Double -> Double # isNaN :: Double -> Bool # isInfinite :: Double -> Bool # isDenormalized :: Double -> Bool # isNegativeZero :: Double -> Bool # isIEEE :: Double -> Bool # atan2 :: Double -> Double -> Double #
Hashable Double	Note: prior to `hashable-1.3.0.0`, `hash 0.0 /= hash (-0.0)` The `hash` of NaN is not well defined. Since: hashable-1.3.0.0
Instance details Defined in Data.Hashable.Class Methods hashWithSalt :: Int -> Double -> Int # hash :: Double -> Int #
ToJSON Double
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: Double -> Value # toEncoding :: Double -> Encoding # toJSONList :: [Double] -> Value # toEncodingList :: [Double] -> Encoding #
ToJSONKey Double
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSONKey :: ToJSONKeyFunction Double # toJSONKeyList :: ToJSONKeyFunction [Double] #
FromJSON Double
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser Double # parseJSONList :: Value -> Parser [Double] #
FromJSONKey Double
Instance details Defined in Data.Aeson.Types.FromJSON Methods fromJSONKey :: FromJSONKeyFunction Double # fromJSONKeyList :: FromJSONKeyFunction [Double] #
PrintfArg Double	Since: base-2.1
Instance details Defined in Text.Printf Methods formatArg :: Double -> FieldFormatter # parseFormat :: Double -> ModifierParser #
Storable Double	Since: base-2.1
Instance details Defined in Foreign.Storable Methods sizeOf :: Double -> Int # alignment :: Double -> Int # peekElemOff :: Ptr Double -> Int -> IO Double # pokeElemOff :: Ptr Double -> Int -> Double -> IO () # peekByteOff :: Ptr b -> Int -> IO Double # pokeByteOff :: Ptr b -> Int -> Double -> IO () # peek :: Ptr Double -> IO Double # poke :: Ptr Double -> Double -> IO () #
PrimType Double
Instance details Defined in Basement.PrimType Associated Types type PrimSize Double :: Nat # Methods primSizeInBytes :: Proxy Double -> CountOf Word8 # primShiftToBytes :: Proxy Double -> Int # primBaUIndex :: ByteArray# -> Offset Double -> Double # primMbaURead :: PrimMonad prim => MutableByteArray# (PrimState prim) -> Offset Double -> prim Double # primMbaUWrite :: PrimMonad prim => MutableByteArray# (PrimState prim) -> Offset Double -> Double -> prim () # primAddrIndex :: Addr# -> Offset Double -> Double # primAddrRead :: PrimMonad prim => Addr# -> Offset Double -> prim Double # primAddrWrite :: PrimMonad prim => Addr# -> Offset Double -> Double -> prim () #
Subtractive Double
Instance details Defined in Basement.Numerical.Subtractive Associated Types type Difference Double # Methods (-) :: Double -> Double -> Difference Double #
ToValue Double
Instance details Defined in Text.Blaze Methods toValue :: Double -> AttributeValue # preEscapedToValue :: Double -> AttributeValue #
ToMarkup Double
Instance details Defined in Text.Blaze Methods toMarkup :: Double -> Markup # preEscapedToMarkup :: Double -> Markup #
Default Double
Instance details Defined in Data.Default.Class Methods def :: Double #
ToLogStr Double	Since: fast-logger-2.4.14
Instance details Defined in System.Log.FastLogger.LogStr Methods toLogStr :: Double -> LogStr #
PersistField Double
Instance details Defined in Database.Persist.Class.PersistField Methods toPersistValue :: Double -> PersistValue # fromPersistValue :: PersistValue -> Either Text Double #
Pretty Double	`>>>` `pretty (exp 1 :: Double)`2.71828182845904...
Instance details Defined in Prettyprinter.Internal Methods pretty :: Double -> Doc ann # prettyList :: [Double] -> Doc ann #
Prim Double
Instance details Defined in Data.Primitive.Types Methods sizeOf# :: Double -> Int# # alignment# :: Double -> Int# # indexByteArray# :: ByteArray# -> Int# -> Double # readByteArray# :: MutableByteArray# s -> Int# -> State# s -> (# State# s, Double #) # writeByteArray# :: MutableByteArray# s -> Int# -> Double -> State# s -> State# s # setByteArray# :: MutableByteArray# s -> Int# -> Int# -> Double -> State# s -> State# s # indexOffAddr# :: Addr# -> Int# -> Double # readOffAddr# :: Addr# -> Int# -> State# s -> (# State# s, Double #) # writeOffAddr# :: Addr# -> Int# -> Double -> State# s -> State# s # setOffAddr# :: Addr# -> Int# -> Int# -> Double -> State# s -> State# s #
UniformRange Double	See Floating point number caveats.
Instance details Defined in System.Random.Internal Methods uniformRM :: StatefulGen g m => (Double, Double) -> g -> m Double #
Unbox Double
Instance details Defined in Data.Vector.Unboxed.Base
Lift Double
Instance details Defined in Language.Haskell.TH.Syntax Methods lift :: Double -> Q Exp # liftTyped :: Double -> Q (TExp Double) #
Vector Vector Double
Instance details Defined in Data.Vector.Unboxed.Base Methods basicUnsafeFreeze :: PrimMonad m => Mutable Vector (PrimState m) Double -> m (Vector Double) # basicUnsafeThaw :: PrimMonad m => Vector Double -> m (Mutable Vector (PrimState m) Double) # basicLength :: Vector Double -> Int # basicUnsafeSlice :: Int -> Int -> Vector Double -> Vector Double # basicUnsafeIndexM :: Monad m => Vector Double -> Int -> m Double # basicUnsafeCopy :: PrimMonad m => Mutable Vector (PrimState m) Double -> Vector Double -> m () # elemseq :: Vector Double -> Double -> b -> b #
MVector MVector Double
Instance details Defined in Data.Vector.Unboxed.Base Methods basicLength :: MVector s Double -> Int # basicUnsafeSlice :: Int -> Int -> MVector s Double -> MVector s Double # basicOverlaps :: MVector s Double -> MVector s Double -> Bool # basicUnsafeNew :: PrimMonad m => Int -> m (MVector (PrimState m) Double) # basicInitialize :: PrimMonad m => MVector (PrimState m) Double -> m () # basicUnsafeReplicate :: PrimMonad m => Int -> Double -> m (MVector (PrimState m) Double) # basicUnsafeRead :: PrimMonad m => MVector (PrimState m) Double -> Int -> m Double # basicUnsafeWrite :: PrimMonad m => MVector (PrimState m) Double -> Int -> Double -> m () # basicClear :: PrimMonad m => MVector (PrimState m) Double -> m () # basicSet :: PrimMonad m => MVector (PrimState m) Double -> Double -> m () # basicUnsafeCopy :: PrimMonad m => MVector (PrimState m) Double -> MVector (PrimState m) Double -> m () # basicUnsafeMove :: PrimMonad m => MVector (PrimState m) Double -> MVector (PrimState m) Double -> m () # basicUnsafeGrow :: PrimMonad m => MVector (PrimState m) Double -> Int -> m (MVector (PrimState m) Double) #
Generic1 (URec Double :: k -> Type)	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Associated Types type Rep1 (URec Double) :: k -> Type # Methods from1 :: forall (a :: k0). URec Double a -> Rep1 (URec Double) a # to1 :: forall (a :: k0). Rep1 (URec Double) a -> URec Double a #
Foldable (UDouble :: Type -> Type)	Since: base-4.9.0.0
Instance details Defined in Data.Foldable Methods fold :: Monoid m => UDouble m -> m # foldMap :: Monoid m => (a -> m) -> UDouble a -> m # foldMap' :: Monoid m => (a -> m) -> UDouble a -> m # foldr :: (a -> b -> b) -> b -> UDouble a -> b # foldr' :: (a -> b -> b) -> b -> UDouble a -> b # foldl :: (b -> a -> b) -> b -> UDouble a -> b # foldl' :: (b -> a -> b) -> b -> UDouble a -> b # foldr1 :: (a -> a -> a) -> UDouble a -> a # foldl1 :: (a -> a -> a) -> UDouble a -> a # toList :: UDouble a -> [a] # null :: UDouble a -> Bool # length :: UDouble a -> Int # elem :: Eq a => a -> UDouble a -> Bool # maximum :: Ord a => UDouble a -> a # minimum :: Ord a => UDouble a -> a # sum :: Num a => UDouble a -> a # product :: Num a => UDouble a -> a #
Traversable (UDouble :: Type -> Type)	Since: base-4.9.0.0
Instance details Defined in Data.Traversable Methods traverse :: Applicative f => (a -> f b) -> UDouble a -> f (UDouble b) # sequenceA :: Applicative f => UDouble (f a) -> f (UDouble a) # mapM :: Monad m => (a -> m b) -> UDouble a -> m (UDouble b) # sequence :: Monad m => UDouble (m a) -> m (UDouble a) #
Functor (URec Double :: Type -> Type)	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Methods fmap :: (a -> b) -> URec Double a -> URec Double b # (<$) :: a -> URec Double b -> URec Double a #
Eq (URec Double p)	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Methods (==) :: URec Double p -> URec Double p -> Bool # (/=) :: URec Double p -> URec Double p -> Bool #
Ord (URec Double p)	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Methods compare :: URec Double p -> URec Double p -> Ordering # (<) :: URec Double p -> URec Double p -> Bool # (<=) :: URec Double p -> URec Double p -> Bool # (>) :: URec Double p -> URec Double p -> Bool # (>=) :: URec Double p -> URec Double p -> Bool # max :: URec Double p -> URec Double p -> URec Double p # min :: URec Double p -> URec Double p -> URec Double p #
Show (URec Double p)	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Methods showsPrec :: Int -> URec Double p -> ShowS # show :: URec Double p -> String # showList :: [URec Double p] -> ShowS #
Generic (URec Double p)	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Associated Types type Rep (URec Double p) :: Type -> Type # Methods from :: URec Double p -> Rep (URec Double p) x # to :: Rep (URec Double p) x -> URec Double p #
type PrimSize Double
Instance details Defined in Basement.PrimType type PrimSize Double = 8
type Difference Double
Instance details Defined in Basement.Numerical.Subtractive type Difference Double = Double
newtype Vector Double
Instance details Defined in Data.Vector.Unboxed.Base newtype Vector Double = V_Double (Vector Double)
data URec Double (p :: k)	Used for marking occurrences of `Double#` Since: base-4.9.0.0
Instance details Defined in GHC.Generics data URec Double (p :: k) = UDouble { uDouble# :: Double# }
newtype MVector s Double
Instance details Defined in Data.Vector.Unboxed.Base newtype MVector s Double = MV_Double (MVector s Double)
type Rep1 (URec Double :: k -> Type)
Instance details Defined in GHC.Generics type Rep1 (URec Double :: k -> Type) = D1 ('MetaData "URec" "GHC.Generics" "base" 'False) (C1 ('MetaCons "UDouble" 'PrefixI 'True) (S1 ('MetaSel ('Just "uDouble#") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (UDouble :: k -> Type)))
type Rep (URec Double p)
Instance details Defined in GHC.Generics type Rep (URec Double p) = D1 ('MetaData "URec" "GHC.Generics" "base" 'False) (C1 ('MetaCons "UDouble" 'PrefixI 'True) (S1 ('MetaSel ('Just "uDouble#") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (UDouble :: Type -> Type)))

data Float #

Single-precision floating point numbers. It is desirable that this type be at least equal in range and precision to the IEEE single-precision type.

Instances

Instances details

Eq Float	Note that due to the presence of `NaN`, `Float`'s `Eq` instance does not satisfy reflexivity. `>>>` `0/0 == (0/0 :: Float)`False Also note that `Float`'s `Eq` instance does not satisfy substitutivity: `>>>` `0 == (-0 :: Float)`True `>>>` `recip 0 == recip (-0 :: Float)`False
Instance details Defined in GHC.Classes Methods (==) :: Float -> Float -> Bool # (/=) :: Float -> Float -> Bool #
Floating Float	Since: base-2.1
Instance details Defined in GHC.Float Methods pi :: Float # exp :: Float -> Float # log :: Float -> Float # sqrt :: Float -> Float # (**) :: Float -> Float -> Float # logBase :: Float -> Float -> Float # sin :: Float -> Float # cos :: Float -> Float # tan :: Float -> Float # asin :: Float -> Float # acos :: Float -> Float # atan :: Float -> Float # sinh :: Float -> Float # cosh :: Float -> Float # tanh :: Float -> Float # asinh :: Float -> Float # acosh :: Float -> Float # atanh :: Float -> Float # log1p :: Float -> Float # expm1 :: Float -> Float # log1pexp :: Float -> Float # log1mexp :: Float -> Float #
Ord Float	Note that due to the presence of `NaN`, `Float`'s `Ord` instance does not satisfy reflexivity. `>>>` `0/0 <= (0/0 :: Float)`False Also note that, due to the same, `Ord`'s operator interactions are not respected by `Float`'s instance: `>>>` `(0/0 :: Float) > 1`False `>>>` `compare (0/0 :: Float) 1`GT
Instance details Defined in GHC.Classes Methods compare :: Float -> Float -> Ordering # (<) :: Float -> Float -> Bool # (<=) :: Float -> Float -> Bool # (>) :: Float -> Float -> Bool # (>=) :: Float -> Float -> Bool # max :: Float -> Float -> Float # min :: Float -> Float -> Float #
Read Float	Since: base-2.1
Instance details Defined in GHC.Read Methods readsPrec :: Int -> ReadS Float # readList :: ReadS [Float] # readPrec :: ReadPrec Float # readListPrec :: ReadPrec [Float] #
RealFloat Float	Since: base-2.1
Instance details Defined in GHC.Float Methods floatRadix :: Float -> Integer # floatDigits :: Float -> Int # floatRange :: Float -> (Int, Int) # decodeFloat :: Float -> (Integer, Int) # encodeFloat :: Integer -> Int -> Float # exponent :: Float -> Int # significand :: Float -> Float # scaleFloat :: Int -> Float -> Float # isNaN :: Float -> Bool # isInfinite :: Float -> Bool # isDenormalized :: Float -> Bool # isNegativeZero :: Float -> Bool # isIEEE :: Float -> Bool # atan2 :: Float -> Float -> Float #
Hashable Float	Note: prior to `hashable-1.3.0.0`, `hash 0.0 /= hash (-0.0)` The `hash` of NaN is not well defined. Since: hashable-1.3.0.0
Instance details Defined in Data.Hashable.Class Methods hashWithSalt :: Int -> Float -> Int # hash :: Float -> Int #
ToJSON Float
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: Float -> Value # toEncoding :: Float -> Encoding # toJSONList :: [Float] -> Value # toEncodingList :: [Float] -> Encoding #
ToJSONKey Float
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSONKey :: ToJSONKeyFunction Float # toJSONKeyList :: ToJSONKeyFunction [Float] #
FromJSON Float
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser Float # parseJSONList :: Value -> Parser [Float] #
FromJSONKey Float
Instance details Defined in Data.Aeson.Types.FromJSON Methods fromJSONKey :: FromJSONKeyFunction Float # fromJSONKeyList :: FromJSONKeyFunction [Float] #
PrintfArg Float	Since: base-2.1
Instance details Defined in Text.Printf Methods formatArg :: Float -> FieldFormatter # parseFormat :: Float -> ModifierParser #
Storable Float	Since: base-2.1
Instance details Defined in Foreign.Storable Methods sizeOf :: Float -> Int # alignment :: Float -> Int # peekElemOff :: Ptr Float -> Int -> IO Float # pokeElemOff :: Ptr Float -> Int -> Float -> IO () # peekByteOff :: Ptr b -> Int -> IO Float # pokeByteOff :: Ptr b -> Int -> Float -> IO () # peek :: Ptr Float -> IO Float # poke :: Ptr Float -> Float -> IO () #
PrimType Float
Instance details Defined in Basement.PrimType Associated Types type PrimSize Float :: Nat # Methods primSizeInBytes :: Proxy Float -> CountOf Word8 # primShiftToBytes :: Proxy Float -> Int # primBaUIndex :: ByteArray# -> Offset Float -> Float # primMbaURead :: PrimMonad prim => MutableByteArray# (PrimState prim) -> Offset Float -> prim Float # primMbaUWrite :: PrimMonad prim => MutableByteArray# (PrimState prim) -> Offset Float -> Float -> prim () # primAddrIndex :: Addr# -> Offset Float -> Float # primAddrRead :: PrimMonad prim => Addr# -> Offset Float -> prim Float # primAddrWrite :: PrimMonad prim => Addr# -> Offset Float -> Float -> prim () #
Subtractive Float
Instance details Defined in Basement.Numerical.Subtractive Associated Types type Difference Float # Methods (-) :: Float -> Float -> Difference Float #
ToValue Float
Instance details Defined in Text.Blaze Methods toValue :: Float -> AttributeValue # preEscapedToValue :: Float -> AttributeValue #
ToMarkup Float
Instance details Defined in Text.Blaze Methods toMarkup :: Float -> Markup # preEscapedToMarkup :: Float -> Markup #
Default Float
Instance details Defined in Data.Default.Class Methods def :: Float #
ToLogStr Float	Since: fast-logger-2.4.14
Instance details Defined in System.Log.FastLogger.LogStr Methods toLogStr :: Float -> LogStr #
Pretty Float	`>>>` `pretty (pi :: Float)`3.1415927
Instance details Defined in Prettyprinter.Internal Methods pretty :: Float -> Doc ann # prettyList :: [Float] -> Doc ann #
Prim Float
Instance details Defined in Data.Primitive.Types Methods sizeOf# :: Float -> Int# # alignment# :: Float -> Int# # indexByteArray# :: ByteArray# -> Int# -> Float # readByteArray# :: MutableByteArray# s -> Int# -> State# s -> (# State# s, Float #) # writeByteArray# :: MutableByteArray# s -> Int# -> Float -> State# s -> State# s # setByteArray# :: MutableByteArray# s -> Int# -> Int# -> Float -> State# s -> State# s # indexOffAddr# :: Addr# -> Int# -> Float # readOffAddr# :: Addr# -> Int# -> State# s -> (# State# s, Float #) # writeOffAddr# :: Addr# -> Int# -> Float -> State# s -> State# s # setOffAddr# :: Addr# -> Int# -> Int# -> Float -> State# s -> State# s #
UniformRange Float	See Floating point number caveats.
Instance details Defined in System.Random.Internal Methods uniformRM :: StatefulGen g m => (Float, Float) -> g -> m Float #
Unbox Float
Instance details Defined in Data.Vector.Unboxed.Base
Lift Float
Instance details Defined in Language.Haskell.TH.Syntax Methods lift :: Float -> Q Exp # liftTyped :: Float -> Q (TExp Float) #
Vector Vector Float
Instance details Defined in Data.Vector.Unboxed.Base Methods basicUnsafeFreeze :: PrimMonad m => Mutable Vector (PrimState m) Float -> m (Vector Float) # basicUnsafeThaw :: PrimMonad m => Vector Float -> m (Mutable Vector (PrimState m) Float) # basicLength :: Vector Float -> Int # basicUnsafeSlice :: Int -> Int -> Vector Float -> Vector Float # basicUnsafeIndexM :: Monad m => Vector Float -> Int -> m Float # basicUnsafeCopy :: PrimMonad m => Mutable Vector (PrimState m) Float -> Vector Float -> m () # elemseq :: Vector Float -> Float -> b -> b #
MVector MVector Float
Instance details Defined in Data.Vector.Unboxed.Base Methods basicLength :: MVector s Float -> Int # basicUnsafeSlice :: Int -> Int -> MVector s Float -> MVector s Float # basicOverlaps :: MVector s Float -> MVector s Float -> Bool # basicUnsafeNew :: PrimMonad m => Int -> m (MVector (PrimState m) Float) # basicInitialize :: PrimMonad m => MVector (PrimState m) Float -> m () # basicUnsafeReplicate :: PrimMonad m => Int -> Float -> m (MVector (PrimState m) Float) # basicUnsafeRead :: PrimMonad m => MVector (PrimState m) Float -> Int -> m Float # basicUnsafeWrite :: PrimMonad m => MVector (PrimState m) Float -> Int -> Float -> m () # basicClear :: PrimMonad m => MVector (PrimState m) Float -> m () # basicSet :: PrimMonad m => MVector (PrimState m) Float -> Float -> m () # basicUnsafeCopy :: PrimMonad m => MVector (PrimState m) Float -> MVector (PrimState m) Float -> m () # basicUnsafeMove :: PrimMonad m => MVector (PrimState m) Float -> MVector (PrimState m) Float -> m () # basicUnsafeGrow :: PrimMonad m => MVector (PrimState m) Float -> Int -> m (MVector (PrimState m) Float) #
Generic1 (URec Float :: k -> Type)	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Associated Types type Rep1 (URec Float) :: k -> Type # Methods from1 :: forall (a :: k0). URec Float a -> Rep1 (URec Float) a # to1 :: forall (a :: k0). Rep1 (URec Float) a -> URec Float a #
Foldable (UFloat :: Type -> Type)	Since: base-4.9.0.0
Instance details Defined in Data.Foldable Methods fold :: Monoid m => UFloat m -> m # foldMap :: Monoid m => (a -> m) -> UFloat a -> m # foldMap' :: Monoid m => (a -> m) -> UFloat a -> m # foldr :: (a -> b -> b) -> b -> UFloat a -> b # foldr' :: (a -> b -> b) -> b -> UFloat a -> b # foldl :: (b -> a -> b) -> b -> UFloat a -> b # foldl' :: (b -> a -> b) -> b -> UFloat a -> b # foldr1 :: (a -> a -> a) -> UFloat a -> a # foldl1 :: (a -> a -> a) -> UFloat a -> a # toList :: UFloat a -> [a] # null :: UFloat a -> Bool # length :: UFloat a -> Int # elem :: Eq a => a -> UFloat a -> Bool # maximum :: Ord a => UFloat a -> a # minimum :: Ord a => UFloat a -> a # sum :: Num a => UFloat a -> a # product :: Num a => UFloat a -> a #
Traversable (UFloat :: Type -> Type)	Since: base-4.9.0.0
Instance details Defined in Data.Traversable Methods traverse :: Applicative f => (a -> f b) -> UFloat a -> f (UFloat b) # sequenceA :: Applicative f => UFloat (f a) -> f (UFloat a) # mapM :: Monad m => (a -> m b) -> UFloat a -> m (UFloat b) # sequence :: Monad m => UFloat (m a) -> m (UFloat a) #
Functor (URec Float :: Type -> Type)	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Methods fmap :: (a -> b) -> URec Float a -> URec Float b # (<$) :: a -> URec Float b -> URec Float a #
Eq (URec Float p)
Instance details Defined in GHC.Generics Methods (==) :: URec Float p -> URec Float p -> Bool # (/=) :: URec Float p -> URec Float p -> Bool #
Ord (URec Float p)
Instance details Defined in GHC.Generics Methods compare :: URec Float p -> URec Float p -> Ordering # (<) :: URec Float p -> URec Float p -> Bool # (<=) :: URec Float p -> URec Float p -> Bool # (>) :: URec Float p -> URec Float p -> Bool # (>=) :: URec Float p -> URec Float p -> Bool # max :: URec Float p -> URec Float p -> URec Float p # min :: URec Float p -> URec Float p -> URec Float p #
Show (URec Float p)
Instance details Defined in GHC.Generics Methods showsPrec :: Int -> URec Float p -> ShowS # show :: URec Float p -> String # showList :: [URec Float p] -> ShowS #
Generic (URec Float p)
Instance details Defined in GHC.Generics Associated Types type Rep (URec Float p) :: Type -> Type # Methods from :: URec Float p -> Rep (URec Float p) x # to :: Rep (URec Float p) x -> URec Float p #
type PrimSize Float
Instance details Defined in Basement.PrimType type PrimSize Float = 4
type Difference Float
Instance details Defined in Basement.Numerical.Subtractive type Difference Float = Float
newtype Vector Float
Instance details Defined in Data.Vector.Unboxed.Base newtype Vector Float = V_Float (Vector Float)
data URec Float (p :: k)	Used for marking occurrences of `Float#` Since: base-4.9.0.0
Instance details Defined in GHC.Generics data URec Float (p :: k) = UFloat { uFloat# :: Float# }
newtype MVector s Float
Instance details Defined in Data.Vector.Unboxed.Base newtype MVector s Float = MV_Float (MVector s Float)
type Rep1 (URec Float :: k -> Type)
Instance details Defined in GHC.Generics type Rep1 (URec Float :: k -> Type) = D1 ('MetaData "URec" "GHC.Generics" "base" 'False) (C1 ('MetaCons "UFloat" 'PrefixI 'True) (S1 ('MetaSel ('Just "uFloat#") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (UFloat :: k -> Type)))
type Rep (URec Float p)
Instance details Defined in GHC.Generics type Rep (URec Float p) = D1 ('MetaData "URec" "GHC.Generics" "base" 'False) (C1 ('MetaCons "UFloat" 'PrefixI 'True) (S1 ('MetaSel ('Just "uFloat#") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (UFloat :: Type -> Type)))

data Int #

A fixed-precision integer type with at least the range [-2^29 .. 2^29-1]. The exact range for a given implementation can be determined by using minBound and maxBound from the Bounded class.

Instances

Instances details

Bounded Int	Since: base-2.1
Instance details Defined in GHC.Enum Methods minBound :: Int # maxBound :: Int #
Enum Int	Since: base-2.1
Instance details Defined in GHC.Enum Methods succ :: Int -> Int # pred :: Int -> Int # toEnum :: Int -> Int # fromEnum :: Int -> Int # enumFrom :: Int -> [Int] # enumFromThen :: Int -> Int -> [Int] # enumFromTo :: Int -> Int -> [Int] # enumFromThenTo :: Int -> Int -> Int -> [Int] #
Eq Int
Instance details Defined in GHC.Classes Methods (==) :: Int -> Int -> Bool # (/=) :: Int -> Int -> Bool #
Integral Int	Since: base-2.0.1
Instance details Defined in GHC.Real Methods quot :: Int -> Int -> Int # rem :: Int -> Int -> Int # div :: Int -> Int -> Int # mod :: Int -> Int -> Int # quotRem :: Int -> Int -> (Int, Int) # divMod :: Int -> Int -> (Int, Int) # toInteger :: Int -> Integer #
Num Int	Since: base-2.1
Instance details Defined in GHC.Num Methods (+) :: Int -> Int -> Int # (-) :: Int -> Int -> Int # (*) :: Int -> Int -> Int # negate :: Int -> Int # abs :: Int -> Int # signum :: Int -> Int # fromInteger :: Integer -> Int #
Ord Int
Instance details Defined in GHC.Classes Methods compare :: Int -> Int -> Ordering # (<) :: Int -> Int -> Bool # (<=) :: Int -> Int -> Bool # (>) :: Int -> Int -> Bool # (>=) :: Int -> Int -> Bool # max :: Int -> Int -> Int # min :: Int -> Int -> Int #
Read Int	Since: base-2.1
Instance details Defined in GHC.Read Methods readsPrec :: Int -> ReadS Int # readList :: ReadS [Int] # readPrec :: ReadPrec Int # readListPrec :: ReadPrec [Int] #
Real Int	Since: base-2.0.1
Instance details Defined in GHC.Real Methods toRational :: Int -> Rational #
Show Int	Since: base-2.1
Instance details Defined in GHC.Show Methods showsPrec :: Int -> Int -> ShowS # show :: Int -> String # showList :: [Int] -> ShowS #
Hashable Int
Instance details Defined in Data.Hashable.Class Methods hashWithSalt :: Int -> Int -> Int # hash :: Int -> Int #
ToJSON Int
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: Int -> Value # toEncoding :: Int -> Encoding # toJSONList :: [Int] -> Value # toEncodingList :: [Int] -> Encoding #
ToJSONKey Int
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSONKey :: ToJSONKeyFunction Int # toJSONKeyList :: ToJSONKeyFunction [Int] #
FromJSON Int
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser Int # parseJSONList :: Value -> Parser [Int] #
FromJSONKey Int
Instance details Defined in Data.Aeson.Types.FromJSON Methods fromJSONKey :: FromJSONKeyFunction Int # fromJSONKeyList :: FromJSONKeyFunction [Int] #
PrintfArg Int	Since: base-2.1
Instance details Defined in Text.Printf Methods formatArg :: Int -> FieldFormatter # parseFormat :: Int -> ModifierParser #
Storable Int	Since: base-2.1
Instance details Defined in Foreign.Storable Methods sizeOf :: Int -> Int # alignment :: Int -> Int # peekElemOff :: Ptr Int -> Int -> IO Int # pokeElemOff :: Ptr Int -> Int -> Int -> IO () # peekByteOff :: Ptr b -> Int -> IO Int # pokeByteOff :: Ptr b -> Int -> Int -> IO () # peek :: Ptr Int -> IO Int # poke :: Ptr Int -> Int -> IO () #
PrimType Int
Instance details Defined in Basement.PrimType Associated Types type PrimSize Int :: Nat # Methods primSizeInBytes :: Proxy Int -> CountOf Word8 # primShiftToBytes :: Proxy Int -> Int # primBaUIndex :: ByteArray# -> Offset Int -> Int # primMbaURead :: PrimMonad prim => MutableByteArray# (PrimState prim) -> Offset Int -> prim Int # primMbaUWrite :: PrimMonad prim => MutableByteArray# (PrimState prim) -> Offset Int -> Int -> prim () # primAddrIndex :: Addr# -> Offset Int -> Int # primAddrRead :: PrimMonad prim => Addr# -> Offset Int -> prim Int # primAddrWrite :: PrimMonad prim => Addr# -> Offset Int -> Int -> prim () #
PrimMemoryComparable Int
Instance details Defined in Basement.PrimType
Subtractive Int
Instance details Defined in Basement.Numerical.Subtractive Associated Types type Difference Int # Methods (-) :: Int -> Int -> Difference Int #
ToValue Int
Instance details Defined in Text.Blaze Methods toValue :: Int -> AttributeValue # preEscapedToValue :: Int -> AttributeValue #
ToMarkup Int
Instance details Defined in Text.Blaze Methods toMarkup :: Int -> Markup # preEscapedToMarkup :: Int -> Markup #
Default Int
Instance details Defined in Data.Default.Class Methods def :: Int #
ToLogStr Int	Since: fast-logger-2.4.14
Instance details Defined in System.Log.FastLogger.LogStr Methods toLogStr :: Int -> LogStr #
PathPiece Int
Instance details Defined in Web.PathPieces Methods fromPathPiece :: Text -> Maybe Int # toPathPiece :: Int -> Text #
PersistField Int
Instance details Defined in Database.Persist.Class.PersistField Methods toPersistValue :: Int -> PersistValue # fromPersistValue :: PersistValue -> Either Text Int #
Pretty Int	`>>>` `pretty (123 :: Int)`123
Instance details Defined in Prettyprinter.Internal Methods pretty :: Int -> Doc ann # prettyList :: [Int] -> Doc ann #
Prim Int
Instance details Defined in Data.Primitive.Types Methods sizeOf# :: Int -> Int# # alignment# :: Int -> Int# # indexByteArray# :: ByteArray# -> Int# -> Int # readByteArray# :: MutableByteArray# s -> Int# -> State# s -> (# State# s, Int #) # writeByteArray# :: MutableByteArray# s -> Int# -> Int -> State# s -> State# s # setByteArray# :: MutableByteArray# s -> Int# -> Int# -> Int -> State# s -> State# s # indexOffAddr# :: Addr# -> Int# -> Int # readOffAddr# :: Addr# -> Int# -> State# s -> (# State# s, Int #) # writeOffAddr# :: Addr# -> Int# -> Int -> State# s -> State# s # setOffAddr# :: Addr# -> Int# -> Int# -> Int -> State# s -> State# s #
Uniform Int
Instance details Defined in System.Random.Internal Methods uniformM :: StatefulGen g m => g -> m Int #
UniformRange Int
Instance details Defined in System.Random.Internal Methods uniformRM :: StatefulGen g m => (Int, Int) -> g -> m Int #
ToText Int
Instance details Defined in Text.Shakespeare.Text Methods toText :: Int -> Builder #
ByteSource Int
Instance details Defined in Data.UUID.Types.Internal.Builder Methods (/-/) :: ByteSink Int g -> Int -> g
Unbox Int
Instance details Defined in Data.Vector.Unboxed.Base
Lift Int
Instance details Defined in Language.Haskell.TH.Syntax Methods lift :: Int -> Q Exp # liftTyped :: Int -> Q (TExp Int) #
Vector Vector Int
Instance details Defined in Data.Vector.Unboxed.Base Methods basicUnsafeFreeze :: PrimMonad m => Mutable Vector (PrimState m) Int -> m (Vector Int) # basicUnsafeThaw :: PrimMonad m => Vector Int -> m (Mutable Vector (PrimState m) Int) # basicLength :: Vector Int -> Int # basicUnsafeSlice :: Int -> Int -> Vector Int -> Vector Int # basicUnsafeIndexM :: Monad m => Vector Int -> Int -> m Int # basicUnsafeCopy :: PrimMonad m => Mutable Vector (PrimState m) Int -> Vector Int -> m () # elemseq :: Vector Int -> Int -> b -> b #
MVector MVector Int
Instance details Defined in Data.Vector.Unboxed.Base Methods basicLength :: MVector s Int -> Int # basicUnsafeSlice :: Int -> Int -> MVector s Int -> MVector s Int # basicOverlaps :: MVector s Int -> MVector s Int -> Bool # basicUnsafeNew :: PrimMonad m => Int -> m (MVector (PrimState m) Int) # basicInitialize :: PrimMonad m => MVector (PrimState m) Int -> m () # basicUnsafeReplicate :: PrimMonad m => Int -> Int -> m (MVector (PrimState m) Int) # basicUnsafeRead :: PrimMonad m => MVector (PrimState m) Int -> Int -> m Int # basicUnsafeWrite :: PrimMonad m => MVector (PrimState m) Int -> Int -> Int -> m () # basicClear :: PrimMonad m => MVector (PrimState m) Int -> m () # basicSet :: PrimMonad m => MVector (PrimState m) Int -> Int -> m () # basicUnsafeCopy :: PrimMonad m => MVector (PrimState m) Int -> MVector (PrimState m) Int -> m () # basicUnsafeMove :: PrimMonad m => MVector (PrimState m) Int -> MVector (PrimState m) Int -> m () # basicUnsafeGrow :: PrimMonad m => MVector (PrimState m) Int -> Int -> m (MVector (PrimState m) Int) #
Generic1 (URec Int :: k -> Type)	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Associated Types type Rep1 (URec Int) :: k -> Type # Methods from1 :: forall (a :: k0). URec Int a -> Rep1 (URec Int) a # to1 :: forall (a :: k0). Rep1 (URec Int) a -> URec Int a #
Foldable (UInt :: Type -> Type)	Since: base-4.9.0.0
Instance details Defined in Data.Foldable Methods fold :: Monoid m => UInt m -> m # foldMap :: Monoid m => (a -> m) -> UInt a -> m # foldMap' :: Monoid m => (a -> m) -> UInt a -> m # foldr :: (a -> b -> b) -> b -> UInt a -> b # foldr' :: (a -> b -> b) -> b -> UInt a -> b # foldl :: (b -> a -> b) -> b -> UInt a -> b # foldl' :: (b -> a -> b) -> b -> UInt a -> b # foldr1 :: (a -> a -> a) -> UInt a -> a # foldl1 :: (a -> a -> a) -> UInt a -> a # toList :: UInt a -> [a] # null :: UInt a -> Bool # length :: UInt a -> Int # elem :: Eq a => a -> UInt a -> Bool # maximum :: Ord a => UInt a -> a # minimum :: Ord a => UInt a -> a # sum :: Num a => UInt a -> a # product :: Num a => UInt a -> a #
Traversable (UInt :: Type -> Type)	Since: base-4.9.0.0
Instance details Defined in Data.Traversable Methods traverse :: Applicative f => (a -> f b) -> UInt a -> f (UInt b) # sequenceA :: Applicative f => UInt (f a) -> f (UInt a) # mapM :: Monad m => (a -> m b) -> UInt a -> m (UInt b) # sequence :: Monad m => UInt (m a) -> m (UInt a) #
Functor (URec Int :: Type -> Type)	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Methods fmap :: (a -> b) -> URec Int a -> URec Int b # (<$) :: a -> URec Int b -> URec Int a #
Eq (URec Int p)	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Methods (==) :: URec Int p -> URec Int p -> Bool # (/=) :: URec Int p -> URec Int p -> Bool #
Ord (URec Int p)	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Methods compare :: URec Int p -> URec Int p -> Ordering # (<) :: URec Int p -> URec Int p -> Bool # (<=) :: URec Int p -> URec Int p -> Bool # (>) :: URec Int p -> URec Int p -> Bool # (>=) :: URec Int p -> URec Int p -> Bool # max :: URec Int p -> URec Int p -> URec Int p # min :: URec Int p -> URec Int p -> URec Int p #
Show (URec Int p)	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Methods showsPrec :: Int -> URec Int p -> ShowS # show :: URec Int p -> String # showList :: [URec Int p] -> ShowS #
Generic (URec Int p)	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Associated Types type Rep (URec Int p) :: Type -> Type # Methods from :: URec Int p -> Rep (URec Int p) x # to :: Rep (URec Int p) x -> URec Int p #
type PrimSize Int
Instance details Defined in Basement.PrimType type PrimSize Int = 8
type Difference Int
Instance details Defined in Basement.Numerical.Subtractive type Difference Int = Int
type NatNumMaxBound Int
Instance details Defined in Basement.Nat type NatNumMaxBound Int = NatNumMaxBound Int64
newtype Vector Int
Instance details Defined in Data.Vector.Unboxed.Base newtype Vector Int = V_Int (Vector Int)
data URec Int (p :: k)	Used for marking occurrences of `Int#` Since: base-4.9.0.0
Instance details Defined in GHC.Generics data URec Int (p :: k) = UInt { uInt# :: Int# }
type ByteSink Int g
Instance details Defined in Data.UUID.Types.Internal.Builder type ByteSink Int g = Takes4Bytes g
newtype MVector s Int
Instance details Defined in Data.Vector.Unboxed.Base newtype MVector s Int = MV_Int (MVector s Int)
type Rep1 (URec Int :: k -> Type)
Instance details Defined in GHC.Generics type Rep1 (URec Int :: k -> Type) = D1 ('MetaData "URec" "GHC.Generics" "base" 'False) (C1 ('MetaCons "UInt" 'PrefixI 'True) (S1 ('MetaSel ('Just "uInt#") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (UInt :: k -> Type)))
type Rep (URec Int p)
Instance details Defined in GHC.Generics type Rep (URec Int p) = D1 ('MetaData "URec" "GHC.Generics" "base" 'False) (C1 ('MetaCons "UInt" 'PrefixI 'True) (S1 ('MetaSel ('Just "uInt#") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (UInt :: Type -> Type)))

data Integer #

Arbitrary precision integers. In contrast with fixed-size integral types such as Int, the Integer type represents the entire infinite range of integers.

For more information about this type's representation, see the comments in its implementation.

Instances

Instances details

Enum Integer	Since: base-2.1
Instance details Defined in GHC.Enum Methods succ :: Integer -> Integer # pred :: Integer -> Integer # toEnum :: Int -> Integer # fromEnum :: Integer -> Int # enumFrom :: Integer -> [Integer] # enumFromThen :: Integer -> Integer -> [Integer] # enumFromTo :: Integer -> Integer -> [Integer] # enumFromThenTo :: Integer -> Integer -> Integer -> [Integer] #
Eq Integer
Instance details Defined in GHC.Integer.Type Methods (==) :: Integer -> Integer -> Bool # (/=) :: Integer -> Integer -> Bool #
Integral Integer	Since: base-2.0.1
Instance details Defined in GHC.Real Methods quot :: Integer -> Integer -> Integer # rem :: Integer -> Integer -> Integer # div :: Integer -> Integer -> Integer # mod :: Integer -> Integer -> Integer # quotRem :: Integer -> Integer -> (Integer, Integer) # divMod :: Integer -> Integer -> (Integer, Integer) # toInteger :: Integer -> Integer #
Num Integer	Since: base-2.1
Instance details Defined in GHC.Num Methods (+) :: Integer -> Integer -> Integer # (-) :: Integer -> Integer -> Integer # (*) :: Integer -> Integer -> Integer # negate :: Integer -> Integer # abs :: Integer -> Integer # signum :: Integer -> Integer # fromInteger :: Integer -> Integer #
Ord Integer
Instance details Defined in GHC.Integer.Type Methods compare :: Integer -> Integer -> Ordering # (<) :: Integer -> Integer -> Bool # (<=) :: Integer -> Integer -> Bool # (>) :: Integer -> Integer -> Bool # (>=) :: Integer -> Integer -> Bool # max :: Integer -> Integer -> Integer # min :: Integer -> Integer -> Integer #
Read Integer	Since: base-2.1
Instance details Defined in GHC.Read Methods readsPrec :: Int -> ReadS Integer # readList :: ReadS [Integer] # readPrec :: ReadPrec Integer # readListPrec :: ReadPrec [Integer] #
Real Integer	Since: base-2.0.1
Instance details Defined in GHC.Real Methods toRational :: Integer -> Rational #
Show Integer	Since: base-2.1
Instance details Defined in GHC.Show Methods showsPrec :: Int -> Integer -> ShowS # show :: Integer -> String # showList :: [Integer] -> ShowS #
Hashable Integer
Instance details Defined in Data.Hashable.Class Methods hashWithSalt :: Int -> Integer -> Int # hash :: Integer -> Int #
ToJSON Integer
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: Integer -> Value # toEncoding :: Integer -> Encoding # toJSONList :: [Integer] -> Value # toEncodingList :: [Integer] -> Encoding #
ToJSONKey Integer
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSONKey :: ToJSONKeyFunction Integer # toJSONKeyList :: ToJSONKeyFunction [Integer] #
FromJSON Integer	This instance includes a bounds check to prevent maliciously large inputs to fill up the memory of the target system. You can newtype `Scientific` and provide your own instance using `withScientific` if you want to allow larger inputs.
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser Integer # parseJSONList :: Value -> Parser [Integer] #
FromJSONKey Integer
Instance details Defined in Data.Aeson.Types.FromJSON Methods fromJSONKey :: FromJSONKeyFunction Integer # fromJSONKeyList :: FromJSONKeyFunction [Integer] #
PrintfArg Integer	Since: base-2.1
Instance details Defined in Text.Printf Methods formatArg :: Integer -> FieldFormatter # parseFormat :: Integer -> ModifierParser #
Subtractive Integer
Instance details Defined in Basement.Numerical.Subtractive Associated Types type Difference Integer # Methods (-) :: Integer -> Integer -> Difference Integer #
ToValue Integer
Instance details Defined in Text.Blaze Methods toValue :: Integer -> AttributeValue # preEscapedToValue :: Integer -> AttributeValue #
ToMarkup Integer
Instance details Defined in Text.Blaze Methods toMarkup :: Integer -> Markup # preEscapedToMarkup :: Integer -> Markup #
Default Integer
Instance details Defined in Data.Default.Class Methods def :: Integer #
ToLogStr Integer	Since: fast-logger-2.4.14
Instance details Defined in System.Log.FastLogger.LogStr Methods toLogStr :: Integer -> LogStr #
PathPiece Integer
Instance details Defined in Web.PathPieces Methods fromPathPiece :: Text -> Maybe Integer # toPathPiece :: Integer -> Text #
PersistField Rational
Instance details Defined in Database.Persist.Class.PersistField Methods toPersistValue :: Rational -> PersistValue # fromPersistValue :: PersistValue -> Either Text Rational #
Pretty Integer	`>>>` `pretty (2^123 :: Integer)`10633823966279326983230456482242756608
Instance details Defined in Prettyprinter.Internal Methods pretty :: Integer -> Doc ann # prettyList :: [Integer] -> Doc ann #
UniformRange Integer
Instance details Defined in System.Random.Internal Methods uniformRM :: StatefulGen g m => (Integer, Integer) -> g -> m Integer #
Lift Integer
Instance details Defined in Language.Haskell.TH.Syntax Methods lift :: Integer -> Q Exp # liftTyped :: Integer -> Q (TExp Integer) #
type Difference Integer
Instance details Defined in Basement.Numerical.Subtractive type Difference Integer = Integer

data Maybe a #

The Maybe type encapsulates an optional value. A value of type Maybe a either contains a value of type a (represented as Just a), or it is empty (represented as Nothing). Using Maybe is a good way to deal with errors or exceptional cases without resorting to drastic measures such as error.

The Maybe type is also a monad. It is a simple kind of error monad, where all errors are represented by Nothing. A richer error monad can be built using the Either type.

Constructors

Nothing
Just a

Instances

Instances details

Monad Maybe	Since: base-2.1
Instance details Defined in GHC.Base Methods (>>=) :: Maybe a -> (a -> Maybe b) -> Maybe b # (>>) :: Maybe a -> Maybe b -> Maybe b # return :: a -> Maybe a #
Functor Maybe	Since: base-2.1
Instance details Defined in GHC.Base Methods fmap :: (a -> b) -> Maybe a -> Maybe b # (<$) :: a -> Maybe b -> Maybe a #
MonadFail Maybe	Since: base-4.9.0.0
Instance details Defined in Control.Monad.Fail Methods fail :: String -> Maybe a #
Applicative Maybe	Since: base-2.1
Instance details Defined in GHC.Base Methods pure :: a -> Maybe a # (<>) :: Maybe (a -> b) -> Maybe a -> Maybe b # liftA2 :: (a -> b -> c) -> Maybe a -> Maybe b -> Maybe c # (>) :: Maybe a -> Maybe b -> Maybe b # (<*) :: Maybe a -> Maybe b -> Maybe a #
Foldable Maybe	Since: base-2.1
Instance details Defined in Data.Foldable Methods fold :: Monoid m => Maybe m -> m # foldMap :: Monoid m => (a -> m) -> Maybe a -> m # foldMap' :: Monoid m => (a -> m) -> Maybe a -> m # foldr :: (a -> b -> b) -> b -> Maybe a -> b # foldr' :: (a -> b -> b) -> b -> Maybe a -> b # foldl :: (b -> a -> b) -> b -> Maybe a -> b # foldl' :: (b -> a -> b) -> b -> Maybe a -> b # foldr1 :: (a -> a -> a) -> Maybe a -> a # foldl1 :: (a -> a -> a) -> Maybe a -> a # toList :: Maybe a -> [a] # null :: Maybe a -> Bool # length :: Maybe a -> Int # elem :: Eq a => a -> Maybe a -> Bool # maximum :: Ord a => Maybe a -> a # minimum :: Ord a => Maybe a -> a # sum :: Num a => Maybe a -> a # product :: Num a => Maybe a -> a #
Traversable Maybe	Since: base-2.1
Instance details Defined in Data.Traversable Methods traverse :: Applicative f => (a -> f b) -> Maybe a -> f (Maybe b) # sequenceA :: Applicative f => Maybe (f a) -> f (Maybe a) # mapM :: Monad m => (a -> m b) -> Maybe a -> m (Maybe b) # sequence :: Monad m => Maybe (m a) -> m (Maybe a) #
ToJSON1 Maybe
Instance details Defined in Data.Aeson.Types.ToJSON Methods liftToJSON :: (a -> Value) -> ([a] -> Value) -> Maybe a -> Value # liftToJSONList :: (a -> Value) -> ([a] -> Value) -> [Maybe a] -> Value # liftToEncoding :: (a -> Encoding) -> ([a] -> Encoding) -> Maybe a -> Encoding # liftToEncodingList :: (a -> Encoding) -> ([a] -> Encoding) -> [Maybe a] -> Encoding #
FromJSON1 Maybe
Instance details Defined in Data.Aeson.Types.FromJSON Methods liftParseJSON :: (Value -> Parser a) -> (Value -> Parser [a]) -> Value -> Parser (Maybe a) # liftParseJSONList :: (Value -> Parser a) -> (Value -> Parser [a]) -> Value -> Parser [Maybe a] #
Alternative Maybe	Since: base-2.1
Instance details Defined in GHC.Base Methods empty :: Maybe a # (<\|>) :: Maybe a -> Maybe a -> Maybe a # some :: Maybe a -> Maybe [a] # many :: Maybe a -> Maybe [a] #
MonadPlus Maybe	Since: base-2.1
Instance details Defined in GHC.Base Methods mzero :: Maybe a # mplus :: Maybe a -> Maybe a -> Maybe a #
Eq1 Maybe	Since: base-4.9.0.0
Instance details Defined in Data.Functor.Classes Methods liftEq :: (a -> b -> Bool) -> Maybe a -> Maybe b -> Bool #
Ord1 Maybe	Since: base-4.9.0.0
Instance details Defined in Data.Functor.Classes Methods liftCompare :: (a -> b -> Ordering) -> Maybe a -> Maybe b -> Ordering #
Read1 Maybe	Since: base-4.9.0.0
Instance details Defined in Data.Functor.Classes Methods liftReadsPrec :: (Int -> ReadS a) -> ReadS [a] -> Int -> ReadS (Maybe a) # liftReadList :: (Int -> ReadS a) -> ReadS [a] -> ReadS [Maybe a] # liftReadPrec :: ReadPrec a -> ReadPrec [a] -> ReadPrec (Maybe a) # liftReadListPrec :: ReadPrec a -> ReadPrec [a] -> ReadPrec [Maybe a] #
Show1 Maybe	Since: base-4.9.0.0
Instance details Defined in Data.Functor.Classes Methods liftShowsPrec :: (Int -> a -> ShowS) -> ([a] -> ShowS) -> Int -> Maybe a -> ShowS # liftShowList :: (Int -> a -> ShowS) -> ([a] -> ShowS) -> [Maybe a] -> ShowS #
MonadFailure Maybe
Instance details Defined in Basement.Monad Associated Types type Failure Maybe # Methods mFail :: Failure Maybe -> Maybe () #
Hashable1 Maybe
Instance details Defined in Data.Hashable.Class Methods liftHashWithSalt :: (Int -> a -> Int) -> Int -> Maybe a -> Int #
MonadBaseControl Maybe Maybe
Instance details Defined in Control.Monad.Trans.Control Associated Types type StM Maybe a # Methods liftBaseWith :: (RunInBase Maybe Maybe -> Maybe a) -> Maybe a # restoreM :: StM Maybe a -> Maybe a #
Reportable Maybe e
Instance details Defined in Hledger.Reports.ReportOptions Methods report :: a -> Maybe (Either e a) -> Maybe a
(Selector s, GToJSON' enc arity (K1 i (Maybe a) :: Type -> Type), KeyValuePair enc pairs, Monoid pairs) => RecordToPairs enc pairs arity (S1 s (K1 i (Maybe a) :: Type -> Type))
Instance details Defined in Data.Aeson.Types.ToJSON Methods recordToPairs :: Options -> ToArgs enc arity a0 -> S1 s (K1 i (Maybe a)) a0 -> pairs
Lift a => Lift (Maybe a :: Type)
Instance details Defined in Language.Haskell.TH.Syntax Methods lift :: Maybe a -> Q Exp # liftTyped :: Maybe a -> Q (TExp (Maybe a)) #
(Selector s, FromJSON a) => RecordFromJSON' arity (S1 s (K1 i (Maybe a) :: Type -> Type))
Instance details Defined in Data.Aeson.Types.FromJSON Methods recordParseJSON' :: (ConName :* (TypeName :* (Options :* FromArgs arity a0))) -> Object -> Parser (S1 s (K1 i (Maybe a)) a0)
Eq a => Eq (Maybe a)	Since: base-2.1
Instance details Defined in GHC.Maybe Methods (==) :: Maybe a -> Maybe a -> Bool # (/=) :: Maybe a -> Maybe a -> Bool #
Ord a => Ord (Maybe a)	Since: base-2.1
Instance details Defined in GHC.Maybe Methods compare :: Maybe a -> Maybe a -> Ordering # (<) :: Maybe a -> Maybe a -> Bool # (<=) :: Maybe a -> Maybe a -> Bool # (>) :: Maybe a -> Maybe a -> Bool # (>=) :: Maybe a -> Maybe a -> Bool # max :: Maybe a -> Maybe a -> Maybe a # min :: Maybe a -> Maybe a -> Maybe a #
Read a => Read (Maybe a)	Since: base-2.1
Instance details Defined in GHC.Read Methods readsPrec :: Int -> ReadS (Maybe a) # readList :: ReadS [Maybe a] # readPrec :: ReadPrec (Maybe a) # readListPrec :: ReadPrec [Maybe a] #
Show a => Show (Maybe a)	Since: base-2.1
Instance details Defined in GHC.Show Methods showsPrec :: Int -> Maybe a -> ShowS # show :: Maybe a -> String # showList :: [Maybe a] -> ShowS #
Generic (Maybe a)	Since: base-4.6.0.0
Instance details Defined in GHC.Generics Associated Types type Rep (Maybe a) :: Type -> Type # Methods from :: Maybe a -> Rep (Maybe a) x # to :: Rep (Maybe a) x -> Maybe a #
Semigroup a => Semigroup (Maybe a)	Since: base-4.9.0.0
Instance details Defined in GHC.Base Methods (<>) :: Maybe a -> Maybe a -> Maybe a # sconcat :: NonEmpty (Maybe a) -> Maybe a # stimes :: Integral b => b -> Maybe a -> Maybe a #
Semigroup a => Monoid (Maybe a)	Lift a semigroup into `Maybe` forming a `Monoid` according to http://en.wikipedia.org/wiki/Monoid: "Any semigroup `S` may be turned into a monoid simply by adjoining an element `e` not in `S` and defining `ee = e` and `es = s = se` for all `s ∈ S`." Since 4.11.0: constraint on inner `a` value generalised from `Monoid` to `Semigroup`. Since: base-2.1*
Instance details Defined in GHC.Base Methods mempty :: Maybe a # mappend :: Maybe a -> Maybe a -> Maybe a # mconcat :: [Maybe a] -> Maybe a #
Hashable a => Hashable (Maybe a)
Instance details Defined in Data.Hashable.Class Methods hashWithSalt :: Int -> Maybe a -> Int # hash :: Maybe a -> Int #
ToJSON a => ToJSON (Maybe a)
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: Maybe a -> Value # toEncoding :: Maybe a -> Encoding # toJSONList :: [Maybe a] -> Value # toEncodingList :: [Maybe a] -> Encoding #
FromJSON a => FromJSON (Maybe a)
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser (Maybe a) # parseJSONList :: Value -> Parser [Maybe a] #
Default (Maybe a)
Instance details Defined in Data.Default.Class Methods def :: Maybe a #
MonoFunctor (Maybe a)
Instance details Defined in Data.MonoTraversable Methods omap :: (Element (Maybe a) -> Element (Maybe a)) -> Maybe a -> Maybe a #
MonoFoldable (Maybe a)
Instance details Defined in Data.MonoTraversable Methods ofoldMap :: Monoid m => (Element (Maybe a) -> m) -> Maybe a -> m # ofoldr :: (Element (Maybe a) -> b -> b) -> b -> Maybe a -> b # ofoldl' :: (a0 -> Element (Maybe a) -> a0) -> a0 -> Maybe a -> a0 # otoList :: Maybe a -> [Element (Maybe a)] # oall :: (Element (Maybe a) -> Bool) -> Maybe a -> Bool # oany :: (Element (Maybe a) -> Bool) -> Maybe a -> Bool # onull :: Maybe a -> Bool # olength :: Maybe a -> Int # olength64 :: Maybe a -> Int64 # ocompareLength :: Integral i => Maybe a -> i -> Ordering # otraverse_ :: Applicative f => (Element (Maybe a) -> f b) -> Maybe a -> f () # ofor_ :: Applicative f => Maybe a -> (Element (Maybe a) -> f b) -> f () # omapM_ :: Applicative m => (Element (Maybe a) -> m ()) -> Maybe a -> m () # oforM_ :: Applicative m => Maybe a -> (Element (Maybe a) -> m ()) -> m () # ofoldlM :: Monad m => (a0 -> Element (Maybe a) -> m a0) -> a0 -> Maybe a -> m a0 # ofoldMap1Ex :: Semigroup m => (Element (Maybe a) -> m) -> Maybe a -> m # ofoldr1Ex :: (Element (Maybe a) -> Element (Maybe a) -> Element (Maybe a)) -> Maybe a -> Element (Maybe a) # ofoldl1Ex' :: (Element (Maybe a) -> Element (Maybe a) -> Element (Maybe a)) -> Maybe a -> Element (Maybe a) # headEx :: Maybe a -> Element (Maybe a) # lastEx :: Maybe a -> Element (Maybe a) # unsafeHead :: Maybe a -> Element (Maybe a) # unsafeLast :: Maybe a -> Element (Maybe a) # maximumByEx :: (Element (Maybe a) -> Element (Maybe a) -> Ordering) -> Maybe a -> Element (Maybe a) # minimumByEx :: (Element (Maybe a) -> Element (Maybe a) -> Ordering) -> Maybe a -> Element (Maybe a) # oelem :: Element (Maybe a) -> Maybe a -> Bool # onotElem :: Element (Maybe a) -> Maybe a -> Bool #
MonoTraversable (Maybe a)
Instance details Defined in Data.MonoTraversable Methods otraverse :: Applicative f => (Element (Maybe a) -> f (Element (Maybe a))) -> Maybe a -> f (Maybe a) # omapM :: Applicative m => (Element (Maybe a) -> m (Element (Maybe a))) -> Maybe a -> m (Maybe a) #
MonoPointed (Maybe a)
Instance details Defined in Data.MonoTraversable Methods opoint :: Element (Maybe a) -> Maybe a #
PathPiece a => PathPiece (Maybe a)
Instance details Defined in Web.PathPieces Methods fromPathPiece :: Text -> Maybe (Maybe a) # toPathPiece :: Maybe a -> Text #
PersistField a => PersistField (Maybe a)
Instance details Defined in Database.Persist.Class.PersistField Methods toPersistValue :: Maybe a -> PersistValue # fromPersistValue :: PersistValue -> Either Text (Maybe a) #
Pretty a => Pretty (Maybe a)	Ignore `Nothing`s, print `Just` contents. `>>>` `pretty (Just True)`True `>>>` `braces (pretty (Nothing :: Maybe Bool))`{} `>>>` `pretty [Just 1, Nothing, Just 3, Nothing]`[1, 3]
Instance details Defined in Prettyprinter.Internal Methods pretty :: Maybe a -> Doc ann # prettyList :: [Maybe a] -> Doc ann #
SingKind a => SingKind (Maybe a)	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Associated Types type DemoteRep (Maybe a) Methods fromSing :: forall (a0 :: Maybe a). Sing a0 -> DemoteRep (Maybe a)
Generic1 Maybe	Since: base-4.6.0.0
Instance details Defined in GHC.Generics Associated Types type Rep1 Maybe :: k -> Type # Methods from1 :: forall (a :: k). Maybe a -> Rep1 Maybe a # to1 :: forall (a :: k). Rep1 Maybe a -> Maybe a #
SingI ('Nothing :: Maybe a)	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Methods sing :: Sing 'Nothing
Each (Maybe a) (Maybe b) a b
Instance details Defined in Lens.Micro.Internal Methods each :: Traversal (Maybe a) (Maybe b) a b #
SingI a2 => SingI ('Just a2 :: Maybe a1)	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Methods sing :: Sing ('Just a2)
type Failure Maybe
Instance details Defined in Basement.Monad type Failure Maybe = ()
type StM Maybe a
Instance details Defined in Control.Monad.Trans.Control type StM Maybe a = a
type Rep (Maybe a)
Instance details Defined in GHC.Generics type Rep (Maybe a) = D1 ('MetaData "Maybe" "GHC.Maybe" "base" 'False) (C1 ('MetaCons "Nothing" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "Just" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 a)))
type Element (Maybe a)
Instance details Defined in Data.MonoTraversable type Element (Maybe a) = a
type DemoteRep (Maybe a)
Instance details Defined in GHC.Generics type DemoteRep (Maybe a) = Maybe (DemoteRep a)
data Sing (b :: Maybe a)
Instance details Defined in GHC.Generics data Sing (b :: Maybe a) where SNothing :: forall a. Sing ('Nothing :: Maybe a) SJust :: forall a (a1 :: a). Sing a1 -> Sing ('Just a1)
type Rep1 Maybe
Instance details Defined in GHC.Generics type Rep1 Maybe = D1 ('MetaData "Maybe" "GHC.Maybe" "base" 'False) (C1 ('MetaCons "Nothing" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "Just" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) Par1))

data Ordering #

Constructors

LT
EQ
GT

Instances

Instances details

Bounded Ordering	Since: base-2.1
Instance details Defined in GHC.Enum Methods minBound :: Ordering # maxBound :: Ordering #
Enum Ordering	Since: base-2.1
Instance details Defined in GHC.Enum Methods succ :: Ordering -> Ordering # pred :: Ordering -> Ordering # toEnum :: Int -> Ordering # fromEnum :: Ordering -> Int # enumFrom :: Ordering -> [Ordering] # enumFromThen :: Ordering -> Ordering -> [Ordering] # enumFromTo :: Ordering -> Ordering -> [Ordering] # enumFromThenTo :: Ordering -> Ordering -> Ordering -> [Ordering] #
Eq Ordering
Instance details Defined in GHC.Classes Methods (==) :: Ordering -> Ordering -> Bool # (/=) :: Ordering -> Ordering -> Bool #
Ord Ordering
Instance details Defined in GHC.Classes Methods compare :: Ordering -> Ordering -> Ordering # (<) :: Ordering -> Ordering -> Bool # (<=) :: Ordering -> Ordering -> Bool # (>) :: Ordering -> Ordering -> Bool # (>=) :: Ordering -> Ordering -> Bool # max :: Ordering -> Ordering -> Ordering # min :: Ordering -> Ordering -> Ordering #
Read Ordering	Since: base-2.1
Instance details Defined in GHC.Read Methods readsPrec :: Int -> ReadS Ordering # readList :: ReadS [Ordering] # readPrec :: ReadPrec Ordering # readListPrec :: ReadPrec [Ordering] #
Show Ordering	Since: base-2.1
Instance details Defined in GHC.Show Methods showsPrec :: Int -> Ordering -> ShowS # show :: Ordering -> String # showList :: [Ordering] -> ShowS #
Generic Ordering	Since: base-4.6.0.0
Instance details Defined in GHC.Generics Associated Types type Rep Ordering :: Type -> Type # Methods from :: Ordering -> Rep Ordering x # to :: Rep Ordering x -> Ordering #
Semigroup Ordering	Since: base-4.9.0.0
Instance details Defined in GHC.Base Methods (<>) :: Ordering -> Ordering -> Ordering # sconcat :: NonEmpty Ordering -> Ordering # stimes :: Integral b => b -> Ordering -> Ordering #
Monoid Ordering	Since: base-2.1
Instance details Defined in GHC.Base Methods mempty :: Ordering # mappend :: Ordering -> Ordering -> Ordering # mconcat :: [Ordering] -> Ordering #
Hashable Ordering
Instance details Defined in Data.Hashable.Class Methods hashWithSalt :: Int -> Ordering -> Int # hash :: Ordering -> Int #
ToJSON Ordering
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: Ordering -> Value # toEncoding :: Ordering -> Encoding # toJSONList :: [Ordering] -> Value # toEncodingList :: [Ordering] -> Encoding #
FromJSON Ordering
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser Ordering # parseJSONList :: Value -> Parser [Ordering] #
Default Ordering
Instance details Defined in Data.Default.Class Methods def :: Ordering #
type Rep Ordering
Instance details Defined in GHC.Generics type Rep Ordering = D1 ('MetaData "Ordering" "GHC.Types" "ghc-prim" 'False) (C1 ('MetaCons "LT" 'PrefixI 'False) (U1 :: Type -> Type) :+: (C1 ('MetaCons "EQ" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "GT" 'PrefixI 'False) (U1 :: Type -> Type)))

type Rational = Ratio Integer #

Arbitrary-precision rational numbers, represented as a ratio of two Integer values. A rational number may be constructed using the % operator.

data IO a #

A value of type IO a is a computation which, when performed, does some I/O before returning a value of type a.

There is really only one way to "perform" an I/O action: bind it to Main.main in your program. When your program is run, the I/O will be performed. It isn't possible to perform I/O from an arbitrary function, unless that function is itself in the IO monad and called at some point, directly or indirectly, from Main.main.

IO is a monad, so IO actions can be combined using either the do-notation or the >> and >>= operations from the Monad class.

Instances

Instances details

Monad IO	Since: base-2.1
Instance details Defined in GHC.Base Methods (>>=) :: IO a -> (a -> IO b) -> IO b # (>>) :: IO a -> IO b -> IO b # return :: a -> IO a #
Functor IO	Since: base-2.1
Instance details Defined in GHC.Base Methods fmap :: (a -> b) -> IO a -> IO b # (<$) :: a -> IO b -> IO a #
MonadFail IO	Since: base-4.9.0.0
Instance details Defined in Control.Monad.Fail Methods fail :: String -> IO a #
Applicative IO	Since: base-2.1
Instance details Defined in GHC.Base Methods pure :: a -> IO a # (<>) :: IO (a -> b) -> IO a -> IO b # liftA2 :: (a -> b -> c) -> IO a -> IO b -> IO c # (>) :: IO a -> IO b -> IO b # (<*) :: IO a -> IO b -> IO a #
Alternative IO	Since: base-4.9.0.0
Instance details Defined in GHC.Base Methods empty :: IO a # (<\|>) :: IO a -> IO a -> IO a # some :: IO a -> IO [a] # many :: IO a -> IO [a] #
MonadPlus IO	Since: base-4.9.0.0
Instance details Defined in GHC.Base Methods mzero :: IO a # mplus :: IO a -> IO a -> IO a #
MonadIO IO	Since: base-4.9.0.0
Instance details Defined in Control.Monad.IO.Class Methods liftIO :: IO a -> IO a #
PrimMonad IO
Instance details Defined in Basement.Monad Associated Types type PrimState IO # type PrimVar IO :: Type -> Type # Methods primitive :: (State# (PrimState IO) -> (# State# (PrimState IO), a #)) -> IO a # primThrow :: Exception e => e -> IO a # unPrimMonad :: IO a -> State# (PrimState IO) -> (# State# (PrimState IO), a #) # primVarNew :: a -> IO (PrimVar IO a) # primVarRead :: PrimVar IO a -> IO a # primVarWrite :: PrimVar IO a -> a -> IO () #
MonadUnliftIO IO
Instance details Defined in Control.Monad.IO.Unlift Methods withRunInIO :: ((forall a. IO a -> IO a) -> IO b) -> IO b #
PrimMonad IO
Instance details Defined in Control.Monad.Primitive Associated Types type PrimState IO # Methods primitive :: (State# (PrimState IO) -> (# State# (PrimState IO), a #)) -> IO a #
Example Expectation
Instance details Defined in Test.Hspec.Core.Example Associated Types type Arg Expectation # Methods evaluateExample :: Expectation -> Params -> (ActionWith (Arg Expectation) -> IO ()) -> ProgressCallback -> IO Result #
PrimBase IO
Instance details Defined in Control.Monad.Primitive Methods internal :: IO a -> State# (PrimState IO) -> (# State# (PrimState IO), a #) #
Quasi IO
Instance details Defined in Language.Haskell.TH.Syntax Methods qNewName :: String -> IO Name # qReport :: Bool -> String -> IO () # qRecover :: IO a -> IO a -> IO a # qLookupName :: Bool -> String -> IO (Maybe Name) # qReify :: Name -> IO Info # qReifyFixity :: Name -> IO (Maybe Fixity) # qReifyType :: Name -> IO Type # qReifyInstances :: Name -> [Type] -> IO [Dec] # qReifyRoles :: Name -> IO [Role] # qReifyAnnotations :: Data a => AnnLookup -> IO [a] # qReifyModule :: Module -> IO ModuleInfo # qReifyConStrictness :: Name -> IO [DecidedStrictness] # qLocation :: IO Loc # qRunIO :: IO a -> IO a # qAddDependentFile :: FilePath -> IO () # qAddTempFile :: String -> IO FilePath # qAddTopDecls :: [Dec] -> IO () # qAddForeignFilePath :: ForeignSrcLang -> String -> IO () # qAddModFinalizer :: Q () -> IO () # qAddCorePlugin :: String -> IO () # qGetQ :: Typeable a => IO (Maybe a) # qPutQ :: Typeable a => a -> IO () # qIsExtEnabled :: Extension -> IO Bool # qExtsEnabled :: IO [Extension] #
MonadBaseControl IO IO
Instance details Defined in Control.Monad.Trans.Control Associated Types type StM IO a # Methods liftBaseWith :: (RunInBase IO IO -> IO a) -> IO a # restoreM :: StM IO a -> IO a #
Semigroup a => Semigroup (IO a)	Since: base-4.10.0.0
Instance details Defined in GHC.Base Methods (<>) :: IO a -> IO a -> IO a # sconcat :: NonEmpty (IO a) -> IO a # stimes :: Integral b => b -> IO a -> IO a #
Monoid a => Monoid (IO a)	Since: base-4.9.0.0
Instance details Defined in GHC.Base Methods mempty :: IO a # mappend :: IO a -> IO a -> IO a # mconcat :: [IO a] -> IO a #
a ~ () => PrintfType (IO a)	Since: base-4.7.0.0
Instance details Defined in Text.Printf Methods spr :: String -> [UPrintf] -> IO a
a ~ () => HPrintfType (IO a)	Since: base-4.7.0.0
Instance details Defined in Text.Printf Methods hspr :: Handle -> String -> [UPrintf] -> IO a
Default a => Default (IO a)
Instance details Defined in Data.Default.Class Methods def :: IO a #
AssertionPredicable t => AssertionPredicable (IO t)
Instance details Defined in Test.Tasty.HUnit.Orig Methods assertionPredicate :: IO t -> IO Bool #
Assertable t => Assertable (IO t)
Instance details Defined in Test.Tasty.HUnit.Orig Methods assert :: IO t -> Assertion #
MonoFunctor (IO a)
Instance details Defined in Data.MonoTraversable Methods omap :: (Element (IO a) -> Element (IO a)) -> IO a -> IO a #
MonoPointed (IO a)
Instance details Defined in Data.MonoTraversable Methods opoint :: Element (IO a) -> IO a #
Run (InputT IO) Haskeline
Instance details Defined in System.Console.Wizard.Haskeline Methods runAlgebra :: Haskeline (InputT IO v) -> InputT IO v #
Run (InputT IO) WithSettings
Instance details Defined in System.Console.Wizard.Haskeline Methods runAlgebra :: WithSettings (InputT IO v) -> InputT IO v #
Example (a -> Expectation)
Instance details Defined in Test.Hspec.Core.Example Associated Types type Arg (a -> Expectation) # Methods evaluateExample :: (a -> Expectation) -> Params -> (ActionWith (Arg (a -> Expectation)) -> IO ()) -> ProgressCallback -> IO Result #
ToFlushBuilder builder => ToContent (ConduitT () builder (ResourceT IO) ())
Instance details Defined in Yesod.Core.Content Methods toContent :: ConduitT () builder (ResourceT IO) () -> Content #
ToFlushBuilder builder => ToContent (SealedConduitT () builder (ResourceT IO) ())
Instance details Defined in Yesod.Core.Content Methods toContent :: SealedConduitT () builder (ResourceT IO) () -> Content #
ToFlushBuilder builder => ToContent (Pipe () () builder () (ResourceT IO) ())
Instance details Defined in Yesod.Core.Content Methods toContent :: Pipe () () builder () (ResourceT IO) () -> Content #
type PrimVar IO
Instance details Defined in Basement.Monad type PrimVar IO = IORef
type PrimState IO
Instance details Defined in Basement.Monad type PrimState IO = RealWorld
type PrimState IO
Instance details Defined in Control.Monad.Primitive type PrimState IO = RealWorld
type Arg Expectation
Instance details Defined in Test.Hspec.Core.Example type Arg Expectation = ()
type StM IO a
Instance details Defined in Control.Monad.Trans.Control type StM IO a = a
type Element (IO a)
Instance details Defined in Data.MonoTraversable type Element (IO a) = a
type Arg (a -> Expectation)
Instance details Defined in Test.Hspec.Core.Example type Arg (a -> Expectation) = a

data Word #

A Word is an unsigned integral type, with the same size as Int.

Instances

Instances details

Bounded Word	Since: base-2.1
Instance details Defined in GHC.Enum Methods minBound :: Word # maxBound :: Word #
Enum Word	Since: base-2.1
Instance details Defined in GHC.Enum Methods succ :: Word -> Word # pred :: Word -> Word # toEnum :: Int -> Word # fromEnum :: Word -> Int # enumFrom :: Word -> [Word] # enumFromThen :: Word -> Word -> [Word] # enumFromTo :: Word -> Word -> [Word] # enumFromThenTo :: Word -> Word -> Word -> [Word] #
Eq Word
Instance details Defined in GHC.Classes Methods (==) :: Word -> Word -> Bool # (/=) :: Word -> Word -> Bool #
Integral Word	Since: base-2.1
Instance details Defined in GHC.Real Methods quot :: Word -> Word -> Word # rem :: Word -> Word -> Word # div :: Word -> Word -> Word # mod :: Word -> Word -> Word # quotRem :: Word -> Word -> (Word, Word) # divMod :: Word -> Word -> (Word, Word) # toInteger :: Word -> Integer #
Num Word	Since: base-2.1
Instance details Defined in GHC.Num Methods (+) :: Word -> Word -> Word # (-) :: Word -> Word -> Word # (*) :: Word -> Word -> Word # negate :: Word -> Word # abs :: Word -> Word # signum :: Word -> Word # fromInteger :: Integer -> Word #
Ord Word
Instance details Defined in GHC.Classes Methods compare :: Word -> Word -> Ordering # (<) :: Word -> Word -> Bool # (<=) :: Word -> Word -> Bool # (>) :: Word -> Word -> Bool # (>=) :: Word -> Word -> Bool # max :: Word -> Word -> Word # min :: Word -> Word -> Word #
Read Word	Since: base-4.5.0.0
Instance details Defined in GHC.Read Methods readsPrec :: Int -> ReadS Word # readList :: ReadS [Word] # readPrec :: ReadPrec Word # readListPrec :: ReadPrec [Word] #
Real Word	Since: base-2.1
Instance details Defined in GHC.Real Methods toRational :: Word -> Rational #
Show Word	Since: base-2.1
Instance details Defined in GHC.Show Methods showsPrec :: Int -> Word -> ShowS # show :: Word -> String # showList :: [Word] -> ShowS #
Hashable Word
Instance details Defined in Data.Hashable.Class Methods hashWithSalt :: Int -> Word -> Int # hash :: Word -> Int #
ToJSON Word
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: Word -> Value # toEncoding :: Word -> Encoding # toJSONList :: [Word] -> Value # toEncodingList :: [Word] -> Encoding #
ToJSONKey Word
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSONKey :: ToJSONKeyFunction Word # toJSONKeyList :: ToJSONKeyFunction [Word] #
FromJSON Word
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser Word # parseJSONList :: Value -> Parser [Word] #
FromJSONKey Word
Instance details Defined in Data.Aeson.Types.FromJSON Methods fromJSONKey :: FromJSONKeyFunction Word # fromJSONKeyList :: FromJSONKeyFunction [Word] #
PrintfArg Word	Since: base-2.1
Instance details Defined in Text.Printf Methods formatArg :: Word -> FieldFormatter # parseFormat :: Word -> ModifierParser #
Storable Word	Since: base-2.1
Instance details Defined in Foreign.Storable Methods sizeOf :: Word -> Int # alignment :: Word -> Int # peekElemOff :: Ptr Word -> Int -> IO Word # pokeElemOff :: Ptr Word -> Int -> Word -> IO () # peekByteOff :: Ptr b -> Int -> IO Word # pokeByteOff :: Ptr b -> Int -> Word -> IO () # peek :: Ptr Word -> IO Word # poke :: Ptr Word -> Word -> IO () #
PrimType Word
Instance details Defined in Basement.PrimType Associated Types type PrimSize Word :: Nat # Methods primSizeInBytes :: Proxy Word -> CountOf Word8 # primShiftToBytes :: Proxy Word -> Int # primBaUIndex :: ByteArray# -> Offset Word -> Word # primMbaURead :: PrimMonad prim => MutableByteArray# (PrimState prim) -> Offset Word -> prim Word # primMbaUWrite :: PrimMonad prim => MutableByteArray# (PrimState prim) -> Offset Word -> Word -> prim () # primAddrIndex :: Addr# -> Offset Word -> Word # primAddrRead :: PrimMonad prim => Addr# -> Offset Word -> prim Word # primAddrWrite :: PrimMonad prim => Addr# -> Offset Word -> Word -> prim () #
PrimMemoryComparable Word
Instance details Defined in Basement.PrimType
Subtractive Word
Instance details Defined in Basement.Numerical.Subtractive Associated Types type Difference Word # Methods (-) :: Word -> Word -> Difference Word #
ToValue Word
Instance details Defined in Text.Blaze Methods toValue :: Word -> AttributeValue # preEscapedToValue :: Word -> AttributeValue #
ToMarkup Word
Instance details Defined in Text.Blaze Methods toMarkup :: Word -> Markup # preEscapedToMarkup :: Word -> Markup #
Default Word
Instance details Defined in Data.Default.Class Methods def :: Word #
ToLogStr Word	Since: fast-logger-2.4.14
Instance details Defined in System.Log.FastLogger.LogStr Methods toLogStr :: Word -> LogStr #
PathPiece Word
Instance details Defined in Web.PathPieces Methods fromPathPiece :: Text -> Maybe Word # toPathPiece :: Word -> Text #
PersistField Word
Instance details Defined in Database.Persist.Class.PersistField Methods toPersistValue :: Word -> PersistValue # fromPersistValue :: PersistValue -> Either Text Word #
Pretty Word
Instance details Defined in Prettyprinter.Internal Methods pretty :: Word -> Doc ann # prettyList :: [Word] -> Doc ann #
Prim Word
Instance details Defined in Data.Primitive.Types Methods sizeOf# :: Word -> Int# # alignment# :: Word -> Int# # indexByteArray# :: ByteArray# -> Int# -> Word # readByteArray# :: MutableByteArray# s -> Int# -> State# s -> (# State# s, Word #) # writeByteArray# :: MutableByteArray# s -> Int# -> Word -> State# s -> State# s # setByteArray# :: MutableByteArray# s -> Int# -> Int# -> Word -> State# s -> State# s # indexOffAddr# :: Addr# -> Int# -> Word # readOffAddr# :: Addr# -> Int# -> State# s -> (# State# s, Word #) # writeOffAddr# :: Addr# -> Int# -> Word -> State# s -> State# s # setOffAddr# :: Addr# -> Int# -> Int# -> Word -> State# s -> State# s #
Uniform Word
Instance details Defined in System.Random.Internal Methods uniformM :: StatefulGen g m => g -> m Word #
UniformRange Word
Instance details Defined in System.Random.Internal Methods uniformRM :: StatefulGen g m => (Word, Word) -> g -> m Word #
Unbox Word
Instance details Defined in Data.Vector.Unboxed.Base
Lift Word
Instance details Defined in Language.Haskell.TH.Syntax Methods lift :: Word -> Q Exp # liftTyped :: Word -> Q (TExp Word) #
Vector Vector Word
Instance details Defined in Data.Vector.Unboxed.Base Methods basicUnsafeFreeze :: PrimMonad m => Mutable Vector (PrimState m) Word -> m (Vector Word) # basicUnsafeThaw :: PrimMonad m => Vector Word -> m (Mutable Vector (PrimState m) Word) # basicLength :: Vector Word -> Int # basicUnsafeSlice :: Int -> Int -> Vector Word -> Vector Word # basicUnsafeIndexM :: Monad m => Vector Word -> Int -> m Word # basicUnsafeCopy :: PrimMonad m => Mutable Vector (PrimState m) Word -> Vector Word -> m () # elemseq :: Vector Word -> Word -> b -> b #
MVector MVector Word
Instance details Defined in Data.Vector.Unboxed.Base Methods basicLength :: MVector s Word -> Int # basicUnsafeSlice :: Int -> Int -> MVector s Word -> MVector s Word # basicOverlaps :: MVector s Word -> MVector s Word -> Bool # basicUnsafeNew :: PrimMonad m => Int -> m (MVector (PrimState m) Word) # basicInitialize :: PrimMonad m => MVector (PrimState m) Word -> m () # basicUnsafeReplicate :: PrimMonad m => Int -> Word -> m (MVector (PrimState m) Word) # basicUnsafeRead :: PrimMonad m => MVector (PrimState m) Word -> Int -> m Word # basicUnsafeWrite :: PrimMonad m => MVector (PrimState m) Word -> Int -> Word -> m () # basicClear :: PrimMonad m => MVector (PrimState m) Word -> m () # basicSet :: PrimMonad m => MVector (PrimState m) Word -> Word -> m () # basicUnsafeCopy :: PrimMonad m => MVector (PrimState m) Word -> MVector (PrimState m) Word -> m () # basicUnsafeMove :: PrimMonad m => MVector (PrimState m) Word -> MVector (PrimState m) Word -> m () # basicUnsafeGrow :: PrimMonad m => MVector (PrimState m) Word -> Int -> m (MVector (PrimState m) Word) #
Generic1 (URec Word :: k -> Type)	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Associated Types type Rep1 (URec Word) :: k -> Type # Methods from1 :: forall (a :: k0). URec Word a -> Rep1 (URec Word) a # to1 :: forall (a :: k0). Rep1 (URec Word) a -> URec Word a #
Foldable (UWord :: Type -> Type)	Since: base-4.9.0.0
Instance details Defined in Data.Foldable Methods fold :: Monoid m => UWord m -> m # foldMap :: Monoid m => (a -> m) -> UWord a -> m # foldMap' :: Monoid m => (a -> m) -> UWord a -> m # foldr :: (a -> b -> b) -> b -> UWord a -> b # foldr' :: (a -> b -> b) -> b -> UWord a -> b # foldl :: (b -> a -> b) -> b -> UWord a -> b # foldl' :: (b -> a -> b) -> b -> UWord a -> b # foldr1 :: (a -> a -> a) -> UWord a -> a # foldl1 :: (a -> a -> a) -> UWord a -> a # toList :: UWord a -> [a] # null :: UWord a -> Bool # length :: UWord a -> Int # elem :: Eq a => a -> UWord a -> Bool # maximum :: Ord a => UWord a -> a # minimum :: Ord a => UWord a -> a # sum :: Num a => UWord a -> a # product :: Num a => UWord a -> a #
Traversable (UWord :: Type -> Type)	Since: base-4.9.0.0
Instance details Defined in Data.Traversable Methods traverse :: Applicative f => (a -> f b) -> UWord a -> f (UWord b) # sequenceA :: Applicative f => UWord (f a) -> f (UWord a) # mapM :: Monad m => (a -> m b) -> UWord a -> m (UWord b) # sequence :: Monad m => UWord (m a) -> m (UWord a) #
Functor (URec Word :: Type -> Type)	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Methods fmap :: (a -> b) -> URec Word a -> URec Word b # (<$) :: a -> URec Word b -> URec Word a #
Eq (URec Word p)	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Methods (==) :: URec Word p -> URec Word p -> Bool # (/=) :: URec Word p -> URec Word p -> Bool #
Ord (URec Word p)	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Methods compare :: URec Word p -> URec Word p -> Ordering # (<) :: URec Word p -> URec Word p -> Bool # (<=) :: URec Word p -> URec Word p -> Bool # (>) :: URec Word p -> URec Word p -> Bool # (>=) :: URec Word p -> URec Word p -> Bool # max :: URec Word p -> URec Word p -> URec Word p # min :: URec Word p -> URec Word p -> URec Word p #
Show (URec Word p)	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Methods showsPrec :: Int -> URec Word p -> ShowS # show :: URec Word p -> String # showList :: [URec Word p] -> ShowS #
Generic (URec Word p)	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Associated Types type Rep (URec Word p) :: Type -> Type # Methods from :: URec Word p -> Rep (URec Word p) x # to :: Rep (URec Word p) x -> URec Word p #
type PrimSize Word
Instance details Defined in Basement.PrimType type PrimSize Word = 8
type Difference Word
Instance details Defined in Basement.Numerical.Subtractive type Difference Word = Word
type NatNumMaxBound Word
Instance details Defined in Basement.Nat type NatNumMaxBound Word = NatNumMaxBound Word64
newtype Vector Word
Instance details Defined in Data.Vector.Unboxed.Base newtype Vector Word = V_Word (Vector Word)
data URec Word (p :: k)	Used for marking occurrences of `Word#` Since: base-4.9.0.0
Instance details Defined in GHC.Generics data URec Word (p :: k) = UWord { uWord# :: Word# }
newtype MVector s Word
Instance details Defined in Data.Vector.Unboxed.Base newtype MVector s Word = MV_Word (MVector s Word)
type Rep1 (URec Word :: k -> Type)
Instance details Defined in GHC.Generics type Rep1 (URec Word :: k -> Type) = D1 ('MetaData "URec" "GHC.Generics" "base" 'False) (C1 ('MetaCons "UWord" 'PrefixI 'True) (S1 ('MetaSel ('Just "uWord#") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (UWord :: k -> Type)))
type Rep (URec Word p)
Instance details Defined in GHC.Generics type Rep (URec Word p) = D1 ('MetaData "URec" "GHC.Generics" "base" 'False) (C1 ('MetaCons "UWord" 'PrefixI 'True) (S1 ('MetaSel ('Just "uWord#") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (UWord :: Type -> Type)))

data Either a b #

The Either type represents values with two possibilities: a value of type Either a b is either Left a or Right b.

The Either type is sometimes used to represent a value which is either correct or an error; by convention, the Left constructor is used to hold an error value and the Right constructor is used to hold a correct value (mnemonic: "right" also means "correct").

Examples

Expand

The type Either String Int is the type of values which can be either a String or an Int. The Left constructor can be used only on Strings, and the Right constructor can be used only on Ints:

>>> let s = Left "foo" :: Either String Int
>>> s
Left "foo"
>>> let n = Right 3 :: Either String Int
>>> n
Right 3
>>> :type s
s :: Either String Int
>>> :type n
n :: Either String Int

The fmap from our Functor instance will ignore Left values, but will apply the supplied function to values contained in a Right:

>>> let s = Left "foo" :: Either String Int
>>> let n = Right 3 :: Either String Int
>>> fmap (*2) s
Left "foo"
>>> fmap (*2) n
Right 6

The Monad instance for Either allows us to chain together multiple actions which may fail, and fail overall if any of the individual steps failed. First we'll write a function that can either parse an Int from a Char, or fail.

>>> import Data.Char ( digitToInt, isDigit )
>>> :{
    let parseEither :: Char -> Either String Int
        parseEither c
          | isDigit c = Right (digitToInt c)
          | otherwise = Left "parse error"
>>> :}

The following should work, since both '1' and '2' can be parsed as Ints.

>>> :{
    let parseMultiple :: Either String Int
        parseMultiple = do
          x <- parseEither '1'
          y <- parseEither '2'
          return (x + y)
>>> :}

>>> parseMultiple
Right 3

But the following should fail overall, since the first operation where we attempt to parse 'm' as an Int will fail:

>>> :{
    let parseMultiple :: Either String Int
        parseMultiple = do
          x <- parseEither 'm'
          y <- parseEither '2'
          return (x + y)
>>> :}

>>> parseMultiple
Left "parse error"

Constructors

Left a
Right b

Instances

Instances details

ToJSON2 Either
Instance details Defined in Data.Aeson.Types.ToJSON Methods liftToJSON2 :: (a -> Value) -> ([a] -> Value) -> (b -> Value) -> ([b] -> Value) -> Either a b -> Value # liftToJSONList2 :: (a -> Value) -> ([a] -> Value) -> (b -> Value) -> ([b] -> Value) -> [Either a b] -> Value # liftToEncoding2 :: (a -> Encoding) -> ([a] -> Encoding) -> (b -> Encoding) -> ([b] -> Encoding) -> Either a b -> Encoding # liftToEncodingList2 :: (a -> Encoding) -> ([a] -> Encoding) -> (b -> Encoding) -> ([b] -> Encoding) -> [Either a b] -> Encoding #
FromJSON2 Either
Instance details Defined in Data.Aeson.Types.FromJSON Methods liftParseJSON2 :: (Value -> Parser a) -> (Value -> Parser [a]) -> (Value -> Parser b) -> (Value -> Parser [b]) -> Value -> Parser (Either a b) # liftParseJSONList2 :: (Value -> Parser a) -> (Value -> Parser [a]) -> (Value -> Parser b) -> (Value -> Parser [b]) -> Value -> Parser [Either a b] #
Bifunctor Either	Since: base-4.8.0.0
Instance details Defined in Data.Bifunctor Methods bimap :: (a -> b) -> (c -> d) -> Either a c -> Either b d # first :: (a -> b) -> Either a c -> Either b c # second :: (b -> c) -> Either a b -> Either a c #
Bifoldable Either	Since: base-4.10.0.0
Instance details Defined in Data.Bifoldable Methods bifold :: Monoid m => Either m m -> m # bifoldMap :: Monoid m => (a -> m) -> (b -> m) -> Either a b -> m # bifoldr :: (a -> c -> c) -> (b -> c -> c) -> c -> Either a b -> c # bifoldl :: (c -> a -> c) -> (c -> b -> c) -> c -> Either a b -> c #
Eq2 Either	Since: base-4.9.0.0
Instance details Defined in Data.Functor.Classes Methods liftEq2 :: (a -> b -> Bool) -> (c -> d -> Bool) -> Either a c -> Either b d -> Bool #
Ord2 Either	Since: base-4.9.0.0
Instance details Defined in Data.Functor.Classes Methods liftCompare2 :: (a -> b -> Ordering) -> (c -> d -> Ordering) -> Either a c -> Either b d -> Ordering #
Read2 Either	Since: base-4.9.0.0
Instance details Defined in Data.Functor.Classes Methods liftReadsPrec2 :: (Int -> ReadS a) -> ReadS [a] -> (Int -> ReadS b) -> ReadS [b] -> Int -> ReadS (Either a b) # liftReadList2 :: (Int -> ReadS a) -> ReadS [a] -> (Int -> ReadS b) -> ReadS [b] -> ReadS [Either a b] # liftReadPrec2 :: ReadPrec a -> ReadPrec [a] -> ReadPrec b -> ReadPrec [b] -> ReadPrec (Either a b) # liftReadListPrec2 :: ReadPrec a -> ReadPrec [a] -> ReadPrec b -> ReadPrec [b] -> ReadPrec [Either a b] #
Show2 Either	Since: base-4.9.0.0
Instance details Defined in Data.Functor.Classes Methods liftShowsPrec2 :: (Int -> a -> ShowS) -> ([a] -> ShowS) -> (Int -> b -> ShowS) -> ([b] -> ShowS) -> Int -> Either a b -> ShowS # liftShowList2 :: (Int -> a -> ShowS) -> ([a] -> ShowS) -> (Int -> b -> ShowS) -> ([b] -> ShowS) -> [Either a b] -> ShowS #
Hashable2 Either
Instance details Defined in Data.Hashable.Class Methods liftHashWithSalt2 :: (Int -> a -> Int) -> (Int -> b -> Int) -> Int -> Either a b -> Int #
(Lift a, Lift b) => Lift (Either a b :: Type)
Instance details Defined in Language.Haskell.TH.Syntax Methods lift :: Either a b -> Q Exp # liftTyped :: Either a b -> Q (TExp (Either a b)) #
Monad (Either e)	Since: base-4.4.0.0
Instance details Defined in Data.Either Methods (>>=) :: Either e a -> (a -> Either e b) -> Either e b # (>>) :: Either e a -> Either e b -> Either e b # return :: a -> Either e a #
Functor (Either a)	Since: base-3.0
Instance details Defined in Data.Either Methods fmap :: (a0 -> b) -> Either a a0 -> Either a b # (<$) :: a0 -> Either a b -> Either a a0 #
Applicative (Either e)	Since: base-3.0
Instance details Defined in Data.Either Methods pure :: a -> Either e a # (<>) :: Either e (a -> b) -> Either e a -> Either e b # liftA2 :: (a -> b -> c) -> Either e a -> Either e b -> Either e c # (>) :: Either e a -> Either e b -> Either e b # (<*) :: Either e a -> Either e b -> Either e a #
Foldable (Either a)	Since: base-4.7.0.0
Instance details Defined in Data.Foldable Methods fold :: Monoid m => Either a m -> m # foldMap :: Monoid m => (a0 -> m) -> Either a a0 -> m # foldMap' :: Monoid m => (a0 -> m) -> Either a a0 -> m # foldr :: (a0 -> b -> b) -> b -> Either a a0 -> b # foldr' :: (a0 -> b -> b) -> b -> Either a a0 -> b # foldl :: (b -> a0 -> b) -> b -> Either a a0 -> b # foldl' :: (b -> a0 -> b) -> b -> Either a a0 -> b # foldr1 :: (a0 -> a0 -> a0) -> Either a a0 -> a0 # foldl1 :: (a0 -> a0 -> a0) -> Either a a0 -> a0 # toList :: Either a a0 -> [a0] # null :: Either a a0 -> Bool # length :: Either a a0 -> Int # elem :: Eq a0 => a0 -> Either a a0 -> Bool # maximum :: Ord a0 => Either a a0 -> a0 # minimum :: Ord a0 => Either a a0 -> a0 # sum :: Num a0 => Either a a0 -> a0 # product :: Num a0 => Either a a0 -> a0 #
Traversable (Either a)	Since: base-4.7.0.0
Instance details Defined in Data.Traversable Methods traverse :: Applicative f => (a0 -> f b) -> Either a a0 -> f (Either a b) # sequenceA :: Applicative f => Either a (f a0) -> f (Either a a0) # mapM :: Monad m => (a0 -> m b) -> Either a a0 -> m (Either a b) # sequence :: Monad m => Either a (m a0) -> m (Either a a0) #
ToJSON a => ToJSON1 (Either a)
Instance details Defined in Data.Aeson.Types.ToJSON Methods liftToJSON :: (a0 -> Value) -> ([a0] -> Value) -> Either a a0 -> Value # liftToJSONList :: (a0 -> Value) -> ([a0] -> Value) -> [Either a a0] -> Value # liftToEncoding :: (a0 -> Encoding) -> ([a0] -> Encoding) -> Either a a0 -> Encoding # liftToEncodingList :: (a0 -> Encoding) -> ([a0] -> Encoding) -> [Either a a0] -> Encoding #
FromJSON a => FromJSON1 (Either a)
Instance details Defined in Data.Aeson.Types.FromJSON Methods liftParseJSON :: (Value -> Parser a0) -> (Value -> Parser [a0]) -> Value -> Parser (Either a a0) # liftParseJSONList :: (Value -> Parser a0) -> (Value -> Parser [a0]) -> Value -> Parser [Either a a0] #
Eq a => Eq1 (Either a)	Since: base-4.9.0.0
Instance details Defined in Data.Functor.Classes Methods liftEq :: (a0 -> b -> Bool) -> Either a a0 -> Either a b -> Bool #
Ord a => Ord1 (Either a)	Since: base-4.9.0.0
Instance details Defined in Data.Functor.Classes Methods liftCompare :: (a0 -> b -> Ordering) -> Either a a0 -> Either a b -> Ordering #
Read a => Read1 (Either a)	Since: base-4.9.0.0
Instance details Defined in Data.Functor.Classes Methods liftReadsPrec :: (Int -> ReadS a0) -> ReadS [a0] -> Int -> ReadS (Either a a0) # liftReadList :: (Int -> ReadS a0) -> ReadS [a0] -> ReadS [Either a a0] # liftReadPrec :: ReadPrec a0 -> ReadPrec [a0] -> ReadPrec (Either a a0) # liftReadListPrec :: ReadPrec a0 -> ReadPrec [a0] -> ReadPrec [Either a a0] #
Show a => Show1 (Either a)	Since: base-4.9.0.0
Instance details Defined in Data.Functor.Classes Methods liftShowsPrec :: (Int -> a0 -> ShowS) -> ([a0] -> ShowS) -> Int -> Either a a0 -> ShowS # liftShowList :: (Int -> a0 -> ShowS) -> ([a0] -> ShowS) -> [Either a a0] -> ShowS #
MonadFailure (Either a)
Instance details Defined in Basement.Monad Associated Types type Failure (Either a) # Methods mFail :: Failure (Either a) -> Either a () #
Hashable a => Hashable1 (Either a)
Instance details Defined in Data.Hashable.Class Methods liftHashWithSalt :: (Int -> a0 -> Int) -> Int -> Either a a0 -> Int #
e ~ a => Reportable (Either a) e
Instance details Defined in Hledger.Reports.ReportOptions Methods report :: a0 -> Either a (Either e a0) -> Either a a0
Generic1 (Either a :: Type -> Type)	Since: base-4.6.0.0
Instance details Defined in GHC.Generics Associated Types type Rep1 (Either a) :: k -> Type # Methods from1 :: forall (a0 :: k). Either a a0 -> Rep1 (Either a) a0 # to1 :: forall (a0 :: k). Rep1 (Either a) a0 -> Either a a0 #
MonadBaseControl (Either e) (Either e)
Instance details Defined in Control.Monad.Trans.Control Associated Types type StM (Either e) a # Methods liftBaseWith :: (RunInBase (Either e) (Either e) -> Either e a) -> Either e a # restoreM :: StM (Either e) a -> Either e a #
(Eq a, Eq b) => Eq (Either a b)	Since: base-2.1
Instance details Defined in Data.Either Methods (==) :: Either a b -> Either a b -> Bool # (/=) :: Either a b -> Either a b -> Bool #
(Ord a, Ord b) => Ord (Either a b)	Since: base-2.1
Instance details Defined in Data.Either Methods compare :: Either a b -> Either a b -> Ordering # (<) :: Either a b -> Either a b -> Bool # (<=) :: Either a b -> Either a b -> Bool # (>) :: Either a b -> Either a b -> Bool # (>=) :: Either a b -> Either a b -> Bool # max :: Either a b -> Either a b -> Either a b # min :: Either a b -> Either a b -> Either a b #
(Read a, Read b) => Read (Either a b)	Since: base-3.0
Instance details Defined in Data.Either Methods readsPrec :: Int -> ReadS (Either a b) # readList :: ReadS [Either a b] # readPrec :: ReadPrec (Either a b) # readListPrec :: ReadPrec [Either a b] #
(Show a, Show b) => Show (Either a b)	Since: base-3.0
Instance details Defined in Data.Either Methods showsPrec :: Int -> Either a b -> ShowS # show :: Either a b -> String # showList :: [Either a b] -> ShowS #
Generic (Either a b)	Since: base-4.6.0.0
Instance details Defined in GHC.Generics Associated Types type Rep (Either a b) :: Type -> Type # Methods from :: Either a b -> Rep (Either a b) x # to :: Rep (Either a b) x -> Either a b #
Semigroup (Either a b)	Since: base-4.9.0.0
Instance details Defined in Data.Either Methods (<>) :: Either a b -> Either a b -> Either a b # sconcat :: NonEmpty (Either a b) -> Either a b # stimes :: Integral b0 => b0 -> Either a b -> Either a b #
(Hashable a, Hashable b) => Hashable (Either a b)
Instance details Defined in Data.Hashable.Class Methods hashWithSalt :: Int -> Either a b -> Int # hash :: Either a b -> Int #
(ToJSON a, ToJSON b) => ToJSON (Either a b)
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: Either a b -> Value # toEncoding :: Either a b -> Encoding # toJSONList :: [Either a b] -> Value # toEncodingList :: [Either a b] -> Encoding #
(FromJSON a, FromJSON b) => FromJSON (Either a b)
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser (Either a b) # parseJSONList :: Value -> Parser [Either a b] #
MonoFunctor (Either a b)
Instance details Defined in Data.MonoTraversable Methods omap :: (Element (Either a b) -> Element (Either a b)) -> Either a b -> Either a b #
MonoFoldable (Either a b)
Instance details Defined in Data.MonoTraversable Methods ofoldMap :: Monoid m => (Element (Either a b) -> m) -> Either a b -> m # ofoldr :: (Element (Either a b) -> b0 -> b0) -> b0 -> Either a b -> b0 # ofoldl' :: (a0 -> Element (Either a b) -> a0) -> a0 -> Either a b -> a0 # otoList :: Either a b -> [Element (Either a b)] # oall :: (Element (Either a b) -> Bool) -> Either a b -> Bool # oany :: (Element (Either a b) -> Bool) -> Either a b -> Bool # onull :: Either a b -> Bool # olength :: Either a b -> Int # olength64 :: Either a b -> Int64 # ocompareLength :: Integral i => Either a b -> i -> Ordering # otraverse_ :: Applicative f => (Element (Either a b) -> f b0) -> Either a b -> f () # ofor_ :: Applicative f => Either a b -> (Element (Either a b) -> f b0) -> f () # omapM_ :: Applicative m => (Element (Either a b) -> m ()) -> Either a b -> m () # oforM_ :: Applicative m => Either a b -> (Element (Either a b) -> m ()) -> m () # ofoldlM :: Monad m => (a0 -> Element (Either a b) -> m a0) -> a0 -> Either a b -> m a0 # ofoldMap1Ex :: Semigroup m => (Element (Either a b) -> m) -> Either a b -> m # ofoldr1Ex :: (Element (Either a b) -> Element (Either a b) -> Element (Either a b)) -> Either a b -> Element (Either a b) # ofoldl1Ex' :: (Element (Either a b) -> Element (Either a b) -> Element (Either a b)) -> Either a b -> Element (Either a b) # headEx :: Either a b -> Element (Either a b) # lastEx :: Either a b -> Element (Either a b) # unsafeHead :: Either a b -> Element (Either a b) # unsafeLast :: Either a b -> Element (Either a b) # maximumByEx :: (Element (Either a b) -> Element (Either a b) -> Ordering) -> Either a b -> Element (Either a b) # minimumByEx :: (Element (Either a b) -> Element (Either a b) -> Ordering) -> Either a b -> Element (Either a b) # oelem :: Element (Either a b) -> Either a b -> Bool # onotElem :: Element (Either a b) -> Either a b -> Bool #
MonoTraversable (Either a b)
Instance details Defined in Data.MonoTraversable Methods otraverse :: Applicative f => (Element (Either a b) -> f (Element (Either a b))) -> Either a b -> f (Either a b) # omapM :: Applicative m => (Element (Either a b) -> m (Element (Either a b))) -> Either a b -> m (Either a b) #
MonoPointed (Either a b)
Instance details Defined in Data.MonoTraversable Methods opoint :: Element (Either a b) -> Either a b #
(PersistConfig c1, PersistConfig c2, PersistConfigPool c1 ~ PersistConfigPool c2, PersistConfigBackend c1 ~ PersistConfigBackend c2) => PersistConfig (Either c1 c2)
Instance details Defined in Database.Persist.Class.PersistConfig Associated Types type PersistConfigBackend (Either c1 c2) :: (Type -> Type) -> Type -> Type # type PersistConfigPool (Either c1 c2) # Methods loadConfig :: Value -> Parser (Either c1 c2) # applyEnv :: Either c1 c2 -> IO (Either c1 c2) # createPoolConfig :: Either c1 c2 -> IO (PersistConfigPool (Either c1 c2)) # runPool :: MonadUnliftIO m => Either c1 c2 -> PersistConfigBackend (Either c1 c2) m a -> PersistConfigPool (Either c1 c2) -> m a #
(a ~ a', b ~ b') => Each (Either a a') (Either b b') a b	Since: microlens-0.4.11
Instance details Defined in Lens.Micro.Internal Methods each :: Traversal (Either a a') (Either b b') a b #
type Failure (Either a)
Instance details Defined in Basement.Monad type Failure (Either a) = a
type StM (Either e) a
Instance details Defined in Control.Monad.Trans.Control type StM (Either e) a = a
type Rep1 (Either a :: Type -> Type)
Instance details Defined in GHC.Generics type Rep1 (Either a :: Type -> Type) = D1 ('MetaData "Either" "Data.Either" "base" 'False) (C1 ('MetaCons "Left" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 a)) :+: C1 ('MetaCons "Right" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) Par1))
type Rep (Either a b)
Instance details Defined in GHC.Generics type Rep (Either a b) = D1 ('MetaData "Either" "Data.Either" "base" 'False) (C1 ('MetaCons "Left" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 a)) :+: C1 ('MetaCons "Right" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 b)))
type Element (Either a b)
Instance details Defined in Data.MonoTraversable type Element (Either a b) = b
type PersistConfigPool (Either c1 c2)
Instance details Defined in Database.Persist.Class.PersistConfig type PersistConfigPool (Either c1 c2) = PersistConfigPool c1
type PersistConfigBackend (Either c1 c2)
Instance details Defined in Database.Persist.Class.PersistConfig type PersistConfigBackend (Either c1 c2) = PersistConfigBackend c1

type FilePath = String #

File and directory names are values of type String, whose precise meaning is operating system dependent. Files can be opened, yielding a handle which can then be used to operate on the contents of that file.

error :: forall (r :: RuntimeRep) (a :: TYPE r). HasCallStack => [Char] -> a #

error stops execution and displays an error message.

type String = [Char] #

A String is a list of characters. String constants in Haskell are values of type String.

See Data.List for operations on lists.

type ShowS = String -> String #

The shows functions return a function that prepends the output String to an existing String. This allows constant-time concatenation of results using function composition.

data ByteString #

A space-efficient representation of a Word8 vector, supporting many efficient operations.

A ByteString contains 8-bit bytes, or by using the operations from Data.ByteString.Char8 it can be interpreted as containing 8-bit characters.

Instances

Instances details

Eq ByteString
Instance details Defined in Data.ByteString.Internal Methods (==) :: ByteString -> ByteString -> Bool # (/=) :: ByteString -> ByteString -> Bool #
Data ByteString
Instance details Defined in Data.ByteString.Internal Methods gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> ByteString -> c ByteString # gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c ByteString # toConstr :: ByteString -> Constr # dataTypeOf :: ByteString -> DataType # dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c ByteString) # dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c ByteString) # gmapT :: (forall b. Data b => b -> b) -> ByteString -> ByteString # gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> ByteString -> r # gmapQr :: forall r r'. (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> ByteString -> r # gmapQ :: (forall d. Data d => d -> u) -> ByteString -> [u] # gmapQi :: Int -> (forall d. Data d => d -> u) -> ByteString -> u # gmapM :: Monad m => (forall d. Data d => d -> m d) -> ByteString -> m ByteString # gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> ByteString -> m ByteString # gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> ByteString -> m ByteString #
Ord ByteString
Instance details Defined in Data.ByteString.Internal Methods compare :: ByteString -> ByteString -> Ordering # (<) :: ByteString -> ByteString -> Bool # (<=) :: ByteString -> ByteString -> Bool # (>) :: ByteString -> ByteString -> Bool # (>=) :: ByteString -> ByteString -> Bool # max :: ByteString -> ByteString -> ByteString # min :: ByteString -> ByteString -> ByteString #
Read ByteString
Instance details Defined in Data.ByteString.Internal Methods readsPrec :: Int -> ReadS ByteString # readList :: ReadS [ByteString] # readPrec :: ReadPrec ByteString # readListPrec :: ReadPrec [ByteString] #
Show ByteString
Instance details Defined in Data.ByteString.Internal Methods showsPrec :: Int -> ByteString -> ShowS # show :: ByteString -> String # showList :: [ByteString] -> ShowS #
IsString ByteString
Instance details Defined in Data.ByteString.Internal Methods fromString :: String -> ByteString #
Semigroup ByteString
Instance details Defined in Data.ByteString.Internal Methods (<>) :: ByteString -> ByteString -> ByteString # sconcat :: NonEmpty ByteString -> ByteString # stimes :: Integral b => b -> ByteString -> ByteString #
Monoid ByteString
Instance details Defined in Data.ByteString.Internal Methods mempty :: ByteString # mappend :: ByteString -> ByteString -> ByteString # mconcat :: [ByteString] -> ByteString #
Hashable ByteString
Instance details Defined in Data.Hashable.Class Methods hashWithSalt :: Int -> ByteString -> Int # hash :: ByteString -> Int #
Chunk ByteString
Instance details Defined in Data.Attoparsec.Internal.Types Associated Types type ChunkElem ByteString # Methods nullChunk :: ByteString -> Bool # pappendChunk :: State ByteString -> ByteString -> State ByteString # atBufferEnd :: ByteString -> State ByteString -> Pos # bufferElemAt :: ByteString -> Pos -> State ByteString -> Maybe (ChunkElem ByteString, Int) # chunkElemToChar :: ByteString -> ChunkElem ByteString -> Char #
FoldCase ByteString	Note that `foldCase` on `ByteStrings` is only guaranteed to be correct for ISO-8859-1 encoded strings!
Instance details Defined in Data.CaseInsensitive.Internal Methods foldCase :: ByteString -> ByteString # foldCaseList :: [ByteString] -> [ByteString]
NFData ByteString
Instance details Defined in Data.ByteString.Internal Methods rnf :: ByteString -> () #
ToLogStr ByteString
Instance details Defined in System.Log.FastLogger.LogStr Methods toLogStr :: ByteString -> LogStr #
Stream ByteString
Instance details Defined in Text.Megaparsec.Stream Associated Types type Token ByteString # type Tokens ByteString # Methods tokenToChunk :: Proxy ByteString -> Token ByteString -> Tokens ByteString # tokensToChunk :: Proxy ByteString -> [Token ByteString] -> Tokens ByteString # chunkToTokens :: Proxy ByteString -> Tokens ByteString -> [Token ByteString] # chunkLength :: Proxy ByteString -> Tokens ByteString -> Int # chunkEmpty :: Proxy ByteString -> Tokens ByteString -> Bool # take1_ :: ByteString -> Maybe (Token ByteString, ByteString) # takeN_ :: Int -> ByteString -> Maybe (Tokens ByteString, ByteString) # takeWhile_ :: (Token ByteString -> Bool) -> ByteString -> (Tokens ByteString, ByteString) #
VisualStream ByteString
Instance details Defined in Text.Megaparsec.Stream Methods showTokens :: Proxy ByteString -> NonEmpty (Token ByteString) -> String # tokensLength :: Proxy ByteString -> NonEmpty (Token ByteString) -> Int #
TraversableStream ByteString
Instance details Defined in Text.Megaparsec.Stream Methods reachOffset :: Int -> PosState ByteString -> (Maybe String, PosState ByteString) # reachOffsetNoLine :: Int -> PosState ByteString -> PosState ByteString #
SemiSequence ByteString
Instance details Defined in Data.Sequences Associated Types type Index ByteString # Methods intersperse :: Element ByteString -> ByteString -> ByteString # reverse :: ByteString -> ByteString # find :: (Element ByteString -> Bool) -> ByteString -> Maybe (Element ByteString) # sortBy :: (Element ByteString -> Element ByteString -> Ordering) -> ByteString -> ByteString # cons :: Element ByteString -> ByteString -> ByteString # snoc :: ByteString -> Element ByteString -> ByteString #
IsSequence ByteString
Instance details Defined in Data.Sequences Methods fromList :: [Element ByteString] -> ByteString # lengthIndex :: ByteString -> Index ByteString # break :: (Element ByteString -> Bool) -> ByteString -> (ByteString, ByteString) # span :: (Element ByteString -> Bool) -> ByteString -> (ByteString, ByteString) # dropWhile :: (Element ByteString -> Bool) -> ByteString -> ByteString # takeWhile :: (Element ByteString -> Bool) -> ByteString -> ByteString # splitAt :: Index ByteString -> ByteString -> (ByteString, ByteString) # unsafeSplitAt :: Index ByteString -> ByteString -> (ByteString, ByteString) # take :: Index ByteString -> ByteString -> ByteString # unsafeTake :: Index ByteString -> ByteString -> ByteString # drop :: Index ByteString -> ByteString -> ByteString # unsafeDrop :: Index ByteString -> ByteString -> ByteString # dropEnd :: Index ByteString -> ByteString -> ByteString # partition :: (Element ByteString -> Bool) -> ByteString -> (ByteString, ByteString) # uncons :: ByteString -> Maybe (Element ByteString, ByteString) # unsnoc :: ByteString -> Maybe (ByteString, Element ByteString) # filter :: (Element ByteString -> Bool) -> ByteString -> ByteString # filterM :: Monad m => (Element ByteString -> m Bool) -> ByteString -> m ByteString # replicate :: Index ByteString -> Element ByteString -> ByteString # replicateM :: Monad m => Index ByteString -> m (Element ByteString) -> m ByteString # groupBy :: (Element ByteString -> Element ByteString -> Bool) -> ByteString -> [ByteString] # groupAllOn :: Eq b => (Element ByteString -> b) -> ByteString -> [ByteString] # subsequences :: ByteString -> [ByteString] # permutations :: ByteString -> [ByteString] # tailEx :: ByteString -> ByteString # tailMay :: ByteString -> Maybe ByteString # initEx :: ByteString -> ByteString # initMay :: ByteString -> Maybe ByteString # unsafeTail :: ByteString -> ByteString # unsafeInit :: ByteString -> ByteString # index :: ByteString -> Index ByteString -> Maybe (Element ByteString) # indexEx :: ByteString -> Index ByteString -> Element ByteString # unsafeIndex :: ByteString -> Index ByteString -> Element ByteString # splitWhen :: (Element ByteString -> Bool) -> ByteString -> [ByteString] #
MonoFunctor ByteString
Instance details Defined in Data.MonoTraversable Methods omap :: (Element ByteString -> Element ByteString) -> ByteString -> ByteString #
MonoFoldable ByteString
Instance details Defined in Data.MonoTraversable Methods ofoldMap :: Monoid m => (Element ByteString -> m) -> ByteString -> m # ofoldr :: (Element ByteString -> b -> b) -> b -> ByteString -> b # ofoldl' :: (a -> Element ByteString -> a) -> a -> ByteString -> a # otoList :: ByteString -> [Element ByteString] # oall :: (Element ByteString -> Bool) -> ByteString -> Bool # oany :: (Element ByteString -> Bool) -> ByteString -> Bool # onull :: ByteString -> Bool # olength :: ByteString -> Int # olength64 :: ByteString -> Int64 # ocompareLength :: Integral i => ByteString -> i -> Ordering # otraverse_ :: Applicative f => (Element ByteString -> f b) -> ByteString -> f () # ofor_ :: Applicative f => ByteString -> (Element ByteString -> f b) -> f () # omapM_ :: Applicative m => (Element ByteString -> m ()) -> ByteString -> m () # oforM_ :: Applicative m => ByteString -> (Element ByteString -> m ()) -> m () # ofoldlM :: Monad m => (a -> Element ByteString -> m a) -> a -> ByteString -> m a # ofoldMap1Ex :: Semigroup m => (Element ByteString -> m) -> ByteString -> m # ofoldr1Ex :: (Element ByteString -> Element ByteString -> Element ByteString) -> ByteString -> Element ByteString # ofoldl1Ex' :: (Element ByteString -> Element ByteString -> Element ByteString) -> ByteString -> Element ByteString # headEx :: ByteString -> Element ByteString # lastEx :: ByteString -> Element ByteString # unsafeHead :: ByteString -> Element ByteString # unsafeLast :: ByteString -> Element ByteString # maximumByEx :: (Element ByteString -> Element ByteString -> Ordering) -> ByteString -> Element ByteString # minimumByEx :: (Element ByteString -> Element ByteString -> Ordering) -> ByteString -> Element ByteString # oelem :: Element ByteString -> ByteString -> Bool # onotElem :: Element ByteString -> ByteString -> Bool #
MonoTraversable ByteString
Instance details Defined in Data.MonoTraversable Methods otraverse :: Applicative f => (Element ByteString -> f (Element ByteString)) -> ByteString -> f ByteString # omapM :: Applicative m => (Element ByteString -> m (Element ByteString)) -> ByteString -> m ByteString #
MonoPointed ByteString
Instance details Defined in Data.MonoTraversable Methods opoint :: Element ByteString -> ByteString #
GrowingAppend ByteString
Instance details Defined in Data.MonoTraversable
PersistField ByteString
Instance details Defined in Database.Persist.Class.PersistField Methods toPersistValue :: ByteString -> PersistValue # fromPersistValue :: PersistValue -> Either Text ByteString #
ToFlushBuilder ByteString
Instance details Defined in Yesod.Core.Content Methods toFlushBuilder :: ByteString -> Flush Builder #
ToContent ByteString
Instance details Defined in Yesod.Core.Content Methods toContent :: ByteString -> Content #
LazySequence ByteString ByteString
Instance details Defined in Data.Sequences Methods toChunks :: ByteString -> [ByteString0] # fromChunks :: [ByteString0] -> ByteString # toStrict :: ByteString -> ByteString0 # fromStrict :: ByteString0 -> ByteString #
Utf8 Text ByteString
Instance details Defined in Data.Sequences Methods encodeUtf8 :: Text -> ByteString # decodeUtf8 :: ByteString -> Text #
ToFlushBuilder (Flush ByteString)
Instance details Defined in Yesod.Core.Content Methods toFlushBuilder :: Flush ByteString -> Flush Builder #
ToTypedContent (ContentType, Content)
Instance details Defined in Yesod.Core.Content Methods toTypedContent :: (ContentType, Content) -> TypedContent #
ToContent (ContentType, Content)
Instance details Defined in Yesod.Core.Content Methods toContent :: (ContentType, Content) -> Content #
type State ByteString
Instance details Defined in Data.Attoparsec.Internal.Types type State ByteString = Buffer
type ChunkElem ByteString
Instance details Defined in Data.Attoparsec.Internal.Types type ChunkElem ByteString = Word8
type Tokens ByteString
Instance details Defined in Text.Megaparsec.Stream type Tokens ByteString = ByteString
type Token ByteString
Instance details Defined in Text.Megaparsec.Stream type Token ByteString = Word8
type Index ByteString
Instance details Defined in Data.Sequences type Index ByteString = Int
type Element ByteString
Instance details Defined in Data.MonoTraversable type Element ByteString = Word8

(<$>) :: Functor f => (a -> b) -> f a -> f b infixl 4 #

An infix synonym for fmap.

The name of this operator is an allusion to $. Note the similarities between their types:

 ($)  ::              (a -> b) ->   a ->   b
(<$>) :: Functor f => (a -> b) -> f a -> f b

Whereas $ is function application, <$> is function application lifted over a Functor.

Examples

Expand

Convert from a Maybe Int to a Maybe String using show:

>>> show <$> Nothing
Nothing
>>> show <$> Just 3
Just "3"

Convert from an Either Int Int to an Either Int String using show:

>>> show <$> Left 17
Left 17
>>> show <$> Right 17
Right "17"

Double each element of a list:

>>> (*2) <$> [1,2,3]
[2,4,6]

Apply even to the second element of a pair:

>>> even <$> (2,2)
(2,True)

data Text #

A space efficient, packed, unboxed Unicode text type.

Instances

Instances details

Eq CsvRules
Instance details Defined in Hledger.Read.CsvReader Methods (==) :: CsvRules -> CsvRules -> Bool # (/=) :: CsvRules -> CsvRules -> Bool #
Show CsvRules
Instance details Defined in Hledger.Read.CsvReader Methods showsPrec :: Int -> CsvRules -> ShowS # show :: CsvRules -> String # showList :: [CsvRules] -> ShowS #
Hashable Text
Instance details Defined in Data.Hashable.Class Methods hashWithSalt :: Int -> Text -> Int # hash :: Text -> Int #
ToJSON Text
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: Text -> Value # toEncoding :: Text -> Encoding # toJSONList :: [Text] -> Value # toEncodingList :: [Text] -> Encoding #
KeyValue Object	Constructs a singleton `HashMap`. For calling functions that demand an `Object` for constructing objects. To be used in conjunction with `mconcat`. Prefer to use `object` where possible.
Instance details Defined in Data.Aeson.Types.ToJSON Methods (.=) :: ToJSON v => Text -> v -> Object #
KeyValue Pair
Instance details Defined in Data.Aeson.Types.ToJSON Methods (.=) :: ToJSON v => Text -> v -> Pair #
ToJSONKey Text
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSONKey :: ToJSONKeyFunction Text # toJSONKeyList :: ToJSONKeyFunction [Text] #
FromJSON Text
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser Text # parseJSONList :: Value -> Parser [Text] #
FromJSONKey Text
Instance details Defined in Data.Aeson.Types.FromJSON Methods fromJSONKey :: FromJSONKeyFunction Text # fromJSONKeyList :: FromJSONKeyFunction [Text] #
Chunk Text
Instance details Defined in Data.Attoparsec.Internal.Types Associated Types type ChunkElem Text # Methods nullChunk :: Text -> Bool # pappendChunk :: State Text -> Text -> State Text # atBufferEnd :: Text -> State Text -> Pos # bufferElemAt :: Text -> Pos -> State Text -> Maybe (ChunkElem Text, Int) # chunkElemToChar :: Text -> ChunkElem Text -> Char #
ToValue Text
Instance details Defined in Text.Blaze Methods toValue :: Text -> AttributeValue # preEscapedToValue :: Text -> AttributeValue #
ToMarkup Text
Instance details Defined in Text.Blaze Methods toMarkup :: Text -> Markup # preEscapedToMarkup :: Text -> Markup #
FoldCase Text
Instance details Defined in Data.CaseInsensitive.Internal Methods foldCase :: Text -> Text # foldCaseList :: [Text] -> [Text]
HasChars Text
Instance details Defined in Text.DocLayout Methods foldrChar :: (Char -> b -> b) -> b -> Text -> b # foldlChar :: (b -> Char -> b) -> b -> Text -> b # replicateChar :: Int -> Char -> Text # isNull :: Text -> Bool # splitLines :: Text -> [Text] #
ToLogStr Text
Instance details Defined in System.Log.FastLogger.LogStr Methods toLogStr :: Text -> LogStr #
Stream Text
Instance details Defined in Text.Megaparsec.Stream Associated Types type Token Text # type Tokens Text # Methods tokenToChunk :: Proxy Text -> Token Text -> Tokens Text # tokensToChunk :: Proxy Text -> [Token Text] -> Tokens Text # chunkToTokens :: Proxy Text -> Tokens Text -> [Token Text] # chunkLength :: Proxy Text -> Tokens Text -> Int # chunkEmpty :: Proxy Text -> Tokens Text -> Bool # take1_ :: Text -> Maybe (Token Text, Text) # takeN_ :: Int -> Text -> Maybe (Tokens Text, Text) # takeWhile_ :: (Token Text -> Bool) -> Text -> (Tokens Text, Text) #
VisualStream Text
Instance details Defined in Text.Megaparsec.Stream Methods showTokens :: Proxy Text -> NonEmpty (Token Text) -> String # tokensLength :: Proxy Text -> NonEmpty (Token Text) -> Int #
TraversableStream Text
Instance details Defined in Text.Megaparsec.Stream Methods reachOffset :: Int -> PosState Text -> (Maybe String, PosState Text) # reachOffsetNoLine :: Int -> PosState Text -> PosState Text #
SemiSequence Text
Instance details Defined in Data.Sequences Associated Types type Index Text # Methods intersperse :: Element Text -> Text -> Text # reverse :: Text -> Text # find :: (Element Text -> Bool) -> Text -> Maybe (Element Text) # sortBy :: (Element Text -> Element Text -> Ordering) -> Text -> Text # cons :: Element Text -> Text -> Text # snoc :: Text -> Element Text -> Text #
IsSequence Text
Instance details Defined in Data.Sequences Methods fromList :: [Element Text] -> Text # lengthIndex :: Text -> Index Text # break :: (Element Text -> Bool) -> Text -> (Text, Text) # span :: (Element Text -> Bool) -> Text -> (Text, Text) # dropWhile :: (Element Text -> Bool) -> Text -> Text # takeWhile :: (Element Text -> Bool) -> Text -> Text # splitAt :: Index Text -> Text -> (Text, Text) # unsafeSplitAt :: Index Text -> Text -> (Text, Text) # take :: Index Text -> Text -> Text # unsafeTake :: Index Text -> Text -> Text # drop :: Index Text -> Text -> Text # unsafeDrop :: Index Text -> Text -> Text # dropEnd :: Index Text -> Text -> Text # partition :: (Element Text -> Bool) -> Text -> (Text, Text) # uncons :: Text -> Maybe (Element Text, Text) # unsnoc :: Text -> Maybe (Text, Element Text) # filter :: (Element Text -> Bool) -> Text -> Text # filterM :: Monad m => (Element Text -> m Bool) -> Text -> m Text # replicate :: Index Text -> Element Text -> Text # replicateM :: Monad m => Index Text -> m (Element Text) -> m Text # groupBy :: (Element Text -> Element Text -> Bool) -> Text -> [Text] # groupAllOn :: Eq b => (Element Text -> b) -> Text -> [Text] # subsequences :: Text -> [Text] # permutations :: Text -> [Text] # tailEx :: Text -> Text # tailMay :: Text -> Maybe Text # initEx :: Text -> Text # initMay :: Text -> Maybe Text # unsafeTail :: Text -> Text # unsafeInit :: Text -> Text # index :: Text -> Index Text -> Maybe (Element Text) # indexEx :: Text -> Index Text -> Element Text # unsafeIndex :: Text -> Index Text -> Element Text # splitWhen :: (Element Text -> Bool) -> Text -> [Text] #
Textual Text
Instance details Defined in Data.Sequences Methods words :: Text -> [Text] # unwords :: (Element seq ~ Text, MonoFoldable seq) => seq -> Text # lines :: Text -> [Text] # unlines :: (Element seq ~ Text, MonoFoldable seq) => seq -> Text # toLower :: Text -> Text # toUpper :: Text -> Text # toCaseFold :: Text -> Text # breakWord :: Text -> (Text, Text) # breakLine :: Text -> (Text, Text) #
MonoFunctor Text
Instance details Defined in Data.MonoTraversable Methods omap :: (Element Text -> Element Text) -> Text -> Text #
MonoFoldable Text
Instance details Defined in Data.MonoTraversable Methods ofoldMap :: Monoid m => (Element Text -> m) -> Text -> m # ofoldr :: (Element Text -> b -> b) -> b -> Text -> b # ofoldl' :: (a -> Element Text -> a) -> a -> Text -> a # otoList :: Text -> [Element Text] # oall :: (Element Text -> Bool) -> Text -> Bool # oany :: (Element Text -> Bool) -> Text -> Bool # onull :: Text -> Bool # olength :: Text -> Int # olength64 :: Text -> Int64 # ocompareLength :: Integral i => Text -> i -> Ordering # otraverse_ :: Applicative f => (Element Text -> f b) -> Text -> f () # ofor_ :: Applicative f => Text -> (Element Text -> f b) -> f () # omapM_ :: Applicative m => (Element Text -> m ()) -> Text -> m () # oforM_ :: Applicative m => Text -> (Element Text -> m ()) -> m () # ofoldlM :: Monad m => (a -> Element Text -> m a) -> a -> Text -> m a # ofoldMap1Ex :: Semigroup m => (Element Text -> m) -> Text -> m # ofoldr1Ex :: (Element Text -> Element Text -> Element Text) -> Text -> Element Text # ofoldl1Ex' :: (Element Text -> Element Text -> Element Text) -> Text -> Element Text # headEx :: Text -> Element Text # lastEx :: Text -> Element Text # unsafeHead :: Text -> Element Text # unsafeLast :: Text -> Element Text # maximumByEx :: (Element Text -> Element Text -> Ordering) -> Text -> Element Text # minimumByEx :: (Element Text -> Element Text -> Ordering) -> Text -> Element Text # oelem :: Element Text -> Text -> Bool # onotElem :: Element Text -> Text -> Bool #
MonoTraversable Text
Instance details Defined in Data.MonoTraversable Methods otraverse :: Applicative f => (Element Text -> f (Element Text)) -> Text -> f Text # omapM :: Applicative m => (Element Text -> m (Element Text)) -> Text -> m Text #
MonoPointed Text
Instance details Defined in Data.MonoTraversable Methods opoint :: Element Text -> Text #
GrowingAppend Text
Instance details Defined in Data.MonoTraversable
PathPiece Text
Instance details Defined in Web.PathPieces Methods fromPathPiece :: Text -> Maybe Text # toPathPiece :: Text -> Text #
PersistField Text
Instance details Defined in Database.Persist.Class.PersistField Methods toPersistValue :: Text -> PersistValue # fromPersistValue :: PersistValue -> Either Text Text #
Pretty Text	Automatically converts all newlines to `line`. `>>>` `pretty ("hello\nworld" :: Text)`hello world Note that `line` can be undone by `group`: `>>>` `group (pretty ("hello\nworld" :: Text))`hello world Manually use `hardline` if you definitely want newlines.
Instance details Defined in Prettyprinter.Internal Methods pretty :: Text -> Doc ann # prettyList :: [Text] -> Doc ann #
ToText Text
Instance details Defined in Text.Shakespeare.Text Methods toText :: Text -> Builder #
ToMessage Text
Instance details Defined in Text.Shakespeare.I18N Methods toMessage :: Text -> Text #
ToCss Text
Instance details Defined in Text.Internal.Css Methods toCss :: Text -> Builder #
ToJavascript Text
Instance details Defined in Text.Julius Methods toJavascript :: Text -> Javascript #
RawJS Text
Instance details Defined in Text.Julius Methods rawJS :: Text -> RawJavascript #
ToTypedContent Text
Instance details Defined in Yesod.Core.Content Methods toTypedContent :: Text -> TypedContent #
HasContentType Text
Instance details Defined in Yesod.Core.Content Methods getContentType :: Monad m => m Text -> ContentType #
ToFlushBuilder Text
Instance details Defined in Yesod.Core.Content Methods toFlushBuilder :: Text -> Flush Builder #
ToContent Text
Instance details Defined in Yesod.Core.Content Methods toContent :: Text -> Content #
LazySequence Text Text
Instance details Defined in Data.Sequences Methods toChunks :: Text -> [Text0] # fromChunks :: [Text0] -> Text # toStrict :: Text -> Text0 # fromStrict :: Text0 -> Text #
Utf8 Text ByteString
Instance details Defined in Data.Sequences Methods encodeUtf8 :: Text -> ByteString # decodeUtf8 :: ByteString -> Text #
RenderMessage master Text
Instance details Defined in Text.Shakespeare.I18N Methods renderMessage :: master -> [Lang] -> Text -> Text #
RedirectUrl master Text
Instance details Defined in Yesod.Core.Handler Methods toTextUrl :: (MonadHandler m, HandlerSite m ~ master) => Text -> m Text #
ToWidget site Text	Since: yesod-core-1.4.28
Instance details Defined in Yesod.Core.Widget Methods toWidget :: (MonadWidget m, HandlerSite m ~ site) => Text -> m () #
FromPairs Value (DList Pair)
Instance details Defined in Data.Aeson.Types.ToJSON Methods fromPairs :: DList Pair -> Value
v ~ Value => KeyValuePair v (DList Pair)
Instance details Defined in Data.Aeson.Types.ToJSON Methods pair :: String -> v -> DList Pair
ToAttributes [(Text, Text)]
Instance details Defined in Text.Hamlet Methods toAttributes :: [(Text, Text)] -> [(Text, Text)] #
ToFlushBuilder (Flush Text)
Instance details Defined in Yesod.Core.Content Methods toFlushBuilder :: Flush Text -> Flush Builder #
Ord (ParseError Text CustomErr)
Instance details Defined in Text.Megaparsec.Custom Methods compare :: ParseError Text CustomErr -> ParseError Text CustomErr -> Ordering # (<) :: ParseError Text CustomErr -> ParseError Text CustomErr -> Bool # (<=) :: ParseError Text CustomErr -> ParseError Text CustomErr -> Bool # (>) :: ParseError Text CustomErr -> ParseError Text CustomErr -> Bool # (>=) :: ParseError Text CustomErr -> ParseError Text CustomErr -> Bool # max :: ParseError Text CustomErr -> ParseError Text CustomErr -> ParseError Text CustomErr # min :: ParseError Text CustomErr -> ParseError Text CustomErr -> ParseError Text CustomErr #
PersistField v => PersistField (Map Text v)
Instance details Defined in Database.Persist.Class.PersistField Methods toPersistValue :: Map Text v -> PersistValue # fromPersistValue :: PersistValue -> Either Text (Map Text v) #
ToAttributes (Text, Text)
Instance details Defined in Text.Hamlet Methods toAttributes :: (Text, Text) -> [(Text, Text)] #
type State Text
Instance details Defined in Data.Attoparsec.Internal.Types type State Text = Buffer
type ChunkElem Text
Instance details Defined in Data.Attoparsec.Internal.Types type ChunkElem Text = Char
type Item Text
Instance details Defined in Data.Text type Item Text = Char
type Tokens Text
Instance details Defined in Text.Megaparsec.Stream type Tokens Text = Text
type Token Text
Instance details Defined in Text.Megaparsec.Stream type Token Text = Char
type Index Text
Instance details Defined in Data.Sequences type Index Text = Int
type Element Text
Instance details Defined in Data.MonoTraversable type Element Text = Char

const :: a -> b -> a #

const x is a unary function which evaluates to x for all inputs.

>>> const 42 "hello"
42

>>> map (const 42) [0..3]
[42,42,42,42]

(.) :: (b -> c) -> (a -> b) -> a -> c infixr 9 #

Function composition.

id :: a -> a #

Identity function.

id x = x

data UTCTime #

This is the simplest representation of UTC. It consists of the day number, and a time offset from midnight. Note that if a day has a leap second added to it, it will have 86401 seconds.

Constructors

UTCTime
Fields utctDay :: Day the day utctDayTime :: DiffTime the time from midnight, 0 <= t < 86401s (because of leap-seconds)

Instances

Instances details

Eq UTCTime
Instance details Defined in Data.Time.Clock.Internal.UTCTime Methods (==) :: UTCTime -> UTCTime -> Bool # (/=) :: UTCTime -> UTCTime -> Bool #
Data UTCTime
Instance details Defined in Data.Time.Clock.Internal.UTCTime Methods gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> UTCTime -> c UTCTime # gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c UTCTime # toConstr :: UTCTime -> Constr # dataTypeOf :: UTCTime -> DataType # dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c UTCTime) # dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c UTCTime) # gmapT :: (forall b. Data b => b -> b) -> UTCTime -> UTCTime # gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> UTCTime -> r # gmapQr :: forall r r'. (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> UTCTime -> r # gmapQ :: (forall d. Data d => d -> u) -> UTCTime -> [u] # gmapQi :: Int -> (forall d. Data d => d -> u) -> UTCTime -> u # gmapM :: Monad m => (forall d. Data d => d -> m d) -> UTCTime -> m UTCTime # gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> UTCTime -> m UTCTime # gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> UTCTime -> m UTCTime #
Ord UTCTime
Instance details Defined in Data.Time.Clock.Internal.UTCTime Methods compare :: UTCTime -> UTCTime -> Ordering # (<) :: UTCTime -> UTCTime -> Bool # (<=) :: UTCTime -> UTCTime -> Bool # (>) :: UTCTime -> UTCTime -> Bool # (>=) :: UTCTime -> UTCTime -> Bool # max :: UTCTime -> UTCTime -> UTCTime # min :: UTCTime -> UTCTime -> UTCTime #
ToJSON UTCTime
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: UTCTime -> Value # toEncoding :: UTCTime -> Encoding # toJSONList :: [UTCTime] -> Value # toEncodingList :: [UTCTime] -> Encoding #
ToJSONKey UTCTime
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSONKey :: ToJSONKeyFunction UTCTime # toJSONKeyList :: ToJSONKeyFunction [UTCTime] #
FromJSON UTCTime
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser UTCTime # parseJSONList :: Value -> Parser [UTCTime] #
FromJSONKey UTCTime
Instance details Defined in Data.Aeson.Types.FromJSON Methods fromJSONKey :: FromJSONKeyFunction UTCTime # fromJSONKeyList :: FromJSONKeyFunction [UTCTime] #
NFData UTCTime
Instance details Defined in Data.Time.Clock.Internal.UTCTime Methods rnf :: UTCTime -> () #
PersistField UTCTime
Instance details Defined in Database.Persist.Class.PersistField Methods toPersistValue :: UTCTime -> PersistValue # fromPersistValue :: PersistValue -> Either Text UTCTime #

class ToJSON a where #

A type that can be converted to JSON.

Instances in general must specify toJSON and should (but don't need to) specify toEncoding.

An example type and instance:

-- Allow ourselves to write Text literals.
{-# LANGUAGE OverloadedStrings #-}

data Coord = Coord { x :: Double, y :: Double }

instance ToJSON Coord where
  toJSON (Coord x y) = object ["x" .= x, "y" .= y]

  toEncoding (Coord x y) = pairs ("x" .= x <> "y" .= y)

Instead of manually writing your ToJSON instance, there are two options to do it automatically:

Data.Aeson.TH provides Template Haskell functions which will derive an instance at compile time. The generated instance is optimized for your type so it will probably be more efficient than the following option.
The compiler can provide a default generic implementation for toJSON.

To use the second, simply add a deriving Generic clause to your datatype and declare a ToJSON instance. If you require nothing other than defaultOptions, it is sufficient to write (and this is the only alternative where the default toJSON implementation is sufficient):

{-# LANGUAGE DeriveGeneric #-}

import GHC.Generics

data Coord = Coord { x :: Double, y :: Double } deriving Generic

instance ToJSON Coord where
    toEncoding = genericToEncoding defaultOptions

If on the other hand you wish to customize the generic decoding, you have to implement both methods:

customOptions = defaultOptions
                { fieldLabelModifier = map toUpper
                }

instance ToJSON Coord where
    toJSON     = genericToJSON customOptions
    toEncoding = genericToEncoding customOptions

Previous versions of this library only had the toJSON method. Adding toEncoding had two reasons:

toEncoding is more efficient for the common case that the output of toJSON is directly serialized to a ByteString. Further, expressing either method in terms of the other would be non-optimal.
The choice of defaults allows a smooth transition for existing users: Existing instances that do not define toEncoding still compile and have the correct semantics. This is ensured by making the default implementation of toEncoding use toJSON. This produces correct results, but since it performs an intermediate conversion to a Value, it will be less efficient than directly emitting an Encoding. (this also means that specifying nothing more than instance ToJSON Coord would be sufficient as a generically decoding instance, but there probably exists no good reason to not specify toEncoding in new instances.)

Minimal complete definition

Nothing

Methods

toJSON :: a -> Value #

Convert a Haskell value to a JSON-friendly intermediate type.

toEncoding :: a -> Encoding #

Encode a Haskell value as JSON.

The default implementation of this method creates an intermediate Value using toJSON. This provides source-level compatibility for people upgrading from older versions of this library, but obviously offers no performance advantage.

To benefit from direct encoding, you must provide an implementation for this method. The easiest way to do so is by having your types implement Generic using the DeriveGeneric extension, and then have GHC generate a method body as follows.

instance ToJSON Coord where
    toEncoding = genericToEncoding defaultOptions

toJSONList :: [a] -> Value #

toEncodingList :: [a] -> Encoding #

Instances

Instances details

ToJSON Bool
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: Bool -> Value # toEncoding :: Bool -> Encoding # toJSONList :: [Bool] -> Value # toEncodingList :: [Bool] -> Encoding #
ToJSON Char
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: Char -> Value # toEncoding :: Char -> Encoding # toJSONList :: [Char] -> Value # toEncodingList :: [Char] -> Encoding #
ToJSON Double
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: Double -> Value # toEncoding :: Double -> Encoding # toJSONList :: [Double] -> Value # toEncodingList :: [Double] -> Encoding #
ToJSON Float
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: Float -> Value # toEncoding :: Float -> Encoding # toJSONList :: [Float] -> Value # toEncodingList :: [Float] -> Encoding #
ToJSON Int
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: Int -> Value # toEncoding :: Int -> Encoding # toJSONList :: [Int] -> Value # toEncodingList :: [Int] -> Encoding #
ToJSON Int8
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: Int8 -> Value # toEncoding :: Int8 -> Encoding # toJSONList :: [Int8] -> Value # toEncodingList :: [Int8] -> Encoding #
ToJSON Int16
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: Int16 -> Value # toEncoding :: Int16 -> Encoding # toJSONList :: [Int16] -> Value # toEncodingList :: [Int16] -> Encoding #
ToJSON Int32
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: Int32 -> Value # toEncoding :: Int32 -> Encoding # toJSONList :: [Int32] -> Value # toEncodingList :: [Int32] -> Encoding #
ToJSON Int64
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: Int64 -> Value # toEncoding :: Int64 -> Encoding # toJSONList :: [Int64] -> Value # toEncodingList :: [Int64] -> Encoding #
ToJSON Integer
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: Integer -> Value # toEncoding :: Integer -> Encoding # toJSONList :: [Integer] -> Value # toEncodingList :: [Integer] -> Encoding #
ToJSON Natural
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: Natural -> Value # toEncoding :: Natural -> Encoding # toJSONList :: [Natural] -> Value # toEncodingList :: [Natural] -> Encoding #
ToJSON Ordering
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: Ordering -> Value # toEncoding :: Ordering -> Encoding # toJSONList :: [Ordering] -> Value # toEncodingList :: [Ordering] -> Encoding #
ToJSON Word
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: Word -> Value # toEncoding :: Word -> Encoding # toJSONList :: [Word] -> Value # toEncodingList :: [Word] -> Encoding #
ToJSON Word8
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: Word8 -> Value # toEncoding :: Word8 -> Encoding # toJSONList :: [Word8] -> Value # toEncodingList :: [Word8] -> Encoding #
ToJSON Word16
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: Word16 -> Value # toEncoding :: Word16 -> Encoding # toJSONList :: [Word16] -> Value # toEncodingList :: [Word16] -> Encoding #
ToJSON Word32
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: Word32 -> Value # toEncoding :: Word32 -> Encoding # toJSONList :: [Word32] -> Value # toEncodingList :: [Word32] -> Encoding #
ToJSON Word64
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: Word64 -> Value # toEncoding :: Word64 -> Encoding # toJSONList :: [Word64] -> Value # toEncodingList :: [Word64] -> Encoding #
ToJSON ()
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: () -> Value # toEncoding :: () -> Encoding # toJSONList :: [()] -> Value # toEncodingList :: [()] -> Encoding #
ToJSON Version
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: Version -> Value # toEncoding :: Version -> Encoding # toJSONList :: [Version] -> Value # toEncodingList :: [Version] -> Encoding #
ToJSON Scientific
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: Scientific -> Value # toEncoding :: Scientific -> Encoding # toJSONList :: [Scientific] -> Value # toEncodingList :: [Scientific] -> Encoding #
ToJSON Text
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: Text -> Value # toEncoding :: Text -> Encoding # toJSONList :: [Text] -> Value # toEncodingList :: [Text] -> Encoding #
ToJSON UTCTime
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: UTCTime -> Value # toEncoding :: UTCTime -> Encoding # toJSONList :: [UTCTime] -> Value # toEncodingList :: [UTCTime] -> Encoding #
ToJSON Value
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: Value -> Value # toEncoding :: Value -> Encoding # toJSONList :: [Value] -> Value # toEncodingList :: [Value] -> Encoding #
ToJSON DotNetTime
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: DotNetTime -> Value # toEncoding :: DotNetTime -> Encoding # toJSONList :: [DotNetTime] -> Value # toEncodingList :: [DotNetTime] -> Encoding #
ToJSON Text
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: Text -> Value # toEncoding :: Text -> Encoding # toJSONList :: [Text] -> Value # toEncodingList :: [Text] -> Encoding #
ToJSON Number
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: Number -> Value # toEncoding :: Number -> Encoding # toJSONList :: [Number] -> Value # toEncodingList :: [Number] -> Encoding #
ToJSON Void
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: Void -> Value # toEncoding :: Void -> Encoding # toJSONList :: [Void] -> Value # toEncodingList :: [Void] -> Encoding #
ToJSON CTime
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: CTime -> Value # toEncoding :: CTime -> Encoding # toJSONList :: [CTime] -> Value # toEncodingList :: [CTime] -> Encoding #
ToJSON IntSet
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: IntSet -> Value # toEncoding :: IntSet -> Encoding # toJSONList :: [IntSet] -> Value # toEncodingList :: [IntSet] -> Encoding #
ToJSON Regexp
Instance details Defined in Hledger.Utils.Regex Methods toJSON :: Regexp -> Value # toEncoding :: Regexp -> Encoding # toJSONList :: [Regexp] -> Value # toEncodingList :: [Regexp] -> Encoding #
ToJSON DisplayName
Instance details Defined in Hledger.Reports.ReportTypes Methods toJSON :: DisplayName -> Value # toEncoding :: DisplayName -> Encoding # toJSONList :: [DisplayName] -> Value # toEncodingList :: [DisplayName] -> Encoding #
ToJSON PersistValue
Instance details Defined in Database.Persist.PersistValue Methods toJSON :: PersistValue -> Value # toEncoding :: PersistValue -> Encoding # toJSONList :: [PersistValue] -> Value # toEncodingList :: [PersistValue] -> Encoding #
ToJSON ZonedTime
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: ZonedTime -> Value # toEncoding :: ZonedTime -> Encoding # toJSONList :: [ZonedTime] -> Value # toEncodingList :: [ZonedTime] -> Encoding #
ToJSON LocalTime
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: LocalTime -> Value # toEncoding :: LocalTime -> Encoding # toJSONList :: [LocalTime] -> Value # toEncodingList :: [LocalTime] -> Encoding #
ToJSON TimeOfDay
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: TimeOfDay -> Value # toEncoding :: TimeOfDay -> Encoding # toJSONList :: [TimeOfDay] -> Value # toEncodingList :: [TimeOfDay] -> Encoding #
ToJSON CalendarDiffTime
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: CalendarDiffTime -> Value # toEncoding :: CalendarDiffTime -> Encoding # toJSONList :: [CalendarDiffTime] -> Value # toEncodingList :: [CalendarDiffTime] -> Encoding #
ToJSON SystemTime	Encoded as number
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: SystemTime -> Value # toEncoding :: SystemTime -> Encoding # toJSONList :: [SystemTime] -> Value # toEncodingList :: [SystemTime] -> Encoding #
ToJSON NominalDiffTime
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: NominalDiffTime -> Value # toEncoding :: NominalDiffTime -> Encoding # toJSONList :: [NominalDiffTime] -> Value # toEncodingList :: [NominalDiffTime] -> Encoding #
ToJSON DiffTime
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: DiffTime -> Value # toEncoding :: DiffTime -> Encoding # toJSONList :: [DiffTime] -> Value # toEncodingList :: [DiffTime] -> Encoding #
ToJSON DayOfWeek
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: DayOfWeek -> Value # toEncoding :: DayOfWeek -> Encoding # toJSONList :: [DayOfWeek] -> Value # toEncodingList :: [DayOfWeek] -> Encoding #
ToJSON Day
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: Day -> Value # toEncoding :: Day -> Encoding # toJSONList :: [Day] -> Value # toEncodingList :: [Day] -> Encoding #
ToJSON CalendarDiffDays
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: CalendarDiffDays -> Value # toEncoding :: CalendarDiffDays -> Encoding # toJSONList :: [CalendarDiffDays] -> Value # toEncodingList :: [CalendarDiffDays] -> Encoding #
ToJSON QuarterOfYear
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: QuarterOfYear -> Value # toEncoding :: QuarterOfYear -> Encoding # toJSONList :: [QuarterOfYear] -> Value # toEncodingList :: [QuarterOfYear] -> Encoding #
ToJSON Quarter
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: Quarter -> Value # toEncoding :: Quarter -> Encoding # toJSONList :: [Quarter] -> Value # toEncodingList :: [Quarter] -> Encoding #
ToJSON Month
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: Month -> Value # toEncoding :: Month -> Encoding # toJSONList :: [Month] -> Value # toEncodingList :: [Month] -> Encoding #
ToJSON UUID
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: UUID -> Value # toEncoding :: UUID -> Encoding # toJSONList :: [UUID] -> Value # toEncodingList :: [UUID] -> Encoding #
ToJSON Textarea
Instance details Defined in Yesod.Form.Fields Methods toJSON :: Textarea -> Value # toEncoding :: Textarea -> Encoding # toJSONList :: [Textarea] -> Value # toEncodingList :: [Textarea] -> Encoding #
ToJSON a => ToJSON [a]
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: [a] -> Value # toEncoding :: [a] -> Encoding # toJSONList :: [[a]] -> Value # toEncodingList :: [[a]] -> Encoding #
ToJSON a => ToJSON (Maybe a)
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: Maybe a -> Value # toEncoding :: Maybe a -> Encoding # toJSONList :: [Maybe a] -> Value # toEncodingList :: [Maybe a] -> Encoding #
(ToJSON a, Integral a) => ToJSON (Ratio a)
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: Ratio a -> Value # toEncoding :: Ratio a -> Encoding # toJSONList :: [Ratio a] -> Value # toEncodingList :: [Ratio a] -> Encoding #
ToJSON a => ToJSON (Min a)
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: Min a -> Value # toEncoding :: Min a -> Encoding # toJSONList :: [Min a] -> Value # toEncodingList :: [Min a] -> Encoding #
ToJSON a => ToJSON (Max a)
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: Max a -> Value # toEncoding :: Max a -> Encoding # toJSONList :: [Max a] -> Value # toEncodingList :: [Max a] -> Encoding #
ToJSON a => ToJSON (First a)
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: First a -> Value # toEncoding :: First a -> Encoding # toJSONList :: [First a] -> Value # toEncodingList :: [First a] -> Encoding #
ToJSON a => ToJSON (Last a)
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: Last a -> Value # toEncoding :: Last a -> Encoding # toJSONList :: [Last a] -> Value # toEncodingList :: [Last a] -> Encoding #
ToJSON a => ToJSON (WrappedMonoid a)
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: WrappedMonoid a -> Value # toEncoding :: WrappedMonoid a -> Encoding # toJSONList :: [WrappedMonoid a] -> Value # toEncodingList :: [WrappedMonoid a] -> Encoding #
ToJSON a => ToJSON (Option a)
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: Option a -> Value # toEncoding :: Option a -> Encoding # toJSONList :: [Option a] -> Value # toEncodingList :: [Option a] -> Encoding #
ToJSON a => ToJSON (Identity a)
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: Identity a -> Value # toEncoding :: Identity a -> Encoding # toJSONList :: [Identity a] -> Value # toEncodingList :: [Identity a] -> Encoding #
ToJSON a => ToJSON (First a)
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: First a -> Value # toEncoding :: First a -> Encoding # toJSONList :: [First a] -> Value # toEncodingList :: [First a] -> Encoding #
ToJSON a => ToJSON (Last a)
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: Last a -> Value # toEncoding :: Last a -> Encoding # toJSONList :: [Last a] -> Value # toEncodingList :: [Last a] -> Encoding #
ToJSON a => ToJSON (Dual a)
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: Dual a -> Value # toEncoding :: Dual a -> Encoding # toJSONList :: [Dual a] -> Value # toEncodingList :: [Dual a] -> Encoding #
ToJSON a => ToJSON (NonEmpty a)
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: NonEmpty a -> Value # toEncoding :: NonEmpty a -> Encoding # toJSONList :: [NonEmpty a] -> Value # toEncodingList :: [NonEmpty a] -> Encoding #
ToJSON a => ToJSON (IntMap a)
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: IntMap a -> Value # toEncoding :: IntMap a -> Encoding # toJSONList :: [IntMap a] -> Value # toEncodingList :: [IntMap a] -> Encoding #
ToJSON v => ToJSON (Tree v)
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: Tree v -> Value # toEncoding :: Tree v -> Encoding # toJSONList :: [Tree v] -> Value # toEncodingList :: [Tree v] -> Encoding #
ToJSON a => ToJSON (Seq a)
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: Seq a -> Value # toEncoding :: Seq a -> Encoding # toJSONList :: [Seq a] -> Value # toEncodingList :: [Seq a] -> Encoding #
ToJSON a => ToJSON (Set a)
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: Set a -> Value # toEncoding :: Set a -> Encoding # toJSONList :: [Set a] -> Value # toEncodingList :: [Set a] -> Encoding #
ToJSON1 f => ToJSON (Fix f)	Since: aeson-1.5.3.0
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: Fix f -> Value # toEncoding :: Fix f -> Encoding # toJSONList :: [Fix f] -> Value # toEncodingList :: [Fix f] -> Encoding #
(ToJSON1 f, Functor f) => ToJSON (Mu f)	Since: aeson-1.5.3.0
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: Mu f -> Value # toEncoding :: Mu f -> Encoding # toJSONList :: [Mu f] -> Value # toEncodingList :: [Mu f] -> Encoding #
(ToJSON1 f, Functor f) => ToJSON (Nu f)	Since: aeson-1.5.3.0
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: Nu f -> Value # toEncoding :: Nu f -> Encoding # toJSONList :: [Nu f] -> Value # toEncodingList :: [Nu f] -> Encoding #
ToJSON a => ToJSON (DNonEmpty a)	Since: aeson-1.5.3.0
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: DNonEmpty a -> Value # toEncoding :: DNonEmpty a -> Encoding # toJSONList :: [DNonEmpty a] -> Value # toEncodingList :: [DNonEmpty a] -> Encoding #
ToJSON a => ToJSON (DList a)
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: DList a -> Value # toEncoding :: DList a -> Encoding # toJSONList :: [DList a] -> Value # toEncodingList :: [DList a] -> Encoding #
(Prim a, ToJSON a) => ToJSON (PrimArray a)
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: PrimArray a -> Value # toEncoding :: PrimArray a -> Encoding # toJSONList :: [PrimArray a] -> Value # toEncodingList :: [PrimArray a] -> Encoding #
ToJSON a => ToJSON (SmallArray a)
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: SmallArray a -> Value # toEncoding :: SmallArray a -> Encoding # toJSONList :: [SmallArray a] -> Value # toEncodingList :: [SmallArray a] -> Encoding #
ToJSON a => ToJSON (Array a)
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: Array a -> Value # toEncoding :: Array a -> Encoding # toJSONList :: [Array a] -> Value # toEncodingList :: [Array a] -> Encoding #
ToJSON a => ToJSON (Maybe a)	Since: aeson-1.5.3.0
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: Maybe a -> Value # toEncoding :: Maybe a -> Encoding # toJSONList :: [Maybe a] -> Value # toEncodingList :: [Maybe a] -> Encoding #
ToJSON a => ToJSON (HashSet a)
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: HashSet a -> Value # toEncoding :: HashSet a -> Encoding # toJSONList :: [HashSet a] -> Value # toEncodingList :: [HashSet a] -> Encoding #
(Vector Vector a, ToJSON a) => ToJSON (Vector a)
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: Vector a -> Value # toEncoding :: Vector a -> Encoding # toJSONList :: [Vector a] -> Value # toEncodingList :: [Vector a] -> Encoding #
(Storable a, ToJSON a) => ToJSON (Vector a)
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: Vector a -> Value # toEncoding :: Vector a -> Encoding # toJSONList :: [Vector a] -> Value # toEncodingList :: [Vector a] -> Encoding #
(Prim a, ToJSON a) => ToJSON (Vector a)
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: Vector a -> Value # toEncoding :: Vector a -> Encoding # toJSONList :: [Vector a] -> Value # toEncodingList :: [Vector a] -> Encoding #
ToJSON a => ToJSON (Vector a)
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: Vector a -> Value # toEncoding :: Vector a -> Encoding # toJSONList :: [Vector a] -> Value # toEncodingList :: [Vector a] -> Encoding #
(ToJSON a, ToJSON b) => ToJSON (Either a b)
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: Either a b -> Value # toEncoding :: Either a b -> Encoding # toJSONList :: [Either a b] -> Value # toEncodingList :: [Either a b] -> Encoding #
(ToJSON a, ToJSON b) => ToJSON (a, b)
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: (a, b) -> Value # toEncoding :: (a, b) -> Encoding # toJSONList :: [(a, b)] -> Value # toEncodingList :: [(a, b)] -> Encoding #
(ToJSON v, ToJSONKey k) => ToJSON (HashMap k v)
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: HashMap k v -> Value # toEncoding :: HashMap k v -> Encoding # toJSONList :: [HashMap k v] -> Value # toEncodingList :: [HashMap k v] -> Encoding #
(ToJSON v, ToJSONKey k) => ToJSON (Map k v)
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: Map k v -> Value # toEncoding :: Map k v -> Encoding # toJSONList :: [Map k v] -> Value # toEncodingList :: [Map k v] -> Encoding #
HasResolution a => ToJSON (Fixed a)
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: Fixed a -> Value # toEncoding :: Fixed a -> Encoding # toJSONList :: [Fixed a] -> Value # toEncodingList :: [Fixed a] -> Encoding #
ToJSON (Proxy a)
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: Proxy a -> Value # toEncoding :: Proxy a -> Encoding # toJSONList :: [Proxy a] -> Value # toEncodingList :: [Proxy a] -> Encoding #
(ToJSON b, ToJSON a) => ToJSON (CompoundPeriodicReport a b)
Instance details Defined in Hledger.Reports.ReportTypes Methods toJSON :: CompoundPeriodicReport a b -> Value # toEncoding :: CompoundPeriodicReport a b -> Encoding # toJSONList :: [CompoundPeriodicReport a b] -> Value # toEncodingList :: [CompoundPeriodicReport a b] -> Encoding #
(ToJSON b, ToJSON a) => ToJSON (PeriodicReportRow a b)
Instance details Defined in Hledger.Reports.ReportTypes Methods toJSON :: PeriodicReportRow a b -> Value # toEncoding :: PeriodicReportRow a b -> Encoding # toJSONList :: [PeriodicReportRow a b] -> Value # toEncodingList :: [PeriodicReportRow a b] -> Encoding #
(ToJSON a, ToJSON b) => ToJSON (PeriodicReport a b)
Instance details Defined in Hledger.Reports.ReportTypes Methods toJSON :: PeriodicReport a b -> Value # toEncoding :: PeriodicReport a b -> Encoding # toJSONList :: [PeriodicReport a b] -> Value # toEncodingList :: [PeriodicReport a b] -> Encoding #
(ToJSON a, ToJSON b) => ToJSON (Pair a b)	Since: aeson-1.5.3.0
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: Pair a b -> Value # toEncoding :: Pair a b -> Encoding # toJSONList :: [Pair a b] -> Value # toEncodingList :: [Pair a b] -> Encoding #
(ToJSON a, ToJSON b) => ToJSON (These a b)	Since: aeson-1.5.3.0
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: These a b -> Value # toEncoding :: These a b -> Encoding # toJSONList :: [These a b] -> Value # toEncodingList :: [These a b] -> Encoding #
(ToJSON a, ToJSON b) => ToJSON (Either a b)	Since: aeson-1.5.3.0
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: Either a b -> Value # toEncoding :: Either a b -> Encoding # toJSONList :: [Either a b] -> Value # toEncodingList :: [Either a b] -> Encoding #
(ToJSON a, ToJSON b) => ToJSON (These a b)	Since: aeson-1.5.1.0
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: These a b -> Value # toEncoding :: These a b -> Encoding # toJSONList :: [These a b] -> Value # toEncodingList :: [These a b] -> Encoding #
(ToJSON a, ToJSON b, ToJSON c) => ToJSON (a, b, c)
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: (a, b, c) -> Value # toEncoding :: (a, b, c) -> Encoding # toJSONList :: [(a, b, c)] -> Value # toEncodingList :: [(a, b, c)] -> Encoding #
ToJSON a => ToJSON (Const a b)
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: Const a b -> Value # toEncoding :: Const a b -> Encoding # toJSONList :: [Const a b] -> Value # toEncodingList :: [Const a b] -> Encoding #
ToJSON b => ToJSON (Tagged a b)
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: Tagged a b -> Value # toEncoding :: Tagged a b -> Encoding # toJSONList :: [Tagged a b] -> Value # toEncodingList :: [Tagged a b] -> Encoding #
(ToJSON1 f, ToJSON1 g, ToJSON a) => ToJSON (These1 f g a)	Since: aeson-1.5.1.0
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: These1 f g a -> Value # toEncoding :: These1 f g a -> Encoding # toJSONList :: [These1 f g a] -> Value # toEncodingList :: [These1 f g a] -> Encoding #
(ToJSON a, ToJSON b, ToJSON c, ToJSON d) => ToJSON (a, b, c, d)
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: (a, b, c, d) -> Value # toEncoding :: (a, b, c, d) -> Encoding # toJSONList :: [(a, b, c, d)] -> Value # toEncodingList :: [(a, b, c, d)] -> Encoding #
(ToJSON1 f, ToJSON1 g, ToJSON a) => ToJSON (Product f g a)
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: Product f g a -> Value # toEncoding :: Product f g a -> Encoding # toJSONList :: [Product f g a] -> Value # toEncodingList :: [Product f g a] -> Encoding #
(ToJSON1 f, ToJSON1 g, ToJSON a) => ToJSON (Sum f g a)
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: Sum f g a -> Value # toEncoding :: Sum f g a -> Encoding # toJSONList :: [Sum f g a] -> Value # toEncodingList :: [Sum f g a] -> Encoding #
(ToJSON a, ToJSON b, ToJSON c, ToJSON d, ToJSON e) => ToJSON (a, b, c, d, e)
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: (a, b, c, d, e) -> Value # toEncoding :: (a, b, c, d, e) -> Encoding # toJSONList :: [(a, b, c, d, e)] -> Value # toEncodingList :: [(a, b, c, d, e)] -> Encoding #
(ToJSON1 f, ToJSON1 g, ToJSON a) => ToJSON (Compose f g a)
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: Compose f g a -> Value # toEncoding :: Compose f g a -> Encoding # toJSONList :: [Compose f g a] -> Value # toEncodingList :: [Compose f g a] -> Encoding #
(ToJSON a, ToJSON b, ToJSON c, ToJSON d, ToJSON e, ToJSON f) => ToJSON (a, b, c, d, e, f)
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: (a, b, c, d, e, f) -> Value # toEncoding :: (a, b, c, d, e, f) -> Encoding # toJSONList :: [(a, b, c, d, e, f)] -> Value # toEncodingList :: [(a, b, c, d, e, f)] -> Encoding #
(ToJSON a, ToJSON b, ToJSON c, ToJSON d, ToJSON e, ToJSON f, ToJSON g) => ToJSON (a, b, c, d, e, f, g)
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: (a, b, c, d, e, f, g) -> Value # toEncoding :: (a, b, c, d, e, f, g) -> Encoding # toJSONList :: [(a, b, c, d, e, f, g)] -> Value # toEncodingList :: [(a, b, c, d, e, f, g)] -> Encoding #
(ToJSON a, ToJSON b, ToJSON c, ToJSON d, ToJSON e, ToJSON f, ToJSON g, ToJSON h) => ToJSON (a, b, c, d, e, f, g, h)
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: (a, b, c, d, e, f, g, h) -> Value # toEncoding :: (a, b, c, d, e, f, g, h) -> Encoding # toJSONList :: [(a, b, c, d, e, f, g, h)] -> Value # toEncodingList :: [(a, b, c, d, e, f, g, h)] -> Encoding #
(ToJSON a, ToJSON b, ToJSON c, ToJSON d, ToJSON e, ToJSON f, ToJSON g, ToJSON h, ToJSON i) => ToJSON (a, b, c, d, e, f, g, h, i)
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: (a, b, c, d, e, f, g, h, i) -> Value # toEncoding :: (a, b, c, d, e, f, g, h, i) -> Encoding # toJSONList :: [(a, b, c, d, e, f, g, h, i)] -> Value # toEncodingList :: [(a, b, c, d, e, f, g, h, i)] -> Encoding #
(ToJSON a, ToJSON b, ToJSON c, ToJSON d, ToJSON e, ToJSON f, ToJSON g, ToJSON h, ToJSON i, ToJSON j) => ToJSON (a, b, c, d, e, f, g, h, i, j)
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: (a, b, c, d, e, f, g, h, i, j) -> Value # toEncoding :: (a, b, c, d, e, f, g, h, i, j) -> Encoding # toJSONList :: [(a, b, c, d, e, f, g, h, i, j)] -> Value # toEncodingList :: [(a, b, c, d, e, f, g, h, i, j)] -> Encoding #
(ToJSON a, ToJSON b, ToJSON c, ToJSON d, ToJSON e, ToJSON f, ToJSON g, ToJSON h, ToJSON i, ToJSON j, ToJSON k) => ToJSON (a, b, c, d, e, f, g, h, i, j, k)
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: (a, b, c, d, e, f, g, h, i, j, k) -> Value # toEncoding :: (a, b, c, d, e, f, g, h, i, j, k) -> Encoding # toJSONList :: [(a, b, c, d, e, f, g, h, i, j, k)] -> Value # toEncodingList :: [(a, b, c, d, e, f, g, h, i, j, k)] -> Encoding #
(ToJSON a, ToJSON b, ToJSON c, ToJSON d, ToJSON e, ToJSON f, ToJSON g, ToJSON h, ToJSON i, ToJSON j, ToJSON k, ToJSON l) => ToJSON (a, b, c, d, e, f, g, h, i, j, k, l)
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: (a, b, c, d, e, f, g, h, i, j, k, l) -> Value # toEncoding :: (a, b, c, d, e, f, g, h, i, j, k, l) -> Encoding # toJSONList :: [(a, b, c, d, e, f, g, h, i, j, k, l)] -> Value # toEncodingList :: [(a, b, c, d, e, f, g, h, i, j, k, l)] -> Encoding #
(ToJSON a, ToJSON b, ToJSON c, ToJSON d, ToJSON e, ToJSON f, ToJSON g, ToJSON h, ToJSON i, ToJSON j, ToJSON k, ToJSON l, ToJSON m) => ToJSON (a, b, c, d, e, f, g, h, i, j, k, l, m)
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: (a, b, c, d, e, f, g, h, i, j, k, l, m) -> Value # toEncoding :: (a, b, c, d, e, f, g, h, i, j, k, l, m) -> Encoding # toJSONList :: [(a, b, c, d, e, f, g, h, i, j, k, l, m)] -> Value # toEncodingList :: [(a, b, c, d, e, f, g, h, i, j, k, l, m)] -> Encoding #
(ToJSON a, ToJSON b, ToJSON c, ToJSON d, ToJSON e, ToJSON f, ToJSON g, ToJSON h, ToJSON i, ToJSON j, ToJSON k, ToJSON l, ToJSON m, ToJSON n) => ToJSON (a, b, c, d, e, f, g, h, i, j, k, l, m, n)
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: (a, b, c, d, e, f, g, h, i, j, k, l, m, n) -> Value # toEncoding :: (a, b, c, d, e, f, g, h, i, j, k, l, m, n) -> Encoding # toJSONList :: [(a, b, c, d, e, f, g, h, i, j, k, l, m, n)] -> Value # toEncodingList :: [(a, b, c, d, e, f, g, h, i, j, k, l, m, n)] -> Encoding #
(ToJSON a, ToJSON b, ToJSON c, ToJSON d, ToJSON e, ToJSON f, ToJSON g, ToJSON h, ToJSON i, ToJSON j, ToJSON k, ToJSON l, ToJSON m, ToJSON n, ToJSON o) => ToJSON (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o)
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o) -> Value # toEncoding :: (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o) -> Encoding # toJSONList :: [(a, b, c, d, e, f, g, h, i, j, k, l, m, n, o)] -> Value # toEncodingList :: [(a, b, c, d, e, f, g, h, i, j, k, l, m, n, o)] -> Encoding #

(.=) :: (KeyValue kv, ToJSON v) => Text -> v -> kv infixr 8 #

(.:) :: FromJSON a => Object -> Text -> Parser a #

Retrieve the value associated with the given key of an Object. The result is empty if the key is not present or the value cannot be converted to the desired type.

This accessor is appropriate if the key and value must be present in an object for it to be valid. If the key and value are optional, use .:? instead.

class FromJSON a where #

A type that can be converted from JSON, with the possibility of failure.

In many cases, you can get the compiler to generate parsing code for you (see below). To begin, let's cover writing an instance by hand.

There are various reasons a conversion could fail. For example, an Object could be missing a required key, an Array could be of the wrong size, or a value could be of an incompatible type.

The basic ways to signal a failed conversion are as follows:

fail yields a custom error message: it is the recommended way of reporting a failure;
empty (or mzero) is uninformative: use it when the error is meant to be caught by some (<|>);
typeMismatch can be used to report a failure when the encountered value is not of the expected JSON type; unexpected is an appropriate alternative when more than one type may be expected, or to keep the expected type implicit.

prependFailure (or modifyFailure) add more information to a parser's error messages.

An example type and instance using typeMismatch and prependFailure:

-- Allow ourselves to write Text literals.
{-# LANGUAGE OverloadedStrings #-}

data Coord = Coord { x :: Double, y :: Double }

instance FromJSON Coord where
    parseJSON (Object v) = Coord
        <$> v .: "x"
        <*> v .: "y"

    -- We do not expect a non-Object value here.
    -- We could use empty to fail, but typeMismatch
    -- gives a much more informative error message.
    parseJSON invalid    =
        prependFailure "parsing Coord failed, "
            (typeMismatch "Object" invalid)

For this common case of only being concerned with a single type of JSON value, the functions withObject, withScientific, etc. are provided. Their use is to be preferred when possible, since they are more terse. Using withObject, we can rewrite the above instance (assuming the same language extension and data type) as:

instance FromJSON Coord where
    parseJSON = withObject "Coord" $ \v -> Coord
        <$> v .: "x"
        <*> v .: "y"

Instead of manually writing your FromJSON instance, there are two options to do it automatically:

Data.Aeson.TH provides Template Haskell functions which will derive an instance at compile time. The generated instance is optimized for your type so it will probably be more efficient than the following option.
The compiler can provide a default generic implementation for parseJSON.

To use the second, simply add a deriving Generic clause to your datatype and declare a FromJSON instance for your datatype without giving a definition for parseJSON.

For example, the previous example can be simplified to just:

{-# LANGUAGE DeriveGeneric #-}

import GHC.Generics

data Coord = Coord { x :: Double, y :: Double } deriving Generic

instance FromJSON Coord

The default implementation will be equivalent to parseJSON = genericParseJSON defaultOptions; if you need different options, you can customize the generic decoding by defining:

customOptions = defaultOptions
                { fieldLabelModifier = map toUpper
                }

instance FromJSON Coord where
    parseJSON = genericParseJSON customOptions

Minimal complete definition

Nothing

Methods

parseJSON :: Value -> Parser a #

parseJSONList :: Value -> Parser [a] #

Instances

Instances details

FromJSON Bool
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser Bool # parseJSONList :: Value -> Parser [Bool] #
FromJSON Char
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser Char # parseJSONList :: Value -> Parser [Char] #
FromJSON Double
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser Double # parseJSONList :: Value -> Parser [Double] #
FromJSON Float
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser Float # parseJSONList :: Value -> Parser [Float] #
FromJSON Int
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser Int # parseJSONList :: Value -> Parser [Int] #
FromJSON Int8
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser Int8 # parseJSONList :: Value -> Parser [Int8] #
FromJSON Int16
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser Int16 # parseJSONList :: Value -> Parser [Int16] #
FromJSON Int32
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser Int32 # parseJSONList :: Value -> Parser [Int32] #
FromJSON Int64
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser Int64 # parseJSONList :: Value -> Parser [Int64] #
FromJSON Integer	This instance includes a bounds check to prevent maliciously large inputs to fill up the memory of the target system. You can newtype `Scientific` and provide your own instance using `withScientific` if you want to allow larger inputs.
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser Integer # parseJSONList :: Value -> Parser [Integer] #
FromJSON Natural
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser Natural # parseJSONList :: Value -> Parser [Natural] #
FromJSON Ordering
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser Ordering # parseJSONList :: Value -> Parser [Ordering] #
FromJSON Word
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser Word # parseJSONList :: Value -> Parser [Word] #
FromJSON Word8
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser Word8 # parseJSONList :: Value -> Parser [Word8] #
FromJSON Word16
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser Word16 # parseJSONList :: Value -> Parser [Word16] #
FromJSON Word32
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser Word32 # parseJSONList :: Value -> Parser [Word32] #
FromJSON Word64
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser Word64 # parseJSONList :: Value -> Parser [Word64] #
FromJSON ()
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser () # parseJSONList :: Value -> Parser [()] #
FromJSON Version
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser Version # parseJSONList :: Value -> Parser [Version] #
FromJSON Scientific
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser Scientific # parseJSONList :: Value -> Parser [Scientific] #
FromJSON Text
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser Text # parseJSONList :: Value -> Parser [Text] #
FromJSON UTCTime
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser UTCTime # parseJSONList :: Value -> Parser [UTCTime] #
FromJSON Value
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser Value # parseJSONList :: Value -> Parser [Value] #
FromJSON DotNetTime
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser DotNetTime # parseJSONList :: Value -> Parser [DotNetTime] #
FromJSON Text
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser Text # parseJSONList :: Value -> Parser [Text] #
FromJSON Void
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser Void # parseJSONList :: Value -> Parser [Void] #
FromJSON CTime
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser CTime # parseJSONList :: Value -> Parser [CTime] #
FromJSON IntSet
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser IntSet # parseJSONList :: Value -> Parser [IntSet] #
FromJSON PersistValue
Instance details Defined in Database.Persist.PersistValue Methods parseJSON :: Value -> Parser PersistValue # parseJSONList :: Value -> Parser [PersistValue] #
FromJSON ZonedTime	Supported string formats: `YYYY-MM-DD HH:MM Z` `YYYY-MM-DD HH:MM:SS Z` `YYYY-MM-DD HH:MM:SS.SSS Z` The first space may instead be a `T`, and the second space is optional. The `Z` represents UTC. The `Z` may be replaced with a time zone offset of the form `+0000` or `-08:00`, where the first two digits are hours, the `:` is optional and the second two digits (also optional) are minutes.
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser ZonedTime # parseJSONList :: Value -> Parser [ZonedTime] #
FromJSON LocalTime
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser LocalTime # parseJSONList :: Value -> Parser [LocalTime] #
FromJSON TimeOfDay
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser TimeOfDay # parseJSONList :: Value -> Parser [TimeOfDay] #
FromJSON CalendarDiffTime
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser CalendarDiffTime # parseJSONList :: Value -> Parser [CalendarDiffTime] #
FromJSON SystemTime
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser SystemTime # parseJSONList :: Value -> Parser [SystemTime] #
FromJSON NominalDiffTime	This instance includes a bounds check to prevent maliciously large inputs to fill up the memory of the target system. You can newtype `Scientific` and provide your own instance using `withScientific` if you want to allow larger inputs.
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser NominalDiffTime # parseJSONList :: Value -> Parser [NominalDiffTime] #
FromJSON DiffTime	This instance includes a bounds check to prevent maliciously large inputs to fill up the memory of the target system. You can newtype `Scientific` and provide your own instance using `withScientific` if you want to allow larger inputs.
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser DiffTime # parseJSONList :: Value -> Parser [DiffTime] #
FromJSON DayOfWeek
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser DayOfWeek # parseJSONList :: Value -> Parser [DayOfWeek] #
FromJSON Day
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser Day # parseJSONList :: Value -> Parser [Day] #
FromJSON CalendarDiffDays
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser CalendarDiffDays # parseJSONList :: Value -> Parser [CalendarDiffDays] #
FromJSON QuarterOfYear
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser QuarterOfYear # parseJSONList :: Value -> Parser [QuarterOfYear] #
FromJSON Quarter
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser Quarter # parseJSONList :: Value -> Parser [Quarter] #
FromJSON Month
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser Month # parseJSONList :: Value -> Parser [Month] #
FromJSON UUID
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser UUID # parseJSONList :: Value -> Parser [UUID] #
FromJSON Textarea
Instance details Defined in Yesod.Form.Fields Methods parseJSON :: Value -> Parser Textarea # parseJSONList :: Value -> Parser [Textarea] #
FromJSON a => FromJSON [a]
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser [a] # parseJSONList :: Value -> Parser [[a]] #
FromJSON a => FromJSON (Maybe a)
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser (Maybe a) # parseJSONList :: Value -> Parser [Maybe a] #
(FromJSON a, Integral a) => FromJSON (Ratio a)
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser (Ratio a) # parseJSONList :: Value -> Parser [Ratio a] #
FromJSON a => FromJSON (Min a)
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser (Min a) # parseJSONList :: Value -> Parser [Min a] #
FromJSON a => FromJSON (Max a)
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser (Max a) # parseJSONList :: Value -> Parser [Max a] #
FromJSON a => FromJSON (First a)
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser (First a) # parseJSONList :: Value -> Parser [First a] #
FromJSON a => FromJSON (Last a)
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser (Last a) # parseJSONList :: Value -> Parser [Last a] #
FromJSON a => FromJSON (WrappedMonoid a)
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser (WrappedMonoid a) # parseJSONList :: Value -> Parser [WrappedMonoid a] #
FromJSON a => FromJSON (Option a)
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser (Option a) # parseJSONList :: Value -> Parser [Option a] #
FromJSON a => FromJSON (Identity a)
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser (Identity a) # parseJSONList :: Value -> Parser [Identity a] #
FromJSON a => FromJSON (First a)
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser (First a) # parseJSONList :: Value -> Parser [First a] #
FromJSON a => FromJSON (Last a)
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser (Last a) # parseJSONList :: Value -> Parser [Last a] #
FromJSON a => FromJSON (Dual a)
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser (Dual a) # parseJSONList :: Value -> Parser [Dual a] #
FromJSON a => FromJSON (NonEmpty a)
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser (NonEmpty a) # parseJSONList :: Value -> Parser [NonEmpty a] #
FromJSON a => FromJSON (IntMap a)
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser (IntMap a) # parseJSONList :: Value -> Parser [IntMap a] #
FromJSON v => FromJSON (Tree v)
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser (Tree v) # parseJSONList :: Value -> Parser [Tree v] #
FromJSON a => FromJSON (Seq a)
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser (Seq a) # parseJSONList :: Value -> Parser [Seq a] #
(Ord a, FromJSON a) => FromJSON (Set a)
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser (Set a) # parseJSONList :: Value -> Parser [Set a] #
FromJSON1 f => FromJSON (Fix f)	Since: aeson-1.5.3.0
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser (Fix f) # parseJSONList :: Value -> Parser [Fix f] #
(FromJSON1 f, Functor f) => FromJSON (Mu f)	Since: aeson-1.5.3.0
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser (Mu f) # parseJSONList :: Value -> Parser [Mu f] #
(FromJSON1 f, Functor f) => FromJSON (Nu f)	Since: aeson-1.5.3.0
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser (Nu f) # parseJSONList :: Value -> Parser [Nu f] #
FromJSON a => FromJSON (DNonEmpty a)	Since: aeson-1.5.3.0
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser (DNonEmpty a) # parseJSONList :: Value -> Parser [DNonEmpty a] #
FromJSON a => FromJSON (DList a)
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser (DList a) # parseJSONList :: Value -> Parser [DList a] #
(Prim a, FromJSON a) => FromJSON (PrimArray a)
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser (PrimArray a) # parseJSONList :: Value -> Parser [PrimArray a] #
FromJSON a => FromJSON (SmallArray a)
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser (SmallArray a) # parseJSONList :: Value -> Parser [SmallArray a] #
FromJSON a => FromJSON (Array a)
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser (Array a) # parseJSONList :: Value -> Parser [Array a] #
FromJSON a => FromJSON (Maybe a)	Since: aeson-1.5.3.0
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser (Maybe a) # parseJSONList :: Value -> Parser [Maybe a] #
(Eq a, Hashable a, FromJSON a) => FromJSON (HashSet a)
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser (HashSet a) # parseJSONList :: Value -> Parser [HashSet a] #
(Vector Vector a, FromJSON a) => FromJSON (Vector a)
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser (Vector a) # parseJSONList :: Value -> Parser [Vector a] #
(Storable a, FromJSON a) => FromJSON (Vector a)
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser (Vector a) # parseJSONList :: Value -> Parser [Vector a] #
(Prim a, FromJSON a) => FromJSON (Vector a)
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser (Vector a) # parseJSONList :: Value -> Parser [Vector a] #
FromJSON a => FromJSON (Vector a)
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser (Vector a) # parseJSONList :: Value -> Parser [Vector a] #
(FromJSON a, FromJSON b) => FromJSON (Either a b)
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser (Either a b) # parseJSONList :: Value -> Parser [Either a b] #
(FromJSON a, FromJSON b) => FromJSON (a, b)
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser (a, b) # parseJSONList :: Value -> Parser [(a, b)] #
(FromJSON v, FromJSONKey k, Eq k, Hashable k) => FromJSON (HashMap k v)
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser (HashMap k v) # parseJSONList :: Value -> Parser [HashMap k v] #
(FromJSONKey k, Ord k, FromJSON v) => FromJSON (Map k v)
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser (Map k v) # parseJSONList :: Value -> Parser [Map k v] #
HasResolution a => FromJSON (Fixed a)	This instance includes a bounds check to prevent maliciously large inputs to fill up the memory of the target system. You can newtype `Scientific` and provide your own instance using `withScientific` if you want to allow larger inputs.
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser (Fixed a) # parseJSONList :: Value -> Parser [Fixed a] #
FromJSON (Proxy a)
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser (Proxy a) # parseJSONList :: Value -> Parser [Proxy a] #
(FromJSON a, FromJSON b) => FromJSON (Pair a b)	Since: aeson-1.5.3.0
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser (Pair a b) # parseJSONList :: Value -> Parser [Pair a b] #
(FromJSON a, FromJSON b) => FromJSON (These a b)	Since: aeson-1.5.3.0
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser (These a b) # parseJSONList :: Value -> Parser [These a b] #
(FromJSON a, FromJSON b) => FromJSON (Either a b)	Since: aeson-1.5.3.0
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser (Either a b) # parseJSONList :: Value -> Parser [Either a b] #
(FromJSON a, FromJSON b) => FromJSON (These a b)	Since: aeson-1.5.1.0
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser (These a b) # parseJSONList :: Value -> Parser [These a b] #
(FromJSON a, FromJSON b, FromJSON c) => FromJSON (a, b, c)
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser (a, b, c) # parseJSONList :: Value -> Parser [(a, b, c)] #
FromJSON a => FromJSON (Const a b)
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser (Const a b) # parseJSONList :: Value -> Parser [Const a b] #
FromJSON b => FromJSON (Tagged a b)
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser (Tagged a b) # parseJSONList :: Value -> Parser [Tagged a b] #
(FromJSON1 f, FromJSON1 g, FromJSON a) => FromJSON (These1 f g a)	Since: aeson-1.5.1.0
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser (These1 f g a) # parseJSONList :: Value -> Parser [These1 f g a] #
(FromJSON a, FromJSON b, FromJSON c, FromJSON d) => FromJSON (a, b, c, d)
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser (a, b, c, d) # parseJSONList :: Value -> Parser [(a, b, c, d)] #
(FromJSON1 f, FromJSON1 g, FromJSON a) => FromJSON (Product f g a)
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser (Product f g a) # parseJSONList :: Value -> Parser [Product f g a] #
(FromJSON1 f, FromJSON1 g, FromJSON a) => FromJSON (Sum f g a)
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser (Sum f g a) # parseJSONList :: Value -> Parser [Sum f g a] #
(FromJSON a, FromJSON b, FromJSON c, FromJSON d, FromJSON e) => FromJSON (a, b, c, d, e)
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser (a, b, c, d, e) # parseJSONList :: Value -> Parser [(a, b, c, d, e)] #
(FromJSON1 f, FromJSON1 g, FromJSON a) => FromJSON (Compose f g a)
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser (Compose f g a) # parseJSONList :: Value -> Parser [Compose f g a] #
(FromJSON a, FromJSON b, FromJSON c, FromJSON d, FromJSON e, FromJSON f) => FromJSON (a, b, c, d, e, f)
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser (a, b, c, d, e, f) # parseJSONList :: Value -> Parser [(a, b, c, d, e, f)] #
(FromJSON a, FromJSON b, FromJSON c, FromJSON d, FromJSON e, FromJSON f, FromJSON g) => FromJSON (a, b, c, d, e, f, g)
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser (a, b, c, d, e, f, g) # parseJSONList :: Value -> Parser [(a, b, c, d, e, f, g)] #
(FromJSON a, FromJSON b, FromJSON c, FromJSON d, FromJSON e, FromJSON f, FromJSON g, FromJSON h) => FromJSON (a, b, c, d, e, f, g, h)
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser (a, b, c, d, e, f, g, h) # parseJSONList :: Value -> Parser [(a, b, c, d, e, f, g, h)] #
(FromJSON a, FromJSON b, FromJSON c, FromJSON d, FromJSON e, FromJSON f, FromJSON g, FromJSON h, FromJSON i) => FromJSON (a, b, c, d, e, f, g, h, i)
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser (a, b, c, d, e, f, g, h, i) # parseJSONList :: Value -> Parser [(a, b, c, d, e, f, g, h, i)] #
(FromJSON a, FromJSON b, FromJSON c, FromJSON d, FromJSON e, FromJSON f, FromJSON g, FromJSON h, FromJSON i, FromJSON j) => FromJSON (a, b, c, d, e, f, g, h, i, j)
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser (a, b, c, d, e, f, g, h, i, j) # parseJSONList :: Value -> Parser [(a, b, c, d, e, f, g, h, i, j)] #
(FromJSON a, FromJSON b, FromJSON c, FromJSON d, FromJSON e, FromJSON f, FromJSON g, FromJSON h, FromJSON i, FromJSON j, FromJSON k) => FromJSON (a, b, c, d, e, f, g, h, i, j, k)
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser (a, b, c, d, e, f, g, h, i, j, k) # parseJSONList :: Value -> Parser [(a, b, c, d, e, f, g, h, i, j, k)] #
(FromJSON a, FromJSON b, FromJSON c, FromJSON d, FromJSON e, FromJSON f, FromJSON g, FromJSON h, FromJSON i, FromJSON j, FromJSON k, FromJSON l) => FromJSON (a, b, c, d, e, f, g, h, i, j, k, l)
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser (a, b, c, d, e, f, g, h, i, j, k, l) # parseJSONList :: Value -> Parser [(a, b, c, d, e, f, g, h, i, j, k, l)] #
(FromJSON a, FromJSON b, FromJSON c, FromJSON d, FromJSON e, FromJSON f, FromJSON g, FromJSON h, FromJSON i, FromJSON j, FromJSON k, FromJSON l, FromJSON m) => FromJSON (a, b, c, d, e, f, g, h, i, j, k, l, m)
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser (a, b, c, d, e, f, g, h, i, j, k, l, m) # parseJSONList :: Value -> Parser [(a, b, c, d, e, f, g, h, i, j, k, l, m)] #
(FromJSON a, FromJSON b, FromJSON c, FromJSON d, FromJSON e, FromJSON f, FromJSON g, FromJSON h, FromJSON i, FromJSON j, FromJSON k, FromJSON l, FromJSON m, FromJSON n) => FromJSON (a, b, c, d, e, f, g, h, i, j, k, l, m, n)
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser (a, b, c, d, e, f, g, h, i, j, k, l, m, n) # parseJSONList :: Value -> Parser [(a, b, c, d, e, f, g, h, i, j, k, l, m, n)] #
(FromJSON a, FromJSON b, FromJSON c, FromJSON d, FromJSON e, FromJSON f, FromJSON g, FromJSON h, FromJSON i, FromJSON j, FromJSON k, FromJSON l, FromJSON m, FromJSON n, FromJSON o) => FromJSON (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o)
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o) # parseJSONList :: Value -> Parser [(a, b, c, d, e, f, g, h, i, j, k, l, m, n, o)] #

object :: [Pair] -> Value #

Create a Value from a list of name/value Pairs. If duplicate keys arise, earlier keys and their associated values win.

data Value #

A JSON value represented as a Haskell value.

Constructors

Object !Object
Array !Array
String !Text
Number !Scientific
Bool !Bool
Null

Instances

Instances details

Eq Value
Instance details Defined in Data.Aeson.Types.Internal Methods (==) :: Value -> Value -> Bool # (/=) :: Value -> Value -> Bool #
Data Value
Instance details Defined in Data.Aeson.Types.Internal Methods gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> Value -> c Value # gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c Value # toConstr :: Value -> Constr # dataTypeOf :: Value -> DataType # dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c Value) # dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c Value) # gmapT :: (forall b. Data b => b -> b) -> Value -> Value # gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> Value -> r # gmapQr :: forall r r'. (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> Value -> r # gmapQ :: (forall d. Data d => d -> u) -> Value -> [u] # gmapQi :: Int -> (forall d. Data d => d -> u) -> Value -> u # gmapM :: Monad m => (forall d. Data d => d -> m d) -> Value -> m Value # gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> Value -> m Value # gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> Value -> m Value #
Ord Value	The ordering is total, consistent with `Eq` instance. However, nothing else about the ordering is specified, and it may change from environment to environment and version to version of either this package or its dependencies (`hashable` and 'unordered-containers'). Since: aeson-1.5.2.0
Instance details Defined in Data.Aeson.Types.Internal Methods compare :: Value -> Value -> Ordering # (<) :: Value -> Value -> Bool # (<=) :: Value -> Value -> Bool # (>) :: Value -> Value -> Bool # (>=) :: Value -> Value -> Bool # max :: Value -> Value -> Value # min :: Value -> Value -> Value #
Read Value
Instance details Defined in Data.Aeson.Types.Internal Methods readsPrec :: Int -> ReadS Value # readList :: ReadS [Value] # readPrec :: ReadPrec Value # readListPrec :: ReadPrec [Value] #
Show Value	Since version 1.5.6.0 version object values are printed in lexicographic key order `>>>` `toJSON $ H.fromList [("a", True), ("z", False)]`Object (fromList [("a",Bool True),("z",Bool False)]) `>>>` `toJSON $ H.fromList [("z", False), ("a", True)]`Object (fromList [("a",Bool True),("z",Bool False)])
Instance details Defined in Data.Aeson.Types.Internal Methods showsPrec :: Int -> Value -> ShowS # show :: Value -> String # showList :: [Value] -> ShowS #
IsString Value
Instance details Defined in Data.Aeson.Types.Internal Methods fromString :: String -> Value #
Generic Value
Instance details Defined in Data.Aeson.Types.Internal Associated Types type Rep Value :: Type -> Type # Methods from :: Value -> Rep Value x # to :: Rep Value x -> Value #
Hashable Value
Instance details Defined in Data.Aeson.Types.Internal Methods hashWithSalt :: Int -> Value -> Int # hash :: Value -> Int #
ToJSON Value
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: Value -> Value # toEncoding :: Value -> Encoding # toJSONList :: [Value] -> Value # toEncodingList :: [Value] -> Encoding #
KeyValue Object	Constructs a singleton `HashMap`. For calling functions that demand an `Object` for constructing objects. To be used in conjunction with `mconcat`. Prefer to use `object` where possible.
Instance details Defined in Data.Aeson.Types.ToJSON Methods (.=) :: ToJSON v => Text -> v -> Object #
KeyValue Pair
Instance details Defined in Data.Aeson.Types.ToJSON Methods (.=) :: ToJSON v => Text -> v -> Pair #
FromJSON Value
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser Value # parseJSONList :: Value -> Parser [Value] #
NFData Value
Instance details Defined in Data.Aeson.Types.Internal Methods rnf :: Value -> () #
ToJavascript Value
Instance details Defined in Text.Julius Methods toJavascript :: Value -> Javascript #
ToTypedContent Encoding
Instance details Defined in Yesod.Core.Content Methods toTypedContent :: Encoding -> TypedContent #
ToTypedContent Value
Instance details Defined in Yesod.Core.Content Methods toTypedContent :: Value -> TypedContent #
HasContentType Encoding
Instance details Defined in Yesod.Core.Content Methods getContentType :: Monad m => m Encoding -> ContentType #
HasContentType Value
Instance details Defined in Yesod.Core.Content Methods getContentType :: Monad m => m Value -> ContentType #
ToContent Encoding
Instance details Defined in Yesod.Core.Content Methods toContent :: Encoding -> Content #
ToContent Value
Instance details Defined in Yesod.Core.Content Methods toContent :: Value -> Content #
FromString Encoding
Instance details Defined in Data.Aeson.Types.ToJSON Methods fromString :: String -> Encoding
FromString Value
Instance details Defined in Data.Aeson.Types.ToJSON Methods fromString :: String -> Value
Lift Value
Instance details Defined in Data.Aeson.Types.Internal Methods lift :: Value -> Q Exp # liftTyped :: Value -> Q (TExp Value) #
GToJSON' Encoding arity (U1 :: Type -> Type)
Instance details Defined in Data.Aeson.Types.ToJSON Methods gToJSON :: Options -> ToArgs Encoding arity a -> U1 a -> Encoding
GToJSON' Value arity (V1 :: Type -> Type)
Instance details Defined in Data.Aeson.Types.ToJSON Methods gToJSON :: Options -> ToArgs Value arity a -> V1 a -> Value
GToJSON' Value arity (U1 :: Type -> Type)
Instance details Defined in Data.Aeson.Types.ToJSON Methods gToJSON :: Options -> ToArgs Value arity a -> U1 a -> Value
ToJSON1 f => GToJSON' Encoding One (Rec1 f)
Instance details Defined in Data.Aeson.Types.ToJSON Methods gToJSON :: Options -> ToArgs Encoding One a -> Rec1 f a -> Encoding
ToJSON1 f => GToJSON' Value One (Rec1 f)
Instance details Defined in Data.Aeson.Types.ToJSON Methods gToJSON :: Options -> ToArgs Value One a -> Rec1 f a -> Value
ToJSON a => GToJSON' Encoding arity (K1 i a :: Type -> Type)
Instance details Defined in Data.Aeson.Types.ToJSON Methods gToJSON :: Options -> ToArgs Encoding arity a0 -> K1 i a a0 -> Encoding
(EncodeProduct arity a, EncodeProduct arity b) => GToJSON' Encoding arity (a :*: b)
Instance details Defined in Data.Aeson.Types.ToJSON Methods gToJSON :: Options -> ToArgs Encoding arity a0 -> (a :*: b) a0 -> Encoding
ToJSON a => GToJSON' Value arity (K1 i a :: Type -> Type)
Instance details Defined in Data.Aeson.Types.ToJSON Methods gToJSON :: Options -> ToArgs Value arity a0 -> K1 i a a0 -> Value
(WriteProduct arity a, WriteProduct arity b, ProductSize a, ProductSize b) => GToJSON' Value arity (a :*: b)
Instance details Defined in Data.Aeson.Types.ToJSON Methods gToJSON :: Options -> ToArgs Value arity a0 -> (a :*: b) a0 -> Value
(ToJSON1 f, GToJSON' Encoding One g) => GToJSON' Encoding One (f :.: g)
Instance details Defined in Data.Aeson.Types.ToJSON Methods gToJSON :: Options -> ToArgs Encoding One a -> (f :.: g) a -> Encoding
(ToJSON1 f, GToJSON' Value One g) => GToJSON' Value One (f :.: g)
Instance details Defined in Data.Aeson.Types.ToJSON Methods gToJSON :: Options -> ToArgs Value One a -> (f :.: g) a -> Value
FromPairs Value (DList Pair)
Instance details Defined in Data.Aeson.Types.ToJSON Methods fromPairs :: DList Pair -> Value
v ~ Value => KeyValuePair v (DList Pair)
Instance details Defined in Data.Aeson.Types.ToJSON Methods pair :: String -> v -> DList Pair
(GToJSON' Encoding arity a, ConsToJSON Encoding arity a, Constructor c) => SumToJSON' TwoElemArray Encoding arity (C1 c a)
Instance details Defined in Data.Aeson.Types.ToJSON Methods sumToJSON' :: Options -> ToArgs Encoding arity a0 -> C1 c a a0 -> Tagged TwoElemArray Encoding
(GToJSON' Value arity a, ConsToJSON Value arity a, Constructor c) => SumToJSON' TwoElemArray Value arity (C1 c a)
Instance details Defined in Data.Aeson.Types.ToJSON Methods sumToJSON' :: Options -> ToArgs Value arity a0 -> C1 c a a0 -> Tagged TwoElemArray Value
type Rep Value
Instance details Defined in Data.Aeson.Types.Internal type Rep Value = D1 ('MetaData "Value" "Data.Aeson.Types.Internal" "aeson-1.5.6.0-EqVmcrnXxf83qL527zdNDU" 'False) ((C1 ('MetaCons "Object" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 Object)) :+: (C1 ('MetaCons "Array" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 Array)) :+: C1 ('MetaCons "String" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 Text)))) :+: (C1 ('MetaCons "Number" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 Scientific)) :+: (C1 ('MetaCons "Bool" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 Bool)) :+: C1 ('MetaCons "Null" 'PrefixI 'False) (U1 :: Type -> Type))))

class Bifunctor (p :: Type -> Type -> Type) where #

A bifunctor is a type constructor that takes two type arguments and is a functor in both arguments. That is, unlike with Functor, a type constructor such as Either does not need to be partially applied for a Bifunctor instance, and the methods in this class permit mapping functions over the Left value or the Right value, or both at the same time.

Formally, the class Bifunctor represents a bifunctor from Hask -> Hask.

Intuitively it is a bifunctor where both the first and second arguments are covariant.

You can define a Bifunctor by either defining bimap or by defining both first and second.

If you supply bimap, you should ensure that:

bimap id id ≡ id

If you supply first and second, ensure:

first id ≡ id
second id ≡ id

If you supply both, you should also ensure:

bimap f g ≡ first f . second g

These ensure by parametricity:

bimap  (f . g) (h . i) ≡ bimap f h . bimap g i
first  (f . g) ≡ first  f . first  g
second (f . g) ≡ second f . second g

Since: base-4.8.0.0

Minimal complete definition

bimap | first, second

Methods

bimap :: (a -> b) -> (c -> d) -> p a c -> p b d #

Map over both arguments at the same time.

bimap f g ≡ first f . second g

Examples

Expand

>>> bimap toUpper (+1) ('j', 3)
('J',4)

>>> bimap toUpper (+1) (Left 'j')
Left 'J'

>>> bimap toUpper (+1) (Right 3)
Right 4

first :: (a -> b) -> p a c -> p b c #

Map covariantly over the first argument.

first f ≡ bimap f id

Examples

Expand

>>> first toUpper ('j', 3)
('J',3)

>>> first toUpper (Left 'j')
Left 'J'

second :: (b -> c) -> p a b -> p a c #

Map covariantly over the second argument.

second ≡ bimap id

Examples

Expand

>>> second (+1) ('j', 3)
('j',4)

>>> second (+1) (Right 3)
Right 4

Instances

Instances details

Bifunctor Either	Since: base-4.8.0.0
Instance details Defined in Data.Bifunctor Methods bimap :: (a -> b) -> (c -> d) -> Either a c -> Either b d # first :: (a -> b) -> Either a c -> Either b c # second :: (b -> c) -> Either a b -> Either a c #
Bifunctor (,)	Since: base-4.8.0.0
Instance details Defined in Data.Bifunctor Methods bimap :: (a -> b) -> (c -> d) -> (a, c) -> (b, d) # first :: (a -> b) -> (a, c) -> (b, c) # second :: (b -> c) -> (a, b) -> (a, c) #
Bifunctor Arg	Since: base-4.9.0.0
Instance details Defined in Data.Semigroup Methods bimap :: (a -> b) -> (c -> d) -> Arg a c -> Arg b d # first :: (a -> b) -> Arg a c -> Arg b c # second :: (b -> c) -> Arg a b -> Arg a c #
Bifunctor PeriodicReportRow
Instance details Defined in Hledger.Reports.ReportTypes Methods bimap :: (a -> b) -> (c -> d) -> PeriodicReportRow a c -> PeriodicReportRow b d # first :: (a -> b) -> PeriodicReportRow a c -> PeriodicReportRow b c # second :: (b -> c) -> PeriodicReportRow a b -> PeriodicReportRow a c #
Bifunctor PeriodicReport
Instance details Defined in Hledger.Reports.ReportTypes Methods bimap :: (a -> b) -> (c -> d) -> PeriodicReport a c -> PeriodicReport b d # first :: (a -> b) -> PeriodicReport a c -> PeriodicReport b c # second :: (b -> c) -> PeriodicReport a b -> PeriodicReport a c #
Bifunctor Pair
Instance details Defined in Data.Strict.Tuple Methods bimap :: (a -> b) -> (c -> d) -> Pair a c -> Pair b d # first :: (a -> b) -> Pair a c -> Pair b c # second :: (b -> c) -> Pair a b -> Pair a c #
Bifunctor These
Instance details Defined in Data.Strict.These Methods bimap :: (a -> b) -> (c -> d) -> These a c -> These b d # first :: (a -> b) -> These a c -> These b c # second :: (b -> c) -> These a b -> These a c #
Bifunctor Either
Instance details Defined in Data.Strict.Either Methods bimap :: (a -> b) -> (c -> d) -> Either a c -> Either b d # first :: (a -> b) -> Either a c -> Either b c # second :: (b -> c) -> Either a b -> Either a c #
Bifunctor These
Instance details Defined in Data.These Methods bimap :: (a -> b) -> (c -> d) -> These a c -> These b d # first :: (a -> b) -> These a c -> These b c # second :: (b -> c) -> These a b -> These a c #
Bifunctor ((,,) x1)	Since: base-4.8.0.0
Instance details Defined in Data.Bifunctor Methods bimap :: (a -> b) -> (c -> d) -> (x1, a, c) -> (x1, b, d) # first :: (a -> b) -> (x1, a, c) -> (x1, b, c) # second :: (b -> c) -> (x1, a, b) -> (x1, a, c) #
Bifunctor (Const :: Type -> Type -> Type)	Since: base-4.8.0.0
Instance details Defined in Data.Bifunctor Methods bimap :: (a -> b) -> (c -> d) -> Const a c -> Const b d # first :: (a -> b) -> Const a c -> Const b c # second :: (b -> c) -> Const a b -> Const a c #
Bifunctor (Tagged :: Type -> Type -> Type)
Instance details Defined in Data.Tagged Methods bimap :: (a -> b) -> (c -> d) -> Tagged a c -> Tagged b d # first :: (a -> b) -> Tagged a c -> Tagged b c # second :: (b -> c) -> Tagged a b -> Tagged a c #
Bifunctor (K1 i :: Type -> Type -> Type)	Since: base-4.9.0.0
Instance details Defined in Data.Bifunctor Methods bimap :: (a -> b) -> (c -> d) -> K1 i a c -> K1 i b d # first :: (a -> b) -> K1 i a c -> K1 i b c # second :: (b -> c) -> K1 i a b -> K1 i a c #
Bifunctor ((,,,) x1 x2)	Since: base-4.8.0.0
Instance details Defined in Data.Bifunctor Methods bimap :: (a -> b) -> (c -> d) -> (x1, x2, a, c) -> (x1, x2, b, d) # first :: (a -> b) -> (x1, x2, a, c) -> (x1, x2, b, c) # second :: (b -> c) -> (x1, x2, a, b) -> (x1, x2, a, c) #
Bifunctor ((,,,,) x1 x2 x3)	Since: base-4.8.0.0
Instance details Defined in Data.Bifunctor Methods bimap :: (a -> b) -> (c -> d) -> (x1, x2, x3, a, c) -> (x1, x2, x3, b, d) # first :: (a -> b) -> (x1, x2, x3, a, c) -> (x1, x2, x3, b, c) # second :: (b -> c) -> (x1, x2, x3, a, b) -> (x1, x2, x3, a, c) #
Bifunctor p => Bifunctor (Flip p)
Instance details Defined in Data.Bifunctor.Flip Methods bimap :: (a -> b) -> (c -> d) -> Flip p a c -> Flip p b d # first :: (a -> b) -> Flip p a c -> Flip p b c # second :: (b -> c) -> Flip p a b -> Flip p a c #
Bifunctor ((,,,,,) x1 x2 x3 x4)	Since: base-4.8.0.0
Instance details Defined in Data.Bifunctor Methods bimap :: (a -> b) -> (c -> d) -> (x1, x2, x3, x4, a, c) -> (x1, x2, x3, x4, b, d) # first :: (a -> b) -> (x1, x2, x3, x4, a, c) -> (x1, x2, x3, x4, b, c) # second :: (b -> c) -> (x1, x2, x3, x4, a, b) -> (x1, x2, x3, x4, a, c) #
(Bifunctor p, Bifunctor q) => Bifunctor (Sum p q)
Instance details Defined in Data.Bifunctor.Sum Methods bimap :: (a -> b) -> (c -> d) -> Sum p q a c -> Sum p q b d # first :: (a -> b) -> Sum p q a c -> Sum p q b c # second :: (b -> c) -> Sum p q a b -> Sum p q a c #
(Bifunctor f, Bifunctor g) => Bifunctor (Product f g)
Instance details Defined in Data.Bifunctor.Product Methods bimap :: (a -> b) -> (c -> d) -> Product f g a c -> Product f g b d # first :: (a -> b) -> Product f g a c -> Product f g b c # second :: (b -> c) -> Product f g a b -> Product f g a c #
Bifunctor ((,,,,,,) x1 x2 x3 x4 x5)	Since: base-4.8.0.0
Instance details Defined in Data.Bifunctor Methods bimap :: (a -> b) -> (c -> d) -> (x1, x2, x3, x4, x5, a, c) -> (x1, x2, x3, x4, x5, b, d) # first :: (a -> b) -> (x1, x2, x3, x4, x5, a, c) -> (x1, x2, x3, x4, x5, b, c) # second :: (b -> c) -> (x1, x2, x3, x4, x5, a, b) -> (x1, x2, x3, x4, x5, a, c) #
(Functor f, Bifunctor p) => Bifunctor (Tannen f p)
Instance details Defined in Data.Bifunctor.Tannen Methods bimap :: (a -> b) -> (c -> d) -> Tannen f p a c -> Tannen f p b d # first :: (a -> b) -> Tannen f p a c -> Tannen f p b c # second :: (b -> c) -> Tannen f p a b -> Tannen f p a c #
(Bifunctor p, Functor f, Functor g) => Bifunctor (Biff p f g)
Instance details Defined in Data.Bifunctor.Biff Methods bimap :: (a -> b) -> (c -> d) -> Biff p f g a c -> Biff p f g b d # first :: (a -> b) -> Biff p f g a c -> Biff p f g b c # second :: (b -> c) -> Biff p f g a b -> Biff p f g a c #

forM_ :: (Foldable t, Monad m) => t a -> (a -> m b) -> m () #

forM_ is mapM_ with its arguments flipped. For a version that doesn't ignore the results see forM.

As of base 4.8.0.0, forM_ is just for_, specialized to Monad.

mapM_ :: (Foldable t, Monad m) => (a -> m b) -> t a -> m () #

Map each element of a structure to a monadic action, evaluate these actions from left to right, and ignore the results. For a version that doesn't ignore the results see mapM.

As of base 4.8.0.0, mapM_ is just traverse_, specialized to Monad.

read :: Read a => String -> a #

The read function reads input from a string, which must be completely consumed by the input process. read fails with an error if the parse is unsuccessful, and it is therefore discouraged from being used in real applications. Use readMaybe or readEither for safe alternatives.

>>> read "123" :: Int
123

>>> read "hello" :: Int
*** Exception: Prelude.read: no parse

class (Alternative m, Monad m) => MonadPlus (m :: Type -> Type) where #

Monads that also support choice and failure.

Minimal complete definition

Nothing

Methods

mzero :: m a #

The identity of mplus. It should also satisfy the equations

mzero >>= f  =  mzero
v >> mzero   =  mzero

The default definition is

mzero = empty

mplus :: m a -> m a -> m a #

An associative operation. The default definition is

mplus = (<|>)

Instances

Instances details

MonadPlus []	Since: base-2.1
Instance details Defined in GHC.Base Methods mzero :: [a] # mplus :: [a] -> [a] -> [a] #
MonadPlus Maybe	Since: base-2.1
Instance details Defined in GHC.Base Methods mzero :: Maybe a # mplus :: Maybe a -> Maybe a -> Maybe a #
MonadPlus IO	Since: base-4.9.0.0
Instance details Defined in GHC.Base Methods mzero :: IO a # mplus :: IO a -> IO a -> IO a #
MonadPlus IResult
Instance details Defined in Data.Aeson.Types.Internal Methods mzero :: IResult a # mplus :: IResult a -> IResult a -> IResult a #
MonadPlus Result
Instance details Defined in Data.Aeson.Types.Internal Methods mzero :: Result a # mplus :: Result a -> Result a -> Result a #
MonadPlus Parser
Instance details Defined in Data.Aeson.Types.Internal Methods mzero :: Parser a # mplus :: Parser a -> Parser a -> Parser a #
MonadPlus Option	Since: base-4.9.0.0
Instance details Defined in Data.Semigroup Methods mzero :: Option a # mplus :: Option a -> Option a -> Option a #
MonadPlus ReadPrec	Since: base-2.1
Instance details Defined in Text.ParserCombinators.ReadPrec Methods mzero :: ReadPrec a # mplus :: ReadPrec a -> ReadPrec a -> ReadPrec a #
MonadPlus ReadP	Since: base-2.1
Instance details Defined in Text.ParserCombinators.ReadP Methods mzero :: ReadP a # mplus :: ReadP a -> ReadP a -> ReadP a #
MonadPlus Seq
Instance details Defined in Data.Sequence.Internal Methods mzero :: Seq a # mplus :: Seq a -> Seq a -> Seq a #
MonadPlus DList
Instance details Defined in Data.DList.Internal Methods mzero :: DList a # mplus :: DList a -> DList a -> DList a #
MonadPlus Root
Instance details Defined in Numeric.RootFinding Methods mzero :: Root a # mplus :: Root a -> Root a -> Root a #
MonadPlus SmallArray
Instance details Defined in Data.Primitive.SmallArray Methods mzero :: SmallArray a # mplus :: SmallArray a -> SmallArray a -> SmallArray a #
MonadPlus Array
Instance details Defined in Data.Primitive.Array Methods mzero :: Array a # mplus :: Array a -> Array a -> Array a #
MonadPlus Vector
Instance details Defined in Data.Vector Methods mzero :: Vector a # mplus :: Vector a -> Vector a -> Vector a #
MonadPlus P	Since: base-2.1
Instance details Defined in Text.ParserCombinators.ReadP Methods mzero :: P a # mplus :: P a -> P a -> P a #
MonadPlus (U1 :: Type -> Type)	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Methods mzero :: U1 a # mplus :: U1 a -> U1 a -> U1 a #
MonadPlus (Parser i)
Instance details Defined in Data.Attoparsec.Internal.Types Methods mzero :: Parser i a # mplus :: Parser i a -> Parser i a -> Parser i a #
(ArrowApply a, ArrowPlus a) => MonadPlus (ArrowMonad a)	Since: base-4.6.0.0
Instance details Defined in Control.Arrow Methods mzero :: ArrowMonad a a0 # mplus :: ArrowMonad a a0 -> ArrowMonad a a0 -> ArrowMonad a a0 #
MonadPlus (Proxy :: Type -> Type)	Since: base-4.9.0.0
Instance details Defined in Data.Proxy Methods mzero :: Proxy a # mplus :: Proxy a -> Proxy a -> Proxy a #
Monad m => MonadPlus (MaybeT m)
Instance details Defined in Control.Monad.Trans.Maybe Methods mzero :: MaybeT m a # mplus :: MaybeT m a -> MaybeT m a -> MaybeT m a #
MonadPlus m => MonadPlus (ResourceT m)	Since 1.1.5
Instance details Defined in Control.Monad.Trans.Resource.Internal Methods mzero :: ResourceT m a # mplus :: ResourceT m a -> ResourceT m a -> ResourceT m a #
Monad m => MonadPlus (ListT m)
Instance details Defined in Control.Monad.Trans.List Methods mzero :: ListT m a # mplus :: ListT m a -> ListT m a -> ListT m a #
MonadPlus f => MonadPlus (Rec1 f)	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Methods mzero :: Rec1 f a # mplus :: Rec1 f a -> Rec1 f a -> Rec1 f a #
MonadPlus m => MonadPlus (Kleisli m a)	Since: base-4.14.0.0
Instance details Defined in Control.Arrow Methods mzero :: Kleisli m a a0 # mplus :: Kleisli m a a0 -> Kleisli m a a0 -> Kleisli m a a0 #
MonadPlus f => MonadPlus (Ap f)	Since: base-4.12.0.0
Instance details Defined in Data.Monoid Methods mzero :: Ap f a # mplus :: Ap f a -> Ap f a -> Ap f a #
MonadPlus f => MonadPlus (Alt f)	Since: base-4.8.0.0
Instance details Defined in Data.Semigroup.Internal Methods mzero :: Alt f a # mplus :: Alt f a -> Alt f a -> Alt f a #
MonadPlus m => MonadPlus (IdentityT m)
Instance details Defined in Control.Monad.Trans.Identity Methods mzero :: IdentityT m a # mplus :: IdentityT m a -> IdentityT m a -> IdentityT m a #
(Monoid w, MonadPlus m) => MonadPlus (WriterT w m)
Instance details Defined in Control.Monad.Trans.Writer.Strict Methods mzero :: WriterT w m a # mplus :: WriterT w m a -> WriterT w m a -> WriterT w m a #
(Monoid w, MonadPlus m) => MonadPlus (WriterT w m)
Instance details Defined in Control.Monad.Trans.Writer.Lazy Methods mzero :: WriterT w m a # mplus :: WriterT w m a -> WriterT w m a -> WriterT w m a #
MonadPlus m => MonadPlus (StateT s m)
Instance details Defined in Control.Monad.Trans.State.Strict Methods mzero :: StateT s m a # mplus :: StateT s m a -> StateT s m a -> StateT s m a #
MonadPlus m => MonadPlus (StateT s m)
Instance details Defined in Control.Monad.Trans.State.Lazy Methods mzero :: StateT s m a # mplus :: StateT s m a -> StateT s m a -> StateT s m a #
MonadPlus m => MonadPlus (ReaderT r m)
Instance details Defined in Control.Monad.Trans.Reader Methods mzero :: ReaderT r m a # mplus :: ReaderT r m a -> ReaderT r m a -> ReaderT r m a #
(Monad m, Monoid e) => MonadPlus (ExceptT e m)
Instance details Defined in Control.Monad.Trans.Except Methods mzero :: ExceptT e m a # mplus :: ExceptT e m a -> ExceptT e m a -> ExceptT e m a #
(Functor f, Monad m, MonadPlus m) => MonadPlus (FreeT f m)
Instance details Defined in Control.Monad.Free Methods mzero :: FreeT f m a # mplus :: FreeT f m a -> FreeT f m a -> FreeT f m a #
(Monad m, Error e) => MonadPlus (ErrorT e m)
Instance details Defined in Control.Monad.Trans.Error Methods mzero :: ErrorT e m a # mplus :: ErrorT e m a -> ErrorT e m a -> ErrorT e m a #
(MonadPlus f, MonadPlus g) => MonadPlus (f :*: g)	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Methods mzero :: (f :: g) a # mplus :: (f :: g) a -> (f :: g) a -> (f :: g) a #
(MonadPlus f, MonadPlus g) => MonadPlus (Product f g)	Since: base-4.9.0.0
Instance details Defined in Data.Functor.Product Methods mzero :: Product f g a # mplus :: Product f g a -> Product f g a -> Product f g a #
(Ord e, Stream s) => MonadPlus (ParsecT e s m)	`mzero` is a parser that fails without consuming input. Note: strictly speaking, this instance is unlawful. The right identity law does not hold, e.g. in general this is not true: v >> mzero = mero However the following holds: try v >> mzero = mzero
Instance details Defined in Text.Megaparsec.Internal Methods mzero :: ParsecT e s m a # mplus :: ParsecT e s m a -> ParsecT e s m a -> ParsecT e s m a #
MonadPlus f => MonadPlus (M1 i c f)	Since: base-4.9.0.0
Instance details Defined in GHC.Generics Methods mzero :: M1 i c f a # mplus :: M1 i c f a -> M1 i c f a -> M1 i c f a #
(Monoid w, MonadPlus m) => MonadPlus (RWST r w s m)
Instance details Defined in Control.Monad.Trans.RWS.Strict Methods mzero :: RWST r w s m a # mplus :: RWST r w s m a -> RWST r w s m a -> RWST r w s m a #
(Monoid w, MonadPlus m) => MonadPlus (RWST r w s m)
Instance details Defined in Control.Monad.Trans.RWS.Lazy Methods mzero :: RWST r w s m a # mplus :: RWST r w s m a -> RWST r w s m a -> RWST r w s m a #

data Void #

Uninhabited data type

Since: base-4.8.0.0

Instances

Instances details

Eq Void	Since: base-4.8.0.0
Instance details Defined in Data.Void Methods (==) :: Void -> Void -> Bool # (/=) :: Void -> Void -> Bool #
Data Void	Since: base-4.8.0.0
Instance details Defined in Data.Void Methods gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> Void -> c Void # gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c Void # toConstr :: Void -> Constr # dataTypeOf :: Void -> DataType # dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c Void) # dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c Void) # gmapT :: (forall b. Data b => b -> b) -> Void -> Void # gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> Void -> r # gmapQr :: forall r r'. (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> Void -> r # gmapQ :: (forall d. Data d => d -> u) -> Void -> [u] # gmapQi :: Int -> (forall d. Data d => d -> u) -> Void -> u # gmapM :: Monad m => (forall d. Data d => d -> m d) -> Void -> m Void # gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> Void -> m Void # gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> Void -> m Void #
Ord Void	Since: base-4.8.0.0
Instance details Defined in Data.Void Methods compare :: Void -> Void -> Ordering # (<) :: Void -> Void -> Bool # (<=) :: Void -> Void -> Bool # (>) :: Void -> Void -> Bool # (>=) :: Void -> Void -> Bool # max :: Void -> Void -> Void # min :: Void -> Void -> Void #
Read Void	Reading a `Void` value is always a parse error, considering `Void` as a data type with no constructors. Since: base-4.8.0.0
Instance details Defined in Data.Void Methods readsPrec :: Int -> ReadS Void # readList :: ReadS [Void] # readPrec :: ReadPrec Void # readListPrec :: ReadPrec [Void] #
Show Void	Since: base-4.8.0.0
Instance details Defined in Data.Void Methods showsPrec :: Int -> Void -> ShowS # show :: Void -> String # showList :: [Void] -> ShowS #
Ix Void	Since: base-4.8.0.0
Instance details Defined in Data.Void Methods range :: (Void, Void) -> [Void] # index :: (Void, Void) -> Void -> Int # unsafeIndex :: (Void, Void) -> Void -> Int # inRange :: (Void, Void) -> Void -> Bool # rangeSize :: (Void, Void) -> Int # unsafeRangeSize :: (Void, Void) -> Int #
Generic Void	Since: base-4.8.0.0
Instance details Defined in Data.Void Associated Types type Rep Void :: Type -> Type # Methods from :: Void -> Rep Void x # to :: Rep Void x -> Void #
Semigroup Void	Since: base-4.9.0.0
Instance details Defined in Data.Void Methods (<>) :: Void -> Void -> Void # sconcat :: NonEmpty Void -> Void # stimes :: Integral b => b -> Void -> Void #
Hashable Void
Instance details Defined in Data.Hashable.Class Methods hashWithSalt :: Int -> Void -> Int # hash :: Void -> Int #
ToJSON Void
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: Void -> Value # toEncoding :: Void -> Encoding # toJSONList :: [Void] -> Value # toEncodingList :: [Void] -> Encoding #
FromJSON Void
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser Void # parseJSONList :: Value -> Parser [Void] #
Exception Void	Since: base-4.8.0.0
Instance details Defined in Data.Void Methods toException :: Void -> SomeException # fromException :: SomeException -> Maybe Void # displayException :: Void -> String #
ShowErrorComponent Void
Instance details Defined in Text.Megaparsec.Error Methods showErrorComponent :: Void -> String # errorComponentLen :: Void -> Int #
Pretty Void	Finding a good example for printing something that does not exist is hard, so here is an example of printing a list full of nothing. `>>>` `pretty ([] :: [Void])`[]
Instance details Defined in Prettyprinter.Internal Methods pretty :: Void -> Doc ann # prettyList :: [Void] -> Doc ann #
Lift Void	Since: template-haskell-2.15.0.0
Instance details Defined in Language.Haskell.TH.Syntax Methods lift :: Void -> Q Exp # liftTyped :: Void -> Q (TExp Void) #
type Rep Void
Instance details Defined in Data.Void type Rep Void = D1 ('MetaData "Void" "Data.Void" "base" 'False) (V1 :: Type -> Type)

class Monad m => MonadIO (m :: Type -> Type) where #

Monads in which IO computations may be embedded. Any monad built by applying a sequence of monad transformers to the IO monad will be an instance of this class.

Instances should satisfy the following laws, which state that liftIO is a transformer of monads:

```
liftIO . return = return
```

liftIO (m >>= f) = liftIO m >>= (liftIO . f)

Methods

liftIO :: IO a -> m a #

Lift a computation from the IO monad.

Instances

Instances details

MonadIO IO	Since: base-4.9.0.0
Instance details Defined in Control.Monad.IO.Class Methods liftIO :: IO a -> IO a #
MonadIO Q
Instance details Defined in Language.Haskell.TH.Syntax Methods liftIO :: IO a -> Q a #
MonadIO m => MonadIO (MaybeT m)
Instance details Defined in Control.Monad.Trans.Maybe Methods liftIO :: IO a -> MaybeT m a #
MonadIO m => MonadIO (ResourceT m)
Instance details Defined in Control.Monad.Trans.Resource.Internal Methods liftIO :: IO a -> ResourceT m a #
MonadIO m => MonadIO (ListT m)
Instance details Defined in Control.Monad.Trans.List Methods liftIO :: IO a -> ListT m a #
MonadIO m => MonadIO (NoLoggingT m)
Instance details Defined in Control.Monad.Logger Methods liftIO :: IO a -> NoLoggingT m a #
MonadIO m => MonadIO (WriterLoggingT m)
Instance details Defined in Control.Monad.Logger Methods liftIO :: IO a -> WriterLoggingT m a #
MonadIO m => MonadIO (LoggingT m)
Instance details Defined in Control.Monad.Logger Methods liftIO :: IO a -> LoggingT m a #
MonadIO (WidgetFor site)
Instance details Defined in Yesod.Core.Types Methods liftIO :: IO a -> WidgetFor site a #
MonadIO (HandlerFor site)
Instance details Defined in Yesod.Core.Types Methods liftIO :: IO a -> HandlerFor site a #
MonadIO (SIO s)
Instance details Defined in Yesod.Test Methods liftIO :: IO a -> SIO s a #
MonadIO m => MonadIO (IdentityT m)
Instance details Defined in Control.Monad.Trans.Identity Methods liftIO :: IO a -> IdentityT m a #
(Monoid w, MonadIO m) => MonadIO (WriterT w m)
Instance details Defined in Control.Monad.Trans.Writer.Strict Methods liftIO :: IO a -> WriterT w m a #
(Monoid w, MonadIO m) => MonadIO (WriterT w m)
Instance details Defined in Control.Monad.Trans.Writer.Lazy Methods liftIO :: IO a -> WriterT w m a #
MonadIO m => MonadIO (StateT s m)
Instance details Defined in Control.Monad.Trans.State.Strict Methods liftIO :: IO a -> StateT s m a #
MonadIO m => MonadIO (StateT s m)
Instance details Defined in Control.Monad.Trans.State.Lazy Methods liftIO :: IO a -> StateT s m a #
MonadIO m => MonadIO (ReaderT r m)
Instance details Defined in Control.Monad.Trans.Reader Methods liftIO :: IO a -> ReaderT r m a #
MonadIO m => MonadIO (ExceptT e m)
Instance details Defined in Control.Monad.Trans.Except Methods liftIO :: IO a -> ExceptT e m a #
(Functor f, Monad m, MonadIO m) => MonadIO (FreeT f m)
Instance details Defined in Control.Monad.Free Methods liftIO :: IO a -> FreeT f m a #
(Error e, MonadIO m) => MonadIO (ErrorT e m)
Instance details Defined in Control.Monad.Trans.Error Methods liftIO :: IO a -> ErrorT e m a #
MonadIO (SubHandlerFor child master)
Instance details Defined in Yesod.Core.Types Methods liftIO :: IO a -> SubHandlerFor child master a #
MonadIO m => MonadIO (ConduitT i o m)
Instance details Defined in Data.Conduit.Internal.Conduit Methods liftIO :: IO a -> ConduitT i o m a #
(Stream s, MonadIO m) => MonadIO (ParsecT e s m)
Instance details Defined in Text.Megaparsec.Internal Methods liftIO :: IO a -> ParsecT e s m a #
(Monoid w, MonadIO m) => MonadIO (RWST r w s m)
Instance details Defined in Control.Monad.Trans.RWS.Strict Methods liftIO :: IO a -> RWST r w s m a #
(Monoid w, MonadIO m) => MonadIO (RWST r w s m)
Instance details Defined in Control.Monad.Trans.RWS.Lazy Methods liftIO :: IO a -> RWST r w s m a #
MonadIO m => MonadIO (Pipe l i o u m)
Instance details Defined in Data.Conduit.Internal.Pipe Methods liftIO :: IO a -> Pipe l i o u m a #

mfilter :: MonadPlus m => (a -> Bool) -> m a -> m a #

Direct MonadPlus equivalent of filter.

Examples

Expand

The filter function is just mfilter specialized to the list monad:

filter = ( mfilter :: (a -> Bool) -> [a] -> [a] )

An example using mfilter with the Maybe monad:

>>> mfilter odd (Just 1)
Just 1
>>> mfilter odd (Just 2)
Nothing

(<$!>) :: Monad m => (a -> b) -> m a -> m b infixl 4 #

Strict version of <$>.

Since: base-4.8.0.0

unless :: Applicative f => Bool -> f () -> f () #

The reverse of when.

replicateM_ :: Applicative m => Int -> m a -> m () #

Like replicateM, but discards the result.

replicateM :: Applicative m => Int -> m a -> m [a] #

replicateM n act performs the action n times, gathering the results.

Using ApplicativeDo: 'replicateM 5 as' can be understood as the do expression

do a1 <- as
   a2 <- as
   a3 <- as
   a4 <- as
   a5 <- as
   pure [a1,a2,a3,a4,a5]

Note the Applicative constraint.

foldM_ :: (Foldable t, Monad m) => (b -> a -> m b) -> b -> t a -> m () #

Like foldM, but discards the result.

foldM :: (Foldable t, Monad m) => (b -> a -> m b) -> b -> t a -> m b #

The foldM function is analogous to foldl, except that its result is encapsulated in a monad. Note that foldM works from left-to-right over the list arguments. This could be an issue where (>>) and the `folded function' are not commutative.

foldM f a1 [x1, x2, ..., xm]

==

do
  a2 <- f a1 x1
  a3 <- f a2 x2
  ...
  f am xm

If right-to-left evaluation is required, the input list should be reversed.

Note: foldM is the same as foldlM

zipWithM_ :: Applicative m => (a -> b -> m c) -> [a] -> [b] -> m () #

zipWithM_ is the extension of zipWithM which ignores the final result.

zipWithM :: Applicative m => (a -> b -> m c) -> [a] -> [b] -> m [c] #

The zipWithM function generalizes zipWith to arbitrary applicative functors.

mapAndUnzipM :: Applicative m => (a -> m (b, c)) -> [a] -> m ([b], [c]) #

The mapAndUnzipM function maps its first argument over a list, returning the result as a pair of lists. This function is mainly used with complicated data structures or a state monad.

forever :: Applicative f => f a -> f b #

Repeat an action indefinitely.

Using ApplicativeDo: 'forever as' can be understood as the pseudo-do expression

do as
   as
   ..

with as repeating.

Examples

Expand

A common use of forever is to process input from network sockets, Handles, and channels (e.g. MVar and Chan).

For example, here is how we might implement an echo server, using forever both to listen for client connections on a network socket and to echo client input on client connection handles:

echoServer :: Socket -> IO ()
echoServer socket = forever $ do
  client <- accept socket
  forkFinally (echo client) (\_ -> hClose client)
  where
    echo :: Handle -> IO ()
    echo client = forever $
      hGetLine client >>= hPutStrLn client

(<=<) :: Monad m => (b -> m c) -> (a -> m b) -> a -> m c infixr 1 #

Right-to-left composition of Kleisli arrows. (>=>), with the arguments flipped.

Note how this operator resembles function composition (.):

(.)   ::            (b ->   c) -> (a ->   b) -> a ->   c
(<=<) :: Monad m => (b -> m c) -> (a -> m b) -> a -> m c

(>=>) :: Monad m => (a -> m b) -> (b -> m c) -> a -> m c infixr 1 #

Left-to-right composition of Kleisli arrows.

'(bs >=> cs) a' can be understood as the do expression

do b <- bs a
   cs b

filterM :: Applicative m => (a -> m Bool) -> [a] -> m [a] #

This generalizes the list-based filter function.

foldMapDefault :: (Traversable t, Monoid m) => (a -> m) -> t a -> m #

This function may be used as a value for foldMap in a Foldable instance.

foldMapDefault f ≡ getConst . traverse (Const . f)

fmapDefault :: Traversable t => (a -> b) -> t a -> t b #

This function may be used as a value for fmap in a Functor instance, provided that traverse is defined. (Using fmapDefault with a Traversable instance defined only by sequenceA will result in infinite recursion.)

fmapDefault f ≡ runIdentity . traverse (Identity . f)

mapAccumR :: Traversable t => (a -> b -> (a, c)) -> a -> t b -> (a, t c) #

The mapAccumR function behaves like a combination of fmap and foldr; it applies a function to each element of a structure, passing an accumulating parameter from right to left, and returning a final value of this accumulator together with the new structure.

mapAccumL :: Traversable t => (a -> b -> (a, c)) -> a -> t b -> (a, t c) #

The mapAccumL function behaves like a combination of fmap and foldl; it applies a function to each element of a structure, passing an accumulating parameter from left to right, and returning a final value of this accumulator together with the new structure.

forM :: (Traversable t, Monad m) => t a -> (a -> m b) -> m (t b) #

forM is mapM with its arguments flipped. For a version that ignores the results see forM_.

for :: (Traversable t, Applicative f) => t a -> (a -> f b) -> f (t b) #

for is traverse with its arguments flipped. For a version that ignores the results see for_.

readIO :: Read a => String -> IO a #

The readIO function is similar to read except that it signals parse failure to the IO monad instead of terminating the program.

readLn :: Read a => IO a #

The readLn function combines getLine and readIO.

appendFile :: FilePath -> String -> IO () #

The computation appendFile file str function appends the string str, to the file file.

Note that writeFile and appendFile write a literal string to a file. To write a value of any printable type, as with print, use the show function to convert the value to a string first.

main = appendFile "squares" (show [(x,x*x) | x <- [0,0.1..2]])

interact :: (String -> String) -> IO () #

The interact function takes a function of type String->String as its argument. The entire input from the standard input device is passed to this function as its argument, and the resulting string is output on the standard output device.

getContents :: IO String #

The getContents operation returns all user input as a single string, which is read lazily as it is needed (same as hGetContents stdin).

getLine :: IO String #

Read a line from the standard input device (same as hGetLine stdin).

getChar :: IO Char #

Read a character from the standard input device (same as hGetChar stdin).

putStrLn :: String -> IO () #

The same as putStr, but adds a newline character.

putStr :: String -> IO () #

Write a string to the standard output device (same as hPutStr stdout).

putChar :: Char -> IO () #

Write a character to the standard output device (same as hPutChar stdout).

ioError :: IOError -> IO a #

Raise an IOError in the IO monad.

userError :: String -> IOError #

Construct an IOError value with a string describing the error. The fail method of the IO instance of the Monad class raises a userError, thus:

instance Monad IO where
  ...
  fail s = ioError (userError s)

type IOError = IOException #

The Haskell 2010 type for exceptions in the IO monad. Any I/O operation may raise an IOError instead of returning a result. For a more general type of exception, including also those that arise in pure code, see Exception.

In Haskell 2010, this is an opaque type.

find :: Foldable t => (a -> Bool) -> t a -> Maybe a #

The find function takes a predicate and a structure and returns the leftmost element of the structure matching the predicate, or Nothing if there is no such element.

notElem :: (Foldable t, Eq a) => a -> t a -> Bool infix 4 #

notElem is the negation of elem.

minimumBy :: Foldable t => (a -> a -> Ordering) -> t a -> a #

The least element of a non-empty structure with respect to the given comparison function.

maximumBy :: Foldable t => (a -> a -> Ordering) -> t a -> a #

The largest element of a non-empty structure with respect to the given comparison function.

all :: Foldable t => (a -> Bool) -> t a -> Bool #

Determines whether all elements of the structure satisfy the predicate.

any :: Foldable t => (a -> Bool) -> t a -> Bool #

Determines whether any element of the structure satisfies the predicate.

or :: Foldable t => t Bool -> Bool #

or returns the disjunction of a container of Bools. For the result to be False, the container must be finite; True, however, results from a True value finitely far from the left end.

and :: Foldable t => t Bool -> Bool #

and returns the conjunction of a container of Bools. For the result to be True, the container must be finite; False, however, results from a False value finitely far from the left end.

concatMap :: Foldable t => (a -> [b]) -> t a -> [b] #

Map a function over all the elements of a container and concatenate the resulting lists.

concat :: Foldable t => t [a] -> [a] #

The concatenation of all the elements of a container of lists.

msum :: (Foldable t, MonadPlus m) => t (m a) -> m a #

The sum of a collection of actions, generalizing concat. As of base 4.8.0.0, msum is just asum, specialized to MonadPlus.

asum :: (Foldable t, Alternative f) => t (f a) -> f a #

The sum of a collection of actions, generalizing concat.

>>> asum [Just "Hello", Nothing, Just "World"]
Just "Hello"

sequence_ :: (Foldable t, Monad m) => t (m a) -> m () #

Evaluate each monadic action in the structure from left to right, and ignore the results. For a version that doesn't ignore the results see sequence.

As of base 4.8.0.0, sequence_ is just sequenceA_, specialized to Monad.

sequenceA_ :: (Foldable t, Applicative f) => t (f a) -> f () #

Evaluate each action in the structure from left to right, and ignore the results. For a version that doesn't ignore the results see sequenceA.

for_ :: (Foldable t, Applicative f) => t a -> (a -> f b) -> f () #

for_ is traverse_ with its arguments flipped. For a version that doesn't ignore the results see for.

>>> for_ [1..4] print
1
2
3
4

traverse_ :: (Foldable t, Applicative f) => (a -> f b) -> t a -> f () #

Map each element of a structure to an action, evaluate these actions from left to right, and ignore the results. For a version that doesn't ignore the results see traverse.

foldlM :: (Foldable t, Monad m) => (b -> a -> m b) -> b -> t a -> m b #

Monadic fold over the elements of a structure, associating to the left, i.e. from left to right.

foldrM :: (Foldable t, Monad m) => (a -> b -> m b) -> b -> t a -> m b #

Monadic fold over the elements of a structure, associating to the right, i.e. from right to left.

unwords :: [String] -> String #

unwords is an inverse operation to words. It joins words with separating spaces.

>>> unwords ["Lorem", "ipsum", "dolor"]
"Lorem ipsum dolor"

words :: String -> [String] #

words breaks a string up into a list of words, which were delimited by white space.

>>> words "Lorem ipsum\ndolor"
["Lorem","ipsum","dolor"]

unlines :: [String] -> String #

unlines is an inverse operation to lines. It joins lines, after appending a terminating newline to each.

>>> unlines ["Hello", "World", "!"]
"Hello\nWorld\n!\n"

lines :: String -> [String] #

lines breaks a string up into a list of strings at newline characters. The resulting strings do not contain newlines.

Note that after splitting the string at newline characters, the last part of the string is considered a line even if it doesn't end with a newline. For example,

>>> lines ""
[]

>>> lines "\n"
[""]

>>> lines "one"
["one"]

>>> lines "one\n"
["one"]

>>> lines "one\n\n"
["one",""]

>>> lines "one\ntwo"
["one","two"]

>>> lines "one\ntwo\n"
["one","two"]

Thus lines s contains at least as many elements as newlines in s.

unfoldr :: (b -> Maybe (a, b)) -> b -> [a] #

The unfoldr function is a `dual' to foldr: while foldr reduces a list to a summary value, unfoldr builds a list from a seed value. The function takes the element and returns Nothing if it is done producing the list or returns Just (a,b), in which case, a is a prepended to the list and b is used as the next element in a recursive call. For example,

iterate f == unfoldr (\x -> Just (x, f x))

In some cases, unfoldr can undo a foldr operation:

unfoldr f' (foldr f z xs) == xs

if the following holds:

f' (f x y) = Just (x,y)
f' z       = Nothing

A simple use of unfoldr:

>>> unfoldr (\b -> if b == 0 then Nothing else Just (b, b-1)) 10
[10,9,8,7,6,5,4,3,2,1]

reads :: Read a => ReadS a #

equivalent to readsPrec with a precedence of 0.

fromRight :: b -> Either a b -> b #

Return the contents of a Right-value or a default value otherwise.

Examples

Expand

Basic usage:

>>> fromRight 1 (Right 3)
3
>>> fromRight 1 (Left "foo")
1

Since: base-4.10.0.0

fromLeft :: a -> Either a b -> a #

Return the contents of a Left-value or a default value otherwise.

Examples

Expand

Basic usage:

>>> fromLeft 1 (Left 3)
3
>>> fromLeft 1 (Right "foo")
1

Since: base-4.10.0.0

isRight :: Either a b -> Bool #

Return True if the given value is a Right-value, False otherwise.

Examples

Expand

Basic usage:

>>> isRight (Left "foo")
False
>>> isRight (Right 3)
True

Assuming a Left value signifies some sort of error, we can use isRight to write a very simple reporting function that only outputs "SUCCESS" when a computation has succeeded.

This example shows how isRight might be used to avoid pattern matching when one does not care about the value contained in the constructor:

>>> import Control.Monad ( when )
>>> let report e = when (isRight e) $ putStrLn "SUCCESS"
>>> report (Left "parse error")
>>> report (Right 1)
SUCCESS

Since: base-4.7.0.0

isLeft :: Either a b -> Bool #

Return True if the given value is a Left-value, False otherwise.

Examples

Expand

Basic usage:

>>> isLeft (Left "foo")
True
>>> isLeft (Right 3)
False

Assuming a Left value signifies some sort of error, we can use isLeft to write a very simple error-reporting function that does absolutely nothing in the case of success, and outputs "ERROR" if any error occurred.

This example shows how isLeft might be used to avoid pattern matching when one does not care about the value contained in the constructor:

>>> import Control.Monad ( when )
>>> let report e = when (isLeft e) $ putStrLn "ERROR"
>>> report (Right 1)
>>> report (Left "parse error")
ERROR

Since: base-4.7.0.0

partitionEithers :: [Either a b] -> ([a], [b]) #

Partitions a list of Either into two lists. All the Left elements are extracted, in order, to the first component of the output. Similarly the Right elements are extracted to the second component of the output.

Examples

Expand

Basic usage:

>>> let list = [ Left "foo", Right 3, Left "bar", Right 7, Left "baz" ]
>>> partitionEithers list
(["foo","bar","baz"],[3,7])

The pair returned by partitionEithers x should be the same pair as (lefts x, rights x):

>>> let list = [ Left "foo", Right 3, Left "bar", Right 7, Left "baz" ]
>>> partitionEithers list == (lefts list, rights list)
True

rights :: [Either a b] -> [b] #

Extracts from a list of Either all the Right elements. All the Right elements are extracted in order.

Examples

Expand

Basic usage:

>>> let list = [ Left "foo", Right 3, Left "bar", Right 7, Left "baz" ]
>>> rights list
[3,7]

lefts :: [Either a b] -> [a] #

Extracts from a list of Either all the Left elements. All the Left elements are extracted in order.

Examples

Expand

Basic usage:

>>> let list = [ Left "foo", Right 3, Left "bar", Right 7, Left "baz" ]
>>> lefts list
["foo","bar","baz"]

either :: (a -> c) -> (b -> c) -> Either a b -> c #

Case analysis for the Either type. If the value is Left a, apply the first function to a; if it is Right b, apply the second function to b.

Examples

Expand

We create two values of type Either String Int, one using the Left constructor and another using the Right constructor. Then we apply "either" the length function (if we have a String) or the "times-two" function (if we have an Int):

>>> let s = Left "foo" :: Either String Int
>>> let n = Right 3 :: Either String Int
>>> either length (*2) s
3
>>> either length (*2) n
6

lex :: ReadS String #

The lex function reads a single lexeme from the input, discarding initial white space, and returning the characters that constitute the lexeme. If the input string contains only white space, lex returns a single successful `lexeme' consisting of the empty string. (Thus lex "" = [("","")].) If there is no legal lexeme at the beginning of the input string, lex fails (i.e. returns []).

This lexer is not completely faithful to the Haskell lexical syntax in the following respects:

Qualified names are not handled properly
Octal and hexadecimal numerics are not recognized as a single token
Comments are not treated properly

readParen :: Bool -> ReadS a -> ReadS a #

readParen True p parses what p parses, but surrounded with parentheses.

readParen False p parses what p parses, but optionally surrounded with parentheses.

type ReadS a = String -> [(a, String)] #

A parser for a type a, represented as a function that takes a String and returns a list of possible parses as (a,String) pairs.

Note that this kind of backtracking parser is very inefficient; reading a large structure may be quite slow (cf ReadP).

lcm :: Integral a => a -> a -> a #

lcm x y is the smallest positive integer that both x and y divide.

gcd :: Integral a => a -> a -> a #

gcd x y is the non-negative factor of both x and y of which every common factor of x and y is also a factor; for example gcd 4 2 = 2, gcd (-4) 6 = 2, gcd 0 4 = 4. gcd 0 0 = 0. (That is, the common divisor that is "greatest" in the divisibility preordering.)

Note: Since for signed fixed-width integer types, abs minBound < 0, the result may be negative if one of the arguments is minBound (and necessarily is if the other is 0 or minBound) for such types.

(^^) :: (Fractional a, Integral b) => a -> b -> a infixr 8 #

raise a number to an integral power

(^) :: (Num a, Integral b) => a -> b -> a infixr 8 #

raise a number to a non-negative integral power

odd :: Integral a => a -> Bool #

even :: Integral a => a -> Bool #

showParen :: Bool -> ShowS -> ShowS #

utility function that surrounds the inner show function with parentheses when the Bool parameter is True.

showString :: String -> ShowS #

utility function converting a String to a show function that simply prepends the string unchanged.

showChar :: Char -> ShowS #

utility function converting a Char to a show function that simply prepends the character unchanged.

shows :: Show a => a -> ShowS #

equivalent to showsPrec with a precedence of 0.

unzip3 :: [(a, b, c)] -> ([a], [b], [c]) #

The unzip3 function takes a list of triples and returns three lists, analogous to unzip.

unzip :: [(a, b)] -> ([a], [b]) #

unzip transforms a list of pairs into a list of first components and a list of second components.

zipWith3 :: (a -> b -> c -> d) -> [a] -> [b] -> [c] -> [d] #

The zipWith3 function takes a function which combines three elements, as well as three lists and returns a list of their point-wise combination, analogous to zipWith. It is capable of list fusion, but it is restricted to its first list argument and its resulting list.

zipWith :: (a -> b -> c) -> [a] -> [b] -> [c] #

$\mathcal{O}(\min(m,n))$. zipWith generalises zip by zipping with the function given as the first argument, instead of a tupling function. For example, zipWith (+) is applied to two lists to produce the list of corresponding sums:

>>> zipWith (+) [1, 2, 3] [4, 5, 6]
[5,7,9]

zipWith is right-lazy:

zipWith f [] _|_ = []

zipWith is capable of list fusion, but it is restricted to its first list argument and its resulting list.

zip3 :: [a] -> [b] -> [c] -> [(a, b, c)] #

zip3 takes three lists and returns a list of triples, analogous to zip. It is capable of list fusion, but it is restricted to its first list argument and its resulting list.

(!!) :: [a] -> Int -> a infixl 9 #

List index (subscript) operator, starting from 0. It is an instance of the more general genericIndex, which takes an index of any integral type.

lookup :: Eq a => a -> [(a, b)] -> Maybe b #

$\mathcal{O}(n)$. lookup key assocs looks up a key in an association list.

>>> lookup 2 [(1, "first"), (2, "second"), (3, "third")]
Just "second"

reverse :: [a] -> [a] #

reverse xs returns the elements of xs in reverse order. xs must be finite.

break :: (a -> Bool) -> [a] -> ([a], [a]) #

break, applied to a predicate p and a list xs, returns a tuple where first element is longest prefix (possibly empty) of xs of elements that do not satisfy p and second element is the remainder of the list:

break (> 3) [1,2,3,4,1,2,3,4] == ([1,2,3],[4,1,2,3,4])
break (< 9) [1,2,3] == ([],[1,2,3])
break (> 9) [1,2,3] == ([1,2,3],[])

break p is equivalent to span (not . p).

span :: (a -> Bool) -> [a] -> ([a], [a]) #

span, applied to a predicate p and a list xs, returns a tuple where first element is longest prefix (possibly empty) of xs of elements that satisfy p and second element is the remainder of the list:

span (< 3) [1,2,3,4,1,2,3,4] == ([1,2],[3,4,1,2,3,4])
span (< 9) [1,2,3] == ([1,2,3],[])
span (< 0) [1,2,3] == ([],[1,2,3])

span p xs is equivalent to (takeWhile p xs, dropWhile p xs)

splitAt :: Int -> [a] -> ([a], [a]) #

splitAt n xs returns a tuple where first element is xs prefix of length n and second element is the remainder of the list:

splitAt 6 "Hello World!" == ("Hello ","World!")
splitAt 3 [1,2,3,4,5] == ([1,2,3],[4,5])
splitAt 1 [1,2,3] == ([1],[2,3])
splitAt 3 [1,2,3] == ([1,2,3],[])
splitAt 4 [1,2,3] == ([1,2,3],[])
splitAt 0 [1,2,3] == ([],[1,2,3])
splitAt (-1) [1,2,3] == ([],[1,2,3])

It is equivalent to (take n xs, drop n xs) when n is not _|_ (splitAt _|_ xs = _|_). splitAt is an instance of the more general genericSplitAt, in which n may be of any integral type.

drop :: Int -> [a] -> [a] #

drop n xs returns the suffix of xs after the first n elements, or [] if n > length xs:

drop 6 "Hello World!" == "World!"
drop 3 [1,2,3,4,5] == [4,5]
drop 3 [1,2] == []
drop 3 [] == []
drop (-1) [1,2] == [1,2]
drop 0 [1,2] == [1,2]

It is an instance of the more general genericDrop, in which n may be of any integral type.

take :: Int -> [a] -> [a] #

take n, applied to a list xs, returns the prefix of xs of length n, or xs itself if n > length xs:

take 5 "Hello World!" == "Hello"
take 3 [1,2,3,4,5] == [1,2,3]
take 3 [1,2] == [1,2]
take 3 [] == []
take (-1) [1,2] == []
take 0 [1,2] == []

It is an instance of the more general genericTake, in which n may be of any integral type.

dropWhile :: (a -> Bool) -> [a] -> [a] #

dropWhile p xs returns the suffix remaining after takeWhile p xs:

dropWhile (< 3) [1,2,3,4,5,1,2,3] == [3,4,5,1,2,3]
dropWhile (< 9) [1,2,3] == []
dropWhile (< 0) [1,2,3] == [1,2,3]

takeWhile :: (a -> Bool) -> [a] -> [a] #

takeWhile, applied to a predicate p and a list xs, returns the longest prefix (possibly empty) of xs of elements that satisfy p:

takeWhile (< 3) [1,2,3,4,1,2,3,4] == [1,2]
takeWhile (< 9) [1,2,3] == [1,2,3]
takeWhile (< 0) [1,2,3] == []

cycle :: [a] -> [a] #

cycle ties a finite list into a circular one, or equivalently, the infinite repetition of the original list. It is the identity on infinite lists.

replicate :: Int -> a -> [a] #

replicate n x is a list of length n with x the value of every element. It is an instance of the more general genericReplicate, in which n may be of any integral type.

repeat :: a -> [a] #

repeat x is an infinite list, with x the value of every element.

iterate :: (a -> a) -> a -> [a] #

iterate f x returns an infinite list of repeated applications of f to x:

iterate f x == [x, f x, f (f x), ...]

Note that iterate is lazy, potentially leading to thunk build-up if the consumer doesn't force each iterate. See iterate' for a strict variant of this function.

scanr1 :: (a -> a -> a) -> [a] -> [a] #

$\mathcal{O}(n)$. scanr1 is a variant of scanr that has no starting value argument.

scanr :: (a -> b -> b) -> b -> [a] -> [b] #

$\mathcal{O}(n)$. scanr is the right-to-left dual of scanl. Note that

head (scanr f z xs) == foldr f z xs.

scanl1 :: (a -> a -> a) -> [a] -> [a] #

$\mathcal{O}(n)$. scanl1 is a variant of scanl that has no starting value argument:

scanl1 f [x1, x2, ...] == [x1, x1 `f` x2, ...]

scanl :: (b -> a -> b) -> b -> [a] -> [b] #

$\mathcal{O}(n)$. scanl is similar to foldl, but returns a list of successive reduced values from the left:

scanl f z [x1, x2, ...] == [z, z `f` x1, (z `f` x1) `f` x2, ...]

Note that

last (scanl f z xs) == foldl f z xs.

mapMaybe :: (a -> Maybe b) -> [a] -> [b] #

The mapMaybe function is a version of map which can throw out elements. In particular, the functional argument returns something of type Maybe b. If this is Nothing, no element is added on to the result list. If it is Just b, then b is included in the result list.

Examples

Expand

Using mapMaybe f x is a shortcut for catMaybes $ map f x in most cases:

>>> import Text.Read ( readMaybe )
>>> let readMaybeInt = readMaybe :: String -> Maybe Int
>>> mapMaybe readMaybeInt ["1", "Foo", "3"]
[1,3]
>>> catMaybes $ map readMaybeInt ["1", "Foo", "3"]
[1,3]

If we map the Just constructor, the entire list should be returned:

>>> mapMaybe Just [1,2,3]
[1,2,3]

catMaybes :: [Maybe a] -> [a] #

The catMaybes function takes a list of Maybes and returns a list of all the Just values.

Examples

Expand

Basic usage:

>>> catMaybes [Just 1, Nothing, Just 3]
[1,3]

When constructing a list of Maybe values, catMaybes can be used to return all of the "success" results (if the list is the result of a map, then mapMaybe would be more appropriate):

>>> import Text.Read ( readMaybe )
>>> [readMaybe x :: Maybe Int | x <- ["1", "Foo", "3"] ]
[Just 1,Nothing,Just 3]
>>> catMaybes $ [readMaybe x :: Maybe Int | x <- ["1", "Foo", "3"] ]
[1,3]

listToMaybe :: [a] -> Maybe a #

The listToMaybe function returns Nothing on an empty list or Just a where a is the first element of the list.

Examples

Expand

Basic usage:

>>> listToMaybe []
Nothing

>>> listToMaybe [9]
Just 9

>>> listToMaybe [1,2,3]
Just 1

Composing maybeToList with listToMaybe should be the identity on singleton/empty lists:

>>> maybeToList $ listToMaybe [5]
[5]
>>> maybeToList $ listToMaybe []
[]

But not on lists with more than one element:

>>> maybeToList $ listToMaybe [1,2,3]
[1]

maybeToList :: Maybe a -> [a] #

The maybeToList function returns an empty list when given Nothing or a singleton list when given Just.

Examples

Expand

Basic usage:

>>> maybeToList (Just 7)
[7]

>>> maybeToList Nothing
[]

One can use maybeToList to avoid pattern matching when combined with a function that (safely) works on lists:

>>> import Text.Read ( readMaybe )
>>> sum $ maybeToList (readMaybe "3")
3
>>> sum $ maybeToList (readMaybe "")
0

fromMaybe :: a -> Maybe a -> a #

The fromMaybe function takes a default value and and Maybe value. If the Maybe is Nothing, it returns the default values; otherwise, it returns the value contained in the Maybe.

Examples

Expand

Basic usage:

>>> fromMaybe "" (Just "Hello, World!")
"Hello, World!"

>>> fromMaybe "" Nothing
""

Read an integer from a string using readMaybe. If we fail to parse an integer, we want to return 0 by default:

>>> import Text.Read ( readMaybe )
>>> fromMaybe 0 (readMaybe "5")
5
>>> fromMaybe 0 (readMaybe "")
0

fromJust :: HasCallStack => Maybe a -> a #

The fromJust function extracts the element out of a Just and throws an error if its argument is Nothing.

Examples

Expand

Basic usage:

>>> fromJust (Just 1)
1

>>> 2 * (fromJust (Just 10))
20

>>> 2 * (fromJust Nothing)
*** Exception: Maybe.fromJust: Nothing

isNothing :: Maybe a -> Bool #

The isNothing function returns True iff its argument is Nothing.

Examples

Expand

Basic usage:

>>> isNothing (Just 3)
False

>>> isNothing (Just ())
False

>>> isNothing Nothing
True

Only the outer constructor is taken into consideration:

>>> isNothing (Just Nothing)
False

isJust :: Maybe a -> Bool #

The isJust function returns True iff its argument is of the form Just _.

Examples

Expand

Basic usage:

>>> isJust (Just 3)
True

>>> isJust (Just ())
True

>>> isJust Nothing
False

Only the outer constructor is taken into consideration:

>>> isJust (Just Nothing)
True

maybe :: b -> (a -> b) -> Maybe a -> b #

The maybe function takes a default value, a function, and a Maybe value. If the Maybe value is Nothing, the function returns the default value. Otherwise, it applies the function to the value inside the Just and returns the result.

Examples

Expand

Basic usage:

>>> maybe False odd (Just 3)
True

>>> maybe False odd Nothing
False

Read an integer from a string using readMaybe. If we succeed, return twice the integer; that is, apply (*2) to it. If instead we fail to parse an integer, return 0 by default:

>>> import Text.Read ( readMaybe )
>>> maybe 0 (*2) (readMaybe "5")
10
>>> maybe 0 (*2) (readMaybe "")
0

Apply show to a Maybe Int. If we have Just n, we want to show the underlying Int n. But if we have Nothing, we return the empty string instead of (for example) "Nothing":

>>> maybe "" show (Just 5)
"5"
>>> maybe "" show Nothing
""

void :: Functor f => f a -> f () #

void value discards or ignores the result of evaluation, such as the return value of an IO action.

Using ApplicativeDo: 'void as' can be understood as the do expression

do as
   pure ()

with an inferred Functor constraint.

Examples

Expand

Replace the contents of a Maybe Int with unit:

>>> void Nothing
Nothing
>>> void (Just 3)
Just ()

Replace the contents of an Either Int Int with unit, resulting in an Either Int ():

>>> void (Left 8675309)
Left 8675309
>>> void (Right 8675309)
Right ()

Replace every element of a list with unit:

>>> void [1,2,3]
[(),(),()]

Replace the second element of a pair with unit:

>>> void (1,2)
(1,())

Discard the result of an IO action:

>>> mapM print [1,2]
1
2
[(),()]
>>> void $ mapM print [1,2]
1
2

uncurry :: (a -> b -> c) -> (a, b) -> c #

uncurry converts a curried function to a function on pairs.

Examples

Expand

>>> uncurry (+) (1,2)
3

>>> uncurry ($) (show, 1)
"1"

>>> map (uncurry max) [(1,2), (3,4), (6,8)]
[2,4,8]

curry :: ((a, b) -> c) -> a -> b -> c #

curry converts an uncurried function to a curried function.

Examples

Expand

>>> curry fst 1 2
1

subtract :: Num a => a -> a -> a #

the same as flip (-).

Because - is treated specially in the Haskell grammar, (- e) is not a section, but an application of prefix negation. However, (subtract exp) is equivalent to the disallowed section.

asTypeOf :: a -> a -> a #

asTypeOf is a type-restricted version of const. It is usually used as an infix operator, and its typing forces its first argument (which is usually overloaded) to have the same type as the second.

until :: (a -> Bool) -> (a -> a) -> a -> a #

until p f yields the result of applying f until p holds.

($!) :: forall (r :: RuntimeRep) a (b :: TYPE r). (a -> b) -> a -> b infixr 0 #

Strict (call-by-value) application operator. It takes a function and an argument, evaluates the argument to weak head normal form (WHNF), then calls the function with that value.

flip :: (a -> b -> c) -> b -> a -> c #

flip f takes its (first) two arguments in the reverse order of f.

>>> flip (++) "hello" "world"
"worldhello"

ap :: Monad m => m (a -> b) -> m a -> m b #

In many situations, the liftM operations can be replaced by uses of ap, which promotes function application.

return f `ap` x1 `ap` ... `ap` xn

is equivalent to

liftMn f x1 x2 ... xn

liftM5 :: Monad m => (a1 -> a2 -> a3 -> a4 -> a5 -> r) -> m a1 -> m a2 -> m a3 -> m a4 -> m a5 -> m r #

Promote a function to a monad, scanning the monadic arguments from left to right (cf. liftM2).

liftM4 :: Monad m => (a1 -> a2 -> a3 -> a4 -> r) -> m a1 -> m a2 -> m a3 -> m a4 -> m r #

Promote a function to a monad, scanning the monadic arguments from left to right (cf. liftM2).

liftM3 :: Monad m => (a1 -> a2 -> a3 -> r) -> m a1 -> m a2 -> m a3 -> m r #

Promote a function to a monad, scanning the monadic arguments from left to right (cf. liftM2).

liftM2 :: Monad m => (a1 -> a2 -> r) -> m a1 -> m a2 -> m r #

Promote a function to a monad, scanning the monadic arguments from left to right. For example,

liftM2 (+) [0,1] [0,2] = [0,2,1,3]
liftM2 (+) (Just 1) Nothing = Nothing

liftM :: Monad m => (a1 -> r) -> m a1 -> m r #

Promote a function to a monad.

when :: Applicative f => Bool -> f () -> f () #

Conditional execution of Applicative expressions. For example,

when debug (putStrLn "Debugging")

will output the string Debugging if the Boolean value debug is True, and otherwise do nothing.

(=<<) :: Monad m => (a -> m b) -> m a -> m b infixr 1 #

Same as >>=, but with the arguments interchanged.

undefined :: forall (r :: RuntimeRep) (a :: TYPE r). HasCallStack => a #

A special case of error. It is expected that compilers will recognize this and insert error messages which are more appropriate to the context in which undefined appears.

errorWithoutStackTrace :: forall (r :: RuntimeRep) (a :: TYPE r). [Char] -> a #

A variant of error that does not produce a stack trace.

Since: base-4.9.0.0

(&&) :: Bool -> Bool -> Bool infixr 3 #

Boolean "and", lazy in the second argument

(||) :: Bool -> Bool -> Bool infixr 2 #

Boolean "or", lazy in the second argument

not :: Bool -> Bool #

Boolean "not"

type Markup = MarkupM () #

Simplification of the MarkupM datatype.

preEscapedToMarkup :: ToMarkup a => a -> Markup #

Convert a value to Markup without escaping

toHtml :: ToMarkup a => a -> Html #

type Html = Markup #

class MonadIO m => MonadUnliftIO (m :: Type -> Type) where #

Monads which allow their actions to be run in IO.

While MonadIO allows an IO action to be lifted into another monad, this class captures the opposite concept: allowing you to capture the monadic context. Note that, in order to meet the laws given below, the intuition is that a monad must have no monadic state, but may have monadic context. This essentially limits MonadUnliftIO to ReaderT and IdentityT transformers on top of IO.

Laws. For any value u returned by askUnliftIO, it must meet the monad transformer laws as reformulated for MonadUnliftIO:

```
unliftIO u . return = return
```

unliftIO u (m >>= f) = unliftIO u m >>= unliftIO u . f

Instances of MonadUnliftIO must also satisfy the idempotency law:

askUnliftIO >>= \u -> (liftIO . unliftIO u) m = m

This law showcases two properties. First, askUnliftIO doesn't change the monadic context, and second, liftIO . unliftIO u is equivalent to id IF called in the same monadic context as askUnliftIO.

Since: unliftio-core-0.1.0.0

Methods

withRunInIO :: ((forall a. m a -> IO a) -> IO b) -> m b #

Convenience function for capturing the monadic context and running an IO action with a runner function. The runner function is used to run a monadic action m in IO.

Since: unliftio-core-0.1.0.0

Instances

Instances details

MonadUnliftIO IO
Instance details Defined in Control.Monad.IO.Unlift Methods withRunInIO :: ((forall a. IO a -> IO a) -> IO b) -> IO b #
MonadUnliftIO m => MonadUnliftIO (ResourceT m)	Since: resourcet-1.1.10
Instance details Defined in Control.Monad.Trans.Resource.Internal Methods withRunInIO :: ((forall a. ResourceT m a -> IO a) -> IO b) -> ResourceT m b #
MonadUnliftIO m => MonadUnliftIO (NoLoggingT m)	Since: monad-logger-0.3.26
Instance details Defined in Control.Monad.Logger Methods withRunInIO :: ((forall a. NoLoggingT m a -> IO a) -> IO b) -> NoLoggingT m b #
MonadUnliftIO m => MonadUnliftIO (LoggingT m)	Since: monad-logger-0.3.26
Instance details Defined in Control.Monad.Logger Methods withRunInIO :: ((forall a. LoggingT m a -> IO a) -> IO b) -> LoggingT m b #
MonadUnliftIO (WidgetFor site)	Since: yesod-core-1.4.38
Instance details Defined in Yesod.Core.Types Methods withRunInIO :: ((forall a. WidgetFor site a -> IO a) -> IO b) -> WidgetFor site b #
MonadUnliftIO (HandlerFor site)	Since: yesod-core-1.4.38
Instance details Defined in Yesod.Core.Types Methods withRunInIO :: ((forall a. HandlerFor site a -> IO a) -> IO b) -> HandlerFor site b #
MonadUnliftIO (SIO s)
Instance details Defined in Yesod.Test Methods withRunInIO :: ((forall a. SIO s a -> IO a) -> IO b) -> SIO s b #
MonadUnliftIO m => MonadUnliftIO (IdentityT m)
Instance details Defined in Control.Monad.IO.Unlift Methods withRunInIO :: ((forall a. IdentityT m a -> IO a) -> IO b) -> IdentityT m b #
MonadUnliftIO m => MonadUnliftIO (ReaderT r m)
Instance details Defined in Control.Monad.IO.Unlift Methods withRunInIO :: ((forall a. ReaderT r m a -> IO a) -> IO b) -> ReaderT r m b #
MonadUnliftIO (SubHandlerFor child master)	Since: yesod-core-1.4.38
Instance details Defined in Yesod.Core.Types Methods withRunInIO :: ((forall a. SubHandlerFor child master a -> IO a) -> IO b) -> SubHandlerFor child master b #

class MonadIO m => MonadResource (m :: Type -> Type) where #

A Monad which allows for safe resource allocation. In theory, any monad transformer stack which includes a ResourceT can be an instance of MonadResource.

Note: runResourceT has a requirement for a MonadUnliftIO m monad, which allows control operations to be lifted. A MonadResource does not have this requirement. This means that transformers such as ContT can be an instance of MonadResource. However, the ContT wrapper will need to be unwrapped before calling runResourceT.

Since 0.3.0

Methods

liftResourceT :: ResourceT IO a -> m a #

Lift a ResourceT IO action into the current Monad.

Since 0.4.0

Instances

Instances details

MonadResource m => MonadResource (MaybeT m)
Instance details Defined in Control.Monad.Trans.Resource.Internal Methods liftResourceT :: ResourceT IO a -> MaybeT m a #
MonadIO m => MonadResource (ResourceT m)
Instance details Defined in Control.Monad.Trans.Resource.Internal Methods liftResourceT :: ResourceT IO a -> ResourceT m a #
MonadResource m => MonadResource (ListT m)
Instance details Defined in Control.Monad.Trans.Resource.Internal Methods liftResourceT :: ResourceT IO a -> ListT m a #
MonadResource m => MonadResource (NoLoggingT m)
Instance details Defined in Control.Monad.Logger Methods liftResourceT :: ResourceT IO a -> NoLoggingT m a #
MonadResource m => MonadResource (LoggingT m)
Instance details Defined in Control.Monad.Logger Methods liftResourceT :: ResourceT IO a -> LoggingT m a #
MonadResource (WidgetFor site)
Instance details Defined in Yesod.Core.Types Methods liftResourceT :: ResourceT IO a -> WidgetFor site a #
MonadResource (HandlerFor site)
Instance details Defined in Yesod.Core.Types Methods liftResourceT :: ResourceT IO a -> HandlerFor site a #
MonadResource m => MonadResource (IdentityT m)
Instance details Defined in Control.Monad.Trans.Resource.Internal Methods liftResourceT :: ResourceT IO a -> IdentityT m a #
(Monoid w, MonadResource m) => MonadResource (WriterT w m)
Instance details Defined in Control.Monad.Trans.Resource.Internal Methods liftResourceT :: ResourceT IO a -> WriterT w m a #
(Monoid w, MonadResource m) => MonadResource (WriterT w m)
Instance details Defined in Control.Monad.Trans.Resource.Internal Methods liftResourceT :: ResourceT IO a -> WriterT w m a #
MonadResource m => MonadResource (StateT s m)
Instance details Defined in Control.Monad.Trans.Resource.Internal Methods liftResourceT :: ResourceT IO a -> StateT s m a #
MonadResource m => MonadResource (StateT s m)
Instance details Defined in Control.Monad.Trans.Resource.Internal Methods liftResourceT :: ResourceT IO a -> StateT s m a #
MonadResource m => MonadResource (ReaderT r m)
Instance details Defined in Control.Monad.Trans.Resource.Internal Methods liftResourceT :: ResourceT IO a -> ReaderT r m a #
MonadResource m => MonadResource (ExceptT e m)
Instance details Defined in Control.Monad.Trans.Resource.Internal Methods liftResourceT :: ResourceT IO a -> ExceptT e m a #
MonadResource (SubHandlerFor child master)
Instance details Defined in Yesod.Core.Types Methods liftResourceT :: ResourceT IO a -> SubHandlerFor child master a #
MonadResource m => MonadResource (ConduitT i o m)
Instance details Defined in Data.Conduit.Internal.Conduit Methods liftResourceT :: ResourceT IO a -> ConduitT i o m a #
MonadResource m => MonadResource (ContT r m)
Instance details Defined in Control.Monad.Trans.Resource.Internal Methods liftResourceT :: ResourceT IO a -> ContT r m a #
(Monoid w, MonadResource m) => MonadResource (RWST r w s m)
Instance details Defined in Control.Monad.Trans.Resource.Internal Methods liftResourceT :: ResourceT IO a -> RWST r w s m a #
(Monoid w, MonadResource m) => MonadResource (RWST r w s m)
Instance details Defined in Control.Monad.Trans.Resource.Internal Methods liftResourceT :: ResourceT IO a -> RWST r w s m a #
MonadResource m => MonadResource (Pipe l i o u m)
Instance details Defined in Data.Conduit.Internal.Pipe Methods liftResourceT :: ResourceT IO a -> Pipe l i o u m a #

class MonadTrans (t :: (Type -> Type) -> Type -> Type) where #

The class of monad transformers. Instances should satisfy the following laws, which state that lift is a monad transformation:

```
lift . return = return
```
```
lift (m >>= f) = lift m >>= (lift . f)
```

Methods

lift :: Monad m => m a -> t m a #

Lift a computation from the argument monad to the constructed monad.

Instances

Instances details

MonadTrans MaybeT
Instance details Defined in Control.Monad.Trans.Maybe Methods lift :: Monad m => m a -> MaybeT m a #
MonadTrans ResourceT
Instance details Defined in Control.Monad.Trans.Resource.Internal Methods lift :: Monad m => m a -> ResourceT m a #
MonadTrans ListT
Instance details Defined in Control.Monad.Trans.List Methods lift :: Monad m => m a -> ListT m a #
MonadTrans NoLoggingT
Instance details Defined in Control.Monad.Logger Methods lift :: Monad m => m a -> NoLoggingT m a #
MonadTrans WriterLoggingT
Instance details Defined in Control.Monad.Logger Methods lift :: Monad m => m a -> WriterLoggingT m a #
MonadTrans LoggingT
Instance details Defined in Control.Monad.Logger Methods lift :: Monad m => m a -> LoggingT m a #
MonadTrans AForm
Instance details Defined in Yesod.Form.Types Methods lift :: Monad m => m a -> AForm m a #
MonadTrans (IdentityT :: (Type -> Type) -> Type -> Type)
Instance details Defined in Control.Monad.Trans.Identity Methods lift :: Monad m => m a -> IdentityT m a #
Monoid w => MonadTrans (WriterT w)
Instance details Defined in Control.Monad.Trans.Writer.Strict Methods lift :: Monad m => m a -> WriterT w m a #
Monoid w => MonadTrans (WriterT w)
Instance details Defined in Control.Monad.Trans.Writer.Lazy Methods lift :: Monad m => m a -> WriterT w m a #
MonadTrans (StateT s)
Instance details Defined in Control.Monad.Trans.State.Strict Methods lift :: Monad m => m a -> StateT s m a #
MonadTrans (StateT s)
Instance details Defined in Control.Monad.Trans.State.Lazy Methods lift :: Monad m => m a -> StateT s m a #
MonadTrans (ReaderT r)
Instance details Defined in Control.Monad.Trans.Reader Methods lift :: Monad m => m a -> ReaderT r m a #
MonadTrans (ExceptT e)
Instance details Defined in Control.Monad.Trans.Except Methods lift :: Monad m => m a -> ExceptT e m a #
Functor f => MonadTrans (FreeT f)
Instance details Defined in Control.Monad.Free Methods lift :: Monad m => m a -> FreeT f m a #
MonadTrans (ErrorT e)
Instance details Defined in Control.Monad.Trans.Error Methods lift :: Monad m => m a -> ErrorT e m a #
MonadTrans (ConduitT i o)
Instance details Defined in Data.Conduit.Internal.Conduit Methods lift :: Monad m => m a -> ConduitT i o m a #
MonadTrans (ParsecT e s)
Instance details Defined in Text.Megaparsec.Internal Methods lift :: Monad m => m a -> ParsecT e s m a #
Monoid w => MonadTrans (RWST r w s)
Instance details Defined in Control.Monad.Trans.RWS.Strict Methods lift :: Monad m => m a -> RWST r w s m a #
Monoid w => MonadTrans (RWST r w s)
Instance details Defined in Control.Monad.Trans.RWS.Lazy Methods lift :: Monad m => m a -> RWST r w s m a #
MonadTrans (Pipe l i o u)
Instance details Defined in Data.Conduit.Internal.Pipe Methods lift :: Monad m => m a -> Pipe l i o u m a #

class Default a where #

A class for types with a default value.

Minimal complete definition

Nothing

Methods

def :: a #

The default value for this type.

Instances

Instances details

Default Double
Instance details Defined in Data.Default.Class Methods def :: Double #
Default Float
Instance details Defined in Data.Default.Class Methods def :: Float #
Default Int
Instance details Defined in Data.Default.Class Methods def :: Int #
Default Int8
Instance details Defined in Data.Default.Class Methods def :: Int8 #
Default Int16
Instance details Defined in Data.Default.Class Methods def :: Int16 #
Default Int32
Instance details Defined in Data.Default.Class Methods def :: Int32 #
Default Int64
Instance details Defined in Data.Default.Class Methods def :: Int64 #
Default Integer
Instance details Defined in Data.Default.Class Methods def :: Integer #
Default Ordering
Instance details Defined in Data.Default.Class Methods def :: Ordering #
Default Word
Instance details Defined in Data.Default.Class Methods def :: Word #
Default Word8
Instance details Defined in Data.Default.Class Methods def :: Word8 #
Default Word16
Instance details Defined in Data.Default.Class Methods def :: Word16 #
Default Word32
Instance details Defined in Data.Default.Class Methods def :: Word32 #
Default Word64
Instance details Defined in Data.Default.Class Methods def :: Word64 #
Default ()
Instance details Defined in Data.Default.Class Methods def :: () #
Default All
Instance details Defined in Data.Default.Class Methods def :: All #
Default Any
Instance details Defined in Data.Default.Class Methods def :: Any #
Default CShort
Instance details Defined in Data.Default.Class Methods def :: CShort #
Default CUShort
Instance details Defined in Data.Default.Class Methods def :: CUShort #
Default CInt
Instance details Defined in Data.Default.Class Methods def :: CInt #
Default CUInt
Instance details Defined in Data.Default.Class Methods def :: CUInt #
Default CLong
Instance details Defined in Data.Default.Class Methods def :: CLong #
Default CULong
Instance details Defined in Data.Default.Class Methods def :: CULong #
Default CLLong
Instance details Defined in Data.Default.Class Methods def :: CLLong #
Default CULLong
Instance details Defined in Data.Default.Class Methods def :: CULLong #
Default CFloat
Instance details Defined in Data.Default.Class Methods def :: CFloat #
Default CDouble
Instance details Defined in Data.Default.Class Methods def :: CDouble #
Default CPtrdiff
Instance details Defined in Data.Default.Class Methods def :: CPtrdiff #
Default CSize
Instance details Defined in Data.Default.Class Methods def :: CSize #
Default CSigAtomic
Instance details Defined in Data.Default.Class Methods def :: CSigAtomic #
Default CClock
Instance details Defined in Data.Default.Class Methods def :: CClock #
Default CTime
Instance details Defined in Data.Default.Class Methods def :: CTime #
Default CUSeconds
Instance details Defined in Data.Default.Class Methods def :: CUSeconds #
Default CSUSeconds
Instance details Defined in Data.Default.Class Methods def :: CSUSeconds #
Default CIntPtr
Instance details Defined in Data.Default.Class Methods def :: CIntPtr #
Default CUIntPtr
Instance details Defined in Data.Default.Class Methods def :: CUIntPtr #
Default CIntMax
Instance details Defined in Data.Default.Class Methods def :: CIntMax #
Default CUIntMax
Instance details Defined in Data.Default.Class Methods def :: CUIntMax #
Default SetCookie	`def` = `defaultSetCookie`
Instance details Defined in Web.Cookie Methods def :: SetCookie #
Default Interval
Instance details Defined in Hledger.Data.Types Methods def :: Interval #
Default Period
Instance details Defined in Hledger.Data.Types Methods def :: Period #
Default DateSpan
Instance details Defined in Hledger.Data.Types Methods def :: DateSpan #
Default RawOpts
Instance details Defined in Hledger.Data.RawOptions Methods def :: RawOpts #
Default StringFormat
Instance details Defined in Hledger.Data.StringFormat Methods def :: StringFormat #
Default AmountDisplayOpts	Display Amount and MixedAmount with no colour.
Instance details Defined in Hledger.Data.Amount Methods def :: AmountDisplayOpts #
Default Query
Instance details Defined in Hledger.Query Methods def :: Query #
Default ReportSpec
Instance details Defined in Hledger.Reports.ReportOptions Methods def :: ReportSpec #
Default ReportOpts
Instance details Defined in Hledger.Reports.ReportOptions Methods def :: ReportOpts #
Default AccountListMode
Instance details Defined in Hledger.Reports.ReportOptions Methods def :: AccountListMode #
Default BalanceAccumulation
Instance details Defined in Hledger.Reports.ReportOptions Methods def :: BalanceAccumulation #
Default BalanceCalculation
Instance details Defined in Hledger.Reports.ReportOptions Methods def :: BalanceCalculation #
Default CliOpts
Instance details Defined in Hledger.Cli.CliOptions Methods def :: CliOpts #
Default RiddersParam
Instance details Defined in Numeric.RootFinding Methods def :: RiddersParam #
Default NewtonParam
Instance details Defined in Numeric.RootFinding Methods def :: NewtonParam #
Default DetailedSettings
Instance details Defined in Network.Wai.Middleware.RequestLogger Methods def :: DetailedSettings #
Default RequestLoggerSettings
Instance details Defined in Network.Wai.Middleware.RequestLogger Methods def :: RequestLoggerSettings #
Default WidgetFileSettings
Instance details Defined in Yesod.Default.Util Methods def :: WidgetFileSettings #
Default CombineSettings
Instance details Defined in Yesod.Static Methods def :: CombineSettings #
Default WebOpts Source #
Instance details Defined in Hledger.Web.WebOptions Methods def :: WebOpts #
Default [a]
Instance details Defined in Data.Default.Class Methods def :: [a] #
Default (Maybe a)
Instance details Defined in Data.Default.Class Methods def :: Maybe a #
Integral a => Default (Ratio a)
Instance details Defined in Data.Default.Class Methods def :: Ratio a #
Default a => Default (IO a)
Instance details Defined in Data.Default.Class Methods def :: IO a #
(Default a, RealFloat a) => Default (Complex a)
Instance details Defined in Data.Default.Class Methods def :: Complex a #
Default (First a)
Instance details Defined in Data.Default.Class Methods def :: First a #
Default (Last a)
Instance details Defined in Data.Default.Class Methods def :: Last a #
Default a => Default (Dual a)
Instance details Defined in Data.Default.Class Methods def :: Dual a #
Default (Endo a)
Instance details Defined in Data.Default.Class Methods def :: Endo a #
Num a => Default (Sum a)
Instance details Defined in Data.Default.Class Methods def :: Sum a #
Num a => Default (Product a)
Instance details Defined in Data.Default.Class Methods def :: Product a #
Default r => Default (e -> r)
Instance details Defined in Data.Default.Class Methods def :: e -> r #
(Default a, Default b) => Default (a, b)
Instance details Defined in Data.Default.Class Methods def :: (a, b) #
(Default a, Default b, Default c) => Default (a, b, c)
Instance details Defined in Data.Default.Class Methods def :: (a, b, c) #
(Default a, Default b, Default c, Default d) => Default (a, b, c, d)
Instance details Defined in Data.Default.Class Methods def :: (a, b, c, d) #
(Default a, Default b, Default c, Default d, Default e) => Default (a, b, c, d, e)
Instance details Defined in Data.Default.Class Methods def :: (a, b, c, d, e) #
(Default a, Default b, Default c, Default d, Default e, Default f) => Default (a, b, c, d, e, f)
Instance details Defined in Data.Default.Class Methods def :: (a, b, c, d, e, f) #
(Default a, Default b, Default c, Default d, Default e, Default f, Default g) => Default (a, b, c, d, e, f, g)
Instance details Defined in Data.Default.Class Methods def :: (a, b, c, d, e, f, g) #

logOtherS :: Q Exp #

Generates a function that takes a LogSource, a level name and a Text and logs a LevelOther message. Usage:

$logOtherS "SomeSource" "My new level" "This is a log message"

logErrorS :: Q Exp #

See logDebugS

logWarnS :: Q Exp #

See logDebugS

logInfoS :: Q Exp #

See logDebugS

logDebugS :: Q Exp #

Generates a function that takes a LogSource and Text and logs a LevelDebug message. Usage:

$logDebugS "SomeSource" "This is a debug log message"

logOther :: Text -> Q Exp #

Generates a function that takes a Text and logs a LevelOther message. Usage:

$(logOther "My new level") "This is a log message"

logError :: Q Exp #

See logDebug

logWarn :: Q Exp #

See logDebug

logInfo :: Q Exp #

See logDebug

logDebug :: Q Exp #

Generates a function that takes a Text and logs a LevelDebug message. Usage:

$(logDebug) "This is a debug log message"

data LogLevel #

Constructors

LevelDebug
LevelInfo
LevelWarn
LevelError
LevelOther Text

Instances

Instances details

Eq LogLevel
Instance details Defined in Control.Monad.Logger Methods (==) :: LogLevel -> LogLevel -> Bool # (/=) :: LogLevel -> LogLevel -> Bool #
Ord LogLevel
Instance details Defined in Control.Monad.Logger Methods compare :: LogLevel -> LogLevel -> Ordering # (<) :: LogLevel -> LogLevel -> Bool # (<=) :: LogLevel -> LogLevel -> Bool # (>) :: LogLevel -> LogLevel -> Bool # (>=) :: LogLevel -> LogLevel -> Bool # max :: LogLevel -> LogLevel -> LogLevel # min :: LogLevel -> LogLevel -> LogLevel #
Read LogLevel
Instance details Defined in Control.Monad.Logger Methods readsPrec :: Int -> ReadS LogLevel # readList :: ReadS [LogLevel] # readPrec :: ReadPrec LogLevel # readListPrec :: ReadPrec [LogLevel] #
Show LogLevel
Instance details Defined in Control.Monad.Logger Methods showsPrec :: Int -> LogLevel -> ShowS # show :: LogLevel -> String # showList :: [LogLevel] -> ShowS #
Lift LogLevel
Instance details Defined in Control.Monad.Logger Methods lift :: LogLevel -> Q Exp # liftTyped :: LogLevel -> Q (TExp LogLevel) #

class Monad m => MonadLogger (m :: Type -> Type) #

A Monad which has the ability to log messages in some manner.

Instances

Instances details

MonadLogger m => MonadLogger (MaybeT m)
Instance details Defined in Control.Monad.Logger Methods monadLoggerLog :: ToLogStr msg => Loc -> LogSource -> LogLevel -> msg -> MaybeT m () #
MonadLogger m => MonadLogger (ResourceT m)
Instance details Defined in Control.Monad.Logger Methods monadLoggerLog :: ToLogStr msg => Loc -> LogSource -> LogLevel -> msg -> ResourceT m () #
MonadLogger m => MonadLogger (ListT m)
Instance details Defined in Control.Monad.Logger Methods monadLoggerLog :: ToLogStr msg => Loc -> LogSource -> LogLevel -> msg -> ListT m () #
Monad m => MonadLogger (NoLoggingT m)
Instance details Defined in Control.Monad.Logger Methods monadLoggerLog :: ToLogStr msg => Loc -> LogSource -> LogLevel -> msg -> NoLoggingT m () #
Monad m => MonadLogger (WriterLoggingT m)
Instance details Defined in Control.Monad.Logger Methods monadLoggerLog :: ToLogStr msg => Loc -> LogSource -> LogLevel -> msg -> WriterLoggingT m () #
MonadIO m => MonadLogger (LoggingT m)
Instance details Defined in Control.Monad.Logger Methods monadLoggerLog :: ToLogStr msg => Loc -> LogSource -> LogLevel -> msg -> LoggingT m () #
MonadLogger (WidgetFor site)
Instance details Defined in Yesod.Core.Types Methods monadLoggerLog :: ToLogStr msg => Loc -> LogSource -> LogLevel -> msg -> WidgetFor site () #
MonadLogger (HandlerFor site)
Instance details Defined in Yesod.Core.Types Methods monadLoggerLog :: ToLogStr msg => Loc -> LogSource -> LogLevel -> msg -> HandlerFor site () #
MonadLogger m => MonadLogger (IdentityT m)
Instance details Defined in Control.Monad.Logger Methods monadLoggerLog :: ToLogStr msg => Loc -> LogSource -> LogLevel -> msg -> IdentityT m () #
(MonadLogger m, Monoid w) => MonadLogger (WriterT w m)
Instance details Defined in Control.Monad.Logger Methods monadLoggerLog :: ToLogStr msg => Loc -> LogSource -> LogLevel -> msg -> WriterT w m () #
(MonadLogger m, Monoid w) => MonadLogger (WriterT w m)
Instance details Defined in Control.Monad.Logger Methods monadLoggerLog :: ToLogStr msg => Loc -> LogSource -> LogLevel -> msg -> WriterT w m () #
MonadLogger m => MonadLogger (StateT s m)
Instance details Defined in Control.Monad.Logger Methods monadLoggerLog :: ToLogStr msg => Loc -> LogSource -> LogLevel -> msg -> StateT s m () #
MonadLogger m => MonadLogger (StateT s m)
Instance details Defined in Control.Monad.Logger Methods monadLoggerLog :: ToLogStr msg => Loc -> LogSource -> LogLevel -> msg -> StateT s m () #
MonadLogger m => MonadLogger (ReaderT r m)
Instance details Defined in Control.Monad.Logger Methods monadLoggerLog :: ToLogStr msg => Loc -> LogSource -> LogLevel -> msg -> ReaderT r m () #
MonadLogger m => MonadLogger (ExceptT e m)
Instance details Defined in Control.Monad.Logger Methods monadLoggerLog :: ToLogStr msg => Loc -> LogSource -> LogLevel -> msg -> ExceptT e m () #
(MonadLogger m, Error e) => MonadLogger (ErrorT e m)
Instance details Defined in Control.Monad.Logger Methods monadLoggerLog :: ToLogStr msg => Loc -> LogSource -> LogLevel -> msg -> ErrorT e m () #
MonadLogger (SubHandlerFor child master)
Instance details Defined in Yesod.Core.Types Methods monadLoggerLog :: ToLogStr msg => Loc -> LogSource -> LogLevel -> msg -> SubHandlerFor child master () #
MonadLogger m => MonadLogger (ConduitM i o m)
Instance details Defined in Control.Monad.Logger Methods monadLoggerLog :: ToLogStr msg => Loc -> LogSource -> LogLevel -> msg -> ConduitM i o m () #
MonadLogger m => MonadLogger (ContT r m)
Instance details Defined in Control.Monad.Logger Methods monadLoggerLog :: ToLogStr msg => Loc -> LogSource -> LogLevel -> msg -> ContT r m () #
(MonadLogger m, Monoid w) => MonadLogger (RWST r w s m)
Instance details Defined in Control.Monad.Logger Methods monadLoggerLog :: ToLogStr msg => Loc -> LogSource -> LogLevel -> msg -> RWST r w s m () #
(MonadLogger m, Monoid w) => MonadLogger (RWST r w s m)
Instance details Defined in Control.Monad.Logger Methods monadLoggerLog :: ToLogStr msg => Loc -> LogSource -> LogLevel -> msg -> RWST r w s m () #
MonadLogger m => MonadLogger (Pipe l i o u m)
Instance details Defined in Control.Monad.Logger Methods monadLoggerLog :: ToLogStr msg => Loc -> LogSource -> LogLevel -> msg -> Pipe l i o u m () #

class PathPiece s where #

Methods

fromPathPiece :: Text -> Maybe s #

toPathPiece :: s -> Text #

Instances

Instances details

PathPiece Bool
Instance details Defined in Web.PathPieces Methods fromPathPiece :: Text -> Maybe Bool # toPathPiece :: Bool -> Text #
PathPiece Int
Instance details Defined in Web.PathPieces Methods fromPathPiece :: Text -> Maybe Int # toPathPiece :: Int -> Text #
PathPiece Int8
Instance details Defined in Web.PathPieces Methods fromPathPiece :: Text -> Maybe Int8 # toPathPiece :: Int8 -> Text #
PathPiece Int16
Instance details Defined in Web.PathPieces Methods fromPathPiece :: Text -> Maybe Int16 # toPathPiece :: Int16 -> Text #
PathPiece Int32
Instance details Defined in Web.PathPieces Methods fromPathPiece :: Text -> Maybe Int32 # toPathPiece :: Int32 -> Text #
PathPiece Int64
Instance details Defined in Web.PathPieces Methods fromPathPiece :: Text -> Maybe Int64 # toPathPiece :: Int64 -> Text #
PathPiece Integer
Instance details Defined in Web.PathPieces Methods fromPathPiece :: Text -> Maybe Integer # toPathPiece :: Integer -> Text #
PathPiece Word
Instance details Defined in Web.PathPieces Methods fromPathPiece :: Text -> Maybe Word # toPathPiece :: Word -> Text #
PathPiece Word8
Instance details Defined in Web.PathPieces Methods fromPathPiece :: Text -> Maybe Word8 # toPathPiece :: Word8 -> Text #
PathPiece Word16
Instance details Defined in Web.PathPieces Methods fromPathPiece :: Text -> Maybe Word16 # toPathPiece :: Word16 -> Text #
PathPiece Word32
Instance details Defined in Web.PathPieces Methods fromPathPiece :: Text -> Maybe Word32 # toPathPiece :: Word32 -> Text #
PathPiece Word64
Instance details Defined in Web.PathPieces Methods fromPathPiece :: Text -> Maybe Word64 # toPathPiece :: Word64 -> Text #
PathPiece ()
Instance details Defined in Web.PathPieces Methods fromPathPiece :: Text -> Maybe () # toPathPiece :: () -> Text #
PathPiece String
Instance details Defined in Web.PathPieces Methods fromPathPiece :: Text -> Maybe String # toPathPiece :: String -> Text #
PathPiece Text
Instance details Defined in Web.PathPieces Methods fromPathPiece :: Text -> Maybe Text # toPathPiece :: Text -> Text #
PathPiece Text
Instance details Defined in Web.PathPieces Methods fromPathPiece :: Text0 -> Maybe Text # toPathPiece :: Text -> Text0 #
PathPiece Checkmark
Instance details Defined in Database.Persist.Types.Base Methods fromPathPiece :: Text -> Maybe Checkmark # toPathPiece :: Checkmark -> Text #
PathPiece PersistValue
Instance details Defined in Database.Persist.PersistValue Methods fromPathPiece :: Text -> Maybe PersistValue # toPathPiece :: PersistValue -> Text #
PathPiece Day
Instance details Defined in Web.PathPieces Methods fromPathPiece :: Text -> Maybe Day # toPathPiece :: Day -> Text #
PathPiece a => PathPiece (Maybe a)
Instance details Defined in Web.PathPieces Methods fromPathPiece :: Text -> Maybe (Maybe a) # toPathPiece :: Maybe a -> Text #

class PathMultiPiece s where #

Methods

fromPathMultiPiece :: [Text] -> Maybe s #

toPathMultiPiece :: s -> [Text] #

Instances

Instances details

PathPiece a => PathMultiPiece [a]
Instance details Defined in Web.PathPieces Methods fromPathMultiPiece :: [Text] -> Maybe [a] # toPathMultiPiece :: [a] -> [Text] #

discoverEntities :: Q Exp #

mkMigrate :: String -> [UnboundEntityDef] -> Q [Dec] #

Creates a single function to perform all migrations for the entities defined here. One thing to be aware of is dependencies: if you have entities with foreign references, make sure to place those definitions after the entities they reference.

In persistent-2.13.0.0, this was changed to *ignore* the input entity def list, and instead defer to mkEntityDefList to get the correct entities. This avoids problems where the QuasiQuoter is unable to know what the right reference types are. This sets mkPersist to be the "single source of truth" for entity definitions.

migrateModels :: [EntityDef] -> Migration #

The basic function for migrating models, no Template Haskell required.

It's probably best to use this in concert with mkEntityDefList, and then call migrateModels with the result from that function.

share [mkPersist sqlSettings, mkEntityDefList "entities"] [persistLowerCase| ... |]

migrateAll = migrateModels entities

The function mkMigrate currently implements exactly this behavior now. If you're splitting up the entity definitions into separate files, then it is better to use the entity definition list and the concatenate all the models together into a big list to call with migrateModels.

module Foo where

    share [mkPersist s, mkEntityDefList "fooModels"] ...


module Bar where

    share [mkPersist s, mkEntityDefList "barModels"] ...

module Migration where

    import Foo
    import Bar

    migrateAll = migrateModels (fooModels <> barModels)

Since: persistent-2.13.0.0

derivePersistFieldJSON :: String -> Q [Dec] #

Automatically creates a valid PersistField instance for any datatype that has valid ToJSON and FromJSON instances. For a datatype T it generates instances similar to these:

   instance PersistField T where
       toPersistValue = PersistByteString . L.toStrict . encode
       fromPersistValue = (left T.pack) . eitherDecodeStrict' <=< fromPersistValue
   instance PersistFieldSql T where
       sqlType _ = SqlString

derivePersistField :: String -> Q [Dec] #

Automatically creates a valid PersistField instance for any datatype that has valid Show and Read instances. Can be very convenient for Enum types.

mkEntityDefList #

Arguments

:: String	The name that will be given to the `EntityDef` list.
-> [UnboundEntityDef]
-> Q [Dec]

Creates a declaration for the [EntityDef] from the persistent schema. This is necessary because the Persistent QuasiQuoter is unable to know the correct type of ID fields, and assumes that they are all Int64.

Provide this in the list you give to share, much like mkMigrate.

share [mkMigrate "migrateAll", mkEntityDefList "entityDefs"] [...]

Since: persistent-2.7.1

mkDeleteCascade :: MkPersistSettings -> [UnboundEntityDef] -> Q [Dec] #

Generate a DeleteCascade instance for the given EntityDefs.

This function is deprecated as of 2.13.0.0. You can now set cascade behavior directly in the quasiquoter.

mkSave :: String -> [EntityDef] -> Q [Dec] #

Save the EntityDefs passed in under the given name.

This function was deprecated in persistent-2.13.0.0. It doesn't properly fix foreign keys. Please refer to mkEntityDefList for a replacement.

share :: [[a] -> Q [Dec]] -> [a] -> Q [Dec] #

Apply the given list of functions to the same EntityDefs.

This function is useful for cases such as:

>>> share [mkSave "myDefs", mkPersist sqlSettings] [persistLowerCase|...|]

persistFieldFromEntity :: MkPersistSettings -> UnboundEntityDef -> Q [Dec] #

Produce code similar to the following:

  instance PersistEntity e => PersistField e where
     toPersistValue = entityToPersistValueHelper
     fromPersistValue = entityFromPersistValueHelper ["col1", "col2"]
     sqlType _ = SqlString

fieldError :: Text -> Text -> Text -> Text #

Render an error message based on the tableName and fieldName with the provided message.

Since: persistent-2.8.2

pkNewtype :: MkPersistSettings -> UnboundEntityDef -> Bool #

Returns True if the key definition has less than 2 fields.

Since: persistent-2.11.0.0

lensPTH :: (s -> a) -> (s -> b -> t) -> Lens s t a b #

sqlSettings :: MkPersistSettings #

Use the SqlPersist backend.

mkPersistSettings #

Arguments

:: Type	Value for `mpsBackend`
-> MkPersistSettings

Create an MkPersistSettings with default values.

setImplicitIdDef :: ImplicitIdDef -> MkPersistSettings -> MkPersistSettings #

Set the ImplicitIdDef in the given MkPersistSettings. The default value is autoIncrementingInteger.

Since: persistent-2.13.0.0

mkPersistWith :: MkPersistSettings -> [EntityDef] -> [UnboundEntityDef] -> Q [Dec] #

Like '

Since: persistent-2.13.0.0

mkPersist :: MkPersistSettings -> [UnboundEntityDef] -> Q [Dec] #

Create data types and appropriate PersistEntity instances for the given EntityDefs. Works well with the persist quasi-quoter.

parseReferences :: PersistSettings -> Text -> Q Exp #

Calls parse to Quasi.parse individual entities in isolation afterwards, sets references to other entities

In 2.13.0.0, this was changed to splice in [UnboundEntityDef] instead of [EntityDef].

Since: persistent-2.5.3

embedEntityDefs #

Arguments

:: [EntityDef]

A list of EntityDef that have been defined in a previous mkPersist call.

Since: persistent-2.13.0.0

-> [UnboundEntityDef]

Takes a list of (potentially) independently defined entities and properly links all foreign keys to reference the right EntityDef, tying the knot between entities.

Allows users to define entities indepedently or in separate modules and then fix the cross-references between them at runtime to create a Migration.

Since: persistent-2.7.2

persistManyFileWith :: PersistSettings -> [FilePath] -> Q Exp #

Same as persistFileWith, but uses several external files instead of one. Splitting your Persistent definitions into multiple modules can potentially dramatically speed up compile times.

The recommended file extension is .persistentmodels.

Examples

Expand

Split your Persistent definitions into multiple files (models1, models2), then create a new module for each new file and run mkPersist there:

-- Model1.hs
share
    [mkPersist sqlSettings]
    $(persistFileWith lowerCaseSettings "models1")

-- Model2.hs
share
    [mkPersist sqlSettings]
    $(persistFileWith lowerCaseSettings "models2")

Use persistManyFileWith to create your migrations:

-- Migrate.hs
share
    [mkMigrate "migrateAll"]
    $(persistManyFileWith lowerCaseSettings ["models1.persistentmodels","models2.persistentmodels"])

Tip: To get the same import behavior as if you were declaring all your models in one file, import your new files as Name into another file, then export module Name.

This approach may be used in the future to reduce memory usage during compilation, but so far we've only seen mild reductions.

See persistent#778 and persistent#791 for more details.

Since: persistent-2.5.4

persistFileWith :: PersistSettings -> FilePath -> Q Exp #

Same as persistWith, but uses an external file instead of a quasiquotation. The recommended file extension is .persistentmodels.

persistLowerCase :: QuasiQuoter #

Apply persistWith to lowerCaseSettings.

persistUpperCase :: QuasiQuoter #

Apply persistWith to upperCaseSettings.

persistWith :: PersistSettings -> QuasiQuoter #

Converts a quasi-quoted syntax into a list of entity definitions, to be used as input to the template haskell generation code (mkPersist).

data MkPersistSettings #

Settings to be passed to the mkPersist function.

data EntityJSON #

Constructors

EntityJSON
Fields entityToJSON :: Name Name of the `toJSON` implementation for `Entity a`. entityFromJSON :: Name Name of the `fromJSON` implementation for `Entity a`.

data ImplicitIdDef #

A specification for how the implied ID columns are created.

By default, persistent will give each table a default column named id (customizable by PersistSettings), and the column type will be whatever you'd expect from BackendKey yourBackendType. For The SqlBackend type, this is an auto incrementing integer primary key.

You might want to give a different example. A common use case in postgresql is to use the UUID type, and automatically generate them using a SQL function.

Previously, you'd need to add a custom Id annotation for each model.

User
    Id   UUID default="uuid_generate_v1mc()"
    name Text

Dog
    Id   UUID default="uuid_generate_v1mc()"
    name Text
    user UserId

Now, you can simply create an ImplicitIdDef that corresponds to this declaration.

newtype UUID = UUID ByteString

instance PersistField UUID where
    toPersistValue (UUID bs) =
        PersistLiteral_ Escaped bs
    fromPersistValue pv =
        case pv of
            PersistLiteral_ Escaped bs ->
                Right (UUID bs)
            _ ->
                Left "nope"

instance PersistFieldSql UUID where
    sqlType _ = SqlOther UUID

With this instance at the ready, we can now create our implicit definition:

uuidDef :: ImplicitIdDef
uuidDef = mkImplicitIdDef @UUID "uuid_generate_v1mc()"

And we can use setImplicitIdDef to use this with the MkPersistSettings for our block.

mkPersist (setImplicitIdDef uuidDef sqlSettings) [persistLowerCase| ... |]

TODO: either explain interaction with mkMigrate or fix it. see issue #1249 for more details.

Since: persistent-2.13.0.0

limitOffsetOrder :: PersistEntity val => [SelectOpt val] -> (Int, Int, [SelectOpt val]) #

FIXME What's this exactly?

toJsonText :: ToJSON j => j -> Text #

A more general way to convert instances of ToJSON type class to strict text Text.

mapToJSON :: [(Text, PersistValue)] -> Text #

Convert map (list of tuples) into textual representation of JSON object. This is a type-constrained synonym for toJsonText.

listToJSON :: [PersistValue] -> Text #

Convert list of PersistValues into textual representation of JSON object. This is a type-constrained synonym for toJsonText.

(||.) :: [Filter v] -> [Filter v] -> [Filter v] infixl 3 #

The OR of two lists of filters. For example:

selectList
    ([ PersonAge >. 25
     , PersonAge <. 30 ] ||.
     [ PersonIncome >. 15000
     , PersonIncome <. 25000 ])
    []

will filter records where a person's age is between 25 and 30 or a person's income is between (15000 and 25000).

If you are looking for an (&&.) operator to do (A AND B AND (C OR D)) you can use the (++) operator instead as there is no (&&.). For example:

selectList
    ([ PersonAge >. 25
     , PersonAge <. 30 ] ++
    ([PersonCategory ==. 1] ||.
     [PersonCategory ==. 5]))
    []

will filter records where a person's age is between 25 and 30 and (person's category is either 1 or 5).

(/<-.) :: forall v typ. PersistField typ => EntityField v typ -> [typ] -> Filter v infix 4 #

Check if value is not in given list.

Examples

selectSimon :: MonadIO m => ReaderT SqlBackend m [Entity User]
selectSimon = selectList [UserAge /<-. [40]] []

The above query when applied on dataset-1, will produce this:

+-----+-----+-----+
|id   |name |age  |
+-----+-----+-----+
|2    |Simon|41   |
+-----+-----+-----+

(<-.) :: forall v typ. PersistField typ => EntityField v typ -> [typ] -> Filter v infix 4 #

Check if value is in given list.

Examples

selectUsers :: MonadIO m => ReaderT SqlBackend m [Entity User]
selectUsers = selectList [UserAge <-. [40, 41]] []

The above query when applied on dataset-1, will produce this:

+-----+-----+-----+
|id   |name |age  |
+-----+-----+-----+
|1    |SPJ  |40   |
+-----+-----+-----+
|2    |Simon|41   |
+-----+-----+-----+

selectSPJ :: MonadIO m => ReaderT SqlBackend m [Entity User]
selectSPJ = selectList [UserAge <-. [40]] []

The above query when applied on dataset-1, will produce this:

+-----+-----+-----+
|id   |name |age  |
+-----+-----+-----+
|1    |SPJ  |40   |
+-----+-----+-----+

(>=.) :: forall v typ. PersistField typ => EntityField v typ -> typ -> Filter v infix 4 #

Greater-than or equal check.

Examples

selectGreaterEqualAge :: MonadIO m => ReaderT SqlBackend m [Entity User]
selectGreaterEqualAge = selectList [UserAge >=. 41 ] []

The above query when applied on dataset-1, will produce this:

+-----+-----+-----+
|id   |name |age  |
+-----+-----+-----+
|2    |Simon|41   |
+-----+-----+-----+

(>.) :: forall v typ. PersistField typ => EntityField v typ -> typ -> Filter v infix 4 #

Greater-than check.

Examples

selectGreaterAge :: MonadIO m => ReaderT SqlBackend m [Entity User]
selectGreaterAge = selectList [UserAge >. 40 ] []

The above query when applied on dataset-1, will produce this:

+-----+-----+-----+
|id   |name |age  |
+-----+-----+-----+
|2    |Simon|41   |
+-----+-----+-----+

(<=.) :: forall v typ. PersistField typ => EntityField v typ -> typ -> Filter v infix 4 #

Less-than or equal check.

Examples

selectLessEqualAge :: MonadIO m => ReaderT SqlBackend m [Entity User]
selectLessEqualAge = selectList [UserAge <=. 40 ] []

The above query when applied on dataset-1, will produce this:

+-----+-----+-----+
|id   |name |age  |
+-----+-----+-----+
|1    |SPJ  |40   |
+-----+-----+-----+

(<.) :: forall v typ. PersistField typ => EntityField v typ -> typ -> Filter v infix 4 #

Less-than check.

Examples

selectLessAge :: MonadIO m => ReaderT SqlBackend m [Entity User]
selectLessAge = selectList [UserAge <. 41 ] []

The above query when applied on dataset-1, will produce this:

+-----+-----+-----+
|id   |name |age  |
+-----+-----+-----+
|1    |SPJ  |40   |
+-----+-----+-----+

(!=.) :: forall v typ. PersistField typ => EntityField v typ -> typ -> Filter v infix 4 #

Non-equality check.

Examples

selectSimon :: MonadIO m => ReaderT SqlBackend m [Entity User]
selectSimon = selectList [UserName !=. "SPJ" ] []

The above query when applied on dataset-1, will produce this:

+-----+-----+-----+
|id   |name |age  |
+-----+-----+-----+
|2    |Simon|41   |
+-----+-----+-----+

(==.) :: forall v typ. PersistField typ => EntityField v typ -> typ -> Filter v infix 4 #

Check for equality.

Examples

selectSPJ :: MonadIO m => ReaderT SqlBackend m [Entity User]
selectSPJ = selectList [UserName ==. "SPJ" ] []

The above query when applied on dataset-1, will produce this:

+-----+-----+-----+
|id   |name |age  |
+-----+-----+-----+
|1    |SPJ  |40   |
+-----+-----+-----+

(/=.) :: forall v typ. PersistField typ => EntityField v typ -> typ -> Update v infixr 3 #

Assign a field by division (/=).

Examples

divideAge :: MonadIO m => ReaderT SqlBackend m ()
divideAge = updateWhere [UserName ==. "SPJ" ] [UserAge /=. 2]

The above query when applied on dataset-1, will produce this:

+-----+-----+---------+
|id   |name |age      |
+-----+-----+---------+
|1    |SPJ  |40 -> 20 |
+-----+-----+---------+
|2    |Simon|41       |
+-----+-----+---------+

(*=.) :: forall v typ. PersistField typ => EntityField v typ -> typ -> Update v infixr 3 #

Assign a field by multiplication (*=).

Examples

multiplyAge :: MonadIO m => ReaderT SqlBackend m ()
multiplyAge = updateWhere [UserName ==. "SPJ" ] [UserAge *=. 2]

The above query when applied on dataset-1, will produce this:

+-----+-----+--------+
|id   |name |age     |
+-----+-----+--------+
|1    |SPJ  |40 -> 80|
+-----+-----+--------+
|2    |Simon|41      |
+-----+-----+--------+

(-=.) :: forall v typ. PersistField typ => EntityField v typ -> typ -> Update v infixr 3 #

Assign a field by subtraction (-=).

Examples

subtractAge :: MonadIO m => ReaderT SqlBackend m ()
subtractAge = updateWhere [UserName ==. "SPJ" ] [UserAge -=. 1]

The above query when applied on dataset-1, will produce this:

+-----+-----+---------+
|id   |name |age      |
+-----+-----+---------+
|1    |SPJ  |40 -> 39 |
+-----+-----+---------+
|2    |Simon|41       |
+-----+-----+---------+

(+=.) :: forall v typ. PersistField typ => EntityField v typ -> typ -> Update v infixr 3 #

Assign a field by addition (+=).

Examples

addAge :: MonadIO m => ReaderT SqlBackend m ()
addAge = updateWhere [UserName ==. "SPJ" ] [UserAge +=. 1]

The above query when applied on dataset-1, will produce this:

+-----+-----+---------+
|id   |name |age      |
+-----+-----+---------+
|1    |SPJ  |40 -> 41 |
+-----+-----+---------+
|2    |Simon|41       |
+-----+-----+---------+

(=.) :: forall v typ. PersistField typ => EntityField v typ -> typ -> Update v infixr 3 #

Assign a field a value.

Examples

updateAge :: MonadIO m => ReaderT SqlBackend m ()
updateAge = updateWhere [UserName ==. "SPJ" ] [UserAge =. 45]

Similar to updateWhere which is shown in the above example you can use other functions present in the module Database.Persist.Class. Note that the first parameter of updateWhere is [Filter val] and second parameter is [Update val]. By comparing this with the type of ==. and =., you can see that they match up in the above usage.

The above query when applied on dataset-1, will produce this:

+-----+-----+--------+
|id   |name |age     |
+-----+-----+--------+
|1    |SPJ  |40 -> 45|
+-----+-----+--------+
|2    |Simon|41      |
+-----+-----+--------+

type PersistUnique a = PersistUniqueWrite a #

A backwards-compatible alias for those that don't care about distinguishing between read and write queries. It signifies the assumption that, by default, a backend can write as well as read.

type PersistQuery a = PersistQueryWrite a #

A backwards-compatible alias for those that don't care about distinguishing between read and write queries. It signifies the assumption that, by default, a backend can write as well as read.

type PersistStore a = PersistStoreWrite a #

A backwards-compatible alias for those that don't care about distinguishing between read and write queries. It signifies the assumption that, by default, a backend can write as well as read.

deleteCascadeWhere :: forall record backend (m :: Type -> Type). (MonadIO m, DeleteCascade record backend, PersistQueryWrite backend) => [Filter record] -> ReaderT backend m () #

Cascade-deletion of entries satisfying given filters.

class (PersistStoreWrite backend, PersistEntity record, BaseBackend backend ~ PersistEntityBackend record) => DeleteCascade record backend where #

For combinations of backends and entities that support cascade-deletion. “Cascade-deletion” means that entries that depend on other entries to be deleted will be deleted as well.

Methods

deleteCascade :: forall (m :: Type -> Type). MonadIO m => Key record -> ReaderT backend m () #

Perform cascade-deletion of single database entry.

selectKeysList :: forall record backend (m :: Type -> Type). (MonadIO m, PersistQueryRead backend, PersistRecordBackend record backend) => [Filter record] -> [SelectOpt record] -> ReaderT backend m [Key record] #

Call selectKeys but return the result as a list.

selectList :: forall record backend (m :: Type -> Type). (MonadIO m, PersistQueryRead backend, PersistRecordBackend record backend) => [Filter record] -> [SelectOpt record] -> ReaderT backend m [Entity record] #

Returns a [Entity record] corresponding to the filters and options provided.

Filters are constructed using the operators defined in Database.Persist (and re-exported from Database.Persist.Sql). Let's look at some examples:

usersWithAgeOver40 :: SqlPersistT IO [Entity User]
usersWithAgeOver40 =
    selectList [UserAge >=. 40] []

If you provide multiple values in the list, the conditions are ANDed together.

usersWithAgeBetween30And50 :: SqlPersistT IO [Entity User]
usersWithAgeBetween30And50 =
     selectList
         [ UserAge >=. 30
         , UserAge <=. 50
         ]
         []

The second list contains the SelectOpt for a record. We can select the first ten records with LimitTo

firstTenUsers =
    selectList [] [LimitTo 10]

And we can select the second ten users with OffsetBy.

secondTenUsers =
    selectList [] [LimitTo 10, OffsetBy 10]

Warning that LIMIT/OFFSET is bad for pagination!

With Asc and Desc, we can provide the field we want to sort on. We can provide multiple sort orders - later ones are used to sort records that are equal on the first field.

newestUsers =
    selectList [] [Desc UserCreatedAt, LimitTo 10]

oldestUsers =
    selectList [] [Asc UserCreatedAt, LimitTo 10]

selectKeys :: forall record backend (m :: Type -> Type). (PersistQueryRead backend, MonadResource m, PersistRecordBackend record backend, MonadReader backend m) => [Filter record] -> [SelectOpt record] -> ConduitM () (Key record) m () #

Get the Keys of all records matching the given criterion.

For an example, see selectList.

selectSource :: forall record backend (m :: Type -> Type). (PersistQueryRead backend, MonadResource m, PersistRecordBackend record backend, MonadReader backend m) => [Filter record] -> [SelectOpt record] -> ConduitM () (Entity record) m () #

Get all records matching the given criterion in the specified order. Returns also the identifiers.

WARNING: This function returns a ConduitM, which implies that it streams the results. It does not stream results on most backends. If you need streaming, see persistent-pagination for a means of chunking results based on indexed ranges.

class (PersistCore backend, PersistStoreRead backend) => PersistQueryRead backend where #

Backends supporting conditional read operations.

Minimal complete definition

selectSourceRes, selectKeysRes, count, exists

Methods

selectSourceRes :: forall record (m1 :: Type -> Type) (m2 :: Type -> Type). (PersistRecordBackend record backend, MonadIO m1, MonadIO m2) => [Filter record] -> [SelectOpt record] -> ReaderT backend m1 (Acquire (ConduitM () (Entity record) m2 ())) #

Get all records matching the given criterion in the specified order. Returns also the identifiers.

NOTE: This function returns an Acquire and a ConduitM, which implies that it streams from the database. It does not. Please use selectList to simplify the code. If you want streaming behavior, consider persistent-pagination which efficiently chunks a query into ranges, or investigate a backend-specific streaming solution.

selectFirst :: forall (m :: Type -> Type) record. (MonadIO m, PersistRecordBackend record backend) => [Filter record] -> [SelectOpt record] -> ReaderT backend m (Maybe (Entity record)) #

Get just the first record for the criterion.

selectKeysRes :: forall (m1 :: Type -> Type) (m2 :: Type -> Type) record. (MonadIO m1, MonadIO m2, PersistRecordBackend record backend) => [Filter record] -> [SelectOpt record] -> ReaderT backend m1 (Acquire (ConduitM () (Key record) m2 ())) #

Get the Keys of all records matching the given criterion.

count :: forall (m :: Type -> Type) record. (MonadIO m, PersistRecordBackend record backend) => [Filter record] -> ReaderT backend m Int #

The total number of records fulfilling the given criterion.

exists :: forall (m :: Type -> Type) record. (MonadIO m, PersistRecordBackend record backend) => [Filter record] -> ReaderT backend m Bool #

Check if there is at least one record fulfilling the given criterion.

Since: persistent-2.11

class (PersistQueryRead backend, PersistStoreWrite backend) => PersistQueryWrite backend where #

Backends supporting conditional write operations

Methods

updateWhere :: forall (m :: Type -> Type) record. (MonadIO m, PersistRecordBackend record backend) => [Filter record] -> [Update record] -> ReaderT backend m () #

Update individual fields on any record matching the given criterion.

deleteWhere :: forall (m :: Type -> Type) record. (MonadIO m, PersistRecordBackend record backend) => [Filter record] -> ReaderT backend m () #

Delete all records matching the given criterion.

checkUniqueUpdateable :: forall record backend (m :: Type -> Type). (MonadIO m, PersistRecordBackend record backend, PersistUniqueRead backend) => Entity record -> ReaderT backend m (Maybe (Unique record)) #

Check whether there are any conflicts for unique keys with this entity and existing entities in the database.

Returns Nothing if the entity would stay unique, and could thus safely be updated. on a conflict returns the conflicting key

This is similar to checkUnique, except it's useful for updating - when the particular entity already exists, it would normally conflict with itself. This variant ignores those conflicts

Example usage

Expand

We use schema-1 and dataset-1 here.

This would be Nothing:

mAlanConst <- checkUnique $ User "Alan" 70

While this would be Just because SPJ already exists:

mSpjConst <- checkUnique $ User "SPJ" 60

Since: persistent-2.11.0.0

checkUnique :: forall record backend (m :: Type -> Type). (MonadIO m, PersistRecordBackend record backend, PersistUniqueRead backend) => record -> ReaderT backend m (Maybe (Unique record)) #

Check whether there are any conflicts for unique keys with this entity and existing entities in the database.

Returns Nothing if the entity would be unique, and could thus safely be inserted. on a conflict returns the conflicting key

Example usage

Expand

We use schema-1 and dataset-1 here.

This would be Nothing:

mAlanConst <- checkUnique $ User "Alan" 70

While this would be Just because SPJ already exists:

mSpjConst <- checkUnique $ User "SPJ" 60

replaceUnique :: forall record backend (m :: Type -> Type). (MonadIO m, Eq (Unique record), PersistRecordBackend record backend, PersistUniqueWrite backend) => Key record -> record -> ReaderT backend m (Maybe (Unique record)) #

Attempt to replace the record of the given key with the given new record. First query the unique fields to make sure the replacement maintains uniqueness constraints.

Return Nothing if the replacement was made. If uniqueness is violated, return a Just with the Unique violation

Since: persistent-1.2.2.0

getByValue :: forall record (m :: Type -> Type) backend. (MonadIO m, PersistUniqueRead backend, PersistRecordBackend record backend, AtLeastOneUniqueKey record) => record -> ReaderT backend m (Maybe (Entity record)) #

A modification of getBy, which takes the PersistEntity itself instead of a Unique record. Returns a record matching one of the unique keys. This function makes the most sense on entities with a single Unique constructor.

Example usage

Expand

With schema-1 and dataset-1,

getBySpjValue :: MonadIO m => ReaderT SqlBackend m (Maybe (Entity User)) getBySpjValue = getByValue $ User SPJ 999

mSpjEnt <- getBySpjValue

The above query when applied on dataset-1, will get this record:

+----+------+-----+
| id | name | age |
+----+------+-----+
|  1 | SPJ  |  40 |
+----+------+-----+

onlyUnique :: forall record backend (m :: Type -> Type). (MonadIO m, PersistUniqueWrite backend, PersistRecordBackend record backend, OnlyOneUniqueKey record) => record -> ReaderT backend m (Unique record) #

Return the single unique key for a record.

Example usage

Expand

We use shcema-1 and dataset-1 here.

onlySimonConst :: MonadIO m => ReaderT SqlBackend m (Unique User)
onlySimonConst = onlyUnique $ User "Simon" 999

mSimonConst <- onlySimonConst

mSimonConst would be Simon's uniqueness constraint. Note that onlyUnique doesn't work if there're more than two constraints. It will fail with a type error instead.

insertUniqueEntity :: forall record backend (m :: Type -> Type). (MonadIO m, PersistRecordBackend record backend, PersistUniqueWrite backend) => record -> ReaderT backend m (Maybe (Entity record)) #

Like insertEntity, but returns Nothing when the record couldn't be inserted because of a uniqueness constraint.

Example usage

Expand

We use schema-2 and dataset-1 here.

insertUniqueSpjEntity :: MonadIO m => ReaderT SqlBackend m (Maybe (Entity User))
insertUniqueSpjEntity = insertUniqueEntity $ User "SPJ" 50

mSpjEnt <- insertUniqueSpjEntity

The above query results Nothing as SPJ already exists.

insertUniqueAlexaEntity :: MonadIO m => ReaderT SqlBackend m (Maybe (Entity User))
insertUniqueAlexaEntity = insertUniqueEntity $ User "Alexa" 3

mAlexaEnt <- insertUniqueSpjEntity

Because there's no such unique keywords of the given record, the above query when applied on dataset-1, will produce this:

+----+-------+-----+
| id | name  | age |
+----+-------+-----+
|  1 | SPJ   |  40 |
+----+-------+-----+
|  2 | Simon |  41 |
+----+-------+-----+
|  3 | Alexa |   3 |
+----+-------+-----+

Since: persistent-2.7.1

insertBy :: forall record backend (m :: Type -> Type). (MonadIO m, PersistUniqueWrite backend, PersistRecordBackend record backend, AtLeastOneUniqueKey record) => record -> ReaderT backend m (Either (Entity record) (Key record)) #

Insert a value, checking for conflicts with any unique constraints. If a duplicate exists in the database, it is returned as Left. Otherwise, the new 'Key is returned as Right.

Example usage

Expand

With schema-2 and dataset-1, we have following lines of code:

l1 <- insertBy $ User "SPJ" 20
l2 <- insertBy $ User "XXX" 41
l3 <- insertBy $ User "SPJ" 40
r1 <- insertBy $ User "XXX" 100

First three lines return Left because there're duplicates in given record's uniqueness constraints. While the last line returns a new key as Right.

onlyOneUniqueDef :: (OnlyOneUniqueKey record, Monad proxy) => proxy record -> UniqueDef #

Given a proxy for a PersistEntity record, this returns the sole UniqueDef for that entity.

Since: persistent-2.13.0.0

class PersistStoreRead backend => PersistUniqueRead backend where #

Queries against Unique keys (other than the id Key).

Please read the general Persistent documentation to learn how to create Unique keys.

Using this with an Entity without a Unique key leads to undefined behavior. A few of these functions require a single Unique, so using an Entity with multiple Uniques is also undefined. In these cases persistent's goal is to throw an exception as soon as possible, but persistent is still transitioning to that.

SQL backends automatically create uniqueness constraints, but for MongoDB you must manually place a unique index on a field to have a uniqueness constraint.

Methods

getBy :: forall record (m :: Type -> Type). (MonadIO m, PersistRecordBackend record backend) => Unique record -> ReaderT backend m (Maybe (Entity record)) #

Get a record by unique key, if available. Returns also the identifier.

Example usage

Expand

With schema-1 and dataset-1:

getBySpjName :: MonadIO m  => ReaderT SqlBackend m (Maybe (Entity User))
getBySpjName = getBy $ UniqueUserName "SPJ"

mSpjEnt <- getBySpjName

The above query when applied on dataset-1, will get this entity:

+----+------+-----+
| id | name | age |
+----+------+-----+
|  1 | SPJ  |  40 |
+----+------+-----+

class (PersistUniqueRead backend, PersistStoreWrite backend) => PersistUniqueWrite backend where #

Some functions in this module (insertUnique, insertBy, and replaceUnique) first query the unique indexes to check for conflicts. You could instead optimistically attempt to perform the operation (e.g. replace instead of replaceUnique). However,

there is some fragility to trying to catch the correct exception and determing the column of failure;
an exception will automatically abort the current SQL transaction.

Minimal complete definition

deleteBy

Methods

deleteBy :: forall record (m :: Type -> Type). (MonadIO m, PersistRecordBackend record backend) => Unique record -> ReaderT backend m () #

Delete a specific record by unique key. Does nothing if no record matches.

Example usage

Expand

With schema-1 and dataset-1,

deleteBySpjName :: MonadIO m => ReaderT SqlBackend m ()
deleteBySpjName = deleteBy UniqueUserName "SPJ"

The above query when applied on dataset-1, will produce this:

+-----+------+-----+
|id   |name  |age  |
+-----+------+-----+
|2    |Simon |41   |
+-----+------+-----+

insertUnique :: forall record (m :: Type -> Type). (MonadIO m, PersistRecordBackend record backend) => record -> ReaderT backend m (Maybe (Key record)) #

Like insert, but returns Nothing when the record couldn't be inserted because of a uniqueness constraint.

Example usage

Expand

With schema-1 and dataset-1, we try to insert the following two records:

linusId <- insertUnique $ User "Linus" 48
spjId   <- insertUnique $ User "SPJ" 90

+-----+------+-----+
|id   |name  |age  |
+-----+------+-----+
|1    |SPJ   |40   |
+-----+------+-----+
|2    |Simon |41   |
+-----+------+-----+
|3    |Linus |48   |
+-----+------+-----+

Linus's record was inserted to dataset-1, while SPJ wasn't because SPJ already exists in dataset-1.

upsert #

Arguments

:: forall record (m :: Type -> Type). (MonadIO m, PersistRecordBackend record backend, OnlyOneUniqueKey record)
=> record	new record to insert
-> [Update record]	updates to perform if the record already exists
-> ReaderT backend m (Entity record)	the record in the database after the operation

Update based on a uniqueness constraint or insert:

insert the new record if it does not exist;
If the record exists (matched via it's uniqueness constraint), then update the existing record with the parameters which is passed on as list to the function.

Example usage

Expand

First, we try to explain upsert using schema-1 and dataset-1.

upsertSpj :: MonadIO m => [Update User] -> ReaderT SqlBackend m (Maybe (Entity User))
upsertSpj updates = upsert (User "SPJ" 999) upadtes

mSpjEnt <- upsertSpj [UserAge +=. 15]

The above query when applied on dataset-1, will produce this:

+-----+-----+--------+
|id   |name |age     |
+-----+-----+--------+
|1    |SPJ  |40 -> 55|
+-----+-----+--------+
|2    |Simon|41      |
+-----+-----+--------+

upsertX :: MonadIO m => [Update User] -> ReaderT SqlBackend m (Maybe (Entity User))
upsertX updates = upsert (User "X" 999) updates

mXEnt <- upsertX [UserAge +=. 15]

The above query when applied on dataset-1, will produce this:

+-----+-----+--------+
|id   |name |age     |
+-----+-----+--------+
|1    |SPJ  |40      |
+-----+-----+--------+
|2    |Simon|41      |
+-----+-----+--------+
|3    |X    |999     |
+-----+-----+--------+

Next, what if the schema has two uniqueness constraints? Let's check it out using schema-2:

mSpjEnt <- upsertSpj [UserAge +=. 15]

This fails with a compile-time type error alerting us to the fact that this record has multiple unique keys, and suggests that we look for upsertBy to select the unique key we want.

upsertBy #

Arguments

:: forall record (m :: Type -> Type). (MonadIO m, PersistRecordBackend record backend)
=> Unique record	uniqueness constraint to find by
-> record	new record to insert
-> [Update record]	updates to perform if the record already exists
-> ReaderT backend m (Entity record)	the record in the database after the operation

Update based on a given uniqueness constraint or insert:

insert the new record if it does not exist;
update the existing record that matches the given uniqueness constraint.

Example usage

Expand

We try to explain upsertBy using schema-2 and dataset-1.

upsertBySpjName :: MonadIO m => User -> [Update User] -> ReaderT SqlBackend m (Entity User)
upsertBySpjName record updates = upsertBy (UniqueUserName "SPJ") record updates

mSpjEnt <- upsertBySpjName (Person "X" 999) [PersonAge += .15]

The above query will alter dataset-1 to:

+-----+-----+--------+
|id   |name |age     |
+-----+-----+--------+
|1    |SPJ  |40 -> 55|
+-----+-----+--------+
|2    |Simon|41      |
+-----+-----+--------+

upsertBySimonAge :: MonadIO m => User -> [Update User] -> ReaderT SqlBackend m (Entity User)
upsertBySimonAge record updates = upsertBy (UniqueUserName "SPJ") record updates

mPhilipEnt <- upsertBySimonAge (User "X" 999) [UserName =. "Philip"]

The above query will alter dataset-1 to:

+----+-----------------+-----+
| id |      name       | age |
+----+-----------------+-----+
|  1 | SPJ             |  40 |
+----+-----------------+-----+
|  2 | Simon -> Philip |  41 |
+----+-----------------+-----+

upsertByUnknownName :: MonadIO m => User -> [Update User] -> ReaderT SqlBackend m (Entity User)
upsertByUnknownName record updates = upsertBy (UniqueUserName "Unknown") record updates

mXEnt <- upsertByUnknownName (User "X" 999) [UserAge +=. 15]

This query will alter dataset-1 to:

+-----+-----+-----+
|id   |name |age  |
+-----+-----+-----+
|1    |SPJ  |40   |
+-----+-----+-----+
|2    |Simon|41   |
+-----+-----+-----+
|3    |X    |999  |
+-----+-----+-----+

putMany #

Arguments

:: forall record (m :: Type -> Type). (MonadIO m, PersistRecordBackend record backend)
=> [record]	A list of the records you want to insert or replace.
-> ReaderT backend m ()

Put many records into db

insert new records that do not exist (or violate any unique constraints)
replace existing records (matching any unique constraint)

Since: persistent-2.8.1

class PersistEntity record => OnlyOneUniqueKey record where #

This class is used to ensure that upsert is only called on records that have a single Unique key. The quasiquoter automatically generates working instances for appropriate records, and generates TypeError instances for records that have 0 or multiple unique keys.

Since: persistent-2.10.0

Methods

onlyUniqueP :: record -> Unique record #

type NoUniqueKeysError ty = (('Text "The entity " :<>: 'ShowType ty) :<>: 'Text " does not have any unique keys.") :$$: ('Text "The function you are trying to call requires a unique key " :<>: 'Text "to be defined on the entity.") #

This is an error message. It is used when writing instances of OnlyOneUniqueKey for an entity that has no unique keys.

Since: persistent-2.10.0

type MultipleUniqueKeysError ty = ((('Text "The entity " :<>: 'ShowType ty) :<>: 'Text " has multiple unique keys.") :$$: ('Text "The function you are trying to call requires only a single " :<>: 'Text "unique key.")) :$$: (('Text "There is probably a variant of the function with 'By' " :<>: 'Text "appended that will allow you to select a unique key ") :<>: 'Text "for the operation.") #

This is an error message. It is used when an entity has multiple unique keys, and the function expects a single unique key.

Since: persistent-2.10.0

class PersistEntity record => AtLeastOneUniqueKey record where #

This class is used to ensure that functions requring at least one unique key are not called with records that have 0 unique keys. The quasiquoter automatically writes working instances for appropriate entities, and generates TypeError instances for records that have 0 unique keys.

Since: persistent-2.10.0

Methods

requireUniquesP :: record -> NonEmpty (Unique record) #

insertRecord :: forall record backend (m :: Type -> Type). (PersistEntityBackend record ~ BaseBackend backend, PersistEntity record, MonadIO m, PersistStoreWrite backend) => record -> ReaderT backend m record #

Like insertEntity but just returns the record instead of Entity.

Example usage

Expand

With schema-1 and dataset-1,

insertDaveRecord :: MonadIO m => ReaderT SqlBackend m User
insertDaveRecord = insertRecord $ User "Dave" 50

dave <- insertDaveRecord

The above query when applied on dataset-1, will produce this:

+-----+------+-----+
|id   |name  |age  |
+-----+------+-----+
|1    |SPJ   |40   |
+-----+------+-----+
|2    |Simon |41   |
+-----+------+-----+
|3    |Dave  |50   |
+-----+------+-----+

Since: persistent-2.6.1

getEntity :: forall e backend (m :: Type -> Type). (PersistStoreRead backend, PersistRecordBackend e backend, MonadIO m) => Key e -> ReaderT backend m (Maybe (Entity e)) #

Like get, but returns the complete Entity.

Example usage

Expand

With schema-1 and dataset-1,

getSpjEntity :: MonadIO m => ReaderT SqlBackend m (Maybe (Entity User))
getSpjEntity = getEntity spjId

mSpjEnt <- getSpjEntity

The above query when applied on dataset-1, will get this entity:

+----+------+-----+
| id | name | age |
+----+------+-----+
|  1 | SPJ  |  40 |
+----+------+-----+

insertEntity :: forall e backend (m :: Type -> Type). (PersistStoreWrite backend, PersistRecordBackend e backend, MonadIO m) => e -> ReaderT backend m (Entity e) #

Like insert, but returns the complete Entity.

Example usage

Expand

With schema-1 and dataset-1,

insertHaskellEntity :: MonadIO m => ReaderT SqlBackend m (Entity User)
insertHaskellEntity = insertEntity $ User "Haskell" 81

haskellEnt <- insertHaskellEntity

The above query when applied on dataset-1, will produce this:

+----+---------+-----+
| id |  name   | age |
+----+---------+-----+
|  1 | SPJ     |  40 |
+----+---------+-----+
|  2 | Simon   |  41 |
+----+---------+-----+
|  3 | Haskell |  81 |
+----+---------+-----+

belongsToJust :: forall ent1 ent2 backend (m :: Type -> Type). (PersistStoreRead backend, PersistEntity ent1, PersistRecordBackend ent2 backend, MonadIO m) => (ent1 -> Key ent2) -> ent1 -> ReaderT backend m ent2 #

Same as belongsTo, but uses getJust and therefore is similarly unsafe.

belongsTo :: forall ent1 ent2 backend (m :: Type -> Type). (PersistStoreRead backend, PersistEntity ent1, PersistRecordBackend ent2 backend, MonadIO m) => (ent1 -> Maybe (Key ent2)) -> ent1 -> ReaderT backend m (Maybe ent2) #

Curry this to make a convenience function that loads an associated model.

foreign = belongsTo foreignId

getJustEntity :: forall record backend (m :: Type -> Type). (PersistEntityBackend record ~ BaseBackend backend, MonadIO m, PersistEntity record, PersistStoreRead backend) => Key record -> ReaderT backend m (Entity record) #

Same as getJust, but returns an Entity instead of just the record.

Example usage

Expand

With schema-1 and dataset-1,

getJustEntitySpj :: MonadIO m => ReaderT SqlBackend m (Entity User)
getJustEntitySpj = getJustEntity spjId

spjEnt <- getJustEntitySpj

The above query when applied on dataset-1, will get this entity:

+----+------+-----+
| id | name | age |
+----+------+-----+
|  1 | SPJ  |  40 |
+----+------+-----+

Since: persistent-2.6.1

getJust :: forall record backend (m :: Type -> Type). (PersistStoreRead backend, PersistRecordBackend record backend, MonadIO m) => Key record -> ReaderT backend m record #

Same as get, but for a non-null (not Maybe) foreign key. Unsafe unless your database is enforcing that the foreign key is valid.

Example usage

Expand

With schema-1 and dataset-1,

getJustSpj :: MonadIO m => ReaderT SqlBackend m User
getJustSpj = getJust spjId

spj <- getJust spjId

The above query when applied on dataset-1, will get this record:

+----+------+-----+
| id | name | age |
+----+------+-----+
|  1 | SPJ  |  40 |
+----+------+-----+

getJustUnknown :: MonadIO m => ReaderT SqlBackend m User
getJustUnknown = getJust unknownId

mrx <- getJustUnknown

This just throws an error.

liftPersist :: (MonadIO m, MonadReader backend m) => ReaderT backend IO b -> m b #

withCompatibleBackend :: forall sup sub (m :: Type -> Type) a. BackendCompatible sup sub => ReaderT sup m a -> ReaderT sub m a #

Run a query against a compatible backend, by projecting the backend

This is a helper for using queries which run against a specific backend type that your backend is compatible with.

Since: persistent-2.12.0

withBaseBackend :: forall backend (m :: Type -> Type) a. HasPersistBackend backend => ReaderT (BaseBackend backend) m a -> ReaderT backend m a #

Run a query against a larger backend by plucking out BaseBackend backend

This is a helper for reusing existing queries when expanding the backend type.

Since: persistent-2.12.0

type family BaseBackend backend #

Instances

Instances details

type BaseBackend SqlReadBackend
Instance details Defined in Database.Persist.Sql.Types.Internal type BaseBackend SqlReadBackend = SqlBackend
type BaseBackend SqlWriteBackend
Instance details Defined in Database.Persist.Sql.Types.Internal type BaseBackend SqlWriteBackend = SqlBackend
type BaseBackend SqlBackend
Instance details Defined in Database.Persist.SqlBackend.Internal type BaseBackend SqlBackend = SqlBackend

class HasPersistBackend backend where #

Class which allows the plucking of a BaseBackend backend from some larger type. For example, instance HasPersistBackend (SqlReadBackend, Int) where type BaseBackend (SqlReadBackend, Int) = SqlBackend persistBackend = unSqlReadBackend . fst

Associated Types

type BaseBackend backend #

Methods

persistBackend :: backend -> BaseBackend backend #

Instances

Instances details

HasPersistBackend SqlReadBackend
Instance details Defined in Database.Persist.Sql.Types.Internal Associated Types type BaseBackend SqlReadBackend # Methods persistBackend :: SqlReadBackend -> BaseBackend SqlReadBackend #
HasPersistBackend SqlWriteBackend
Instance details Defined in Database.Persist.Sql.Types.Internal Associated Types type BaseBackend SqlWriteBackend # Methods persistBackend :: SqlWriteBackend -> BaseBackend SqlWriteBackend #
HasPersistBackend SqlBackend
Instance details Defined in Database.Persist.SqlBackend.Internal Associated Types type BaseBackend SqlBackend # Methods persistBackend :: SqlBackend -> BaseBackend SqlBackend #

class HasPersistBackend backend => IsPersistBackend backend #

Class which witnesses that backend is essentially the same as BaseBackend backend. That is, they're isomorphic and backend is just some wrapper over BaseBackend backend.

Minimal complete definition

mkPersistBackend

Instances

Instances details

IsPersistBackend SqlReadBackend
Instance details Defined in Database.Persist.Sql.Types.Internal Methods mkPersistBackend :: BaseBackend SqlReadBackend -> SqlReadBackend #
IsPersistBackend SqlWriteBackend
Instance details Defined in Database.Persist.Sql.Types.Internal Methods mkPersistBackend :: BaseBackend SqlWriteBackend -> SqlWriteBackend #
IsPersistBackend SqlBackend
Instance details Defined in Database.Persist.SqlBackend.Internal Methods mkPersistBackend :: BaseBackend SqlBackend -> SqlBackend #

class BackendCompatible sup sub where #

This class witnesses that two backend are compatible, and that you can convert from the sub backend into the sup backend. This is similar to the HasPersistBackend and IsPersistBackend classes, but where you don't want to fix the type associated with the PersistEntityBackend of a record.

Generally speaking, where you might have:

foo ::
  ( PersistEntity record
  , PeristEntityBackend record ~ BaseBackend backend
  , IsSqlBackend backend
  )

this can be replaced with:

foo ::
  ( PersistEntity record,
  , PersistEntityBackend record ~ backend
  , BackendCompatible SqlBackend backend
  )

This works for SqlReadBackend because of the instance BackendCompatible SqlBackend SqlReadBackend, without needing to go through the BaseBackend type family.

Likewise, functions that are currently hardcoded to use SqlBackend can be generalized:

-- before:
asdf :: ReaderT SqlBackend m ()
asdf = pure ()

-- after:
asdf' :: BackendCompatible SqlBackend backend => ReaderT backend m ()
asdf' = withCompatibleBackend asdf

Since: persistent-2.7.1

Methods

projectBackend :: sub -> sup #

type PersistRecordBackend record backend = (PersistEntity record, PersistEntityBackend record ~ BaseBackend backend) #

A convenient alias for common type signatures

class (PersistEntity record, PersistEntityBackend record ~ backend, PersistCore backend) => ToBackendKey backend record where #

ToBackendKey converts a PersistEntity Key into a BackendKey This can be used by each backend to convert between a Key and a plain Haskell type. For Sql, that is done with toSqlKey and fromSqlKey.

By default, a PersistEntity uses the default BackendKey for its Key and is an instance of ToBackendKey

A Key that instead uses a custom type will not be an instance of ToBackendKey.

Methods

toBackendKey :: Key record -> BackendKey backend #

fromBackendKey :: BackendKey backend -> Key record #

data family BackendKey backend #

Instances

Instances details

newtype BackendKey SqlReadBackend
Instance details Defined in Database.Persist.Sql.Orphan.PersistStore newtype BackendKey SqlReadBackend = SqlReadBackendKey { unSqlReadBackendKey :: Int64 }
newtype BackendKey SqlWriteBackend
Instance details Defined in Database.Persist.Sql.Orphan.PersistStore newtype BackendKey SqlWriteBackend = SqlWriteBackendKey { unSqlWriteBackendKey :: Int64 }
newtype BackendKey SqlBackend
Instance details Defined in Database.Persist.Sql.Orphan.PersistStore newtype BackendKey SqlBackend = SqlBackendKey { unSqlBackendKey :: Int64 }
type Rep (BackendKey SqlReadBackend)
Instance details Defined in Database.Persist.Sql.Orphan.PersistStore type Rep (BackendKey SqlReadBackend) = D1 ('MetaData "BackendKey" "Database.Persist.Sql.Orphan.PersistStore" "persistent-2.13.2.1-LDF7mxBTcAzIVuQQYVnMhe" 'True) (C1 ('MetaCons "SqlReadBackendKey" 'PrefixI 'True) (S1 ('MetaSel ('Just "unSqlReadBackendKey") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Int64)))
type Rep (BackendKey SqlWriteBackend)
Instance details Defined in Database.Persist.Sql.Orphan.PersistStore type Rep (BackendKey SqlWriteBackend) = D1 ('MetaData "BackendKey" "Database.Persist.Sql.Orphan.PersistStore" "persistent-2.13.2.1-LDF7mxBTcAzIVuQQYVnMhe" 'True) (C1 ('MetaCons "SqlWriteBackendKey" 'PrefixI 'True) (S1 ('MetaSel ('Just "unSqlWriteBackendKey") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Int64)))
type Rep (BackendKey SqlBackend)
Instance details Defined in Database.Persist.Sql.Orphan.PersistStore type Rep (BackendKey SqlBackend) = D1 ('MetaData "BackendKey" "Database.Persist.Sql.Orphan.PersistStore" "persistent-2.13.2.1-LDF7mxBTcAzIVuQQYVnMhe" 'True) (C1 ('MetaCons "SqlBackendKey" 'PrefixI 'True) (S1 ('MetaSel ('Just "unSqlBackendKey") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Int64)))

class PersistCore backend #

Associated Types

data BackendKey backend #

class (Show (BackendKey backend), Read (BackendKey backend), Eq (BackendKey backend), Ord (BackendKey backend), PersistCore backend, PersistField (BackendKey backend), ToJSON (BackendKey backend), FromJSON (BackendKey backend)) => PersistStoreRead backend where #

Minimal complete definition

get

Methods

get :: forall record (m :: Type -> Type). (MonadIO m, PersistRecordBackend record backend) => Key record -> ReaderT backend m (Maybe record) #

Get a record by identifier, if available.

Example usage

Expand

With schema-1 and dataset-1,

getSpj :: MonadIO m => ReaderT SqlBackend m (Maybe User)
getSpj = get spjId

mspj <- getSpj

The above query when applied on dataset-1, will get this:

+------+-----+
| name | age |
+------+-----+
| SPJ  |  40 |
+------+-----+

getMany :: forall record (m :: Type -> Type). (MonadIO m, PersistRecordBackend record backend) => [Key record] -> ReaderT backend m (Map (Key record) record) #

Get many records by their respective identifiers, if available.

Example usage

Expand

With schema-1 and dataset-1:

getUsers :: MonadIO m => ReaderT SqlBackend m (Map (Key User) User)
getUsers = getMany allkeys

musers <- getUsers

The above query when applied on dataset-1, will get these records:

+----+-------+-----+
| id | name  | age |
+----+-------+-----+
|  1 | SPJ   |  40 |
+----+-------+-----+
|  2 | Simon |  41 |
+----+-------+-----+

Since: persistent-2.8.1

class (Show (BackendKey backend), Read (BackendKey backend), Eq (BackendKey backend), Ord (BackendKey backend), PersistStoreRead backend, PersistField (BackendKey backend), ToJSON (BackendKey backend), FromJSON (BackendKey backend)) => PersistStoreWrite backend where #

Minimal complete definition

insert, insertKey, repsert, replace, delete, update

Methods

insert :: forall record (m :: Type -> Type). (MonadIO m, PersistRecordBackend record backend) => record -> ReaderT backend m (Key record) #

Create a new record in the database, returning an automatically created key (in SQL an auto-increment id).

Example usage

Expand

Using schema-1 and dataset-1, let's insert a new user John.

insertJohn :: MonadIO m => ReaderT SqlBackend m (Key User)
insertJohn = insert $ User "John" 30

johnId <- insertJohn

The above query when applied on dataset-1, will produce this:

+-----+------+-----+
|id   |name  |age  |
+-----+------+-----+
|1    |SPJ   |40   |
+-----+------+-----+
|2    |Simon |41   |
+-----+------+-----+
|3    |John  |30   |
+-----+------+-----+

insert_ :: forall record (m :: Type -> Type). (MonadIO m, PersistRecordBackend record backend) => record -> ReaderT backend m () #

Same as insert, but doesn't return a Key.

Example usage

Expand

with schema-1 and dataset-1,

insertJohn :: MonadIO m => ReaderT SqlBackend m (Key User)
insertJohn = insert_ $ User "John" 30

The above query when applied on dataset-1, will produce this:

+-----+------+-----+
|id   |name  |age  |
+-----+------+-----+
|1    |SPJ   |40   |
+-----+------+-----+
|2    |Simon |41   |
+-----+------+-----+
|3    |John  |30   |
+-----+------+-----+

insertMany :: forall record (m :: Type -> Type). (MonadIO m, PersistRecordBackend record backend) => [record] -> ReaderT backend m [Key record] #

Create multiple records in the database and return their Keys.

If you don't need the inserted Keys, use insertMany_.

The MongoDB and PostgreSQL backends insert all records and retrieve their keys in one database query.

The SQLite and MySQL backends use the slow, default implementation of mapM insert.

Example usage

Expand

with schema-1 and dataset-1,

insertUsers :: MonadIO m => ReaderT SqlBackend m [Key User]
insertUsers = insertMany [User "John" 30, User "Nick" 32, User "Jane" 20]

userIds <- insertUsers

The above query when applied on dataset-1, will produce this:

+-----+------+-----+
|id   |name  |age  |
+-----+------+-----+
|1    |SPJ   |40   |
+-----+------+-----+
|2    |Simon |41   |
+-----+------+-----+
|3    |John  |30   |
+-----+------+-----+
|4    |Nick  |32   |
+-----+------+-----+
|5    |Jane  |20   |
+-----+------+-----+

insertMany_ :: forall record (m :: Type -> Type). (MonadIO m, PersistRecordBackend record backend) => [record] -> ReaderT backend m () #

Same as insertMany, but doesn't return any Keys.

The MongoDB, PostgreSQL, SQLite and MySQL backends insert all records in one database query.

Example usage

Expand

With schema-1 and dataset-1,

insertUsers_ :: MonadIO m => ReaderT SqlBackend m ()
insertUsers_ = insertMany_ [User "John" 30, User "Nick" 32, User "Jane" 20]

The above query when applied on dataset-1, will produce this:

+-----+------+-----+
|id   |name  |age  |
+-----+------+-----+
|1    |SPJ   |40   |
+-----+------+-----+
|2    |Simon |41   |
+-----+------+-----+
|3    |John  |30   |
+-----+------+-----+
|4    |Nick  |32   |
+-----+------+-----+
|5    |Jane  |20   |
+-----+------+-----+

insertEntityMany :: forall record (m :: Type -> Type). (MonadIO m, PersistRecordBackend record backend) => [Entity record] -> ReaderT backend m () #

Same as insertMany_, but takes an Entity instead of just a record.

Useful when migrating data from one entity to another and want to preserve ids.

The MongoDB, PostgreSQL, SQLite and MySQL backends insert all records in one database query.

Example usage

Expand

With schema-1 and dataset-1,

insertUserEntityMany :: MonadIO m => ReaderT SqlBackend m ()
insertUserEntityMany = insertEntityMany [SnakeEntity, EvaEntity]

The above query when applied on dataset-1, will produce this:

+-----+------+-----+
|id   |name  |age  |
+-----+------+-----+
|1    |SPJ   |40   |
+-----+------+-----+
|2    |Simon |41   |
+-----+------+-----+
|3    |Snake |38   |
+-----+------+-----+
|4    |Eva   |38   |
+-----+------+-----+

insertKey :: forall record (m :: Type -> Type). (MonadIO m, PersistRecordBackend record backend) => Key record -> record -> ReaderT backend m () #

Create a new record in the database using the given key.

Example usage

Expand

With schema-1 and dataset-1,

insertAliceKey :: MonadIO m => Key User -> ReaderT SqlBackend m ()
insertAliceKey key = insertKey key $ User "Alice" 20

insertAliceKey $ UserKey {unUserKey = SqlBackendKey {unSqlBackendKey = 3}}

The above query when applied on dataset-1, will produce this:

+-----+------+-----+
|id   |name  |age  |
+-----+------+-----+
|1    |SPJ   |40   |
+-----+------+-----+
|2    |Simon |41   |
+-----+------+-----+
|3    |Alice |20   |
+-----+------+-----+

repsert :: forall record (m :: Type -> Type). (MonadIO m, PersistRecordBackend record backend) => Key record -> record -> ReaderT backend m () #

Put the record in the database with the given key. Unlike replace, if a record with the given key does not exist then a new record will be inserted.

Example usage

Expand

We try to explain upsertBy using schema-1 and dataset-1.

First, we insert Philip to dataset-1.

insertPhilip :: MonadIO m => ReaderT SqlBackend m (Key User)
insertPhilip = insert $ User "Philip" 42

philipId <- insertPhilip

This query will produce:

+-----+------+-----+
|id   |name  |age  |
+-----+------+-----+
|1    |SPJ   |40   |
+-----+------+-----+
|2    |Simon |41   |
+-----+------+-----+
|3    |Philip|42   |
+-----+------+-----+

repsertHaskell :: MonadIO m => Key record -> ReaderT SqlBackend m ()
repsertHaskell id = repsert id $ User "Haskell" 81

repsertHaskell philipId

This query will replace Philip's record with Haskell's one:

+-----+-----------------+--------+
|id   |name             |age     |
+-----+-----------------+--------+
|1    |SPJ              |40      |
+-----+-----------------+--------+
|2    |Simon            |41      |
+-----+-----------------+--------+
|3    |Philip -> Haskell|42 -> 81|
+-----+-----------------+--------+

repsert inserts the given record if the key doesn't exist.

repsertXToUnknown :: MonadIO m => ReaderT SqlBackend m ()
repsertXToUnknown = repsert unknownId $ User "X" 999

For example, applying the above query to dataset-1 will produce this:

+-----+------+-----+
|id   |name  |age  |
+-----+------+-----+
|1    |SPJ   |40   |
+-----+------+-----+
|2    |Simon |41   |
+-----+------+-----+
|3    |X     |999  |
+-----+------+-----+

repsertMany :: forall record (m :: Type -> Type). (MonadIO m, PersistRecordBackend record backend) => [(Key record, record)] -> ReaderT backend m () #

Put many entities into the database.

Batch version of repsert for SQL backends.

Useful when migrating data from one entity to another and want to preserve ids.

Example usage

Expand

With schema-1 and dataset-1,

repsertManyUsers :: MonadIO m =>ReaderT SqlBackend m ()
repsertManyusers = repsertMany [(simonId, User "Philip" 20), (unknownId999, User "Mr. X" 999)]

The above query when applied on dataset-1, will produce this:

+-----+----------------+---------+
|id   |name            |age      |
+-----+----------------+---------+
|1    |SPJ             |40       |
+-----+----------------+---------+
|2    |Simon -> Philip |41 -> 20 |
+-----+----------------+---------+
|999  |Mr. X           |999      |
+-----+----------------+---------+

Since: persistent-2.8.1

replace :: forall record (m :: Type -> Type). (MonadIO m, PersistRecordBackend record backend) => Key record -> record -> ReaderT backend m () #

Replace the record in the database with the given key. Note that the result is undefined if such record does not exist, so you must use insertKey or repsert in these cases.

Example usage

Expand

With schema-1 schama-1 and dataset-1,

replaceSpj :: MonadIO m => User -> ReaderT SqlBackend m ()
replaceSpj record = replace spjId record

The above query when applied on dataset-1, will produce this:

+-----+------+-----+
|id   |name  |age  |
+-----+------+-----+
|1    |Mike  |45   |
+-----+------+-----+
|2    |Simon |41   |
+-----+------+-----+

delete :: forall record (m :: Type -> Type). (MonadIO m, PersistRecordBackend record backend) => Key record -> ReaderT backend m () #

Delete a specific record by identifier. Does nothing if record does not exist.

Example usage

Expand

With schema-1 and dataset-1,

deleteSpj :: MonadIO m => ReaderT SqlBackend m ()
deleteSpj = delete spjId

The above query when applied on dataset-1, will produce this:

+-----+------+-----+
|id   |name  |age  |
+-----+------+-----+
|2    |Simon |41   |
+-----+------+-----+

update :: forall record (m :: Type -> Type). (MonadIO m, PersistRecordBackend record backend) => Key record -> [Update record] -> ReaderT backend m () #

Update individual fields on a specific record.

Example usage

Expand

With schema-1 and dataset-1,

updateSpj :: MonadIO m => [Update User] -> ReaderT SqlBackend m ()
updateSpj updates = update spjId updates

updateSpj [UserAge +=. 100]

The above query when applied on dataset-1, will produce this:

+-----+------+-----+
|id   |name  |age  |
+-----+------+-----+
|1    |SPJ   |140  |
+-----+------+-----+
|2    |Simon |41   |
+-----+------+-----+

updateGet :: forall record (m :: Type -> Type). (MonadIO m, PersistRecordBackend record backend) => Key record -> [Update record] -> ReaderT backend m record #

Update individual fields on a specific record, and retrieve the updated value from the database.

Note that this function will throw an exception if the given key is not found in the database.

Example usage

Expand

With schema-1 and dataset-1,

updateGetSpj :: MonadIO m => [Update User] -> ReaderT SqlBackend m User
updateGetSpj updates = updateGet spjId updates

spj <- updateGetSpj [UserAge +=. 100]

The above query when applied on dataset-1, will produce this:

+-----+------+-----+
|id   |name  |age  |
+-----+------+-----+
|1    |SPJ   |140  |
+-----+------+-----+
|2    |Simon |41   |
+-----+------+-----+

fromPersistValueJSON :: FromJSON a => PersistValue -> Either Text a #

Convenience function for getting a free PersistField instance from a type with JSON instances. The JSON parser used will accept JSON values other that object and arrays. So, if your instance serializes the data to a JSON string, this will still work.

Example usage in combination with toPersistValueJSON:

instance PersistField MyData where
  fromPersistValue = fromPersistValueJSON
  toPersistValue = toPersistValueJSON

toPersistValueJSON :: ToJSON a => a -> PersistValue #

Convenience function for getting a free PersistField instance from a type with JSON instances.

Example usage in combination with fromPersistValueJSON:

instance PersistField MyData where
  fromPersistValue = fromPersistValueJSON
  toPersistValue = toPersistValueJSON

entityIdFromJSON :: (PersistEntity record, FromJSON record) => Value -> Parser (Entity record) #

Predefined parseJSON. The input JSON looks like {"id": 1, "name": ...}.

The typical usage is:

instance FromJSON (Entity User) where
    parseJSON = entityIdFromJSON

entityIdToJSON :: (PersistEntity record, ToJSON record) => Entity record -> Value #

Predefined toJSON. The resulting JSON looks like {"id": 1, "name": ...}.

The typical usage is:

instance ToJSON (Entity User) where
    toJSON = entityIdToJSON

keyValueEntityFromJSON :: (PersistEntity record, FromJSON record) => Value -> Parser (Entity record) #

Predefined parseJSON. The input JSON looks like {"key": 1, "value": {"name": ...}}.

The typical usage is:

instance FromJSON (Entity User) where
    parseJSON = keyValueEntityFromJSON

keyValueEntityToJSON :: (PersistEntity record, ToJSON record) => Entity record -> Value #

Predefined toJSON. The resulting JSON looks like {"key": 1, "value": {"name": ...}}.

The typical usage is:

instance ToJSON (Entity User) where
    toJSON = keyValueEntityToJSON

entityValues :: PersistEntity record => Entity record -> [PersistValue] #

Get list of values corresponding to given entity.

data family Unique record #

Unique keys besides the Key.

data family EntityField record :: Type -> Type #

An EntityField is parameterised by the Haskell record it belongs to and the additional type of that field.

As of persistent-2.11.0.0, it's possible to use the OverloadedLabels language extension to refer to EntityField values polymorphically. See the documentation on SymbolToField for more information.

Instances

Instances details

SymbolToField sym rec typ => IsLabel sym (EntityField rec typ)

This instance delegates to SymbolToField to provide OverloadedLabels support to the EntityField type.

Since: persistent-2.11.0.0

Instance details

Defined in Database.Persist.Class.PersistEntity

Methods

fromLabel :: EntityField rec typ #

data family Key record #

By default, a backend will automatically generate the key Instead you can specify a Primary key made up of unique values.

type family PersistEntityBackend record #

Persistent allows multiple different backends (databases).

class (PersistField (Key record), ToJSON (Key record), FromJSON (Key record), Show (Key record), Read (Key record), Eq (Key record), Ord (Key record)) => PersistEntity record where #

Persistent serialized Haskell records to the database. A Database Entity (A row in SQL, a document in MongoDB, etc) corresponds to a Key plus a Haskell record.

For every Haskell record type stored in the database there is a corresponding PersistEntity instance. An instance of PersistEntity contains meta-data for the record. PersistEntity also helps abstract over different record types. That way the same query interface can return a PersistEntity, with each query returning different types of Haskell records.

Some advanced type system capabilities are used to make this process type-safe. Persistent users usually don't need to understand the class associated data and functions.

Minimal complete definition

keyToValues, keyFromValues, persistIdField, entityDef, persistFieldDef, toPersistFields, fromPersistValues, persistUniqueKeys, persistUniqueToFieldNames, persistUniqueToValues, fieldLens

Associated Types

type PersistEntityBackend record #

Persistent allows multiple different backends (databases).

data Key record #

By default, a backend will automatically generate the key Instead you can specify a Primary key made up of unique values.

data EntityField record :: Type -> Type #

An EntityField is parameterised by the Haskell record it belongs to and the additional type of that field.

As of persistent-2.11.0.0, it's possible to use the OverloadedLabels language extension to refer to EntityField values polymorphically. See the documentation on SymbolToField for more information.

data Unique record #

Unique keys besides the Key.

Methods

keyToValues :: Key record -> [PersistValue] #

A lower-level key operation.

keyFromValues :: [PersistValue] -> Either Text (Key record) #

A lower-level key operation.

persistIdField :: EntityField record (Key record) #

A meta-operation to retrieve the Key EntityField.

entityDef :: proxy record -> EntityDef #

Retrieve the EntityDef meta-data for the record.

persistFieldDef :: EntityField record typ -> FieldDef #

Return meta-data for a given EntityField.

toPersistFields :: record -> [SomePersistField] #

A meta-operation to get the database fields of a record.

fromPersistValues :: [PersistValue] -> Either Text record #

A lower-level operation to convert from database values to a Haskell record.

persistUniqueKeys :: record -> [Unique record] #

A meta operation to retrieve all the Unique keys.

persistUniqueToFieldNames :: Unique record -> NonEmpty (FieldNameHS, FieldNameDB) #

A lower level operation.

persistUniqueToValues :: Unique record -> [PersistValue] #

A lower level operation.

fieldLens :: EntityField record field -> forall (f :: Type -> Type). Functor f => (field -> f field) -> Entity record -> f (Entity record) #

Use a PersistField as a lens.

keyFromRecordM :: Maybe (record -> Key record) #

Extract a Key record from a record value. Currently, this is only defined for entities using the Primary syntax for natural/composite keys. In a future version of persistent which incorporates the ID directly into the entity, this will always be Just.

Since: persistent-2.11.0.0

type family BackendSpecificUpdate backend record #

data Update record #

Updating a database entity.

Persistent users use combinators to create these.

Constructors

PersistField typ => Update
Fields updateField :: EntityField record typ updateValue :: typ updateUpdate :: PersistUpdate
BackendUpdate (BackendSpecificUpdate (PersistEntityBackend record) record)

data SelectOpt record #

Query options.

Persistent users use these directly.

Constructors

Asc (EntityField record typ)
Desc (EntityField record typ)
OffsetBy Int
LimitTo Int

type family BackendSpecificFilter backend record #

data Filter record #

Filters which are available for select, updateWhere and deleteWhere. Each filter constructor specifies the field being filtered on, the type of comparison applied (equals, not equals, etc) and the argument for the comparison.

Persistent users use combinators to create these.

Note that it's important to be careful about the PersistFilter that you are using, if you use this directly. For example, using the In PersistFilter requires that you have an array- or list-shaped EntityField. It is possible to construct values using this that will create malformed runtime values.

Constructors

PersistField typ => Filter
Fields filterField :: EntityField record typ filterValue :: FilterValue typ filterFilter :: PersistFilter
FilterAnd [Filter record]	convenient for internal use, not needed for the API
FilterOr [Filter record]
BackendFilter (BackendSpecificFilter (PersistEntityBackend record) record)

data FilterValue typ where #

Value to filter with. Highly dependant on the type of filter used.

Since: persistent-2.10.0

Constructors

FilterValue :: forall typ. typ -> FilterValue typ
FilterValues :: forall typ. [typ] -> FilterValue typ
UnsafeValue :: forall a typ. PersistField a => a -> FilterValue typ

data Entity record #

Datatype that represents an entity, with both its Key and its Haskell record representation.

When using a SQL-based backend (such as SQLite or PostgreSQL), an Entity may take any number of columns depending on how many fields it has. In order to reconstruct your entity on the Haskell side, persistent needs all of your entity columns and in the right order. Note that you don't need to worry about this when using persistent's API since everything is handled correctly behind the scenes.

However, if you want to issue a raw SQL command that returns an Entity, then you have to be careful with the column order. While you could use SELECT Entity.* WHERE ... and that would work most of the time, there are times when the order of the columns on your database is different from the order that persistent expects (for example, if you add a new field in the middle of you entity definition and then use the migration code -- persistent will expect the column to be in the middle, but your DBMS will put it as the last column). So, instead of using a query like the one above, you may use rawSql (from the Database.Persist.GenericSql module) with its /entity selection placeholder/ (a double question mark ??). Using rawSql the query above must be written as SELECT ?? WHERE ... Then rawSql will replace ?? with the list of all columns that we need from your entity in the right order. If your query returns two entities (i.e. (Entity backend a, Entity backend b)), then you must you use SELECT ??, ?? WHERE ..., and so on.

Constructors

Entity
Fields entityKey :: Key record entityVal :: record

Instances

Instances details

(Eq (Key record), Eq record) => Eq (Entity record)
Instance details Defined in Database.Persist.Class.PersistEntity Methods (==) :: Entity record -> Entity record -> Bool # (/=) :: Entity record -> Entity record -> Bool #
(Ord (Key record), Ord record) => Ord (Entity record)
Instance details Defined in Database.Persist.Class.PersistEntity Methods compare :: Entity record -> Entity record -> Ordering # (<) :: Entity record -> Entity record -> Bool # (<=) :: Entity record -> Entity record -> Bool # (>) :: Entity record -> Entity record -> Bool # (>=) :: Entity record -> Entity record -> Bool # max :: Entity record -> Entity record -> Entity record # min :: Entity record -> Entity record -> Entity record #
(Read (Key record), Read record) => Read (Entity record)
Instance details Defined in Database.Persist.Class.PersistEntity Methods readsPrec :: Int -> ReadS (Entity record) # readList :: ReadS [Entity record] # readPrec :: ReadPrec (Entity record) # readListPrec :: ReadPrec [Entity record] #
(Show (Key record), Show record) => Show (Entity record)
Instance details Defined in Database.Persist.Class.PersistEntity Methods showsPrec :: Int -> Entity record -> ShowS # show :: Entity record -> String # showList :: [Entity record] -> ShowS #
(Generic (Key record), Generic record) => Generic (Entity record)
Instance details Defined in Database.Persist.Class.PersistEntity Associated Types type Rep (Entity record) :: Type -> Type # Methods from :: Entity record -> Rep (Entity record) x # to :: Rep (Entity record) x -> Entity record #
(PersistEntity record, PersistField record, PersistField (Key record)) => PersistField (Entity record)
Instance details Defined in Database.Persist.Class.PersistEntity Methods toPersistValue :: Entity record -> PersistValue # fromPersistValue :: PersistValue -> Either Text (Entity record) #
type Rep (Entity record)
Instance details Defined in Database.Persist.Class.PersistEntity type Rep (Entity record) = D1 ('MetaData "Entity" "Database.Persist.Class.PersistEntity" "persistent-2.13.2.1-LDF7mxBTcAzIVuQQYVnMhe" 'False) (C1 ('MetaCons "Entity" 'PrefixI 'True) (S1 ('MetaSel ('Just "entityKey") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 (Key record)) :*: S1 ('MetaSel ('Just "entityVal") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 record)))

class SymbolToField (sym :: Symbol) rec typ | sym rec -> typ where #

This type class is used with the OverloadedLabels extension to provide a more convenient means of using the EntityField type. EntityField definitions are prefixed with the type name to avoid ambiguity, but this ambiguity can result in verbose code.

If you have a table User with a name Text field, then the corresponding EntityField is UserName. With this, we can write #name :: EntityField User Text.

What's more fun is that the type is more general: it's actually #name :: (SymbolToField "name" rec typ) => EntityField rec typ

Which means it is *polymorphic* over the actual record. This allows you to write code that can be generic over the tables, provided they have the right fields.

Since: persistent-2.11.0.0

Methods

symbolToField :: EntityField rec typ #

getPersistMap :: PersistValue -> Either Text [(Text, PersistValue)] #

FIXME Add documentation to that.

class PersistField a where #

This class teaches Persistent how to take a custom type and marshal it to and from a PersistValue, allowing it to be stored in a database.

Examples

Expand

Simple Newtype

You can use newtype to add more type safety/readability to a basis type like ByteString. In these cases, just derive PersistField and PersistFieldSql:

{-# LANGUAGE GeneralizedNewtypeDeriving #-}

newtype HashedPassword = HashedPassword ByteString
  deriving (Eq, Show, PersistField, PersistFieldSql)

Smart Constructor Newtype

In this example, we create a PersistField instance for a newtype following the "Smart Constructor" pattern.

{-# LANGUAGE GeneralizedNewtypeDeriving #-}
import qualified Data.Text as T
import qualified Data.Char as C

-- | An American Social Security Number
newtype SSN = SSN Text
 deriving (Eq, Show, PersistFieldSql)

mkSSN :: Text -> Either Text SSN
mkSSN t = if (T.length t == 9) && (T.all C.isDigit t)
 then Right $ SSN t
 else Left $ "Invalid SSN: " <> t

instance PersistField SSN where
  toPersistValue (SSN t) = PersistText t
  fromPersistValue (PersistText t) = mkSSN t
  -- Handle cases where the database does not give us PersistText
  fromPersistValue x = Left $ "File.hs: When trying to deserialize an SSN: expected PersistText, received: " <> T.pack (show x)

Tips:

This file contain dozens of PersistField instances you can look at for examples.
Typically custom PersistField instances will only accept a single PersistValue constructor in fromPersistValue.
Internal PersistField instances accept a wide variety of PersistValues to accomodate e.g. storing booleans as integers, booleans or strings.
If you're making a custom instance and using a SQL database, you'll also need PersistFieldSql to specify the type of the database column.

Methods

toPersistValue :: a -> PersistValue #

fromPersistValue :: PersistValue -> Either Text a #

Instances

Instances details

PersistField Bool
Instance details Defined in Database.Persist.Class.PersistField Methods toPersistValue :: Bool -> PersistValue # fromPersistValue :: PersistValue -> Either Text Bool #
PersistField Double
Instance details Defined in Database.Persist.Class.PersistField Methods toPersistValue :: Double -> PersistValue # fromPersistValue :: PersistValue -> Either Text Double #
PersistField Int
Instance details Defined in Database.Persist.Class.PersistField Methods toPersistValue :: Int -> PersistValue # fromPersistValue :: PersistValue -> Either Text Int #
PersistField Int8
Instance details Defined in Database.Persist.Class.PersistField Methods toPersistValue :: Int8 -> PersistValue # fromPersistValue :: PersistValue -> Either Text Int8 #
PersistField Int16
Instance details Defined in Database.Persist.Class.PersistField Methods toPersistValue :: Int16 -> PersistValue # fromPersistValue :: PersistValue -> Either Text Int16 #
PersistField Int32
Instance details Defined in Database.Persist.Class.PersistField Methods toPersistValue :: Int32 -> PersistValue # fromPersistValue :: PersistValue -> Either Text Int32 #
PersistField Int64
Instance details Defined in Database.Persist.Class.PersistField Methods toPersistValue :: Int64 -> PersistValue # fromPersistValue :: PersistValue -> Either Text Int64 #
(TypeError ((((('Text "The instance of PersistField for the Natural type was removed." :$$: 'Text "Please see the documentation for OverflowNatural if you want to ") :$$: 'Text "continue using the old behavior or want to see documentation on ") :$$: 'Text "why the instance was removed.") :$$: 'Text "") :$$: 'Text "This error instance will be removed in a future release.") :: Constraint) => PersistField Natural
Instance details Defined in Database.Persist.Class.PersistField Methods toPersistValue :: Natural -> PersistValue # fromPersistValue :: PersistValue -> Either Text Natural #
PersistField Rational
Instance details Defined in Database.Persist.Class.PersistField Methods toPersistValue :: Rational -> PersistValue # fromPersistValue :: PersistValue -> Either Text Rational #
PersistField Word
Instance details Defined in Database.Persist.Class.PersistField Methods toPersistValue :: Word -> PersistValue # fromPersistValue :: PersistValue -> Either Text Word #
PersistField Word8
Instance details Defined in Database.Persist.Class.PersistField Methods toPersistValue :: Word8 -> PersistValue # fromPersistValue :: PersistValue -> Either Text Word8 #
PersistField Word16
Instance details Defined in Database.Persist.Class.PersistField Methods toPersistValue :: Word16 -> PersistValue # fromPersistValue :: PersistValue -> Either Text Word16 #
PersistField Word32
Instance details Defined in Database.Persist.Class.PersistField Methods toPersistValue :: Word32 -> PersistValue # fromPersistValue :: PersistValue -> Either Text Word32 #
PersistField Word64
Instance details Defined in Database.Persist.Class.PersistField Methods toPersistValue :: Word64 -> PersistValue # fromPersistValue :: PersistValue -> Either Text Word64 #
PersistField ByteString
Instance details Defined in Database.Persist.Class.PersistField Methods toPersistValue :: ByteString -> PersistValue # fromPersistValue :: PersistValue -> Either Text ByteString #
PersistField Text
Instance details Defined in Database.Persist.Class.PersistField Methods toPersistValue :: Text -> PersistValue # fromPersistValue :: PersistValue -> Either Text Text #
PersistField UTCTime
Instance details Defined in Database.Persist.Class.PersistField Methods toPersistValue :: UTCTime -> PersistValue # fromPersistValue :: PersistValue -> Either Text UTCTime #
PersistField Text
Instance details Defined in Database.Persist.Class.PersistField Methods toPersistValue :: Text -> PersistValue # fromPersistValue :: PersistValue -> Either Text0 Text #
PersistField Html
Instance details Defined in Database.Persist.Class.PersistField Methods toPersistValue :: Html -> PersistValue # fromPersistValue :: PersistValue -> Either Text Html #
PersistField OverflowNatural
Instance details Defined in Database.Persist.Class.PersistField Methods toPersistValue :: OverflowNatural -> PersistValue # fromPersistValue :: PersistValue -> Either Text OverflowNatural #
PersistField SomePersistField
Instance details Defined in Database.Persist.Class.PersistField Methods toPersistValue :: SomePersistField -> PersistValue # fromPersistValue :: PersistValue -> Either Text SomePersistField #
PersistField Checkmark
Instance details Defined in Database.Persist.Class.PersistField Methods toPersistValue :: Checkmark -> PersistValue # fromPersistValue :: PersistValue -> Either Text Checkmark #
PersistField PersistValue
Instance details Defined in Database.Persist.Class.PersistField Methods toPersistValue :: PersistValue -> PersistValue # fromPersistValue :: PersistValue -> Either Text PersistValue #
PersistField TimeOfDay
Instance details Defined in Database.Persist.Class.PersistField Methods toPersistValue :: TimeOfDay -> PersistValue # fromPersistValue :: PersistValue -> Either Text TimeOfDay #
PersistField Day
Instance details Defined in Database.Persist.Class.PersistField Methods toPersistValue :: Day -> PersistValue # fromPersistValue :: PersistValue -> Either Text Day #
PersistField Textarea
Instance details Defined in Yesod.Form.Fields Methods toPersistValue :: Textarea -> PersistValue # fromPersistValue :: PersistValue -> Either Text Textarea #
PersistField [Char]
Instance details Defined in Database.Persist.Class.PersistField Methods toPersistValue :: [Char] -> PersistValue # fromPersistValue :: PersistValue -> Either Text [Char] #
PersistField a => PersistField [a]
Instance details Defined in Database.Persist.Class.PersistField Methods toPersistValue :: [a] -> PersistValue # fromPersistValue :: PersistValue -> Either Text [a] #
PersistField a => PersistField (Maybe a)
Instance details Defined in Database.Persist.Class.PersistField Methods toPersistValue :: Maybe a -> PersistValue # fromPersistValue :: PersistValue -> Either Text (Maybe a) #
PersistField v => PersistField (IntMap v)
Instance details Defined in Database.Persist.Class.PersistField Methods toPersistValue :: IntMap v -> PersistValue # fromPersistValue :: PersistValue -> Either Text (IntMap v) #
(Ord a, PersistField a) => PersistField (Set a)
Instance details Defined in Database.Persist.Class.PersistField Methods toPersistValue :: Set a -> PersistValue # fromPersistValue :: PersistValue -> Either Text (Set a) #
(PersistEntity record, PersistField record, PersistField (Key record)) => PersistField (Entity record)
Instance details Defined in Database.Persist.Class.PersistEntity Methods toPersistValue :: Entity record -> PersistValue # fromPersistValue :: PersistValue -> Either Text (Entity record) #
PersistField a => PersistField (Vector a)
Instance details Defined in Database.Persist.Class.PersistField Methods toPersistValue :: Vector a -> PersistValue # fromPersistValue :: PersistValue -> Either Text (Vector a) #
(PersistField a, PersistField b) => PersistField (a, b)
Instance details Defined in Database.Persist.Class.PersistField Methods toPersistValue :: (a, b) -> PersistValue # fromPersistValue :: PersistValue -> Either Text (a, b) #
PersistField v => PersistField (Map Text v)
Instance details Defined in Database.Persist.Class.PersistField Methods toPersistValue :: Map Text v -> PersistValue # fromPersistValue :: PersistValue -> Either Text (Map Text v) #
HasResolution a => PersistField (Fixed a)
Instance details Defined in Database.Persist.Class.PersistField Methods toPersistValue :: Fixed a -> PersistValue # fromPersistValue :: PersistValue -> Either Text (Fixed a) #

newtype OverflowNatural #

Prior to persistent-2.11.0, we provided an instance of PersistField for the Natural type. This was in error, because Natural represents an infinite value, and databases don't have reasonable types for this.

The instance for Natural used the Int64 underlying type, which will cause underflow and overflow errors. This type has the exact same code in the instances, and will work seamlessly.

A more appropriate type for this is the Word series of types from Data.Word. These have a bounded size, are guaranteed to be non-negative, and are quite efficient for the database to store.

Since: persistent-2.11.0

Constructors

OverflowNatural
Fields unOverflowNatural :: Natural

Instances

Instances details

Eq OverflowNatural
Instance details Defined in Database.Persist.Class.PersistField Methods (==) :: OverflowNatural -> OverflowNatural -> Bool # (/=) :: OverflowNatural -> OverflowNatural -> Bool #
Num OverflowNatural
Instance details Defined in Database.Persist.Class.PersistField Methods (+) :: OverflowNatural -> OverflowNatural -> OverflowNatural # (-) :: OverflowNatural -> OverflowNatural -> OverflowNatural # (*) :: OverflowNatural -> OverflowNatural -> OverflowNatural # negate :: OverflowNatural -> OverflowNatural # abs :: OverflowNatural -> OverflowNatural # signum :: OverflowNatural -> OverflowNatural # fromInteger :: Integer -> OverflowNatural #
Ord OverflowNatural
Instance details Defined in Database.Persist.Class.PersistField Methods compare :: OverflowNatural -> OverflowNatural -> Ordering # (<) :: OverflowNatural -> OverflowNatural -> Bool # (<=) :: OverflowNatural -> OverflowNatural -> Bool # (>) :: OverflowNatural -> OverflowNatural -> Bool # (>=) :: OverflowNatural -> OverflowNatural -> Bool # max :: OverflowNatural -> OverflowNatural -> OverflowNatural # min :: OverflowNatural -> OverflowNatural -> OverflowNatural #
Show OverflowNatural
Instance details Defined in Database.Persist.Class.PersistField Methods showsPrec :: Int -> OverflowNatural -> ShowS # show :: OverflowNatural -> String # showList :: [OverflowNatural] -> ShowS #
PersistField OverflowNatural
Instance details Defined in Database.Persist.Class.PersistField Methods toPersistValue :: OverflowNatural -> PersistValue # fromPersistValue :: PersistValue -> Either Text OverflowNatural #

data SomePersistField #

Constructors

PersistField a => SomePersistField a

Instances

Instances details

PersistField SomePersistField
Instance details Defined in Database.Persist.Class.PersistField Methods toPersistValue :: SomePersistField -> PersistValue # fromPersistValue :: PersistValue -> Either Text SomePersistField #

overEntityFields :: ([FieldDef] -> [FieldDef]) -> EntityDef -> EntityDef #

Perform a mapping function over all of the entity fields, as determined by getEntityFieldsDatabase.

Since: persistent-2.13.0.0

getEntityKeyFields :: EntityDef -> NonEmpty FieldDef #

Since: persistent-2.13.0.0

setEntityIdDef :: EntityIdDef -> EntityDef -> EntityDef #

Since: persistent-2.13.0.0

setEntityId :: FieldDef -> EntityDef -> EntityDef #

Set an entityId to be the given FieldDef.

Since: persistent-2.13.0.0

getEntityIdField :: EntityDef -> Maybe FieldDef #

Since: persistent-2.13.0.0

getEntityId :: EntityDef -> EntityIdDef #

Since: persistent-2.13.0.0

isEntitySum :: EntityDef -> Bool #

Since: persistent-2.13.0.0

getEntityFieldsDatabase :: EntityDef -> [FieldDef] #

This returns all of the FieldDef defined for the EntityDef, including those fields that are marked as MigrationOnly (and therefore only present in the database) or SafeToRemove (and a migration will drop the column if it exists in the database).

For all the fields that are present on the Haskell-type, see getEntityFields.

Since: persistent-2.13.0.0

getEntityFields :: EntityDef -> [FieldDef] #

Retrieve the list of FieldDef that makes up the fields of the entity.

This does not return the fields for an Id column or an implicit id. It will return the key columns if you used the Primary syntax for defining the primary key.

This does not return fields that are marked SafeToRemove or MigrationOnly - so it only returns fields that are represented in the Haskell type. If you need those fields, use getEntityFieldsDatabase.

Since: persistent-2.13.0.0

getEntityForeignDefs :: EntityDef -> [ForeignDef] #

Since: persistent-2.13.0.0

getEntityComments :: EntityDef -> Maybe Text #

setEntityDBName :: EntityNameDB -> EntityDef -> EntityDef #

Since: persistent-2.13.0.0

getEntityExtra :: EntityDef -> Map Text [[Text]] #

getEntityDBName :: EntityDef -> EntityNameDB #

Return the database name for the given entity.

Since: persistent-2.13.0.0

getEntityHaskellName :: EntityDef -> EntityNameHS #

Retrieve the Haskell name of the given entity.

Since: persistent-2.13.0.0

getEntityUniques :: EntityDef -> [UniqueDef] #

Retrieve the list of UniqueDef from an EntityDef. This currently does not include a Primary key, if one is defined. A future version of persistent will include a Primary key among the Unique constructors for the Entity.

Since: persistent-2.13.0.0

isFieldMaybe :: FieldDef -> Bool #

Check if the field is `Maybe a`

Since: persistent-2.13.0.0

isFieldNullable :: FieldDef -> IsNullable #

Check if the field definition is nullable

Since: persistent-2.13.0.0

addFieldAttr :: FieldAttr -> FieldDef -> FieldDef #

Add an attribute to the list of field attributes.

Since: persistent-2.13.0.0

overFieldAttrs :: ([FieldAttr] -> [FieldAttr]) -> FieldDef -> FieldDef #

Modify the list of field attributes.

Since: persistent-2.13.0.0

setFieldAttrs :: [FieldAttr] -> FieldDef -> FieldDef #

Replace the FieldDef FieldAttr with the new list.

Since: persistent-2.13.0.0

renderCascadeAction :: CascadeAction -> Text #

Render a CascadeAction to Text such that it can be used in a SQL command.

Since: persistent-2.11.0

renderFieldCascade :: FieldCascade -> Text #

Renders a FieldCascade value such that it can be used in SQL migrations.

Since: persistent-2.11.0

noCascade :: FieldCascade #

A FieldCascade that does nothing.

Since: persistent-2.11.0

isHaskellField :: FieldDef -> Bool #

Returns True if the FieldDef does not have a MigrationOnly or SafeToRemove flag from the QuasiQuoter.

Since: persistent-2.13.0.0

isFieldNotGenerated :: FieldDef -> Bool #

parseFieldAttrs :: [Text] -> [FieldAttr] #

Parse raw field attributes into structured form. Any unrecognized attributes will be preserved, identically as they are encountered, as FieldAttrOther values.

Since: persistent-2.11.0.0

keyAndEntityFields :: EntityDef -> NonEmpty FieldDef #

Returns a NonEmpty list of FieldDef that correspond with the key columns for an EntityDef.

entityPrimary :: EntityDef -> Maybe CompositeDef #

entitiesPrimary :: EntityDef -> NonEmpty FieldDef #

Return the [FieldDef] for the entity keys.

fieldAttrsContainsNullable :: [FieldAttr] -> IsNullable #

data Checkmark #

A Checkmark should be used as a field type whenever a uniqueness constraint should guarantee that a certain kind of record may appear at most once, but other kinds of records may appear any number of times.

NOTE: You need to mark any Checkmark fields as nullable (see the following example).

For example, suppose there's a Location entity that represents where a user has lived:

Location
    user    UserId
    name    Text
    current Checkmark nullable

    UniqueLocation user current

The UniqueLocation constraint allows any number of Inactive Locations to be current. However, there may be at most one current Location per user (i.e., either zero or one per user).

This data type works because of the way that SQL treats NULLable fields within uniqueness constraints. The SQL standard says that NULL values should be considered different, so we represent Inactive as SQL NULL, thus allowing any number of Inactive records. On the other hand, we represent Active as TRUE, so the uniqueness constraint will disallow more than one Active record.

Note: There may be DBMSs that do not respect the SQL standard's treatment of NULL values on uniqueness constraints, please check if this data type works before relying on it.

The SQL BOOLEAN type is used because it's the smallest data type available. Note that we never use FALSE, just TRUE and NULL. Provides the same behavior Maybe () would if () was a valid PersistField.

Constructors

Active	When used on a uniqueness constraint, there may be at most one `Active` record.
Inactive	When used on a uniqueness constraint, there may be any number of `Inactive` records.

Instances

Instances details

Bounded Checkmark
Instance details Defined in Database.Persist.Types.Base Methods minBound :: Checkmark # maxBound :: Checkmark #
Enum Checkmark
Instance details Defined in Database.Persist.Types.Base Methods succ :: Checkmark -> Checkmark # pred :: Checkmark -> Checkmark # toEnum :: Int -> Checkmark # fromEnum :: Checkmark -> Int # enumFrom :: Checkmark -> [Checkmark] # enumFromThen :: Checkmark -> Checkmark -> [Checkmark] # enumFromTo :: Checkmark -> Checkmark -> [Checkmark] # enumFromThenTo :: Checkmark -> Checkmark -> Checkmark -> [Checkmark] #
Eq Checkmark
Instance details Defined in Database.Persist.Types.Base Methods (==) :: Checkmark -> Checkmark -> Bool # (/=) :: Checkmark -> Checkmark -> Bool #
Ord Checkmark
Instance details Defined in Database.Persist.Types.Base Methods compare :: Checkmark -> Checkmark -> Ordering # (<) :: Checkmark -> Checkmark -> Bool # (<=) :: Checkmark -> Checkmark -> Bool # (>) :: Checkmark -> Checkmark -> Bool # (>=) :: Checkmark -> Checkmark -> Bool # max :: Checkmark -> Checkmark -> Checkmark # min :: Checkmark -> Checkmark -> Checkmark #
Read Checkmark
Instance details Defined in Database.Persist.Types.Base Methods readsPrec :: Int -> ReadS Checkmark # readList :: ReadS [Checkmark] # readPrec :: ReadPrec Checkmark # readListPrec :: ReadPrec [Checkmark] #
Show Checkmark
Instance details Defined in Database.Persist.Types.Base Methods showsPrec :: Int -> Checkmark -> ShowS # show :: Checkmark -> String # showList :: [Checkmark] -> ShowS #
ToHttpApiData Checkmark
Instance details Defined in Database.Persist.Types.Base Methods toUrlPiece :: Checkmark -> Text # toEncodedUrlPiece :: Checkmark -> Builder # toHeader :: Checkmark -> ByteString # toQueryParam :: Checkmark -> Text #
FromHttpApiData Checkmark
Instance details Defined in Database.Persist.Types.Base Methods parseUrlPiece :: Text -> Either Text Checkmark # parseHeader :: ByteString -> Either Text Checkmark # parseQueryParam :: Text -> Either Text Checkmark #
PathPiece Checkmark
Instance details Defined in Database.Persist.Types.Base Methods fromPathPiece :: Text -> Maybe Checkmark # toPathPiece :: Checkmark -> Text #
PersistField Checkmark
Instance details Defined in Database.Persist.Class.PersistField Methods toPersistValue :: Checkmark -> PersistValue # fromPersistValue :: PersistValue -> Either Text Checkmark #

data IsNullable #

Constructors

Nullable !WhyNullable
NotNullable

Instances

Instances details

Eq IsNullable
Instance details Defined in Database.Persist.Types.Base Methods (==) :: IsNullable -> IsNullable -> Bool # (/=) :: IsNullable -> IsNullable -> Bool #
Show IsNullable
Instance details Defined in Database.Persist.Types.Base Methods showsPrec :: Int -> IsNullable -> ShowS # show :: IsNullable -> String # showList :: [IsNullable] -> ShowS #

data WhyNullable #

The reason why a field is nullable is very important. A field that is nullable because of a Maybe tag will have its type changed from A to Maybe A. OTOH, a field that is nullable because of a nullable tag will remain with the same type.

Constructors

ByMaybeAttr
ByNullableAttr

Instances

Instances details

Eq WhyNullable
Instance details Defined in Database.Persist.Types.Base Methods (==) :: WhyNullable -> WhyNullable -> Bool # (/=) :: WhyNullable -> WhyNullable -> Bool #
Show WhyNullable
Instance details Defined in Database.Persist.Types.Base Methods showsPrec :: Int -> WhyNullable -> ShowS # show :: WhyNullable -> String # showList :: [WhyNullable] -> ShowS #

data EntityDef #

An EntityDef represents the information that persistent knows about an Entity. It uses this information to generate the Haskell datatype, the SQL migrations, and other relevant conversions.

Instances

Instances details

Eq EntityDef
Instance details Defined in Database.Persist.Types.Base Methods (==) :: EntityDef -> EntityDef -> Bool # (/=) :: EntityDef -> EntityDef -> Bool #
Ord EntityDef
Instance details Defined in Database.Persist.Types.Base Methods compare :: EntityDef -> EntityDef -> Ordering # (<) :: EntityDef -> EntityDef -> Bool # (<=) :: EntityDef -> EntityDef -> Bool # (>) :: EntityDef -> EntityDef -> Bool # (>=) :: EntityDef -> EntityDef -> Bool # max :: EntityDef -> EntityDef -> EntityDef # min :: EntityDef -> EntityDef -> EntityDef #
Read EntityDef
Instance details Defined in Database.Persist.Types.Base Methods readsPrec :: Int -> ReadS EntityDef # readList :: ReadS [EntityDef] # readPrec :: ReadPrec EntityDef # readListPrec :: ReadPrec [EntityDef] #
Show EntityDef
Instance details Defined in Database.Persist.Types.Base Methods showsPrec :: Int -> EntityDef -> ShowS # show :: EntityDef -> String # showList :: [EntityDef] -> ShowS #
Lift EntityDef
Instance details Defined in Database.Persist.Types.Base Methods lift :: EntityDef -> Q Exp # liftTyped :: EntityDef -> Q (TExp EntityDef) #

data EntityIdDef #

The definition for the entity's primary key ID.

Since: persistent-2.13.0.0

Constructors

EntityIdField !FieldDef

The entity has a single key column, and it is a surrogate key - that is, you can't go from rec -> Key rec.

Since: persistent-2.13.0.0

EntityIdNaturalKey !CompositeDef

The entity has a natural key. This means you can write rec -> Key rec because all the key fields are present on the datatype.

A natural key can have one or more columns.

Since: persistent-2.13.0.0

Instances

Instances details

Eq EntityIdDef
Instance details Defined in Database.Persist.Types.Base Methods (==) :: EntityIdDef -> EntityIdDef -> Bool # (/=) :: EntityIdDef -> EntityIdDef -> Bool #
Ord EntityIdDef
Instance details Defined in Database.Persist.Types.Base Methods compare :: EntityIdDef -> EntityIdDef -> Ordering # (<) :: EntityIdDef -> EntityIdDef -> Bool # (<=) :: EntityIdDef -> EntityIdDef -> Bool # (>) :: EntityIdDef -> EntityIdDef -> Bool # (>=) :: EntityIdDef -> EntityIdDef -> Bool # max :: EntityIdDef -> EntityIdDef -> EntityIdDef # min :: EntityIdDef -> EntityIdDef -> EntityIdDef #
Read EntityIdDef
Instance details Defined in Database.Persist.Types.Base Methods readsPrec :: Int -> ReadS EntityIdDef # readList :: ReadS [EntityIdDef] # readPrec :: ReadPrec EntityIdDef # readListPrec :: ReadPrec [EntityIdDef] #
Show EntityIdDef
Instance details Defined in Database.Persist.Types.Base Methods showsPrec :: Int -> EntityIdDef -> ShowS # show :: EntityIdDef -> String # showList :: [EntityIdDef] -> ShowS #
Lift EntityIdDef
Instance details Defined in Database.Persist.Types.Base Methods lift :: EntityIdDef -> Q Exp # liftTyped :: EntityIdDef -> Q (TExp EntityIdDef) #

type ExtraLine = [Text] #

type Attr = Text #

data FieldAttr #

Attributes that may be attached to fields that can affect migrations and serialization in backend-specific ways.

While we endeavor to, we can't forsee all use cases for all backends, and so FieldAttr is extensible through its constructor FieldAttrOther.

Since: persistent-2.11.0.0

Constructors

FieldAttrMaybe	The `Maybe` keyword goes after the type. This indicates that the column is nullable, and the generated Haskell code will have a `Maybe` type for it. Example: User name Text Maybe
FieldAttrNullable	This indicates that the column is nullable, but should not have a `Maybe` type. For this to work out, you need to ensure that the `PersistField` instance for the type in question can support a `PersistNull` value. data What = NoWhat \| Hello Text instance PersistField What where fromPersistValue PersistNull = pure NoWhat fromPersistValue pv = Hello $ fromPersistValue pv instance PersistFieldSql What where sqlType _ = SqlString User what What nullable
FieldAttrMigrationOnly	This tag means that the column will not be present on the Haskell code, but will not be removed from the database. Useful to deprecate fields in phases. You should set the column to be nullable in the database. Otherwise, inserts won't have values. User oldName Text MigrationOnly newName Text
FieldAttrSafeToRemove	A `SafeToRemove` attribute is not present on the Haskell datatype, and the backend migrations should attempt to drop the column without triggering any unsafe migration warnings. Useful after you've used `MigrationOnly` to remove a column from the database in phases. User oldName Text SafeToRemove newName Text
FieldAttrNoreference	This attribute indicates that we should create a foreign key reference from a column. By default, `persistent` will try and create a foreign key reference for a column if it can determine that the type of the column is a `Key entity` or an `EntityId` and the `Entity`'s name was present in `mkPersist`. This is useful if you want to use the explicit foreign key syntax. Post title Text Comment postId PostId noreference Foreign Post fk_comment_post postId
FieldAttrReference Text	This is set to specify precisely the database table the column refers to. Post title Text Comment postId PostId references="post" You should not need this - `persistent` should be capable of correctly determining the target table's name. If you do need this, please file an issue describing why.
FieldAttrConstraint Text	Specify a name for the constraint on the foreign key reference for this table. Post title Text Comment postId PostId constraint="my_cool_constraint_name"
FieldAttrDefault Text	Specify the default value for a column. User createdAt UTCTime default="NOW()" Note that a `default=` attribute does not mean you can omit the value while inserting.
FieldAttrSqltype Text	Specify a custom SQL type for the column. Generally, you should define a custom datatype with a custom `PersistFieldSql` instance instead of using this. User uuid Text sqltype=UUID
FieldAttrMaxlen Integer	Set a maximum length for a column. Useful for VARCHAR and indexes. User name Text maxlen=200 UniqueName name
FieldAttrSql Text	Specify the database name of the column. User blarghle Int sql="b_l_a_r_g_h_l_e" Useful for performing phased migrations, where one column is renamed to another column over time.
FieldAttrOther Text	A grab bag of random attributes that were unrecognized by the parser.

Instances

Instances details

Eq FieldAttr
Instance details Defined in Database.Persist.Types.Base Methods (==) :: FieldAttr -> FieldAttr -> Bool # (/=) :: FieldAttr -> FieldAttr -> Bool #
Ord FieldAttr
Instance details Defined in Database.Persist.Types.Base Methods compare :: FieldAttr -> FieldAttr -> Ordering # (<) :: FieldAttr -> FieldAttr -> Bool # (<=) :: FieldAttr -> FieldAttr -> Bool # (>) :: FieldAttr -> FieldAttr -> Bool # (>=) :: FieldAttr -> FieldAttr -> Bool # max :: FieldAttr -> FieldAttr -> FieldAttr # min :: FieldAttr -> FieldAttr -> FieldAttr #
Read FieldAttr
Instance details Defined in Database.Persist.Types.Base Methods readsPrec :: Int -> ReadS FieldAttr # readList :: ReadS [FieldAttr] # readPrec :: ReadPrec FieldAttr # readListPrec :: ReadPrec [FieldAttr] #
Show FieldAttr
Instance details Defined in Database.Persist.Types.Base Methods showsPrec :: Int -> FieldAttr -> ShowS # show :: FieldAttr -> String # showList :: [FieldAttr] -> ShowS #
Lift FieldAttr
Instance details Defined in Database.Persist.Types.Base Methods lift :: FieldAttr -> Q Exp # liftTyped :: FieldAttr -> Q (TExp FieldAttr) #

data FieldType #

A FieldType describes a field parsed from the QuasiQuoter and is used to determine the Haskell type in the generated code.

name Text parses into FTTypeCon Nothing Text

name T.Text parses into FTTypeCon (Just T Text)

name (Jsonb User) parses into:

FTApp (FTTypeCon Nothing Jsonb) (FTTypeCon Nothing User)

Constructors

FTTypeCon (Maybe Text) Text	Optional module and name.
FTTypePromoted Text
FTApp FieldType FieldType
FTList FieldType

Instances

Instances details

Eq FieldType
Instance details Defined in Database.Persist.Types.Base Methods (==) :: FieldType -> FieldType -> Bool # (/=) :: FieldType -> FieldType -> Bool #
Ord FieldType
Instance details Defined in Database.Persist.Types.Base Methods compare :: FieldType -> FieldType -> Ordering # (<) :: FieldType -> FieldType -> Bool # (<=) :: FieldType -> FieldType -> Bool # (>) :: FieldType -> FieldType -> Bool # (>=) :: FieldType -> FieldType -> Bool # max :: FieldType -> FieldType -> FieldType # min :: FieldType -> FieldType -> FieldType #
Read FieldType
Instance details Defined in Database.Persist.Types.Base Methods readsPrec :: Int -> ReadS FieldType # readList :: ReadS [FieldType] # readPrec :: ReadPrec FieldType # readListPrec :: ReadPrec [FieldType] #
Show FieldType
Instance details Defined in Database.Persist.Types.Base Methods showsPrec :: Int -> FieldType -> ShowS # show :: FieldType -> String # showList :: [FieldType] -> ShowS #
Lift FieldType
Instance details Defined in Database.Persist.Types.Base Methods lift :: FieldType -> Q Exp # liftTyped :: FieldType -> Q (TExp FieldType) #

data ReferenceDef #

There are 3 kinds of references 1) composite (to fields that exist in the record) 2) single field 3) embedded

Constructors

NoReference
ForeignRef !EntityNameHS	A ForeignRef has a late binding to the EntityDef it references via name and has the Haskell type of the foreign key in the form of FieldType
EmbedRef EntityNameHS
CompositeRef CompositeDef
SelfReference	A SelfReference stops an immediate cycle which causes non-termination at compile-time (issue #311).

Instances

Instances details

Eq ReferenceDef
Instance details Defined in Database.Persist.Types.Base Methods (==) :: ReferenceDef -> ReferenceDef -> Bool # (/=) :: ReferenceDef -> ReferenceDef -> Bool #
Ord ReferenceDef
Instance details Defined in Database.Persist.Types.Base Methods compare :: ReferenceDef -> ReferenceDef -> Ordering # (<) :: ReferenceDef -> ReferenceDef -> Bool # (<=) :: ReferenceDef -> ReferenceDef -> Bool # (>) :: ReferenceDef -> ReferenceDef -> Bool # (>=) :: ReferenceDef -> ReferenceDef -> Bool # max :: ReferenceDef -> ReferenceDef -> ReferenceDef # min :: ReferenceDef -> ReferenceDef -> ReferenceDef #
Read ReferenceDef
Instance details Defined in Database.Persist.Types.Base Methods readsPrec :: Int -> ReadS ReferenceDef # readList :: ReadS [ReferenceDef] # readPrec :: ReadPrec ReferenceDef # readListPrec :: ReadPrec [ReferenceDef] #
Show ReferenceDef
Instance details Defined in Database.Persist.Types.Base Methods showsPrec :: Int -> ReferenceDef -> ShowS # show :: ReferenceDef -> String # showList :: [ReferenceDef] -> ShowS #
Lift ReferenceDef
Instance details Defined in Database.Persist.Types.Base Methods lift :: ReferenceDef -> Q Exp # liftTyped :: ReferenceDef -> Q (TExp ReferenceDef) #

data EmbedEntityDef #

An EmbedEntityDef is the same as an EntityDef But it is only used for fieldReference so it only has data needed for embedding

Constructors

EmbedEntityDef
Fields embeddedHaskell :: EntityNameHS embeddedFields :: [EmbedFieldDef]

Instances

Instances details

Eq EmbedEntityDef
Instance details Defined in Database.Persist.Types.Base Methods (==) :: EmbedEntityDef -> EmbedEntityDef -> Bool # (/=) :: EmbedEntityDef -> EmbedEntityDef -> Bool #
Ord EmbedEntityDef
Instance details Defined in Database.Persist.Types.Base Methods compare :: EmbedEntityDef -> EmbedEntityDef -> Ordering # (<) :: EmbedEntityDef -> EmbedEntityDef -> Bool # (<=) :: EmbedEntityDef -> EmbedEntityDef -> Bool # (>) :: EmbedEntityDef -> EmbedEntityDef -> Bool # (>=) :: EmbedEntityDef -> EmbedEntityDef -> Bool # max :: EmbedEntityDef -> EmbedEntityDef -> EmbedEntityDef # min :: EmbedEntityDef -> EmbedEntityDef -> EmbedEntityDef #
Read EmbedEntityDef
Instance details Defined in Database.Persist.Types.Base Methods readsPrec :: Int -> ReadS EmbedEntityDef # readList :: ReadS [EmbedEntityDef] # readPrec :: ReadPrec EmbedEntityDef # readListPrec :: ReadPrec [EmbedEntityDef] #
Show EmbedEntityDef
Instance details Defined in Database.Persist.Types.Base Methods showsPrec :: Int -> EmbedEntityDef -> ShowS # show :: EmbedEntityDef -> String # showList :: [EmbedEntityDef] -> ShowS #
Lift EmbedEntityDef
Instance details Defined in Database.Persist.Types.Base Methods lift :: EmbedEntityDef -> Q Exp # liftTyped :: EmbedEntityDef -> Q (TExp EmbedEntityDef) #

data EmbedFieldDef #

An EmbedFieldDef is the same as a FieldDef But it is only used for embeddedFields so it only has data needed for embedding

Constructors

EmbedFieldDef
Fields emFieldDB :: FieldNameDB emFieldEmbed :: Maybe (Either SelfEmbed EntityNameHS)

Instances

Instances details

Eq EmbedFieldDef
Instance details Defined in Database.Persist.Types.Base Methods (==) :: EmbedFieldDef -> EmbedFieldDef -> Bool # (/=) :: EmbedFieldDef -> EmbedFieldDef -> Bool #
Ord EmbedFieldDef
Instance details Defined in Database.Persist.Types.Base Methods compare :: EmbedFieldDef -> EmbedFieldDef -> Ordering # (<) :: EmbedFieldDef -> EmbedFieldDef -> Bool # (<=) :: EmbedFieldDef -> EmbedFieldDef -> Bool # (>) :: EmbedFieldDef -> EmbedFieldDef -> Bool # (>=) :: EmbedFieldDef -> EmbedFieldDef -> Bool # max :: EmbedFieldDef -> EmbedFieldDef -> EmbedFieldDef # min :: EmbedFieldDef -> EmbedFieldDef -> EmbedFieldDef #
Read EmbedFieldDef
Instance details Defined in Database.Persist.Types.Base Methods readsPrec :: Int -> ReadS EmbedFieldDef # readList :: ReadS [EmbedFieldDef] # readPrec :: ReadPrec EmbedFieldDef # readListPrec :: ReadPrec [EmbedFieldDef] #
Show EmbedFieldDef
Instance details Defined in Database.Persist.Types.Base Methods showsPrec :: Int -> EmbedFieldDef -> ShowS # show :: EmbedFieldDef -> String # showList :: [EmbedFieldDef] -> ShowS #
Lift EmbedFieldDef
Instance details Defined in Database.Persist.Types.Base Methods lift :: EmbedFieldDef -> Q Exp # liftTyped :: EmbedFieldDef -> Q (TExp EmbedFieldDef) #

data UniqueDef #

Type for storing the Uniqueness constraint in the Schema. Assume you have the following schema with a uniqueness constraint:

Person
  name String
  age Int
  UniqueAge age

This will be represented as:

UniqueDef
    { uniqueHaskell = ConstraintNameHS (packPTH UniqueAge)
    , uniqueDBName = ConstraintNameDB (packPTH "unique_age")
    , uniqueFields = [(FieldNameHS (packPTH "age"), FieldNameDB (packPTH "age"))]
    , uniqueAttrs = []
    }

Constructors

UniqueDef
Fields uniqueHaskell :: !ConstraintNameHS uniqueDBName :: !ConstraintNameDB uniqueFields :: !(NonEmpty (FieldNameHS, FieldNameDB)) uniqueAttrs :: ![Attr]

Instances

Instances details

Eq UniqueDef
Instance details Defined in Database.Persist.Types.Base Methods (==) :: UniqueDef -> UniqueDef -> Bool # (/=) :: UniqueDef -> UniqueDef -> Bool #
Ord UniqueDef
Instance details Defined in Database.Persist.Types.Base Methods compare :: UniqueDef -> UniqueDef -> Ordering # (<) :: UniqueDef -> UniqueDef -> Bool # (<=) :: UniqueDef -> UniqueDef -> Bool # (>) :: UniqueDef -> UniqueDef -> Bool # (>=) :: UniqueDef -> UniqueDef -> Bool # max :: UniqueDef -> UniqueDef -> UniqueDef # min :: UniqueDef -> UniqueDef -> UniqueDef #
Read UniqueDef
Instance details Defined in Database.Persist.Types.Base Methods readsPrec :: Int -> ReadS UniqueDef # readList :: ReadS [UniqueDef] # readPrec :: ReadPrec UniqueDef # readListPrec :: ReadPrec [UniqueDef] #
Show UniqueDef
Instance details Defined in Database.Persist.Types.Base Methods showsPrec :: Int -> UniqueDef -> ShowS # show :: UniqueDef -> String # showList :: [UniqueDef] -> ShowS #
Lift UniqueDef
Instance details Defined in Database.Persist.Types.Base Methods lift :: UniqueDef -> Q Exp # liftTyped :: UniqueDef -> Q (TExp UniqueDef) #

data CompositeDef #

Constructors

CompositeDef
Fields compositeFields :: !(NonEmpty FieldDef) compositeAttrs :: ![Attr]

Instances

Instances details

Eq CompositeDef
Instance details Defined in Database.Persist.Types.Base Methods (==) :: CompositeDef -> CompositeDef -> Bool # (/=) :: CompositeDef -> CompositeDef -> Bool #
Ord CompositeDef
Instance details Defined in Database.Persist.Types.Base Methods compare :: CompositeDef -> CompositeDef -> Ordering # (<) :: CompositeDef -> CompositeDef -> Bool # (<=) :: CompositeDef -> CompositeDef -> Bool # (>) :: CompositeDef -> CompositeDef -> Bool # (>=) :: CompositeDef -> CompositeDef -> Bool # max :: CompositeDef -> CompositeDef -> CompositeDef # min :: CompositeDef -> CompositeDef -> CompositeDef #
Read CompositeDef
Instance details Defined in Database.Persist.Types.Base Methods readsPrec :: Int -> ReadS CompositeDef # readList :: ReadS [CompositeDef] # readPrec :: ReadPrec CompositeDef # readListPrec :: ReadPrec [CompositeDef] #
Show CompositeDef
Instance details Defined in Database.Persist.Types.Base Methods showsPrec :: Int -> CompositeDef -> ShowS # show :: CompositeDef -> String # showList :: [CompositeDef] -> ShowS #
Lift CompositeDef
Instance details Defined in Database.Persist.Types.Base Methods lift :: CompositeDef -> Q Exp # liftTyped :: CompositeDef -> Q (TExp CompositeDef) #

type ForeignFieldDef = (FieldNameHS, FieldNameDB) #

Used instead of FieldDef to generate a smaller amount of code

data ForeignDef #

Constructors

ForeignDef

Fields

foreignRefTableHaskell :: !EntityNameHS
foreignRefTableDBName :: !EntityNameDB
foreignConstraintNameHaskell :: !ConstraintNameHS
foreignConstraintNameDBName :: !ConstraintNameDB
foreignFieldCascade :: !FieldCascade
Determine how the field will cascade on updates and deletions.
Since: persistent-2.11.0
foreignFields :: ![(ForeignFieldDef, ForeignFieldDef)]
foreignAttrs :: ![Attr]
foreignNullable :: Bool
foreignToPrimary :: Bool
Determines if the reference is towards a Primary Key or not.
Since: persistent-2.11.0

Instances

Instances details

Eq ForeignDef
Instance details Defined in Database.Persist.Types.Base Methods (==) :: ForeignDef -> ForeignDef -> Bool # (/=) :: ForeignDef -> ForeignDef -> Bool #
Ord ForeignDef
Instance details Defined in Database.Persist.Types.Base Methods compare :: ForeignDef -> ForeignDef -> Ordering # (<) :: ForeignDef -> ForeignDef -> Bool # (<=) :: ForeignDef -> ForeignDef -> Bool # (>) :: ForeignDef -> ForeignDef -> Bool # (>=) :: ForeignDef -> ForeignDef -> Bool # max :: ForeignDef -> ForeignDef -> ForeignDef # min :: ForeignDef -> ForeignDef -> ForeignDef #
Read ForeignDef
Instance details Defined in Database.Persist.Types.Base Methods readsPrec :: Int -> ReadS ForeignDef # readList :: ReadS [ForeignDef] # readPrec :: ReadPrec ForeignDef # readListPrec :: ReadPrec [ForeignDef] #
Show ForeignDef
Instance details Defined in Database.Persist.Types.Base Methods showsPrec :: Int -> ForeignDef -> ShowS # show :: ForeignDef -> String # showList :: [ForeignDef] -> ShowS #
Lift ForeignDef
Instance details Defined in Database.Persist.Types.Base Methods lift :: ForeignDef -> Q Exp # liftTyped :: ForeignDef -> Q (TExp ForeignDef) #

data FieldCascade #

This datatype describes how a foreign reference field cascades deletes or updates.

This type is used in both parsing the model definitions and performing migrations. A Nothing in either of the field values means that the user has not specified a CascadeAction. An unspecified CascadeAction is defaulted to Restrict when doing migrations.

Since: persistent-2.11.0

Constructors

FieldCascade
Fields fcOnUpdate :: !(Maybe CascadeAction) fcOnDelete :: !(Maybe CascadeAction)

Instances

Instances details

Eq FieldCascade
Instance details Defined in Database.Persist.Types.Base Methods (==) :: FieldCascade -> FieldCascade -> Bool # (/=) :: FieldCascade -> FieldCascade -> Bool #
Ord FieldCascade
Instance details Defined in Database.Persist.Types.Base Methods compare :: FieldCascade -> FieldCascade -> Ordering # (<) :: FieldCascade -> FieldCascade -> Bool # (<=) :: FieldCascade -> FieldCascade -> Bool # (>) :: FieldCascade -> FieldCascade -> Bool # (>=) :: FieldCascade -> FieldCascade -> Bool # max :: FieldCascade -> FieldCascade -> FieldCascade # min :: FieldCascade -> FieldCascade -> FieldCascade #
Read FieldCascade
Instance details Defined in Database.Persist.Types.Base Methods readsPrec :: Int -> ReadS FieldCascade # readList :: ReadS [FieldCascade] # readPrec :: ReadPrec FieldCascade # readListPrec :: ReadPrec [FieldCascade] #
Show FieldCascade
Instance details Defined in Database.Persist.Types.Base Methods showsPrec :: Int -> FieldCascade -> ShowS # show :: FieldCascade -> String # showList :: [FieldCascade] -> ShowS #
Lift FieldCascade
Instance details Defined in Database.Persist.Types.Base Methods lift :: FieldCascade -> Q Exp # liftTyped :: FieldCascade -> Q (TExp FieldCascade) #

data CascadeAction #

An action that might happen on a deletion or update on a foreign key change.

Since: persistent-2.11.0

Constructors

Cascade
Restrict
SetNull
SetDefault

Instances

Instances details

Eq CascadeAction
Instance details Defined in Database.Persist.Types.Base Methods (==) :: CascadeAction -> CascadeAction -> Bool # (/=) :: CascadeAction -> CascadeAction -> Bool #
Ord CascadeAction
Instance details Defined in Database.Persist.Types.Base Methods compare :: CascadeAction -> CascadeAction -> Ordering # (<) :: CascadeAction -> CascadeAction -> Bool # (<=) :: CascadeAction -> CascadeAction -> Bool # (>) :: CascadeAction -> CascadeAction -> Bool # (>=) :: CascadeAction -> CascadeAction -> Bool # max :: CascadeAction -> CascadeAction -> CascadeAction # min :: CascadeAction -> CascadeAction -> CascadeAction #
Read CascadeAction
Instance details Defined in Database.Persist.Types.Base Methods readsPrec :: Int -> ReadS CascadeAction # readList :: ReadS [CascadeAction] # readPrec :: ReadPrec CascadeAction # readListPrec :: ReadPrec [CascadeAction] #
Show CascadeAction
Instance details Defined in Database.Persist.Types.Base Methods showsPrec :: Int -> CascadeAction -> ShowS # show :: CascadeAction -> String # showList :: [CascadeAction] -> ShowS #
Lift CascadeAction
Instance details Defined in Database.Persist.Types.Base Methods lift :: CascadeAction -> Q Exp # liftTyped :: CascadeAction -> Q (TExp CascadeAction) #

data PersistException #

Constructors

PersistError Text	Generic Exception
PersistMarshalError Text
PersistInvalidField Text
PersistForeignConstraintUnmet Text
PersistMongoDBError Text
PersistMongoDBUnsupported Text

Instances

Instances details

Show PersistException
Instance details Defined in Database.Persist.Types.Base Methods showsPrec :: Int -> PersistException -> ShowS # show :: PersistException -> String # showList :: [PersistException] -> ShowS #
Exception PersistException
Instance details Defined in Database.Persist.Types.Base Methods toException :: PersistException -> SomeException # fromException :: SomeException -> Maybe PersistException # displayException :: PersistException -> String #

data SqlType #

A SQL data type. Naming attempts to reflect the underlying Haskell datatypes, eg SqlString instead of SqlVarchar. Different SQL databases may have different translations for these types.

Constructors

SqlString
SqlInt32
SqlInt64
SqlReal
SqlNumeric Word32 Word32
SqlBool
SqlDay
SqlTime
SqlDayTime	Always uses UTC timezone
SqlBlob
SqlOther Text	a backend-specific name

Instances

Instances details

Eq SqlType
Instance details Defined in Database.Persist.Types.Base Methods (==) :: SqlType -> SqlType -> Bool # (/=) :: SqlType -> SqlType -> Bool #
Ord SqlType
Instance details Defined in Database.Persist.Types.Base Methods compare :: SqlType -> SqlType -> Ordering # (<) :: SqlType -> SqlType -> Bool # (<=) :: SqlType -> SqlType -> Bool # (>) :: SqlType -> SqlType -> Bool # (>=) :: SqlType -> SqlType -> Bool # max :: SqlType -> SqlType -> SqlType # min :: SqlType -> SqlType -> SqlType #
Read SqlType
Instance details Defined in Database.Persist.Types.Base Methods readsPrec :: Int -> ReadS SqlType # readList :: ReadS [SqlType] # readPrec :: ReadPrec SqlType # readListPrec :: ReadPrec [SqlType] #
Show SqlType
Instance details Defined in Database.Persist.Types.Base Methods showsPrec :: Int -> SqlType -> ShowS # show :: SqlType -> String # showList :: [SqlType] -> ShowS #
Lift SqlType
Instance details Defined in Database.Persist.Types.Base Methods lift :: SqlType -> Q Exp # liftTyped :: SqlType -> Q (TExp SqlType) #

data PersistFilter #

Constructors

Eq
Ne
Gt
Lt
Ge
Le
In
NotIn
BackendSpecificFilter Text

Instances

Instances details

Read PersistFilter
Instance details Defined in Database.Persist.Types.Base Methods readsPrec :: Int -> ReadS PersistFilter # readList :: ReadS [PersistFilter] # readPrec :: ReadPrec PersistFilter # readListPrec :: ReadPrec [PersistFilter] #
Show PersistFilter
Instance details Defined in Database.Persist.Types.Base Methods showsPrec :: Int -> PersistFilter -> ShowS # show :: PersistFilter -> String # showList :: [PersistFilter] -> ShowS #
Lift PersistFilter
Instance details Defined in Database.Persist.Types.Base Methods lift :: PersistFilter -> Q Exp # liftTyped :: PersistFilter -> Q (TExp PersistFilter) #

data UpdateException #

Constructors

KeyNotFound String
UpsertError String

Instances

Instances details

Show UpdateException
Instance details Defined in Database.Persist.Types.Base Methods showsPrec :: Int -> UpdateException -> ShowS # show :: UpdateException -> String # showList :: [UpdateException] -> ShowS #
Exception UpdateException
Instance details Defined in Database.Persist.Types.Base Methods toException :: UpdateException -> SomeException # fromException :: SomeException -> Maybe UpdateException # displayException :: UpdateException -> String #

data PersistUpdate #

Constructors

Assign
Add
Subtract
Multiply
Divide
BackendSpecificUpdate Text

Instances

Instances details

Read PersistUpdate
Instance details Defined in Database.Persist.Types.Base Methods readsPrec :: Int -> ReadS PersistUpdate # readList :: ReadS [PersistUpdate] # readPrec :: ReadPrec PersistUpdate # readListPrec :: ReadPrec [PersistUpdate] #
Show PersistUpdate
Instance details Defined in Database.Persist.Types.Base Methods showsPrec :: Int -> PersistUpdate -> ShowS # show :: PersistUpdate -> String # showList :: [PersistUpdate] -> ShowS #
Lift PersistUpdate
Instance details Defined in Database.Persist.Types.Base Methods lift :: PersistUpdate -> Q Exp # liftTyped :: PersistUpdate -> Q (TExp PersistUpdate) #

data FieldDef #

A FieldDef represents the inormation that persistent knows about a field of a datatype. This includes information used to parse the field out of the database and what the field corresponds to.

Constructors

FieldDef

Fields

fieldHaskell :: !FieldNameHS
The name of the field. Note that this does not corresponds to the record labels generated for the particular entity - record labels are generated with the type name prefixed to the field, so a FieldDef that contains a FieldNameHS "name" for a type User will have a record field userName.
fieldDB :: !FieldNameDB
The name of the field in the database. For SQL databases, this corresponds to the column name.
fieldType :: !FieldType
The type of the field in Haskell.
fieldSqlType :: !SqlType
The type of the field in a SQL database.
fieldAttrs :: ![FieldAttr]
User annotations for a field. These are provided with the ! operator.
fieldStrict :: !Bool
If this is True, then the Haskell datatype will have a strict record field. The default value for this is True.
fieldReference :: !ReferenceDef
fieldCascade :: !FieldCascade
Defines how operations on the field cascade on to the referenced tables. This doesn't have any meaning if the fieldReference is set to NoReference or SelfReference. The cascade option here should be the same as the one obtained in the fieldReference.
Since: persistent-2.11.0
fieldComments :: !(Maybe Text)
Optional comments for a Field. There is not currently a way to attach comments to a field in the quasiquoter.
Since: persistent-2.10.0
fieldGenerated :: !(Maybe Text)
Whether or not the field is a GENERATED column, and additionally the expression to use for generation.
Since: persistent-2.11.0.0
fieldIsImplicitIdColumn :: !Bool
True if the field is an implicit ID column. False otherwise.
Since: persistent-2.13.0.0

Instances

Instances details

Eq FieldDef
Instance details Defined in Database.Persist.Types.Base Methods (==) :: FieldDef -> FieldDef -> Bool # (/=) :: FieldDef -> FieldDef -> Bool #
Ord FieldDef
Instance details Defined in Database.Persist.Types.Base Methods compare :: FieldDef -> FieldDef -> Ordering # (<) :: FieldDef -> FieldDef -> Bool # (<=) :: FieldDef -> FieldDef -> Bool # (>) :: FieldDef -> FieldDef -> Bool # (>=) :: FieldDef -> FieldDef -> Bool # max :: FieldDef -> FieldDef -> FieldDef # min :: FieldDef -> FieldDef -> FieldDef #
Read FieldDef
Instance details Defined in Database.Persist.Types.Base Methods readsPrec :: Int -> ReadS FieldDef # readList :: ReadS [FieldDef] # readPrec :: ReadPrec FieldDef # readListPrec :: ReadPrec [FieldDef] #
Show FieldDef
Instance details Defined in Database.Persist.Types.Base Methods showsPrec :: Int -> FieldDef -> ShowS # show :: FieldDef -> String # showList :: [FieldDef] -> ShowS #
Lift FieldDef
Instance details Defined in Database.Persist.Types.Base Methods lift :: FieldDef -> Q Exp # liftTyped :: FieldDef -> Q (TExp FieldDef) #

fromPersistValueText :: PersistValue -> Either Text Text #

data PersistValue #

A raw value which can be stored in any backend and can be marshalled to and from a PersistField.

Constructors

PersistText Text
PersistByteString ByteString
PersistInt64 Int64
PersistDouble Double
PersistRational Rational
PersistBool Bool
PersistDay Day
PersistTimeOfDay TimeOfDay
PersistUTCTime UTCTime
PersistNull
PersistList [PersistValue]
PersistMap [(Text, PersistValue)]
PersistObjectId ByteString	Intended especially for MongoDB backend
PersistArray [PersistValue]	Intended especially for PostgreSQL backend for text arrays
PersistLiteral_ LiteralType ByteString	This constructor is used to specify some raw literal value for the backend. The `LiteralType` value specifies how the value should be escaped. This can be used to make special, custom types avaialable in the back end. Since: persistent-2.12.0.0

Bundled Patterns

pattern PersistDbSpecific :: ByteString -> PersistValue

This pattern synonym used to be a data constructor for the PersistValue type. It was changed to be a pattern so that JSON-encoded database values could be parsed into their corresponding values. You should not use this, and instead prefer to pattern match on PersistLiteral_ directly.

If you use this, it will overlap a patern match on the 'PersistLiteral_, PersistLiteral, and PersistLiteralEscaped patterns. If you need to disambiguate between these constructors, pattern match on PersistLiteral_ directly.

Since: persistent-2.12.0.0

pattern PersistLiteralEscaped :: ByteString -> PersistValue

This pattern synonym used to be a data constructor on PersistValue, but was changed into a catch-all pattern synonym to allow backwards compatiblity with database types. See the documentation on PersistDbSpecific for more details.

Since: persistent-2.12.0.0

pattern PersistLiteral :: ByteString -> PersistValue

This pattern synonym used to be a data constructor on PersistValue, but was changed into a catch-all pattern synonym to allow backwards compatiblity with database types. See the documentation on PersistDbSpecific for more details.

Since: persistent-2.12.0.0

Instances

Instances details

Eq PersistValue
Instance details Defined in Database.Persist.PersistValue Methods (==) :: PersistValue -> PersistValue -> Bool # (/=) :: PersistValue -> PersistValue -> Bool #
Ord PersistValue
Instance details Defined in Database.Persist.PersistValue Methods compare :: PersistValue -> PersistValue -> Ordering # (<) :: PersistValue -> PersistValue -> Bool # (<=) :: PersistValue -> PersistValue -> Bool # (>) :: PersistValue -> PersistValue -> Bool # (>=) :: PersistValue -> PersistValue -> Bool # max :: PersistValue -> PersistValue -> PersistValue # min :: PersistValue -> PersistValue -> PersistValue #
Read PersistValue
Instance details Defined in Database.Persist.PersistValue Methods readsPrec :: Int -> ReadS PersistValue # readList :: ReadS [PersistValue] # readPrec :: ReadPrec PersistValue # readListPrec :: ReadPrec [PersistValue] #
Show PersistValue
Instance details Defined in Database.Persist.PersistValue Methods showsPrec :: Int -> PersistValue -> ShowS # show :: PersistValue -> String # showList :: [PersistValue] -> ShowS #
ToJSON PersistValue
Instance details Defined in Database.Persist.PersistValue Methods toJSON :: PersistValue -> Value # toEncoding :: PersistValue -> Encoding # toJSONList :: [PersistValue] -> Value # toEncodingList :: [PersistValue] -> Encoding #
FromJSON PersistValue
Instance details Defined in Database.Persist.PersistValue Methods parseJSON :: Value -> Parser PersistValue # parseJSONList :: Value -> Parser [PersistValue] #
ToHttpApiData PersistValue
Instance details Defined in Database.Persist.PersistValue Methods toUrlPiece :: PersistValue -> Text # toEncodedUrlPiece :: PersistValue -> Builder # toHeader :: PersistValue -> ByteString # toQueryParam :: PersistValue -> Text #
FromHttpApiData PersistValue
Instance details Defined in Database.Persist.PersistValue Methods parseUrlPiece :: Text -> Either Text PersistValue # parseHeader :: ByteString -> Either Text PersistValue # parseQueryParam :: Text -> Either Text PersistValue #
PathPiece PersistValue
Instance details Defined in Database.Persist.PersistValue Methods fromPathPiece :: Text -> Maybe PersistValue # toPathPiece :: PersistValue -> Text #
PersistField PersistValue
Instance details Defined in Database.Persist.Class.PersistField Methods toPersistValue :: PersistValue -> PersistValue # fromPersistValue :: PersistValue -> Either Text PersistValue #

data LiteralType #

A type that determines how a backend should handle the literal.

Since: persistent-2.12.0.0

Constructors

Escaped

The accompanying value will be escaped before inserting into the database. This is the correct default choice to use.

Since: persistent-2.12.0.0

Unescaped

The accompanying value will not be escaped when inserting into the database. This is potentially dangerous - use this with care.

Since: persistent-2.12.0.0

DbSpecific

The DbSpecific constructor corresponds to the legacy PersistDbSpecific constructor. We need to keep this around because old databases may have serialized JSON representations that reference this. We don't want to break the ability of a database to load rows.

Since: persistent-2.12.0.0

Instances

Instances details

Eq LiteralType
Instance details Defined in Database.Persist.PersistValue Methods (==) :: LiteralType -> LiteralType -> Bool # (/=) :: LiteralType -> LiteralType -> Bool #
Ord LiteralType
Instance details Defined in Database.Persist.PersistValue Methods compare :: LiteralType -> LiteralType -> Ordering # (<) :: LiteralType -> LiteralType -> Bool # (<=) :: LiteralType -> LiteralType -> Bool # (>) :: LiteralType -> LiteralType -> Bool # (>=) :: LiteralType -> LiteralType -> Bool # max :: LiteralType -> LiteralType -> LiteralType # min :: LiteralType -> LiteralType -> LiteralType #
Read LiteralType
Instance details Defined in Database.Persist.PersistValue Methods readsPrec :: Int -> ReadS LiteralType # readList :: ReadS [LiteralType] # readPrec :: ReadPrec LiteralType # readListPrec :: ReadPrec [LiteralType] #
Show LiteralType
Instance details Defined in Database.Persist.PersistValue Methods showsPrec :: Int -> LiteralType -> ShowS # show :: LiteralType -> String # showList :: [LiteralType] -> ShowS #

class DatabaseName a where #

Convenience operations for working with '-NameDB' types.

Since: persistent-2.12.0.0

Methods

escapeWith :: (Text -> str) -> a -> str #

Instances

Instances details

DatabaseName FieldNameDB	Since: persistent-2.12.0.0
Instance details Defined in Database.Persist.Names Methods escapeWith :: (Text -> str) -> FieldNameDB -> str #
DatabaseName EntityNameDB
Instance details Defined in Database.Persist.Names Methods escapeWith :: (Text -> str) -> EntityNameDB -> str #
DatabaseName ConstraintNameDB	Since: persistent-2.12.0.0
Instance details Defined in Database.Persist.Names Methods escapeWith :: (Text -> str) -> ConstraintNameDB -> str #

newtype FieldNameDB #

An EntityNameDB represents the datastore-side name that persistent will use for an entity.

Since: persistent-2.12.0.0

Constructors

FieldNameDB
Fields unFieldNameDB :: Text

Instances

Instances details

Eq FieldNameDB
Instance details Defined in Database.Persist.Names Methods (==) :: FieldNameDB -> FieldNameDB -> Bool # (/=) :: FieldNameDB -> FieldNameDB -> Bool #
Ord FieldNameDB
Instance details Defined in Database.Persist.Names Methods compare :: FieldNameDB -> FieldNameDB -> Ordering # (<) :: FieldNameDB -> FieldNameDB -> Bool # (<=) :: FieldNameDB -> FieldNameDB -> Bool # (>) :: FieldNameDB -> FieldNameDB -> Bool # (>=) :: FieldNameDB -> FieldNameDB -> Bool # max :: FieldNameDB -> FieldNameDB -> FieldNameDB # min :: FieldNameDB -> FieldNameDB -> FieldNameDB #
Read FieldNameDB
Instance details Defined in Database.Persist.Names Methods readsPrec :: Int -> ReadS FieldNameDB # readList :: ReadS [FieldNameDB] # readPrec :: ReadPrec FieldNameDB # readListPrec :: ReadPrec [FieldNameDB] #
Show FieldNameDB
Instance details Defined in Database.Persist.Names Methods showsPrec :: Int -> FieldNameDB -> ShowS # show :: FieldNameDB -> String # showList :: [FieldNameDB] -> ShowS #
DatabaseName FieldNameDB	Since: persistent-2.12.0.0
Instance details Defined in Database.Persist.Names Methods escapeWith :: (Text -> str) -> FieldNameDB -> str #
Lift FieldNameDB
Instance details Defined in Database.Persist.Names Methods lift :: FieldNameDB -> Q Exp # liftTyped :: FieldNameDB -> Q (TExp FieldNameDB) #

newtype FieldNameHS #

A FieldNameHS represents the Haskell-side name that persistent will use for a field.

Since: persistent-2.12.0.0

Constructors

FieldNameHS
Fields unFieldNameHS :: Text

Instances

Instances details

Eq FieldNameHS
Instance details Defined in Database.Persist.Names Methods (==) :: FieldNameHS -> FieldNameHS -> Bool # (/=) :: FieldNameHS -> FieldNameHS -> Bool #
Ord FieldNameHS
Instance details Defined in Database.Persist.Names Methods compare :: FieldNameHS -> FieldNameHS -> Ordering # (<) :: FieldNameHS -> FieldNameHS -> Bool # (<=) :: FieldNameHS -> FieldNameHS -> Bool # (>) :: FieldNameHS -> FieldNameHS -> Bool # (>=) :: FieldNameHS -> FieldNameHS -> Bool # max :: FieldNameHS -> FieldNameHS -> FieldNameHS # min :: FieldNameHS -> FieldNameHS -> FieldNameHS #
Read FieldNameHS
Instance details Defined in Database.Persist.Names Methods readsPrec :: Int -> ReadS FieldNameHS # readList :: ReadS [FieldNameHS] # readPrec :: ReadPrec FieldNameHS # readListPrec :: ReadPrec [FieldNameHS] #
Show FieldNameHS
Instance details Defined in Database.Persist.Names Methods showsPrec :: Int -> FieldNameHS -> ShowS # show :: FieldNameHS -> String # showList :: [FieldNameHS] -> ShowS #
Lift FieldNameHS
Instance details Defined in Database.Persist.Names Methods lift :: FieldNameHS -> Q Exp # liftTyped :: FieldNameHS -> Q (TExp FieldNameHS) #

newtype EntityNameHS #

An EntityNameHS represents the Haskell-side name that persistent will use for an entity.

Since: persistent-2.12.0.0

Constructors

EntityNameHS
Fields unEntityNameHS :: Text

Instances

Instances details

Eq EntityNameHS
Instance details Defined in Database.Persist.Names Methods (==) :: EntityNameHS -> EntityNameHS -> Bool # (/=) :: EntityNameHS -> EntityNameHS -> Bool #
Ord EntityNameHS
Instance details Defined in Database.Persist.Names Methods compare :: EntityNameHS -> EntityNameHS -> Ordering # (<) :: EntityNameHS -> EntityNameHS -> Bool # (<=) :: EntityNameHS -> EntityNameHS -> Bool # (>) :: EntityNameHS -> EntityNameHS -> Bool # (>=) :: EntityNameHS -> EntityNameHS -> Bool # max :: EntityNameHS -> EntityNameHS -> EntityNameHS # min :: EntityNameHS -> EntityNameHS -> EntityNameHS #
Read EntityNameHS
Instance details Defined in Database.Persist.Names Methods readsPrec :: Int -> ReadS EntityNameHS # readList :: ReadS [EntityNameHS] # readPrec :: ReadPrec EntityNameHS # readListPrec :: ReadPrec [EntityNameHS] #
Show EntityNameHS
Instance details Defined in Database.Persist.Names Methods showsPrec :: Int -> EntityNameHS -> ShowS # show :: EntityNameHS -> String # showList :: [EntityNameHS] -> ShowS #
Lift EntityNameHS
Instance details Defined in Database.Persist.Names Methods lift :: EntityNameHS -> Q Exp # liftTyped :: EntityNameHS -> Q (TExp EntityNameHS) #

newtype EntityNameDB #

An EntityNameDB represents the datastore-side name that persistent will use for an entity.

Since: persistent-2.12.0.0

Constructors

EntityNameDB
Fields unEntityNameDB :: Text

Instances

Instances details

Eq EntityNameDB
Instance details Defined in Database.Persist.Names Methods (==) :: EntityNameDB -> EntityNameDB -> Bool # (/=) :: EntityNameDB -> EntityNameDB -> Bool #
Ord EntityNameDB
Instance details Defined in Database.Persist.Names Methods compare :: EntityNameDB -> EntityNameDB -> Ordering # (<) :: EntityNameDB -> EntityNameDB -> Bool # (<=) :: EntityNameDB -> EntityNameDB -> Bool # (>) :: EntityNameDB -> EntityNameDB -> Bool # (>=) :: EntityNameDB -> EntityNameDB -> Bool # max :: EntityNameDB -> EntityNameDB -> EntityNameDB # min :: EntityNameDB -> EntityNameDB -> EntityNameDB #
Read EntityNameDB
Instance details Defined in Database.Persist.Names Methods readsPrec :: Int -> ReadS EntityNameDB # readList :: ReadS [EntityNameDB] # readPrec :: ReadPrec EntityNameDB # readListPrec :: ReadPrec [EntityNameDB] #
Show EntityNameDB
Instance details Defined in Database.Persist.Names Methods showsPrec :: Int -> EntityNameDB -> ShowS # show :: EntityNameDB -> String # showList :: [EntityNameDB] -> ShowS #
DatabaseName EntityNameDB
Instance details Defined in Database.Persist.Names Methods escapeWith :: (Text -> str) -> EntityNameDB -> str #
Lift EntityNameDB
Instance details Defined in Database.Persist.Names Methods lift :: EntityNameDB -> Q Exp # liftTyped :: EntityNameDB -> Q (TExp EntityNameDB) #

newtype ConstraintNameDB #

A ConstraintNameDB represents the datastore-side name that persistent will use for a constraint.

Since: persistent-2.12.0.0

Constructors

ConstraintNameDB
Fields unConstraintNameDB :: Text

Instances

Instances details

Eq ConstraintNameDB
Instance details Defined in Database.Persist.Names Methods (==) :: ConstraintNameDB -> ConstraintNameDB -> Bool # (/=) :: ConstraintNameDB -> ConstraintNameDB -> Bool #
Ord ConstraintNameDB
Instance details Defined in Database.Persist.Names Methods compare :: ConstraintNameDB -> ConstraintNameDB -> Ordering # (<) :: ConstraintNameDB -> ConstraintNameDB -> Bool # (<=) :: ConstraintNameDB -> ConstraintNameDB -> Bool # (>) :: ConstraintNameDB -> ConstraintNameDB -> Bool # (>=) :: ConstraintNameDB -> ConstraintNameDB -> Bool # max :: ConstraintNameDB -> ConstraintNameDB -> ConstraintNameDB # min :: ConstraintNameDB -> ConstraintNameDB -> ConstraintNameDB #
Read ConstraintNameDB
Instance details Defined in Database.Persist.Names Methods readsPrec :: Int -> ReadS ConstraintNameDB # readList :: ReadS [ConstraintNameDB] # readPrec :: ReadPrec ConstraintNameDB # readListPrec :: ReadPrec [ConstraintNameDB] #
Show ConstraintNameDB
Instance details Defined in Database.Persist.Names Methods showsPrec :: Int -> ConstraintNameDB -> ShowS # show :: ConstraintNameDB -> String # showList :: [ConstraintNameDB] -> ShowS #
DatabaseName ConstraintNameDB	Since: persistent-2.12.0.0
Instance details Defined in Database.Persist.Names Methods escapeWith :: (Text -> str) -> ConstraintNameDB -> str #
Lift ConstraintNameDB
Instance details Defined in Database.Persist.Names Methods lift :: ConstraintNameDB -> Q Exp # liftTyped :: ConstraintNameDB -> Q (TExp ConstraintNameDB) #

newtype ConstraintNameHS #

An ConstraintNameHS represents the Haskell-side name that persistent will use for a constraint.

Since: persistent-2.12.0.0

Constructors

ConstraintNameHS
Fields unConstraintNameHS :: Text

Instances

Instances details

Eq ConstraintNameHS
Instance details Defined in Database.Persist.Names Methods (==) :: ConstraintNameHS -> ConstraintNameHS -> Bool # (/=) :: ConstraintNameHS -> ConstraintNameHS -> Bool #
Ord ConstraintNameHS
Instance details Defined in Database.Persist.Names Methods compare :: ConstraintNameHS -> ConstraintNameHS -> Ordering # (<) :: ConstraintNameHS -> ConstraintNameHS -> Bool # (<=) :: ConstraintNameHS -> ConstraintNameHS -> Bool # (>) :: ConstraintNameHS -> ConstraintNameHS -> Bool # (>=) :: ConstraintNameHS -> ConstraintNameHS -> Bool # max :: ConstraintNameHS -> ConstraintNameHS -> ConstraintNameHS # min :: ConstraintNameHS -> ConstraintNameHS -> ConstraintNameHS #
Read ConstraintNameHS
Instance details Defined in Database.Persist.Names Methods readsPrec :: Int -> ReadS ConstraintNameHS # readList :: ReadS [ConstraintNameHS] # readPrec :: ReadPrec ConstraintNameHS # readListPrec :: ReadPrec [ConstraintNameHS] #
Show ConstraintNameHS
Instance details Defined in Database.Persist.Names Methods showsPrec :: Int -> ConstraintNameHS -> ShowS # show :: ConstraintNameHS -> String # showList :: [ConstraintNameHS] -> ShowS #
Lift ConstraintNameHS
Instance details Defined in Database.Persist.Names Methods lift :: ConstraintNameHS -> Q Exp # liftTyped :: ConstraintNameHS -> Q (TExp ConstraintNameHS) #

type family PersistConfigPool c #

Instances

Instances details

type PersistConfigPool (Either c1 c2)
Instance details Defined in Database.Persist.Class.PersistConfig type PersistConfigPool (Either c1 c2) = PersistConfigPool c1

type family PersistConfigBackend c :: (Type -> Type) -> Type -> Type #

Instances

Instances details

type PersistConfigBackend (Either c1 c2)
Instance details Defined in Database.Persist.Class.PersistConfig type PersistConfigBackend (Either c1 c2) = PersistConfigBackend c1

class PersistConfig c where #

Represents a value containing all the configuration options for a specific backend. This abstraction makes it easier to write code that can easily swap backends.

Minimal complete definition

loadConfig, createPoolConfig, runPool

Associated Types

type PersistConfigBackend c :: (Type -> Type) -> Type -> Type #

type PersistConfigPool c #

Methods

loadConfig :: Value -> Parser c #

Load the config settings from a Value, most likely taken from a YAML config file.

applyEnv :: c -> IO c #

Modify the config settings based on environment variables.

createPoolConfig :: c -> IO (PersistConfigPool c) #

Create a new connection pool based on the given config settings.

runPool :: MonadUnliftIO m => c -> PersistConfigBackend c m a -> PersistConfigPool c -> m a #

Run a database action by taking a connection from the pool.

Instances

Instances details

(PersistConfig c1, PersistConfig c2, PersistConfigPool c1 ~ PersistConfigPool c2, PersistConfigBackend c1 ~ PersistConfigBackend c2) => PersistConfig (Either c1 c2)

Instance details

Defined in Database.Persist.Class.PersistConfig

Associated Types

type PersistConfigBackend (Either c1 c2) :: (Type -> Type) -> Type -> Type #

type PersistConfigPool (Either c1 c2) #

Methods

loadConfig :: Value -> Parser (Either c1 c2) #

applyEnv :: Either c1 c2 -> IO (Either c1 c2) #

createPoolConfig :: Either c1 c2 -> IO (PersistConfigPool (Either c1 c2)) #

runPool :: MonadUnliftIO m => Either c1 c2 -> PersistConfigBackend (Either c1 c2) m a -> PersistConfigPool (Either c1 c2) -> m a #

mkMessageVariant #

Arguments

:: String	master translation data type
-> String	existing type to add translations for
-> FilePath	path to translation folder
-> Lang	default language
-> Q [Dec]

create an additional set of translations for a type created by mkMessage

mkMessageFor #

Arguments

:: String	master translation data type
-> String	existing type to add translations for
-> FilePath	path to translation folder
-> Lang	default language
-> Q [Dec]

create RenderMessage instance for an existing data-type

mkMessage #

Arguments

:: String	base name to use for translation type
-> FilePath	subdirectory which contains the translation files
-> Lang	default translation language
-> Q [Dec]

generate translations from translation files

This function will:

look in the supplied subdirectory for files ending in .msg
generate a type based on the constructors found
create a RenderMessage instance

class ToMessage a where #

ToMessage is used to convert the value inside #{ } to Text

The primary purpose of this class is to allow the value in #{ } to be a String or Text rather than forcing it to always be Text.

Methods

toMessage :: a -> Text #

Instances

Instances details

ToMessage String
Instance details Defined in Text.Shakespeare.I18N Methods toMessage :: String -> Text #
ToMessage Text
Instance details Defined in Text.Shakespeare.I18N Methods toMessage :: Text -> Text #

class RenderMessage master message where #

the RenderMessage is used to provide translations for a message types

The master argument exists so that it is possible to provide more than one set of translations for a message type. This is useful if a library provides a default set of translations, but the user of the library wants to provide a different set of translations.

Methods

renderMessage #

Arguments

:: master	type that specifies which set of translations to use
-> [Lang]	acceptable languages in descending order of preference
-> message	message to translate
-> Text

Instances

Instances details

RenderMessage master Text
Instance details Defined in Text.Shakespeare.I18N Methods renderMessage :: master -> [Lang] -> Text -> Text #
RenderMessage App FormMessage Source #
Instance details Defined in Hledger.Web.Foundation Methods renderMessage :: App -> [Lang] -> FormMessage -> Text #
master ~ master' => RenderMessage master (SomeMessage master')
Instance details Defined in Text.Shakespeare.I18N Methods renderMessage :: master -> [Lang] -> SomeMessage master' -> Text #

type Lang = Text #

an RFC1766 / ISO 639-1 language code (eg, fr, en-GB, etc).

data SomeMessage master #

Constructors

RenderMessage master msg => SomeMessage msg

Instances

Instances details

master ~ master' => RenderMessage master (SomeMessage master')
Instance details Defined in Text.Shakespeare.I18N Methods renderMessage :: master -> [Lang] -> SomeMessage master' -> Text #
IsString (SomeMessage master)
Instance details Defined in Text.Shakespeare.I18N Methods fromString :: String -> SomeMessage master #

cassius :: QuasiQuoter #

xhamlet :: QuasiQuoter #

Like hamlet, but produces XHTML.

hamlet :: QuasiQuoter #

Hamlet quasi-quoter. May only be used to generate expressions.

Generated expression have type HtmlUrl url, for some url.

data MyRoute = Home

render :: Render MyRoute
render Home _ = "/home"

>>> putStrLn (renderHtml ([hamlet|<a href=@{Home}>Home|] render))
<a href="/home">Home</a>

shamlet :: QuasiQuoter #

"Simple Hamlet" quasi-quoter. May only be used to generate expressions.

Generated expressions have type Html.

>>> putStrLn (renderHtml [shamlet|<div>Hello, world!|])
<div>Hello, world!</div>

type HtmlUrl url = Render url -> Html #

A function generating an Html given a URL-rendering function.

lucius :: QuasiQuoter #

>>> renderCss ([lucius|foo{bar:baz}|] undefined)
"foo{bar:baz}"

renderCssUrl :: (url -> [(Text, Text)] -> Text) -> CssUrl url -> Text #

type CssUrl url = (url -> [(Text, Text)] -> Text) -> Css #

julius :: QuasiQuoter #

renderJavascriptUrl :: (url -> [(Text, Text)] -> Text) -> JavascriptUrl url -> Text #

render with route interpolation. If using this module standalone, apart from type-safe routes, a dummy renderer can be used:

renderJavascriptUrl (\_ _ -> undefined) javascriptUrl

When using Yesod, a renderer is generated for you, which can be accessed within the GHandler monad: getUrlRenderParams.

type JavascriptUrl url = (url -> [(Text, Text)] -> Text) -> Javascript #

Return type of template-reading functions.

readsTime #

Arguments

:: ParseTime t
=> TimeLocale	Time locale.
-> String	Format string
-> ReadS t

readTime #

Arguments

:: ParseTime t
=> TimeLocale	Time locale.
-> String	Format string.
-> String	Input string.
-> t	The time value.

readPTime #

Arguments

:: ParseTime t
=> Bool	Accept leading whitespace?
-> TimeLocale	Time locale.
-> String	Format string
-> ReadP t

Parse a time value given a format string. See parseTimeM for details.

readSTime #

Arguments

:: ParseTime t
=> Bool	Accept leading whitespace?
-> TimeLocale	Time locale.
-> String	Format string
-> ReadS t

Parse a time value given a format string. See parseTimeM for details.

parseTimeOrError #

Arguments

:: ParseTime t
=> Bool	Accept leading and trailing whitespace?
-> TimeLocale	Time locale.
-> String	Format string.
-> String	Input string.
-> t	The time value.

Parse a time value given a format string. Fails if the input could not be parsed using the given format. See parseTimeM for details.

parseTimeM #

Arguments

:: (MonadFail m, ParseTime t)
=> Bool	Accept leading and trailing whitespace?
-> TimeLocale	Time locale.
-> String	Format string.
-> String	Input string.
-> m t	Return the time value, or fail if the input could not be parsed using the given format.

Parses a time value given a format string. Supports the same %-codes as formatTime, including %-, %_ and %0 modifiers, however padding widths are not supported. Case is not significant in the input string. Some variations in the input are accepted:

%z: accepts any of ±HHMM or ±HH:MM.
%Z: accepts any string of letters, or any of the formats accepted by %z.
%0Y: accepts exactly four digits.
%0G: accepts exactly four digits.
%0C: accepts exactly two digits.
%0f: accepts exactly two digits.

For example, to parse a date in YYYY-MM-DD format, while allowing the month and date to have optional leading zeros (notice the - modifier used for %m and %d):

Prelude Data.Time> parseTimeM True defaultTimeLocale "%Y-%-m-%-d" "2010-3-04" :: Maybe Day
Just 2010-03-04

utcToLocalZonedTime :: UTCTime -> IO ZonedTime #

getZonedTime :: IO ZonedTime #

zonedTimeToUTC :: ZonedTime -> UTCTime #

utcToZonedTime :: TimeZone -> UTCTime -> ZonedTime #

data ZonedTime #

A local time together with a time zone.

There is no Eq instance for ZonedTime. If you want to compare local times, use zonedTimeToLocalTime. If you want to compare absolute times, use zonedTimeToUTC.

Constructors

ZonedTime
Fields zonedTimeToLocalTime :: LocalTime zonedTimeZone :: TimeZone

Instances

Instances details

Data ZonedTime
Instance details Defined in Data.Time.LocalTime.Internal.ZonedTime Methods gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> ZonedTime -> c ZonedTime # gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c ZonedTime # toConstr :: ZonedTime -> Constr # dataTypeOf :: ZonedTime -> DataType # dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c ZonedTime) # dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c ZonedTime) # gmapT :: (forall b. Data b => b -> b) -> ZonedTime -> ZonedTime # gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> ZonedTime -> r # gmapQr :: forall r r'. (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> ZonedTime -> r # gmapQ :: (forall d. Data d => d -> u) -> ZonedTime -> [u] # gmapQi :: Int -> (forall d. Data d => d -> u) -> ZonedTime -> u # gmapM :: Monad m => (forall d. Data d => d -> m d) -> ZonedTime -> m ZonedTime # gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> ZonedTime -> m ZonedTime # gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> ZonedTime -> m ZonedTime #
Show ZonedTime
Instance details Defined in Data.Time.LocalTime.Internal.ZonedTime Methods showsPrec :: Int -> ZonedTime -> ShowS # show :: ZonedTime -> String # showList :: [ZonedTime] -> ShowS #
ToJSON ZonedTime
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: ZonedTime -> Value # toEncoding :: ZonedTime -> Encoding # toJSONList :: [ZonedTime] -> Value # toEncodingList :: [ZonedTime] -> Encoding #
ToJSONKey ZonedTime
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSONKey :: ToJSONKeyFunction ZonedTime # toJSONKeyList :: ToJSONKeyFunction [ZonedTime] #
FromJSON ZonedTime	Supported string formats: `YYYY-MM-DD HH:MM Z` `YYYY-MM-DD HH:MM:SS Z` `YYYY-MM-DD HH:MM:SS.SSS Z` The first space may instead be a `T`, and the second space is optional. The `Z` represents UTC. The `Z` may be replaced with a time zone offset of the form `+0000` or `-08:00`, where the first two digits are hours, the `:` is optional and the second two digits (also optional) are minutes.
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser ZonedTime # parseJSONList :: Value -> Parser [ZonedTime] #
FromJSONKey ZonedTime
Instance details Defined in Data.Aeson.Types.FromJSON Methods fromJSONKey :: FromJSONKeyFunction ZonedTime # fromJSONKeyList :: FromJSONKeyFunction [ZonedTime] #
NFData ZonedTime
Instance details Defined in Data.Time.LocalTime.Internal.ZonedTime Methods rnf :: ZonedTime -> () #

formatTime :: FormatTime t => TimeLocale -> String -> t -> String #

Substitute various time-related information for each %-code in the string, as per formatCharacter.

The general form is %<modifier><width><alternate><specifier>, where <modifier>, <width>, and <alternate> are optional.

`<modifier>`

glibc-style modifiers can be used before the specifier (here marked as z):

%-z: no padding
%_z: pad with spaces
%0z: pad with zeros
%^z: convert to upper case
%#z: convert to lower case (consistently, unlike glibc)

`<width>`

Width digits can also be used after any modifiers and before the specifier (here marked as z), for example:

%4z: pad to 4 characters (with default padding character)
%_12z: pad with spaces to 12 characters

`<alternate>`

An optional E character indicates an alternate formatting. Currently this only affects %Z and %z.

%Ez: alternate formatting

`<specifier>`

For all types (note these three are done by formatTime, not by formatCharacter):

%%: %
%t: tab
%n: newline

`TimeZone`

For TimeZone (and ZonedTime and UTCTime):

%z: timezone offset in the format ±HHMM
%Ez: timezone offset in the format ±HH:MM
%Z: timezone name (or else offset in the format ±HHMM)
%EZ: timezone name (or else offset in the format ±HH:MM)

`LocalTime`

For LocalTime (and ZonedTime and UTCTime and UniversalTime):

%c: as dateTimeFmt locale (e.g. %a %b %e %H:%M:%S %Z %Y)

`TimeOfDay`

For TimeOfDay (and LocalTime and ZonedTime and UTCTime and UniversalTime):

%R: same as %H:%M
%T: same as %H:%M:%S
%X: as timeFmt locale (e.g. %H:%M:%S)
%r: as time12Fmt locale (e.g. %I:%M:%S %p)
%P: day-half of day from (amPm locale), converted to lowercase, am, pm
%p: day-half of day from (amPm locale), AM, PM
%H: hour of day (24-hour), 0-padded to two chars, 00 - 23
%k: hour of day (24-hour), space-padded to two chars, 0 - 23
%I: hour of day-half (12-hour), 0-padded to two chars, 01 - 12
%l: hour of day-half (12-hour), space-padded to two chars, 1 - 12
%M: minute of hour, 0-padded to two chars, 00 - 59
%S: second of minute (without decimal part), 0-padded to two chars, 00 - 60
%q: picosecond of second, 0-padded to twelve chars, 000000000000 - 999999999999.
%Q: decimal point and fraction of second, up to 12 second decimals, without trailing zeros. For a whole number of seconds, %Q omits the decimal point unless padding is specified.

`UTCTime` and `ZonedTime`

For UTCTime and ZonedTime:

%s: number of whole seconds since the Unix epoch. For times before the Unix epoch, this is a negative number. Note that in %s.%q and %s%Q the decimals are positive, not negative. For example, 0.9 seconds before the Unix epoch is formatted as -1.1 with %s%Q.

`DayOfWeek`

For DayOfWeek (and Day and LocalTime and ZonedTime and UTCTime and UniversalTime):

%u: day of week number for Week Date format, 1 (= Monday) - 7 (= Sunday)
%w: day of week number, 0 (= Sunday) - 6 (= Saturday)
%a: day of week, short form (snd from wDays locale), Sun - Sat
%A: day of week, long form (fst from wDays locale), Sunday - Saturday

`Day`

For Day (and LocalTime and ZonedTime and UTCTime and UniversalTime):

%D: same as %m/%d/%y
%F: same as %Y-%m-%d
%x: as dateFmt locale (e.g. %m/%d/%y)
%Y: year, no padding. Note %0Y and %_Y pad to four chars
%y: year of century, 0-padded to two chars, 00 - 99
%C: century, no padding. Note %0C and %_C pad to two chars
%B: month name, long form (fst from months locale), January - December
%b, %h: month name, short form (snd from months locale), Jan - Dec
%m: month of year, 0-padded to two chars, 01 - 12
%d: day of month, 0-padded to two chars, 01 - 31
%e: day of month, space-padded to two chars, 1 - 31
%j: day of year, 0-padded to three chars, 001 - 366
%f: century for Week Date format, no padding. Note %0f and %_f pad to two chars
%V: week of year for Week Date format, 0-padded to two chars, 01 - 53
%U: week of year where weeks start on Sunday (as sundayStartWeek), 0-padded to two chars, 00 - 53
%W: week of year where weeks start on Monday (as mondayStartWeek), 0-padded to two chars, 00 - 53

Duration types

The specifiers for DiffTime, NominalDiffTime, CalendarDiffDays, and CalendarDiffTime are semantically separate from the other types. Specifiers on negative time differences will generally be negative (think rem rather than mod).

`NominalDiffTime` and `DiffTime`

Note that a "minute" of DiffTime is simply 60 SI seconds, rather than a minute of civil time. Use NominalDiffTime to work with civil time, ignoring any leap seconds.

For NominalDiffTime and DiffTime:

%w: total whole weeks
%d: total whole days
%D: whole days of week
%h: total whole hours
%H: whole hours of day
%m: total whole minutes
%M: whole minutes of hour
%s: total whole seconds
%Es: total seconds, with decimal point and up to <width> (default 12) decimal places, without trailing zeros. For a whole number of seconds, %Es omits the decimal point unless padding is specified.
%0Es: total seconds, with decimal point and <width> (default 12) decimal places.
%S: whole seconds of minute
%ES: seconds of minute, with decimal point and up to <width> (default 12) decimal places, without trailing zeros. For a whole number of seconds, %ES omits the decimal point unless padding is specified.
%0ES: seconds of minute as two digits, with decimal point and <width> (default 12) decimal places.

`CalendarDiffDays`

For CalendarDiffDays (and CalendarDiffTime):

%y: total years
%b: total months
%B: months of year
%w: total weeks, not including months
%d: total days, not including months
%D: days of week

`CalendarDiffTime`

For CalendarDiffTime:

%h: total hours, not including months
%H: hours of day
%m: total minutes, not including months
%M: minutes of hour
%s: total whole seconds, not including months
%Es: total seconds, not including months, with decimal point and up to <width> (default 12) decimal places, without trailing zeros. For a whole number of seconds, %Es omits the decimal point unless padding is specified.
%0Es: total seconds, not including months, with decimal point and <width> (default 12) decimal places.
%S: whole seconds of minute
%ES: seconds of minute, with decimal point and up to <width> (default 12) decimal places, without trailing zeros. For a whole number of seconds, %ES omits the decimal point unless padding is specified.
%0ES: seconds of minute as two digits, with decimal point and <width> (default 12) decimal places.

class FormatTime t #

Minimal complete definition

formatCharacter

Instances

Instances details

FormatTime DotNetTime
Instance details Defined in Data.Aeson.Types.Internal Methods formatCharacter :: Bool -> Char -> Maybe (FormatOptions -> DotNetTime -> String) #

class ParseTime t #

The class of types which can be parsed given a UNIX-style time format string.

Minimal complete definition

parseTimeSpecifier, buildTime

rfc822DateFormat :: String #

Format string according to RFC822.

iso8601DateFormat :: Maybe String -> String #

Construct format string according to ISO-8601.

The Maybe String argument allows to supply an optional time specification. E.g.:

iso8601DateFormat Nothing            == "%Y-%m-%d"           -- i.e. YYYY-MM-DD
iso8601DateFormat (Just "%H:%M:%S")  == "%Y-%m-%dT%H:%M:%S"  -- i.e. YYYY-MM-DDTHH:MM:SS

defaultTimeLocale :: TimeLocale #

Locale representing American usage.

knownTimeZones contains only the ten time-zones mentioned in RFC 822 sec. 5: "UT", "GMT", "EST", "EDT", "CST", "CDT", "MST", "MDT", "PST", "PDT". Note that the parsing functions will regardless parse "UTC", single-letter military time-zones, and +HHMM format.

data TimeLocale #

Constructors

TimeLocale
Fields wDays :: [(String, String)] full and abbreviated week days, starting with Sunday months :: [(String, String)] full and abbreviated months amPm :: (String, String) AM/PM symbols dateTimeFmt :: String formatting strings dateFmt :: String formatting strings timeFmt :: String formatting strings time12Fmt :: String formatting strings knownTimeZones :: [TimeZone] time zones known by name

Instances

Instances details

Eq TimeLocale
Instance details Defined in Data.Time.Format.Locale Methods (==) :: TimeLocale -> TimeLocale -> Bool # (/=) :: TimeLocale -> TimeLocale -> Bool #
Ord TimeLocale
Instance details Defined in Data.Time.Format.Locale Methods compare :: TimeLocale -> TimeLocale -> Ordering # (<) :: TimeLocale -> TimeLocale -> Bool # (<=) :: TimeLocale -> TimeLocale -> Bool # (>) :: TimeLocale -> TimeLocale -> Bool # (>=) :: TimeLocale -> TimeLocale -> Bool # max :: TimeLocale -> TimeLocale -> TimeLocale # min :: TimeLocale -> TimeLocale -> TimeLocale #
Show TimeLocale
Instance details Defined in Data.Time.Format.Locale Methods showsPrec :: Int -> TimeLocale -> ShowS # show :: TimeLocale -> String # showList :: [TimeLocale] -> ShowS #

localTimeToUT1 :: Rational -> LocalTime -> UniversalTime #

Get the UT1 time of a local time on a particular meridian (in degrees, positive is East).

ut1ToLocalTime :: Rational -> UniversalTime -> LocalTime #

Get the local time of a UT1 time on a particular meridian (in degrees, positive is East).

localTimeToUTC :: TimeZone -> LocalTime -> UTCTime #

Get the UTC time of a local time in a time zone.

utcToLocalTime :: TimeZone -> UTCTime -> LocalTime #

Get the local time of a UTC time in a time zone.

diffLocalTime :: LocalTime -> LocalTime -> NominalDiffTime #

diffLocalTime a b = a - b

addLocalTime :: NominalDiffTime -> LocalTime -> LocalTime #

addLocalTime a b = a + b

data LocalTime #

A simple day and time aggregate, where the day is of the specified parameter, and the time is a TimeOfDay. Conversion of this (as local civil time) to UTC depends on the time zone. Conversion of this (as local mean time) to UT1 depends on the longitude.

Constructors

LocalTime
Fields localDay :: Day localTimeOfDay :: TimeOfDay

Instances

Instances details

Eq LocalTime
Instance details Defined in Data.Time.LocalTime.Internal.LocalTime Methods (==) :: LocalTime -> LocalTime -> Bool # (/=) :: LocalTime -> LocalTime -> Bool #
Data LocalTime
Instance details Defined in Data.Time.LocalTime.Internal.LocalTime Methods gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> LocalTime -> c LocalTime # gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c LocalTime # toConstr :: LocalTime -> Constr # dataTypeOf :: LocalTime -> DataType # dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c LocalTime) # dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c LocalTime) # gmapT :: (forall b. Data b => b -> b) -> LocalTime -> LocalTime # gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> LocalTime -> r # gmapQr :: forall r r'. (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> LocalTime -> r # gmapQ :: (forall d. Data d => d -> u) -> LocalTime -> [u] # gmapQi :: Int -> (forall d. Data d => d -> u) -> LocalTime -> u # gmapM :: Monad m => (forall d. Data d => d -> m d) -> LocalTime -> m LocalTime # gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> LocalTime -> m LocalTime # gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> LocalTime -> m LocalTime #
Ord LocalTime
Instance details Defined in Data.Time.LocalTime.Internal.LocalTime Methods compare :: LocalTime -> LocalTime -> Ordering # (<) :: LocalTime -> LocalTime -> Bool # (<=) :: LocalTime -> LocalTime -> Bool # (>) :: LocalTime -> LocalTime -> Bool # (>=) :: LocalTime -> LocalTime -> Bool # max :: LocalTime -> LocalTime -> LocalTime # min :: LocalTime -> LocalTime -> LocalTime #
Show LocalTime
Instance details Defined in Data.Time.LocalTime.Internal.LocalTime Methods showsPrec :: Int -> LocalTime -> ShowS # show :: LocalTime -> String # showList :: [LocalTime] -> ShowS #
ToJSON LocalTime
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: LocalTime -> Value # toEncoding :: LocalTime -> Encoding # toJSONList :: [LocalTime] -> Value # toEncodingList :: [LocalTime] -> Encoding #
ToJSONKey LocalTime
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSONKey :: ToJSONKeyFunction LocalTime # toJSONKeyList :: ToJSONKeyFunction [LocalTime] #
FromJSON LocalTime
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser LocalTime # parseJSONList :: Value -> Parser [LocalTime] #
FromJSONKey LocalTime
Instance details Defined in Data.Aeson.Types.FromJSON Methods fromJSONKey :: FromJSONKeyFunction LocalTime # fromJSONKeyList :: FromJSONKeyFunction [LocalTime] #
NFData LocalTime
Instance details Defined in Data.Time.LocalTime.Internal.LocalTime Methods rnf :: LocalTime -> () #

timeOfDayToDayFraction :: TimeOfDay -> Rational #

Get the fraction of a day since midnight given a time of day.

dayFractionToTimeOfDay :: Rational -> TimeOfDay #

Get the time of day given the fraction of a day since midnight.

timeOfDayToTime :: TimeOfDay -> DiffTime #

Get the time since midnight for a given time of day.

timeToTimeOfDay :: DiffTime -> TimeOfDay #

Get the time of day given a time since midnight. Time more than 24h will be converted to leap-seconds.

localToUTCTimeOfDay :: TimeZone -> TimeOfDay -> (Integer, TimeOfDay) #

Convert a time of day in some timezone to a time of day in UTC, together with a day adjustment.

utcToLocalTimeOfDay :: TimeZone -> TimeOfDay -> (Integer, TimeOfDay) #

Convert a time of day in UTC to a time of day in some timezone, together with a day adjustment.

daysAndTimeOfDayToTime :: Integer -> TimeOfDay -> NominalDiffTime #

Convert a count of days and a time of day since midnight into a period of time.

timeToDaysAndTimeOfDay :: NominalDiffTime -> (Integer, TimeOfDay) #

Convert a period of time into a count of days and a time of day since midnight. The time of day will never have a leap second.

makeTimeOfDayValid :: Int -> Int -> Pico -> Maybe TimeOfDay #

midday :: TimeOfDay #

Hour twelve

midnight :: TimeOfDay #

Hour zero

data TimeOfDay #

Time of day as represented in hour, minute and second (with picoseconds), typically used to express local time of day.

Constructors

TimeOfDay
Fields todHour :: Int range 0 - 23 todMin :: Int range 0 - 59 todSec :: Pico Note that 0 <= `todSec` < 61, accomodating leap seconds. Any local minute may have a leap second, since leap seconds happen in all zones simultaneously

Instances

Instances details

Eq TimeOfDay
Instance details Defined in Data.Time.LocalTime.Internal.TimeOfDay Methods (==) :: TimeOfDay -> TimeOfDay -> Bool # (/=) :: TimeOfDay -> TimeOfDay -> Bool #
Data TimeOfDay
Instance details Defined in Data.Time.LocalTime.Internal.TimeOfDay Methods gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> TimeOfDay -> c TimeOfDay # gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c TimeOfDay # toConstr :: TimeOfDay -> Constr # dataTypeOf :: TimeOfDay -> DataType # dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c TimeOfDay) # dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c TimeOfDay) # gmapT :: (forall b. Data b => b -> b) -> TimeOfDay -> TimeOfDay # gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> TimeOfDay -> r # gmapQr :: forall r r'. (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> TimeOfDay -> r # gmapQ :: (forall d. Data d => d -> u) -> TimeOfDay -> [u] # gmapQi :: Int -> (forall d. Data d => d -> u) -> TimeOfDay -> u # gmapM :: Monad m => (forall d. Data d => d -> m d) -> TimeOfDay -> m TimeOfDay # gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> TimeOfDay -> m TimeOfDay # gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> TimeOfDay -> m TimeOfDay #
Ord TimeOfDay
Instance details Defined in Data.Time.LocalTime.Internal.TimeOfDay Methods compare :: TimeOfDay -> TimeOfDay -> Ordering # (<) :: TimeOfDay -> TimeOfDay -> Bool # (<=) :: TimeOfDay -> TimeOfDay -> Bool # (>) :: TimeOfDay -> TimeOfDay -> Bool # (>=) :: TimeOfDay -> TimeOfDay -> Bool # max :: TimeOfDay -> TimeOfDay -> TimeOfDay # min :: TimeOfDay -> TimeOfDay -> TimeOfDay #
Show TimeOfDay
Instance details Defined in Data.Time.LocalTime.Internal.TimeOfDay Methods showsPrec :: Int -> TimeOfDay -> ShowS # show :: TimeOfDay -> String # showList :: [TimeOfDay] -> ShowS #
ToJSON TimeOfDay
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: TimeOfDay -> Value # toEncoding :: TimeOfDay -> Encoding # toJSONList :: [TimeOfDay] -> Value # toEncodingList :: [TimeOfDay] -> Encoding #
ToJSONKey TimeOfDay
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSONKey :: ToJSONKeyFunction TimeOfDay # toJSONKeyList :: ToJSONKeyFunction [TimeOfDay] #
FromJSON TimeOfDay
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser TimeOfDay # parseJSONList :: Value -> Parser [TimeOfDay] #
FromJSONKey TimeOfDay
Instance details Defined in Data.Aeson.Types.FromJSON Methods fromJSONKey :: FromJSONKeyFunction TimeOfDay # fromJSONKeyList :: FromJSONKeyFunction [TimeOfDay] #
NFData TimeOfDay
Instance details Defined in Data.Time.LocalTime.Internal.TimeOfDay Methods rnf :: TimeOfDay -> () #
PersistField TimeOfDay
Instance details Defined in Database.Persist.Class.PersistField Methods toPersistValue :: TimeOfDay -> PersistValue # fromPersistValue :: PersistValue -> Either Text TimeOfDay #

getCurrentTimeZone :: IO TimeZone #

Get the current time-zone.

getTimeZone :: UTCTime -> IO TimeZone #

Get the local time-zone for a given time (varying as per summertime adjustments).

utc :: TimeZone #

The UTC time zone.

timeZoneOffsetString :: TimeZone -> String #

Text representing the offset of this timezone, such as "-0800" or "+0400" (like %z in formatTime).

timeZoneOffsetString' :: Maybe Char -> TimeZone -> String #

Text representing the offset of this timezone, such as "-0800" or "+0400" (like %z in formatTime), with arbitrary padding.

hoursToTimeZone :: Int -> TimeZone #

Create a nameless non-summer timezone for this number of hours.

minutesToTimeZone :: Int -> TimeZone #

Create a nameless non-summer timezone for this number of minutes.

data TimeZone #

A TimeZone is a whole number of minutes offset from UTC, together with a name and a "just for summer" flag.

Constructors

TimeZone
Fields timeZoneMinutes :: Int The number of minutes offset from UTC. Positive means local time will be later in the day than UTC. timeZoneSummerOnly :: Bool Is this time zone just persisting for the summer? timeZoneName :: String The name of the zone, typically a three- or four-letter acronym.

Instances

Instances details

Eq TimeZone
Instance details Defined in Data.Time.LocalTime.Internal.TimeZone Methods (==) :: TimeZone -> TimeZone -> Bool # (/=) :: TimeZone -> TimeZone -> Bool #
Data TimeZone
Instance details Defined in Data.Time.LocalTime.Internal.TimeZone Methods gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> TimeZone -> c TimeZone # gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c TimeZone # toConstr :: TimeZone -> Constr # dataTypeOf :: TimeZone -> DataType # dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c TimeZone) # dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c TimeZone) # gmapT :: (forall b. Data b => b -> b) -> TimeZone -> TimeZone # gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> TimeZone -> r # gmapQr :: forall r r'. (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> TimeZone -> r # gmapQ :: (forall d. Data d => d -> u) -> TimeZone -> [u] # gmapQi :: Int -> (forall d. Data d => d -> u) -> TimeZone -> u # gmapM :: Monad m => (forall d. Data d => d -> m d) -> TimeZone -> m TimeZone # gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> TimeZone -> m TimeZone # gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> TimeZone -> m TimeZone #
Ord TimeZone
Instance details Defined in Data.Time.LocalTime.Internal.TimeZone Methods compare :: TimeZone -> TimeZone -> Ordering # (<) :: TimeZone -> TimeZone -> Bool # (<=) :: TimeZone -> TimeZone -> Bool # (>) :: TimeZone -> TimeZone -> Bool # (>=) :: TimeZone -> TimeZone -> Bool # max :: TimeZone -> TimeZone -> TimeZone # min :: TimeZone -> TimeZone -> TimeZone #
Show TimeZone	This only shows the time zone name, or offset if the name is empty.
Instance details Defined in Data.Time.LocalTime.Internal.TimeZone Methods showsPrec :: Int -> TimeZone -> ShowS # show :: TimeZone -> String # showList :: [TimeZone] -> ShowS #
NFData TimeZone
Instance details Defined in Data.Time.LocalTime.Internal.TimeZone Methods rnf :: TimeZone -> () #

scaleCalendarDiffTime :: Integer -> CalendarDiffTime -> CalendarDiffTime #

Scale by a factor. Note that scaleCalendarDiffTime (-1) will not perfectly invert a duration, due to variable month lengths.

calendarTimeTime :: NominalDiffTime -> CalendarDiffTime #

calendarTimeDays :: CalendarDiffDays -> CalendarDiffTime #

data CalendarDiffTime #

Constructors

CalendarDiffTime
Fields ctMonths :: Integer ctTime :: NominalDiffTime

Instances

Instances details

Eq CalendarDiffTime
Instance details Defined in Data.Time.LocalTime.Internal.CalendarDiffTime Methods (==) :: CalendarDiffTime -> CalendarDiffTime -> Bool # (/=) :: CalendarDiffTime -> CalendarDiffTime -> Bool #
Data CalendarDiffTime	Since: time-1.9.2
Instance details Defined in Data.Time.LocalTime.Internal.CalendarDiffTime Methods gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> CalendarDiffTime -> c CalendarDiffTime # gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c CalendarDiffTime # toConstr :: CalendarDiffTime -> Constr # dataTypeOf :: CalendarDiffTime -> DataType # dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c CalendarDiffTime) # dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c CalendarDiffTime) # gmapT :: (forall b. Data b => b -> b) -> CalendarDiffTime -> CalendarDiffTime # gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> CalendarDiffTime -> r # gmapQr :: forall r r'. (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> CalendarDiffTime -> r # gmapQ :: (forall d. Data d => d -> u) -> CalendarDiffTime -> [u] # gmapQi :: Int -> (forall d. Data d => d -> u) -> CalendarDiffTime -> u # gmapM :: Monad m => (forall d. Data d => d -> m d) -> CalendarDiffTime -> m CalendarDiffTime # gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> CalendarDiffTime -> m CalendarDiffTime # gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> CalendarDiffTime -> m CalendarDiffTime #
Show CalendarDiffTime
Instance details Defined in Data.Time.LocalTime.Internal.CalendarDiffTime Methods showsPrec :: Int -> CalendarDiffTime -> ShowS # show :: CalendarDiffTime -> String # showList :: [CalendarDiffTime] -> ShowS #
Semigroup CalendarDiffTime	Additive
Instance details Defined in Data.Time.LocalTime.Internal.CalendarDiffTime Methods (<>) :: CalendarDiffTime -> CalendarDiffTime -> CalendarDiffTime # sconcat :: NonEmpty CalendarDiffTime -> CalendarDiffTime # stimes :: Integral b => b -> CalendarDiffTime -> CalendarDiffTime #
Monoid CalendarDiffTime	Additive
Instance details Defined in Data.Time.LocalTime.Internal.CalendarDiffTime Methods mempty :: CalendarDiffTime # mappend :: CalendarDiffTime -> CalendarDiffTime -> CalendarDiffTime # mconcat :: [CalendarDiffTime] -> CalendarDiffTime #
ToJSON CalendarDiffTime
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: CalendarDiffTime -> Value # toEncoding :: CalendarDiffTime -> Encoding # toJSONList :: [CalendarDiffTime] -> Value # toEncodingList :: [CalendarDiffTime] -> Encoding #
FromJSON CalendarDiffTime
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser CalendarDiffTime # parseJSONList :: Value -> Parser [CalendarDiffTime] #

diffUTCTime :: UTCTime -> UTCTime -> NominalDiffTime #

diffUTCTime a b = a - b

addUTCTime :: NominalDiffTime -> UTCTime -> UTCTime #

addUTCTime a b = a + b

getCurrentTime :: IO UTCTime #

Get the current UTCTime from the system clock.

newtype UniversalTime #

The Modified Julian Date is the day with the fraction of the day, measured from UT midnight. It's used to represent UT1, which is time as measured by the earth's rotation, adjusted for various wobbles.

Constructors

ModJulianDate
Fields getModJulianDate :: Rational

Instances

Instances details

Eq UniversalTime
Instance details Defined in Data.Time.Clock.Internal.UniversalTime Methods (==) :: UniversalTime -> UniversalTime -> Bool # (/=) :: UniversalTime -> UniversalTime -> Bool #
Data UniversalTime
Instance details Defined in Data.Time.Clock.Internal.UniversalTime Methods gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> UniversalTime -> c UniversalTime # gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c UniversalTime # toConstr :: UniversalTime -> Constr # dataTypeOf :: UniversalTime -> DataType # dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c UniversalTime) # dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c UniversalTime) # gmapT :: (forall b. Data b => b -> b) -> UniversalTime -> UniversalTime # gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> UniversalTime -> r # gmapQr :: forall r r'. (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> UniversalTime -> r # gmapQ :: (forall d. Data d => d -> u) -> UniversalTime -> [u] # gmapQi :: Int -> (forall d. Data d => d -> u) -> UniversalTime -> u # gmapM :: Monad m => (forall d. Data d => d -> m d) -> UniversalTime -> m UniversalTime # gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> UniversalTime -> m UniversalTime # gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> UniversalTime -> m UniversalTime #
Ord UniversalTime
Instance details Defined in Data.Time.Clock.Internal.UniversalTime Methods compare :: UniversalTime -> UniversalTime -> Ordering # (<) :: UniversalTime -> UniversalTime -> Bool # (<=) :: UniversalTime -> UniversalTime -> Bool # (>) :: UniversalTime -> UniversalTime -> Bool # (>=) :: UniversalTime -> UniversalTime -> Bool # max :: UniversalTime -> UniversalTime -> UniversalTime # min :: UniversalTime -> UniversalTime -> UniversalTime #
NFData UniversalTime
Instance details Defined in Data.Time.Clock.Internal.UniversalTime Methods rnf :: UniversalTime -> () #

getTime_resolution :: DiffTime #

The resolution of getSystemTime, getCurrentTime, getPOSIXTime

nominalDay :: NominalDiffTime #

One day in NominalDiffTime.

nominalDiffTimeToSeconds :: NominalDiffTime -> Pico #

Get the seconds in a NominalDiffTime.

Since: time-1.9.1

secondsToNominalDiffTime :: Pico -> NominalDiffTime #

Create a NominalDiffTime from a number of seconds.

Since: time-1.9.1

data NominalDiffTime #

This is a length of time, as measured by UTC. It has a precision of 10^-12 s.

Conversion functions will treat it as seconds. For example, (0.010 :: NominalDiffTime) corresponds to 10 milliseconds.

It ignores leap-seconds, so it's not necessarily a fixed amount of clock time. For instance, 23:00 UTC + 2 hours of NominalDiffTime = 01:00 UTC (+ 1 day), regardless of whether a leap-second intervened.

Instances

Instances details

Enum NominalDiffTime
Instance details Defined in Data.Time.Clock.Internal.NominalDiffTime Methods succ :: NominalDiffTime -> NominalDiffTime # pred :: NominalDiffTime -> NominalDiffTime # toEnum :: Int -> NominalDiffTime # fromEnum :: NominalDiffTime -> Int # enumFrom :: NominalDiffTime -> [NominalDiffTime] # enumFromThen :: NominalDiffTime -> NominalDiffTime -> [NominalDiffTime] # enumFromTo :: NominalDiffTime -> NominalDiffTime -> [NominalDiffTime] # enumFromThenTo :: NominalDiffTime -> NominalDiffTime -> NominalDiffTime -> [NominalDiffTime] #
Eq NominalDiffTime
Instance details Defined in Data.Time.Clock.Internal.NominalDiffTime Methods (==) :: NominalDiffTime -> NominalDiffTime -> Bool # (/=) :: NominalDiffTime -> NominalDiffTime -> Bool #
Fractional NominalDiffTime
Instance details Defined in Data.Time.Clock.Internal.NominalDiffTime Methods (/) :: NominalDiffTime -> NominalDiffTime -> NominalDiffTime # recip :: NominalDiffTime -> NominalDiffTime # fromRational :: Rational -> NominalDiffTime #
Data NominalDiffTime
Instance details Defined in Data.Time.Clock.Internal.NominalDiffTime Methods gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> NominalDiffTime -> c NominalDiffTime # gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c NominalDiffTime # toConstr :: NominalDiffTime -> Constr # dataTypeOf :: NominalDiffTime -> DataType # dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c NominalDiffTime) # dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c NominalDiffTime) # gmapT :: (forall b. Data b => b -> b) -> NominalDiffTime -> NominalDiffTime # gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> NominalDiffTime -> r # gmapQr :: forall r r'. (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> NominalDiffTime -> r # gmapQ :: (forall d. Data d => d -> u) -> NominalDiffTime -> [u] # gmapQi :: Int -> (forall d. Data d => d -> u) -> NominalDiffTime -> u # gmapM :: Monad m => (forall d. Data d => d -> m d) -> NominalDiffTime -> m NominalDiffTime # gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> NominalDiffTime -> m NominalDiffTime # gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> NominalDiffTime -> m NominalDiffTime #
Num NominalDiffTime
Instance details Defined in Data.Time.Clock.Internal.NominalDiffTime Methods (+) :: NominalDiffTime -> NominalDiffTime -> NominalDiffTime # (-) :: NominalDiffTime -> NominalDiffTime -> NominalDiffTime # (*) :: NominalDiffTime -> NominalDiffTime -> NominalDiffTime # negate :: NominalDiffTime -> NominalDiffTime # abs :: NominalDiffTime -> NominalDiffTime # signum :: NominalDiffTime -> NominalDiffTime # fromInteger :: Integer -> NominalDiffTime #
Ord NominalDiffTime
Instance details Defined in Data.Time.Clock.Internal.NominalDiffTime Methods compare :: NominalDiffTime -> NominalDiffTime -> Ordering # (<) :: NominalDiffTime -> NominalDiffTime -> Bool # (<=) :: NominalDiffTime -> NominalDiffTime -> Bool # (>) :: NominalDiffTime -> NominalDiffTime -> Bool # (>=) :: NominalDiffTime -> NominalDiffTime -> Bool # max :: NominalDiffTime -> NominalDiffTime -> NominalDiffTime # min :: NominalDiffTime -> NominalDiffTime -> NominalDiffTime #
Real NominalDiffTime
Instance details Defined in Data.Time.Clock.Internal.NominalDiffTime Methods toRational :: NominalDiffTime -> Rational #
RealFrac NominalDiffTime
Instance details Defined in Data.Time.Clock.Internal.NominalDiffTime Methods properFraction :: Integral b => NominalDiffTime -> (b, NominalDiffTime) # truncate :: Integral b => NominalDiffTime -> b # round :: Integral b => NominalDiffTime -> b # ceiling :: Integral b => NominalDiffTime -> b # floor :: Integral b => NominalDiffTime -> b #
Show NominalDiffTime
Instance details Defined in Data.Time.Clock.Internal.NominalDiffTime Methods showsPrec :: Int -> NominalDiffTime -> ShowS # show :: NominalDiffTime -> String # showList :: [NominalDiffTime] -> ShowS #
ToJSON NominalDiffTime
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: NominalDiffTime -> Value # toEncoding :: NominalDiffTime -> Encoding # toJSONList :: [NominalDiffTime] -> Value # toEncodingList :: [NominalDiffTime] -> Encoding #
FromJSON NominalDiffTime	This instance includes a bounds check to prevent maliciously large inputs to fill up the memory of the target system. You can newtype `Scientific` and provide your own instance using `withScientific` if you want to allow larger inputs.
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser NominalDiffTime # parseJSONList :: Value -> Parser [NominalDiffTime] #
NFData NominalDiffTime
Instance details Defined in Data.Time.Clock.Internal.NominalDiffTime Methods rnf :: NominalDiffTime -> () #

diffTimeToPicoseconds :: DiffTime -> Integer #

Get the number of picoseconds in a DiffTime.

picosecondsToDiffTime :: Integer -> DiffTime #

Create a DiffTime from a number of picoseconds.

secondsToDiffTime :: Integer -> DiffTime #

Create a DiffTime which represents an integral number of seconds.

data DiffTime #

This is a length of time, as measured by a clock. Conversion functions will treat it as seconds. It has a precision of 10^-12 s.

Instances

Instances details

Enum DiffTime
Instance details Defined in Data.Time.Clock.Internal.DiffTime Methods succ :: DiffTime -> DiffTime # pred :: DiffTime -> DiffTime # toEnum :: Int -> DiffTime # fromEnum :: DiffTime -> Int # enumFrom :: DiffTime -> [DiffTime] # enumFromThen :: DiffTime -> DiffTime -> [DiffTime] # enumFromTo :: DiffTime -> DiffTime -> [DiffTime] # enumFromThenTo :: DiffTime -> DiffTime -> DiffTime -> [DiffTime] #
Eq DiffTime
Instance details Defined in Data.Time.Clock.Internal.DiffTime Methods (==) :: DiffTime -> DiffTime -> Bool # (/=) :: DiffTime -> DiffTime -> Bool #
Fractional DiffTime
Instance details Defined in Data.Time.Clock.Internal.DiffTime Methods (/) :: DiffTime -> DiffTime -> DiffTime # recip :: DiffTime -> DiffTime # fromRational :: Rational -> DiffTime #
Data DiffTime
Instance details Defined in Data.Time.Clock.Internal.DiffTime Methods gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> DiffTime -> c DiffTime # gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c DiffTime # toConstr :: DiffTime -> Constr # dataTypeOf :: DiffTime -> DataType # dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c DiffTime) # dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c DiffTime) # gmapT :: (forall b. Data b => b -> b) -> DiffTime -> DiffTime # gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> DiffTime -> r # gmapQr :: forall r r'. (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> DiffTime -> r # gmapQ :: (forall d. Data d => d -> u) -> DiffTime -> [u] # gmapQi :: Int -> (forall d. Data d => d -> u) -> DiffTime -> u # gmapM :: Monad m => (forall d. Data d => d -> m d) -> DiffTime -> m DiffTime # gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> DiffTime -> m DiffTime # gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> DiffTime -> m DiffTime #
Num DiffTime
Instance details Defined in Data.Time.Clock.Internal.DiffTime Methods (+) :: DiffTime -> DiffTime -> DiffTime # (-) :: DiffTime -> DiffTime -> DiffTime # (*) :: DiffTime -> DiffTime -> DiffTime # negate :: DiffTime -> DiffTime # abs :: DiffTime -> DiffTime # signum :: DiffTime -> DiffTime # fromInteger :: Integer -> DiffTime #
Ord DiffTime
Instance details Defined in Data.Time.Clock.Internal.DiffTime Methods compare :: DiffTime -> DiffTime -> Ordering # (<) :: DiffTime -> DiffTime -> Bool # (<=) :: DiffTime -> DiffTime -> Bool # (>) :: DiffTime -> DiffTime -> Bool # (>=) :: DiffTime -> DiffTime -> Bool # max :: DiffTime -> DiffTime -> DiffTime # min :: DiffTime -> DiffTime -> DiffTime #
Real DiffTime
Instance details Defined in Data.Time.Clock.Internal.DiffTime Methods toRational :: DiffTime -> Rational #
RealFrac DiffTime
Instance details Defined in Data.Time.Clock.Internal.DiffTime Methods properFraction :: Integral b => DiffTime -> (b, DiffTime) # truncate :: Integral b => DiffTime -> b # round :: Integral b => DiffTime -> b # ceiling :: Integral b => DiffTime -> b # floor :: Integral b => DiffTime -> b #
Show DiffTime
Instance details Defined in Data.Time.Clock.Internal.DiffTime Methods showsPrec :: Int -> DiffTime -> ShowS # show :: DiffTime -> String # showList :: [DiffTime] -> ShowS #
ToJSON DiffTime
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: DiffTime -> Value # toEncoding :: DiffTime -> Encoding # toJSONList :: [DiffTime] -> Value # toEncodingList :: [DiffTime] -> Encoding #
FromJSON DiffTime	This instance includes a bounds check to prevent maliciously large inputs to fill up the memory of the target system. You can newtype `Scientific` and provide your own instance using `withScientific` if you want to allow larger inputs.
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser DiffTime # parseJSONList :: Value -> Parser [DiffTime] #
NFData DiffTime
Instance details Defined in Data.Time.Clock.Internal.DiffTime Methods rnf :: DiffTime -> () #

dayOfWeek :: Day -> DayOfWeek #

data DayOfWeek #

Constructors

Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
Sunday

Instances

Instances details

Enum DayOfWeek	"Circular", so for example `[Tuesday ..]` gives an endless sequence. Also: `fromEnum` gives [1 .. 7] for [Monday .. Sunday], and `toEnum` performs mod 7 to give a cycle of days.
Instance details Defined in Data.Time.Calendar.Week Methods succ :: DayOfWeek -> DayOfWeek # pred :: DayOfWeek -> DayOfWeek # toEnum :: Int -> DayOfWeek # fromEnum :: DayOfWeek -> Int # enumFrom :: DayOfWeek -> [DayOfWeek] # enumFromThen :: DayOfWeek -> DayOfWeek -> [DayOfWeek] # enumFromTo :: DayOfWeek -> DayOfWeek -> [DayOfWeek] # enumFromThenTo :: DayOfWeek -> DayOfWeek -> DayOfWeek -> [DayOfWeek] #
Eq DayOfWeek
Instance details Defined in Data.Time.Calendar.Week Methods (==) :: DayOfWeek -> DayOfWeek -> Bool # (/=) :: DayOfWeek -> DayOfWeek -> Bool #
Read DayOfWeek
Instance details Defined in Data.Time.Calendar.Week Methods readsPrec :: Int -> ReadS DayOfWeek # readList :: ReadS [DayOfWeek] # readPrec :: ReadPrec DayOfWeek # readListPrec :: ReadPrec [DayOfWeek] #
Show DayOfWeek
Instance details Defined in Data.Time.Calendar.Week Methods showsPrec :: Int -> DayOfWeek -> ShowS # show :: DayOfWeek -> String # showList :: [DayOfWeek] -> ShowS #
ToJSON DayOfWeek
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: DayOfWeek -> Value # toEncoding :: DayOfWeek -> Encoding # toJSONList :: [DayOfWeek] -> Value # toEncodingList :: [DayOfWeek] -> Encoding #
ToJSONKey DayOfWeek
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSONKey :: ToJSONKeyFunction DayOfWeek # toJSONKeyList :: ToJSONKeyFunction [DayOfWeek] #
FromJSON DayOfWeek
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser DayOfWeek # parseJSONList :: Value -> Parser [DayOfWeek] #
FromJSONKey DayOfWeek
Instance details Defined in Data.Aeson.Types.FromJSON Methods fromJSONKey :: FromJSONKeyFunction DayOfWeek # fromJSONKeyList :: FromJSONKeyFunction [DayOfWeek] #

diffGregorianDurationRollOver :: Day -> Day -> CalendarDiffDays #

Calendrical difference, with as many whole months as possible. Same as diffGregorianDurationClip for positive durations.

diffGregorianDurationClip :: Day -> Day -> CalendarDiffDays #

Calendrical difference, with as many whole months as possible

addGregorianDurationRollOver :: CalendarDiffDays -> Day -> Day #

Add months (rolling over to next month), then add days

addGregorianDurationClip :: CalendarDiffDays -> Day -> Day #

Add months (clipped to last day), then add days

addGregorianYearsRollOver :: Integer -> Day -> Day #

Add years, matching month and day, with Feb 29th rolled over to Mar 1st if necessary. For instance, 2004-02-29 + 2 years = 2006-03-01.

addGregorianYearsClip :: Integer -> Day -> Day #

Add years, matching month and day, with Feb 29th clipped to Feb 28th if necessary. For instance, 2004-02-29 + 2 years = 2006-02-28.

addGregorianMonthsRollOver :: Integer -> Day -> Day #

Add months, with days past the last day of the month rolling over to the next month. For instance, 2005-01-30 + 1 month = 2005-03-02.

addGregorianMonthsClip :: Integer -> Day -> Day #

Add months, with days past the last day of the month clipped to the last day. For instance, 2005-01-30 + 1 month = 2005-02-28.

gregorianMonthLength :: Integer -> Int -> Int #

The number of days in a given month according to the proleptic Gregorian calendar. First argument is year, second is month.

showGregorian :: Day -> String #

Show in ISO 8601 format (yyyy-mm-dd)

fromGregorianValid :: Integer -> Int -> Int -> Maybe Day #

Convert from proleptic Gregorian calendar. First argument is year, second month number (1-12), third day (1-31). Invalid values will return Nothing

fromGregorian :: Integer -> Int -> Int -> Day #

Convert from proleptic Gregorian calendar. First argument is year, second month number (1-12), third day (1-31). Invalid values will be clipped to the correct range, month first, then day.

toGregorian :: Day -> (Integer, Int, Int) #

Convert to proleptic Gregorian calendar. First element of result is year, second month number (1-12), third day (1-31).

isLeapYear :: Integer -> Bool #

Is this year a leap year according to the proleptic Gregorian calendar?

diffDays :: Day -> Day -> Integer #

addDays :: Integer -> Day -> Day #

newtype Day #

The Modified Julian Day is a standard count of days, with zero being the day 1858-11-17.

Constructors

ModifiedJulianDay
Fields toModifiedJulianDay :: Integer

Instances

Instances details

Enum Day
Instance details Defined in Data.Time.Calendar.Days Methods succ :: Day -> Day # pred :: Day -> Day # toEnum :: Int -> Day # fromEnum :: Day -> Int # enumFrom :: Day -> [Day] # enumFromThen :: Day -> Day -> [Day] # enumFromTo :: Day -> Day -> [Day] # enumFromThenTo :: Day -> Day -> Day -> [Day] #
Eq Day
Instance details Defined in Data.Time.Calendar.Days Methods (==) :: Day -> Day -> Bool # (/=) :: Day -> Day -> Bool #
Data Day
Instance details Defined in Data.Time.Calendar.Days Methods gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> Day -> c Day # gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c Day # toConstr :: Day -> Constr # dataTypeOf :: Day -> DataType # dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c Day) # dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c Day) # gmapT :: (forall b. Data b => b -> b) -> Day -> Day # gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> Day -> r # gmapQr :: forall r r'. (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> Day -> r # gmapQ :: (forall d. Data d => d -> u) -> Day -> [u] # gmapQi :: Int -> (forall d. Data d => d -> u) -> Day -> u # gmapM :: Monad m => (forall d. Data d => d -> m d) -> Day -> m Day # gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> Day -> m Day # gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> Day -> m Day #
Ord Day
Instance details Defined in Data.Time.Calendar.Days Methods compare :: Day -> Day -> Ordering # (<) :: Day -> Day -> Bool # (<=) :: Day -> Day -> Bool # (>) :: Day -> Day -> Bool # (>=) :: Day -> Day -> Bool # max :: Day -> Day -> Day # min :: Day -> Day -> Day #
Ix Day
Instance details Defined in Data.Time.Calendar.Days Methods range :: (Day, Day) -> [Day] # index :: (Day, Day) -> Day -> Int # unsafeIndex :: (Day, Day) -> Day -> Int # inRange :: (Day, Day) -> Day -> Bool # rangeSize :: (Day, Day) -> Int # unsafeRangeSize :: (Day, Day) -> Int #
ToJSON Day
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: Day -> Value # toEncoding :: Day -> Encoding # toJSONList :: [Day] -> Value # toEncodingList :: [Day] -> Encoding #
ToJSONKey Day
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSONKey :: ToJSONKeyFunction Day # toJSONKeyList :: ToJSONKeyFunction [Day] #
FromJSON Day
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser Day # parseJSONList :: Value -> Parser [Day] #
FromJSONKey Day
Instance details Defined in Data.Aeson.Types.FromJSON Methods fromJSONKey :: FromJSONKeyFunction Day # fromJSONKeyList :: FromJSONKeyFunction [Day] #
NFData Day
Instance details Defined in Data.Time.Calendar.Days Methods rnf :: Day -> () #
PathPiece Day
Instance details Defined in Web.PathPieces Methods fromPathPiece :: Text -> Maybe Day # toPathPiece :: Day -> Text #
PersistField Day
Instance details Defined in Database.Persist.Class.PersistField Methods toPersistValue :: Day -> PersistValue # fromPersistValue :: PersistValue -> Either Text Day #

scaleCalendarDiffDays :: Integer -> CalendarDiffDays -> CalendarDiffDays #

Scale by a factor. Note that scaleCalendarDiffDays (-1) will not perfectly invert a duration, due to variable month lengths.

calendarYear :: CalendarDiffDays #

calendarMonth :: CalendarDiffDays #

calendarWeek :: CalendarDiffDays #

calendarDay :: CalendarDiffDays #

data CalendarDiffDays #

Constructors

CalendarDiffDays
Fields cdMonths :: Integer cdDays :: Integer

Instances

Instances details

Eq CalendarDiffDays
Instance details Defined in Data.Time.Calendar.CalendarDiffDays Methods (==) :: CalendarDiffDays -> CalendarDiffDays -> Bool # (/=) :: CalendarDiffDays -> CalendarDiffDays -> Bool #
Data CalendarDiffDays	Since: time-1.9.2
Instance details Defined in Data.Time.Calendar.CalendarDiffDays Methods gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> CalendarDiffDays -> c CalendarDiffDays # gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c CalendarDiffDays # toConstr :: CalendarDiffDays -> Constr # dataTypeOf :: CalendarDiffDays -> DataType # dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c CalendarDiffDays) # dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c CalendarDiffDays) # gmapT :: (forall b. Data b => b -> b) -> CalendarDiffDays -> CalendarDiffDays # gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> CalendarDiffDays -> r # gmapQr :: forall r r'. (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> CalendarDiffDays -> r # gmapQ :: (forall d. Data d => d -> u) -> CalendarDiffDays -> [u] # gmapQi :: Int -> (forall d. Data d => d -> u) -> CalendarDiffDays -> u # gmapM :: Monad m => (forall d. Data d => d -> m d) -> CalendarDiffDays -> m CalendarDiffDays # gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> CalendarDiffDays -> m CalendarDiffDays # gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> CalendarDiffDays -> m CalendarDiffDays #
Show CalendarDiffDays
Instance details Defined in Data.Time.Calendar.CalendarDiffDays Methods showsPrec :: Int -> CalendarDiffDays -> ShowS # show :: CalendarDiffDays -> String # showList :: [CalendarDiffDays] -> ShowS #
Semigroup CalendarDiffDays	Additive
Instance details Defined in Data.Time.Calendar.CalendarDiffDays Methods (<>) :: CalendarDiffDays -> CalendarDiffDays -> CalendarDiffDays # sconcat :: NonEmpty CalendarDiffDays -> CalendarDiffDays # stimes :: Integral b => b -> CalendarDiffDays -> CalendarDiffDays #
Monoid CalendarDiffDays	Additive
Instance details Defined in Data.Time.Calendar.CalendarDiffDays Methods mempty :: CalendarDiffDays # mappend :: CalendarDiffDays -> CalendarDiffDays -> CalendarDiffDays # mconcat :: [CalendarDiffDays] -> CalendarDiffDays #
ToJSON CalendarDiffDays
Instance details Defined in Data.Aeson.Types.ToJSON Methods toJSON :: CalendarDiffDays -> Value # toEncoding :: CalendarDiffDays -> Encoding # toJSONList :: [CalendarDiffDays] -> Value # toEncodingList :: [CalendarDiffDays] -> Encoding #
FromJSON CalendarDiffDays
Instance details Defined in Data.Aeson.Types.FromJSON Methods parseJSON :: Value -> Parser CalendarDiffDays # parseJSONList :: Value -> Parser [CalendarDiffDays] #

type Application = Request -> (Response -> IO ResponseReceived) -> IO ResponseReceived #

The WAI application.

Note that, since WAI 3.0, this type is structured in continuation passing style to allow for proper safe resource handling. This was handled in the past via other means (e.g., ResourceT). As a demonstration:

app :: Application
app req respond = bracket_
    (putStrLn "Allocating scarce resource")
    (putStrLn "Cleaning up")
    (respond $ responseLBS status200 [] "Hello World")

newtype DBRunner site #

Constructors

DBRunner
Fields runDBRunner :: forall a. YesodDB site a -> HandlerFor site a

class YesodPersist site => YesodPersistRunner site where #

Since 1.2.0

Methods

getDBRunner :: HandlerFor site (DBRunner site, HandlerFor site ()) #

This function differs from runDB in that it returns a database runner function, as opposed to simply running a single action. This will usually mean that a connection is taken from a pool and then reused for each invocation. This can be useful for creating streaming responses; see runDBSource.

It additionally returns a cleanup function to free the connection. If your code finishes successfully, you must call this cleanup to indicate changes should be committed. Otherwise, for SQL backends at least, a rollback will be used instead.

Since 1.2.0

class Monad (YesodDB site) => YesodPersist site where #

Associated Types

type YesodPersistBackend site #

Methods

runDB :: YesodDB site a -> HandlerFor site a #

Allows you to execute database actions within Yesod Handlers. For databases that support it, code inside the action will run as an atomic transaction.

Example Usage

Expand

userId <- runDB $ do
  userId <- insert $ User "username" "email@example.com"
  insert_ $ UserPreferences userId True
  pure userId

type family YesodPersistBackend site #

type YesodDB site = ReaderT (YesodPersistBackend site) (HandlerFor site) #

defaultRunDB :: PersistConfig c => (site -> c) -> (site -> PersistConfigPool c) -> PersistConfigBackend c (HandlerFor site) a -> HandlerFor site a #

Helper for creating runDB.

Since 1.2.0

defaultGetDBRunner :: (IsSqlBackend backend, YesodPersistBackend site ~ backend) => (site -> Pool backend) -> HandlerFor site (DBRunner site, HandlerFor site ()) #

Helper for implementing getDBRunner.

Since 1.2.0

runDBSource :: YesodPersistRunner site => ConduitT () a (YesodDB site) () -> ConduitT () a (HandlerFor site) () #

Like runDB, but transforms a Source. See respondSourceDB for an example, practical use case.

Since 1.2.0

respondSourceDB :: YesodPersistRunner site => ContentType -> ConduitT () (Flush Builder) (YesodDB site) () -> HandlerFor site TypedContent #

Extends respondSource to create a streaming database response body.

get404 :: forall (m :: Type -> Type) backend val. (MonadIO m, PersistStoreRead backend, PersistRecordBackend val backend) => Key val -> ReaderT backend m val #

Get the given entity by ID, or return a 404 not found if it doesn't exist.

getBy404 :: forall backend val (m :: Type -> Type). (PersistUniqueRead backend, PersistRecordBackend val backend, MonadIO m) => Unique val -> ReaderT backend m (Entity val) #

Get the given entity by unique key, or return a 404 not found if it doesn't exist.

insert400 :: forall (m :: Type -> Type) backend val. (MonadIO m, PersistUniqueWrite backend, PersistRecordBackend val backend) => val -> ReaderT backend m (Key val) #

Create a new record in the database, returning an automatically created key, or raise a 400 bad request if a uniqueness constraint is violated.

Since: yesod-persistent-1.4.1

insert400_ :: forall (m :: Type -> Type) backend val. (MonadIO m, PersistUniqueWrite backend, PersistRecordBackend val backend) => val -> ReaderT backend m () #

Same as insert400, but doesn’t return a key.

Since: yesod-persistent-1.4.1

data FormMessage #

Instances

Instances details

Eq FormMessage
Instance details Defined in Yesod.Form.Types Methods (==) :: FormMessage -> FormMessage -> Bool # (/=) :: FormMessage -> FormMessage -> Bool #
Read FormMessage
Instance details Defined in Yesod.Form.Types Methods readsPrec :: Int -> ReadS FormMessage # readList :: ReadS [FormMessage] # readPrec :: ReadPrec FormMessage # readListPrec :: ReadPrec [FormMessage] #
Show FormMessage
Instance details Defined in Yesod.Form.Types Methods showsPrec :: Int -> FormMessage -> ShowS # show :: FormMessage -> String # showList :: [FormMessage] -> ShowS #
RenderMessage App FormMessage Source #
Instance details Defined in Hledger.Web.Foundation Methods renderMessage :: App -> [Lang] -> FormMessage -> Text #

data Field (m :: Type -> Type) a #

Constructors

Field
Fields fieldParse :: [Text] -> [FileInfo] -> m (Either (SomeMessage (HandlerSite m)) (Maybe a)) fieldView :: FieldViewFunc m a fieldEnctype :: Enctype

type FieldViewFunc (m :: Type -> Type) a #

Arguments

= Text	ID
-> Text	Name
-> [(Text, Text)]	Attributes
-> Either Text a	Either (invalid text) or (legitimate result)
-> Bool	Required?
-> WidgetFor (HandlerSite m) ()

data FieldView site #

Constructors

FieldView
Fields fvLabel :: Markup fvTooltip :: Maybe Markup fvId :: Text fvInput :: WidgetFor site () fvErrors :: Maybe Markup fvRequired :: Bool

data FieldSettings master #

Constructors

FieldSettings
Fields fsLabel :: SomeMessage master fsTooltip :: Maybe (SomeMessage master) fsId :: Maybe Text fsName :: Maybe Text fsAttrs :: [(Text, Text)]

Instances

Instances details

IsString (FieldSettings a)
Instance details Defined in Yesod.Form.Types Methods fromString :: String -> FieldSettings a #

newtype AForm (m :: Type -> Type) a #

Constructors

AForm
Fields unAForm :: (HandlerSite m, [Text]) -> Maybe (Env, FileEnv) -> Ints -> m (FormResult a, [FieldView (HandlerSite m)] -> [FieldView (HandlerSite m)], Ints, Enctype)

Instances

Instances details

MonadTrans AForm
Instance details Defined in Yesod.Form.Types Methods lift :: Monad m => m a -> AForm m a #
Monad m => Functor (AForm m)
Instance details Defined in Yesod.Form.Types Methods fmap :: (a -> b) -> AForm m a -> AForm m b # (<$) :: a -> AForm m b -> AForm m a #
Monad m => Applicative (AForm m)
Instance details Defined in Yesod.Form.Types Methods pure :: a -> AForm m a # (<>) :: AForm m (a -> b) -> AForm m a -> AForm m b # liftA2 :: (a -> b -> c) -> AForm m a -> AForm m b -> AForm m c # (>) :: AForm m a -> AForm m b -> AForm m b # (<*) :: AForm m a -> AForm m b -> AForm m a #
(Monad m, Semigroup a) => Semigroup (AForm m a)
Instance details Defined in Yesod.Form.Types Methods (<>) :: AForm m a -> AForm m a -> AForm m a # sconcat :: NonEmpty (AForm m a) -> AForm m a # stimes :: Integral b => b -> AForm m a -> AForm m a #
(Monad m, Monoid a) => Monoid (AForm m a)
Instance details Defined in Yesod.Form.Types Methods mempty :: AForm m a # mappend :: AForm m a -> AForm m a -> AForm m a # mconcat :: [AForm m a] -> AForm m a #

type MForm (m :: Type -> Type) a = RWST (Maybe (Env, FileEnv), HandlerSite m, [Lang]) Enctype Ints m a #

type WForm (m :: Type -> Type) a = MForm (WriterT [FieldView (HandlerSite m)] m) a #

MForm variant stacking a WriterT. The following code example using a monadic form MForm:

formToAForm $ do
  (field1F, field1V) <- mreq textField MsgField1 Nothing
  (field2F, field2V) <- mreq (checkWith field1F textField) MsgField2 Nothing
  (field3F, field3V) <- mreq (checkWith field1F textField) MsgField3 Nothing
  return
    ( MyForm <$> field1F <*> field2F <*> field3F
    , [field1V, field2V, field3V]
    )

Could be rewritten as follows using WForm:

wFormToAForm $ do
  field1F <- wreq textField MsgField1 Nothing
  field2F <- wreq (checkWith field1F textField) MsgField2 Nothing
  field3F <- wreq (checkWith field1F textField) MsgField3 Nothing
  return $ MyForm <$> field1F <*> field2F <*> field3F

Since: yesod-form-1.4.14

type FileEnv = Map Text [FileInfo] #

type Env = Map Text [Text] #

data Ints #

Constructors

IntCons Int Ints
IntSingle Int

Instances

Instances details

Show Ints
Instance details Defined in Yesod.Form.Types Methods showsPrec :: Int -> Ints -> ShowS # show :: Ints -> String # showList :: [Ints] -> ShowS #

data Enctype #

The encoding type required by a form. The ToHtml instance produces values that can be inserted directly into HTML.

Constructors

UrlEncoded
Multipart

Instances

Instances details

Bounded Enctype
Instance details Defined in Yesod.Form.Types Methods minBound :: Enctype # maxBound :: Enctype #
Enum Enctype
Instance details Defined in Yesod.Form.Types Methods succ :: Enctype -> Enctype # pred :: Enctype -> Enctype # toEnum :: Int -> Enctype # fromEnum :: Enctype -> Int # enumFrom :: Enctype -> [Enctype] # enumFromThen :: Enctype -> Enctype -> [Enctype] # enumFromTo :: Enctype -> Enctype -> [Enctype] # enumFromThenTo :: Enctype -> Enctype -> Enctype -> [Enctype] #
Eq Enctype
Instance details Defined in Yesod.Form.Types Methods (==) :: Enctype -> Enctype -> Bool # (/=) :: Enctype -> Enctype -> Bool #
Semigroup Enctype
Instance details Defined in Yesod.Form.Types Methods (<>) :: Enctype -> Enctype -> Enctype # sconcat :: NonEmpty Enctype -> Enctype # stimes :: Integral b => b -> Enctype -> Enctype #
Monoid Enctype
Instance details Defined in Yesod.Form.Types Methods mempty :: Enctype # mappend :: Enctype -> Enctype -> Enctype # mconcat :: [Enctype] -> Enctype #
ToValue Enctype
Instance details Defined in Yesod.Form.Types Methods toValue :: Enctype -> AttributeValue # preEscapedToValue :: Enctype -> AttributeValue #
ToMarkup Enctype
Instance details Defined in Yesod.Form.Types Methods toMarkup :: Enctype -> Markup # preEscapedToMarkup :: Enctype -> Markup #

data FormResult a #

A form can produce three different results: there was no data available, the data was invalid, or there was a successful parse.

The Applicative instance will concatenate the failure messages in two FormResults. The Alternative instance will choose FormFailure before FormSuccess, and FormMissing last of all.

Constructors

FormMissing
FormFailure [Text]
FormSuccess a

Instances

Instances details

Functor FormResult
Instance details Defined in Yesod.Form.Types Methods fmap :: (a -> b) -> FormResult a -> FormResult b # (<$) :: a -> FormResult b -> FormResult a #
Applicative FormResult
Instance details Defined in Yesod.Form.Types Methods pure :: a -> FormResult a # (<>) :: FormResult (a -> b) -> FormResult a -> FormResult b # liftA2 :: (a -> b -> c) -> FormResult a -> FormResult b -> FormResult c # (>) :: FormResult a -> FormResult b -> FormResult b # (<*) :: FormResult a -> FormResult b -> FormResult a #
Foldable FormResult	Since: yesod-form-1.4.5
Instance details Defined in Yesod.Form.Types Methods fold :: Monoid m => FormResult m -> m # foldMap :: Monoid m => (a -> m) -> FormResult a -> m # foldMap' :: Monoid m => (a -> m) -> FormResult a -> m # foldr :: (a -> b -> b) -> b -> FormResult a -> b # foldr' :: (a -> b -> b) -> b -> FormResult a -> b # foldl :: (b -> a -> b) -> b -> FormResult a -> b # foldl' :: (b -> a -> b) -> b -> FormResult a -> b # foldr1 :: (a -> a -> a) -> FormResult a -> a # foldl1 :: (a -> a -> a) -> FormResult a -> a # toList :: FormResult a -> [a] # null :: FormResult a -> Bool # length :: FormResult a -> Int # elem :: Eq a => a -> FormResult a -> Bool # maximum :: Ord a => FormResult a -> a # minimum :: Ord a => FormResult a -> a # sum :: Num a => FormResult a -> a # product :: Num a => FormResult a -> a #
Traversable FormResult	Since: yesod-form-1.4.5
Instance details Defined in Yesod.Form.Types Methods traverse :: Applicative f => (a -> f b) -> FormResult a -> f (FormResult b) # sequenceA :: Applicative f => FormResult (f a) -> f (FormResult a) # mapM :: Monad m => (a -> m b) -> FormResult a -> m (FormResult b) # sequence :: Monad m => FormResult (m a) -> m (FormResult a) #
Alternative FormResult	Since: yesod-form-1.4.15
Instance details Defined in Yesod.Form.Types Methods empty :: FormResult a # (<\|>) :: FormResult a -> FormResult a -> FormResult a # some :: FormResult a -> FormResult [a] # many :: FormResult a -> FormResult [a] #
Eq a => Eq (FormResult a)
Instance details Defined in Yesod.Form.Types Methods (==) :: FormResult a -> FormResult a -> Bool # (/=) :: FormResult a -> FormResult a -> Bool #
Show a => Show (FormResult a)
Instance details Defined in Yesod.Form.Types Methods showsPrec :: Int -> FormResult a -> ShowS # show :: FormResult a -> String # showList :: [FormResult a] -> ShowS #
Semigroup m => Semigroup (FormResult m)
Instance details Defined in Yesod.Form.Types Methods (<>) :: FormResult m -> FormResult m -> FormResult m # sconcat :: NonEmpty (FormResult m) -> FormResult m # stimes :: Integral b => b -> FormResult m -> FormResult m #
Monoid m => Monoid (FormResult m)
Instance details Defined in Yesod.Form.Types Methods mempty :: FormResult m # mappend :: FormResult m -> FormResult m -> FormResult m # mconcat :: [FormResult m] -> FormResult m #

newtype FormInput (m :: Type -> Type) a #

Type for a form which parses a value of type a with the base monad m (usually your Handler). Can compose this using its Applicative instance.

Constructors

FormInput
Fields unFormInput :: HandlerSite m -> [Text] -> Env -> FileEnv -> m (Either DText a)

Instances

Instances details

Monad m => Functor (FormInput m)
Instance details Defined in Yesod.Form.Input Methods fmap :: (a -> b) -> FormInput m a -> FormInput m b # (<$) :: a -> FormInput m b -> FormInput m a #
Monad m => Applicative (FormInput m)
Instance details Defined in Yesod.Form.Input Methods pure :: a -> FormInput m a # (<>) :: FormInput m (a -> b) -> FormInput m a -> FormInput m b # liftA2 :: (a -> b -> c) -> FormInput m a -> FormInput m b -> FormInput m c # (>) :: FormInput m a -> FormInput m b -> FormInput m b # (<*) :: FormInput m a -> FormInput m b -> FormInput m a #

ireq #

Arguments

:: forall (m :: Type -> Type) a. (Monad m, RenderMessage (HandlerSite m) FormMessage)
=> Field m a
-> Text	name of the field
-> FormInput m a

Promote a Field into a FormInput, requiring that the value be present and valid.

iopt :: forall (m :: Type -> Type) a. Monad m => Field m a -> Text -> FormInput m (Maybe a) #

Promote a Field into a FormInput, with its presence being optional. If the value is present but does not parse correctly, the form will still fail.

runInputGet :: MonadHandler m => FormInput m a -> m a #

Run a FormInput on the GET parameters (i.e., query string). If parsing fails, calls invalidArgs.

runInputGetResult :: MonadHandler m => FormInput m a -> m (FormResult a) #

Run a FormInput on the GET parameters (i.e., query string). Does not throw exceptions on failure.

Since 1.4.1

runInputPost :: MonadHandler m => FormInput m a -> m a #

Run a FormInput on the POST parameters (i.e., request body). If parsing fails, calls invalidArgs.

runInputPostResult :: MonadHandler m => FormInput m a -> m (FormResult a) #

Run a FormInput on the POST parameters (i.e., request body). Does not throw exceptions on failure.

type FormRender (m :: Type -> Type) a = AForm m a -> Markup -> MForm m (FormResult a, WidgetFor (HandlerSite m) ()) #

newFormIdent :: forall (m :: Type -> Type). Monad m => MForm m Text #

Get a unique identifier.

formToAForm :: forall (m :: Type -> Type) site a. (HandlerSite m ~ site, Monad m) => MForm m (FormResult a, [FieldView site]) -> AForm m a #

aFormToForm :: forall (m :: Type -> Type) site a. (Monad m, HandlerSite m ~ site) => AForm m a -> MForm m (FormResult a, [FieldView site] -> [FieldView site]) #

askParams :: forall (m :: Type -> Type). Monad m => MForm m (Maybe Env) #

askFiles :: forall (m :: Type -> Type). Monad m => MForm m (Maybe FileEnv) #

wreq #

Arguments

:: forall site (m :: Type -> Type) a. (RenderMessage site FormMessage, HandlerSite m ~ site, MonadHandler m)
=> Field m a	form field
-> FieldSettings site	settings for this field
-> Maybe a	optional default value
-> WForm m (FormResult a)

Converts a form field into monadic form WForm. This field requires a value and will return FormFailure if left empty.

Since: yesod-form-1.4.14

wreqMsg #

Arguments

:: forall site msg (m :: Type -> Type) a. (RenderMessage site msg, HandlerSite m ~ site, MonadHandler m)
=> Field m a	form field
-> FieldSettings site	settings for this field
-> msg	message to use in case value is Nothing
-> Maybe a	optional default value
-> WForm m (FormResult a)

Same as wreq but with your own message to be rendered in case the value is not provided.

This is useful when you have several required fields on the page and you want to differentiate between which fields were left blank. Otherwise the user sees "Value is required" multiple times, which is ambiguous.

Since: yesod-form-1.6.7

wopt #

Arguments

:: forall (m :: Type -> Type) site a. (MonadHandler m, HandlerSite m ~ site)
=> Field m a	form field
-> FieldSettings site	settings for this field
-> Maybe (Maybe a)	optional default value
-> WForm m (FormResult (Maybe a))

Converts a form field into monadic form WForm. This field is optional, i.e. if filled in, it returns 'Just a', if left empty, it returns Nothing. Arguments are the same as for wreq (apart from type of default value).

Since: yesod-form-1.4.14

wFormToAForm #

Arguments

:: forall (m :: Type -> Type) a. MonadHandler m
=> WForm m (FormResult a)	input form
-> AForm m a	output form

Converts a monadic form WForm into an applicative form AForm.

Since: yesod-form-1.4.14

wFormToMForm #

Arguments

:: forall (m :: Type -> Type) site a. (MonadHandler m, HandlerSite m ~ site)
=> WForm m a	input form
-> MForm m (a, [FieldView site])	output form

Converts a monadic form WForm into another monadic form MForm.

Since: yesod-form-1.4.14

mFormToWForm #

Arguments

:: forall (m :: Type -> Type) site a. (MonadHandler m, HandlerSite m ~ site)
=> MForm m (a, FieldView site)	input form
-> WForm m a	output form

Converts a monadic form MForm into another monadic form WForm.

Since: yesod-form-1.4.14

mreq #

Arguments

:: forall site (m :: Type -> Type) a. (RenderMessage site FormMessage, HandlerSite m ~ site, MonadHandler m)
=> Field m a	form field
-> FieldSettings site	settings for this field
-> Maybe a	optional default value
-> MForm m (FormResult a, FieldView site)

Converts a form field into monadic form. This field requires a value and will return FormFailure if left empty.

mreqMsg #

Arguments

:: forall site msg (m :: Type -> Type) a. (RenderMessage site msg, HandlerSite m ~ site, MonadHandler m)
=> Field m a	form field
-> FieldSettings site	settings for this field
-> msg	Message to use in case value is Nothing
-> Maybe a	optional default value
-> MForm m (FormResult a, FieldView site)

Same as mreq but with your own message to be rendered in case the value is not provided.

This is useful when you have several required fields on the page and you want to differentiate between which fields were left blank. Otherwise the user sees "Value is required" multiple times, which is ambiguous.

Since: yesod-form-1.6.6

mopt :: forall site (m :: Type -> Type) a. (site ~ HandlerSite m, MonadHandler m) => Field m a -> FieldSettings site -> Maybe (Maybe a) -> MForm m (FormResult (Maybe a), FieldView site) #

Converts a form field into monadic form. This field is optional, i.e. if filled in, it returns 'Just a', if left empty, it returns Nothing. Arguments are the same as for mreq (apart from type of default value).

areq #

Arguments

:: forall site (m :: Type -> Type) a. (RenderMessage site FormMessage, HandlerSite m ~ site, MonadHandler m)
=> Field m a	form field
-> FieldSettings site	settings for this field
-> Maybe a	optional default value
-> AForm m a

Applicative equivalent of mreq.

areqMsg #

Arguments

:: forall site msg (m :: Type -> Type) a. (RenderMessage site msg, HandlerSite m ~ site, MonadHandler m)
=> Field m a	form field
-> FieldSettings site	settings for this field
-> msg	message to use in case value is Nothing
-> Maybe a	optional default value
-> AForm m a

Same as areq but with your own message to be rendered in case the value is not provided.

This is useful when you have several required fields on the page and you want to differentiate between which fields were left blank. Otherwise the user sees "Value is required" multiple times, which is ambiguous.

Since: yesod-form-1.6.7

aopt :: forall (m :: Type -> Type) a. MonadHandler m => Field m a -> FieldSettings (HandlerSite m) -> Maybe (Maybe a) -> AForm m (Maybe a) #

Applicative equivalent of mopt.

runFormPost :: (RenderMessage (HandlerSite m) FormMessage, MonadResource m, MonadHandler m) => (Markup -> MForm m (FormResult a, xml)) -> m ((FormResult a, xml), Enctype) #

This function is used to both initially render a form and to later extract results from it. Note that, due to CSRF protection and a few other issues, forms submitted via GET and POST are slightly different. As such, be sure to call the relevant function based on how the form will be submitted, not the current request method.

For example, a common case is displaying a form on a GET request and having the form submit to a POST page. In such a case, both the GET and POST handlers should use runFormPost.

generateFormPost :: (RenderMessage (HandlerSite m) FormMessage, MonadHandler m) => (Markup -> MForm m (FormResult a, xml)) -> m (xml, Enctype) #

Similar to runFormPost, except it always ignores the currently available environment. This is necessary in cases like a wizard UI, where a single page will both receive and incoming form and produce a new, blank form. For general usage, you can stick with runFormPost.

runFormPostNoToken :: MonadHandler m => (Markup -> MForm m a) -> m (a, Enctype) #

runFormGet :: MonadHandler m => (Markup -> MForm m a) -> m (a, Enctype) #

generateFormGet' :: MonadHandler m => (Markup -> MForm m (FormResult a, xml)) -> m (xml, Enctype) #

Since 1.3.11

generateFormGet :: MonadHandler m => (Markup -> MForm m a) -> m (a, Enctype) #

identifyForm #

Arguments

:: forall (m :: Type -> Type) a. Monad m
=> Text	Form identification string.
-> (Markup -> MForm m (FormResult a, WidgetFor (HandlerSite m) ()))
-> Markup
-> MForm m (FormResult a, WidgetFor (HandlerSite m) ())

Creates a hidden field on the form that identifies it. This identification is then used to distinguish between missing and wrong form data when a single handler contains more than one form.

For instance, if you have the following code on your handler:

((fooRes, fooWidget), fooEnctype) <- runFormPost fooForm
((barRes, barWidget), barEnctype) <- runFormPost barForm

Then replace it with

((fooRes, fooWidget), fooEnctype) <- runFormPost $ identifyForm "foo" fooForm
((barRes, barWidget), barEnctype) <- runFormPost $ identifyForm "bar" barForm

Note that it's your responsibility to ensure that the identification strings are unique (using the same one twice on a single handler will not generate any errors). This allows you to create a variable number of forms and still have them work even if their number or order change between the HTML generation and the form submission.

renderTable :: forall (m :: Type -> Type) a. Monad m => FormRender m a #

Render a form into a series of tr tags. Note that, in order to allow you to add extra rows to the table, this function does not wrap up the resulting HTML in a table tag; you must do that yourself.

renderDivs :: forall (m :: Type -> Type) a. Monad m => FormRender m a #

render a field inside a div

renderDivsNoLabels :: forall (m :: Type -> Type) a. Monad m => FormRender m a #

render a field inside a div, not displaying any label

renderBootstrap2 :: forall (m :: Type -> Type) a. Monad m => FormRender m a #

Render a form using Bootstrap v2-friendly shamlet syntax. If you're using Bootstrap v3, then you should use the functions from module Yesod.Form.Bootstrap3.

Sample Hamlet:

 <form .form-horizontal method=post action=@{ActionR} enctype=#{formEnctype}>
   <fieldset>
     <legend>_{MsgLegend}
     $case result
       $of FormFailure reasons
         $forall reason <- reasons
           <div .alert .alert-error>#{reason}
       $of _
     ^{formWidget}
     <div .form-actions>
       <input .btn .primary type=submit value=_{MsgSubmit}>

Since 1.3.14

renderBootstrap :: forall (m :: Type -> Type) a. Monad m => FormRender m a #

Deprecated synonym for renderBootstrap2.

check :: forall (m :: Type -> Type) msg a. (Monad m, RenderMessage (HandlerSite m) msg) => (a -> Either msg a) -> Field m a -> Field m a #

checkBool :: forall (m :: Type -> Type) msg a. (Monad m, RenderMessage (HandlerSite m) msg) => (a -> Bool) -> msg -> Field m a -> Field m a #

Return the given error message if the predicate is false.

checkM :: (Monad m, RenderMessage (HandlerSite m) msg) => (a -> m (Either msg a)) -> Field m a -> Field m a #

checkMMap :: (Monad m, RenderMessage (HandlerSite m) msg) => (a -> m (Either msg b)) -> (b -> a) -> Field m a -> Field m b #

Same as checkM, but modifies the datatype.

In order to make this work, you must provide a function to convert back from the new datatype to the old one (the second argument to this function).

Since 1.1.2

customErrorMessage :: forall (m :: Type -> Type) a. Monad m => SomeMessage (HandlerSite m) -> Field m a -> Field m a #

Allows you to overwrite the error message on parse error.

fieldSettingsLabel :: RenderMessage site msg => msg -> FieldSettings site #

Generate a FieldSettings from the given label.

parseHelper :: (Monad m, RenderMessage site FormMessage) => (Text -> Either FormMessage a) -> [Text] -> [FileInfo] -> m (Either (SomeMessage site) (Maybe a)) #

A helper function for creating custom fields.

This is intended to help with the common case where a single input value is required, such as when parsing a text field.

Since 1.1

parseHelperGen :: (Monad m, RenderMessage site msg) => (Text -> Either msg a) -> [Text] -> [FileInfo] -> m (Either (SomeMessage site) (Maybe a)) #

A generalized version of parseHelper, allowing any type for the message indicating a bad parse.

Since 1.3.6

convertField :: forall (m :: Type -> Type) a b. Functor m => (a -> b) -> (b -> a) -> Field m a -> Field m b #

Since a Field cannot be a Functor, it is not obvious how to "reuse" a Field on a newtype or otherwise equivalent type. This function allows you to convert a Field m a to a Field m b assuming you provide a bidirectional conversion between the two, through the first two functions.

A simple example:

import Data.Monoid
sumField :: (Functor m, Monad m, RenderMessage (HandlerSite m) FormMessage) => Field m (Sum Int)
sumField = convertField Sum getSum intField

Another example, not using a newtype, but instead creating a Lazy Text field:

import qualified Data.Text.Lazy as TL
TextField :: (Functor m, Monad m, RenderMessage (HandlerSite m) FormMessage) => Field m TL.Text
lazyTextField = convertField TL.fromStrict TL.toStrict textField

Since 1.3.16

removeClass #

Arguments

:: Text	The class to remove
-> [(Text, Text)]	List of existing `fsAttrs`
-> [(Text, Text)]

Removes a CSS class from the fsAttrs in a FieldSettings.

Examples

Expand

>>> removeClass "form-control" [("class","form-control login-form"),("id","home-login")]
[("class","  login-form"),("id","home-login")]

Since: yesod-form-1.6.2

addClass #

Arguments

:: Text	The class to add
-> [(Text, Text)]	List of existing `fsAttrs`
-> [(Text, Text)]

Adds a CSS class to the fsAttrs in a FieldSettings.

Examples

Expand

>>> addClass "login-form" [("class", "form-control"), ("id", "home-login")]
[("class","form-control login-form"),("id","home-login")]

Since: yesod-form-1.6.2

data Option a #

Constructors

Option
Fields optionDisplay :: Text The user-facing label. optionInternalValue :: a The Haskell value being selected. optionExternalValue :: Text The representation of this value stored in the form.

Instances

Instances details

Functor Option	Since: yesod-form-1.4.6
Instance details Defined in Yesod.Form.Fields Methods fmap :: (a -> b) -> Option a -> Option b # (<$) :: a -> Option b -> Option a #

data OptionList a #

A structure holding a list of options. Typically you can use a convenience function like mkOptionList or optionsPairs instead of creating this directly.

Extended by OptionListGrouped in 1.7.0.

Constructors

OptionList
Fields olOptions :: [Option a] olReadExternal :: Text -> Maybe a A function mapping from the form's value (`optionExternalValue`) to the selected Haskell value (`optionInternalValue`).
OptionListGrouped
Fields olOptionsGrouped :: [(Text, [Option a])] olReadExternalGrouped :: Text -> Maybe a A function mapping from the form's value (`optionExternalValue`) to the selected Haskell value (`optionInternalValue`).

Instances

Instances details

Functor OptionList	Since: yesod-form-1.4.6
Instance details Defined in Yesod.Form.Fields Methods fmap :: (a -> b) -> OptionList a -> OptionList b # (<$) :: a -> OptionList b -> OptionList a #

type AutoFocus = Bool #

newtype Textarea #

A newtype wrapper around a Text whose ToMarkup instance converts newlines to HTML <br> tags.

(When text is entered into a <textarea>, newline characters are used to separate lines. If this text is then placed verbatim into HTML, the lines won't be separated, thus the need for replacing with <br> tags). If you don't need this functionality, simply use unTextarea to access the raw text.

Constructors

Textarea
Fields unTextarea :: Text

Instances

Instances details

Eq Textarea
Instance details Defined in Yesod.Form.Fields Methods (==) :: Textarea -> Textarea -> Bool # (/=) :: Textarea -> Textarea -> Bool #
Ord Textarea
Instance details Defined in Yesod.Form.Fields Methods compare :: Textarea -> Textarea -> Ordering # (<) :: Textarea -> Textarea -> Bool # (<=) :: Textarea -> Textarea -> Bool # (>) :: Textarea -> Textarea -> Bool # (>=) :: Textarea -> Textarea -> Bool # max :: Textarea -> Textarea -> Textarea # min :: Textarea -> Textarea -> Textarea #
Read Textarea
Instance details Defined in Yesod.Form.Fields Methods readsPrec :: Int -> ReadS Textarea # readList :: ReadS [Textarea] # readPrec :: ReadPrec Textarea # readListPrec :: ReadPrec [Textarea] #
Show Textarea
Instance details Defined in Yesod.Form.Fields Methods showsPrec :: Int -> Textarea -> ShowS # show :: Textarea -> String # showList :: [Textarea] -> ShowS #
IsString Textarea
Instance details Defined in Yesod.Form.Fields Methods fromString :: String -> Textarea #
ToJSON Textarea
Instance details Defined in Yesod.Form.Fields Methods toJSON :: Textarea -> Value # toEncoding :: Textarea -> Encoding # toJSONList :: [Textarea] -> Value # toEncodingList :: [Textarea] -> Encoding #
FromJSON Textarea
Instance details Defined in Yesod.Form.Fields Methods parseJSON :: Value -> Parser Textarea # parseJSONList :: Value -> Parser [Textarea] #
ToMarkup Textarea
Instance details Defined in Yesod.Form.Fields Methods toMarkup :: Textarea -> Markup # preEscapedToMarkup :: Textarea -> Markup #
PersistFieldSql Textarea
Instance details Defined in Yesod.Form.Fields Methods sqlType :: Proxy Textarea -> SqlType #
PersistField Textarea
Instance details Defined in Yesod.Form.Fields Methods toPersistValue :: Textarea -> PersistValue # fromPersistValue :: PersistValue -> Either Text Textarea #

defaultFormMessage :: FormMessage -> Text #

intField :: forall (m :: Type -> Type) i. (Monad m, Integral i, RenderMessage (HandlerSite m) FormMessage) => Field m i #

Creates a input with type="number" and step=1.

doubleField :: forall (m :: Type -> Type). (Monad m, RenderMessage (HandlerSite m) FormMessage) => Field m Double #

Creates a input with type="number" and step=any.

dayField :: forall (m :: Type -> Type). (Monad m, RenderMessage (HandlerSite m) FormMessage) => Field m Day #

Creates an input with type="date", validating the input using the parseDate function.

Add the time package and import the Data.Time.Calendar module to use this function.

timeField :: forall (m :: Type -> Type). (Monad m, RenderMessage (HandlerSite m) FormMessage) => Field m TimeOfDay #

An alias for timeFieldTypeTime.

timeFieldTypeTime :: forall (m :: Type -> Type). (Monad m, RenderMessage (HandlerSite m) FormMessage) => Field m TimeOfDay #

Creates an input with type="time". Browsers not supporting this type will fallback to a text field, and Yesod will parse the time as described in timeFieldTypeText.

Add the time package and import the Data.Time.LocalTime module to use this function.

Since: yesod-form-1.4.2

timeFieldTypeText :: forall (m :: Type -> Type). (Monad m, RenderMessage (HandlerSite m) FormMessage) => Field m TimeOfDay #

Creates an input with type="text", parsing the time from an [H]H:MM[:SS] format, with an optional AM or PM (if not given, AM is assumed for compatibility with the 24 hour clock system).

This function exists for backwards compatibility with the old implementation of timeField, which used to use type="text". Consider using timeField or timeFieldTypeTime for improved UX and validation from the browser.

Add the time package and import the Data.Time.LocalTime module to use this function.

Since: yesod-form-1.4.2

htmlField :: forall (m :: Type -> Type). (Monad m, RenderMessage (HandlerSite m) FormMessage) => Field m Html #

Creates a <textarea> tag whose input is sanitized to prevent XSS attacks and is validated for having balanced tags.

textareaField :: forall (m :: Type -> Type). (Monad m, RenderMessage (HandlerSite m) FormMessage) => Field m Textarea #

Creates a <textarea> tag whose returned value is wrapped in a Textarea; see Textarea for details.

hiddenField :: forall (m :: Type -> Type) p. (Monad m, PathPiece p, RenderMessage (HandlerSite m) FormMessage) => Field m p #

Creates an input with type="hidden"; you can use this to store information in a form that users shouldn't see (for example, Yesod stores CSRF tokens in a hidden field).

textField :: forall (m :: Type -> Type). (Monad m, RenderMessage (HandlerSite m) FormMessage) => Field m Text #

Creates a input with type="text".

passwordField :: forall (m :: Type -> Type). (Monad m, RenderMessage (HandlerSite m) FormMessage) => Field m Text #

Creates an input with type="password".

parseDate :: String -> Either FormMessage Day #

Parses a Day from a String.

parseTime :: Text -> Either FormMessage TimeOfDay #

emailField :: forall (m :: Type -> Type). (Monad m, RenderMessage (HandlerSite m) FormMessage) => Field m Text #

Creates an input with type="email". Yesod will validate the email's correctness according to RFC5322 and canonicalize it by removing comments and whitespace (see Text.Email.Validate).

multiEmailField :: forall (m :: Type -> Type). (Monad m, RenderMessage (HandlerSite m) FormMessage) => Field m [Text] #

Creates an input with type="email" with the multiple attribute; browsers might implement this as taking a comma separated list of emails. Each email address is validated as described in emailField.

Since: yesod-form-1.3.7

searchField :: forall (m :: Type -> Type). (Monad m, RenderMessage (HandlerSite m) FormMessage) => AutoFocus -> Field m Text #

Creates an input with type="search". For browsers without autofocus support, a JS fallback is used if AutoFocus is true.

urlField :: forall (m :: Type -> Type). (Monad m, RenderMessage (HandlerSite m) FormMessage) => Field m Text #

Creates an input with type="url", validating the URL according to RFC3986.

selectFieldList :: (Eq a, RenderMessage site FormMessage, RenderMessage site msg) => [(msg, a)] -> Field (HandlerFor site) a #

Creates a <select> tag for selecting one option. Example usage:

areq (selectFieldList [("Value 1" :: Text, "value1"),("Value 2", "value2")]) "Which value?" Nothing

selectFieldListGrouped :: (Eq a, RenderMessage site FormMessage, RenderMessage site msg) => [(msg, [(msg, a)])] -> Field (HandlerFor site) a #

Creates a <select> tag with <optgroup>s for selecting one option.

Since: yesod-form-1.7.0

selectField :: (Eq a, RenderMessage site FormMessage) => HandlerFor site (OptionList a) -> Field (HandlerFor site) a #

Creates a <select> tag with optional <optgroup>s for selecting one option. Example usage:

areq (selectField $ optionsPairs [(MsgValue1, "value1"),(MsgValue2, "value2")]) "Which value?" Nothing

multiSelectFieldList :: (Eq a, RenderMessage site msg) => [(msg, a)] -> Field (HandlerFor site) [a] #

Creates a <select> tag for selecting multiple options.

multiSelectField :: Eq a => HandlerFor site (OptionList a) -> Field (HandlerFor site) [a] #

Creates a <select> tag for selecting multiple options.

radioFieldList :: (Eq a, RenderMessage site FormMessage, RenderMessage site msg) => [(msg, a)] -> Field (HandlerFor site) a #

Creates an input with type="radio" for selecting one option.

checkboxesFieldList :: (Eq a, RenderMessage site msg) => [(msg, a)] -> Field (HandlerFor site) [a] #

Creates an input with type="checkbox" for selecting multiple options.

checkboxesField :: Eq a => HandlerFor site (OptionList a) -> Field (HandlerFor site) [a] #

Creates an input with type="checkbox" for selecting multiple options.

radioField :: (Eq a, RenderMessage site FormMessage) => HandlerFor site (OptionList a) -> Field (HandlerFor site) a #

Creates an input with type="radio" for selecting one option.

boolField :: forall (m :: Type -> Type). (Monad m, RenderMessage (HandlerSite m) FormMessage) => Field m Bool #

Creates a group of radio buttons to answer the question given in the message. Radio buttons are used to allow differentiating between an empty response (Nothing) and a no response (Just False). Consider using the simpler checkBoxField if you don't need to make this distinction.

If this field is optional, the first radio button is labeled "<None>", the second "Yes" and the third "No".

If this field is required, the first radio button is labeled "Yes" and the second "No".

(Exact label titles will depend on localization).

checkBoxField :: forall (m :: Type -> Type). Monad m => Field m Bool #

Creates an input with type="checkbox". While the default boolField implements a radio button so you can differentiate between an empty response (Nothing) and a no response (Just False), this simpler checkbox field returns an empty response as Just False.

Note that this makes the field always optional.

mkOptionList :: [Option a] -> OptionList a #

Creates an OptionList, using a Map to implement the olReadExternal function.

mkOptionListGrouped :: [(Text, [Option a])] -> OptionList a #

Creates an OptionList, using a Map to implement the olReadExternalGrouped function.

Since: yesod-form-1.7.0

optionsPairs :: (MonadHandler m, RenderMessage (HandlerSite m) msg) => [(msg, a)] -> m (OptionList a) #

Creates an OptionList from a list of (display-value, internal value) pairs.

optionsPairsGrouped :: (MonadHandler m, RenderMessage (HandlerSite m) msg) => [(msg, [(msg, a)])] -> m (OptionList a) #

Creates an OptionList from a list of (display-value, internal value) pairs.

Since: yesod-form-1.7.0

optionsEnum :: (MonadHandler m, Show a, Enum a, Bounded a) => m (OptionList a) #

Creates an OptionList from an Enum, using its Show instance for the user-facing value.

optionsPersist :: (YesodPersist site, PersistQueryRead backend, PathPiece (Key a), RenderMessage site msg, YesodPersistBackend site ~ backend, PersistRecordBackend a backend) => [Filter a] -> [SelectOpt a] -> (a -> msg) -> HandlerFor site (OptionList (Entity a)) #

Selects a list of Entitys with the given Filter and SelectOpts. The (a -> msg) function is then used to derive the display value for an OptionList. Example usage:

Country
   name Text
   deriving Eq -- Must derive Eq

data CountryForm = CountryForm
  { country :: Entity Country
  }

countryNameForm :: AForm Handler CountryForm
countryNameForm = CountryForm
        <$> areq (selectField countries) "Which country do you live in?" Nothing
        where
          countries = optionsPersist [] [Asc CountryName] countryName

optionsPersistKey :: (YesodPersist site, PersistQueryRead backend, PathPiece (Key a), RenderMessage site msg, backend ~ YesodPersistBackend site, PersistRecordBackend a backend) => [Filter a] -> [SelectOpt a] -> (a -> msg) -> HandlerFor site (OptionList (Key a)) #

An alternative to optionsPersist which returns just the Key instead of the entire Entity.

Since: yesod-form-1.3.2

selectFieldHelper #

Arguments

:: (Eq a, RenderMessage site FormMessage)
=> (Text -> Text -> [(Text, Text)] -> WidgetFor site () -> WidgetFor site ())	Outermost part of the field
-> (Text -> Text -> Bool -> WidgetFor site ())	An option for None if the field is optional
-> (Text -> Text -> [(Text, Text)] -> Text -> Bool -> Text -> WidgetFor site ())	Other options
-> Maybe (Text -> WidgetFor site ())	Group headers placed inbetween options
-> HandlerFor site (OptionList a)
-> Field (HandlerFor site) a

A helper function for constucting selectFields with optional option groups. You may want to use this when you define your custom selectFields or radioFields.

Since: yesod-form-1.6.2

fileField :: forall (m :: Type -> Type). Monad m => Field m FileInfo #

Creates an input with type="file".

fileAFormReq :: forall (m :: Type -> Type). (MonadHandler m, RenderMessage (HandlerSite m) FormMessage) => FieldSettings (HandlerSite m) -> AForm m FileInfo #

fileAFormOpt :: forall (m :: Type -> Type). MonadHandler m => FieldSettings (HandlerSite m) -> AForm m (Maybe FileInfo) #

formatW3 :: UTCTime -> Text #

Format a UTCTime in W3 format.

formatRFC1123 :: UTCTime -> Text #

Format as per RFC 1123.

formatRFC822 :: UTCTime -> Text #

Format as per RFC 822.

class RenderRoute a => RouteAttrs a where #

Methods

routeAttrs #

Arguments

:: Route a
-> Set Text	A set of attributes associated with the route.

Instances

Instances details

RouteAttrs App Source #
Instance details Defined in Hledger.Web.Foundation Methods routeAttrs :: Route App -> Set Text #

class RenderRoute a => ParseRoute a where #

Methods

parseRoute #

Arguments

:: ([Text], [(Text, Text)])	The path of the URL split on forward slashes, and a list of query parameters with their associated value.
-> Maybe (Route a)

Instances

Instances details

ParseRoute WaiSubsiteWithAuth
Instance details Defined in Yesod.Core.Types Methods parseRoute :: ([Text], [(Text, Text)]) -> Maybe (Route WaiSubsiteWithAuth) #
ParseRoute WaiSubsite
Instance details Defined in Yesod.Core.Types Methods parseRoute :: ([Text], [(Text, Text)]) -> Maybe (Route WaiSubsite) #
ParseRoute LiteApp
Instance details Defined in Yesod.Core.Internal.LiteApp Methods parseRoute :: ([Text], [(Text, Text)]) -> Maybe (Route LiteApp) #
ParseRoute Static
Instance details Defined in Yesod.Static Methods parseRoute :: ([Text], [(Text, Text)]) -> Maybe (Route Static) #
ParseRoute App Source #
Instance details Defined in Hledger.Web.Foundation Methods parseRoute :: ([Text], [(Text, Text)]) -> Maybe (Route App) #

class Eq (Route a) => RenderRoute a where #

Methods

renderRoute #

Arguments

:: Route a
-> ([Text], [(Text, Text)])	The path of the URL split on forward slashes, and a list of query parameters with their associated value.

Instances

Instances details

RenderRoute WaiSubsiteWithAuth
Instance details Defined in Yesod.Core.Types Associated Types data Route WaiSubsiteWithAuth # Methods renderRoute :: Route WaiSubsiteWithAuth -> ([Text], [(Text, Text)]) #
RenderRoute WaiSubsite
Instance details Defined in Yesod.Core.Types Associated Types data Route WaiSubsite # Methods renderRoute :: Route WaiSubsite -> ([Text], [(Text, Text)]) #
RenderRoute LiteApp
Instance details Defined in Yesod.Core.Internal.LiteApp Associated Types data Route LiteApp # Methods renderRoute :: Route LiteApp -> ([Text], [(Text, Text)]) #
RenderRoute Static
Instance details Defined in Yesod.Static Associated Types data Route Static # Methods renderRoute :: Route Static -> ([Text], [(Text, Text)]) #
RenderRoute App Source #
Instance details Defined in Hledger.Web.Foundation Associated Types data Route App # Methods renderRoute :: Route App -> ([Text], [(Text, Text)]) #

data family Route a #

The type-safe URLs associated with a site argument.

Instances

Instances details

RedirectUrl master (Route master)
Instance details Defined in Yesod.Core.Handler Methods toTextUrl :: (MonadHandler m, HandlerSite m ~ master) => Route master -> m Text #
(key ~ Text, val ~ Text) => RedirectUrl master (Route master, [(key, val)])
Instance details Defined in Yesod.Core.Handler Methods toTextUrl :: (MonadHandler m, HandlerSite m ~ master) => (Route master, [(key, val)]) -> m Text #
(key ~ Text, val ~ Text) => RedirectUrl master (Route master, Map key val)
Instance details Defined in Yesod.Core.Handler Methods toTextUrl :: (MonadHandler m, HandlerSite m ~ master) => (Route master, Map key val) -> m Text #
Eq (Route WaiSubsiteWithAuth)
Instance details Defined in Yesod.Core.Types Methods (==) :: Route WaiSubsiteWithAuth -> Route WaiSubsiteWithAuth -> Bool # (/=) :: Route WaiSubsiteWithAuth -> Route WaiSubsiteWithAuth -> Bool #
Eq (Route WaiSubsite)
Instance details Defined in Yesod.Core.Types Methods (==) :: Route WaiSubsite -> Route WaiSubsite -> Bool # (/=) :: Route WaiSubsite -> Route WaiSubsite -> Bool #
Eq (Route LiteApp)
Instance details Defined in Yesod.Core.Internal.LiteApp Methods (==) :: Route LiteApp -> Route LiteApp -> Bool # (/=) :: Route LiteApp -> Route LiteApp -> Bool #
Eq (Route Static)
Instance details Defined in Yesod.Static Methods (==) :: Route Static -> Route Static -> Bool # (/=) :: Route Static -> Route Static -> Bool #
Eq (Route App) Source #
Instance details Defined in Hledger.Web.Foundation Methods (==) :: Route App -> Route App -> Bool # (/=) :: Route App -> Route App -> Bool #
Ord (Route WaiSubsiteWithAuth)
Instance details Defined in Yesod.Core.Types Methods compare :: Route WaiSubsiteWithAuth -> Route WaiSubsiteWithAuth -> Ordering # (<) :: Route WaiSubsiteWithAuth -> Route WaiSubsiteWithAuth -> Bool # (<=) :: Route WaiSubsiteWithAuth -> Route WaiSubsiteWithAuth -> Bool # (>) :: Route WaiSubsiteWithAuth -> Route WaiSubsiteWithAuth -> Bool # (>=) :: Route WaiSubsiteWithAuth -> Route WaiSubsiteWithAuth -> Bool # max :: Route WaiSubsiteWithAuth -> Route WaiSubsiteWithAuth -> Route WaiSubsiteWithAuth # min :: Route WaiSubsiteWithAuth -> Route WaiSubsiteWithAuth -> Route WaiSubsiteWithAuth #
Ord (Route WaiSubsite)
Instance details Defined in Yesod.Core.Types Methods compare :: Route WaiSubsite -> Route WaiSubsite -> Ordering # (<) :: Route WaiSubsite -> Route WaiSubsite -> Bool # (<=) :: Route WaiSubsite -> Route WaiSubsite -> Bool # (>) :: Route WaiSubsite -> Route WaiSubsite -> Bool # (>=) :: Route WaiSubsite -> Route WaiSubsite -> Bool # max :: Route WaiSubsite -> Route WaiSubsite -> Route WaiSubsite # min :: Route WaiSubsite -> Route WaiSubsite -> Route WaiSubsite #
Ord (Route LiteApp)
Instance details Defined in Yesod.Core.Internal.LiteApp Methods compare :: Route LiteApp -> Route LiteApp -> Ordering # (<) :: Route LiteApp -> Route LiteApp -> Bool # (<=) :: Route LiteApp -> Route LiteApp -> Bool # (>) :: Route LiteApp -> Route LiteApp -> Bool # (>=) :: Route LiteApp -> Route LiteApp -> Bool # max :: Route LiteApp -> Route LiteApp -> Route LiteApp # min :: Route LiteApp -> Route LiteApp -> Route LiteApp #
Read (Route WaiSubsiteWithAuth)
Instance details Defined in Yesod.Core.Types Methods readsPrec :: Int -> ReadS (Route WaiSubsiteWithAuth) # readList :: ReadS [Route WaiSubsiteWithAuth] # readPrec :: ReadPrec (Route WaiSubsiteWithAuth) # readListPrec :: ReadPrec [Route WaiSubsiteWithAuth] #
Read (Route WaiSubsite)
Instance details Defined in Yesod.Core.Types Methods readsPrec :: Int -> ReadS (Route WaiSubsite) # readList :: ReadS [Route WaiSubsite] # readPrec :: ReadPrec (Route WaiSubsite) # readListPrec :: ReadPrec [Route WaiSubsite] #
Read (Route LiteApp)
Instance details Defined in Yesod.Core.Internal.LiteApp Methods readsPrec :: Int -> ReadS (Route LiteApp) # readList :: ReadS [Route LiteApp] # readPrec :: ReadPrec (Route LiteApp) # readListPrec :: ReadPrec [Route LiteApp] #
Read (Route Static)
Instance details Defined in Yesod.Static Methods readsPrec :: Int -> ReadS (Route Static) # readList :: ReadS [Route Static] # readPrec :: ReadPrec (Route Static) # readListPrec :: ReadPrec [Route Static] #
Read (Route App) Source #
Instance details Defined in Hledger.Web.Foundation Methods readsPrec :: Int -> ReadS (Route App) # readList :: ReadS [Route App] # readPrec :: ReadPrec (Route App) # readListPrec :: ReadPrec [Route App] #
Show (Route WaiSubsiteWithAuth)
Instance details Defined in Yesod.Core.Types Methods showsPrec :: Int -> Route WaiSubsiteWithAuth -> ShowS # show :: Route WaiSubsiteWithAuth -> String # showList :: [Route WaiSubsiteWithAuth] -> ShowS #
Show (Route WaiSubsite)
Instance details Defined in Yesod.Core.Types Methods showsPrec :: Int -> Route WaiSubsite -> ShowS # show :: Route WaiSubsite -> String # showList :: [Route WaiSubsite] -> ShowS #
Show (Route LiteApp)
Instance details Defined in Yesod.Core.Internal.LiteApp Methods showsPrec :: Int -> Route LiteApp -> ShowS # show :: Route LiteApp -> String # showList :: [Route LiteApp] -> ShowS #
Show (Route Static)
Instance details Defined in Yesod.Static Methods showsPrec :: Int -> Route Static -> ShowS # show :: Route Static -> String # showList :: [Route Static] -> ShowS #
Show (Route App) Source #
Instance details Defined in Hledger.Web.Foundation Methods showsPrec :: Int -> Route App -> ShowS # show :: Route App -> String # showList :: [Route App] -> ShowS #
data Route WaiSubsiteWithAuth
Instance details Defined in Yesod.Core.Types data Route WaiSubsiteWithAuth = WaiSubsiteWithAuthRoute [Text] [(Text, Text)]
data Route WaiSubsite
Instance details Defined in Yesod.Core.Types data Route WaiSubsite = WaiSubsiteRoute [Text] [(Text, Text)]
data Route LiteApp
Instance details Defined in Yesod.Core.Internal.LiteApp data Route LiteApp = LiteAppRoute [Text]
data Route Static
Instance details Defined in Yesod.Static data Route Static = StaticRoute [Text] [(Text, Text)]
data Route App Source #
Instance details Defined in Hledger.Web.Foundation data Route App = FaviconR \| RobotsR \| StaticR (Route Static) \| RootR \| JournalR \| RegisterR \| AddR \| ManageR \| EditR FilePath \| UploadR FilePath \| DownloadR FilePath \| VersionR \| AccountnamesR \| TransactionsR \| PricesR \| CommoditiesR \| AccountsR \| AccounttransactionsR AccountName

data SubHandlerFor sub master a #

A handler monad for subsite

Since: yesod-core-1.6.0

Instances

Instances details

Monad (SubHandlerFor child master)
Instance details Defined in Yesod.Core.Types Methods (>>=) :: SubHandlerFor child master a -> (a -> SubHandlerFor child master b) -> SubHandlerFor child master b # (>>) :: SubHandlerFor child master a -> SubHandlerFor child master b -> SubHandlerFor child master b # return :: a -> SubHandlerFor child master a #
Functor (SubHandlerFor sub master)
Instance details Defined in Yesod.Core.Types Methods fmap :: (a -> b) -> SubHandlerFor sub master a -> SubHandlerFor sub master b # (<$) :: a -> SubHandlerFor sub master b -> SubHandlerFor sub master a #
Applicative (SubHandlerFor child master)
Instance details Defined in Yesod.Core.Types Methods pure :: a -> SubHandlerFor child master a # (<>) :: SubHandlerFor child master (a -> b) -> SubHandlerFor child master a -> SubHandlerFor child master b # liftA2 :: (a -> b -> c) -> SubHandlerFor child master a -> SubHandlerFor child master b -> SubHandlerFor child master c # (>) :: SubHandlerFor child master a -> SubHandlerFor child master b -> SubHandlerFor child master b # (<*) :: SubHandlerFor child master a -> SubHandlerFor child master b -> SubHandlerFor child master a #
MonadIO (SubHandlerFor child master)
Instance details Defined in Yesod.Core.Types Methods liftIO :: IO a -> SubHandlerFor child master a #
MonadUnliftIO (SubHandlerFor child master)	Since: yesod-core-1.4.38
Instance details Defined in Yesod.Core.Types Methods withRunInIO :: ((forall a. SubHandlerFor child master a -> IO a) -> IO b) -> SubHandlerFor child master b #
MonadResource (SubHandlerFor child master)
Instance details Defined in Yesod.Core.Types Methods liftResourceT :: ResourceT IO a -> SubHandlerFor child master a #
MonadThrow (SubHandlerFor child master)
Instance details Defined in Yesod.Core.Types Methods throwM :: Exception e => e -> SubHandlerFor child master a #
MonadLogger (SubHandlerFor child master)
Instance details Defined in Yesod.Core.Types Methods monadLoggerLog :: ToLogStr msg => Loc -> LogSource -> LogLevel -> msg -> SubHandlerFor child master () #
MonadLoggerIO (SubHandlerFor child master)
Instance details Defined in Yesod.Core.Types Methods askLoggerIO :: SubHandlerFor child master (Loc -> LogSource -> LogLevel -> LogStr -> IO ()) #
MonadHandler (SubHandlerFor sub master)
Instance details Defined in Yesod.Core.Class.Handler Associated Types type HandlerSite (SubHandlerFor sub master) # type SubHandlerSite (SubHandlerFor sub master) # Methods liftHandler :: HandlerFor (HandlerSite (SubHandlerFor sub master)) a -> SubHandlerFor sub master a # liftSubHandler :: SubHandlerFor (SubHandlerSite (SubHandlerFor sub master)) (HandlerSite (SubHandlerFor sub master)) a -> SubHandlerFor sub master a #
MonadReader (HandlerData child master) (SubHandlerFor child master)
Instance details Defined in Yesod.Core.Types Methods ask :: SubHandlerFor child master (HandlerData child master) # local :: (HandlerData child master -> HandlerData child master) -> SubHandlerFor child master a -> SubHandlerFor child master a # reader :: (HandlerData child master -> a) -> SubHandlerFor child master a #
type HandlerSite (SubHandlerFor sub master)
Instance details Defined in Yesod.Core.Class.Handler type HandlerSite (SubHandlerFor sub master) = master
type SubHandlerSite (SubHandlerFor sub master)
Instance details Defined in Yesod.Core.Class.Handler type SubHandlerSite (SubHandlerFor sub master) = sub

data Header #

Headers to be added to a Result.

Constructors

AddCookie !SetCookie
DeleteCookie !ByteString !ByteString	name and path
Header !(CI ByteString) !ByteString	key and value

Instances

data ErrorResponse #

Responses to indicate some form of an error occurred.

Constructors

NotFound	The requested resource was not found. Examples of when this occurs include when an incorrect URL is used, or `yesod-persistent`'s `get404` doesn't find a value. HTTP status: 404.
InternalError !Text	Some sort of unexpected exception. If your application uses `throwIO` or `error` to throw an exception, this is the form it would take. HTTP status: 500.
InvalidArgs ![Text]	Indicates some sort of invalid or missing argument, like a missing query parameter or malformed JSON body. Examples Yesod functions that send this include `requireCheckJsonBody` and `Yesod.Auth.GoogleEmail2`. HTTP status: 400.
NotAuthenticated	Indicates the user is not logged in. This is thrown when `isAuthorized` returns `AuthenticationRequired`. HTTP code: 401.
PermissionDenied !Text	Indicates the user doesn't have permission to access the requested resource. This is thrown when `isAuthorized` returns `Unauthorized`. HTTP code: 403.
BadMethod !Method	Indicates the URL would have been valid if used with a different HTTP method (e.g. a GET was used, but only POST is handled.) HTTP code: 405.

Instances

Instances details

Eq ErrorResponse
Instance details Defined in Yesod.Core.Types Methods (==) :: ErrorResponse -> ErrorResponse -> Bool # (/=) :: ErrorResponse -> ErrorResponse -> Bool #
Show ErrorResponse
Instance details Defined in Yesod.Core.Types Methods showsPrec :: Int -> ErrorResponse -> ShowS # show :: ErrorResponse -> String # showList :: [ErrorResponse] -> ShowS #
Generic ErrorResponse
Instance details Defined in Yesod.Core.Types Associated Types type Rep ErrorResponse :: Type -> Type # Methods from :: ErrorResponse -> Rep ErrorResponse x # to :: Rep ErrorResponse x -> ErrorResponse #
NFData ErrorResponse
Instance details Defined in Yesod.Core.Types Methods rnf :: ErrorResponse -> () #
type Rep ErrorResponse
Instance details Defined in Yesod.Core.Types type Rep ErrorResponse = D1 ('MetaData "ErrorResponse" "Yesod.Core.Types" "yesod-core-1.6.21.0-8cNcW104tWq6rCyxnAXmGy" 'False) ((C1 ('MetaCons "NotFound" 'PrefixI 'False) (U1 :: Type -> Type) :+: (C1 ('MetaCons "InternalError" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 Text)) :+: C1 ('MetaCons "InvalidArgs" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 [Text])))) :+: (C1 ('MetaCons "NotAuthenticated" 'PrefixI 'False) (U1 :: Type -> Type) :+: (C1 ('MetaCons "PermissionDenied" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 Text)) :+: C1 ('MetaCons "BadMethod" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 Method)))))

newtype DontFullyEvaluate a #

Prevents a response body from being fully evaluated before sending the request.

Since 1.1.0

Constructors

DontFullyEvaluate
Fields unDontFullyEvaluate :: a

Instances

Instances details

ToTypedContent a => ToTypedContent (DontFullyEvaluate a)
Instance details Defined in Yesod.Core.Content Methods toTypedContent :: DontFullyEvaluate a -> TypedContent #
HasContentType a => HasContentType (DontFullyEvaluate a)
Instance details Defined in Yesod.Core.Content Methods getContentType :: Monad m => m (DontFullyEvaluate a) -> ContentType #
ToContent a => ToContent (DontFullyEvaluate a)
Instance details Defined in Yesod.Core.Content Methods toContent :: DontFullyEvaluate a -> Content #

type ContentType = ByteString #

newtype RepXml #

Constructors

RepXml Content

Instances

Instances details

ToTypedContent RepXml
Instance details Defined in Yesod.Core.Content Methods toTypedContent :: RepXml -> TypedContent #
HasContentType RepXml
Instance details Defined in Yesod.Core.Content Methods getContentType :: Monad m => m RepXml -> ContentType #
ToContent RepXml
Instance details Defined in Yesod.Core.Content Methods toContent :: RepXml -> Content #

newtype RepPlain #

Constructors

RepPlain Content

Instances

Instances details

ToTypedContent RepPlain
Instance details Defined in Yesod.Core.Content Methods toTypedContent :: RepPlain -> TypedContent #
HasContentType RepPlain
Instance details Defined in Yesod.Core.Content Methods getContentType :: Monad m => m RepPlain -> ContentType #
ToContent RepPlain
Instance details Defined in Yesod.Core.Content Methods toContent :: RepPlain -> Content #

newtype RepJson #

Constructors

RepJson Content

Instances

Instances details

ToTypedContent RepJson
Instance details Defined in Yesod.Core.Content Methods toTypedContent :: RepJson -> TypedContent #
HasContentType RepJson
Instance details Defined in Yesod.Core.Content Methods getContentType :: Monad m => m RepJson -> ContentType #
ToContent RepJson
Instance details Defined in Yesod.Core.Content Methods toContent :: RepJson -> Content #

type RepHtml = Html #

data TypedContent #

Constructors

TypedContent !ContentType !Content

Instances

Instances details

ToTypedContent TypedContent
Instance details Defined in Yesod.Core.Content Methods toTypedContent :: TypedContent -> TypedContent #
ToContent TypedContent
Instance details Defined in Yesod.Core.Content Methods toContent :: TypedContent -> Content #

data Content #

Constructors

ContentBuilder !Builder !(Maybe Int)	The content and optional content length.
ContentSource !(ConduitT () (Flush Builder) (ResourceT IO) ())
ContentFile !FilePath !(Maybe FilePart)
ContentDontEvaluate !Content

Instances

Instances details

IsString Content
Instance details Defined in Yesod.Core.Types Methods fromString :: String -> Content #
ToContent Content
Instance details Defined in Yesod.Core.Content Methods toContent :: Content -> Content #
ToTypedContent (ContentType, Content)
Instance details Defined in Yesod.Core.Content Methods toTypedContent :: (ContentType, Content) -> TypedContent #
ToContent (ContentType, Content)
Instance details Defined in Yesod.Core.Content Methods toContent :: (ContentType, Content) -> Content #

data PageContent url #

Content for a web page. By providing this datatype, we can easily create generic site templates, which would have the type signature:

PageContent url -> HtmlUrl url

Constructors

PageContent
Fields pageTitle :: !Html pageHead :: !(HtmlUrl url) pageBody :: !(HtmlUrl url)

newtype CssBuilder #

Newtype wrapper allowing injection of arbitrary content into CSS.

Usage:

toWidget $ CssBuilder "p { color: red }"

Since: 1.1.3

Constructors

CssBuilder
Fields unCssBuilder :: Builder

Instances

Instances details

ToWidgetHead site CssBuilder
Instance details Defined in Yesod.Core.Widget Methods toWidgetHead :: (MonadWidget m, HandlerSite m ~ site) => CssBuilder -> m () #
ToWidgetMedia site CssBuilder
Instance details Defined in Yesod.Core.Widget Methods toWidgetMedia :: (MonadWidget m, HandlerSite m ~ site) => Text -> CssBuilder -> m () #
ToWidget site CssBuilder
Instance details Defined in Yesod.Core.Widget Methods toWidget :: (MonadWidget m, HandlerSite m ~ site) => CssBuilder -> m () #
render ~ RY site => ToWidgetHead site (render -> CssBuilder)
Instance details Defined in Yesod.Core.Widget Methods toWidgetHead :: (MonadWidget m, HandlerSite m ~ site) => (render -> CssBuilder) -> m () #
render ~ RY site => ToWidgetMedia site (render -> CssBuilder)
Instance details Defined in Yesod.Core.Widget Methods toWidgetMedia :: (MonadWidget m, HandlerSite m ~ site) => Text -> (render -> CssBuilder) -> m () #
render ~ RY site => ToWidget site (render -> CssBuilder)
Instance details Defined in Yesod.Core.Widget Methods toWidget :: (MonadWidget m, HandlerSite m ~ site) => (render -> CssBuilder) -> m () #

data WidgetFor site a #

A generic widget, allowing specification of both the subsite and master site datatypes. While this is simply a WriterT, we define a newtype for better error messages.

Instances

Instances details

(site' ~ site, a ~ ()) => ToWidget site' (WidgetFor site a)
Instance details Defined in Yesod.Core.Widget Methods toWidget :: (MonadWidget m, HandlerSite m ~ site') => WidgetFor site a -> m () #
Monad (WidgetFor site)
Instance details Defined in Yesod.Core.Types Methods (>>=) :: WidgetFor site a -> (a -> WidgetFor site b) -> WidgetFor site b # (>>) :: WidgetFor site a -> WidgetFor site b -> WidgetFor site b # return :: a -> WidgetFor site a #
Functor (WidgetFor site)
Instance details Defined in Yesod.Core.Types Methods fmap :: (a -> b) -> WidgetFor site a -> WidgetFor site b # (<$) :: a -> WidgetFor site b -> WidgetFor site a #
Applicative (WidgetFor site)
Instance details Defined in Yesod.Core.Types Methods pure :: a -> WidgetFor site a # (<>) :: WidgetFor site (a -> b) -> WidgetFor site a -> WidgetFor site b # liftA2 :: (a -> b -> c) -> WidgetFor site a -> WidgetFor site b -> WidgetFor site c # (>) :: WidgetFor site a -> WidgetFor site b -> WidgetFor site b # (<*) :: WidgetFor site a -> WidgetFor site b -> WidgetFor site a #
MonadIO (WidgetFor site)
Instance details Defined in Yesod.Core.Types Methods liftIO :: IO a -> WidgetFor site a #
MonadUnliftIO (WidgetFor site)	Since: yesod-core-1.4.38
Instance details Defined in Yesod.Core.Types Methods withRunInIO :: ((forall a. WidgetFor site a -> IO a) -> IO b) -> WidgetFor site b #
MonadResource (WidgetFor site)
Instance details Defined in Yesod.Core.Types Methods liftResourceT :: ResourceT IO a -> WidgetFor site a #
PrimMonad (WidgetFor site)	Since: yesod-core-1.6.7
Instance details Defined in Yesod.Core.Types Associated Types type PrimState (WidgetFor site) # Methods primitive :: (State# (PrimState (WidgetFor site)) -> (# State# (PrimState (WidgetFor site)), a #)) -> WidgetFor site a #
MonadThrow (WidgetFor site)
Instance details Defined in Yesod.Core.Types Methods throwM :: Exception e => e -> WidgetFor site a #
MonadLogger (WidgetFor site)
Instance details Defined in Yesod.Core.Types Methods monadLoggerLog :: ToLogStr msg => Loc -> LogSource -> LogLevel -> msg -> WidgetFor site () #
MonadLoggerIO (WidgetFor site)
Instance details Defined in Yesod.Core.Types Methods askLoggerIO :: WidgetFor site (Loc -> LogSource -> LogLevel -> LogStr -> IO ()) #
MonadWidget (WidgetFor site)
Instance details Defined in Yesod.Core.Class.Handler Methods liftWidget :: WidgetFor (HandlerSite (WidgetFor site)) a -> WidgetFor site a #
MonadHandler (WidgetFor site)
Instance details Defined in Yesod.Core.Class.Handler Associated Types type HandlerSite (WidgetFor site) # type SubHandlerSite (WidgetFor site) # Methods liftHandler :: HandlerFor (HandlerSite (WidgetFor site)) a -> WidgetFor site a # liftSubHandler :: SubHandlerFor (SubHandlerSite (WidgetFor site)) (HandlerSite (WidgetFor site)) a -> WidgetFor site a #
MonadReader (WidgetData site) (WidgetFor site)
Instance details Defined in Yesod.Core.Types Methods ask :: WidgetFor site (WidgetData site) # local :: (WidgetData site -> WidgetData site) -> WidgetFor site a -> WidgetFor site a # reader :: (WidgetData site -> a) -> WidgetFor site a #
a ~ () => IsString (WidgetFor site a)	A `String` can be trivially promoted to a widget. For example, in a yesod-scaffold site you could use: getHomeR = do defaultLayout "Widget text"
Instance details Defined in Yesod.Core.Types Methods fromString :: String -> WidgetFor site a #
a ~ () => Semigroup (WidgetFor site a)
Instance details Defined in Yesod.Core.Types Methods (<>) :: WidgetFor site a -> WidgetFor site a -> WidgetFor site a # sconcat :: NonEmpty (WidgetFor site a) -> WidgetFor site a # stimes :: Integral b => b -> WidgetFor site a -> WidgetFor site a #
a ~ () => Monoid (WidgetFor site a)
Instance details Defined in Yesod.Core.Types Methods mempty :: WidgetFor site a # mappend :: WidgetFor site a -> WidgetFor site a -> WidgetFor site a # mconcat :: [WidgetFor site a] -> WidgetFor site a #
type PrimState (WidgetFor site)
Instance details Defined in Yesod.Core.Types type PrimState (WidgetFor site) = PrimState IO
type HandlerSite (WidgetFor site)
Instance details Defined in Yesod.Core.Class.Handler type HandlerSite (WidgetFor site) = site
type SubHandlerSite (WidgetFor site)
Instance details Defined in Yesod.Core.Class.Handler type SubHandlerSite (WidgetFor site) = site

data HandlerFor site a #

A generic handler monad, which can have a different subsite and master site. We define a newtype for better error message.

Instances

Instances details

Monad (HandlerFor site)
Instance details Defined in Yesod.Core.Types Methods (>>=) :: HandlerFor site a -> (a -> HandlerFor site b) -> HandlerFor site b # (>>) :: HandlerFor site a -> HandlerFor site b -> HandlerFor site b # return :: a -> HandlerFor site a #
Functor (HandlerFor site)
Instance details Defined in Yesod.Core.Types Methods fmap :: (a -> b) -> HandlerFor site a -> HandlerFor site b # (<$) :: a -> HandlerFor site b -> HandlerFor site a #
Applicative (HandlerFor site)
Instance details Defined in Yesod.Core.Types Methods pure :: a -> HandlerFor site a # (<>) :: HandlerFor site (a -> b) -> HandlerFor site a -> HandlerFor site b # liftA2 :: (a -> b -> c) -> HandlerFor site a -> HandlerFor site b -> HandlerFor site c # (>) :: HandlerFor site a -> HandlerFor site b -> HandlerFor site b # (<*) :: HandlerFor site a -> HandlerFor site b -> HandlerFor site a #
MonadIO (HandlerFor site)
Instance details Defined in Yesod.Core.Types Methods liftIO :: IO a -> HandlerFor site a #
MonadUnliftIO (HandlerFor site)	Since: yesod-core-1.4.38
Instance details Defined in Yesod.Core.Types Methods withRunInIO :: ((forall a. HandlerFor site a -> IO a) -> IO b) -> HandlerFor site b #
MonadResource (HandlerFor site)
Instance details Defined in Yesod.Core.Types Methods liftResourceT :: ResourceT IO a -> HandlerFor site a #
PrimMonad (HandlerFor site)	Since: yesod-core-1.6.7
Instance details Defined in Yesod.Core.Types Associated Types type PrimState (HandlerFor site) # Methods primitive :: (State# (PrimState (HandlerFor site)) -> (# State# (PrimState (HandlerFor site)), a #)) -> HandlerFor site a #
MonadThrow (HandlerFor site)
Instance details Defined in Yesod.Core.Types Methods throwM :: Exception e => e -> HandlerFor site a #
MonadLogger (HandlerFor site)
Instance details Defined in Yesod.Core.Types Methods monadLoggerLog :: ToLogStr msg => Loc -> LogSource -> LogLevel -> msg -> HandlerFor site () #
MonadLoggerIO (HandlerFor site)
Instance details Defined in Yesod.Core.Types Methods askLoggerIO :: HandlerFor site (Loc -> LogSource -> LogLevel -> LogStr -> IO ()) #
MonadHandler (HandlerFor site)
Instance details Defined in Yesod.Core.Class.Handler Associated Types type HandlerSite (HandlerFor site) # type SubHandlerSite (HandlerFor site) # Methods liftHandler :: HandlerFor (HandlerSite (HandlerFor site)) a -> HandlerFor site a # liftSubHandler :: SubHandlerFor (SubHandlerSite (HandlerFor site)) (HandlerSite (HandlerFor site)) a -> HandlerFor site a #
MonadReader (HandlerData site site) (HandlerFor site)
Instance details Defined in Yesod.Core.Types Methods ask :: HandlerFor site (HandlerData site site) # local :: (HandlerData site site -> HandlerData site site) -> HandlerFor site a -> HandlerFor site a # reader :: (HandlerData site site -> a) -> HandlerFor site a #
type PrimState (HandlerFor site)
Instance details Defined in Yesod.Core.Types type PrimState (HandlerFor site) = PrimState IO
type HandlerSite (HandlerFor site)
Instance details Defined in Yesod.Core.Class.Handler type HandlerSite (HandlerFor site) = site
type SubHandlerSite (HandlerFor site)
Instance details Defined in Yesod.Core.Class.Handler type SubHandlerSite (HandlerFor site) = site

newtype WaiSubsiteWithAuth #

Like WaiSubsite, but applies parent site's middleware and isAuthorized.

Since: yesod-core-1.4.34

Constructors

WaiSubsiteWithAuth
Fields runWaiSubsiteWithAuth :: Application

Instances

Instances details

ParseRoute WaiSubsiteWithAuth
Instance details Defined in Yesod.Core.Types Methods parseRoute :: ([Text], [(Text, Text)]) -> Maybe (Route WaiSubsiteWithAuth) #
RenderRoute WaiSubsiteWithAuth
Instance details Defined in Yesod.Core.Types Associated Types data Route WaiSubsiteWithAuth # Methods renderRoute :: Route WaiSubsiteWithAuth -> ([Text], [(Text, Text)]) #
YesodSubDispatch WaiSubsiteWithAuth master
Instance details Defined in Yesod.Core.Class.Dispatch Methods yesodSubDispatch :: YesodSubRunnerEnv WaiSubsiteWithAuth master -> Application #
Eq (Route WaiSubsiteWithAuth)
Instance details Defined in Yesod.Core.Types Methods (==) :: Route WaiSubsiteWithAuth -> Route WaiSubsiteWithAuth -> Bool # (/=) :: Route WaiSubsiteWithAuth -> Route WaiSubsiteWithAuth -> Bool #
Ord (Route WaiSubsiteWithAuth)
Instance details Defined in Yesod.Core.Types Methods compare :: Route WaiSubsiteWithAuth -> Route WaiSubsiteWithAuth -> Ordering # (<) :: Route WaiSubsiteWithAuth -> Route WaiSubsiteWithAuth -> Bool # (<=) :: Route WaiSubsiteWithAuth -> Route WaiSubsiteWithAuth -> Bool # (>) :: Route WaiSubsiteWithAuth -> Route WaiSubsiteWithAuth -> Bool # (>=) :: Route WaiSubsiteWithAuth -> Route WaiSubsiteWithAuth -> Bool # max :: Route WaiSubsiteWithAuth -> Route WaiSubsiteWithAuth -> Route WaiSubsiteWithAuth # min :: Route WaiSubsiteWithAuth -> Route WaiSubsiteWithAuth -> Route WaiSubsiteWithAuth #
Read (Route WaiSubsiteWithAuth)
Instance details Defined in Yesod.Core.Types Methods readsPrec :: Int -> ReadS (Route WaiSubsiteWithAuth) # readList :: ReadS [Route WaiSubsiteWithAuth] # readPrec :: ReadPrec (Route WaiSubsiteWithAuth) # readListPrec :: ReadPrec [Route WaiSubsiteWithAuth] #
Show (Route WaiSubsiteWithAuth)
Instance details Defined in Yesod.Core.Types Methods showsPrec :: Int -> Route WaiSubsiteWithAuth -> ShowS # show :: Route WaiSubsiteWithAuth -> String # showList :: [Route WaiSubsiteWithAuth] -> ShowS #
data Route WaiSubsiteWithAuth
Instance details Defined in Yesod.Core.Types data Route WaiSubsiteWithAuth = WaiSubsiteWithAuthRoute [Text] [(Text, Text)]

newtype WaiSubsite #

Wrap up a normal WAI application as a Yesod subsite. Ignore parent site's middleware and isAuthorized.

Constructors

WaiSubsite
Fields runWaiSubsite :: Application

Instances

Instances details

ParseRoute WaiSubsite
Instance details Defined in Yesod.Core.Types Methods parseRoute :: ([Text], [(Text, Text)]) -> Maybe (Route WaiSubsite) #
RenderRoute WaiSubsite
Instance details Defined in Yesod.Core.Types Associated Types data Route WaiSubsite # Methods renderRoute :: Route WaiSubsite -> ([Text], [(Text, Text)]) #
YesodSubDispatch WaiSubsite master
Instance details Defined in Yesod.Core.Class.Dispatch Methods yesodSubDispatch :: YesodSubRunnerEnv WaiSubsite master -> Application #
Eq (Route WaiSubsite)
Instance details Defined in Yesod.Core.Types Methods (==) :: Route WaiSubsite -> Route WaiSubsite -> Bool # (/=) :: Route WaiSubsite -> Route WaiSubsite -> Bool #
Ord (Route WaiSubsite)
Instance details Defined in Yesod.Core.Types Methods compare :: Route WaiSubsite -> Route WaiSubsite -> Ordering # (<) :: Route WaiSubsite -> Route WaiSubsite -> Bool # (<=) :: Route WaiSubsite -> Route WaiSubsite -> Bool # (>) :: Route WaiSubsite -> Route WaiSubsite -> Bool # (>=) :: Route WaiSubsite -> Route WaiSubsite -> Bool # max :: Route WaiSubsite -> Route WaiSubsite -> Route WaiSubsite # min :: Route WaiSubsite -> Route WaiSubsite -> Route WaiSubsite #
Read (Route WaiSubsite)
Instance details Defined in Yesod.Core.Types Methods readsPrec :: Int -> ReadS (Route WaiSubsite) # readList :: ReadS [Route WaiSubsite] # readPrec :: ReadPrec (Route WaiSubsite) # readListPrec :: ReadPrec [Route WaiSubsite] #
Show (Route WaiSubsite)
Instance details Defined in Yesod.Core.Types Methods showsPrec :: Int -> Route WaiSubsite -> ShowS # show :: Route WaiSubsite -> String # showList :: [Route WaiSubsite] -> ShowS #
data Route WaiSubsite
Instance details Defined in Yesod.Core.Types data Route WaiSubsite = WaiSubsiteRoute [Text] [(Text, Text)]

type Texts = [Text] #

type BottomOfHeadAsync master #

Arguments

= [Text]	urls to load asynchronously
-> Maybe (HtmlUrl (Route master))	widget of js to run on async completion
-> HtmlUrl (Route master)	widget to insert at the bottom of head

data ScriptLoadPosition master #

Constructors

BottomOfBody
BottomOfHeadBlocking
BottomOfHeadAsync !(BottomOfHeadAsync master)

data AuthResult #

Constructors

Authorized
AuthenticationRequired
Unauthorized !Text

Instances

Instances details

Eq AuthResult
Instance details Defined in Yesod.Core.Types Methods (==) :: AuthResult -> AuthResult -> Bool # (/=) :: AuthResult -> AuthResult -> Bool #
Read AuthResult
Instance details Defined in Yesod.Core.Types Methods readsPrec :: Int -> ReadS AuthResult # readList :: ReadS [AuthResult] # readPrec :: ReadPrec AuthResult # readListPrec :: ReadPrec [AuthResult] #
Show AuthResult
Instance details Defined in Yesod.Core.Types Methods showsPrec :: Int -> AuthResult -> ShowS # show :: AuthResult -> String # showList :: [AuthResult] -> ShowS #

data Approot master #

How to determine the root of the application for constructing URLs.

Note that future versions of Yesod may add new constructors without bumping the major version number. As a result, you should not pattern match on Approot values.

Constructors

ApprootRelative	No application root.
ApprootStatic !Text
ApprootMaster !(master -> Text)
ApprootRequest !(master -> Request -> Text)

data FileUpload #

Constructors

FileUploadMemory !(BackEnd ByteString)
FileUploadDisk !(InternalState -> BackEnd FilePath)
FileUploadSource !(BackEnd (ConduitT () ByteString (ResourceT IO) ()))

data FileInfo #

type RequestBodyContents = ([(Text, Text)], [(Text, FileInfo)]) #

A tuple containing both the POST parameters and submitted files.

data YesodRequest #

The parsed request information. This type augments the standard WAI Request with additional information.

Constructors

YesodRequest

Fields

reqGetParams :: ![(Text, Text)]
Same as queryString, but decoded to Text.
reqCookies :: ![(Text, Text)]
reqWaiRequest :: !Request
reqLangs :: ![Text]
Languages which the client supports. This is an ordered list by preference.
reqToken :: !(Maybe Text)
A random, session-specific token used to prevent CSRF attacks.
reqSession :: !SessionMap
Initial session sent from the client.
Since 1.2.0
reqAccept :: ![ContentType]
An ordered list of the accepted content types.
Since 1.2.0

newtype SessionBackend #

Constructors

SessionBackend
Fields sbLoadSession :: Request -> IO (SessionMap, SaveSession) Return the session data and a function to save the session

type SessionMap = Map Text ByteString #

clientSessionDateCacher #

Arguments

:: NominalDiffTime	Inactive session validity.
-> IO (IO ClientSessionDateCache, IO ())

class ToContent a => ToTypedContent a where #

Any type which can be converted to TypedContent.

Since 1.2.0

Methods

toTypedContent :: a -> TypedContent #

Instances

Instances details

ToTypedContent ()
Instance details Defined in Yesod.Core.Content Methods toTypedContent :: () -> TypedContent #
ToTypedContent Text
Instance details Defined in Yesod.Core.Content Methods toTypedContent :: Text -> TypedContent #
ToTypedContent Encoding
Instance details Defined in Yesod.Core.Content Methods toTypedContent :: Encoding -> TypedContent #
ToTypedContent Value
Instance details Defined in Yesod.Core.Content Methods toTypedContent :: Value -> TypedContent #
ToTypedContent Text
Instance details Defined in Yesod.Core.Content Methods toTypedContent :: Text -> TypedContent #
ToTypedContent Html
Instance details Defined in Yesod.Core.Content Methods toTypedContent :: Html -> TypedContent #
ToTypedContent Css
Instance details Defined in Yesod.Core.Content Methods toTypedContent :: Css -> TypedContent #
ToTypedContent Javascript
Instance details Defined in Yesod.Core.Content Methods toTypedContent :: Javascript -> TypedContent #
ToTypedContent RepXml
Instance details Defined in Yesod.Core.Content Methods toTypedContent :: RepXml -> TypedContent #
ToTypedContent RepPlain
Instance details Defined in Yesod.Core.Content Methods toTypedContent :: RepPlain -> TypedContent #
ToTypedContent RepJson
Instance details Defined in Yesod.Core.Content Methods toTypedContent :: RepJson -> TypedContent #
ToTypedContent TypedContent
Instance details Defined in Yesod.Core.Content Methods toTypedContent :: TypedContent -> TypedContent #
ToTypedContent [Char]
Instance details Defined in Yesod.Core.Content Methods toTypedContent :: [Char] -> TypedContent #
ToTypedContent a => ToTypedContent (DontFullyEvaluate a)
Instance details Defined in Yesod.Core.Content Methods toTypedContent :: DontFullyEvaluate a -> TypedContent #
ToTypedContent (JSONResponse a)
Instance details Defined in Yesod.Core.Content Methods toTypedContent :: JSONResponse a -> TypedContent #
ToTypedContent (ContentType, Content)
Instance details Defined in Yesod.Core.Content Methods toTypedContent :: (ContentType, Content) -> TypedContent #

class ToTypedContent a => HasContentType a where #

Methods

getContentType :: Monad m => m a -> ContentType #

Instances

Instances details

HasContentType Text
Instance details Defined in Yesod.Core.Content Methods getContentType :: Monad m => m Text -> ContentType #
HasContentType Encoding
Instance details Defined in Yesod.Core.Content Methods getContentType :: Monad m => m Encoding -> ContentType #
HasContentType Value
Instance details Defined in Yesod.Core.Content Methods getContentType :: Monad m => m Value -> ContentType #
HasContentType Text
Instance details Defined in Yesod.Core.Content Methods getContentType :: Monad m => m Text -> ContentType #
HasContentType Html
Instance details Defined in Yesod.Core.Content Methods getContentType :: Monad m => m Html -> ContentType #
HasContentType Css
Instance details Defined in Yesod.Core.Content Methods getContentType :: Monad m => m Css -> ContentType #
HasContentType Javascript
Instance details Defined in Yesod.Core.Content Methods getContentType :: Monad m => m Javascript -> ContentType #
HasContentType RepXml
Instance details Defined in Yesod.Core.Content Methods getContentType :: Monad m => m RepXml -> ContentType #
HasContentType RepPlain
Instance details Defined in Yesod.Core.Content Methods getContentType :: Monad m => m RepPlain -> ContentType #
HasContentType RepJson
Instance details Defined in Yesod.Core.Content Methods getContentType :: Monad m => m RepJson -> ContentType #
HasContentType a => HasContentType (DontFullyEvaluate a)
Instance details Defined in Yesod.Core.Content Methods getContentType :: Monad m => m (DontFullyEvaluate a) -> ContentType #
HasContentType (JSONResponse a)
Instance details Defined in Yesod.Core.Content Methods getContentType :: Monad m => m (JSONResponse a) -> ContentType #

class ToFlushBuilder a where #

A class for all data which can be sent in a streaming response. Note that for textual data, instances must use UTF-8 encoding.

Since 1.2.0

Methods

toFlushBuilder :: a -> Flush Builder #

Instances

Instances details

ToFlushBuilder String
Instance details Defined in Yesod.Core.Content Methods toFlushBuilder :: String -> Flush Builder #
ToFlushBuilder ByteString
Instance details Defined in Yesod.Core.Content Methods toFlushBuilder :: ByteString -> Flush Builder #
ToFlushBuilder ByteString
Instance details Defined in Yesod.Core.Content Methods toFlushBuilder :: ByteString -> Flush Builder #
ToFlushBuilder Builder
Instance details Defined in Yesod.Core.Content Methods toFlushBuilder :: Builder -> Flush Builder #
ToFlushBuilder Text
Instance details Defined in Yesod.Core.Content Methods toFlushBuilder :: Text -> Flush Builder #
ToFlushBuilder Text
Instance details Defined in Yesod.Core.Content Methods toFlushBuilder :: Text -> Flush Builder #
ToFlushBuilder Html
Instance details Defined in Yesod.Core.Content Methods toFlushBuilder :: Html -> Flush Builder #
ToFlushBuilder (Flush String)
Instance details Defined in Yesod.Core.Content Methods toFlushBuilder :: Flush String -> Flush Builder #
ToFlushBuilder (Flush ByteString)
Instance details Defined in Yesod.Core.Content Methods toFlushBuilder :: Flush ByteString -> Flush Builder #
ToFlushBuilder (Flush ByteString)
Instance details Defined in Yesod.Core.Content Methods toFlushBuilder :: Flush ByteString -> Flush Builder #
ToFlushBuilder (Flush Builder)
Instance details Defined in Yesod.Core.Content Methods toFlushBuilder :: Flush Builder -> Flush Builder #
ToFlushBuilder (Flush Text)
Instance details Defined in Yesod.Core.Content Methods toFlushBuilder :: Flush Text -> Flush Builder #
ToFlushBuilder (Flush Text)
Instance details Defined in Yesod.Core.Content Methods toFlushBuilder :: Flush Text -> Flush Builder #
ToFlushBuilder (Flush Html)
Instance details Defined in Yesod.Core.Content Methods toFlushBuilder :: Flush Html -> Flush Builder #

class ToContent a where #

Anything which can be converted into Content. Most of the time, you will want to use the ContentBuilder constructor. An easier approach will be to use a pre-defined toContent function, such as converting your data into a lazy bytestring and then calling toContent on that.

Please note that the built-in instances for lazy data structures (String, lazy ByteString, lazy Text and Html) will not automatically include the content length for the ContentBuilder constructor.

Methods

toContent :: a -> Content #

Instances

Instances details

ToContent ()
Instance details Defined in Yesod.Core.Content Methods toContent :: () -> Content #
ToContent String
Instance details Defined in Yesod.Core.Content Methods toContent :: String -> Content #
ToContent ByteString
Instance details Defined in Yesod.Core.Content Methods toContent :: ByteString -> Content #
ToContent ByteString
Instance details Defined in Yesod.Core.Content Methods toContent :: ByteString -> Content #
ToContent Builder
Instance details Defined in Yesod.Core.Content Methods toContent :: Builder -> Content #
ToContent Text
Instance details Defined in Yesod.Core.Content Methods toContent :: Text -> Content #
ToContent Encoding
Instance details Defined in Yesod.Core.Content Methods toContent :: Encoding -> Content #
ToContent Value
Instance details Defined in Yesod.Core.Content Methods toContent :: Value -> Content #
ToContent Text
Instance details Defined in Yesod.Core.Content Methods toContent :: Text -> Content #
ToContent Html
Instance details Defined in Yesod.Core.Content Methods toContent :: Html -> Content #
ToContent Css
Instance details Defined in Yesod.Core.Content Methods toContent :: Css -> Content #
ToContent Javascript
Instance details Defined in Yesod.Core.Content Methods toContent :: Javascript -> Content #
ToContent RepXml
Instance details Defined in Yesod.Core.Content Methods toContent :: RepXml -> Content #
ToContent RepPlain
Instance details Defined in Yesod.Core.Content Methods toContent :: RepPlain -> Content #
ToContent RepJson
Instance details Defined in Yesod.Core.Content Methods toContent :: RepJson -> Content #
ToContent TypedContent
Instance details Defined in Yesod.Core.Content Methods toContent :: TypedContent -> Content #
ToContent Content
Instance details Defined in Yesod.Core.Content Methods toContent :: Content -> Content #
ToContent a => ToContent (DontFullyEvaluate a)
Instance details Defined in Yesod.Core.Content Methods toContent :: DontFullyEvaluate a -> Content #
ToContent (JSONResponse a)
Instance details Defined in Yesod.Core.Content Methods toContent :: JSONResponse a -> Content #
ToContent (ContentType, Content)
Instance details Defined in Yesod.Core.Content Methods toContent :: (ContentType, Content) -> Content #
ToFlushBuilder builder => ToContent (ConduitT () builder (ResourceT IO) ())
Instance details Defined in Yesod.Core.Content Methods toContent :: ConduitT () builder (ResourceT IO) () -> Content #
ToFlushBuilder builder => ToContent (SealedConduitT () builder (ResourceT IO) ())
Instance details Defined in Yesod.Core.Content Methods toContent :: SealedConduitT () builder (ResourceT IO) () -> Content #
ToFlushBuilder builder => ToContent (Pipe () () builder () (ResourceT IO) ())
Instance details Defined in Yesod.Core.Content Methods toContent :: Pipe () () builder () (ResourceT IO) () -> Content #

emptyContent :: Content #

Zero-length enumerator.

repJson :: ToContent a => a -> RepJson #

repPlain :: ToContent a => a -> RepPlain #

repXml :: ToContent a => a -> RepXml #

typeHtml :: ContentType #

typePlain :: ContentType #

typeJson :: ContentType #

typeXml :: ContentType #

typeAtom :: ContentType #

typeRss :: ContentType #

typeJpeg :: ContentType #

typePng :: ContentType #

typeGif :: ContentType #

typeSvg :: ContentType #

typeJavascript :: ContentType #

typeCss :: ContentType #

typeFlv :: ContentType #

typeOgv :: ContentType #

typeOctet :: ContentType #

simpleContentType :: ContentType -> ContentType #

Removes "extra" information at the end of a content type string. In particular, removes everything after the semicolon, if present.

For example, "text/html; charset=utf-8" is commonly used to specify the character encoding for HTML data. This function would return "text/html".

contentTypeTypes :: ContentType -> (ByteString, ByteString) #

Give just the media types as a pair.

For example, "text/html; charset=utf-8" returns ("text", "html")

class MonadHandler m => MonadWidget (m :: Type -> Type) where #

Methods

liftWidget :: WidgetFor (HandlerSite m) a -> m a #

Instances

Instances details

MonadWidget m => MonadWidget (MaybeT m)
Instance details Defined in Yesod.Core.Class.Handler Methods liftWidget :: WidgetFor (HandlerSite (MaybeT m)) a -> MaybeT m a #
MonadWidget m => MonadWidget (ListT m)
Instance details Defined in Yesod.Core.Class.Handler Methods liftWidget :: WidgetFor (HandlerSite (ListT m)) a -> ListT m a #
MonadWidget (WidgetFor site)
Instance details Defined in Yesod.Core.Class.Handler Methods liftWidget :: WidgetFor (HandlerSite (WidgetFor site)) a -> WidgetFor site a #
MonadWidget m => MonadWidget (IdentityT m)
Instance details Defined in Yesod.Core.Class.Handler Methods liftWidget :: WidgetFor (HandlerSite (IdentityT m)) a -> IdentityT m a #
(Monoid w, MonadWidget m) => MonadWidget (WriterT w m)
Instance details Defined in Yesod.Core.Class.Handler Methods liftWidget :: WidgetFor (HandlerSite (WriterT w m)) a -> WriterT w m a #
(Monoid w, MonadWidget m) => MonadWidget (WriterT w m)
Instance details Defined in Yesod.Core.Class.Handler Methods liftWidget :: WidgetFor (HandlerSite (WriterT w m)) a -> WriterT w m a #
MonadWidget m => MonadWidget (StateT s m)
Instance details Defined in Yesod.Core.Class.Handler Methods liftWidget :: WidgetFor (HandlerSite (StateT s m)) a -> StateT s m a #
MonadWidget m => MonadWidget (StateT s m)
Instance details Defined in Yesod.Core.Class.Handler Methods liftWidget :: WidgetFor (HandlerSite (StateT s m)) a -> StateT s m a #
MonadWidget m => MonadWidget (ReaderT r m)
Instance details Defined in Yesod.Core.Class.Handler Methods liftWidget :: WidgetFor (HandlerSite (ReaderT r m)) a -> ReaderT r m a #
MonadWidget m => MonadWidget (ExceptT e m)
Instance details Defined in Yesod.Core.Class.Handler Methods liftWidget :: WidgetFor (HandlerSite (ExceptT e m)) a -> ExceptT e m a #
MonadWidget m => MonadWidget (ConduitM i o m)
Instance details Defined in Yesod.Core.Class.Handler Methods liftWidget :: WidgetFor (HandlerSite (ConduitM i o m)) a -> ConduitM i o m a #
(Monoid w, MonadWidget m) => MonadWidget (RWST r w s m)
Instance details Defined in Yesod.Core.Class.Handler Methods liftWidget :: WidgetFor (HandlerSite (RWST r w s m)) a -> RWST r w s m a #
(Monoid w, MonadWidget m) => MonadWidget (RWST r w s m)
Instance details Defined in Yesod.Core.Class.Handler Methods liftWidget :: WidgetFor (HandlerSite (RWST r w s m)) a -> RWST r w s m a #
MonadWidget m => MonadWidget (Pipe l i o u m)
Instance details Defined in Yesod.Core.Class.Handler Methods liftWidget :: WidgetFor (HandlerSite (Pipe l i o u m)) a -> Pipe l i o u m a #

class (MonadResource m, MonadLogger m) => MonadHandler (m :: Type -> Type) where #

Associated Types

type HandlerSite (m :: Type -> Type) #

type SubHandlerSite (m :: Type -> Type) #

Methods

liftHandler :: HandlerFor (HandlerSite m) a -> m a #

liftSubHandler :: SubHandlerFor (SubHandlerSite m) (HandlerSite m) a -> m a #

Instances

Instances details

MonadHandler m => MonadHandler (MaybeT m)
Instance details Defined in Yesod.Core.Class.Handler Associated Types type HandlerSite (MaybeT m) # type SubHandlerSite (MaybeT m) # Methods liftHandler :: HandlerFor (HandlerSite (MaybeT m)) a -> MaybeT m a # liftSubHandler :: SubHandlerFor (SubHandlerSite (MaybeT m)) (HandlerSite (MaybeT m)) a -> MaybeT m a #
MonadHandler m => MonadHandler (ListT m)
Instance details Defined in Yesod.Core.Class.Handler Associated Types type HandlerSite (ListT m) # type SubHandlerSite (ListT m) # Methods liftHandler :: HandlerFor (HandlerSite (ListT m)) a -> ListT m a # liftSubHandler :: SubHandlerFor (SubHandlerSite (ListT m)) (HandlerSite (ListT m)) a -> ListT m a #
MonadHandler (WidgetFor site)
Instance details Defined in Yesod.Core.Class.Handler Associated Types type HandlerSite (WidgetFor site) # type SubHandlerSite (WidgetFor site) # Methods liftHandler :: HandlerFor (HandlerSite (WidgetFor site)) a -> WidgetFor site a # liftSubHandler :: SubHandlerFor (SubHandlerSite (WidgetFor site)) (HandlerSite (WidgetFor site)) a -> WidgetFor site a #
MonadHandler (HandlerFor site)
Instance details Defined in Yesod.Core.Class.Handler Associated Types type HandlerSite (HandlerFor site) # type SubHandlerSite (HandlerFor site) # Methods liftHandler :: HandlerFor (HandlerSite (HandlerFor site)) a -> HandlerFor site a # liftSubHandler :: SubHandlerFor (SubHandlerSite (HandlerFor site)) (HandlerSite (HandlerFor site)) a -> HandlerFor site a #
MonadHandler m => MonadHandler (IdentityT m)
Instance details Defined in Yesod.Core.Class.Handler Associated Types type HandlerSite (IdentityT m) # type SubHandlerSite (IdentityT m) # Methods liftHandler :: HandlerFor (HandlerSite (IdentityT m)) a -> IdentityT m a # liftSubHandler :: SubHandlerFor (SubHandlerSite (IdentityT m)) (HandlerSite (IdentityT m)) a -> IdentityT m a #
(Monoid w, MonadHandler m) => MonadHandler (WriterT w m)
Instance details Defined in Yesod.Core.Class.Handler Associated Types type HandlerSite (WriterT w m) # type SubHandlerSite (WriterT w m) # Methods liftHandler :: HandlerFor (HandlerSite (WriterT w m)) a -> WriterT w m a # liftSubHandler :: SubHandlerFor (SubHandlerSite (WriterT w m)) (HandlerSite (WriterT w m)) a -> WriterT w m a #
(Monoid w, MonadHandler m) => MonadHandler (WriterT w m)
Instance details Defined in Yesod.Core.Class.Handler Associated Types type HandlerSite (WriterT w m) # type SubHandlerSite (WriterT w m) # Methods liftHandler :: HandlerFor (HandlerSite (WriterT w m)) a -> WriterT w m a # liftSubHandler :: SubHandlerFor (SubHandlerSite (WriterT w m)) (HandlerSite (WriterT w m)) a -> WriterT w m a #
MonadHandler m => MonadHandler (StateT s m)
Instance details Defined in Yesod.Core.Class.Handler Associated Types type HandlerSite (StateT s m) # type SubHandlerSite (StateT s m) # Methods liftHandler :: HandlerFor (HandlerSite (StateT s m)) a -> StateT s m a # liftSubHandler :: SubHandlerFor (SubHandlerSite (StateT s m)) (HandlerSite (StateT s m)) a -> StateT s m a #
MonadHandler m => MonadHandler (StateT s m)
Instance details Defined in Yesod.Core.Class.Handler Associated Types type HandlerSite (StateT s m) # type SubHandlerSite (StateT s m) # Methods liftHandler :: HandlerFor (HandlerSite (StateT s m)) a -> StateT s m a # liftSubHandler :: SubHandlerFor (SubHandlerSite (StateT s m)) (HandlerSite (StateT s m)) a -> StateT s m a #
MonadHandler m => MonadHandler (ReaderT r m)
Instance details Defined in Yesod.Core.Class.Handler Associated Types type HandlerSite (ReaderT r m) # type SubHandlerSite (ReaderT r m) # Methods liftHandler :: HandlerFor (HandlerSite (ReaderT r m)) a -> ReaderT r m a # liftSubHandler :: SubHandlerFor (SubHandlerSite (ReaderT r m)) (HandlerSite (ReaderT r m)) a -> ReaderT r m a #
MonadHandler m => MonadHandler (ExceptT e m)
Instance details Defined in Yesod.Core.Class.Handler Associated Types type HandlerSite (ExceptT e m) # type SubHandlerSite (ExceptT e m) # Methods liftHandler :: HandlerFor (HandlerSite (ExceptT e m)) a -> ExceptT e m a # liftSubHandler :: SubHandlerFor (SubHandlerSite (ExceptT e m)) (HandlerSite (ExceptT e m)) a -> ExceptT e m a #
MonadHandler (SubHandlerFor sub master)
Instance details Defined in Yesod.Core.Class.Handler Associated Types type HandlerSite (SubHandlerFor sub master) # type SubHandlerSite (SubHandlerFor sub master) # Methods liftHandler :: HandlerFor (HandlerSite (SubHandlerFor sub master)) a -> SubHandlerFor sub master a # liftSubHandler :: SubHandlerFor (SubHandlerSite (SubHandlerFor sub master)) (HandlerSite (SubHandlerFor sub master)) a -> SubHandlerFor sub master a #
MonadHandler m => MonadHandler (ConduitM i o m)
Instance details Defined in Yesod.Core.Class.Handler Associated Types type HandlerSite (ConduitM i o m) # type SubHandlerSite (ConduitM i o m) # Methods liftHandler :: HandlerFor (HandlerSite (ConduitM i o m)) a -> ConduitM i o m a # liftSubHandler :: SubHandlerFor (SubHandlerSite (ConduitM i o m)) (HandlerSite (ConduitM i o m)) a -> ConduitM i o m a #
(Monoid w, MonadHandler m) => MonadHandler (RWST r w s m)
Instance details Defined in Yesod.Core.Class.Handler Associated Types type HandlerSite (RWST r w s m) # type SubHandlerSite (RWST r w s m) # Methods liftHandler :: HandlerFor (HandlerSite (RWST r w s m)) a -> RWST r w s m a # liftSubHandler :: SubHandlerFor (SubHandlerSite (RWST r w s m)) (HandlerSite (RWST r w s m)) a -> RWST r w s m a #
(Monoid w, MonadHandler m) => MonadHandler (RWST r w s m)
Instance details Defined in Yesod.Core.Class.Handler Associated Types type HandlerSite (RWST r w s m) # type SubHandlerSite (RWST r w s m) # Methods liftHandler :: HandlerFor (HandlerSite (RWST r w s m)) a -> RWST r w s m a # liftSubHandler :: SubHandlerFor (SubHandlerSite (RWST r w s m)) (HandlerSite (RWST r w s m)) a -> RWST r w s m a #
MonadHandler m => MonadHandler (Pipe l i o u m)
Instance details Defined in Yesod.Core.Class.Handler Associated Types type HandlerSite (Pipe l i o u m) # type SubHandlerSite (Pipe l i o u m) # Methods liftHandler :: HandlerFor (HandlerSite (Pipe l i o u m)) a -> Pipe l i o u m a # liftSubHandler :: SubHandlerFor (SubHandlerSite (Pipe l i o u m)) (HandlerSite (Pipe l i o u m)) a -> Pipe l i o u m a #

type family HandlerSite (m :: Type -> Type) #

Instances

Instances details

type HandlerSite (MaybeT m)
Instance details Defined in Yesod.Core.Class.Handler type HandlerSite (MaybeT m) = HandlerSite m
type HandlerSite (ListT m)
Instance details Defined in Yesod.Core.Class.Handler type HandlerSite (ListT m) = HandlerSite m
type HandlerSite (WidgetFor site)
Instance details Defined in Yesod.Core.Class.Handler type HandlerSite (WidgetFor site) = site
type HandlerSite (HandlerFor site)
Instance details Defined in Yesod.Core.Class.Handler type HandlerSite (HandlerFor site) = site
type HandlerSite (IdentityT m)
Instance details Defined in Yesod.Core.Class.Handler type HandlerSite (IdentityT m) = HandlerSite m
type HandlerSite (WriterT w m)
Instance details Defined in Yesod.Core.Class.Handler type HandlerSite (WriterT w m) = HandlerSite m
type HandlerSite (WriterT w m)
Instance details Defined in Yesod.Core.Class.Handler type HandlerSite (WriterT w m) = HandlerSite m
type HandlerSite (StateT s m)
Instance details Defined in Yesod.Core.Class.Handler type HandlerSite (StateT s m) = HandlerSite m
type HandlerSite (StateT s m)
Instance details Defined in Yesod.Core.Class.Handler type HandlerSite (StateT s m) = HandlerSite m
type HandlerSite (ReaderT r m)
Instance details Defined in Yesod.Core.Class.Handler type HandlerSite (ReaderT r m) = HandlerSite m
type HandlerSite (ExceptT e m)
Instance details Defined in Yesod.Core.Class.Handler type HandlerSite (ExceptT e m) = HandlerSite m
type HandlerSite (SubHandlerFor sub master)
Instance details Defined in Yesod.Core.Class.Handler type HandlerSite (SubHandlerFor sub master) = master
type HandlerSite (ConduitM i o m)
Instance details Defined in Yesod.Core.Class.Handler type HandlerSite (ConduitM i o m) = HandlerSite m
type HandlerSite (RWST r w s m)
Instance details Defined in Yesod.Core.Class.Handler type HandlerSite (RWST r w s m) = HandlerSite m
type HandlerSite (RWST r w s m)
Instance details Defined in Yesod.Core.Class.Handler type HandlerSite (RWST r w s m) = HandlerSite m
type HandlerSite (Pipe l i o u m)
Instance details Defined in Yesod.Core.Class.Handler type HandlerSite (Pipe l i o u m) = HandlerSite m

type family SubHandlerSite (m :: Type -> Type) #

Instances

Instances details

type SubHandlerSite (MaybeT m)
Instance details Defined in Yesod.Core.Class.Handler type SubHandlerSite (MaybeT m) = SubHandlerSite m
type SubHandlerSite (ListT m)
Instance details Defined in Yesod.Core.Class.Handler type SubHandlerSite (ListT m) = SubHandlerSite m
type SubHandlerSite (WidgetFor site)
Instance details Defined in Yesod.Core.Class.Handler type SubHandlerSite (WidgetFor site) = site
type SubHandlerSite (HandlerFor site)
Instance details Defined in Yesod.Core.Class.Handler type SubHandlerSite (HandlerFor site) = site
type SubHandlerSite (IdentityT m)
Instance details Defined in Yesod.Core.Class.Handler type SubHandlerSite (IdentityT m) = SubHandlerSite m
type SubHandlerSite (WriterT w m)
Instance details Defined in Yesod.Core.Class.Handler type SubHandlerSite (WriterT w m) = SubHandlerSite m
type SubHandlerSite (WriterT w m)
Instance details Defined in Yesod.Core.Class.Handler type SubHandlerSite (WriterT w m) = SubHandlerSite m
type SubHandlerSite (StateT s m)
Instance details Defined in Yesod.Core.Class.Handler type SubHandlerSite (StateT s m) = SubHandlerSite m
type SubHandlerSite (StateT s m)
Instance details Defined in Yesod.Core.Class.Handler type SubHandlerSite (StateT s m) = SubHandlerSite m
type SubHandlerSite (ReaderT r m)
Instance details Defined in Yesod.Core.Class.Handler type SubHandlerSite (ReaderT r m) = SubHandlerSite m
type SubHandlerSite (ExceptT e m)
Instance details Defined in Yesod.Core.Class.Handler type SubHandlerSite (ExceptT e m) = SubHandlerSite m
type SubHandlerSite (SubHandlerFor sub master)
Instance details Defined in Yesod.Core.Class.Handler type SubHandlerSite (SubHandlerFor sub master) = sub
type SubHandlerSite (ConduitM i o m)
Instance details Defined in Yesod.Core.Class.Handler type SubHandlerSite (ConduitM i o m) = SubHandlerSite m
type SubHandlerSite (RWST r w s m)
Instance details Defined in Yesod.Core.Class.Handler type SubHandlerSite (RWST r w s m) = SubHandlerSite m
type SubHandlerSite (RWST r w s m)
Instance details Defined in Yesod.Core.Class.Handler type SubHandlerSite (RWST r w s m) = SubHandlerSite m
type SubHandlerSite (Pipe l i o u m)
Instance details Defined in Yesod.Core.Class.Handler type SubHandlerSite (Pipe l i o u m) = SubHandlerSite m

data ProvidedRep (m :: Type -> Type) #

Internal representation of a single provided representation.

Since: yesod-core-1.2.0

data Fragment a b #

Add a fragment identifier to a route to be used when redirecting. For example:

redirect (NewsfeedR :#: storyId)

@since 1.2.9.

Constructors

a :#: b

Instances

Instances details

(RedirectUrl master a, PathPiece b) => RedirectUrl master (Fragment a b)
Instance details Defined in Yesod.Core.Handler Methods toTextUrl :: (MonadHandler m, HandlerSite m ~ master) => Fragment a b -> m Text #
(Show a, Show b) => Show (Fragment a b)
Instance details Defined in Yesod.Core.Handler Methods showsPrec :: Int -> Fragment a b -> ShowS # show :: Fragment a b -> String # showList :: [Fragment a b] -> ShowS #

class RedirectUrl master a where #

Some value which can be turned into a URL for redirects.

Methods

toTextUrl :: (MonadHandler m, HandlerSite m ~ master) => a -> m Text #

Converts the value to the URL and a list of query-string parameters.

Instances

Instances details

RedirectUrl master String
Instance details Defined in Yesod.Core.Handler Methods toTextUrl :: (MonadHandler m, HandlerSite m ~ master) => String -> m Text #
RedirectUrl master Text
Instance details Defined in Yesod.Core.Handler Methods toTextUrl :: (MonadHandler m, HandlerSite m ~ master) => Text -> m Text #
RedirectUrl master (Route master)
Instance details Defined in Yesod.Core.Handler Methods toTextUrl :: (MonadHandler m, HandlerSite m ~ master) => Route master -> m Text #
(RedirectUrl master a, PathPiece b) => RedirectUrl master (Fragment a b)
Instance details Defined in Yesod.Core.Handler Methods toTextUrl :: (MonadHandler m, HandlerSite m ~ master) => Fragment a b -> m Text #
(key ~ Text, val ~ Text) => RedirectUrl master (Route master, [(key, val)])
Instance details Defined in Yesod.Core.Handler Methods toTextUrl :: (MonadHandler m, HandlerSite m ~ master) => (Route master, [(key, val)]) -> m Text #
(key ~ Text, val ~ Text) => RedirectUrl master (Route master, Map key val)
Instance details Defined in Yesod.Core.Handler Methods toTextUrl :: (MonadHandler m, HandlerSite m ~ master) => (Route master, Map key val) -> m Text #

type HandlerT site (m :: Type -> Type) = HandlerFor site #

getRequest :: MonadHandler m => m YesodRequest #

runRequestBody :: MonadHandler m => m RequestBodyContents #

getYesod :: MonadHandler m => m (HandlerSite m) #

Get the master site application argument.

getsYesod :: MonadHandler m => (HandlerSite m -> a) -> m a #

Get a specific component of the master site application argument. Analogous to the gets function for operating on StateT.

getUrlRender :: MonadHandler m => m (Route (HandlerSite m) -> Text) #

Get the URL rendering function.

getUrlRenderParams :: MonadHandler m => m (Route (HandlerSite m) -> [(Text, Text)] -> Text) #

The URL rendering function with query-string parameters.

getPostParams :: MonadHandler m => m [(Text, Text)] #

Get all the post parameters passed to the handler. To also get the submitted files (if any), you have to use runRequestBody instead of this function.

Since: yesod-core-1.4.33

getCurrentRoute :: MonadHandler m => m (Maybe (Route (HandlerSite m))) #

Get the route requested by the user. If this is a 404 response- where the user requested an invalid route- this function will return Nothing.

handlerToIO :: MonadIO m => HandlerFor site (HandlerFor site a -> m a) #

Returns a function that runs HandlerFor actions inside IO.

Sometimes you want to run an inner HandlerFor action outside the control flow of an HTTP request (on the outer HandlerFor action). For example, you may want to spawn a new thread:

getFooR :: Handler RepHtml
getFooR = do
  runInnerHandler <- handlerToIO
  liftIO $ forkIO $ runInnerHandler $ do
    Code here runs inside HandlerFor but on a new thread.
    This is the inner HandlerFor.
    ...
  Code here runs inside the request's control flow.
  This is the outer HandlerFor.
  ...

Another use case for this function is creating a stream of server-sent events using HandlerFor actions (see yesod-eventsource).

Most of the environment from the outer HandlerFor is preserved on the inner HandlerFor, however:

The request body is cleared (otherwise it would be very difficult to prevent huge memory leaks).
The cache is cleared (see cached).

Changes to the response made inside the inner HandlerFor are ignored (e.g., session variables, cookies, response headers). This allows the inner HandlerFor to outlive the outer HandlerFor (e.g., on the forkIO example above, a response may be sent to the client without killing the new thread).

forkHandler #

Arguments

:: (SomeException -> HandlerFor site ())	error handler
-> HandlerFor site ()
-> HandlerFor site ()

forkIO for a Handler (run an action in the background)

Uses handlerToIO, liftResourceT, and resourceForkIO for correctness and efficiency

Since: yesod-core-1.2.8

redirect :: (MonadHandler m, RedirectUrl (HandlerSite m) url) => url -> m a #

Redirect to the given route. HTTP status code 303 for HTTP 1.1 clients and 302 for HTTP 1.0 This is the appropriate choice for a get-following-post technique, which should be the usual use case.

If you want direct control of the final status code, or need a different status code, please use redirectWith.

redirectWith :: (MonadHandler m, RedirectUrl (HandlerSite m) url) => Status -> url -> m a #

Redirect to the given URL with the specified status code.

setUltDest :: (MonadHandler m, RedirectUrl (HandlerSite m) url) => url -> m () #

Sets the ultimate destination variable to the given route.

An ultimate destination is stored in the user session and can be loaded later by redirectUltDest.

setUltDestCurrent :: MonadHandler m => m () #

Same as setUltDest, but uses the current page.

If this is a 404 handler, there is no current page, and then this call does nothing.

setUltDestReferer :: MonadHandler m => m () #

Sets the ultimate destination to the referer request header, if present.

This function will not overwrite an existing ultdest.

redirectUltDest #

Arguments

:: (RedirectUrl (HandlerSite m) url, MonadHandler m)
=> url	default destination if nothing in session
-> m a

Redirect to the ultimate destination in the user's session. Clear the value from the session.

The ultimate destination is set with setUltDest.

This function uses redirect, and thus will perform a temporary redirect to a GET request.

clearUltDest :: MonadHandler m => m () #

Remove a previously set ultimate destination. See setUltDest.

addMessage #

Arguments

:: MonadHandler m
=> Text	status
-> Html	message
-> m ()

Adds a status and message in the user's session.

See getMessages.

Since: yesod-core-1.4.20

addMessageI :: (MonadHandler m, RenderMessage (HandlerSite m) msg) => Text -> msg -> m () #

Adds a message in the user's session but uses RenderMessage to allow for i18n

See getMessages.

Since: yesod-core-1.4.20

getMessages :: MonadHandler m => m [(Text, Html)] #

Gets all messages in the user's session, and then clears the variable.

See addMessage.

Since: yesod-core-1.4.20

setMessage :: MonadHandler m => Html -> m () #

Calls addMessage with an empty status

setMessageI :: (MonadHandler m, RenderMessage (HandlerSite m) msg) => msg -> m () #

Calls addMessageI with an empty status

getMessage :: MonadHandler m => m (Maybe Html) #

Gets just the last message in the user's session, discards the rest and the status

sendFile :: MonadHandler m => ContentType -> FilePath -> m a #

Bypass remaining handler code and output the given file.

For some backends, this is more efficient than reading in the file to memory, since they can optimize file sending via a system call to sendfile.

sendFilePart #

Arguments

:: MonadHandler m
=> ContentType
-> FilePath
-> Integer	offset
-> Integer	count
-> m a

Same as sendFile, but only sends part of a file.

sendResponse :: (MonadHandler m, ToTypedContent c) => c -> m a #

Bypass remaining handler code and output the given content with a 200 status code.

sendResponseStatus :: (MonadHandler m, ToTypedContent c) => Status -> c -> m a #

Bypass remaining handler code and output the given content with the given status code.

sendStatusJSON :: (MonadHandler m, ToJSON c) => Status -> c -> m a #

Bypass remaining handler code and output the given JSON with the given status code.

Since: yesod-core-1.4.18

sendResponseCreated :: MonadHandler m => Route (HandlerSite m) -> m a #

Send a 201 Created response with the given route as the Location response header.

sendResponseNoContent :: MonadHandler m => m a #

Bypass remaining handler code and output no content with a 204 status code.

Since: yesod-core-1.6.9

sendWaiResponse :: MonadHandler m => Response -> m b #

Send a Response. Please note: this function is rarely necessary, and will disregard any changes to response headers and session that you have already specified. This function short-circuits. It should be considered only for very specific needs. If you are not sure if you need it, you don't.

sendWaiApplication :: MonadHandler m => Application -> m b #

Switch over to handling the current request with a WAI Application.

Since: yesod-core-1.2.17

sendRawResponseNoConduit :: (MonadHandler m, MonadUnliftIO m) => (IO ByteString -> (ByteString -> IO ()) -> m ()) -> m a #

Send a raw response without conduit. This is used for cases such as WebSockets. Requires WAI 3.0 or later, and a web server which supports raw responses (e.g., Warp).

Since: yesod-core-1.2.16

sendRawResponse :: (MonadHandler m, MonadUnliftIO m) => (ConduitT () ByteString IO () -> ConduitT ByteString Void IO () -> m ()) -> m a #

Send a raw response. This is used for cases such as WebSockets. Requires WAI 2.1 or later, and a web server which supports raw responses (e.g., Warp).

Since: yesod-core-1.2.7

notModified :: MonadHandler m => m a #

Send a 304 not modified response immediately. This is a short-circuiting action.

Since: yesod-core-1.4.4

notFound :: MonadHandler m => m a #

Return a 404 not found page. Also denotes no handler available.

badMethod :: MonadHandler m => m a #

Return a 405 method not supported page.

notAuthenticated :: MonadHandler m => m a #

Return a 401 status code

permissionDenied :: MonadHandler m => Text -> m a #

Return a 403 permission denied page.

permissionDeniedI :: (RenderMessage (HandlerSite m) msg, MonadHandler m) => msg -> m a #

Return a 403 permission denied page.

invalidArgs :: MonadHandler m => [Text] -> m a #

Return a 400 invalid arguments page.

invalidArgsI :: (MonadHandler m, RenderMessage (HandlerSite m) msg) => [msg] -> m a #

Return a 400 invalid arguments page.

setCookie :: MonadHandler m => SetCookie -> m () #

Set the cookie on the client.

getExpires #

Arguments

:: MonadIO m
=> Int	minutes
-> m UTCTime

Helper function for setCookieExpires value

deleteCookie #

Arguments

:: MonadHandler m
=> Text	key
-> Text	path
-> m ()

Unset the cookie on the client.

Note: although the value used for key and path is Text, you should only use ASCII values to be HTTP compliant.

setLanguage :: MonadHandler m => Text -> m () #

Set the language in the user session. Will show up in languages on the next request.

addContentDispositionFileName :: MonadHandler m => Text -> m () #

Set attachment file name.

Allows Unicode characters by encoding to UTF-8. Some modurn browser parse UTF-8 characters with out encoding setting. But, for example IE9 can't parse UTF-8 characters. This function use RFC 6266(RFC 5987)

Since: yesod-core-1.6.4

addHeader :: MonadHandler m => Text -> Text -> m () #

Set an arbitrary response header.

Note that, while the data type used here is Text, you must provide only ASCII value to be HTTP compliant.

Since: yesod-core-1.2.0

setHeader :: MonadHandler m => Text -> Text -> m () #

Deprecated synonym for addHeader.

replaceOrAddHeader :: MonadHandler m => Text -> Text -> m () #

Replace an existing header with a new value or add a new header if not present.

Note that, while the data type used here is Text, you must provide only ASCII value to be HTTP compliant.

Since: yesod-core-1.4.36

cacheSeconds :: MonadHandler m => Int -> m () #

Set the Cache-Control header to indicate this response should be cached for the given number of seconds.

neverExpires :: MonadHandler m => m () #

Set the Expires header to some date in 2037. In other words, this content is never (realistically) expired.

alreadyExpired :: MonadHandler m => m () #

Set an Expires header in the past, meaning this content should not be cached.

expiresAt :: MonadHandler m => UTCTime -> m () #

Set an Expires header to the given date.

setEtag :: MonadHandler m => Text -> m () #

Check the if-none-match header and, if it matches the given value, return a 304 not modified response. Otherwise, set the etag header to the given value.

Note that it is the responsibility of the caller to ensure that the provided value is a valid etag value, no sanity checking is performed by this function.

Since: yesod-core-1.4.4

setWeakEtag :: MonadHandler m => Text -> m () #

Check the if-none-match header and, if it matches the given value, return a 304 not modified response. Otherwise, set the etag header to the given value.

A weak etag is only expected to be semantically identical to the prior content, but doesn't have to be byte-for-byte identical. Therefore it can be useful for dynamically generated content that may be difficult to perform bytewise hashing upon.

Note that it is the responsibility of the caller to ensure that the provided value is a valid etag value, no sanity checking is performed by this function.

Since: yesod-core-1.4.37

setSession #

Arguments

:: MonadHandler m
=> Text	key
-> Text	value
-> m ()

Set a variable in the user's session.

The session is handled by the clientsession package: it sets an encrypted and hashed cookie on the client. This ensures that all data is secure and not tampered with.

setSessionBS :: MonadHandler m => Text -> ByteString -> m () #

Same as setSession, but uses binary data for the value.

deleteSession :: MonadHandler m => Text -> m () #

Unsets a session variable. See setSession.

clearSession :: MonadHandler m => m () #

Clear all session variables.

@since: 1.0.1

lookupSession :: MonadHandler m => Text -> m (Maybe Text) #

Lookup for session data.

lookupSessionBS :: MonadHandler m => Text -> m (Maybe ByteString) #

Lookup for session data in binary format.

getSession :: MonadHandler m => m SessionMap #

Get all session variables.

newIdent :: MonadHandler m => m Text #

Get a unique identifier.

redirectToPost :: (MonadHandler m, RedirectUrl (HandlerSite m) url) => url -> m a #

Redirect to a POST resource.

This is not technically a redirect; instead, it returns an HTML page with a POST form, and some Javascript to automatically submit the form. This can be useful when you need to post a plain link somewhere that needs to cause changes on the server.

hamletToRepHtml :: MonadHandler m => HtmlUrl (Route (HandlerSite m)) -> m Html #

Wraps the Content generated by hamletToContent in a RepHtml.

giveUrlRenderer :: MonadHandler m => ((Route (HandlerSite m) -> [(Text, Text)] -> Text) -> output) -> m output #

Deprecated synonym for withUrlRenderer.

Since: yesod-core-1.2.0

withUrlRenderer :: MonadHandler m => ((Route (HandlerSite m) -> [(Text, Text)] -> Text) -> output) -> m output #

Provide a URL rendering function to the given function and return the result. Useful for processing Shakespearean templates.

Since: yesod-core-1.2.20

waiRequest :: MonadHandler m => m Request #

Get the request's Request value.

getMessageRender :: (MonadHandler m, RenderMessage (HandlerSite m) message) => m (message -> Text) #

cached :: (MonadHandler m, Typeable a) => m a -> m a #

Use a per-request cache to avoid performing the same action multiple times. Values are stored by their type, the result of typeOf from Typeable. Therefore, you should use different newtype wrappers at each cache site.

For example, yesod-auth uses an un-exported newtype, CachedMaybeAuth and exports functions that utilize it such as maybeAuth. This means that another module can create its own newtype wrapper to cache the same type from a different action without any cache conflicts.

See the original announcement: http://www.yesodweb.com/blog/2013/03/yesod-1-2-cleaner-internals

Since: yesod-core-1.2.0

cacheGet :: (MonadHandler m, Typeable a) => m (Maybe a) #

Retrieves a value from the cache used by cached.

Since: yesod-core-1.6.10

cacheSet :: (MonadHandler m, Typeable a) => a -> m () #

Sets a value in the cache used by cached.

Since: yesod-core-1.6.10

cachedBy :: (MonadHandler m, Typeable a) => ByteString -> m a -> m a #

a per-request cache. just like cached. cached can only cache a single value per type. cachedBy stores multiple values per type by usage of a ByteString key

cached is ideal to cache an action that has only one value of a type, such as the session's current user cachedBy is required if the action has parameters and can return multiple values per type. You can turn those parameters into a ByteString cache key. For example, caching a lookup of a Link by a token where multiple token lookups might be performed.

Since: yesod-core-1.4.0

cacheByGet :: (MonadHandler m, Typeable a) => ByteString -> m (Maybe a) #

Retrieves a value from the cache used by cachedBy.

Since: yesod-core-1.6.10

cacheBySet :: (MonadHandler m, Typeable a) => ByteString -> a -> m () #

Sets a value in the cache used by cachedBy.

Since: yesod-core-1.6.10

languages :: MonadHandler m => m [Text] #

Get the list of supported languages supplied by the user.

Languages are determined based on the following (in descending order of preference):

The _LANG get parameter.
The _LANG user session variable.
The _LANG cookie.
Accept-Language HTTP header.

Yesod will seek the first language from the returned list matched with languages supporting by your application. This language will be used to render i18n templates. If a matching language is not found the default language will be used.

This is handled by parseWaiRequest (not exposed).

NOTE: Before version 1.6.19.0, this function prioritized the session variable above all other sources.

lookupHeader :: MonadHandler m => CI ByteString -> m (Maybe ByteString) #

Lookup a request header.

Since: yesod-core-1.2.2

lookupHeaders :: MonadHandler m => CI ByteString -> m [ByteString] #

Lookup a request header.

Since: yesod-core-1.2.2

lookupBasicAuth :: MonadHandler m => m (Maybe (Text, Text)) #

Lookup basic authentication data from Authorization header of request. Returns user name and password

Since: yesod-core-1.4.9

lookupBearerAuth :: MonadHandler m => m (Maybe Text) #

Lookup bearer authentication datafrom Authorization header of request. Returns bearer token value

Since: yesod-core-1.4.9

lookupGetParams :: MonadHandler m => Text -> m [Text] #

Lookup for GET parameters.

lookupGetParam :: MonadHandler m => Text -> m (Maybe Text) #

Lookup for GET parameters.

lookupPostParams :: (MonadResource m, MonadHandler m) => Text -> m [Text] #

Lookup for POST parameters.

lookupPostParam :: (MonadResource m, MonadHandler m) => Text -> m (Maybe Text) #

lookupFile :: MonadHandler m => Text -> m (Maybe FileInfo) #

Lookup for POSTed files.

lookupFiles :: MonadHandler m => Text -> m [FileInfo] #

Lookup for POSTed files.

lookupCookie :: MonadHandler m => Text -> m (Maybe Text) #

Lookup for cookie data.

lookupCookies :: MonadHandler m => Text -> m [Text] #

Lookup for cookie data.

selectRep :: MonadHandler m => Writer (Endo [ProvidedRep m]) () -> m TypedContent #

Select a representation to send to the client based on the representations provided inside this do-block. Should be used together with provideRep.

Since: yesod-core-1.2.0

provideRep :: (Monad m, HasContentType a) => m a -> Writer (Endo [ProvidedRep m]) () #

Provide a single representation to be used, based on the request of the client. Should be used together with selectRep.

Since: yesod-core-1.2.0

provideRepType :: (Monad m, ToContent a) => ContentType -> m a -> Writer (Endo [ProvidedRep m]) () #

Same as provideRep, but instead of determining the content type from the type of the value itself, you provide the content type separately. This can be a convenience instead of creating newtype wrappers for uncommonly used content types.

provideRepType "application/x-special-format" "This is the content"

Since: yesod-core-1.2.0

rawRequestBody :: forall (m :: Type -> Type) i. MonadHandler m => ConduitT i ByteString m () #

Stream in the raw request body without any parsing.

Since: yesod-core-1.2.0

fileSource :: forall (m :: Type -> Type). MonadResource m => FileInfo -> ConduitT () ByteString m () #

Stream the data from the file. Since Yesod 1.2, this has been generalized to work in any MonadResource.

fileSourceByteString :: MonadResource m => FileInfo -> m ByteString #

Extract a strict ByteString body from a FileInfo.

This function will block while reading the file.

do
    fileByteString <- fileSourceByteString fileInfo

Since: yesod-core-1.6.5

respond :: (Monad m, ToContent a) => ContentType -> a -> m TypedContent #

Provide a pure value for the response body.

respond ct = return . TypedContent ct . toContent

Since: yesod-core-1.2.0

respondSource :: ContentType -> ConduitT () (Flush Builder) (HandlerFor site) () -> HandlerFor site TypedContent #

Use a Source for the response body.

Note that, for ease of use, the underlying monad is a HandlerFor. This implies that you can run any HandlerFor action. However, since a streaming response occurs after the response headers have already been sent, some actions make no sense here. For example: short-circuit responses, setting headers, changing status codes, etc.

Since: yesod-core-1.2.0

sendChunk :: forall (m :: Type -> Type) a i. (Monad m, ToFlushBuilder a) => a -> ConduitT i (Flush Builder) m () #

In a streaming response, send a single chunk of data. This function works on most datatypes, such as ByteString and Html.

Since: yesod-core-1.2.0

sendFlush :: forall (m :: Type -> Type) i. Monad m => ConduitT i (Flush Builder) m () #

In a streaming response, send a flush command, causing all buffered data to be immediately sent to the client.

Since: yesod-core-1.2.0

sendChunkBS :: forall (m :: Type -> Type) i. Monad m => ByteString -> ConduitT i (Flush Builder) m () #

Type-specialized version of sendChunk for strict ByteStrings.

Since: yesod-core-1.2.0

sendChunkLBS :: forall (m :: Type -> Type) i. Monad m => ByteString -> ConduitT i (Flush Builder) m () #

Type-specialized version of sendChunk for lazy ByteStrings.

Since: yesod-core-1.2.0

sendChunkText :: forall (m :: Type -> Type) i. Monad m => Text -> ConduitT i (Flush Builder) m () #

Type-specialized version of sendChunk for strict Texts.

Since: yesod-core-1.2.0

sendChunkLazyText :: forall (m :: Type -> Type) i. Monad m => Text -> ConduitT i (Flush Builder) m () #

Type-specialized version of sendChunk for lazy Texts.

Since: yesod-core-1.2.0

sendChunkHtml :: forall (m :: Type -> Type) i. Monad m => Html -> ConduitT i (Flush Builder) m () #

Type-specialized version of sendChunk for Htmls.

Since: yesod-core-1.2.0

defaultCsrfCookieName :: ByteString #

The default cookie name for the CSRF token ("XSRF-TOKEN").

Since: yesod-core-1.4.14

setCsrfCookie :: MonadHandler m => m () #

Sets a cookie with a CSRF token, using defaultCsrfCookieName for the cookie name.

The cookie's path is set to /, making it valid for your whole website.

Since: yesod-core-1.4.14

setCsrfCookieWithCookie :: MonadHandler m => SetCookie -> m () #

Takes a SetCookie and overrides its value with a CSRF token, then sets the cookie.

Make sure to set the setCookiePath to the root path of your application, otherwise you'll generate a new CSRF token for every path of your app. If your app is run from from e.g. www.example.com/app1, use app1. The vast majority of sites will just use /.

Since: yesod-core-1.4.14

defaultCsrfHeaderName :: CI ByteString #

The default header name for the CSRF token ("X-XSRF-TOKEN").

Since: yesod-core-1.4.14

checkCsrfHeaderNamed :: MonadHandler m => CI ByteString -> m () #

Takes a header name to lookup a CSRF token. If the value doesn't match the token stored in the session, this function throws a PermissionDenied error.

Since: yesod-core-1.4.14

hasValidCsrfHeaderNamed :: MonadHandler m => CI ByteString -> m Bool #

Takes a header name to lookup a CSRF token, and returns whether the value matches the token stored in the session.

Since: yesod-core-1.4.14

defaultCsrfParamName :: Text #

The default parameter name for the CSRF token ("_token")

Since: yesod-core-1.4.14

checkCsrfParamNamed :: MonadHandler m => Text -> m () #

Takes a POST parameter name to lookup a CSRF token. If the value doesn't match the token stored in the session, this function throws a PermissionDenied error.

Since: yesod-core-1.4.14

hasValidCsrfParamNamed :: MonadHandler m => Text -> m Bool #

Takes a POST parameter name to lookup a CSRF token, and returns whether the value matches the token stored in the session.

Since: yesod-core-1.4.14

checkCsrfHeaderOrParam #

Arguments

:: (MonadHandler m, MonadLogger m)
=> CI ByteString	The header name to lookup the CSRF token
-> Text	The POST parameter name to lookup the CSRF token
-> m ()

Checks that a valid CSRF token is present in either the request headers or POST parameters. If the value doesn't match the token stored in the session, this function throws a PermissionDenied error.

Since: yesod-core-1.4.14

getSubYesod :: MonadHandler m => m (SubHandlerSite m) #

getRouteToParent :: MonadHandler m => m (Route (SubHandlerSite m) -> Route (HandlerSite m)) #

getSubCurrentRoute :: MonadHandler m => m (Maybe (Route (SubHandlerSite m))) #

class ToWidgetHead site a where #

Methods

toWidgetHead :: (MonadWidget m, HandlerSite m ~ site) => a -> m () #

Instances

Instances details

ToWidgetHead site Html
Instance details Defined in Yesod.Core.Widget Methods toWidgetHead :: (MonadWidget m, HandlerSite m ~ site) => Html -> m () #
ToWidgetHead site Javascript
Instance details Defined in Yesod.Core.Widget Methods toWidgetHead :: (MonadWidget m, HandlerSite m ~ site) => Javascript -> m () #
ToWidgetHead site CssBuilder
Instance details Defined in Yesod.Core.Widget Methods toWidgetHead :: (MonadWidget m, HandlerSite m ~ site) => CssBuilder -> m () #
ToWidgetHead site Css
Instance details Defined in Yesod.Core.Widget Methods toWidgetHead :: (MonadWidget m, HandlerSite m ~ site) => Css -> m () #
render ~ RY site => ToWidgetHead site (render -> Html)
Instance details Defined in Yesod.Core.Widget Methods toWidgetHead :: (MonadWidget m, HandlerSite m ~ site) => (render -> Html) -> m () #
render ~ RY site => ToWidgetHead site (render -> Css)
Instance details Defined in Yesod.Core.Widget Methods toWidgetHead :: (MonadWidget m, HandlerSite m ~ site) => (render -> Css) -> m () #
render ~ RY site => ToWidgetHead site (render -> CssBuilder)
Instance details Defined in Yesod.Core.Widget Methods toWidgetHead :: (MonadWidget m, HandlerSite m ~ site) => (render -> CssBuilder) -> m () #
render ~ RY site => ToWidgetHead site (render -> Javascript)
Instance details Defined in Yesod.Core.Widget Methods toWidgetHead :: (MonadWidget m, HandlerSite m ~ site) => (render -> Javascript) -> m () #

class ToWidgetBody site a where #

Methods

toWidgetBody :: (MonadWidget m, HandlerSite m ~ site) => a -> m () #

Instances

Instances details

ToWidgetBody site Html
Instance details Defined in Yesod.Core.Widget Methods toWidgetBody :: (MonadWidget m, HandlerSite m ~ site) => Html -> m () #
ToWidgetBody site Javascript
Instance details Defined in Yesod.Core.Widget Methods toWidgetBody :: (MonadWidget m, HandlerSite m ~ site) => Javascript -> m () #
render ~ RY site => ToWidgetBody site (render -> Html)
Instance details Defined in Yesod.Core.Widget Methods toWidgetBody :: (MonadWidget m, HandlerSite m ~ site) => (render -> Html) -> m () #
render ~ RY site => ToWidgetBody site (render -> Javascript)
Instance details Defined in Yesod.Core.Widget Methods toWidgetBody :: (MonadWidget m, HandlerSite m ~ site) => (render -> Javascript) -> m () #

class ToWidgetMedia site a where #

Allows adding some CSS to the page with a specific media type.

Since 1.2

Methods

toWidgetMedia #

Arguments

:: (MonadWidget m, HandlerSite m ~ site)
=> Text	media value
-> a
-> m ()

Add the given content to the page, but only for the given media type.

Since 1.2

Instances

Instances details

ToWidgetMedia site CssBuilder
Instance details Defined in Yesod.Core.Widget Methods toWidgetMedia :: (MonadWidget m, HandlerSite m ~ site) => Text -> CssBuilder -> m () #
ToWidgetMedia site Css
Instance details Defined in Yesod.Core.Widget Methods toWidgetMedia :: (MonadWidget m, HandlerSite m ~ site) => Text -> Css -> m () #
render ~ RY site => ToWidgetMedia site (render -> Css)
Instance details Defined in Yesod.Core.Widget Methods toWidgetMedia :: (MonadWidget m, HandlerSite m ~ site) => Text -> (render -> Css) -> m () #
render ~ RY site => ToWidgetMedia site (render -> CssBuilder)
Instance details Defined in Yesod.Core.Widget Methods toWidgetMedia :: (MonadWidget m, HandlerSite m ~ site) => Text -> (render -> CssBuilder) -> m () #

class ToWidget site a where #

Methods

toWidget :: (MonadWidget m, HandlerSite m ~ site) => a -> m () #

Instances

Instances details

ToWidget site Html
Instance details Defined in Yesod.Core.Widget Methods toWidget :: (MonadWidget m, HandlerSite m ~ site) => Html -> m () #
ToWidget site Text	Since: yesod-core-1.4.28
Instance details Defined in Yesod.Core.Widget Methods toWidget :: (MonadWidget m, HandlerSite m ~ site) => Text -> m () #
ToWidget site Text	Since: yesod-core-1.4.28
Instance details Defined in Yesod.Core.Widget Methods toWidget :: (MonadWidget m, HandlerSite m ~ site) => Text -> m () #
ToWidget site Javascript
Instance details Defined in Yesod.Core.Widget Methods toWidget :: (MonadWidget m, HandlerSite m ~ site) => Javascript -> m () #
ToWidget site CssBuilder
Instance details Defined in Yesod.Core.Widget Methods toWidget :: (MonadWidget m, HandlerSite m ~ site) => CssBuilder -> m () #
ToWidget site Css
Instance details Defined in Yesod.Core.Widget Methods toWidget :: (MonadWidget m, HandlerSite m ~ site) => Css -> m () #
ToWidget site Builder	Since: yesod-core-1.4.28
Instance details Defined in Yesod.Core.Widget Methods toWidget :: (MonadWidget m, HandlerSite m ~ site) => Builder -> m () #
(site' ~ site, a ~ ()) => ToWidget site' (WidgetFor site a)
Instance details Defined in Yesod.Core.Widget Methods toWidget :: (MonadWidget m, HandlerSite m ~ site') => WidgetFor site a -> m () #
render ~ RY site => ToWidget site (render -> Html)
Instance details Defined in Yesod.Core.Widget Methods toWidget :: (MonadWidget m, HandlerSite m ~ site) => (render -> Html) -> m () #
render ~ RY site => ToWidget site (render -> Css)
Instance details Defined in Yesod.Core.Widget Methods toWidget :: (MonadWidget m, HandlerSite m ~ site) => (render -> Css) -> m () #
render ~ RY site => ToWidget site (render -> CssBuilder)
Instance details Defined in Yesod.Core.Widget Methods toWidget :: (MonadWidget m, HandlerSite m ~ site) => (render -> CssBuilder) -> m () #
render ~ RY site => ToWidget site (render -> Javascript)
Instance details Defined in Yesod.Core.Widget Methods toWidget :: (MonadWidget m, HandlerSite m ~ site) => (render -> Javascript) -> m () #

type WidgetT site (m :: Type -> Type) = WidgetFor site #

setTitle :: MonadWidget m => Html -> m () #

Set the page title.

Calling setTitle or setTitleI multiple times overrides previously set values.

SEO Notes:

Title tags are the second most important on-page factor for SEO, after content
Every page should have a unique title tag
Start your title tag with your main targeted keyword
Don't stuff your keywords
Google typically shows 55-64 characters, so aim to keep your title length under 60 characters

setTitleI :: (MonadWidget m, RenderMessage (HandlerSite m) msg) => msg -> m () #

Set the localised page title.

n.b. See comments for setTitle

setDescription :: MonadWidget m => Text -> m () #

Add description meta tag to the head of the page

Google does not use the description tag as a ranking signal, but the contents of this tag will likely affect your click-through rate since it shows up in search results.

The average length of the description shown in Google's search results is about 160 characters on desktop, and about 130 characters on mobile, at time of writing.

Source: https://www.advancedwebranking.com/blog/meta-tags-important-in-seo/

Since: yesod-core-1.6.18

setDescriptionI :: (MonadWidget m, RenderMessage (HandlerSite m) msg) => msg -> m () #

Add translated description meta tag to the head of the page

n.b. See comments for setDescription.

Since: yesod-core-1.6.18

setOGType :: MonadWidget m => Text -> m () #

Add OpenGraph type meta tag to the head of the page

See all available OG types here: https://ogp.me/#types

Since: yesod-core-1.6.18

setOGImage :: MonadWidget m => Text -> m () #

Add OpenGraph image meta tag to the head of the page

Best practices:

Use custom images for shareable pages, e.g., homepage, articles, etc.
Use your logo or any other branded image for the rest of your pages.
Use images with a 1.91:1 ratio and minimum recommended dimensions of 1200x630 for optimal clarity across all devices.

Source: https://ahrefs.com/blog/open-graph-meta-tags/

Since: yesod-core-1.6.18

addStylesheet :: MonadWidget m => Route (HandlerSite m) -> m () #

Link to the specified local stylesheet.

addStylesheetAttrs :: MonadWidget m => Route (HandlerSite m) -> [(Text, Text)] -> m () #

Link to the specified local stylesheet.

addStylesheetRemote :: MonadWidget m => Text -> m () #

Link to the specified remote stylesheet.

addStylesheetRemoteAttrs :: MonadWidget m => Text -> [(Text, Text)] -> m () #

Link to the specified remote stylesheet.

addStylesheetEither :: MonadWidget m => Either (Route (HandlerSite m)) Text -> m () #

addScriptEither :: MonadWidget m => Either (Route (HandlerSite m)) Text -> m () #

addScript :: MonadWidget m => Route (HandlerSite m) -> m () #

Link to the specified local script.

addScriptAttrs :: MonadWidget m => Route (HandlerSite m) -> [(Text, Text)] -> m () #

Link to the specified local script.

addScriptRemote :: MonadWidget m => Text -> m () #

Link to the specified remote script.

addScriptRemoteAttrs :: MonadWidget m => Text -> [(Text, Text)] -> m () #

Link to the specified remote script.

whamlet :: QuasiQuoter #

whamletFile :: FilePath -> Q Exp #

whamletFileWithSettings :: HamletSettings -> FilePath -> Q Exp #

asWidgetT :: forall site (m :: Type -> Type). WidgetT site m () -> WidgetT site m () #

ihamletToRepHtml :: (MonadHandler m, RenderMessage (HandlerSite m) message) => HtmlUrlI18n message (Route (HandlerSite m)) -> m Html #

Wraps the Content generated by hamletToContent in a RepHtml.

ihamletToHtml :: (MonadHandler m, RenderMessage (HandlerSite m) message) => HtmlUrlI18n message (Route (HandlerSite m)) -> m Html #

Wraps the Content generated by hamletToContent in a RepHtml.

Since 1.2.1

handlerToWidget :: HandlerFor site a -> WidgetFor site a #

class RenderRoute site => Yesod site where #

Define settings for a Yesod applications. All methods have intelligent defaults, and therefore no implementation is required.

Minimal complete definition

Nothing

Methods

approot :: Approot site #

An absolute URL to the root of the application. Do not include trailing slash.

Default value: guessApproot. If you know your application root statically, it will be more efficient and more reliable to instead use ApprootStatic or ApprootMaster. If you do not need full absolute URLs, you can use ApprootRelative instead.

Note: Prior to yesod-core 1.5, the default value was ApprootRelative.

errorHandler :: ErrorResponse -> HandlerFor site TypedContent #

Output error response pages.

Default value: defaultErrorHandler.

defaultLayout :: WidgetFor site () -> HandlerFor site Html #

Applies some form of layout to the contents of a page.

urlParamRenderOverride #

Arguments

:: site
-> Route site
-> [(Text, Text)]	query string
-> Maybe Builder

Override the rendering function for a particular URL and query string parameters. One use case for this is to offload static hosting to a different domain name to avoid sending cookies.

For backward compatibility default implementation is in terms of urlRenderOverride, probably ineffective

Since 1.4.23

isAuthorized #

Arguments

:: Route site
-> Bool	is this a write request?
-> HandlerFor site AuthResult

Determine if a request is authorized or not.

Return Authorized if the request is authorized, Unauthorized a message if unauthorized. If authentication is required, return AuthenticationRequired.

isWriteRequest :: Route site -> HandlerFor site Bool #

Determines whether the current request is a write request. By default, this assumes you are following RESTful principles, and determines this from request method. In particular, all except the following request methods are considered write: GET HEAD OPTIONS TRACE.

This function is used to determine if a request is authorized; see isAuthorized.

authRoute :: site -> Maybe (Route site) #

The default route for authentication.

Used in particular by isAuthorized, but library users can do whatever they want with it.

cleanPath :: site -> [Text] -> Either [Text] [Text] #

A function used to clean up path segments. It returns Right with a clean path or Left with a new set of pieces the user should be redirected to. The default implementation enforces:

No double slashes
There is no trailing slash.

Note that versions of Yesod prior to 0.7 used a different set of rules involing trailing slashes.

joinPath #

Arguments

:: site
-> Text	application root
-> [Text]	path pieces
-> [(Text, Text)]	query string
-> Builder

Builds an absolute URL by concatenating the application root with the pieces of a path and a query string, if any. Note that the pieces of the path have been previously cleaned up by cleanPath.

addStaticContent #

Arguments

:: Text	filename extension
-> Text	mime-type
-> ByteString	content
-> HandlerFor site (Maybe (Either Text (Route site, [(Text, Text)])))

This function is used to store some static content to be served as an external file. The most common case of this is stashing CSS and JavaScript content in an external file; the Yesod.Widget module uses this feature.

The return value is Nothing if no storing was performed; this is the default implementation. A Just Left gives the absolute URL of the file, whereas a Just Right gives the type-safe URL. The former is necessary when you are serving the content outside the context of a Yesod application, such as via memcached.

maximumContentLength :: site -> Maybe (Route site) -> Maybe Word64 #

Maximum allowed length of the request body, in bytes. This method may be ignored if maximumContentLengthIO is overridden.

If Nothing, no maximum is applied.

Default: 2 megabytes.

maximumContentLengthIO :: site -> Maybe (Route site) -> IO (Maybe Word64) #

Maximum allowed length of the request body, in bytes. This is similar to maximumContentLength, but the result lives in IO. This allows you to dynamically change the maximum file size based on some external source like a database or an IORef.

The default implementation uses maximumContentLength. Future version of yesod will remove maximumContentLength and use this method exclusively.

Since: yesod-core-1.6.13

makeLogger :: site -> IO Logger #

Creates a Logger to use for log messages.

Note that a common technique (endorsed by the scaffolding) is to create a Logger value and place it in your foundation datatype, and have this method return that already created value. That way, you can use that same Logger for printing messages during app initialization.

Default: the defaultMakeLogger function.

messageLoggerSource #

Arguments

:: site
-> Logger
-> Loc	position in source code
-> LogSource
-> LogLevel
-> LogStr	message
-> IO ()

Send a message to the Logger provided by getLogger.

Default: the defaultMessageLoggerSource function, using shouldLogIO to check whether we should log.

jsLoader :: site -> ScriptLoadPosition site #

Where to Load sripts from. We recommend the default value, BottomOfBody.

jsAttributes :: site -> [(Text, Text)] #

Default attributes to put on the JavaScript script tag generated for julius files

jsAttributesHandler :: HandlerFor site [(Text, Text)] #

Same as jsAttributes but allows you to run arbitrary Handler code

This is useful if you need to add a randomised nonce value to the script tag generated by widgetFile. If this function is overridden then jsAttributes is ignored.

Since: yesod-core-1.6.16

makeSessionBackend :: site -> IO (Maybe SessionBackend) #

Create a session backend. Returning Nothing disables sessions. If you'd like to change the way that the session cookies are created, take a look at customizeSessionCookies.

Default: Uses clientsession with a 2 hour timeout.

fileUpload :: site -> RequestBodyLength -> FileUpload #

How to store uploaded files.

Default: When the request body is greater than 50kb, store in a temp file. For chunked request bodies, store in a temp file. Otherwise, store in memory.

shouldLogIO :: site -> LogSource -> LogLevel -> IO Bool #

Should we log the given log source/level combination.

Default: the defaultShouldLogIO function.

Since 1.2.4

yesodMiddleware :: ToTypedContent res => HandlerFor site res -> HandlerFor site res #

A Yesod middleware, which will wrap every handler function. This allows you to run code before and after a normal handler.

Default: the defaultYesodMiddleware function.

Since: 1.1.6

yesodWithInternalState :: site -> Maybe (Route site) -> (InternalState -> IO a) -> IO a #

How to allocate an InternalState for each request.

The default implementation is almost always what you want. However, if you know that you are never taking advantage of the MonadResource instance in your handler functions, setting this to a dummy implementation can provide a small optimization. Only do this if you really know what you're doing, otherwise you can turn safe code into a runtime error!

Since 1.4.2

defaultMessageWidget :: Html -> HtmlUrl (Route site) -> WidgetFor site () #

Convert a title and HTML snippet into a Widget. Used primarily for wrapping up error messages for better display.

Since: yesod-core-1.4.30

Instances

Instances details

Yesod LiteApp
Instance details Defined in Yesod.Core.Internal.LiteApp Methods approot :: Approot LiteApp # errorHandler :: ErrorResponse -> HandlerFor LiteApp TypedContent # defaultLayout :: WidgetFor LiteApp () -> HandlerFor LiteApp Html # urlParamRenderOverride :: LiteApp -> Route LiteApp -> [(Text, Text)] -> Maybe Builder # isAuthorized :: Route LiteApp -> Bool -> HandlerFor LiteApp AuthResult # isWriteRequest :: Route LiteApp -> HandlerFor LiteApp Bool # authRoute :: LiteApp -> Maybe (Route LiteApp) # cleanPath :: LiteApp -> [Text] -> Either [Text] [Text] # joinPath :: LiteApp -> Text -> [Text] -> [(Text, Text)] -> Builder # addStaticContent :: Text -> Text -> ByteString -> HandlerFor LiteApp (Maybe (Either Text (Route LiteApp, [(Text, Text)]))) # maximumContentLength :: LiteApp -> Maybe (Route LiteApp) -> Maybe Word64 # maximumContentLengthIO :: LiteApp -> Maybe (Route LiteApp) -> IO (Maybe Word64) # makeLogger :: LiteApp -> IO Logger # messageLoggerSource :: LiteApp -> Logger -> Loc -> LogSource -> LogLevel -> LogStr -> IO () # jsLoader :: LiteApp -> ScriptLoadPosition LiteApp # jsAttributes :: LiteApp -> [(Text, Text)] # jsAttributesHandler :: HandlerFor LiteApp [(Text, Text)] # makeSessionBackend :: LiteApp -> IO (Maybe SessionBackend) # fileUpload :: LiteApp -> RequestBodyLength -> FileUpload # shouldLogIO :: LiteApp -> LogSource -> LogLevel -> IO Bool # yesodMiddleware :: ToTypedContent res => HandlerFor LiteApp res -> HandlerFor LiteApp res # yesodWithInternalState :: LiteApp -> Maybe (Route LiteApp) -> (InternalState -> IO a) -> IO a # defaultMessageWidget :: Html -> HtmlUrl (Route LiteApp) -> WidgetFor LiteApp () #
Yesod App Source #
Instance details Defined in Hledger.Web.Foundation Methods approot :: Approot App # errorHandler :: ErrorResponse -> HandlerFor App TypedContent # defaultLayout :: WidgetFor App () -> HandlerFor App Html # urlParamRenderOverride :: App -> Route App -> [(Text, Text)] -> Maybe Builder # isAuthorized :: Route App -> Bool -> HandlerFor App AuthResult # isWriteRequest :: Route App -> HandlerFor App Bool # authRoute :: App -> Maybe (Route App) # cleanPath :: App -> [Text] -> Either [Text] [Text] # joinPath :: App -> Text -> [Text] -> [(Text, Text)] -> Builder # addStaticContent :: Text -> Text -> ByteString -> HandlerFor App (Maybe (Either Text (Route App, [(Text, Text)]))) # maximumContentLength :: App -> Maybe (Route App) -> Maybe Word64 # maximumContentLengthIO :: App -> Maybe (Route App) -> IO (Maybe Word64) # makeLogger :: App -> IO Logger # messageLoggerSource :: App -> Logger -> Loc -> LogSource -> LogLevel -> LogStr -> IO () # jsLoader :: App -> ScriptLoadPosition App # jsAttributes :: App -> [(Text, Text)] # jsAttributesHandler :: HandlerFor App [(Text, Text)] # makeSessionBackend :: App -> IO (Maybe SessionBackend) # fileUpload :: App -> RequestBodyLength -> FileUpload # shouldLogIO :: App -> LogSource -> LogLevel -> IO Bool # yesodMiddleware :: ToTypedContent res => HandlerFor App res -> HandlerFor App res # yesodWithInternalState :: App -> Maybe (Route App) -> (InternalState -> IO a) -> IO a # defaultMessageWidget :: Html -> HtmlUrl (Route App) -> WidgetFor App () #

defaultMakeLogger :: IO Logger #

Default implementation of makeLogger. Sends to stdout and automatically flushes on each write.

Since 1.4.10

defaultMessageLoggerSource #

Arguments

:: (LogSource -> LogLevel -> IO Bool)	Check whether we should log this
-> Logger
-> Loc	position in source code
-> LogSource
-> LogLevel
-> LogStr	message
-> IO ()

Default implementation of messageLoggerSource. Checks if the message should be logged using the provided function, and if so, formats using formatLogMessage. You can use defaultShouldLogIO as the provided function.

Since 1.4.10

defaultShouldLogIO :: LogSource -> LogLevel -> IO Bool #

Default implementation of shouldLog. Logs everything at or above LevelInfo.

Since 1.4.10

defaultYesodMiddleware :: Yesod site => HandlerFor site res -> HandlerFor site res #

Default implementation of yesodMiddleware. Adds the response header "Vary: Accept, Accept-Language", "X-XSS-Protection: 1; mode=block", and performs authorization checks.

Since 1.2.0

sslOnlySessions :: IO (Maybe SessionBackend) -> IO (Maybe SessionBackend) #

Defends against session hijacking by setting the secure bit on session cookies so that browsers will not transmit them over http. With this setting on, it follows that the server will regard requests made over http as sessionless, because the session cookie will not be included in the request. Use this as part of a total security measure which also includes disabling HTTP traffic to the site or issuing redirects from HTTP urls, and composing sslOnlyMiddleware with the site's yesodMiddleware.

Since 1.4.7

laxSameSiteSessions :: IO (Maybe SessionBackend) -> IO (Maybe SessionBackend) #

Helps defend against CSRF attacks by setting the SameSite attribute on session cookies to Lax. With the Lax setting, the cookie will be sent with same-site requests, and with cross-site top-level navigations.

This option is liable to change in future versions of Yesod as the spec evolves. View more information here.

Since: yesod-core-1.4.23

strictSameSiteSessions :: IO (Maybe SessionBackend) -> IO (Maybe SessionBackend) #

Helps defend against CSRF attacks by setting the SameSite attribute on session cookies to Strict. With the Strict setting, the cookie will only be sent with same-site requests.

This option is liable to change in future versions of Yesod as the spec evolves. View more information here.

Since: yesod-core-1.4.23

sslOnlyMiddleware #

Arguments

:: Int	minutes
-> HandlerFor site res
-> HandlerFor site res

Apply a Strict-Transport-Security header with the specified timeout to all responses so that browsers will rewrite all http links to https until the timeout expires. For security, the max-age of the STS header should always equal or exceed the client sessions timeout. This defends against SSL-stripping man-in-the-middle attacks. It is only effective if a secure connection has already been made; Strict-Transport-Security headers are ignored over HTTP.

Since 1.4.7

authorizationCheck :: Yesod site => HandlerFor site () #

Check if a given request is authorized via isAuthorized and isWriteRequest.

Since 1.2.0

defaultCsrfCheckMiddleware :: Yesod site => HandlerFor site res -> HandlerFor site res #

Calls csrfCheckMiddleware with isWriteRequest, defaultCsrfHeaderName, and defaultCsrfParamName as parameters.

Since 1.4.14

csrfCheckMiddleware #

Arguments

:: HandlerFor site res
-> HandlerFor site Bool	Whether or not to perform the CSRF check.
-> CI ByteString	The header name to lookup the CSRF token from.
-> Text	The POST parameter name to lookup the CSRF token from.
-> HandlerFor site res

Looks up the CSRF token from the request headers or POST parameters. If the value doesn't match the token stored in the session, this function throws a PermissionDenied error.

For details, see the "AJAX CSRF protection" section of Yesod.Core.Handler.

Since 1.4.14

defaultCsrfSetCookieMiddleware :: HandlerFor site res -> HandlerFor site res #

Calls csrfSetCookieMiddleware with the defaultCsrfCookieName.

The cookie's path is set to /, making it valid for your whole website.

Since 1.4.14

csrfSetCookieMiddleware :: HandlerFor site res -> SetCookie -> HandlerFor site res #

Takes a SetCookie and overrides its value with a CSRF token, then sets the cookie. See setCsrfCookieWithCookie.

For details, see the "AJAX CSRF protection" section of Yesod.Core.Handler.

Make sure to set the setCookiePath to the root path of your application, otherwise you'll generate a new CSRF token for every path of your app. If your app is run from from e.g. www.example.com/app1, use app1. The vast majority of sites will just use /.

Since 1.4.14

defaultCsrfMiddleware :: Yesod site => HandlerFor site res -> HandlerFor site res #

Calls defaultCsrfSetCookieMiddleware and defaultCsrfCheckMiddleware.

For details, see the "AJAX CSRF protection" section of Yesod.Core.Handler.

You can chain this middleware together with other middleware like so:

yesodMiddleware = defaultYesodMiddleware . defaultCsrfMiddleware

or:

yesodMiddleware app = defaultYesodMiddleware $ defaultCsrfMiddleware $ app

Since 1.4.14

widgetToPageContent :: Yesod site => WidgetFor site () -> HandlerFor site (PageContent (Route site)) #

Convert a widget to a PageContent.

defaultErrorHandler :: Yesod site => ErrorResponse -> HandlerFor site TypedContent #

The default error handler for errorHandler.

formatLogMessage #

Arguments

:: IO ZonedDate
-> Loc
-> LogSource
-> LogLevel
-> LogStr	message
-> IO LogStr

Default formatting for log messages. When you use the template haskell logging functions for to log with information about the source location, that information will be appended to the end of the log. When you use the non-TH logging functions, like logDebugN, this function does not include source information. This currently works by checking to see if the package name is the string "<unknown>". This is a hack, but it removes some of the visual clutter from non-TH logs.

Since 1.4.10

customizeSessionCookies :: (SetCookie -> SetCookie) -> SessionBackend -> SessionBackend #

Customize the cookies used by the session backend. You may use this function on your definition of makeSessionBackend.

For example, you could set the cookie domain so that it would work across many subdomains:

makeSessionBackend site =
    (fmap . fmap) (customizeSessionCookies addDomain) ...
  where
    addDomain cookie = cookie { setCookieDomain = Just ".example.com" }

Default: Do not customize anything (id).

defaultClientSessionBackend #

Arguments

:: Int	minutes
-> FilePath	key file
-> IO SessionBackend

envClientSessionBackend #

Arguments

:: Int	minutes
-> String	environment variable name
-> IO SessionBackend

Create a SessionBackend which reads the session key from the named environment variable.

This can be useful if:

You can't rely on a persistent file system (e.g. Heroku)
Your application is open source (e.g. you can't commit the key)

By keeping a consistent value in the environment variable, your users will have consistent sessions without relying on the file system.

Note: A suitable value should only be obtained in one of two ways:

Run this code without the variable set, a value will be generated and printed on devstdout/
Use clientsession-generate

Since 1.4.5

clientSessionBackend #

Arguments

:: Key	The encryption key
-> IO ClientSessionDateCache	See `clientSessionDateCacher`
-> SessionBackend

loadClientSession #

Arguments

:: Key
-> IO ClientSessionDateCache	See `clientSessionDateCacher`
-> ByteString	session name
-> Request
-> IO (SessionMap, SaveSession)

guessApproot :: Approot site #

Guess the approot based on request headers. For more information, see Network.Wai.Middleware.Approot

In the case of headers being unavailable, it falls back to ApprootRelative

Since 1.4.16

guessApprootOr :: Approot site -> Approot site #

Guess the approot based on request headers, with fall back to the specified AppRoot.

Since 1.4.16

getApprootText :: Approot site -> site -> Request -> Text #

Get the textual application root from an Approot value.

Since 1.4.17

defaultLayoutJson #

Arguments

:: (Yesod site, ToJSON a)
=> WidgetFor site ()	HTML
-> HandlerFor site a	JSON
-> HandlerFor site TypedContent

Provide both an HTML and JSON representation for a piece of data, using the default layout for the HTML output (defaultLayout).

Since: yesod-core-0.3.0

jsonToRepJson :: (Monad m, ToJSON a) => a -> m Value #

Wraps a data type in a RepJson. The data type must support conversion to JSON via ToJSON.

Since: yesod-core-0.3.0

returnJson :: (Monad m, ToJSON a) => a -> m Value #

Convert a value to a JSON representation via aeson's toJSON function.

Since: yesod-core-1.2.1

returnJsonEncoding :: (Monad m, ToJSON a) => a -> m Encoding #

Convert a value to a JSON representation via aeson's toEncoding function.

Since: yesod-core-1.4.21

provideJson :: forall (m :: Type -> Type) a. (Monad m, ToJSON a) => a -> Writer (Endo [ProvidedRep m]) () #

Provide a JSON representation for usage with selectReps, using aeson's toJSON (aeson >= 0.11: toEncoding) function to perform the conversion.

Since: yesod-core-1.2.1

parseJsonBody :: (MonadHandler m, FromJSON a) => m (Result a) #

Same as parseInsecureJsonBody

Since: yesod-core-0.3.0

parseInsecureJsonBody :: (MonadHandler m, FromJSON a) => m (Result a) #

Same as parseCheckJsonBody, but does not check that the mime type indicates JSON content.

Note: This function is vulnerable to CSRF attacks.

Since: yesod-core-1.6.11

parseCheckJsonBody :: (MonadHandler m, FromJSON a) => m (Result a) #

Parse the request body to a data type as a JSON value. The data type must support conversion from JSON via FromJSON. If you want the raw JSON value, just ask for a Result Value.

The MIME type must indicate JSON content. Requiring a JSON content-type helps secure your site against CSRF attacks (browsers will perform POST requests for form and text/plain content-types without doing a CORS check, and those content-types can easily contain valid JSON).

Note that this function will consume the request body. As such, calling it twice will result in a parse error on the second call, since the request body will no longer be available.

Since: yesod-core-0.3.0

parseJsonBody_ :: (MonadHandler m, FromJSON a) => m a #

Same as parseInsecureJsonBody, but return an invalid args response on a parse error.

requireJsonBody :: (MonadHandler m, FromJSON a) => m a #

Same as parseInsecureJsonBody, but return an invalid args response on a parse error.

requireInsecureJsonBody :: (MonadHandler m, FromJSON a) => m a #

Same as parseInsecureJsonBody, but return an invalid args response on a parse error.

Since: yesod-core-1.6.11

requireCheckJsonBody :: (MonadHandler m, FromJSON a) => m a #

Same as parseCheckJsonBody, but return an invalid args response on a parse error.

array :: ToJSON a => [a] -> Value #

Convert a list of values to an Array.

jsonOrRedirect #

Arguments

:: (MonadHandler m, ToJSON a)
=> Route (HandlerSite m)	Redirect target
-> a	Data to send via JSON
-> m Value

jsonOrRedirect simplifies the scenario where a POST handler sends a different response based on Accept headers:

200 with JSON data if the client prefers application/json (e.g. AJAX, see acceptsJSON).
3xx otherwise, following the PRG pattern.

jsonEncodingOrRedirect #

Arguments

:: (MonadHandler m, ToJSON a)
=> Route (HandlerSite m)	Redirect target
-> a	Data to send via JSON
-> m Encoding

jsonEncodingOrRedirect simplifies the scenario where a POST handler sends a different response based on Accept headers:

200 with JSON data if the client prefers application/json (e.g. AJAX, see acceptsJSON).
3xx otherwise, following the PRG pattern. @since 1.4.21

acceptsJson :: MonadHandler m => m Bool #

Returns True if the client prefers application/json as indicated by the Accept HTTP header.

contentTypeHeaderIsJson :: ByteString -> Bool #

Given the Content-Type header, returns if it is JSON.

This function is currently a simple check for application/json, but in the future may check for alternative representations such as xxx/yyy+json.

Since: yesod-core-1.6.17

yesodRunner :: (ToTypedContent res, Yesod site) => HandlerFor site res -> YesodRunnerEnv site -> Maybe (Route site) -> Application #

yesodRender #

Arguments

:: Yesod y
=> y
-> ResolvedApproot
-> Route y
-> [(Text, Text)]	url query string
-> Text

class YesodSubDispatch sub master where #

Methods

yesodSubDispatch :: YesodSubRunnerEnv sub master -> Application #

Instances

Instances details

YesodSubDispatch WaiSubsiteWithAuth master
Instance details Defined in Yesod.Core.Class.Dispatch Methods yesodSubDispatch :: YesodSubRunnerEnv WaiSubsiteWithAuth master -> Application #
YesodSubDispatch WaiSubsite master
Instance details Defined in Yesod.Core.Class.Dispatch Methods yesodSubDispatch :: YesodSubRunnerEnv WaiSubsite master -> Application #
YesodSubDispatch Static master
Instance details Defined in Yesod.Static Methods yesodSubDispatch :: YesodSubRunnerEnv Static master -> Application #

class Yesod site => YesodDispatch site where #

This class is automatically instantiated when you use the template haskell mkYesod function. You should never need to deal with it directly.

Methods

yesodDispatch :: YesodRunnerEnv site -> Application #

Instances

Instances details

YesodDispatch LiteApp
Instance details Defined in Yesod.Core.Internal.LiteApp Methods yesodDispatch :: YesodRunnerEnv LiteApp -> Application #
YesodDispatch App Source #
Instance details Defined in Hledger.Web.Application Methods yesodDispatch :: YesodRunnerEnv App -> Application #

type LiteWidget = WidgetFor LiteApp #

type LiteHandler = HandlerFor LiteApp #

newtype LiteApp #

Constructors

LiteApp
Fields unLiteApp :: Method -> [Text] -> Maybe (LiteHandler TypedContent)

Instances

Instances details

Semigroup LiteApp
Instance details Defined in Yesod.Core.Internal.LiteApp Methods (<>) :: LiteApp -> LiteApp -> LiteApp # sconcat :: NonEmpty LiteApp -> LiteApp # stimes :: Integral b => b -> LiteApp -> LiteApp #
Monoid LiteApp
Instance details Defined in Yesod.Core.Internal.LiteApp Methods mempty :: LiteApp # mappend :: LiteApp -> LiteApp -> LiteApp # mconcat :: [LiteApp] -> LiteApp #
ParseRoute LiteApp
Instance details Defined in Yesod.Core.Internal.LiteApp Methods parseRoute :: ([Text], [(Text, Text)]) -> Maybe (Route LiteApp) #
RenderRoute LiteApp
Instance details Defined in Yesod.Core.Internal.LiteApp Associated Types data Route LiteApp # Methods renderRoute :: Route LiteApp -> ([Text], [(Text, Text)]) #
Yesod LiteApp
Instance details Defined in Yesod.Core.Internal.LiteApp Methods approot :: Approot LiteApp # errorHandler :: ErrorResponse -> HandlerFor LiteApp TypedContent # defaultLayout :: WidgetFor LiteApp () -> HandlerFor LiteApp Html # urlParamRenderOverride :: LiteApp -> Route LiteApp -> [(Text, Text)] -> Maybe Builder # isAuthorized :: Route LiteApp -> Bool -> HandlerFor LiteApp AuthResult # isWriteRequest :: Route LiteApp -> HandlerFor LiteApp Bool # authRoute :: LiteApp -> Maybe (Route LiteApp) # cleanPath :: LiteApp -> [Text] -> Either [Text] [Text] # joinPath :: LiteApp -> Text -> [Text] -> [(Text, Text)] -> Builder # addStaticContent :: Text -> Text -> ByteString -> HandlerFor LiteApp (Maybe (Either Text (Route LiteApp, [(Text, Text)]))) # maximumContentLength :: LiteApp -> Maybe (Route LiteApp) -> Maybe Word64 # maximumContentLengthIO :: LiteApp -> Maybe (Route LiteApp) -> IO (Maybe Word64) # makeLogger :: LiteApp -> IO Logger # messageLoggerSource :: LiteApp -> Logger -> Loc -> LogSource -> LogLevel -> LogStr -> IO () # jsLoader :: LiteApp -> ScriptLoadPosition LiteApp # jsAttributes :: LiteApp -> [(Text, Text)] # jsAttributesHandler :: HandlerFor LiteApp [(Text, Text)] # makeSessionBackend :: LiteApp -> IO (Maybe SessionBackend) # fileUpload :: LiteApp -> RequestBodyLength -> FileUpload # shouldLogIO :: LiteApp -> LogSource -> LogLevel -> IO Bool # yesodMiddleware :: ToTypedContent res => HandlerFor LiteApp res -> HandlerFor LiteApp res # yesodWithInternalState :: LiteApp -> Maybe (Route LiteApp) -> (InternalState -> IO a) -> IO a # defaultMessageWidget :: Html -> HtmlUrl (Route LiteApp) -> WidgetFor LiteApp () #
YesodDispatch LiteApp
Instance details Defined in Yesod.Core.Internal.LiteApp Methods yesodDispatch :: YesodRunnerEnv LiteApp -> Application #
Eq (Route LiteApp)
Instance details Defined in Yesod.Core.Internal.LiteApp Methods (==) :: Route LiteApp -> Route LiteApp -> Bool # (/=) :: Route LiteApp -> Route LiteApp -> Bool #
Ord (Route LiteApp)
Instance details Defined in Yesod.Core.Internal.LiteApp Methods compare :: Route LiteApp -> Route LiteApp -> Ordering # (<) :: Route LiteApp -> Route LiteApp -> Bool # (<=) :: Route LiteApp -> Route LiteApp -> Bool # (>) :: Route LiteApp -> Route LiteApp -> Bool # (>=) :: Route LiteApp -> Route LiteApp -> Bool # max :: Route LiteApp -> Route LiteApp -> Route LiteApp # min :: Route LiteApp -> Route LiteApp -> Route LiteApp #
Read (Route LiteApp)
Instance details Defined in Yesod.Core.Internal.LiteApp Methods readsPrec :: Int -> ReadS (Route LiteApp) # readList :: ReadS [Route LiteApp] # readPrec :: ReadPrec (Route LiteApp) # readListPrec :: ReadPrec [Route LiteApp] #
Show (Route LiteApp)
Instance details Defined in Yesod.Core.Internal.LiteApp Methods showsPrec :: Int -> Route LiteApp -> ShowS # show :: Route LiteApp -> String # showList :: [Route LiteApp] -> ShowS #
data Route LiteApp
Instance details Defined in Yesod.Core.Internal.LiteApp data Route LiteApp = LiteAppRoute [Text]

liteApp :: Writer LiteApp () -> LiteApp #

dispatchTo :: ToTypedContent a => LiteHandler a -> Writer LiteApp () #

onMethod :: Method -> Writer LiteApp () -> Writer LiteApp () #

onStatic :: Text -> Writer LiteApp () -> Writer LiteApp () #

withDynamic :: PathPiece p => (p -> Writer LiteApp ()) -> Writer LiteApp () #

withDynamicMulti :: PathMultiPiece ps => (ps -> Writer LiteApp ()) -> Writer LiteApp () #

class YesodBreadcrumbs site where #

A type-safe, concise method of creating breadcrumbs for pages. For each resource, you declare the title of the page and the parent resource (if present).

Methods

breadcrumb :: Route site -> HandlerFor site (Text, Maybe (Route site)) #

Returns the title and the parent resource, if available. If you return a Nothing, then this is considered a top-level page.

breadcrumbs :: (YesodBreadcrumbs site, Show (Route site), Eq (Route site)) => HandlerFor site (Text, [(Route site, Text)]) #

Gets the title of the current page and the hierarchy of parent pages, along with their respective titles.

parseRoutes :: QuasiQuoter #

A quasi-quoter to parse a string into a list of Resources. Checks for overlapping routes, failing if present; use parseRoutesNoCheck to skip the checking. See documentation site for details on syntax.

parseRoutesFile :: FilePath -> Q Exp #

Same as parseRoutes, but uses an external file instead of quasiquotation.

The recommended file extension is .yesodroutes.

parseRoutesFileNoCheck :: FilePath -> Q Exp #

Same as parseRoutesNoCheck, but uses an external file instead of quasiquotation.

The recommended file extension is .yesodroutes.

parseRoutesNoCheck :: QuasiQuoter #

Same as parseRoutes, but performs no overlap checking.

mkYesod #

Arguments

:: String	name of the argument datatype
-> [ResourceTree String]
-> Q [Dec]

Generates URL datatype and site function for the given Resources. This is used for creating sites, not subsites. See mkYesodSubData and mkYesodSubDispatch for the latter. Use parseRoutes to create the Resources.

Contexts and type variables in the name of the datatype are parsed. For example, a datatype App a with typeclass constraint MyClass a can be written as "(MyClass a) => App a".

mkYesodWith #

Arguments

:: [[String]]	list of contexts
-> String	name of the argument datatype
-> [String]	list of type variables
-> [ResourceTree String]
-> Q [Dec]

Similar to mkYesod, except contexts and type variables are not parsed. Instead, they are explicitly provided. You can write (MyClass a) => App a with mkYesodWith [["MyClass","a"]] "App" ["a"] ....

mkYesodData :: String -> [ResourceTree String] -> Q [Dec] #

Sometimes, you will want to declare your routes in one file and define your handlers elsewhere. For example, this is the only way to break up a monolithic file into smaller parts. Use this function, paired with mkYesodDispatch, to do just that.

mkYesodSubData :: String -> [ResourceTree String] -> Q [Dec] #

mkYesodDispatch :: String -> [ResourceTree String] -> Q [Dec] #

See mkYesodData.

mkYesodSubDispatch :: [ResourceTree a] -> Q Exp #

toWaiAppPlain :: YesodDispatch site => site -> IO Application #

Convert the given argument into a WAI application, executable with any WAI handler. This function will provide no middlewares; if you want commonly used middlewares, please use toWaiApp.

defaultGen :: IO Int #

Generate a random number uniformly distributed in the full range of Int.

Note: Before 1.6.20, this generates pseudo-random number in an unspecified range. The range size may not be a power of 2. Since 1.6.20, this uses a secure entropy source and generates in the full range of Int.

Since: yesod-core-1.6.21.0

toWaiAppYre :: YesodDispatch site => YesodRunnerEnv site -> Application #

Pure low level function to construct WAI application. Usefull when you need not standard way to run your app, or want to embed it inside another app.

Since: yesod-core-1.4.29

toWaiApp :: YesodDispatch site => site -> IO Application #

Same as toWaiAppPlain, but provides a default set of middlewares. This set may change with future releases, but currently covers:

Logging
GZIP compression
Automatic HEAD method handling
Request method override with the _method query string parameter
Accept header override with the _accept query string parameter

warp :: YesodDispatch site => Int -> site -> IO () #

A convenience method to run an application using the Warp webserver on the specified port. Automatically calls toWaiApp. Provides a default set of middlewares. This set may change at any point without a breaking version number. Currently, it includes:

If you need more fine-grained control of middlewares, please use toWaiApp directly.

Since 1.2.0

mkDefaultMiddlewares :: Logger -> IO Middleware #

A default set of middlewares.

Since 1.2.0

defaultMiddlewaresNoLogging :: Middleware #

All of the default middlewares, excluding logging.

Since 1.2.12

warpDebug :: YesodDispatch site => Int -> site -> IO () #

Deprecated synonym for warp.

warpEnv :: YesodDispatch site => site -> IO () #

Runs your application using default middlewares (i.e., via toWaiApp). It reads port information from the PORT environment variable, as used by tools such as Keter and the FP Complete School of Haskell.

Note that the exact behavior of this function may be modified slightly over time to work correctly with external tools, without a change to the type signature.

getGetMaxExpires :: IO (IO Text) #

Default constructor for yreGetMaxExpires field. Low level function for simple manual construction of YesodRunnerEnv.

Since: yesod-core-1.4.29

runFakeHandler :: (Yesod site, MonadIO m) => SessionMap -> (site -> Logger) -> site -> HandlerT site IO a -> m (Either ErrorResponse a) #

unauthorizedI :: (MonadHandler m, RenderMessage (HandlerSite m) msg) => msg -> m AuthResult #

Return an Unauthorized value, with the given i18n message.

yesodVersion :: String #

maybeAuthorized #

Arguments

:: Yesod site
=> Route site
-> Bool	is this a write request?
-> HandlerT site IO (Maybe (Route site))

Return the same URL if the user is authorized to see it.

Built on top of isAuthorized. This is useful for building page that only contain links to pages the user is allowed to see.

showIntegral :: Integral a => a -> String #

readIntegral :: Num a => String -> Maybe a #

data Extra Source #

Constructors

Extra
Fields extraCopyright :: Text extraAnalytics :: Maybe Text Google Analytics extraStaticRoot :: Maybe Text

Instances

Instances details

Show Extra Source #
Instance details Defined in Hledger.Web.Settings Methods showsPrec :: Int -> Extra -> ShowS # show :: Extra -> String # showList :: [Extra] -> ShowS #

development :: Bool Source #

production :: Bool Source #

hledgerorgurl :: Text Source #

manualurl :: Text Source #

defhost :: String Source #

The default IP address to listen on. May be overridden with --host.

defport :: Int Source #

The default TCP port to listen on. May be overridden with --port.

defbaseurl :: String -> Int -> String Source #

staticDir :: FilePath Source #

The location of static files on your system. This is a file system path. The default value works properly with your scaffolded site.

staticRoot :: AppConfig DefaultEnv Extra -> Text Source #

The base URL for your static files. As you can see by the default value, this can simply be "static" appended to your application root. A powerful optimization can be serving static files from a separate domain name. This allows you to use a web server optimized for static files, more easily set expires and cache values, and avoid possibly costly transference of cookies on static files. For more information, please see: http://code.google.com/speed/page-speed/docs/request.html#ServeFromCookielessDomain

If you change the resource pattern for StaticR in Foundation.hs, you will have to make a corresponding change here.

To see how this value is used, see urlRenderOverride in Foundation.hs

widgetFileSettings :: WidgetFileSettings Source #

Settings for widgetFile, such as which template languages to support and default Hamlet settings.

widgetFile :: String -> Q Exp Source #

parseExtra :: DefaultEnv -> Object -> Parser Extra Source #

staticSite :: IO Static Source #

hledger_css :: StaticRoute Source #

hledger_js :: StaticRoute Source #

css_bootstrap_datepicker_standalone_min_css :: StaticRoute Source #

css_bootstrap_theme_css :: StaticRoute Source #

css_bootstrap_theme_css_map :: StaticRoute Source #

css_bootstrap_theme_min_css :: StaticRoute Source #

css_bootstrap_css :: StaticRoute Source #

css_bootstrap_css_map :: StaticRoute Source #

css_bootstrap_min_css :: StaticRoute Source #

fonts_glyphicons_halflings_regular_eot :: StaticRoute Source #

fonts_glyphicons_halflings_regular_svg :: StaticRoute Source #

fonts_glyphicons_halflings_regular_ttf :: StaticRoute Source #

fonts_glyphicons_halflings_regular_woff :: StaticRoute Source #

js_bootstrap_datepicker_min_js :: StaticRoute Source #

js_bootstrap_js :: StaticRoute Source #

js_bootstrap_min_js :: StaticRoute Source #

js_excanvas_js :: StaticRoute Source #

js_excanvas_min_js :: StaticRoute Source #

js_jquery_cookie_js :: StaticRoute Source #

js_jquery_flot_canvas_js :: StaticRoute Source #

js_jquery_flot_canvas_min_js :: StaticRoute Source #

js_jquery_flot_categories_js :: StaticRoute Source #

js_jquery_flot_categories_min_js :: StaticRoute Source #

js_jquery_flot_crosshair_js :: StaticRoute Source #

js_jquery_flot_crosshair_min_js :: StaticRoute Source #

js_jquery_flot_errorbars_js :: StaticRoute Source #

js_jquery_flot_errorbars_min_js :: StaticRoute Source #

js_jquery_flot_fillbetween_js :: StaticRoute Source #

js_jquery_flot_fillbetween_min_js :: StaticRoute Source #

js_jquery_flot_image_js :: StaticRoute Source #

js_jquery_flot_image_min_js :: StaticRoute Source #

js_jquery_flot_js :: StaticRoute Source #

js_jquery_flot_min_js :: StaticRoute Source #

js_jquery_flot_navigate_js :: StaticRoute Source #

js_jquery_flot_navigate_min_js :: StaticRoute Source #

js_jquery_flot_pie_js :: StaticRoute Source #

js_jquery_flot_pie_min_js :: StaticRoute Source #

js_jquery_flot_resize_js :: StaticRoute Source #

js_jquery_flot_resize_min_js :: StaticRoute Source #

js_jquery_flot_selection_js :: StaticRoute Source #

js_jquery_flot_selection_min_js :: StaticRoute Source #

js_jquery_flot_stack_js :: StaticRoute Source #

js_jquery_flot_stack_min_js :: StaticRoute Source #

js_jquery_flot_symbol_js :: StaticRoute Source #

js_jquery_flot_symbol_min_js :: StaticRoute Source #

js_jquery_flot_threshold_js :: StaticRoute Source #

js_jquery_flot_threshold_min_js :: StaticRoute Source #

js_jquery_flot_time_js :: StaticRoute Source #

js_jquery_flot_time_min_js :: StaticRoute Source #

js_jquery_flot_tooltip_js :: StaticRoute Source #

js_jquery_flot_tooltip_min_js :: StaticRoute Source #

js_jquery_hotkeys_js :: StaticRoute Source #

js_jquery_js :: StaticRoute Source #

js_jquery_min_js :: StaticRoute Source #

js_jquery_url_js :: StaticRoute Source #

js_typeahead_bundle_js :: StaticRoute Source #

js_typeahead_bundle_min_js :: StaticRoute Source #

data Capability Source #

Constructors

CapView
CapAdd
CapManage

Instances

Instances details

Bounded Capability Source #
Instance details Defined in Hledger.Web.WebOptions Methods minBound :: Capability # maxBound :: Capability #
Enum Capability Source #
Instance details Defined in Hledger.Web.WebOptions Methods succ :: Capability -> Capability # pred :: Capability -> Capability # toEnum :: Int -> Capability # fromEnum :: Capability -> Int # enumFrom :: Capability -> [Capability] # enumFromThen :: Capability -> Capability -> [Capability] # enumFromTo :: Capability -> Capability -> [Capability] # enumFromThenTo :: Capability -> Capability -> Capability -> [Capability] #
Eq Capability Source #
Instance details Defined in Hledger.Web.WebOptions Methods (==) :: Capability -> Capability -> Bool # (/=) :: Capability -> Capability -> Bool #
Ord Capability Source #
Instance details Defined in Hledger.Web.WebOptions Methods compare :: Capability -> Capability -> Ordering # (<) :: Capability -> Capability -> Bool # (<=) :: Capability -> Capability -> Bool # (>) :: Capability -> Capability -> Bool # (>=) :: Capability -> Capability -> Bool # max :: Capability -> Capability -> Capability # min :: Capability -> Capability -> Capability #
Show Capability Source #
Instance details Defined in Hledger.Web.WebOptions Methods showsPrec :: Int -> Capability -> ShowS # show :: Capability -> String # showList :: [Capability] -> ShowS #

data App Source #

The site argument for your application. This can be a good place to keep settings and values requiring initialization before your application starts running, such as database connections. Every handler will have access to the data present here.

Constructors

App
Fields settings :: AppConfig DefaultEnv Extra getStatic :: Static Settings for static file serving. httpManager :: Manager appOpts :: WebOpts appJournal :: IORef Journal

Instances

Instances details

RouteAttrs App Source #
Instance details Defined in Hledger.Web.Foundation Methods routeAttrs :: Route App -> Set Text #
ParseRoute App Source #
Instance details Defined in Hledger.Web.Foundation Methods parseRoute :: ([Text], [(Text, Text)]) -> Maybe (Route App) #
RenderRoute App Source #
Instance details Defined in Hledger.Web.Foundation Associated Types data Route App # Methods renderRoute :: Route App -> ([Text], [(Text, Text)]) #
Yesod App Source #
Instance details Defined in Hledger.Web.Foundation Methods approot :: Approot App # errorHandler :: ErrorResponse -> HandlerFor App TypedContent # defaultLayout :: WidgetFor App () -> HandlerFor App Html # urlParamRenderOverride :: App -> Route App -> [(Text, Text)] -> Maybe Builder # isAuthorized :: Route App -> Bool -> HandlerFor App AuthResult # isWriteRequest :: Route App -> HandlerFor App Bool # authRoute :: App -> Maybe (Route App) # cleanPath :: App -> [Text] -> Either [Text] [Text] # joinPath :: App -> Text -> [Text] -> [(Text, Text)] -> Builder # addStaticContent :: Text -> Text -> ByteString -> HandlerFor App (Maybe (Either Text (Route App, [(Text, Text)]))) # maximumContentLength :: App -> Maybe (Route App) -> Maybe Word64 # maximumContentLengthIO :: App -> Maybe (Route App) -> IO (Maybe Word64) # makeLogger :: App -> IO Logger # messageLoggerSource :: App -> Logger -> Loc -> LogSource -> LogLevel -> LogStr -> IO () # jsLoader :: App -> ScriptLoadPosition App # jsAttributes :: App -> [(Text, Text)] # jsAttributesHandler :: HandlerFor App [(Text, Text)] # makeSessionBackend :: App -> IO (Maybe SessionBackend) # fileUpload :: App -> RequestBodyLength -> FileUpload # shouldLogIO :: App -> LogSource -> LogLevel -> IO Bool # yesodMiddleware :: ToTypedContent res => HandlerFor App res -> HandlerFor App res # yesodWithInternalState :: App -> Maybe (Route App) -> (InternalState -> IO a) -> IO a # defaultMessageWidget :: Html -> HtmlUrl (Route App) -> WidgetFor App () #
YesodDispatch App Source #
Instance details Defined in Hledger.Web.Application Methods yesodDispatch :: YesodRunnerEnv App -> Application #
RenderMessage App FormMessage Source #
Instance details Defined in Hledger.Web.Foundation Methods renderMessage :: App -> [Lang] -> FormMessage -> Text #
Eq (Route App) Source #
Instance details Defined in Hledger.Web.Foundation Methods (==) :: Route App -> Route App -> Bool # (/=) :: Route App -> Route App -> Bool #
Read (Route App) Source #
Instance details Defined in Hledger.Web.Foundation Methods readsPrec :: Int -> ReadS (Route App) # readList :: ReadS [Route App] # readPrec :: ReadPrec (Route App) # readListPrec :: ReadPrec [Route App] #
Show (Route App) Source #
Instance details Defined in Hledger.Web.Foundation Methods showsPrec :: Int -> Route App -> ShowS # show :: Route App -> String # showList :: [Route App] -> ShowS #
data Route App Source #
Instance details Defined in Hledger.Web.Foundation data Route App = FaviconR \| RobotsR \| StaticR (Route Static) \| RootR \| JournalR \| RegisterR \| AddR \| ManageR \| EditR FilePath \| UploadR FilePath \| DownloadR FilePath \| VersionR \| AccountnamesR \| TransactionsR \| PricesR \| CommoditiesR \| AccountsR \| AccounttransactionsR AccountName

data ViewData Source #

A bundle of data useful for hledger-web request handlers and templates.

Constructors

VD

Fields

opts :: WebOpts
the command-line options at startup
today :: Day
today's date (for queries containing relative dates)
j :: Journal
the up-to-date parsed unfiltered journal
q :: Text
the current q parameter, the main query expression
m :: Query
a query parsed from the q parameter
qopts :: [QueryOpt]
query options parsed from the q parameter
caps :: [Capability]
capabilities enabled for this request

Instances

Instances details

Show ViewData Source #
Instance details Defined in Hledger.Web.Foundation Methods showsPrec :: Int -> ViewData -> ShowS # show :: ViewData -> String # showList :: [ViewData] -> ShowS #

type Form x = Html -> MForm (HandlerFor App) (FormResult x, Widget) Source #

type AppRoute = Route App Source #

A convenience alias.

type Widget = WidgetFor App () Source #

type Handler = HandlerFor App Source #

resourcesApp :: [ResourceTree String] Source #

getViewData :: Handler ViewData Source #

Gather data used by handlers and templates in the current request.

checkServerSideUiEnabled :: Handler () Source #

shouldShowSidebar :: Handler Bool Source #

Find out if the sidebar should be visible. Show it, unless there is a showsidebar cookie set to "0", or a ?sidebar=0 query parameter.

getCurrentJournal :: IORef Journal -> CliOpts -> Day -> Handler (Journal, Maybe String) Source #

Update our copy of the journal if the file changed. If there is an error while reloading, keep the old one and return the error, and set a ui message.

MsgInvalidInteger Text
MsgInvalidNumber Text
MsgInvalidEntry Text
MsgInvalidUrl Text
MsgInvalidEmail Text
MsgInvalidTimeFormat
MsgInvalidHour Text
MsgInvalidMinute Text
MsgInvalidSecond Text
MsgInvalidDay
MsgCsrfWarning
MsgValueRequired
MsgInputNotFound Text
MsgSelectNone
MsgInvalidBool Text
MsgBoolYes
MsgBoolNo
MsgDelete