tonalude-0.1.1.0: A standard library for Tonatona framework.

Safe HaskellNone
LanguageHaskell2010

Tonalude

Contents

Synopsis

Documentation

newtype Utf8Builder #

A builder of binary data, with the invariant that the underlying data is supposed to be UTF-8 encoded.

Since: rio-0.1.0.0

Constructors

Utf8Builder 
Instances
IsString Utf8Builder

Since: rio-0.1.0.0

Instance details

Defined in RIO.Prelude.Display

Semigroup Utf8Builder 
Instance details

Defined in RIO.Prelude.Display

Monoid Utf8Builder 
Instance details

Defined in RIO.Prelude.Display

Display Utf8Builder

Since: rio-0.1.0.0

Instance details

Defined in RIO.Prelude.Display

class Display a where #

A typeclass for values which can be converted to a Utf8Builder. The intention of this typeclass is to provide a human-friendly display of the data.

Since: rio-0.1.0.0

Minimal complete definition

display | textDisplay

Methods

display :: a -> Utf8Builder #

textDisplay :: a -> Text #

Display data as Text, which will also be used for display if it is not overriden.

Since: rio-0.1.7.0

Instances
Display Char

Since: rio-0.1.0.0

Instance details

Defined in RIO.Prelude.Display

Display Double 
Instance details

Defined in RIO.Prelude.Display

Display Float

Since: rio-0.1.0.0

Instance details

Defined in RIO.Prelude.Display

Display Int

Since: rio-0.1.0.0

Instance details

Defined in RIO.Prelude.Display

Display Int8

Since: rio-0.1.0.0

Instance details

Defined in RIO.Prelude.Display

Display Int16

Since: rio-0.1.0.0

Instance details

Defined in RIO.Prelude.Display

Display Int32

Since: rio-0.1.0.0

Instance details

Defined in RIO.Prelude.Display

Display Int64

Since: rio-0.1.0.0

Instance details

Defined in RIO.Prelude.Display

Display Integer

Since: rio-0.1.0.0

Instance details

Defined in RIO.Prelude.Display

Display Word

Since: rio-0.1.0.0

Instance details

Defined in RIO.Prelude.Display

Display Word8

Since: rio-0.1.0.0

Instance details

Defined in RIO.Prelude.Display

Display Word16

Since: rio-0.1.0.0

Instance details

Defined in RIO.Prelude.Display

Display Word32

Since: rio-0.1.0.0

Instance details

Defined in RIO.Prelude.Display

Display Word64

Since: rio-0.1.0.0

Instance details

Defined in RIO.Prelude.Display

Display IOException

Since: rio-0.1.0.0

Instance details

Defined in RIO.Prelude.Display

Display SomeException

Since: rio-0.1.0.0

Instance details

Defined in RIO.Prelude.Display

Display Utf8Builder

Since: rio-0.1.0.0

Instance details

Defined in RIO.Prelude.Display

Display Text

Since: rio-0.1.0.0

Instance details

Defined in RIO.Prelude.Display

Display Text

Since: rio-0.1.0.0

Instance details

Defined in RIO.Prelude.Display

Display (ProcessConfig a b c)

Since: rio-0.1.0.0

Instance details

Defined in RIO.Prelude.Display

displayShow :: Show a => a -> Utf8Builder #

Use the Show instance for a value to convert it to a Utf8Builder.

Since: rio-0.1.0.0

utf8BuilderToText :: Utf8Builder -> Text #

Convert a Utf8Builder value into a strict Text.

Since: rio-0.1.0.0

utf8BuilderToLazyText :: Utf8Builder -> Text #

Convert a Utf8Builder value into a lazy Text.

Since: rio-0.1.0.0

displayBytesUtf8 :: ByteString -> Utf8Builder #

Convert a ByteString into a Utf8Builder.

NOTE This function performs no checks to ensure that the data is, in fact, UTF8 encoded. If you provide non-UTF8 data, later functions may fail.

Since: rio-0.1.0.0

writeFileUtf8Builder :: FilePath -> Utf8Builder -> RIO env () Source #

Write the given Utf8Builder value to a file.

withLazyFile :: FilePath -> (ByteString -> RIO env a) -> RIO env a Source #

Lazily get the contents of a file. Unlike readFile, this ensures that if an exception is thrown, the file handle is closed immediately.

readFileBinary :: FilePath -> RIO env ByteString Source #

Same as readFile, but focused on RIO

writeFileBinary :: FilePath -> ByteString -> RIO env () Source #

Same as writeFile, but focused on RIO

readFileUtf8 :: FilePath -> RIO env Text Source #

Read a file in UTF8 encoding, throwing an exception on invalid character encoding.

This function will use OS-specific line ending handling.

writeFileUtf8 :: FilePath -> Text -> RIO env () Source #

Write a file in UTF8 encoding

This function will use OS-specific line ending handling.

newtype RIO env a #

The Reader+IO monad. This is different from a ReaderT because:

  • It's not a transformer, it hardcodes IO for simpler usage and error messages.
  • Instances of typeclasses like MonadLogger are implemented using classes defined on the environment, instead of using an underlying monad.

Constructors

RIO 

Fields

Instances
(Monoid w, HasWriteRef w env) => MonadWriter w (RIO env) 
Instance details

Defined in RIO.Prelude.RIO

Methods

writer :: (a, w) -> RIO env a #

tell :: w -> RIO env () #

listen :: RIO env a -> RIO env (a, w) #

pass :: RIO env (a, w -> w) -> RIO env a #

HasStateRef s env => MonadState s (RIO env) 
Instance details

Defined in RIO.Prelude.RIO

Methods

get :: RIO env s #

put :: s -> RIO env () #

state :: (s -> (a, s)) -> RIO env a #

MonadReader env (RIO env) 
Instance details

Defined in RIO.Prelude.RIO

Methods

ask :: RIO env env #

local :: (env -> env) -> RIO env a -> RIO env a #

reader :: (env -> a) -> RIO env a #

Monad (RIO env) 
Instance details

Defined in RIO.Prelude.RIO

Methods

(>>=) :: RIO env a -> (a -> RIO env b) -> RIO env b #

(>>) :: RIO env a -> RIO env b -> RIO env b #

return :: a -> RIO env a #

fail :: String -> RIO env a #

Functor (RIO env) 
Instance details

Defined in RIO.Prelude.RIO

Methods

fmap :: (a -> b) -> RIO env a -> RIO env b #

(<$) :: a -> RIO env b -> RIO env a #

Applicative (RIO env) 
Instance details

Defined in RIO.Prelude.RIO

Methods

pure :: a -> RIO env a #

(<*>) :: RIO env (a -> b) -> RIO env a -> RIO env b #

liftA2 :: (a -> b -> c) -> RIO env a -> RIO env b -> RIO env c #

(*>) :: RIO env a -> RIO env b -> RIO env b #

(<*) :: RIO env a -> RIO env b -> RIO env a #

MonadIO (RIO env) 
Instance details

Defined in RIO.Prelude.RIO

Methods

liftIO :: IO a -> RIO env a #

MonadThrow (RIO env) 
Instance details

Defined in RIO.Prelude.RIO

Methods

throwM :: Exception e => e -> RIO env a #

PrimMonad (RIO env) 
Instance details

Defined in RIO.Prelude.RIO

Associated Types

type PrimState (RIO env) :: Type #

Methods

primitive :: (State# (PrimState (RIO env)) -> (#State# (PrimState (RIO env)), a#)) -> RIO env a #

MonadUnliftIO (RIO env) 
Instance details

Defined in RIO.Prelude.RIO

Methods

askUnliftIO :: RIO env (UnliftIO (RIO env)) #

withRunInIO :: ((forall a. RIO env a -> IO a) -> IO b) -> RIO env b #

type PrimState (RIO env) 
Instance details

Defined in RIO.Prelude.RIO

type PrimState (RIO env) = PrimState IO

tshow :: Show a => a -> Text #

class Applicative f => Alternative (f :: Type -> Type) #

A monoid on applicative functors.

If defined, some and many should be the least solutions of the equations:

Minimal complete definition

empty, (<|>)

Instances
Alternative []

Since: base-2.1

Instance details

Defined in GHC.Base

Methods

empty :: [a] #

(<|>) :: [a] -> [a] -> [a] #

some :: [a] -> [[a]] #

many :: [a] -> [[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] #

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] #

Alternative Concurrently 
Instance details

Defined in Control.Concurrent.Async

Alternative ZipList

Since: base-4.11.0.0

Instance details

Defined in Control.Applicative

Methods

empty :: ZipList a #

(<|>) :: ZipList a -> ZipList a -> ZipList a #

some :: ZipList a -> ZipList [a] #

many :: ZipList a -> ZipList [a] #

Alternative STM

Since: base-4.8.0.0

Instance details

Defined in GHC.Conc.Sync

Methods

empty :: STM a #

(<|>) :: STM a -> STM a -> STM a #

some :: STM a -> STM [a] #

many :: STM a -> STM [a] #

Alternative Vector 
Instance details

Defined in Data.Vector

Methods

empty :: Vector a #

(<|>) :: Vector a -> Vector a -> Vector a #

some :: Vector a -> Vector [a] #

many :: Vector a -> Vector [a] #

Alternative (U1 :: Type -> Type)

Since: base-4.9.0.0

Instance details

Defined in GHC.Generics

Methods

empty :: U1 a #

(<|>) :: U1 a -> U1 a -> U1 a #

some :: U1 a -> U1 [a] #

many :: U1 a -> U1 [a] #

MonadPlus m => Alternative (WrappedMonad m)

Since: base-2.1

Instance details

Defined in Control.Applicative

Methods

empty :: WrappedMonad m a #

(<|>) :: WrappedMonad m a -> WrappedMonad m a -> WrappedMonad m a #

some :: WrappedMonad m a -> WrappedMonad m [a] #

many :: WrappedMonad m a -> WrappedMonad m [a] #

ArrowPlus a => Alternative (ArrowMonad a)

Since: base-4.6.0.0

Instance details

Defined in Control.Arrow

Methods

empty :: ArrowMonad a a0 #

(<|>) :: ArrowMonad a a0 -> ArrowMonad a a0 -> ArrowMonad a a0 #

some :: ArrowMonad a a0 -> ArrowMonad a [a0] #

many :: ArrowMonad a a0 -> ArrowMonad a [a0] #

Alternative (Proxy :: Type -> Type)

Since: base-4.9.0.0

Instance details

Defined in Data.Proxy

Methods

empty :: Proxy a #

(<|>) :: Proxy a -> Proxy a -> Proxy a #

some :: Proxy a -> Proxy [a] #

many :: Proxy a -> Proxy [a] #

MonadUnliftIO m => Alternative (Conc m)

Since: unliftio-0.2.9.0

Instance details

Defined in UnliftIO.Internals.Async

Methods

empty :: Conc m a #

(<|>) :: Conc m a -> Conc m a -> Conc m a #

some :: Conc m a -> Conc m [a] #

many :: Conc m a -> Conc m [a] #

MonadUnliftIO m => Alternative (Concurrently m)

Composing two unlifted Concurrently values using Alternative is the equivalent to using a race combinator, the asynchrounous sub-routine that returns a value first is the one that gets it's value returned, the slowest sub-routine gets cancelled and it's thread is killed.

Since: unliftio-0.1.0.0

Instance details

Defined in UnliftIO.Internals.Async

Methods

empty :: Concurrently m a #

(<|>) :: Concurrently m a -> Concurrently m a -> Concurrently m a #

some :: Concurrently m a -> Concurrently m [a] #

many :: Concurrently m a -> Concurrently m [a] #

Alternative f => Alternative (Rec1 f)

Since: base-4.9.0.0

Instance details

Defined in GHC.Generics

Methods

empty :: Rec1 f a #

(<|>) :: Rec1 f a -> Rec1 f a -> Rec1 f a #

some :: Rec1 f a -> Rec1 f [a] #

many :: Rec1 f a -> Rec1 f [a] #

(ArrowZero a, ArrowPlus a) => Alternative (WrappedArrow a b)

Since: base-2.1

Instance details

Defined in Control.Applicative

Methods

empty :: WrappedArrow a b a0 #

(<|>) :: WrappedArrow a b a0 -> WrappedArrow a b a0 -> WrappedArrow a b a0 #

some :: WrappedArrow a b a0 -> WrappedArrow a b [a0] #

many :: WrappedArrow a b a0 -> WrappedArrow a b [a0] #

(Functor m, Monad m, Error e) => Alternative (ErrorT e m) 
Instance details

Defined in Control.Monad.Trans.Error

Methods

empty :: ErrorT e m a #

(<|>) :: ErrorT e m a -> ErrorT e m a -> ErrorT e m a #

some :: ErrorT e m a -> ErrorT e m [a] #

many :: ErrorT e m a -> ErrorT e m [a] #

(Alternative f, Alternative g) => Alternative (f :*: g)

Since: base-4.9.0.0

Instance details

Defined in GHC.Generics

Methods

empty :: (f :*: g) a #

(<|>) :: (f :*: g) a -> (f :*: g) a -> (f :*: g) a #

some :: (f :*: g) a -> (f :*: g) [a] #

many :: (f :*: g) a -> (f :*: g) [a] #

Alternative m => Alternative (ReaderT r m) 
Instance details

Defined in Control.Monad.Trans.Reader

Methods

empty :: ReaderT r m a #

(<|>) :: ReaderT r m a -> ReaderT r m a -> ReaderT r m a #

some :: ReaderT r m a -> ReaderT r m [a] #

many :: ReaderT r m a -> ReaderT r m [a] #

Alternative f => Alternative (M1 i c f)

Since: base-4.9.0.0

Instance details

Defined in GHC.Generics

Methods

empty :: M1 i c f a #

(<|>) :: M1 i c f a -> M1 i c f a -> M1 i c f a #

some :: M1 i c f a -> M1 i c f [a] #

many :: M1 i c f a -> M1 i c f [a] #

(Alternative f, Applicative g) => Alternative (f :.: g)

Since: base-4.9.0.0

Instance details

Defined in GHC.Generics

Methods

empty :: (f :.: g) a #

(<|>) :: (f :.: g) a -> (f :.: g) a -> (f :.: g) a #

some :: (f :.: g) a -> (f :.: g) [a] #

many :: (f :.: g) a -> (f :.: g) [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:

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

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

(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.

liftA2 :: (a -> b -> c) -> f a -> f b -> f c #

Lift a binary function to actions.

Some functors support an implementation of liftA2 that is more efficient than the default one. In particular, if fmap is an expensive operation, it is likely better to use liftA2 than to fmap over the structure and then use <*>.

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

Sequence actions, discarding the value of the first argument.

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

Sequence actions, discarding the value of the second argument.

Instances
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 Concurrently 
Instance details

Defined in Control.Concurrent.Async

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 STM

Since: base-4.8.0.0

Instance details

Defined in GHC.Conc.Sync

Methods

pure :: a -> STM a #

(<*>) :: STM (a -> b) -> STM a -> STM b #

liftA2 :: (a -> b -> c) -> STM a -> STM b -> STM c #

(*>) :: STM a -> STM b -> STM b #

(<*) :: STM a -> STM b -> STM 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 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 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 Memoized 
Instance details

Defined in UnliftIO.Memoize

Methods

pure :: a -> Memoized a #

(<*>) :: Memoized (a -> b) -> Memoized a -> Memoized b #

liftA2 :: (a -> b -> c) -> Memoized a -> Memoized b -> Memoized c #

(*>) :: Memoized a -> Memoized b -> Memoized b #

(<*) :: Memoized a -> Memoized b -> Memoized 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 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 (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, Strings 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) #

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 #

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 #

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 #

Applicative (RIO env) 
Instance details

Defined in RIO.Prelude.RIO

Methods

pure :: a -> RIO env a #

(<*>) :: RIO env (a -> b) -> RIO env a -> RIO env b #

liftA2 :: (a -> b -> c) -> RIO env a -> RIO env b -> RIO env c #

(*>) :: RIO env a -> RIO env b -> RIO env b #

(<*) :: RIO env a -> RIO env b -> RIO env 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 #

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 #

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, 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 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 ((->) a :: Type -> Type)

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 #

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 #

(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 #

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 #

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 #

(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 #

liftA :: Applicative f => (a -> b) -> f a -> f b #

Lift a function to actions. This function may be used as a value for fmap in a Functor instance.

liftA3 :: Applicative f => (a -> b -> c -> d) -> f a -> f b -> f c -> f d #

Lift a ternary function to actions.

many :: Alternative f => f a -> f [a] #

Zero or more.

optional :: Alternative f => f a -> f (Maybe a) #

One or none.

some :: Alternative f => f a -> f [a] #

One or more.

(<|>) :: Alternative f => f a -> f a -> f a infixl 3 #

An associative binary operation

first :: Arrow a => a b c -> a (b, d) (c, d) #

Send the first component of the input through the argument arrow, and copy the rest unchanged to the output.

second :: Arrow a => a b c -> a (d, b) (d, c) #

A mirror image of first.

The default definition may be overridden with a more efficient version if desired.

(&&&) :: Arrow a => a b c -> a b c' -> a b (c, c') infixr 3 #

Fanout: send the input to both argument arrows and combine their output.

The default definition may be overridden with a more efficient version if desired.

(***) :: Arrow a => a b c -> a b' c' -> a (b, b') (c, c') infixr 3 #

Split the input between the two argument arrows and combine their output. Note that this is in general not a functor.

The default definition may be overridden with a more efficient version if desired.

(>>>) :: Category cat => cat a b -> cat b c -> cat a c infixr 1 #

Left-to-right composition

class NFData a where #

A class of types that can be fully evaluated.

Since: deepseq-1.1.0.0

Minimal complete definition

Nothing

Methods

rnf :: a -> () #

rnf should reduce its argument to normal form (that is, fully evaluate all sub-components), and then return '()'.

Generic NFData deriving

Starting with GHC 7.2, you can automatically derive instances for types possessing a Generic instance.

Note: Generic1 can be auto-derived starting with GHC 7.4

{-# LANGUAGE DeriveGeneric #-}

import GHC.Generics (Generic, Generic1)
import Control.DeepSeq

data Foo a = Foo a String
             deriving (Eq, Generic, Generic1)

instance NFData a => NFData (Foo a)
instance NFData1 Foo

data Colour = Red | Green | Blue
              deriving Generic

instance NFData Colour

Starting with GHC 7.10, the example above can be written more concisely by enabling the new DeriveAnyClass extension:

{-# LANGUAGE DeriveGeneric, DeriveAnyClass #-}

import GHC.Generics (Generic)
import Control.DeepSeq

data Foo a = Foo a String
             deriving (Eq, Generic, Generic1, NFData, NFData1)

data Colour = Red | Green | Blue
              deriving (Generic, NFData)

Compatibility with previous deepseq versions

Prior to version 1.4.0.0, the default implementation of the rnf method was defined as

rnf a = seq a ()

However, starting with deepseq-1.4.0.0, the default implementation is based on DefaultSignatures allowing for more accurate auto-derived NFData instances. If you need the previously used exact default rnf method implementation semantics, use

instance NFData Colour where rnf x = seq x ()

or alternatively

instance NFData Colour where rnf = rwhnf

or

{-# LANGUAGE BangPatterns #-}
instance NFData Colour where rnf !_ = ()
Instances
NFData Bool 
Instance details

Defined in Control.DeepSeq

Methods

rnf :: Bool -> () #

NFData Char 
Instance details

Defined in Control.DeepSeq

Methods

rnf :: Char -> () #

NFData Double 
Instance details

Defined in Control.DeepSeq

Methods

rnf :: Double -> () #

NFData Float 
Instance details

Defined in Control.DeepSeq

Methods

rnf :: Float -> () #

NFData Int 
Instance details

Defined in Control.DeepSeq

Methods

rnf :: Int -> () #

NFData Int8 
Instance details

Defined in Control.DeepSeq

Methods

rnf :: Int8 -> () #

NFData Int16 
Instance details

Defined in Control.DeepSeq

Methods

rnf :: Int16 -> () #

NFData Int32 
Instance details

Defined in Control.DeepSeq

Methods

rnf :: Int32 -> () #

NFData Int64 
Instance details

Defined in Control.DeepSeq

Methods

rnf :: Int64 -> () #

NFData Integer 
Instance details

Defined in Control.DeepSeq

Methods

rnf :: Integer -> () #

NFData Natural

Since: deepseq-1.4.0.0

Instance details

Defined in Control.DeepSeq

Methods

rnf :: Natural -> () #

NFData Ordering 
Instance details

Defined in Control.DeepSeq

Methods

rnf :: Ordering -> () #

NFData Word 
Instance details

Defined in Control.DeepSeq

Methods

rnf :: Word -> () #

NFData Word8 
Instance details

Defined in Control.DeepSeq

Methods

rnf :: Word8 -> () #

NFData Word16 
Instance details

Defined in Control.DeepSeq

Methods

rnf :: Word16 -> () #

NFData Word32 
Instance details

Defined in Control.DeepSeq

Methods

rnf :: Word32 -> () #

NFData Word64 
Instance details

Defined in Control.DeepSeq

Methods

rnf :: Word64 -> () #

NFData CallStack

Since: deepseq-1.4.2.0

Instance details

Defined in Control.DeepSeq

Methods

rnf :: CallStack -> () #

NFData () 
Instance details

Defined in Control.DeepSeq

Methods

rnf :: () -> () #

NFData TyCon

NOTE: Prior to deepseq-1.4.4.0 this instance was only defined for base-4.8.0.0 and later.

Since: deepseq-1.4.0.0

Instance details

Defined in Control.DeepSeq

Methods

rnf :: TyCon -> () #

NFData ThreadId

Since: deepseq-1.4.0.0

Instance details

Defined in Control.DeepSeq

Methods

rnf :: ThreadId -> () #

NFData Void

Defined as rnf = absurd.

Since: deepseq-1.4.0.0

Instance details

Defined in Control.DeepSeq

Methods

rnf :: Void -> () #

NFData Unique

Since: deepseq-1.4.0.0

Instance details

Defined in Control.DeepSeq

Methods

rnf :: Unique -> () #

NFData Version

Since: deepseq-1.3.0.0

Instance details

Defined in Control.DeepSeq

Methods

rnf :: Version -> () #

NFData ExitCode

Since: deepseq-1.4.2.0

Instance details

Defined in Control.DeepSeq

Methods

rnf :: ExitCode -> () #

NFData MaskingState

Since: deepseq-1.4.4.0

Instance details

Defined in Control.DeepSeq

Methods

rnf :: MaskingState -> () #

NFData TypeRep

NOTE: Prior to deepseq-1.4.4.0 this instance was only defined for base-4.8.0.0 and later.

Since: deepseq-1.4.0.0

Instance details

Defined in Control.DeepSeq

Methods

rnf :: TypeRep -> () #

NFData All

Since: deepseq-1.4.0.0

Instance details

Defined in Control.DeepSeq

Methods

rnf :: All -> () #

NFData Any

Since: deepseq-1.4.0.0

Instance details

Defined in Control.DeepSeq

Methods

rnf :: Any -> () #

NFData CChar

Since: deepseq-1.4.0.0

Instance details

Defined in Control.DeepSeq

Methods

rnf :: CChar -> () #

NFData CSChar

Since: deepseq-1.4.0.0

Instance details

Defined in Control.DeepSeq

Methods

rnf :: CSChar -> () #

NFData CUChar

Since: deepseq-1.4.0.0

Instance details

Defined in Control.DeepSeq

Methods

rnf :: CUChar -> () #

NFData CShort

Since: deepseq-1.4.0.0

Instance details

Defined in Control.DeepSeq

Methods

rnf :: CShort -> () #

NFData CUShort

Since: deepseq-1.4.0.0

Instance details

Defined in Control.DeepSeq

Methods

rnf :: CUShort -> () #

NFData CInt

Since: deepseq-1.4.0.0

Instance details

Defined in Control.DeepSeq

Methods

rnf :: CInt -> () #

NFData CUInt

Since: deepseq-1.4.0.0

Instance details

Defined in Control.DeepSeq

Methods

rnf :: CUInt -> () #

NFData CLong

Since: deepseq-1.4.0.0

Instance details

Defined in Control.DeepSeq

Methods

rnf :: CLong -> () #

NFData CULong

Since: deepseq-1.4.0.0

Instance details

Defined in Control.DeepSeq

Methods

rnf :: CULong -> () #

NFData CLLong

Since: deepseq-1.4.0.0

Instance details

Defined in Control.DeepSeq

Methods

rnf :: CLLong -> () #

NFData CULLong

Since: deepseq-1.4.0.0

Instance details

Defined in Control.DeepSeq

Methods

rnf :: CULLong -> () #

NFData CBool

Since: deepseq-1.4.3.0

Instance details

Defined in Control.DeepSeq

Methods

rnf :: CBool -> () #

NFData CFloat

Since: deepseq-1.4.0.0

Instance details

Defined in Control.DeepSeq

Methods

rnf :: CFloat -> () #

NFData CDouble

Since: deepseq-1.4.0.0

Instance details

Defined in Control.DeepSeq

Methods

rnf :: CDouble -> () #

NFData CPtrdiff

Since: deepseq-1.4.0.0

Instance details

Defined in Control.DeepSeq

Methods

rnf :: CPtrdiff -> () #

NFData CSize

Since: deepseq-1.4.0.0

Instance details

Defined in Control.DeepSeq

Methods

rnf :: CSize -> () #

NFData CWchar

Since: deepseq-1.4.0.0

Instance details

Defined in Control.DeepSeq

Methods

rnf :: CWchar -> () #

NFData CSigAtomic

Since: deepseq-1.4.0.0

Instance details

Defined in Control.DeepSeq

Methods

rnf :: CSigAtomic -> () #

NFData CClock

Since: deepseq-1.4.0.0

Instance details

Defined in Control.DeepSeq

Methods

rnf :: CClock -> () #

NFData CTime

Since: deepseq-1.4.0.0

Instance details

Defined in Control.DeepSeq

Methods

rnf :: CTime -> () #

NFData CUSeconds

Since: deepseq-1.4.0.0

Instance details

Defined in Control.DeepSeq

Methods

rnf :: CUSeconds -> () #

NFData CSUSeconds

Since: deepseq-1.4.0.0

Instance details

Defined in Control.DeepSeq

Methods

rnf :: CSUSeconds -> () #

NFData CFile

Since: deepseq-1.4.0.0

Instance details

Defined in Control.DeepSeq

Methods

rnf :: CFile -> () #

NFData CFpos

Since: deepseq-1.4.0.0

Instance details

Defined in Control.DeepSeq

Methods

rnf :: CFpos -> () #

NFData CJmpBuf

Since: deepseq-1.4.0.0

Instance details

Defined in Control.DeepSeq

Methods

rnf :: CJmpBuf -> () #

NFData CIntPtr

Since: deepseq-1.4.0.0

Instance details

Defined in Control.DeepSeq

Methods

rnf :: CIntPtr -> () #

NFData CUIntPtr

Since: deepseq-1.4.0.0

Instance details

Defined in Control.DeepSeq

Methods

rnf :: CUIntPtr -> () #

NFData CIntMax

Since: deepseq-1.4.0.0

Instance details

Defined in Control.DeepSeq

Methods

rnf :: CIntMax -> () #

NFData CUIntMax

Since: deepseq-1.4.0.0

Instance details

Defined in Control.DeepSeq

Methods

rnf :: CUIntMax -> () #

NFData Fingerprint

Since: deepseq-1.4.0.0

Instance details

Defined in Control.DeepSeq

Methods

rnf :: Fingerprint -> () #

NFData SrcLoc

Since: deepseq-1.4.2.0

Instance details

Defined in Control.DeepSeq

Methods

rnf :: SrcLoc -> () #

NFData ShortByteString 
Instance details

Defined in Data.ByteString.Short.Internal

Methods

rnf :: ShortByteString -> () #

NFData ByteString 
Instance details

Defined in Data.ByteString.Lazy.Internal

Methods

rnf :: ByteString -> () #

NFData ByteString 
Instance details

Defined in Data.ByteString.Internal

Methods

rnf :: ByteString -> () #

NFData IntSet 
Instance details

Defined in Data.IntSet.Internal

Methods

rnf :: IntSet -> () #

NFData LocalTime 
Instance details

Defined in Data.Time.LocalTime.Internal.LocalTime

Methods

rnf :: LocalTime -> () #

NFData ZonedTime 
Instance details

Defined in Data.Time.LocalTime.Internal.ZonedTime

Methods

rnf :: ZonedTime -> () #

NFData UnicodeException 
Instance details

Defined in Data.Text.Encoding.Error

Methods

rnf :: UnicodeException -> () #

NFData a => NFData [a] 
Instance details

Defined in Control.DeepSeq

Methods

rnf :: [a] -> () #

NFData a => NFData (Maybe a) 
Instance details

Defined in Control.DeepSeq

Methods

rnf :: Maybe a -> () #

NFData a => NFData (Ratio a) 
Instance details

Defined in Control.DeepSeq

Methods

rnf :: Ratio a -> () #

NFData (Ptr a)

Since: deepseq-1.4.2.0

Instance details

Defined in Control.DeepSeq

Methods

rnf :: Ptr a -> () #

NFData (FunPtr a)

Since: deepseq-1.4.2.0

Instance details

Defined in Control.DeepSeq

Methods

rnf :: FunPtr a -> () #

NFData a => NFData (Complex a) 
Instance details

Defined in Control.DeepSeq

Methods

rnf :: Complex a -> () #

NFData (Fixed a)

Since: deepseq-1.3.0.0

Instance details

Defined in Control.DeepSeq

Methods

rnf :: Fixed a -> () #

NFData a => NFData (Min a)

Since: deepseq-1.4.2.0

Instance details

Defined in Control.DeepSeq

Methods

rnf :: Min a -> () #

NFData a => NFData (Max a)

Since: deepseq-1.4.2.0

Instance details

Defined in Control.DeepSeq

Methods

rnf :: Max a -> () #

NFData a => NFData (First a)

Since: deepseq-1.4.2.0

Instance details

Defined in Control.DeepSeq

Methods

rnf :: First a -> () #

NFData a => NFData (Last a)

Since: deepseq-1.4.2.0

Instance details

Defined in Control.DeepSeq

Methods

rnf :: Last a -> () #

NFData m => NFData (WrappedMonoid m)

Since: deepseq-1.4.2.0

Instance details

Defined in Control.DeepSeq

Methods

rnf :: WrappedMonoid m -> () #

NFData a => NFData (Option a)

Since: deepseq-1.4.2.0

Instance details

Defined in Control.DeepSeq

Methods

rnf :: Option a -> () #

NFData (StableName a)

Since: deepseq-1.4.0.0

Instance details

Defined in Control.DeepSeq

Methods

rnf :: StableName a -> () #

NFData a => NFData (ZipList a)

Since: deepseq-1.4.0.0

Instance details

Defined in Control.DeepSeq

Methods

rnf :: ZipList a -> () #

NFData a => NFData (Identity a)

Since: deepseq-1.4.0.0

Instance details

Defined in Control.DeepSeq

Methods

rnf :: Identity a -> () #

NFData (IORef a)

NOTE: Only strict in the reference and not the referenced value.

Since: deepseq-1.4.2.0

Instance details

Defined in Control.DeepSeq

Methods

rnf :: IORef a -> () #

NFData a => NFData (First a)

Since: deepseq-1.4.0.0

Instance details

Defined in Control.DeepSeq

Methods

rnf :: First a -> () #

NFData a => NFData (Last a)

Since: deepseq-1.4.0.0

Instance details

Defined in Control.DeepSeq

Methods

rnf :: Last a -> () #

NFData a => NFData (Dual a)

Since: deepseq-1.4.0.0

Instance details

Defined in Control.DeepSeq

Methods

rnf :: Dual a -> () #

NFData a => NFData (Sum a)

Since: deepseq-1.4.0.0

Instance details

Defined in Control.DeepSeq

Methods

rnf :: Sum a -> () #

NFData a => NFData (Product a)

Since: deepseq-1.4.0.0

Instance details

Defined in Control.DeepSeq

Methods

rnf :: Product a -> () #

NFData a => NFData (Down a)

Since: deepseq-1.4.0.0

Instance details

Defined in Control.DeepSeq

Methods

rnf :: Down a -> () #

NFData (MVar a)

NOTE: Only strict in the reference and not the referenced value.

Since: deepseq-1.4.2.0

Instance details

Defined in Control.DeepSeq

Methods

rnf :: MVar a -> () #

NFData a => NFData (NonEmpty a)

Since: deepseq-1.4.2.0

Instance details

Defined in Control.DeepSeq

Methods

rnf :: NonEmpty a -> () #

NFData a => NFData (IntMap a) 
Instance details

Defined in Data.IntMap.Internal

Methods

rnf :: IntMap a -> () #

NFData a => NFData (Set a) 
Instance details

Defined in Data.Set.Internal

Methods

rnf :: Set a -> () #

NFData a => NFData (Hashed a) 
Instance details

Defined in Data.Hashable.Class

Methods

rnf :: Hashed a -> () #

NFData a => NFData (Vector a) 
Instance details

Defined in Data.Vector

Methods

rnf :: Vector a -> () #

NFData (Vector a) 
Instance details

Defined in Data.Vector.Unboxed.Base

Methods

rnf :: Vector a -> () #

NFData a => NFData (HashSet a) 
Instance details

Defined in Data.HashSet.Base

Methods

rnf :: HashSet a -> () #

NFData (a -> b)

This instance is for convenience and consistency with seq. This assumes that WHNF is equivalent to NF for functions.

Since: deepseq-1.3.0.0

Instance details

Defined in Control.DeepSeq

Methods

rnf :: (a -> b) -> () #

(NFData a, NFData b) => NFData (Either a b) 
Instance details

Defined in Control.DeepSeq

Methods

rnf :: Either a b -> () #

(NFData a, NFData b) => NFData (a, b) 
Instance details

Defined in Control.DeepSeq

Methods

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

(NFData a, NFData b) => NFData (Array a b) 
Instance details

Defined in Control.DeepSeq

Methods

rnf :: Array a b -> () #

(NFData a, NFData b) => NFData (Arg a b)

Since: deepseq-1.4.2.0

Instance details

Defined in Control.DeepSeq

Methods

rnf :: Arg a b -> () #

NFData (Proxy a)

Since: deepseq-1.4.0.0

Instance details

Defined in Control.DeepSeq

Methods

rnf :: Proxy a -> () #

NFData (STRef s a)

NOTE: Only strict in the reference and not the referenced value.

Since: deepseq-1.4.2.0

Instance details

Defined in Control.DeepSeq

Methods

rnf :: STRef s a -> () #

(NFData k, NFData a) => NFData (Map k a) 
Instance details

Defined in Data.Map.Internal

Methods

rnf :: Map k a -> () #

NFData (MVector s a) 
Instance details

Defined in Data.Vector.Unboxed.Base

Methods

rnf :: MVector s a -> () #

(NFData k, NFData v) => NFData (HashMap k v) 
Instance details

Defined in Data.HashMap.Base

Methods

rnf :: HashMap k v -> () #

(NFData k, NFData v) => NFData (Leaf k v) 
Instance details

Defined in Data.HashMap.Base

Methods

rnf :: Leaf k v -> () #

(NFData a1, NFData a2, NFData a3) => NFData (a1, a2, a3) 
Instance details

Defined in Control.DeepSeq

Methods

rnf :: (a1, a2, a3) -> () #

NFData a => NFData (Const a b)

Since: deepseq-1.4.0.0

Instance details

Defined in Control.DeepSeq

Methods

rnf :: Const a b -> () #

NFData (a :~: b)

Since: deepseq-1.4.3.0

Instance details

Defined in Control.DeepSeq

Methods

rnf :: (a :~: b) -> () #

(NFData a1, NFData a2, NFData a3, NFData a4) => NFData (a1, a2, a3, a4) 
Instance details

Defined in Control.DeepSeq

Methods

rnf :: (a1, a2, a3, a4) -> () #

(NFData1 f, NFData1 g, NFData a) => NFData (Product f g a)

Since: deepseq-1.4.3.0

Instance details

Defined in Control.DeepSeq

Methods

rnf :: Product f g a -> () #

(NFData1 f, NFData1 g, NFData a) => NFData (Sum f g a)

Since: deepseq-1.4.3.0

Instance details

Defined in Control.DeepSeq

Methods

rnf :: Sum f g a -> () #

NFData (a :~~: b)

Since: deepseq-1.4.3.0

Instance details

Defined in Control.DeepSeq

Methods

rnf :: (a :~~: b) -> () #

(NFData a1, NFData a2, NFData a3, NFData a4, NFData a5) => NFData (a1, a2, a3, a4, a5) 
Instance details

Defined in Control.DeepSeq

Methods

rnf :: (a1, a2, a3, a4, a5) -> () #

(NFData1 f, NFData1 g, NFData a) => NFData (Compose f g a)

Since: deepseq-1.4.3.0

Instance details

Defined in Control.DeepSeq

Methods

rnf :: Compose f g a -> () #

(NFData a1, NFData a2, NFData a3, NFData a4, NFData a5, NFData a6) => NFData (a1, a2, a3, a4, a5, a6) 
Instance details

Defined in Control.DeepSeq

Methods

rnf :: (a1, a2, a3, a4, a5, a6) -> () #

(NFData a1, NFData a2, NFData a3, NFData a4, NFData a5, NFData a6, NFData a7) => NFData (a1, a2, a3, a4, a5, a6, a7) 
Instance details

Defined in Control.DeepSeq

Methods

rnf :: (a1, a2, a3, a4, a5, a6, a7) -> () #

(NFData a1, NFData a2, NFData a3, NFData a4, NFData a5, NFData a6, NFData a7, NFData a8) => NFData (a1, a2, a3, a4, a5, a6, a7, a8) 
Instance details

Defined in Control.DeepSeq

Methods

rnf :: (a1, a2, a3, a4, a5, a6, a7, a8) -> () #

(NFData a1, NFData a2, NFData a3, NFData a4, NFData a5, NFData a6, NFData a7, NFData a8, NFData a9) => NFData (a1, a2, a3, a4, a5, a6, a7, a8, a9) 
Instance details

Defined in Control.DeepSeq

Methods

rnf :: (a1, a2, a3, a4, a5, a6, a7, a8, a9) -> () #

force :: NFData a => a -> a #

a variant of deepseq that is useful in some circumstances:

force x = x `deepseq` x

force x fully evaluates x, and then returns it. Note that force x only performs evaluation when the value of force x itself is demanded, so essentially it turns shallow evaluation into deep evaluation.

force can be conveniently used in combination with ViewPatterns:

{-# LANGUAGE BangPatterns, ViewPatterns #-}
import Control.DeepSeq

someFun :: ComplexData -> SomeResult
someFun (force -> !arg) = {- 'arg' will be fully evaluated -}

Another useful application is to combine force with evaluate in order to force deep evaluation relative to other IO operations:

import Control.Exception (evaluate)
import Control.DeepSeq

main = do
  result <- evaluate $ force $ pureComputation
  {- 'result' will be fully evaluated at this point -}
  return ()

Finally, here's an exception safe variant of the readFile' example:

readFile' :: FilePath -> IO String
readFile' fn = bracket (openFile fn ReadMode) hClose $ \h ->
                       evaluate . force =<< hGetContents h

Since: deepseq-1.2.0.0

($!!) :: NFData a => (a -> b) -> a -> b infixr 0 #

the deep analogue of $!. In the expression f $!! x, x is fully evaluated before the function f is applied to it.

Since: deepseq-1.2.0.0

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 laws:

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

The above laws imply:

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.

(>>) :: 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.

return :: a -> m a #

Inject a value into the monadic type.

fail :: String -> m a #

Fail with a message. This operation is not part of the mathematical definition of a monad, but is invoked on pattern-match failure in a do expression.

As part of the MonadFail proposal (MFP), this function is moved to its own class MonadFail (see Control.Monad.Fail for more details). The definition here will be removed in a future release.

Instances
Monad []

Since: base-2.1

Instance details

Defined in GHC.Base

Methods

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

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

return :: a -> [a] #

fail :: String -> [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 #

fail :: String -> 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 #

fail :: String -> 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 #

fail :: String -> Par1 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 #

fail :: String -> Identity a #

Monad STM

Since: base-4.3.0.0

Instance details

Defined in GHC.Conc.Sync

Methods

(>>=) :: STM a -> (a -> STM b) -> STM b #

(>>) :: STM a -> STM b -> STM b #

return :: a -> STM a #

fail :: String -> STM 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 #

fail :: String -> Down 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 #

fail :: String -> NonEmpty 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 #

fail :: String -> Put a #

Monad Memoized 
Instance details

Defined in UnliftIO.Memoize

Methods

(>>=) :: Memoized a -> (a -> Memoized b) -> Memoized b #

(>>) :: Memoized a -> Memoized b -> Memoized b #

return :: a -> Memoized a #

fail :: String -> Memoized 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 #

fail :: String -> Vector 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 #

fail :: String -> 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 #

fail :: String -> 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) #

fail :: String -> (a, a0) #

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 #

fail :: String -> 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 #

fail :: String -> 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 #

fail :: String -> Proxy a #

Monad (RIO env) 
Instance details

Defined in RIO.Prelude.RIO

Methods

(>>=) :: RIO env a -> (a -> RIO env b) -> RIO env b #

(>>) :: RIO env a -> RIO env b -> RIO env b #

return :: a -> RIO env a #

fail :: String -> RIO env 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 #

fail :: String -> Rec1 f 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 #

fail :: String -> WhenMissing f x 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 #

fail :: String -> ErrorT e m 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 #

fail :: String -> 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 #

fail :: String -> (f :*: g) 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 #

fail :: String -> 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 #

fail :: String -> WhenMissing f k x 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 #

fail :: String -> ReaderT r 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 #

fail :: String -> M1 i c f 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 #

fail :: String -> WhenMatched f k x y a #

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
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 STM

Since: base-4.3.0.0

Instance details

Defined in GHC.Conc.Sync

Methods

mzero :: STM a #

mplus :: STM a -> STM a -> STM a #

MonadPlus Vector 
Instance details

Defined in Data.Vector

Methods

mzero :: Vector a #

mplus :: Vector a -> Vector a -> Vector 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 #

(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 #

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 #

(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 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 #

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 #

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

This generalizes the list-based filter function.

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

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

Like foldM, but discards the result.

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

Repeat an action indefinitely.

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

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.

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.

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

Promote a function to a monad.

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

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

Like replicateM, but discards the result.

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

The reverse of when.

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.

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

The zipWithM function generalizes zipWith to arbitrary applicative functors.

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

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

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

Strict version of <$>.

Since: base-4.8.0.0

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

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

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

Left-to-right composition of Kleisli arrows.

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:

Methods

liftIO :: IO a -> m a #

Lift a computation from the IO monad.

Instances
MonadIO IO

Since: base-4.9.0.0

Instance details

Defined in Control.Monad.IO.Class

Methods

liftIO :: IO a -> IO a #

MonadIO (RIO env) 
Instance details

Defined in RIO.Prelude.RIO

Methods

liftIO :: IO a -> RIO env 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 m => MonadIO (ReaderT r m) 
Instance details

Defined in Control.Monad.Trans.Reader

Methods

liftIO :: IO a -> ReaderT r m a #

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

A class for monads in which exceptions may be thrown.

Instances should obey the following law:

throwM e >> x = throwM e

In other words, throwing an exception short-circuits the rest of the monadic computation.

Methods

throwM :: Exception e => e -> m a #

Throw an exception. Note that this throws when this action is run in the monad m, not when it is applied. It is a generalization of Control.Exception's throwIO.

Should satisfy the law:

throwM e >> f = throwM e
Instances
MonadThrow [] 
Instance details

Defined in Control.Monad.Catch

Methods

throwM :: Exception e => e -> [a] #

MonadThrow Maybe 
Instance details

Defined in Control.Monad.Catch

Methods

throwM :: Exception e => e -> Maybe a #

MonadThrow IO 
Instance details

Defined in Control.Monad.Catch

Methods

throwM :: Exception e => e -> IO a #

MonadThrow Q 
Instance details

Defined in Control.Monad.Catch

Methods

throwM :: Exception e => e -> Q a #

MonadThrow STM 
Instance details

Defined in Control.Monad.Catch

Methods

throwM :: Exception e => e -> STM a #

e ~ SomeException => MonadThrow (Either e) 
Instance details

Defined in Control.Monad.Catch

Methods

throwM :: Exception e0 => e0 -> Either e a #

MonadThrow m => MonadThrow (MaybeT m)

Throws exceptions into the base monad.

Instance details

Defined in Control.Monad.Catch

Methods

throwM :: Exception e => e -> MaybeT m a #

MonadThrow m => MonadThrow (ListT m) 
Instance details

Defined in Control.Monad.Catch

Methods

throwM :: Exception e => e -> ListT m a #

MonadThrow (RIO env) 
Instance details

Defined in RIO.Prelude.RIO

Methods

throwM :: Exception e => e -> RIO env a #

MonadThrow m => MonadThrow (ExceptT e m)

Throws exceptions into the base monad.

Instance details

Defined in Control.Monad.Catch

Methods

throwM :: Exception e0 => e0 -> ExceptT e m a #

MonadThrow m => MonadThrow (IdentityT m) 
Instance details

Defined in Control.Monad.Catch

Methods

throwM :: Exception e => e -> IdentityT m a #

(Error e, MonadThrow m) => MonadThrow (ErrorT e m)

Throws exceptions into the base monad.

Instance details

Defined in Control.Monad.Catch

Methods

throwM :: Exception e0 => e0 -> ErrorT e m a #

MonadThrow m => MonadThrow (StateT s m) 
Instance details

Defined in Control.Monad.Catch

Methods

throwM :: Exception e => e -> StateT s m a #

MonadThrow m => MonadThrow (StateT s m) 
Instance details

Defined in Control.Monad.Catch

Methods

throwM :: Exception e => e -> StateT s m a #

(MonadThrow m, Monoid w) => MonadThrow (WriterT w m) 
Instance details

Defined in Control.Monad.Catch

Methods

throwM :: Exception e => e -> WriterT w m a #

(MonadThrow m, Monoid w) => MonadThrow (WriterT w m) 
Instance details

Defined in Control.Monad.Catch

Methods

throwM :: Exception e => e -> WriterT w m a #

MonadThrow m => MonadThrow (ContT r m) 
Instance details

Defined in Control.Monad.Catch

Methods

throwM :: Exception e => e -> ContT r m a #

MonadThrow m => MonadThrow (ReaderT r m) 
Instance details

Defined in Control.Monad.Catch

Methods

throwM :: Exception e => e -> ReaderT r m a #

(MonadThrow m, Monoid w) => MonadThrow (RWST r w s m) 
Instance details

Defined in Control.Monad.Catch

Methods

throwM :: Exception e => e -> RWST r w s m a #

(MonadThrow m, Monoid w) => MonadThrow (RWST r w s m) 
Instance details

Defined in Control.Monad.Catch

Methods

throwM :: Exception e => e -> RWST r w s m a #

class Monad m => MonadReader r (m :: Type -> Type) | m -> r #

See examples in Control.Monad.Reader. Note, the partially applied function type (->) r is a simple reader monad. See the instance declaration below.

Minimal complete definition

(ask | reader), local

Instances
MonadReader r m => MonadReader r (MaybeT m) 
Instance details

Defined in Control.Monad.Reader.Class

Methods

ask :: MaybeT m r #

local :: (r -> r) -> MaybeT m a -> MaybeT m a #

reader :: (r -> a) -> MaybeT m a #

MonadReader r m => MonadReader r (ListT m) 
Instance details

Defined in Control.Monad.Reader.Class

Methods

ask :: ListT m r #

local :: (r -> r) -> ListT m a -> ListT m a #

reader :: (r -> a) -> ListT m a #

MonadReader env (RIO env) 
Instance details

Defined in RIO.Prelude.RIO

Methods

ask :: RIO env env #

local :: (env -> env) -> RIO env a -> RIO env a #

reader :: (env -> a) -> RIO env a #

(Monoid w, MonadReader r m) => MonadReader r (WriterT w m) 
Instance details

Defined in Control.Monad.Reader.Class

Methods

ask :: WriterT w m r #

local :: (r -> r) -> WriterT w m a -> WriterT w m a #

reader :: (r -> a) -> WriterT w m a #

(Monoid w, MonadReader r m) => MonadReader r (WriterT w m) 
Instance details

Defined in Control.Monad.Reader.Class

Methods

ask :: WriterT w m r #

local :: (r -> r) -> WriterT w m a -> WriterT w m a #

reader :: (r -> a) -> WriterT w m a #

MonadReader r m => MonadReader r (StateT s m) 
Instance details

Defined in Control.Monad.Reader.Class

Methods

ask :: StateT s m r #

local :: (r -> r) -> StateT s m a -> StateT s m a #

reader :: (r -> a) -> StateT s m a #

MonadReader r m => MonadReader r (StateT s m) 
Instance details

Defined in Control.Monad.Reader.Class

Methods

ask :: StateT s m r #

local :: (r -> r) -> StateT s m a -> StateT s m a #

reader :: (r -> a) -> StateT s m a #

MonadReader r m => MonadReader r (IdentityT m) 
Instance details

Defined in Control.Monad.Reader.Class

Methods

ask :: IdentityT m r #

local :: (r -> r) -> IdentityT m a -> IdentityT m a #

reader :: (r -> a) -> IdentityT m a #

MonadReader r m => MonadReader r (ExceptT e m)

Since: mtl-2.2

Instance details

Defined in Control.Monad.Reader.Class

Methods

ask :: ExceptT e m r #

local :: (r -> r) -> ExceptT e m a -> ExceptT e m a #

reader :: (r -> a) -> ExceptT e m a #

(Error e, MonadReader r m) => MonadReader r (ErrorT e m) 
Instance details

Defined in Control.Monad.Reader.Class

Methods

ask :: ErrorT e m r #

local :: (r -> r) -> ErrorT e m a -> ErrorT e m a #

reader :: (r -> a) -> ErrorT e m a #

Monad m => MonadReader r (ReaderT r m) 
Instance details

Defined in Control.Monad.Reader.Class

Methods

ask :: ReaderT r m r #

local :: (r -> r) -> ReaderT r m a -> ReaderT r m a #

reader :: (r -> a) -> ReaderT r m a #

MonadReader r ((->) r :: Type -> Type) 
Instance details

Defined in Control.Monad.Reader.Class

Methods

ask :: r -> r #

local :: (r -> r) -> (r -> a) -> r -> a #

reader :: (r -> a) -> r -> a #

MonadReader r' m => MonadReader r' (ContT r m) 
Instance details

Defined in Control.Monad.Reader.Class

Methods

ask :: ContT r m r' #

local :: (r' -> r') -> ContT r m a -> ContT r m a #

reader :: (r' -> a) -> ContT r m a #

(Monad m, Monoid w) => MonadReader r (RWST r w s m) 
Instance details

Defined in Control.Monad.Reader.Class

Methods

ask :: RWST r w s m r #

local :: (r -> r) -> RWST r w s m a -> RWST r w s m a #

reader :: (r -> a) -> RWST r w s m a #

(Monad m, Monoid w) => MonadReader r (RWST r w s m) 
Instance details

Defined in Control.Monad.Reader.Class

Methods

ask :: RWST r w s m r #

local :: (r -> r) -> RWST r w s m a -> RWST r w s m a #

reader :: (r -> a) -> RWST r w s 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:

Methods

lift :: Monad m => m a -> t m a #

Lift a computation from the argument monad to the constructed monad.

Instances
MonadTrans (ErrorT e) 
Instance details

Defined in Control.Monad.Trans.Error

Methods

lift :: Monad m => m a -> ErrorT e m a #

MonadTrans (ReaderT r :: (Type -> Type) -> Type -> Type) 
Instance details

Defined in Control.Monad.Trans.Reader

Methods

lift :: Monad m => m a -> ReaderT r m a #

type Reader r = ReaderT r Identity #

The parameterizable reader monad.

Computations are functions of a shared environment.

The return function ignores the environment, while >>= passes the inherited environment to both subcomputations.

newtype ReaderT r (m :: k -> Type) (a :: k) :: forall k. Type -> (k -> Type) -> k -> Type #

The reader monad transformer, which adds a read-only environment to the given monad.

The return function ignores the environment, while >>= passes the inherited environment to both subcomputations.

Constructors

ReaderT 

Fields

Instances
Monad m => MonadReader r (ReaderT r m) 
Instance details

Defined in Control.Monad.Reader.Class

Methods

ask :: ReaderT r m r #

local :: (r -> r) -> ReaderT r m a -> ReaderT r m a #

reader :: (r -> a) -> ReaderT r m a #

MonadTrans (ReaderT r :: (Type -> Type) -> Type -> Type) 
Instance details

Defined in Control.Monad.Trans.Reader

Methods

lift :: Monad m => m a -> ReaderT r 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 #

fail :: String -> ReaderT r 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 #

MonadFix m => MonadFix (ReaderT r m) 
Instance details

Defined in Control.Monad.Trans.Reader

Methods

mfix :: (a -> ReaderT r m a) -> ReaderT r m a #

MonadFail m => MonadFail (ReaderT r m) 
Instance details

Defined in Control.Monad.Trans.Reader

Methods

fail :: String -> ReaderT r 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 #

Contravariant m => Contravariant (ReaderT r m) 
Instance details

Defined in Control.Monad.Trans.Reader

Methods

contramap :: (a -> b) -> ReaderT r m b -> ReaderT r m a #

(>$) :: b -> ReaderT r m b -> ReaderT r m a #

MonadZip m => MonadZip (ReaderT r m) 
Instance details

Defined in Control.Monad.Trans.Reader

Methods

mzip :: ReaderT r m a -> ReaderT r m b -> ReaderT r m (a, b) #

mzipWith :: (a -> b -> c) -> ReaderT r m a -> ReaderT r m b -> ReaderT r m c #

munzip :: ReaderT r m (a, b) -> (ReaderT r m a, ReaderT r m b) #

MonadIO m => MonadIO (ReaderT r m) 
Instance details

Defined in Control.Monad.Trans.Reader

Methods

liftIO :: IO a -> ReaderT r m a #

Alternative m => Alternative (ReaderT r m) 
Instance details

Defined in Control.Monad.Trans.Reader

Methods

empty :: ReaderT r m a #

(<|>) :: ReaderT r m a -> ReaderT r m a -> ReaderT r m a #

some :: ReaderT r m a -> ReaderT r m [a] #

many :: ReaderT r m a -> ReaderT r 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 #

MonadThrow m => MonadThrow (ReaderT r m) 
Instance details

Defined in Control.Monad.Catch

Methods

throwM :: Exception e => e -> ReaderT r m a #

MonadCatch m => MonadCatch (ReaderT r m) 
Instance details

Defined in Control.Monad.Catch

Methods

catch :: Exception e => ReaderT r m a -> (e -> ReaderT r m a) -> ReaderT r m a #

MonadMask m => MonadMask (ReaderT r m) 
Instance details

Defined in Control.Monad.Catch

Methods

mask :: ((forall a. ReaderT r m a -> ReaderT r m a) -> ReaderT r m b) -> ReaderT r m b #

uninterruptibleMask :: ((forall a. ReaderT r m a -> ReaderT r m a) -> ReaderT r m b) -> ReaderT r m b #

generalBracket :: ReaderT r m a -> (a -> ExitCase b -> ReaderT r m c) -> (a -> ReaderT r m b) -> ReaderT r m (b, c) #

PrimMonad m => PrimMonad (ReaderT r m) 
Instance details

Defined in Control.Monad.Primitive

Associated Types

type PrimState (ReaderT r m) :: Type #

Methods

primitive :: (State# (PrimState (ReaderT r m)) -> (#State# (PrimState (ReaderT r m)), a#)) -> ReaderT r m a #

MonadUnliftIO m => MonadUnliftIO (ReaderT r m) 
Instance details

Defined in Control.Monad.IO.Unlift

Methods

askUnliftIO :: ReaderT r m (UnliftIO (ReaderT r m)) #

withRunInIO :: ((forall a. ReaderT r m a -> IO a) -> IO b) -> ReaderT r m b #

type PrimState (ReaderT r m) 
Instance details

Defined in Control.Monad.Primitive

type PrimState (ReaderT r m) = PrimState m

ask :: MonadReader r m => m r #

Retrieves the monad environment.

asks #

Arguments

:: MonadReader r m 
=> (r -> a)

The selector function to apply to the environment.

-> m a 

Retrieves a function of the current environment.

local #

Arguments

:: MonadReader r m 
=> (r -> r)

The function to modify the environment.

-> m a

Reader to run in the modified environment.

-> m a 

Executes a computation in a modified environment.

runReader #

Arguments

:: Reader r a

A Reader to run.

-> r

An initial environment.

-> a 

Runs a Reader and extracts the final value from it. (The inverse of reader.)

data Bool #

Constructors

False 
True 
Instances
Bounded Bool

Since: base-2.1

Instance details

Defined in GHC.Enum

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 #

Data Bool

Since: base-4.0.0.0

Instance details

Defined in Data.Data

Methods

gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> Bool -> c Bool #

gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c Bool #

toConstr :: Bool -> Constr #

dataTypeOf :: Bool -> DataType #

dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c Bool) #

dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c Bool) #

gmapT :: (forall b. Data b => b -> b) -> Bool -> Bool #

gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> Bool -> r #

gmapQr :: (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> Bool -> r #

gmapQ :: (forall d. Data d => d -> u) -> Bool -> [u] #

gmapQi :: Int -> (forall d. Data d => d -> u) -> Bool -> u #

gmapM :: Monad m => (forall d. Data d => d -> m d) -> Bool -> m Bool #

gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> Bool -> m Bool #

gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> Bool -> m 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

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 
Instance details

Defined in GHC.Generics

Associated Types

type Rep Bool :: Type -> Type #

Methods

from :: Bool -> Rep Bool x #

to :: Rep Bool x -> Bool #

SingKind Bool

Since: base-4.9.0.0

Instance details

Defined in GHC.Generics

Associated Types

type DemoteRep Bool :: Type

Methods

fromSing :: Sing a -> DemoteRep 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 () #

NFData Bool 
Instance details

Defined in Control.DeepSeq

Methods

rnf :: Bool -> () #

Hashable Bool 
Instance details

Defined in Data.Hashable.Class

Methods

hashWithSalt :: Int -> Bool -> Int #

hash :: Bool -> Int #

Unbox Bool 
Instance details

Defined in Data.Vector.Unboxed.Base

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

Vector Vector Bool 
Instance details

Defined in Data.Vector.Unboxed.Base

MVector MVector Bool 
Instance details

Defined in Data.Vector.Unboxed.Base

type Rep Bool

Since: base-4.6.0.0

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))
data Sing (a :: Bool) 
Instance details

Defined in GHC.Generics

data Sing (a :: Bool) where
type DemoteRep Bool 
Instance details

Defined in GHC.Generics

type DemoteRep Bool = Bool
newtype Vector Bool 
Instance details

Defined in Data.Vector.Unboxed.Base

newtype MVector s Bool 
Instance details

Defined in Data.Vector.Unboxed.Base

newtype MVector s Bool = MV_Bool (MVector s Word8)

bool :: a -> a -> Bool -> a #

Case analysis for the Bool type. bool x y p evaluates to x when p is False, and evaluates to y when p is True.

This is equivalent to if p then y else x; that is, one can think of it as an if-then-else construct with its arguments reordered.

Examples

Expand

Basic usage:

>>> bool "foo" "bar" True
"bar"
>>> bool "foo" "bar" False
"foo"

Confirm that bool x y p and if p then y else x are equivalent:

>>> let p = True; x = "bar"; y = "foo"
>>> bool x y p == if p then y else x
True
>>> let p = False
>>> bool x y p == if p then y else x
True

Since: base-4.7.0.0

not :: Bool -> Bool #

Boolean "not"

otherwise :: Bool #

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

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

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

Boolean "and"

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

Boolean "or"

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
Eq ByteString 
Instance details

Defined in Data.ByteString.Internal

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 :: (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

Read ByteString 
Instance details

Defined in Data.ByteString.Internal

Show ByteString 
Instance details

Defined in Data.ByteString.Internal

IsString ByteString 
Instance details

Defined in Data.ByteString.Internal

Semigroup ByteString 
Instance details

Defined in Data.ByteString.Internal

Monoid ByteString 
Instance details

Defined in Data.ByteString.Internal

NFData ByteString 
Instance details

Defined in Data.ByteString.Internal

Methods

rnf :: ByteString -> () #

Hashable ByteString 
Instance details

Defined in Data.Hashable.Class

data Builder #

Builders denote sequences of bytes. They are Monoids where mempty is the zero-length sequence and mappend is concatenation, which runs in O(1).

data ShortByteString #

A compact representation of a Word8 vector.

It has a lower memory overhead than a ByteString and and does not contribute to heap fragmentation. It can be converted to or from a ByteString (at the cost of copying the string data). It supports very few other operations.

It is suitable for use as an internal representation for code that needs to keep many short strings in memory, but it should not be used as an interchange type. That is, it should not generally be used in public APIs. The ByteString type is usually more suitable for use in interfaces; it is more flexible and it supports a wide range of operations.

Instances
Eq ShortByteString 
Instance details

Defined in Data.ByteString.Short.Internal

Data ShortByteString 
Instance details

Defined in Data.ByteString.Short.Internal

Methods

gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> ShortByteString -> c ShortByteString #

gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c ShortByteString #

toConstr :: ShortByteString -> Constr #

dataTypeOf :: ShortByteString -> DataType #

dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c ShortByteString) #

dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c ShortByteString) #

gmapT :: (forall b. Data b => b -> b) -> ShortByteString -> ShortByteString #

gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> ShortByteString -> r #

gmapQr :: (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> ShortByteString -> r #

gmapQ :: (forall d. Data d => d -> u) -> ShortByteString -> [u] #

gmapQi :: Int -> (forall d. Data d => d -> u) -> ShortByteString -> u #

gmapM :: Monad m => (forall d. Data d => d -> m d) -> ShortByteString -> m ShortByteString #

gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> ShortByteString -> m ShortByteString #

gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> ShortByteString -> m ShortByteString #

Ord ShortByteString 
Instance details

Defined in Data.ByteString.Short.Internal

Read ShortByteString 
Instance details

Defined in Data.ByteString.Short.Internal

Show ShortByteString 
Instance details

Defined in Data.ByteString.Short.Internal

IsString ShortByteString 
Instance details

Defined in Data.ByteString.Short.Internal

Semigroup ShortByteString 
Instance details

Defined in Data.ByteString.Short.Internal

Monoid ShortByteString 
Instance details

Defined in Data.ByteString.Short.Internal

NFData ShortByteString 
Instance details

Defined in Data.ByteString.Short.Internal

Methods

rnf :: ShortByteString -> () #

Hashable ShortByteString 
Instance details

Defined in Data.Hashable.Class

toShort :: ByteString -> ShortByteString #

O(n). Convert a ByteString into a ShortByteString.

This makes a copy, so does not retain the input string.

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
Bounded Char

Since: base-2.1

Instance details

Defined in GHC.Enum

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 #

Data Char

Since: base-4.0.0.0

Instance details

Defined in Data.Data

Methods

gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> Char -> c Char #

gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c Char #

toConstr :: Char -> Constr #

dataTypeOf :: Char -> DataType #

dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c Char) #

dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c Char) #

gmapT :: (forall b. Data b => b -> b) -> Char -> Char #

gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> Char -> r #

gmapQr :: (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> Char -> r #

gmapQ :: (forall d. Data d => d -> u) -> Char -> [u] #

gmapQi :: Int -> (forall d. Data d => d -> u) -> Char -> u #

gmapM :: Monad m => (forall d. Data d => d -> m d) -> Char -> m Char #

gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> Char -> m Char #

gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> Char -> m Char #

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

Show Char

Since: base-2.1

Instance details

Defined in GHC.Show

Methods

showsPrec :: Int -> Char -> ShowS #

show :: Char -> String #

showList :: [Char] -> ShowS #

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 () #

NFData Char 
Instance details

Defined in Control.DeepSeq

Methods

rnf :: Char -> () #

Hashable Char 
Instance details

Defined in Data.Hashable.Class

Methods

hashWithSalt :: Int -> Char -> Int #

hash :: Char -> Int #

Display Char

Since: rio-0.1.0.0

Instance details

Defined in RIO.Prelude.Display

Unbox Char 
Instance details

Defined in Data.Vector.Unboxed.Base

ErrorList Char 
Instance details

Defined in Control.Monad.Trans.Error

Methods

listMsg :: String -> [Char] #

Vector Vector Char 
Instance details

Defined in Data.Vector.Unboxed.Base

MVector MVector Char 
Instance details

Defined in Data.Vector.Unboxed.Base

Generic1 (URec Char :: k -> Type) 
Instance details

Defined in GHC.Generics

Associated Types

type Rep1 (URec Char) :: k -> Type #

Methods

from1 :: URec Char a -> Rep1 (URec Char) a #

to1 :: Rep1 (URec Char) a -> URec Char 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 #

Foldable (URec Char :: Type -> Type)

Since: base-4.9.0.0

Instance details

Defined in Data.Foldable

Methods

fold :: Monoid m => URec Char m -> m #

foldMap :: Monoid m => (a -> m) -> URec Char a -> m #

foldr :: (a -> b -> b) -> b -> URec Char a -> b #

foldr' :: (a -> b -> b) -> b -> URec Char a -> b #

foldl :: (b -> a -> b) -> b -> URec Char a -> b #

foldl' :: (b -> a -> b) -> b -> URec Char a -> b #

foldr1 :: (a -> a -> a) -> URec Char a -> a #

foldl1 :: (a -> a -> a) -> URec Char a -> a #

toList :: URec Char a -> [a] #

null :: URec Char a -> Bool #

length :: URec Char a -> Int #

elem :: Eq a => a -> URec Char a -> Bool #

maximum :: Ord a => URec Char a -> a #

minimum :: Ord a => URec Char a -> a #

sum :: Num a => URec Char a -> a #

product :: Num a => URec Char a -> a #

Traversable (URec Char :: Type -> Type)

Since: base-4.9.0.0

Instance details

Defined in Data.Traversable

Methods

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

sequenceA :: Applicative f => URec Char (f a) -> f (URec Char a) #

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

sequence :: Monad m => URec Char (m a) -> m (URec Char a) #

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) 
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 #

newtype Vector Char 
Instance details

Defined in Data.Vector.Unboxed.Base

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 {}
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)

Since: base-4.9.0.0

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)

Since: base-4.9.0.0

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)))

class Typeable a => Data a where #

The Data class comprehends a fundamental primitive gfoldl for folding over constructor applications, say terms. This primitive can be instantiated in several ways to map over the immediate subterms of a term; see the gmap combinators later in this class. Indeed, a generic programmer does not necessarily need to use the ingenious gfoldl primitive but rather the intuitive gmap combinators. The gfoldl primitive is completed by means to query top-level constructors, to turn constructor representations into proper terms, and to list all possible datatype constructors. This completion allows us to serve generic programming scenarios like read, show, equality, term generation.

The combinators gmapT, gmapQ, gmapM, etc are all provided with default definitions in terms of gfoldl, leaving open the opportunity to provide datatype-specific definitions. (The inclusion of the gmap combinators as members of class Data allows the programmer or the compiler to derive specialised, and maybe more efficient code per datatype. Note: gfoldl is more higher-order than the gmap combinators. This is subject to ongoing benchmarking experiments. It might turn out that the gmap combinators will be moved out of the class Data.)

Conceptually, the definition of the gmap combinators in terms of the primitive gfoldl requires the identification of the gfoldl function arguments. Technically, we also need to identify the type constructor c for the construction of the result type from the folded term type.

In the definition of gmapQx combinators, we use phantom type constructors for the c in the type of gfoldl because the result type of a query does not involve the (polymorphic) type of the term argument. In the definition of gmapQl we simply use the plain constant type constructor because gfoldl is left-associative anyway and so it is readily suited to fold a left-associative binary operation over the immediate subterms. In the definition of gmapQr, extra effort is needed. We use a higher-order accumulation trick to mediate between left-associative constructor application vs. right-associative binary operation (e.g., (:)). When the query is meant to compute a value of type r, then the result type withing generic folding is r -> r. So the result of folding is a function to which we finally pass the right unit.

With the -XDeriveDataTypeable option, GHC can generate instances of the Data class automatically. For example, given the declaration

data T a b = C1 a b | C2 deriving (Typeable, Data)

GHC will generate an instance that is equivalent to

instance (Data a, Data b) => Data (T a b) where
    gfoldl k z (C1 a b) = z C1 `k` a `k` b
    gfoldl k z C2       = z C2

    gunfold k z c = case constrIndex c of
                        1 -> k (k (z C1))
                        2 -> z C2

    toConstr (C1 _ _) = con_C1
    toConstr C2       = con_C2

    dataTypeOf _ = ty_T

con_C1 = mkConstr ty_T "C1" [] Prefix
con_C2 = mkConstr ty_T "C2" [] Prefix
ty_T   = mkDataType "Module.T" [con_C1, con_C2]

This is suitable for datatypes that are exported transparently.

Minimal complete definition

gunfold, toConstr, dataTypeOf

Methods

gfoldl #

Arguments

:: (forall d b. Data d => c (d -> b) -> d -> c b)

defines how nonempty constructor applications are folded. It takes the folded tail of the constructor application and its head, i.e., an immediate subterm, and combines them in some way.

-> (forall g. g -> c g)

defines how the empty constructor application is folded, like the neutral / start element for list folding.

-> a

structure to be folded.

-> c a

result, with a type defined in terms of a, but variability is achieved by means of type constructor c for the construction of the actual result type.

Left-associative fold operation for constructor applications.

The type of gfoldl is a headache, but operationally it is a simple generalisation of a list fold.

The default definition for gfoldl is const id, which is suitable for abstract datatypes with no substructures.

gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c a #

Unfolding constructor applications

toConstr :: a -> Constr #

Obtaining the constructor from a given datum. For proper terms, this is meant to be the top-level constructor. Primitive datatypes are here viewed as potentially infinite sets of values (i.e., constructors).

dataTypeOf :: a -> DataType #

The outer type constructor of the type

dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c a) #

Mediate types and unary type constructors.

In Data instances of the form

    instance (Data a, ...) => Data (T a)

dataCast1 should be defined as gcast1.

The default definition is const Nothing, which is appropriate for instances of other forms.

dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c a) #

Mediate types and binary type constructors.

In Data instances of the form

    instance (Data a, Data b, ...) => Data (T a b)

dataCast2 should be defined as gcast2.

The default definition is const Nothing, which is appropriate for instances of other forms.

gmapT :: (forall b. Data b => b -> b) -> a -> a #

A generic transformation that maps over the immediate subterms

The default definition instantiates the type constructor c in the type of gfoldl to an identity datatype constructor, using the isomorphism pair as injection and projection.

gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> a -> r #

A generic query with a left-associative binary operator

gmapQr :: (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> a -> r #

A generic query with a right-associative binary operator

gmapQ :: (forall d. Data d => d -> u) -> a -> [u] #

A generic query that processes the immediate subterms and returns a list of results. The list is given in the same order as originally specified in the declaration of the data constructors.

gmapQi :: Int -> (forall d. Data d => d -> u) -> a -> u #

A generic query that processes one child by index (zero-based)

gmapM :: Monad m => (forall d. Data d => d -> m d) -> a -> m a #

A generic monadic transformation that maps over the immediate subterms

The default definition instantiates the type constructor c in the type of gfoldl to the monad datatype constructor, defining injection and projection using return and >>=.

gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> a -> m a #

Transformation of at least one immediate subterm does not fail

gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> a -> m a #

Transformation of one immediate subterm with success

Instances
Data Bool

Since: base-4.0.0.0

Instance details

Defined in Data.Data

Methods

gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> Bool -> c Bool #

gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c Bool #

toConstr :: Bool -> Constr #

dataTypeOf :: Bool -> DataType #

dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c Bool) #

dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c Bool) #

gmapT :: (forall b. Data b => b -> b) -> Bool -> Bool #

gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> Bool -> r #

gmapQr :: (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> Bool -> r #

gmapQ :: (forall d. Data d => d -> u) -> Bool -> [u] #

gmapQi :: Int -> (forall d. Data d => d -> u) -> Bool -> u #

gmapM :: Monad m => (forall d. Data d => d -> m d) -> Bool -> m Bool #

gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> Bool -> m Bool #

gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> Bool -> m Bool #

Data Char

Since: base-4.0.0.0

Instance details

Defined in Data.Data

Methods

gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> Char -> c Char #

gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c Char #

toConstr :: Char -> Constr #

dataTypeOf :: Char -> DataType #

dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c Char) #

dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c Char) #

gmapT :: (forall b. Data b => b -> b) -> Char -> Char #

gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> Char -> r #

gmapQr :: (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> Char -> r #

gmapQ :: (forall d. Data d => d -> u) -> Char -> [u] #

gmapQi :: Int -> (forall d. Data d => d -> u) -> Char -> u #

gmapM :: Monad m => (forall d. Data d => d -> m d) -> Char -> m Char #

gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> Char -> m Char #

gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> Char -> m Char #

Data Double

Since: base-4.0.0.0

Instance details

Defined in Data.Data

Methods

gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> Double -> c Double #

gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c Double #

toConstr :: Double -> Constr #

dataTypeOf :: Double -> DataType #

dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c Double) #

dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c Double) #

gmapT :: (forall b. Data b => b -> b) -> Double -> Double #

gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> Double -> r #

gmapQr :: (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> Double -> r #

gmapQ :: (forall d. Data d => d -> u) -> Double -> [u] #

gmapQi :: Int -> (forall d. Data d => d -> u) -> Double -> u #

gmapM :: Monad m => (forall d. Data d => d -> m d) -> Double -> m Double #

gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> Double -> m Double #

gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> Double -> m Double #

Data Float

Since: base-4.0.0.0

Instance details

Defined in Data.Data

Methods

gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> Float -> c Float #

gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c Float #

toConstr :: Float -> Constr #

dataTypeOf :: Float -> DataType #

dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c Float) #

dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c Float) #

gmapT :: (forall b. Data b => b -> b) -> Float -> Float #

gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> Float -> r #

gmapQr :: (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> Float -> r #

gmapQ :: (forall d. Data d => d -> u) -> Float -> [u] #

gmapQi :: Int -> (forall d. Data d => d -> u) -> Float -> u #

gmapM :: Monad m => (forall d. Data d => d -> m d) -> Float -> m Float #

gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> Float -> m Float #

gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> Float -> m Float #

Data Int

Since: base-4.0.0.0

Instance details

Defined in Data.Data

Methods

gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> Int -> c Int #

gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c Int #

toConstr :: Int -> Constr #

dataTypeOf :: Int -> DataType #

dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c Int) #

dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c Int) #

gmapT :: (forall b. Data b => b -> b) -> Int -> Int #

gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> Int -> r #

gmapQr :: (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> Int -> r #

gmapQ :: (forall d. Data d => d -> u) -> Int -> [u] #

gmapQi :: Int -> (forall d. Data d => d -> u) -> Int -> u #

gmapM :: Monad m => (forall d. Data d => d -> m d) -> Int -> m Int #

gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> Int -> m Int #

gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> Int -> m Int #

Data Int8

Since: base-4.0.0.0

Instance details

Defined in Data.Data

Methods

gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> Int8 -> c Int8 #

gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c Int8 #

toConstr :: Int8 -> Constr #

dataTypeOf :: Int8 -> DataType #

dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c Int8) #

dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c Int8) #

gmapT :: (forall b. Data b => b -> b) -> Int8 -> Int8 #

gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> Int8 -> r #

gmapQr :: (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> Int8 -> r #

gmapQ :: (forall d. Data d => d -> u) -> Int8 -> [u] #

gmapQi :: Int -> (forall d. Data d => d -> u) -> Int8 -> u #

gmapM :: Monad m => (forall d. Data d => d -> m d) -> Int8 -> m Int8 #

gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> Int8 -> m Int8 #

gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> Int8 -> m Int8 #

Data Int16

Since: base-4.0.0.0

Instance details

Defined in Data.Data

Methods

gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> Int16 -> c Int16 #

gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c Int16 #

toConstr :: Int16 -> Constr #

dataTypeOf :: Int16 -> DataType #

dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c Int16) #

dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c Int16) #

gmapT :: (forall b. Data b => b -> b) -> Int16 -> Int16 #

gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> Int16 -> r #

gmapQr :: (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> Int16 -> r #

gmapQ :: (forall d. Data d => d -> u) -> Int16 -> [u] #

gmapQi :: Int -> (forall d. Data d => d -> u) -> Int16 -> u #

gmapM :: Monad m => (forall d. Data d => d -> m d) -> Int16 -> m Int16 #

gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> Int16 -> m Int16 #

gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> Int16 -> m Int16 #

Data Int32

Since: base-4.0.0.0

Instance details

Defined in Data.Data

Methods

gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> Int32 -> c Int32 #

gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c Int32 #

toConstr :: Int32 -> Constr #

dataTypeOf :: Int32 -> DataType #

dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c Int32) #

dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c Int32) #

gmapT :: (forall b. Data b => b -> b) -> Int32 -> Int32 #

gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> Int32 -> r #

gmapQr :: (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> Int32 -> r #

gmapQ :: (forall d. Data d => d -> u) -> Int32 -> [u] #

gmapQi :: Int -> (forall d. Data d => d -> u) -> Int32 -> u #

gmapM :: Monad m => (forall d. Data d => d -> m d) -> Int32 -> m Int32 #

gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> Int32 -> m Int32 #

gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> Int32 -> m Int32 #

Data Int64

Since: base-4.0.0.0

Instance details

Defined in Data.Data

Methods

gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> Int64 -> c Int64 #

gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c Int64 #

toConstr :: Int64 -> Constr #

dataTypeOf :: Int64 -> DataType #

dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c Int64) #

dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c Int64) #

gmapT :: (forall b. Data b => b -> b) -> Int64 -> Int64 #

gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> Int64 -> r #

gmapQr :: (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> Int64 -> r #

gmapQ :: (forall d. Data d => d -> u) -> Int64 -> [u] #

gmapQi :: Int -> (forall d. Data d => d -> u) -> Int64 -> u #

gmapM :: Monad m => (forall d. Data d => d -> m d) -> Int64 -> m Int64 #

gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> Int64 -> m Int64 #

gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> Int64 -> m Int64 #

Data Integer

Since: base-4.0.0.0

Instance details

Defined in Data.Data

Methods

gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> Integer -> c Integer #

gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c Integer #

toConstr :: Integer -> Constr #

dataTypeOf :: Integer -> DataType #

dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c Integer) #

dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c Integer) #

gmapT :: (forall b. Data b => b -> b) -> Integer -> Integer #

gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> Integer -> r #

gmapQr :: (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> Integer -> r #

gmapQ :: (forall d. Data d => d -> u) -> Integer -> [u] #

gmapQi :: Int -> (forall d. Data d => d -> u) -> Integer -> u #

gmapM :: Monad m => (forall d. Data d => d -> m d) -> Integer -> m Integer #

gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> Integer -> m Integer #

gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> Integer -> m Integer #

Data Natural

Since: base-4.8.0.0

Instance details

Defined in Data.Data

Methods

gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> Natural -> c Natural #

gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c Natural #

toConstr :: Natural -> Constr #

dataTypeOf :: Natural -> DataType #

dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c Natural) #

dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c Natural) #

gmapT :: (forall b. Data b => b -> b) -> Natural -> Natural #

gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> Natural -> r #

gmapQr :: (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> Natural -> r #

gmapQ :: (forall d. Data d => d -> u) -> Natural -> [u] #

gmapQi :: Int -> (forall d. Data d => d -> u) -> Natural -> u #

gmapM :: Monad m => (forall d. Data d => d -> m d) -> Natural -> m Natural #

gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> Natural -> m Natural #

gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> Natural -> m Natural #

Data Ordering

Since: base-4.0.0.0

Instance details

Defined in Data.Data

Methods

gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> Ordering -> c Ordering #

gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c Ordering #

toConstr :: Ordering -> Constr #

dataTypeOf :: Ordering -> DataType #

dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c Ordering) #

dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c Ordering) #

gmapT :: (forall b. Data b => b -> b) -> Ordering -> Ordering #

gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> Ordering -> r #

gmapQr :: (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> Ordering -> r #

gmapQ :: (forall d. Data d => d -> u) -> Ordering -> [u] #

gmapQi :: Int -> (forall d. Data d => d -> u) -> Ordering -> u #

gmapM :: Monad m => (forall d. Data d => d -> m d) -> Ordering -> m Ordering #

gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> Ordering -> m Ordering #

gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> Ordering -> m Ordering #

Data Word

Since: base-4.0.0.0

Instance details

Defined in Data.Data

Methods

gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> Word -> c Word #

gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c Word #

toConstr :: Word -> Constr #

dataTypeOf :: Word -> DataType #

dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c Word) #

dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c Word) #

gmapT :: (forall b. Data b => b -> b) -> Word -> Word #

gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> Word -> r #

gmapQr :: (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> Word -> r #

gmapQ :: (forall d. Data d => d -> u) -> Word -> [u] #

gmapQi :: Int -> (forall d. Data d => d -> u) -> Word -> u #

gmapM :: Monad m => (forall d. Data d => d -> m d) -> Word -> m Word #

gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> Word -> m Word #

gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> Word -> m Word #

Data Word8

Since: base-4.0.0.0

Instance details

Defined in Data.Data

Methods

gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> Word8 -> c Word8 #

gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c Word8 #

toConstr :: Word8 -> Constr #

dataTypeOf :: Word8 -> DataType #

dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c Word8) #

dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c Word8) #

gmapT :: (forall b. Data b => b -> b) -> Word8 -> Word8 #

gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> Word8 -> r #

gmapQr :: (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> Word8 -> r #

gmapQ :: (forall d. Data d => d -> u) -> Word8 -> [u] #

gmapQi :: Int -> (forall d. Data d => d -> u) -> Word8 -> u #

gmapM :: Monad m => (forall d. Data d => d -> m d) -> Word8 -> m Word8 #

gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> Word8 -> m Word8 #

gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> Word8 -> m Word8 #

Data Word16

Since: base-4.0.0.0

Instance details

Defined in Data.Data

Methods

gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> Word16 -> c Word16 #

gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c Word16 #

toConstr :: Word16 -> Constr #

dataTypeOf :: Word16 -> DataType #

dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c Word16) #

dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c Word16) #

gmapT :: (forall b. Data b => b -> b) -> Word16 -> Word16 #

gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> Word16 -> r #

gmapQr :: (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> Word16 -> r #

gmapQ :: (forall d. Data d => d -> u) -> Word16 -> [u] #

gmapQi :: Int -> (forall d. Data d => d -> u) -> Word16 -> u #

gmapM :: Monad m => (forall d. Data d => d -> m d) -> Word16 -> m Word16 #

gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> Word16 -> m Word16 #

gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> Word16 -> m Word16 #

Data Word32

Since: base-4.0.0.0

Instance details

Defined in Data.Data

Methods

gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> Word32 -> c Word32 #

gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c Word32 #

toConstr :: Word32 -> Constr #

dataTypeOf :: Word32 -> DataType #

dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c Word32) #

dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c Word32) #

gmapT :: (forall b. Data b => b -> b) -> Word32 -> Word32 #

gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> Word32 -> r #

gmapQr :: (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> Word32 -> r #

gmapQ :: (forall d. Data d => d -> u) -> Word32 -> [u] #

gmapQi :: Int -> (forall d. Data d => d -> u) -> Word32 -> u #

gmapM :: Monad m => (forall d. Data d => d -> m d) -> Word32 -> m Word32 #

gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> Word32 -> m Word32 #

gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> Word32 -> m Word32 #

Data Word64

Since: base-4.0.0.0

Instance details

Defined in Data.Data

Methods

gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> Word64 -> c Word64 #

gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c Word64 #

toConstr :: Word64 -> Constr #

dataTypeOf :: Word64 -> DataType #

dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c Word64) #

dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c Word64) #

gmapT :: (forall b. Data b => b -> b) -> Word64 -> Word64 #

gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> Word64 -> r #

gmapQr :: (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> Word64 -> r #

gmapQ :: (forall d. Data d => d -> u) -> Word64 -> [u] #

gmapQi :: Int -> (forall d. Data d => d -> u) -> Word64 -> u #

gmapM :: Monad m => (forall d. Data d => d -> m d) -> Word64 -> m Word64 #

gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> Word64 -> m Word64 #

gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> Word64 -> m Word64 #

Data ()

Since: base-4.0.0.0

Instance details

Defined in Data.Data

Methods

gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> () -> c () #

gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c () #

toConstr :: () -> Constr #

dataTypeOf :: () -> DataType #

dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c ()) #

dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c ()) #

gmapT :: (forall b. Data b => b -> b) -> () -> () #

gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> () -> r #

gmapQr :: (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> () -> r #

gmapQ :: (forall d. Data d => d -> u) -> () -> [u] #

gmapQi :: Int -> (forall d. Data d => d -> u) -> () -> u #

gmapM :: Monad m => (forall d. Data d => d -> m d) -> () -> m () #

gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> () -> m () #

gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> () -> m () #

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 :: (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 #

Data Version

Since: base-4.7.0.0

Instance details

Defined in Data.Data

Methods

gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> Version -> c Version #

gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c Version #

toConstr :: Version -> Constr #

dataTypeOf :: Version -> DataType #

dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c Version) #

dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c Version) #

gmapT :: (forall b. Data b => b -> b) -> Version -> Version #

gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> Version -> r #

gmapQr :: (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> Version -> r #

gmapQ :: (forall d. Data d => d -> u) -> Version -> [u] #

gmapQi :: Int -> (forall d. Data d => d -> u) -> Version -> u #

gmapM :: Monad m => (forall d. Data d => d -> m d) -> Version -> m Version #

gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> Version -> m Version #

gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> Version -> m Version #

Data All

Since: base-4.8.0.0

Instance details

Defined in Data.Data

Methods

gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> All -> c All #

gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c All #

toConstr :: All -> Constr #

dataTypeOf :: All -> DataType #

dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c All) #

dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c All) #

gmapT :: (forall b. Data b => b -> b) -> All -> All #

gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> All -> r #

gmapQr :: (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> All -> r #

gmapQ :: (forall d. Data d => d -> u) -> All -> [u] #

gmapQi :: Int -> (forall d. Data d => d -> u) -> All -> u #

gmapM :: Monad m => (forall d. Data d => d -> m d) -> All -> m All #

gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> All -> m All #

gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> All -> m All #

Data Any

Since: base-4.8.0.0

Instance details

Defined in Data.Data

Methods

gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> Any -> c Any #

gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c Any #

toConstr :: Any -> Constr #

dataTypeOf :: Any -> DataType #

dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c Any) #

dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c Any) #

gmapT :: (forall b. Data b => b -> b) -> Any -> Any #

gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> Any -> r #

gmapQr :: (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> Any -> r #

gmapQ :: (forall d. Data d => d -> u) -> Any -> [u] #

gmapQi :: Int -> (forall d. Data d => d -> u) -> Any -> u #

gmapM :: Monad m => (forall d. Data d => d -> m d) -> Any -> m Any #

gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> Any -> m Any #

gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> Any -> m Any #

Data Fixity

Since: base-4.9.0.0

Instance details

Defined in Data.Data

Methods

gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> Fixity -> c Fixity #

gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c Fixity #

toConstr :: Fixity -> Constr #

dataTypeOf :: Fixity -> DataType #

dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c Fixity) #

dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c Fixity) #

gmapT :: (forall b. Data b => b -> b) -> Fixity -> Fixity #

gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> Fixity -> r #

gmapQr :: (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> Fixity -> r #

gmapQ :: (forall d. Data d => d -> u) -> Fixity -> [u] #

gmapQi :: Int -> (forall d. Data d => d -> u) -> Fixity -> u #

gmapM :: Monad m => (forall d. Data d => d -> m d) -> Fixity -> m Fixity #

gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> Fixity -> m Fixity #

gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> Fixity -> m Fixity #

Data Associativity

Since: base-4.9.0.0

Instance details

Defined in Data.Data

Methods

gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> Associativity -> c Associativity #

gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c Associativity #

toConstr :: Associativity -> Constr #

dataTypeOf :: Associativity -> DataType #

dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c Associativity) #

dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c Associativity) #

gmapT :: (forall b. Data b => b -> b) -> Associativity -> Associativity #

gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> Associativity -> r #

gmapQr :: (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> Associativity -> r #

gmapQ :: (forall d. Data d => d -> u) -> Associativity -> [u] #

gmapQi :: Int -> (forall d. Data d => d -> u) -> Associativity -> u #

gmapM :: Monad m => (forall d. Data d => d -> m d) -> Associativity -> m Associativity #

gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> Associativity -> m Associativity #

gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> Associativity -> m Associativity #

Data SourceUnpackedness

Since: base-4.9.0.0

Instance details

Defined in Data.Data

Methods

gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> SourceUnpackedness -> c SourceUnpackedness #

gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c SourceUnpackedness #

toConstr :: SourceUnpackedness -> Constr #

dataTypeOf :: SourceUnpackedness -> DataType #

dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c SourceUnpackedness) #

dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c SourceUnpackedness) #

gmapT :: (forall b. Data b => b -> b) -> SourceUnpackedness -> SourceUnpackedness #

gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> SourceUnpackedness -> r #

gmapQr :: (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> SourceUnpackedness -> r #

gmapQ :: (forall d. Data d => d -> u) -> SourceUnpackedness -> [u] #

gmapQi :: Int -> (forall d. Data d => d -> u) -> SourceUnpackedness -> u #

gmapM :: Monad m => (forall d. Data d => d -> m d) -> SourceUnpackedness -> m SourceUnpackedness #

gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> SourceUnpackedness -> m SourceUnpackedness #

gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> SourceUnpackedness -> m SourceUnpackedness #

Data SourceStrictness

Since: base-4.9.0.0

Instance details

Defined in Data.Data

Methods

gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> SourceStrictness -> c SourceStrictness #

gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c SourceStrictness #

toConstr :: SourceStrictness -> Constr #

dataTypeOf :: SourceStrictness -> DataType #

dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c SourceStrictness) #

dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c SourceStrictness) #

gmapT :: (forall b. Data b => b -> b) -> SourceStrictness -> SourceStrictness #

gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> SourceStrictness -> r #

gmapQr :: (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> SourceStrictness -> r #

gmapQ :: (forall d. Data d => d -> u) -> SourceStrictness -> [u] #

gmapQi :: Int -> (forall d. Data d => d -> u) -> SourceStrictness -> u #

gmapM :: Monad m => (forall d. Data d => d -> m d) -> SourceStrictness -> m SourceStrictness #

gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> SourceStrictness -> m SourceStrictness #

gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> SourceStrictness -> m SourceStrictness #

Data DecidedStrictness

Since: base-4.9.0.0

Instance details

Defined in Data.Data

Methods

gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> DecidedStrictness -> c DecidedStrictness #

gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c DecidedStrictness #

toConstr :: DecidedStrictness -> Constr #

dataTypeOf :: DecidedStrictness -> DataType #

dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c DecidedStrictness) #

dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c DecidedStrictness) #

gmapT :: (forall b. Data b => b -> b) -> DecidedStrictness -> DecidedStrictness #

gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> DecidedStrictness -> r #

gmapQr :: (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> DecidedStrictness -> r #

gmapQ :: (forall d. Data d => d -> u) -> DecidedStrictness -> [u] #

gmapQi :: Int -> (forall d. Data d => d -> u) -> DecidedStrictness -> u #

gmapM :: Monad m => (forall d. Data d => d -> m d) -> DecidedStrictness -> m DecidedStrictness #

gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> DecidedStrictness -> m DecidedStrictness #

gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> DecidedStrictness -> m DecidedStrictness #

Data WordPtr

Since: base-4.11.0.0

Instance details

Defined in Data.Data

Methods

gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> WordPtr -> c WordPtr #

gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c WordPtr #

toConstr :: WordPtr -> Constr #

dataTypeOf :: WordPtr -> DataType #

dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c WordPtr) #

dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c WordPtr) #

gmapT :: (forall b. Data b => b -> b) -> WordPtr -> WordPtr #

gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> WordPtr -> r #

gmapQr :: (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> WordPtr -> r #

gmapQ :: (forall d. Data d => d -> u) -> WordPtr -> [u] #

gmapQi :: Int -> (forall d. Data d => d -> u) -> WordPtr -> u #

gmapM :: Monad m => (forall d. Data d => d -> m d) -> WordPtr -> m WordPtr #

gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> WordPtr -> m WordPtr #

gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> WordPtr -> m WordPtr #

Data IntPtr

Since: base-4.11.0.0

Instance details

Defined in Data.Data

Methods

gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> IntPtr -> c IntPtr #

gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c IntPtr #

toConstr :: IntPtr -> Constr #

dataTypeOf :: IntPtr -> DataType #

dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c IntPtr) #

dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c IntPtr) #

gmapT :: (forall b. Data b => b -> b) -> IntPtr -> IntPtr #

gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> IntPtr -> r #

gmapQr :: (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> IntPtr -> r #

gmapQ :: (forall d. Data d => d -> u) -> IntPtr -> [u] #

gmapQi :: Int -> (forall d. Data d => d -> u) -> IntPtr -> u #

gmapM :: Monad m => (forall d. Data d => d -> m d) -> IntPtr -> m IntPtr #

gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> IntPtr -> m IntPtr #

gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> IntPtr -> m IntPtr #

Data ShortByteString 
Instance details

Defined in Data.ByteString.Short.Internal

Methods

gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> ShortByteString -> c ShortByteString #

gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c ShortByteString #

toConstr :: ShortByteString -> Constr #

dataTypeOf :: ShortByteString -> DataType #

dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c ShortByteString) #

dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c ShortByteString) #

gmapT :: (forall b. Data b => b -> b) -> ShortByteString -> ShortByteString #

gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> ShortByteString -> r #

gmapQr :: (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> ShortByteString -> r #

gmapQ :: (forall d. Data d => d -> u) -> ShortByteString -> [u] #

gmapQi :: Int -> (forall d. Data d => d -> u) -> ShortByteString -> u #

gmapM :: Monad m => (forall d. Data d => d -> m d) -> ShortByteString -> m ShortByteString #

gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> ShortByteString -> m ShortByteString #

gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> ShortByteString -> m ShortByteString #

Data ByteString 
Instance details

Defined in Data.ByteString.Lazy.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 :: (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 #

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 :: (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 #

Data IntSet 
Instance details

Defined in Data.IntSet.Internal

Methods

gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> IntSet -> c IntSet #

gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c IntSet #

toConstr :: IntSet -> Constr #

dataTypeOf :: IntSet -> DataType #

dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c IntSet) #

dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c IntSet) #

gmapT :: (forall b. Data b => b -> b) -> IntSet -> IntSet #

gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> IntSet -> r #

gmapQr :: (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> IntSet -> r #

gmapQ :: (forall d. Data d => d -> u) -> IntSet -> [u] #

gmapQi :: Int -> (forall d. Data d => d -> u) -> IntSet -> u #

gmapM :: Monad m => (forall d. Data d => d -> m d) -> IntSet -> m IntSet #

gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> IntSet -> m IntSet #

gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> IntSet -> m IntSet #

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 :: (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 #

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 :: (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 #

Data a => Data [a]

Since: base-4.0.0.0

Instance details

Defined in Data.Data

Methods

gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> [a] -> c [a] #

gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c [a] #

toConstr :: [a] -> Constr #

dataTypeOf :: [a] -> DataType #

dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c [a]) #

dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c [a]) #

gmapT :: (forall b. Data b => b -> b) -> [a] -> [a] #

gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> [a] -> r #

gmapQr :: (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> [a] -> r #

gmapQ :: (forall d. Data d => d -> u) -> [a] -> [u] #

gmapQi :: Int -> (forall d. Data d => d -> u) -> [a] -> u #

gmapM :: Monad m => (forall d. Data d => d -> m d) -> [a] -> m [a] #

gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> [a] -> m [a] #

gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> [a] -> m [a] #

Data a => Data (Maybe a)

Since: base-4.0.0.0

Instance details

Defined in Data.Data

Methods

gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> Maybe a -> c (Maybe a) #

gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c (Maybe a) #

toConstr :: Maybe a -> Constr #

dataTypeOf :: Maybe a -> DataType #

dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c (Maybe a)) #

dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c (Maybe a)) #

gmapT :: (forall b. Data b => b -> b) -> Maybe a -> Maybe a #

gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> Maybe a -> r #

gmapQr :: (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> Maybe a -> r #

gmapQ :: (forall d. Data d => d -> u) -> Maybe a -> [u] #

gmapQi :: Int -> (forall d. Data d => d -> u) -> Maybe a -> u #

gmapM :: Monad m => (forall d. Data d => d -> m d) -> Maybe a -> m (Maybe a) #

gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> Maybe a -> m (Maybe a) #

gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> Maybe a -> m (Maybe a) #

(Data a, Integral a) => Data (Ratio a)

Since: base-4.0.0.0

Instance details

Defined in Data.Data

Methods

gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> Ratio a -> c (Ratio a) #

gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c (Ratio a) #

toConstr :: Ratio a -> Constr #

dataTypeOf :: Ratio a -> DataType #

dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c (Ratio a)) #

dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c (Ratio a)) #

gmapT :: (forall b. Data b => b -> b) -> Ratio a -> Ratio a #

gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> Ratio a -> r #

gmapQr :: (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> Ratio a -> r #

gmapQ :: (forall d. Data d => d -> u) -> Ratio a -> [u] #

gmapQi :: Int -> (forall d. Data d => d -> u) -> Ratio a -> u #

gmapM :: Monad m => (forall d. Data d => d -> m d) -> Ratio a -> m (Ratio a) #

gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> Ratio a -> m (Ratio a) #

gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> Ratio a -> m (Ratio a) #

Data a => Data (Ptr a)

Since: base-4.8.0.0

Instance details

Defined in Data.Data

Methods

gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> Ptr a -> c (Ptr a) #

gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c (Ptr a) #

toConstr :: Ptr a -> Constr #

dataTypeOf :: Ptr a -> DataType #

dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c (Ptr a)) #

dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c (Ptr a)) #

gmapT :: (forall b. Data b => b -> b) -> Ptr a -> Ptr a #

gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> Ptr a -> r #

gmapQr :: (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> Ptr a -> r #

gmapQ :: (forall d. Data d => d -> u) -> Ptr a -> [u] #

gmapQi :: Int -> (forall d. Data d => d -> u) -> Ptr a -> u #

gmapM :: Monad m => (forall d. Data d => d -> m d) -> Ptr a -> m (Ptr a) #

gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> Ptr a -> m (Ptr a) #

gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> Ptr a -> m (Ptr a) #

Data p => Data (Par1 p)

Since: base-4.9.0.0

Instance details

Defined in Data.Data

Methods

gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> Par1 p -> c (Par1 p) #

gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c (Par1 p) #

toConstr :: Par1 p -> Constr #

dataTypeOf :: Par1 p -> DataType #

dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c (Par1 p)) #

dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c (Par1 p)) #

gmapT :: (forall b. Data b => b -> b) -> Par1 p -> Par1 p #

gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> Par1 p -> r #

gmapQr :: (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> Par1 p -> r #

gmapQ :: (forall d. Data d => d -> u) -> Par1 p -> [u] #

gmapQi :: Int -> (forall d. Data d => d -> u) -> Par1 p -> u #

gmapM :: Monad m => (forall d. Data d => d -> m d) -> Par1 p -> m (Par1 p) #

gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> Par1 p -> m (Par1 p) #

gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> Par1 p -> m (Par1 p) #

Data a => Data (ForeignPtr a)

Since: base-4.8.0.0

Instance details

Defined in Data.Data

Methods

gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> ForeignPtr a -> c (ForeignPtr a) #

gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c (ForeignPtr a) #

toConstr :: ForeignPtr a -> Constr #

dataTypeOf :: ForeignPtr a -> DataType #

dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c (ForeignPtr a)) #

dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c (ForeignPtr a)) #

gmapT :: (forall b. Data b => b -> b) -> ForeignPtr a -> ForeignPtr a #

gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> ForeignPtr a -> r #

gmapQr :: (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> ForeignPtr a -> r #

gmapQ :: (forall d. Data d => d -> u) -> ForeignPtr a -> [u] #

gmapQi :: Int -> (forall d. Data d => d -> u) -> ForeignPtr a -> u #

gmapM :: Monad m => (forall d. Data d => d -> m d) -> ForeignPtr a -> m (ForeignPtr a) #

gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> ForeignPtr a -> m (ForeignPtr a) #

gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> ForeignPtr a -> m (ForeignPtr a) #

Data a => Data (Identity a)

Since: base-4.9.0.0

Instance details

Defined in Data.Data

Methods

gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> Identity a -> c (Identity a) #

gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c (Identity a) #

toConstr :: Identity a -> Constr #

dataTypeOf :: Identity a -> DataType #

dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c (Identity a)) #

dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c (Identity a)) #

gmapT :: (forall b. Data b => b -> b) -> Identity a -> Identity a #

gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> Identity a -> r #

gmapQr :: (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> Identity a -> r #

gmapQ :: (forall d. Data d => d -> u) -> Identity a -> [u] #

gmapQi :: Int -> (forall d. Data d => d -> u) -> Identity a -> u #

gmapM :: Monad m => (forall d. Data d => d -> m d) -> Identity a -> m (Identity a) #

gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> Identity a -> m (Identity a) #

gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> Identity a -> m (Identity a) #

Data a => Data (First a)

Since: base-4.8.0.0

Instance details

Defined in Data.Data

Methods

gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> First a -> c (First a) #

gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c (First a) #

toConstr :: First a -> Constr #

dataTypeOf :: First a -> DataType #

dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c (First a)) #

dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c (First a)) #

gmapT :: (forall b. Data b => b -> b) -> First a -> First a #

gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> First a -> r #

gmapQr :: (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> First a -> r #

gmapQ :: (forall d. Data d => d -> u) -> First a -> [u] #

gmapQi :: Int -> (forall d. Data d => d -> u) -> First a -> u #

gmapM :: Monad m => (forall d. Data d => d -> m d) -> First a -> m (First a) #

gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> First a -> m (First a) #

gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> First a -> m (First a) #

Data a => Data (Last a)

Since: base-4.8.0.0

Instance details

Defined in Data.Data

Methods

gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> Last a -> c (Last a) #

gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c (Last a) #

toConstr :: Last a -> Constr #

dataTypeOf :: Last a -> DataType #

dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c (Last a)) #

dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c (Last a)) #

gmapT :: (forall b. Data b => b -> b) -> Last a -> Last a #

gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> Last a -> r #

gmapQr :: (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> Last a -> r #

gmapQ :: (forall d. Data d => d -> u) -> Last a -> [u] #

gmapQi :: Int -> (forall d. Data d => d -> u) -> Last a -> u #

gmapM :: Monad m => (forall d. Data d => d -> m d) -> Last a -> m (Last a) #

gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> Last a -> m (Last a) #

gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> Last a -> m (Last a) #

Data a => Data (Dual a)

Since: base-4.8.0.0

Instance details

Defined in Data.Data

Methods

gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> Dual a -> c (Dual a) #

gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c (Dual a) #

toConstr :: Dual a -> Constr #

dataTypeOf :: Dual a -> DataType #

dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c (Dual a)) #

dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c (Dual a)) #

gmapT :: (forall b. Data b => b -> b) -> Dual a -> Dual a #

gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> Dual a -> r #

gmapQr :: (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> Dual a -> r #

gmapQ :: (forall d. Data d => d -> u) -> Dual a -> [u] #

gmapQi :: Int -> (forall d. Data d => d -> u) -> Dual a -> u #

gmapM :: Monad m => (forall d. Data d => d -> m d) -> Dual a -> m (Dual a) #

gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> Dual a -> m (Dual a) #

gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> Dual a -> m (Dual a) #

Data a => Data (Sum a)

Since: base-4.8.0.0

Instance details

Defined in Data.Data

Methods

gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> Sum a -> c (Sum a) #

gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c (Sum a) #

toConstr :: Sum a -> Constr #

dataTypeOf :: Sum a -> DataType #

dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c (Sum a)) #

dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c (Sum a)) #

gmapT :: (forall b. Data b => b -> b) -> Sum a -> Sum a #

gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> Sum a -> r #

gmapQr :: (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> Sum a -> r #

gmapQ :: (forall d. Data d => d -> u) -> Sum a -> [u] #

gmapQi :: Int -> (forall d. Data d => d -> u) -> Sum a -> u #

gmapM :: Monad m => (forall d. Data d => d -> m d) -> Sum a -> m (Sum a) #

gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> Sum a -> m (Sum a) #

gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> Sum a -> m (Sum a) #

Data a => Data (Product a)

Since: base-4.8.0.0

Instance details

Defined in Data.Data

Methods

gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> Product a -> c (Product a) #

gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c (Product a) #

toConstr :: Product a -> Constr #

dataTypeOf :: Product a -> DataType #

dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c (Product a)) #

dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c (Product a)) #

gmapT :: (forall b. Data b => b -> b) -> Product a -> Product a #

gmapQl :: (r -> r' ->