Eventful.UUID

This module contains orphan UUID instances and a few convenience functions around UUIDs. It would be great if this were its own entirely separate package.

Documentation

data UUID :: *

The UUID type. A Random instance is provided which produces version 4 UUIDs as specified in RFC 4122. The Storable and Binary instances are compatible with RFC 4122, storing the fields in network order as 16 bytes.

Instances

Eq UUID

Methods

(==) :: UUID -> UUID -> Bool

(/=) :: UUID -> UUID -> Bool

Data UUID

Methods

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

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

toConstr :: UUID -> Constr

dataTypeOf :: UUID -> DataType

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

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

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

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

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

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

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

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

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

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

Ord UUID

Methods

compare :: UUID -> UUID -> Ordering

(<) :: UUID -> UUID -> Bool

(<=) :: UUID -> UUID -> Bool

(>) :: UUID -> UUID -> Bool

(>=) :: UUID -> UUID -> Bool

max :: UUID -> UUID -> UUID

min :: UUID -> UUID -> UUID

Read UUID

Methods

readsPrec :: Int -> ReadS UUID

readList :: ReadS [UUID]

readPrec :: ReadPrec UUID

readListPrec :: ReadPrec [UUID]

Show UUID

Methods

showsPrec :: Int -> UUID -> ShowS

show :: UUID -> String

showList :: [UUID] -> ShowS

Hashable UUID

Methods

hashWithSalt :: Int -> UUID -> Int

hash :: UUID -> Int

ToJSON UUID

Methods

toJSON :: UUID -> Value

toEncoding :: UUID -> Encoding

toJSONList :: [UUID] -> Value

toEncodingList :: [UUID] -> Encoding

ToJSONKey UUID

Methods

toJSONKey :: ToJSONKeyFunction UUID

toJSONKeyList :: ToJSONKeyFunction [UUID]

FromJSON UUID

Methods

parseJSON :: Value -> Parser UUID

parseJSONList :: Value -> Parser [UUID]

FromJSONKey UUID

Methods

fromJSONKey :: FromJSONKeyFunction UUID

fromJSONKeyList :: FromJSONKeyFunction [UUID]

Storable UUID

Methods

sizeOf :: UUID -> Int

alignment :: UUID -> Int

peekElemOff :: Ptr UUID -> Int -> IO UUID

pokeElemOff :: Ptr UUID -> Int -> UUID -> IO ()

peekByteOff :: Ptr b -> Int -> IO UUID

pokeByteOff :: Ptr b -> Int -> UUID -> IO ()

peek :: Ptr UUID -> IO UUID

poke :: Ptr UUID -> UUID -> IO ()

Binary UUID

Methods

put :: UUID -> Put

get :: Get UUID

putList :: [UUID] -> Put

NFData UUID

Methods

rnf :: UUID -> ()

ToHttpApiData UUID

Methods

toUrlPiece :: UUID -> Text

toEncodedUrlPiece :: UUID -> Builder

toHeader :: UUID -> ByteString

toQueryParam :: UUID -> Text

FromHttpApiData UUID

Methods

parseUrlPiece :: Text -> Either Text UUID

parseHeader :: ByteString -> Either Text UUID

parseQueryParam :: Text -> Either Text UUID

Random UUID

Methods

randomR :: RandomGen g => (UUID, UUID) -> g -> (UUID, g)

random :: RandomGen g => g -> (UUID, g)

randomRs :: RandomGen g => (UUID, UUID) -> g -> [UUID]

randoms :: RandomGen g => g -> [UUID]

randomRIO :: (UUID, UUID) -> IO UUID

randomIO :: IO UUID

uuidFromText :: Text -> Maybe UUID

uuidToText :: UUID -> Text

nil :: UUID

The nil UUID, as defined in RFC 4122. It is a UUID of all zeros. null u iff u == nil.

uuidNextRandom :: IO UUID

uuidFromInteger :: Integer -> UUID

Constructs a valid UUID from an Integer by padding with zeros. Useful for testing.

>>> uuidFromInteger 1
00000000-0000-0000-0000-000000000001

Orphan instances

PathPiece UUID

Methods

fromPathPiece :: Text -> Maybe UUID

toPathPiece :: UUID -> Text