Potoki.Transform

Documentation

data Transform input output :: * -> * -> *

Instances

Arrow Transform

Methods

arr :: (b -> c) -> Transform b c

first :: Transform b c -> Transform (b, d) (c, d)

second :: Transform b c -> Transform (d, b) (d, c)

(***) :: Transform b c -> Transform b' c' -> Transform (b, b') (c, c')

(&&&) :: Transform b c -> Transform b c' -> Transform b (c, c')

ArrowChoice Transform

Methods

left :: Transform b c -> Transform (Either b d) (Either c d)

right :: Transform b c -> Transform (Either d b) (Either d c)

(+++) :: Transform b c -> Transform b' c' -> Transform (Either b b') (Either c c')

(|||) :: Transform b d -> Transform c d -> Transform (Either b c) d

Profunctor Transform

Methods

dimap :: (a -> b) -> (c -> d) -> Transform b c -> Transform a d

lmap :: (a -> b) -> Transform b c -> Transform a c

rmap :: (b -> c) -> Transform a b -> Transform a c

(#.) :: Coercible * c b => (b -> c) -> Transform a b -> Transform a c

(.#) :: Coercible * b a => Transform b c -> (a -> b) -> Transform a c

Strong Transform

Methods

first' :: Transform a b -> Transform (a, c) (b, c)

second' :: Transform a b -> Transform (c, a) (c, b)

Choice Transform

Methods

left' :: Transform a b -> Transform (Either a c) (Either b c)

right' :: Transform a b -> Transform (Either c a) (Either c b)

Category * Transform

Methods

id :: cat a a

(.) :: cat b c -> cat a b -> cat a c

Potoki integration

consume :: Consume input output -> Transform input output

produce :: (input -> Produce output) -> Transform input output

Basics

ioTransform :: IO (Transform a b) -> Transform a b

take :: Int -> Transform input input

takeWhile :: (input -> Bool) -> Transform input input

mapFilter :: (input -> Maybe output) -> Transform input output

filter :: (input -> Bool) -> Transform input input

just :: Transform (Maybe input) input

distinct :: (Eq element, Hashable element) => Transform element element

builderChunks :: Transform Builder ByteString

executeIO :: Transform (IO a) a

Execute the IO action.

mapInIO :: (a -> IO b) -> Transform a b

Parsing

parseBytes :: Parser parsed -> Transform ByteString (Either Text parsed)

Lift an Attoparsec ByteString parser.

parseText :: Parser parsed -> Transform Text (Either Text parsed)

Lift an Attoparsec Text parser.

Concurrency

bufferize :: Int -> Transform element element

concurrently :: Int -> Transform input output -> Transform input output

Execute the transform on the specified amount of threads. The order of the outputs produced is indiscriminate.

File IO

deleteFile :: Transform FilePath (Either IOException ())

appendBytesToFile :: Transform (FilePath, ByteString) (Either IOException ())