Piped

Documentation

data Pipe i o m a

The Pipe datatype, that represents a stage in a pipeline with inputs of type i and outputs of type o.

Instances

MonadState s m => MonadState s (Pipe i o m)

Defined in Piped.Internal

Methods

get :: Pipe i o m s

put :: s -> Pipe i o m ()

state :: (s -> (a, s)) -> Pipe i o m a

MonadReader r m => MonadReader r (Pipe i o m)

Defined in Piped.Internal

Methods

ask :: Pipe i o m r

local :: (r -> r) -> Pipe i o m a -> Pipe i o m a

reader :: (r -> a) -> Pipe i o m a

MonadTrans (Pipe i o)

Defined in Piped.Internal

Methods

lift :: Monad m => m a -> Pipe i o m a

Monad m => Monad (Pipe i o m)

Defined in Piped.Internal

Methods

(>>=) :: Pipe i o m a -> (a -> Pipe i o m b) -> Pipe i o m b

(>>) :: Pipe i o m a -> Pipe i o m b -> Pipe i o m b

return :: a -> Pipe i o m a

fail :: String -> Pipe i o m a

Monad m => Functor (Pipe i o m)

Defined in Piped.Internal

Methods

fmap :: (a -> b) -> Pipe i o m a -> Pipe i o m b

(<$) :: a -> Pipe i o m b -> Pipe i o m a

Monad m => Applicative (Pipe i o m)

Defined in Piped.Internal

Methods

pure :: a -> Pipe i o m a

(<*>) :: Pipe i o m (a -> b) -> Pipe i o m a -> Pipe i o m b

liftA2 :: (a -> b -> c) -> Pipe i o m a -> Pipe i o m b -> Pipe i o m c

(*>) :: Pipe i o m a -> Pipe i o m b -> Pipe i o m b

(<*) :: Pipe i o m a -> Pipe i o m b -> Pipe i o m a

MonadIO m => MonadIO (Pipe i o m)

Defined in Piped.Internal

Methods

liftIO :: IO a -> Pipe i o m a

Monad m => Semigroup (Pipe i o m a)

Defined in Piped.Internal

Methods

(<>) :: Pipe i o m a -> Pipe i o m a -> Pipe i o m a

sconcat :: NonEmpty (Pipe i o m a) -> Pipe i o m a

stimes :: Integral b => b -> Pipe i o m a -> Pipe i o m a

Monad m => Monoid (Pipe i o m ())

Defined in Piped.Internal

Methods

mempty :: Pipe i o m ()

mappend :: Pipe i o m () -> Pipe i o m () -> Pipe i o m ()

mconcat :: [Pipe i o m ()] -> Pipe i o m ()

await :: Monad m => Pipe i o m (Maybe i)

Await a value. Nothing indicates that there are no more values.

yield :: o -> Pipe i o m ()

Yield a value to downstream.

(.|) :: Monad m => Pipe i e m () -> Pipe e o m b -> Pipe i o m b

Demand driven; same as 'composeDemand

(|.) :: Monad m => Pipe i e m a -> Pipe e o m a -> Pipe i o m a

Supply driven; same as 'composeSupplyEither

runPipe :: Monad m => Pipe () Void m r -> m r

Run pipe to completion.

leftover :: i -> Pipe i o m ()

Push a value back into the incoming pipeline

awaitForever :: Monad m => (i -> Pipe i o m a) -> Pipe i o m ()

Consume all values using given function

awaitMaybe :: Pipe i o m a -> (i -> Pipe i o m a) -> Pipe i o m a

Basically `await >>= maybe ...`, but avoids the conversion to a maybe type.

awaitJust :: Monad m => (i -> Pipe i o m ()) -> Pipe i o m ()

Act on a value, if there is no value then return ().

yieldM :: Monad m => Pipe i o m o -> Pipe i o m ()

Yield the result of a monadic action.

sourceList :: (Monad m, Foldable t) => t o -> Pipe () o m ()

Yield all values from a foldable data structure such as a list.

sinkList :: Pipe i Void m [i]

Return all input values as a list.

sinkNull :: Monad m => Pipe i Void m ()

Discard all input values

data Void

Uninhabited data type

Since: base-4.8.0.0

Instances

Eq Void

Since: base-4.8.0.0

Defined in Data.Void

Methods

(==) :: Void -> Void -> Bool

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

Data Void

Since: base-4.8.0.0

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

Ord Void

Since: base-4.8.0.0

Defined in Data.Void

Methods

compare :: Void -> Void -> Ordering

(<) :: Void -> Void -> Bool

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

(>) :: Void -> Void -> Bool

(>=) :: Void -> Void -> Bool

max :: Void -> Void -> Void

min :: Void -> Void -> Void

Read Void

Reading a Void value is always a parse error, considering Void as a data type with no constructors.

Since: base-4.8.0.0

Defined in Data.Void

Methods

readsPrec :: Int -> ReadS Void

readList :: ReadS [Void]

readPrec :: ReadPrec Void

readListPrec :: ReadPrec [Void]

Show Void

Since: base-4.8.0.0

Defined in Data.Void

Methods

showsPrec :: Int -> Void -> ShowS

show :: Void -> String

showList :: [Void] -> ShowS

Ix Void

Since: base-4.8.0.0

Defined in Data.Void

Methods

range :: (Void, Void) -> [Void]

index :: (Void, Void) -> Void -> Int

unsafeIndex :: (Void, Void) -> Void -> Int

inRange :: (Void, Void) -> Void -> Bool

rangeSize :: (Void, Void) -> Int

unsafeRangeSize :: (Void, Void) -> Int

Generic Void

Defined in Data.Void

Associated Types

type Rep Void :: Type -> Type

Methods

from :: Void -> Rep Void x

to :: Rep Void x -> Void

Semigroup Void

Since: base-4.9.0.0

Defined in Data.Void

Methods

(<>) :: Void -> Void -> Void

sconcat :: NonEmpty Void -> Void

stimes :: Integral b => b -> Void -> Void

Exception Void

Since: base-4.8.0.0

Defined in Data.Void

Methods

toException :: Void -> SomeException

fromException :: SomeException -> Maybe Void

displayException :: Void -> String

type Rep Void

Since: base-4.8.0.0

Defined in Data.Void

type Rep Void = D1 (MetaData "Void" "Data.Void" "base" False) (V1 :: Type -> Type)