Pipes.Fluid.ImpulseIO

Documentation

newtype ImpulseIO m a

The applicative instance of this combines multiple Producers reactively ie, yields a value as soon as either or both of the input producers yields a value. This creates two threads each time this combinator is used. Warning: This means that the monadic effects are run in isolation from each other so if the monad is something like (StateT s IO), then the state will alternate between the two input producers, which is most likely not what you want.

Constructors

ImpulseIO

Fields

• impulsivelyIO :: Producer a m ()

Instances

Monad m => Functor (ImpulseIO m)

Methods

fmap :: (a -> b) -> ImpulseIO m a -> ImpulseIO m b

(<$) :: a -> ImpulseIO m b -> ImpulseIO m a

(MonadBaseControl IO m, Forall * (Pure m)) => Applicative (ImpulseIO m)

Methods

pure :: a -> ImpulseIO m a

(<*>) :: ImpulseIO m (a -> b) -> ImpulseIO m a -> ImpulseIO m b

liftA2 :: (a -> b -> c) -> ImpulseIO m a -> ImpulseIO m b -> ImpulseIO m c

(*>) :: ImpulseIO m a -> ImpulseIO m b -> ImpulseIO m b

(<*) :: ImpulseIO m a -> ImpulseIO m b -> ImpulseIO m a

(MonadBaseControl IO m, Forall * (Pure m)) => Merge (ImpulseIO m)

Reactively combines two producers, given initial values to use when the produce hasn't produced anything yet Combine two signals, and returns a signal that emits Either bothfired (Either (leftFired, previousRight) (previousLeft, rightFired)). This creates two threads each time this combinator is used. Warning: This means that the monadic effects are run in isolation from each other so if the monad is something like (StateT s IO), then the state will alternate between the two input producers, which is most likely not what you want. This will be detect as a compile error due to use of Control.Concurrent.Async.Lifted.Safe

Methods

merge' :: Maybe x -> Maybe y -> ImpulseIO m x -> ImpulseIO m y -> ImpulseIO m (Merged x y)

(MonadBaseControl IO m, Forall * (Pure m), Semigroup a) => Semigroup (ImpulseIO m a)

Methods

(<>) :: ImpulseIO m a -> ImpulseIO m a -> ImpulseIO m a

sconcat :: NonEmpty (ImpulseIO m a) -> ImpulseIO m a

stimes :: Integral b => b -> ImpulseIO m a -> ImpulseIO m a

(MonadBaseControl IO m, Forall * (Pure m), Semigroup a) => Monoid (ImpulseIO m a)

Methods

mempty :: ImpulseIO m a

mappend :: ImpulseIO m a -> ImpulseIO m a -> ImpulseIO m a

mconcat :: [ImpulseIO m a] -> ImpulseIO m a

Wrapped (ImpulseIO m a)

Associated Types

type Unwrapped (ImpulseIO m a) :: *

Methods

_Wrapped' :: Iso' (ImpulseIO m a) (Unwrapped (ImpulseIO m a))

(~) * (ImpulseIO m1 a1) t => Rewrapped (ImpulseIO m2 a2) t

type Unwrapped (ImpulseIO m a)

type Unwrapped (ImpulseIO m a) = Producer a m ()

module Pipes.Fluid.Merge