Copyright	(c) Ivan Perez 2019-2022 (c) Ivan Perez and Manuel Baerenz 2016-2018
License	BSD3
Maintainer	ivan.perez@keera.co.uk
Safe Haskell	Safe-Inferred
Language	Haskell2010

FRP.BearRiver.Hybrid

Contents

Discrete to continuous-time signal functions
- Wave-form generation
- Accumulators
Events

Description

Discrete to continuous-time signal functions.

Synopsis

hold :: Monad m => a -> SF m (Event a) a
accumBy :: Monad m => (b -> a -> b) -> b -> SF m (Event a) (Event b)
accumHoldBy :: Monad m => (b -> a -> b) -> b -> SF m (Event a) b
mapEventS :: Monad m => SF m a b -> SF m (Event a) (Event b)

Discrete to continuous-time signal functions

Wave-form generation

hold :: Monad m => a -> SF m (Event a) a Source #

Zero-order hold.

Converts a discrete-time signal into a continuous-time signal, by holding the last value until it changes in the input signal. The given parameter may be used for time zero, and until the first event occurs in the input signal, so hold is always well-initialized.

>>> embed (hold 1) (deltaEncode 0.1 [NoEvent, NoEvent, Event 2, NoEvent, Event 3, NoEvent])
[1,1,2,2,3,3]

Accumulators

accumBy :: Monad m => (b -> a -> b) -> b -> SF m (Event a) (Event b) Source #

Accumulator parameterized by the accumulation function.

accumHoldBy :: Monad m => (b -> a -> b) -> b -> SF m (Event a) b Source #

Zero-order hold accumulator parameterized by the accumulation function.

Events

mapEventS :: Monad m => SF m a b -> SF m (Event a) (Event b) Source #

Apply an SF to every input. Freezes temporarily if the input is NoEvent, and continues as soon as an Event is received.