FRP.Grapefruit.Signal.Continuous

grapefruit-frp-0.0.0.0: Functional Reactive Programming core

Source code

Contents

Index

Contents

Continuous signal type
Conversion
Connectors

Description

This module is about continuous signals.

For a general introduction to signals, see the documentation of FRP.Grapefruit.Signal.

Synopsis

data CSignal era val

fromSSignal :: SSignal era val -> CSignal era val

producer :: IO val -> Producer CSignal val

Continuous signal type

data CSignal era val

Source

The type of continuous signals.

A continuous signal denotes a mapping from times to values. You can think of CSignal era val as being equivalent to Time era -> val where Time era is the type of all times of the given era.

Continuous signals are used to describe continuously changing values. They are also used for values changing at discrete times if there is no possibility of being notified about such changes. If there is a notification mechanism then segemented signals, provided by FRP.Grapefruit.Signal.Segmented, should be used.

Instances

Samplee CSignal

Signal CSignal

Functor (CSignal era)

Applicative (CSignal era)

Conversion

fromSSignal :: SSignal era val -> CSignal era val

Source

Converts a segmented signal into a continous signal, dropping the information about update points.

Connectors

producer :: IO val -> Producer CSignal val

Source

Converts a value read action into a continuous signal producer.

The producer producer readVal produces a continuous signal whose current value is determined by executing readVal.

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