Yampa-0.14.4: Elegant Functional Reactive Programming Language for Hybrid Systems
Copyright(c) Ivan Perez 2014-2022
(c) George Giorgidze 2007-2012
(c) Henrik Nilsson 2005-2006
(c) Antony Courtney and Henrik Nilsson Yale University 2003-2004
LicenseBSD-style (see the LICENSE file in the distribution)
Maintainerivan.perez@keera.co.uk
Stabilityprovisional
Portabilitynon-portable (GHC extensions)
Safe HaskellSafe-Inferred
LanguageHaskell2010

FRP.Yampa.Delays

Description

SF primitives and combinators to delay signals, introducing new values in them.

Synopsis

Basic delays

pre :: SF a a Source #

Uninitialized delay operator.

The output has an infinitesimal delay (1 sample), and the value at time zero is undefined.

iPre :: a -> SF a a Source #

Initialized delay operator.

Creates an SF that delays the input signal, introducing an infinitesimal delay (one sample), using the given argument to fill in the initial output at time zero.

fby :: b -> SF a b -> SF a b infixr 0 Source #

Lucid-Synchrone-like initialized delay (read "followed by").

Initialized delay combinator, introducing an infinitesimal delay (one sample) in given SF, using the given argument to fill in the initial output at time zero.

The difference with iPre is that fby takes an SF as argument.

Timed delays

delay :: Time -> a -> SF a a Source #

Delay a signal by a fixed time t, using the second parameter to fill in the initial t seconds.