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reactive: Simple foundation for functional reactive programming

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Reactive is a simple foundation for programming reactive systems functionally. Like Fran/FRP, it has a notions of (reactive) behaviors and events. Unlike most previous FRP implementations, Reactive has a hybrid demand/data-driven implementation, as described in the paper "Simply efficient functional reactivity", http://conal.net/papers/simply-reactive/.

Import FRP.Reactive for FRP client apps. To make an Reactive adapter for an imperative library, import FRP.Reactive.LegacyAdapters.

Please see the project wiki page: http://haskell.org/haskellwiki/reactive

The module documentation pages have links to colorized source code and to wiki pages where you can read and contribute user comments. Enjoy!

© 2007-2008 by Conal Elliott; BSD3 license.

Contributions from: Thomas Davie, Luke Palmer, David Sankel. (Please let me know if I've forgotten to list you.)

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Versions [RSS] 0.0, 0.2, 0.3, 0.5, 0.5.0.1, 0.8.3, 0.8.6, 0.8.8, 0.9.0, 0.9.1, 0.9.3, 0.9.4, 0.9.5, 0.9.6, 0.9.7, 0.9.8, 0.9.9, 0.9.10, 0.10.0, 0.10.1, 0.10.2, 0.10.3, 0.10.4, 0.10.5, 0.10.7, 0.11, 0.11.2, 0.11.3, 0.11.4, 0.11.5
Dependencies base, checkers, old-time, QuickCheck (<2.0), random, TypeCompose (>=0.3), unamb, vector-space (>=0.5) [details]
License BSD-3-Clause
Copyright (c) 2007-2008 by Conal Elliott
Author Conal Elliott
Maintainer conal@conal.net
Category reactivity, FRP
Home page http://haskell.org/haskellwiki/reactive
Uploaded by ConalElliott at 2008-11-09T21:17:45Z
Distributions
Reverse Dependencies 4 direct, 4 indirect [details]
Downloads 20848 total (77 in the last 30 days)
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Readme for reactive-0.8.8

[back to package description] 
_Reactive_ [1] is a simple foundation for programming reactive systems
functionally.  Like Fran/FRP, it has a notions of (reactive) behaviors and
events.  Like DataDriven [2], Reactive has a data-driven implementation.

The inspiration for Reactive was Mike Sperber's Lula [3] implementation of
FRP.  Mike used blocking threads, which I had never considered for FRP.
While playing with the idea, I realized that I could give a very elegant
and efficient solution to caching, which DataDriven doesn't do.  (For an
application "f <*> a" of a varying function to a varying argument, caching
remembers the latest function to apply to a new argument and the last
argument to which to apply a new function.)

The theory and implementation of Reactive are described in the paper "Simply
efficient functional reactivity" [4].

Please share any comments & suggestions on the discussion (talk) page [1].

Note that cabal[5], version 1.4.0.1 or greater is required for installation.

You can configure, build, and install all in the usual way with Cabal
commands.

  runhaskell Setup.lhs configure
  runhaskell Setup.lhs build
  runhaskell Setup.lhs install


References:

[1] http://haskell.org/haskellwiki/Reactive
[2] http://haskell.org/haskellwiki/DataDriven
[3] http://www-pu.informatik.uni-tuebingen.de/lula/deutsch/publications.html
[4] http://conal.net/papers/simply-reactive
[5] http://www.haskell.org/cabal/download.html