Difference between revisions of "Reactive-banana"

Revision as of 19:15, 24 December 2014

What is it?

Reactive banana displaying trigger-happy Behavior.

Reactive-banana is a library for Functional Reactive Programming (FRP).

FRP offers an elegant and concise way to express interactive programs such as graphical user interfaces, animations, computer music or robot controllers. In particular, it promises to avoid the spaghetti code that is all too common in traditional approaches to GUI programming.

The goal of the library is to provide a solid foundation.

Programmers interested in the implementation of FRP will have a reference for a simple semantics with a working implementation. The library stays close to the semantics pioneered by Conal Elliott.
The library features an efficient implementation. No more spooky time leaks, predicting space & time usage should be straightforward.
A plethora of example code helps with getting started.

The library is meant to be used in conjunction with existing libraries that are specific to your problem domain. For instance, you can hook it into any event-based GUI framework, like wxHaskell or Gtk2Hs. Several helper packages like reactive-banana-wx provide a small amount of glue code that can make life easier.

Feedback is welcome, I want to hear from you!

Status

Current development focuses on performance. Applications to GUI programming are explored in the sister project threepenny-gui.

29 January 2014: reactive-banana 0.8.0.0 released.
21 November 2013: reactive-threepenny-gui deprecated again, because threepenny-gui now has its own FRP subsystem built-in.
02 August 2013: Initial release of reactive-banana-threepenny. Binds to the threepenny-gui GUI library.
26 August 2012: reactive-banana 0.7.0.0 released. Features dynamic event switching.
15 May 2012: reactive-banana 0.6.0.0 released.
25 March 2012: reactive-banana 0.5.0.0 released.
24 October 2011: reactive-banana 0.4.3.0 released.
26 September 2011: Added some more examples, reactive-banana 0.4.2.0 released.
14 July 2011: Implemented many examples, reactive-banana 0.4.1.0 released.
22 June 2011: reactive-banana 0.3.0.0 released
28 April 2011: reactive-banana 0.2.0.0 released

Fake Testimonials

"In the programming-language world, one rule of survival is simple: dance or die. This library makes dancing easy." – Simon Banana Jones

"About the use of language: it is impossible to sharpen a pencil with a blunt axe. You should try reactive-banana instead." — Event Dijkstra

"When I need a bullet event, I can just trigger it." — Billy the Reactive Banana

"This should be in a museum!" — Banana Jones

"Hey Mister! Why not use reactive-banana as a smartphone app to brush your teeth?" — Tommy "Banana" Johnson

Releases and Resources

Download and installation from Hackage
- reactive-banana - the FRP library itself
- reactive-banana-sdl - binding to the SDL library
- reactive-banana-wx - binding to the wxHaskell GUI library

Documentation
Feedback and Contact
- Maintainer: Heinrich Apfelmus
- Bugs and feature requests? Issue Tracker!
- Questions? Ask on StackOverflow!
- More questions? Email or live help!
Source code on github
- reactive-banana development branch
- reactive-banana-wx master branch

External Links

breakout, a small game

@@ Line 5: / Line 5: @@
 ''Reactive-banana'' is a library for [[Functional Reactive Programming]] (FRP).
-FRP offers an elegant and concise way to express interactive programs such as graphical user interfaces, animations, [[Reactive-balsa|computer music]] or robot controllers. It promises to avoid the spaghetti code that is all too common in traditional approaches to GUI programming.
+FRP offers an elegant and concise way to express interactive programs such as graphical user interfaces, animations, [[Reactive-balsa|computer music]] or robot controllers. In particular, it promises to avoid the spaghetti code that is all too common in traditional approaches to GUI programming.
 The goal of the library is to provide a solid foundation.
-* Writing '''graphical user interfaces''' with FRP is made easy. The library can be hooked into ''any'' existing event-based framework like [[wxHaskell]] or [[Gtk2Hs]]. A plethora of [[#documentation|example code]] helps with getting started. You can mix FRP and imperative style. If you don't know how to express functionality in terms of FRP, just temporarily switch back to the imperative style.
 * Programmers interested in the implementation of FRP will have a '''reference''' for a '''simple semantics''' with a working implementation. The library stays close to the semantics pioneered by Conal Elliott.
 * The library features an '''efficient implementation'''. No more spooky time leaks, predicting space & time usage should be straightforward.
+* A plethora of [[#documentation|example code]] helps with getting started.
+The library is meant to be used in conjunction with existing libraries that are specific to your problem domain. For instance, you can hook it into ''any'' event-based GUI framework, like [[wxHaskell]] or [[Gtk2Hs]]. Several helper packages like {{HackagePackage|id=reactive-banana-wx}} provide a small amount of glue code that can make life easier.
 [[#feedback|Feedback]] is welcome, I want to hear from you!