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Yampa

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(Link to "Demonstrating a Time Leak in Arrowized FRP" redirected to the Web archive; removed link to Edward Amsden's blog (dead link))
(Updated links to Vimeo, Euterpea, Nettle, foo.ps)
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** [http://lambdor.net/?p=117 Dataflow diagram of Yampa reactimate]
 
** [http://lambdor.net/?p=117 Dataflow diagram of Yampa reactimate]
 
** [http://lambdor.net/?p=113 Activity diagram of Yampa reactimate]
 
** [http://lambdor.net/?p=113 Activity diagram of Yampa reactimate]
* References: [https://frvr.svn.sourceforge.net/svnroot/frvr/AFRP/trunk/src/foo.ps ps], [http://lambdor.net/wp-content/uploads/2010/12/AFRP-Reference.pdf pdf]
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* References: [https://svn.code.sf.net/p/frvr/code/AFRP/trunk/src/foo.ps ps], [http://lambdor.net/wp-content/uploads/2010/12/AFRP-Reference.pdf pdf]
 
* Videos
 
* Videos
** [http://vimeo.com/6632457 Safe Functional Reactive Programming through Dependent Types]
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** [https://vimeo.com/6632457 Safe Functional Reactive Programming through Dependent Types]
** [http://vimeo.com/6652662 Causal Commutative Arrows and Their Optimization]
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** [https://vimeo.com/6652662 Causal Commutative Arrows and Their Optimization]
 
** [http://www.youtube.com/watch?v=xtmo6Bmfahc Euterpea: From signals to symphonies]
 
** [http://www.youtube.com/watch?v=xtmo6Bmfahc Euterpea: From signals to symphonies]
  
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* {{HackagePackage|id=cuboid}}; a small puzzle game
 
* {{HackagePackage|id=cuboid}}; a small puzzle game
 
* {{HackagePackage|id=Haskelloids}}; asteroids clone
 
* {{HackagePackage|id=Haskelloids}}; asteroids clone
* [http://haskell.cs.yale.edu/?page_id=376 Nettle] - Programming Network Routers
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* [http://haskell.cs.yale.edu/nettle/ Nettle] - Programming Network Routers
* [http://haskell.cs.yale.edu/?page_id=103 Euterpea] - computer music development (also uses [[CCA]])
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* [http://haskell.cs.yale.edu/euterpea/ Euterpea] - computer music development (also uses [[CCA]])
 
* {{HackagePackage|id=YFrob}}; robot simulation
 
* {{HackagePackage|id=YFrob}}; robot simulation
 
* [https://github.com/ivanperez-keera/haskanoid Haskanoid] A breakout-like videogame with SDL graphics and sound that can optionally be controlled with a Wiimote.
 
* [https://github.com/ivanperez-keera/haskanoid Haskanoid] A breakout-like videogame with SDL graphics and sound that can optionally be controlled with a Wiimote.

Revision as of 09:01, 15 September 2015

Yampa is a domain-specific embedded language for the programming of hybrid (discrete and continuous time) systems using the concepts of Functional Reactive Programming (FRP). Yampa is structured using Arrows, which greatly reduce the chance of introducing space- and time-leaks into reactive, time-varying systems.

Yampa was originally developed by the Yale Haskell Group based on the original idea of Conal Elliott's Fran.

Hackage: Yampa

Contents

1 Introduction

2 Primitive signal functions

Yampa signal functions.png

(download original Image:Yampa signal functions.svg‎)

3 Switches

Each switch comes in two different flavors:

  1. immediate: switch to the new behaviour immediately and also calculate the return value based on the new behaviour.
  2. delayed: return the value based on the old behaviour, but use the new behaviour afterwards. To use delayed switch prefix the switching functions with the letter 'd', f.e. 'drpSwitchB'.

4 Reactimation

5 External Links

6 Known users

search Hackage

  • YampaSynth - is a software synthesizer implemented in Haskell using Yampa. It contains a framework of sound generating and sound shaping modules (e.g. oscillator, amplifier, mixer, envelope generator, filter, etc.) and example applications.
  • Frag; a simple Quake 3 clone, using a very early version of Yampa called arrowized functional reactive programming (AFRP)
  • SpaceInvaders; a video game, demonstrating the usage of Yampa
  • cuboid; a small puzzle game
  • Haskelloids; asteroids clone
  • Nettle - Programming Network Routers
  • Euterpea - computer music development (also uses CCA)
  • YFrob; robot simulation
  • Haskanoid A breakout-like videogame with SDL graphics and sound that can optionally be controlled with a Wiimote.

search Github

7 Known forks