Difference between revisions of "Yampa"

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(External Links: Added a link to the Yampy Cube source code and a link to video clips on YouTube; updated the link to Hai (Paul) Liu papers and slides)
(Added link to "Functional Reactive Virtual Reality"; removed link to "Dynamic, Interactive Virtual Environments" PDF, as this file disappeared)
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** code cleanup
** code cleanup
** [http://blog.edwardamsden.com/ Facts and Theories] blog by Edward Amsden
** [http://blog.edwardamsden.com/ Facts and Theories] blog by Edward Amsden
* [https://frvr.svn.sourceforge.net/svnroot/frvr/AFRP/trunk FRVR]
* [http://imve.informatik.uni-hamburg.de/projects/FRVR Functional Reactive Virtual Reality]
** restructuring of modules
** [https://frvr.svn.sourceforge.net/svnroot/frvr/AFRP/trunk FRVR source code]
** [http://imve.informatik.uni-hamburg.de/projects/DIVE DIVE project]
** [http://imve.informatik.uni-hamburg.de/projects/DIVE DIVE project]
** [http://imve.informatik.uni-hamburg.de/files/71-Blom-Diss-online.pdf Kristopher J. Blom - Dynamic, Interactive Virtual Environments] section 8.3

Revision as of 08:22, 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


Primitive signal functions

Yampa signal functions.png

(download original Image:Yampa signal functions.svg‎)


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'.


External Links

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

Known forks