[Haskell-cafe] ANN: Elerea, another FRP library

[Peter Verswyvelen]

If you're interested in the history of FRP (which I think isn't too bad) you
could read
- the book "Haskell School of Expression <http://www.haskell.org/soe/> ",
which contains a good introduction to classical FRP.
-  "The Yampa Arcade<http://haskell.cs.yale.edu/yale/papers/haskell-workshop03/yampa-arcade.pdf>"
paper, to get introduced to newer arrow-based FRP.

- FRAG,  <http://www.haskell.org/haskellwiki/Frag>a Quake-like game written
in Yampa

- "Genuinely Functional User
Interfaces<http://haskell.cs.yale.edu/yale/papers/haskellworkshop01/genuinely-functional-guis.pdf>"
to see how user interfaces could be made with arrow-based FRP

The newest FRP approaches are Reactive and Grapefruit, but these don't  have
a lot of examples yet.

For Reactive, besides the nice FRP tutorial that was mentioned, you might
want to look at David's Sankel
tutorials<http://netsuperbrain.com/blog/posts/introducing-reactive-behaviors/>


The examples for Grapefruit can be found in the darcs repos as mentioned
here <http://www.haskell.org/haskellwiki/Grapefruit>

2009/4/10 Joe Fredette <jfredett at gmail.com>

> I've seen alot of FRP libraries come up, and I'm always left with the
> question, "Where the heck are the FRP tutorials?"
>
> I'm talking about the bare-bones,
> "I've-never-even-touched-this-stuff-before" kind of tutorial. Something that
> explains the general theory and
> provides a few simple applications, maybe the start of a bigger one or
> something to mess around with and actually learn how to use FRP.
>
> The notion seems interesting, and perhaps I just haven't googled hard
> enough, but I can't really seem to find a good, newbie-level tutorial on it.
>
> Can anyone aim me in the right direction?
>
>
> Patai Gergely wrote:
>
>> Hi everyone,
>>
>> I'm pleased to announce Elerea, aka "Eventless reactivity", a
>> minimalistic FRP implementation that
>>
>> - comes with a convenient applicative interface (similar to Reactive)
>> - supports recursive definition of signals
>> - supports signals fed from outside by IO actions
>> - supports dynamism in the signal structure (I think ;)
>> - seems to play nice with resources, especially memory
>> - is based on some unsafePerformIO dark magic (that might easily break
>> depending on many factors)
>> - might have some parallelisation potential
>> - has absolutely no formal foundations, it's just the result of some
>> furious hacking over the last few days!
>>
>> There are working examples to show off the current capabilities of the
>> library, found in the separate elerea-examples package. Have fun playing
>> with it!
>>
>> Gergely
>>
>>
>>
>
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