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

Joe Fredette jfredett at gmail.com
Fri Apr 10 13:03:15 EDT 2009

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 

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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