[Haskell-cafe] Tetris

Peter Verswyvelen bf3 at telenet.be
Wed Nov 21 07:56:26 EST 2007

Laurent Deniau wrote:
> Peter Verswyvelen wrote:
>> And you still need to think about where you have to introduce delays 
>> to avoid infinite loops?
> I don't see why, unless you want to have a memory or explicitly stop 
> the time which means it's a parameter of the transition as mention 
> above (but instantaneous transitions seems strange). So, the causality 
> of the transitions with a discrete time should not lead to infinite 
> loops. The time delay exists de facto.
I'm currently reading "FRP, Continued". Maybe I got confused by the text 
on page 56, which introduces a delay (noEvent --> addOrDelCTs) to avoid 
an infinite loop.

>> Since nobody replied yet on my question about the future of (A)FRP, 
>> maybe I can ask it again here? What is the future for FRP? Are other 
>> approaches better suitable for reactive applications?
> I missed your question, but it's an interesting question. I found very 
> interesting and instructive the paper of Hai Liu and Paul Hudak on the 
> problem of space leaks in FRP.

Yes that is a very interesting paper, but since I'm still trying to 
understand and use Yampa, I will have to re-read the paper.  It would be 
nice if Paul Hudak wrote a "Haskell HIGH School of Expression" book, 
explaining Yampa, because I really enjoyed the SOE book.

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