[Haskell-cafe] Stream-fusion without the lists

[Henning Thielemann]

On Tue, 12 May 2009, Reiner Pope wrote:

> So, thoughts? Do people program with Streams directly? What have I not
> considered?

Yes, for signal processing I sometimes use my custom Streams data type 
that misses the Skip constructor since I do not use 'filter' functions:
    http://darcs.haskell.org/synthesizer/src/Synthesizer/State/Signal.hs

It has however the problem, that sharing is not possible. In order to 
get sharing, too, I introduced an arrow for causal processes:
    http://darcs.haskell.org/synthesizer/src-4/Synthesizer/Causal/Process.hs

(Note that Hudak et.al. have independently developed a theory on causal 
processes.)