> The Animas fork is something I did, to fix up some annoyances in > Yampa. It's otherwise the same.
What are the annoyances you are talking about? Are you describing somewhere why you needed to fork Yampa? (Documentation maybe? I saw you added to Animas the documentation on the functions that Yampa missed. ) 2011/7/15 Edward Amsden <eca7...@cs.rit.edu> > On Fri, Jul 15, 2011 at 12:56 AM, Jason Dagit <dag...@gmail.com> wrote: > > On Thu, Jul 14, 2011 at 5:04 PM, Ertugrul Soeylemez <e...@ertes.de> wrote: > >> Hello all, > > > >> > >> I really like the way Animas (fork of Yampa) represents reactive > >> systems, and I would love to write some of my simulations using it. > Hi. > > The Animas fork is something I did, to fix up some annoyances in > Yampa. It's otherwise the same. > > >> Unfortunately most of what I want to do requires dynamic systems, which > >> can be boiled down to me believing to need an ArrowChoice instance for > >> the SF arrow, because I have to choose between different signal paths > >> depending on the input signal or events. > >> > >> Animas appears to be only suitable for robot-like systems with specific, > >> predefined actors. > >> > >> Is there anything I can do about it? Is it difficult to write the > >> ArrowChoice instance? > > Recall that signals in Animas/Yampa are conceptually continuous, which > means that an ArrowChoice instance would need to make a choice at > every instant. This would expose the underlying sample rate. So, no, > ArrowChoice doesn't conceptually fit in Animas/Yampa. > > >> Or is there a different solution, which I > >> overlooked? > > If I understand the thesis about the Frag game correctly it uses > > rSwitch, or rpSwitch, to make a dynamic switch: > > http://www.haskell.org/haskellwiki/Yampa/rSwitch > > http://haskell.org/haskellwiki/Frag > The switching combinators are the correct solution for dynamic systems. > > -- > Edward Amsden > Student > Computer Science > Rochester Institute of Technology > www.edwardamsden.com > > _______________________________________________ > Haskell-Cafe mailing list > Haskell-Cafe@haskell.org > http://www.haskell.org/mailman/listinfo/haskell-cafe >
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