[Haskell-beginners] Non ghc specific FRP (using uhc js backend)

[Heinrich Apfelmus]

Nathan Hüsken wrote:
> 
> I am currently informing myself about FRP. Looking at the Elerea paper 
> (http://sgate.emt.bme.hu/documents/patai/publications/PataiWFLP2010.pdf) 
> I read that it is ghc specific because of mutable references.
> I am trying to use the js backend of uhc and that does not support this.
> I have tried to use other FRP libraries with uhc (by compiling a file 
> which does nothing but import the library) and all failed because of 
> something missing in Control.Concurrent.
> 
> So I am wondering: Is it a property FRP that it needs something like 
> mutable references for an efficient implementation.
> Is there a FRP library that can be used (or can be changed so that it 
> can be used) with uhc and its js backend?

I think that my reactive-banana library can be adapted to work on UHC. I 
will look into this. See issue

   https://github.com/HeinrichApfelmus/reactive-banana/issues/30


However, I would be very surprised if UHC doesn't have mutable 
variables, the reason is likely a GHC specific extension. Are you sure 
that UHC doesn't support IORef or MVar?


Best regards,
Heinrich Apfelmus

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