[Haskell-cafe] Fancy REPL

[Tom Murphy]

Does this mean we're going to see music FRP examples soon?!

amindfv / Tom
On Feb 9, 2012 2:17 PM, "Heinrich Apfelmus" <apfelmus at quantentunnel.de>
wrote:

> Dear list,
>
> the  Show  class is extremely useful for exploring Haskell in a terminal,
> but sometimes, I just want something fancier. For instance, I'm currently
> dabbling with sound generation and it is only natural that I want to hear
> the sound instead of seeing a textual representation. Another example would
> be graphics, that are simply drawn on screen whenever you evaluate their
> value.
>
> Of course, this is simple to implement with a class
>
>    class Demonstrable a where
>        demo :: a -> IO ()
>
>    instance Demonstrable Sound where demo = play
>    instance Demonstrable Sound where demo = draw
>    instance Demonstrable GUI   where demo = run
>    etc.
>
>
> However, I don't want to reinvent the wheel, small as it may be, hence my
> question: is there a package on hackage that already defines a class
> similar to  Demonstrable ? Or any other projects in this direction, like,
> say, a fancy REPL built on wxHaskell?
>
>
> Best regards,
> Heinrich Apfelmus
>
> --
> http://apfelmus.nfshost.com
>
>
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