automatically deriving Functor Re[2]: [Haskell-cafe] automatically deriving Map and Filter on datatypes etc.

Bulat Ziganshin bulat.ziganshin at
Thu Jun 5 13:24:29 EDT 2008

Hello Neil,

Thursday, June 5, 2008, 8:54:51 PM, you wrote:

>>  PS Why isn't Functor derivable?

> Derive can do it:

> I believe that Twan (the author of Functor deriving in Derive) is
> trying to get this suggested for Haskell' as a proper deriving.

dear GHC developers, may be it's a good idea to add such facility to ghc?
[as one more H98 extension]

Best regards,
 Bulat                            mailto:Bulat.Ziganshin at

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