Deriviable type classes

[José Pedro Magalhães]

Hi,

2011/2/9 Simon Peyton-Jones <simonpj at microsoft.com>

> Friends
>
> Just a heads-up.  Pedro is working on implementing "Generic Defaults", as
> described in his Haskell Symposium 2010 paper
> www.dreixel.net/research/pdf/gdmh_nocolor.pdf
>
> It will replace (and improve on) the "Derivable type classes" stuff in GHC
> at the moment, which was originally presented in a paper of that title that
> Ralf and I wrote in the 2000 Haskell workshop
> http://research.microsoft.com/en-us/um/people/simonpj/papers/derive.htm.
>
> The "Derivable type class" extension is barely used, I believe, and isn't
> even documented in the manual.


Isn't it this?:
http://www.haskell.org/ghc/docs/latest/html/users_guide/generic-classes.html

But anyway, I can't remember seeing any use of it.


Cheers,
Pedro
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