[Haskell-cafe] Factoring into type classes

Antoine Latter aslatter at gmail.com
Mon Jan 19 08:31:35 EST 2009

2009/1/19 Luke Palmer <lrpalmer at gmail.com>:
> As a side curiosity, I would love to see an example of any data structure
> which has more than one Functor instance.  Especially those which have more
> than one useful functor instance.

(,)  ?


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