On Mon, Jan 19, 2009 at 3:58 AM, Patai Gergely <patai_gerg...@fastmail.fm>wrote:
> However, there are other type classes that are too general to assign > such concrete uses to. For instance, if a data structure can have more > than one meaningful (and useful) Functor or Monoid instance, 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. Luke
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