Why don't we have "deriving Functor" in Haskell?

Functor is in Prelude, so it could be known to the compiler.
I am aware that one does not write modular interpreter every day,
but I think that turning a type constructor into functor is something
which is done quite often. 

Am I missing something or is it just not important enough?

Viktor Kuncak
[EMAIL PROTECTED], [EMAIL PROTECTED]
Viktor Kuncak  ([EMAIL PROTECTED],   [EMAIL PROTECTED])


Reply via email to