Maciej Piechotka wrote:
I guess that the fact that: - It is costly.
No, it's not. Evaluating equality for "Bool -> Int" does not take significantly longer than for its isomorph "(Int,Int)". The latter has an Eq instance, so why doesn't the former?
-- Ashley Yakeley _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
