On Fri, 16 Jul 2010, Paul L wrote:
Does anybody know why the type families only supports equality test like a ~ b, but not its negation?
I would suggest that type equality is actually used for type inference, whereas proof of type inequality would have no consequence (that I can think of) for the compiler. Friendly, --Lane _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
