| instance (Num a) => Op_plus a MyInt where | i `plus` (MyInt b) = i + b
Remember that b is of type Int, but you also say that i is of any Num type. This clashes, since + requires both if its arguments to hve the same types. /K _______________________________________________ Haskell mailing list [EMAIL PROTECTED] http://www.haskell.org/mailman/listinfo/haskell
