> Doesn't Ada have constrained number types which have similar behaviour?
Yes. Just for comparison, the behaviour of the Ada number is to throw an exception at runtime if a number overflows its bounds. If these checks can be eliminated statically, then they are. If an operation will always give a runtime error then this is given as a warning at compile time. Thanks Neil _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe