Dnia pon 14. lipca 2003 10:18, Graham Klyne napisał:
> I must be missing something... isn't the effect achieved by:
> class (Add a, Subtract a, FromInteger a, Eq a, Multiply a, ...) => Num a
> ?
It doesn't provide instances of Num for anything which is already an instance
of the other classes. And in Haskell 98 they must be defined separately for
each type, instance (...) => Num a doesn't work.
--
__("< Marcin Kowalczyk
\__/ [EMAIL PROTECTED]
^^ http://qrnik.knm.org.pl/~qrczak/
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