16 Jan
2001
16 Jan
'01
6:38 p.m.
Magnus Carlsson wrote:
You can use overloading for the definition of theValue instead:
class TheValue a where theValue :: a -> Maybe Int
instance TheValue Base where theValue _ = Nothing instance TheValue Derived where theValue x = Just (x.value)
... or rather, you will be able to use overloading when the new version of O'Hugs is released in a few days :-) -- Johan