15 Nov
2004
15 Nov
'04
11:50 a.m.
Keean Schupke wrote:
Do you need a language extension at all? You can certainly do it with the existing extensions!
data ShowDict a instance Show (ShowDict a) where showsPrec _ (ShowDict a) = ...
I don't understand. How does that help you to, for example, use a function which requires Show Int but (say) substitute the standard function for which which shows in hexadecimal?