DavidA wrote:
Twan van Laarhoven twanvl at gmail.com writes:
The solution is to use a dummy parameter:
class IntegerType a where
value :: a - Integer
Thanks to all respondents for this suggestion. That works great.
I prefer a slightly elaborate way,
newtype Mark n t = Mark t
Twan van Laarhoven twanvl at gmail.com writes:
The solution is to use a dummy parameter:
class IntegerType a where
value :: a - Integer
And call it like:
f = value (undefined :: Two)
So for instance:
instance IntegerType d = Show (QF d) where
show (QF a b) = show a ++
