On Dec 18, 2007 7:51 AM, Jules Bean <[EMAIL PROTECTED]> wrote:
> class Shape a where {
> intersect :: Shape b => a -> b -> Bool
> }
Shouldn't this be
class Shape a where
....whatever....
class (Shape a, Shape b) => Intersectable a b where
intersect :: a -> b -> Bool
With your definition I don't see how you could make it work, as you
would have to write a function that takes care of this shape
intersecting with any other shape, but this is exactly the problem the
classes should solve!
Cheers,
--
Felipe.
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