| Or I suppose, one could rephrase this question as why not
| simplify instance declarations to be:
|
|instance ToSet where
| toSet = Set.fromList
|
| And let the typechecker take care of figuring out what instance is
| being specified here?
That might be possible, but Haskell forces y
If you are not using them to prevent overlapping instances, then why
require instance decls at all? For example, why does
GHC require an instance decl here:
instance (Ord x)=>ToSet [] x where toSet = Set.fromList
But not here:
listToSet x = Set.fromList x
Or I suppose, one could rephrase th
Unfortunately, the context of an instance decl is not taken into account
when matching instance decls. Yes, it would make sense to do so, but
it'd make the system yet more complicated.
So Show (table item) overlaps with Show ([] item)
Overlap is checked lazily, so if you look for Show (MyTable t
