Jules Bean wrote:
Peter Padawitz wrote:
Functional dependencies don't work in my case. Actually, I don't see
why they should.
Ah well, it's cruel to say that without explaining to us why!
Cause I don't see why the instantiation conflicts pointed out by others
would vanish then.
I'm not sure why a complete cyclic dep a -> b -> c -> d -> a isn't
what you want.
What seems to be needed here is a type class construct with a kind of
record parameter so that instance conflicts cannot occur.
I'm not entirely sure what you intend to mean by this, but if you mean
what I guess you mean:
class Java (a,b,c,d) where ....
Yeah... but ghc accepts only type variables here, not arbitrary
polymorphic types.
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