Re: [Haskell-cafe] Set (Set a) like container - but more efficient?

Marc Weber writes:

Does a Set (Set a) like container exist [...]

what do you want to do with this? In particular, what methods of the outer set are you planning to use? Do you perhaps want a disjoint-set representation? http://stackoverflow.com/questions/15691696/equivalence-classes-and-union-fi... - J.W.