sets of 64 bit non-negative integers (Word64) or integers (Int64), inspired by containers and constrained-monads
Like Data.IntSet, these are big-endian prefix trees. int64-set provides sets of Int64s in Data.Set.Int64, and word64-set provides sets of Word64s in Data.Set.Word64 along with an internal module Data.Set.Word64.Internal. The internal API is subject to breaking changes at any time for any reason, while the external modules' APIs will follow Haskell's Package Versioning Policy for release numbers greater than 0.0.0.0.