Set and IntSet offer union, intersection, difference, but no symmetricDifference. I don't see why it should be left out. Set even offers disjointUnion.
See also: #732. This is about adding a generalized merge, but surely symmetricDifference deserves to exist without or without such a merge function.
If Set and IntSet get these, it would be consistent to add them for Map and IntMap too.
SetandIntSetofferunion,intersection,difference, but nosymmetricDifference. I don't see why it should be left out.Seteven offersdisjointUnion.See also: #732. This is about adding a generalized merge, but surely
symmetricDifferencedeserves to exist without or without such a merge function.If
SetandIntSetget these, it would be consistent to add them forMapandIntMaptoo.