c++ STL set difference

Question

Does the C++ STL set data structure have a set difference operator?

Answer 1

Yes, there is a set_difference function in the algorithms header.

Edits:

FYI, the set data structure is able to efficiently use that algorithm, as stated in its documentation. The algorithm also works not just on sets but on any pair of iterators over sorted collections.

As others have mentioned, this is an external algorithm, not a method. Presumably that's fine for your application.