Rationale:

Duplicate: 130

Proposed resolution:

Informally: The table of associative container requirements, and the relevant template classes, should return an iterator designating the first element beyond the erased subrange.

map/multimap/set/multiset have:

    void erase(iterator);
    void erase(iterator, iterator);

But there's no good reason why these can't return an iterator, as for vector/deque/list:

    iterator erase(iterator);
    iterator erase(iterator, iterator);