[Boost-users] [MultiIndex] insert with and without position hint

Hello, For some reason, the "hinted" version of insert() returns just an iterator, while the "unhinted" one returns pair: std::pair insert(const value_type& x); iterator insert(iterator position,const value_type& x); I've got a container with 1 ordered unique index. From one hand, I have to know whether the insertion was succesful, but from the other hand, 99% of the objects are inserted in their natural ascending order, so I use the hinted version: container_.insert(container_.end(), newObj); So my question is whether there's any performance benefit of the "hinted" version in such case, or I can move to the simple one w/o any performance loss? Thanks.