- \p bNew - \p true if the item has been inserted, \p false otherwise
- \p item - item of the map
- Returns <tt> std::pair<bool, bool> </tt> where \p first is true if operation is successfull,
+ Returns <tt> std::pair<bool, bool> </tt> where \p first is true if operation is successful,
\p second is true if new item has been added or \p false if the item with \p key
already is in the map.