std::pair<iterator,iterator> equal_range( const Key& key );
std::pair<const_iterator,const_iterator> equal_range( const Key& key ) const;
Returns a range containing all elements with key
key in the container. The range is defined by two iterators, the first pointing to the first element of the wanted range and the second pointing past the last element of the range.
|key||-||key value to compare the elements to|
Average case constant, worst case linear in the size of the container.
| finds element with specific key |
(public member function)