std::multimap::erase
From cppreference.com
| void erase( iterator pos ); iterator erase( const_iterator pos ); |
(1) | (until C++11) (since C++11) |
| void erase( iterator first, iterator last ); iterator erase( const_iterator first, const_iterator last ); |
(2) | (until C++11) (since C++11) |
| size_type erase( const key_type& key ); |
(3) | |
Removes specified elements from the container.
1) Removes the element at
pos.2) Removes the elements in the range
[first; last).3) Removes all elements with the key value
keyReferences and iterators to the erased elements are invalidated. Other references and iterators are not affected.
Contents |
Parameters
| pos | - | iterator to the element to remove |
| first, last | - | range of elements to remove |
| key | - | key value of the elements to remove |
Return value
1-2) Iterator following the last removed element.
3) Number of elements removed.
Notes
All iterators (pos, first, last) must be valid and dereferenceable, that is, the end() iterator (which is valid, but is not dereferencable) cannot be used.
Complexity
Given an instance c of multimap:
1) Amortized constant
2) log(c.size()) + std::distance(first, last)
3) log(c.size()) + c.count(k)
See also
| clears the contents (public member function) | |
