void clear() noexcept;
Erases all elements from the container. After this call, size() returns zero.
Invalidates any references, pointers, or iterators referring to contained elements. May also invalidate past-the-end iterators.
Linear in the size of the container, i.e., the number of elements.
The following behavior-changing defect reports were applied retroactively to previously published C++ standards.
|DR||Applied to||Behavior as published||Correct behavior|
|LWG 2550||C++11||for unordered associative containers, unclear if complexity is linear in the number of elements or buckets||clarified that it's linear in the number of elements|
| erases elements |
(public member function)