std::vector<T,Allocator>::clear (3) - Linux Manuals
std::vector<T,Allocator>::clear: std::vector<T,Allocator>::clear
Command to display std::vector<T,Allocator>::clear manual in Linux: $ man 3 std::vector<T,Allocator>::clear
NAME
std::vector<T,Allocator>::clear - std::vector<T,Allocator>::clear
Synopsis
void clear(); (until C++11)
void clear() noexcept; (since C++11)
Erases all elements from the container. After this call, size() returns zero.
Invalidates any references, pointers, or iterators referring to contained elements. Any past-the-end iterators are also invalidated.
Leaves the capacity() of the vector unchanged (note: the standard's restriction on the changes to capacity is in the specification of vector::reserve, see [1])
Parameters
(none)
Return value
(none)
Complexity
Linear in the size of the container, i.e., the number of elements.
Defect reports
The following behavior-changing defect reports were applied retroactively to previously published C++ standards.
DR Applied to Behavior as published Correct behavior
LWG_2231 C++11 complexity guarantee was mistakenly omitted in C++11 complexity reaffirmed as linear
See also
erases elements
erase (public member function)
Pages related to std::vector<T,Allocator>::clear
- std::vector<T,Allocator>::capacity (3) - std::vector<T,Allocator>::capacity
- std::vector<T,Allocator>::assign (3) - std::vector<T,Allocator>::assign
- std::vector<T,Allocator>::at (3) - std::vector<T,Allocator>::at
- std::vector<T,Allocator>::back (3) - std::vector<T,Allocator>::back
- std::vector<T,Allocator>::begin,std::vector<T,Allocator>::cbegin (3) - std::vector<T,Allocator>::begin,std::vector<T,Allocator>::cbegin
- std::vector<T,Allocator>::data (3) - std::vector<T,Allocator>::data
- std::vector<T,Allocator>::emplace (3) - std::vector<T,Allocator>::emplace
- std::vector<T,Allocator>::emplace_back (3) - std::vector<T,Allocator>::emplace_back
- std::vector<T,Allocator>::empty (3) - std::vector<T,Allocator>::empty
- std::vector<T,Allocator>::end,std::vector<T,Allocator>::cend (3) - std::vector<T,Allocator>::end,std::vector<T,Allocator>::cend
- std::vector<T,Allocator>::erase (3) - std::vector<T,Allocator>::erase
- std::vector<T,Allocator>::front (3) - std::vector<T,Allocator>::front
- std::vector<T,Allocator>::get_allocator (3) - std::vector<T,Allocator>::get_allocator
- std::vector<T,Allocator>::insert (3) - std::vector<T,Allocator>::insert
- std::vector<T,Allocator>::max_size (3) - std::vector<T,Allocator>::max_size
- std::vector<T,Allocator>::operator= (3) - std::vector<T,Allocator>::operator=
- std::vector<T,Allocator>::operator[] (3) - std::vector<T,Allocator>::operator[]
- std::vector<T,Allocator>::pop_back (3) - std::vector<T,Allocator>::pop_back
- std::vector<T,Allocator>::push_back (3) - std::vector<T,Allocator>::push_back
- std::vector<T,Allocator>::rbegin,std::vector<T,Allocator>::crbegin (3) - std::vector<T,Allocator>::rbegin,std::vector<T,Allocator>::crbegin
- std::vector<T,Allocator>::rend,std::vector<T,Allocator>::crend (3) - std::vector<T,Allocator>::rend,std::vector<T,Allocator>::crend
- std::vector<T,Allocator>::reserve (3) - std::vector<T,Allocator>::reserve
- std::vector<T,Allocator>::resize (3) - std::vector<T,Allocator>::resize
- std::vector<T,Allocator>::shrink_to_fit (3) - std::vector<T,Allocator>::shrink_to_fit
- std::vector<T,Allocator>::size (3) - std::vector<T,Allocator>::size
- std::vector<T,Allocator>::swap (3) - std::vector<T,Allocator>::swap
- std::vector<T,Allocator>::vector (3) - std::vector<T,Allocator>::vector
- std::vector<T,Allocator>::~vector (3) - std::vector<T,Allocator>::~vector
- std::vector<bool,Allocator>::flip (3) - std::vector<bool,Allocator>::flip