void push_back( const T& value ); | (1) | |
void push_back( T&& value ); | (2) | (since C++11) |
Appends the given element value to the end of the container.
1) The new element is initialized as a copy of
value. 2)
value is moved into the new element.No iterators or references are invalidated.
Parameters
| value | - | the value of the element to append |
| Type requirements | ||
- T must meet the requirements of CopyInsertable in order to use overload (1). | ||
- T must meet the requirements of MoveInsertable in order to use overload (2). | ||
Return value
(none).
Complexity
Constant.
Exceptions
If an exception is thrown, this function has no effect (strong exception guarantee).
Example
#include <list>
#include <iostream>
#include <iomanip>
int main()
{
std::list<std::string> numbers;
numbers.push_back("abc");
std::string s = "def";
numbers.push_back(std::move(s));
std::cout << "list holds: ";
for (auto&& i : numbers) std::cout << std::quoted(i) << ' ';
std::cout << "\nMoved-from string holds " << std::quoted(s) << '\n';
}Output:
list holds: "abc" "def" Moved-from string holds ""
See also
| (C++11) | constructs an element in-place at the end (public member function) |
| inserts an element to the beginning (public member function) | |
| removes the last element (public member function) |
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