std::pair::swap
From cppreference.com
void swap(pair& other); |
(since C++11) | |
Swaps first
with other.first
and second
with other.second
.
This function does not participate in overload resolution unless std::is_swappable_v<first_type> && std::is_swappable_v<second_type> |
(since C++17) |
Parameters
other | - | pair of values to swap |
Return value
(none)
Exceptions
Example
Run this code
#include <iostream> #include <utility> #include <string> int main() { std::pair<int, std::string> p1, p2; p1 = std::make_pair(10, "test"); p2.swap(p1); std::cout << "(" << p2.first << ", " << p2.second << ")\n"; }
Output:
(10, test)
See also
(until C++17) | |
noexcept specification:
noexcept( std::is_nothrow_swappable<first_type>::value) && |
(since C++17) |
swaps the values of two objects (function template) |