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std::swap(std::pair)

From cppreference.com
< cpp‎ | utility‎ | pair
 
 
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std::swap
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Defined in header <utility>
(1)
template< class T1, class T2 >
void swap( std::pair<T1,T2>& x, std::pair<T1,T2>& y ) noexcept(/* see below */);
(since C++11)
(until C++20)
template< class T1, class T2 >

constexpr void swap( std::pair<T1,T2>& x, std::pair<T1,T2>& y )

    noexcept(/* see below */);
(since C++20)
template< class T1, class T2 >

constexpr void swap( const std::pair<T1,T2>& x, const std::pair<T1,T2>& y )

    noexcept(/* see below */);
(2) (since C++23)

Swaps the contents of x and y. Equivalent to x.swap(y).

1) This overload participates in overload resolution only if std::is_swappable_v<first_type> && std::is_swappable_v<second_type> is true.
2) This overload participates in overload resolution only if std::is_swappable_v<const first_type> && std::is_swappable_v<const second_type> is true.
(since C++17)

Contents

[edit] Parameters

x, y - pairs whose contents to swap

[edit] Return value

(none)

[edit] Exceptions

noexcept specification:  
noexcept(noexcept(x.swap(y)))

[edit] See also

swaps the values of two objects
(function template) [edit]
specializes the std::swap algorithm
(function template) [edit]