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std::swap(std::pair)

std：：交换%28 std：：偶数%29

Defined in header ​​
template< class T1, class T2 > void swap( pair<T1,T2>& lhs, pair<T1,T2>& rhs ​(since C++11)

交换内容lhs和rhs相当于lhs.swap(rhs)...

参数

lhs, rhs-pairs whose contents to swap

返回值

%280%29

例外

noexcept规格：

noexcept(noexcept(lhs.swap(rhs)))

另见

swapswaps the values of two objects (function template)

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