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std::swap(std::promise)

STD：：交换%28 std：：承诺%29

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

专攻std::swap算法std::promise.交换lhs与...rhs.有效地打电话lhs.swap(rhs)...

参数

lhs, rhs-promises whose states to swap

返回值

%280%29

例外

noexcept规格：

noexcept

例

另见

swapswaps two promise objects (public member function)

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