std::swap(std::variant)
Defined in header <variant> | | |
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template <class... Types> void swap(variant<Types...>& lhs, variant<Types...>& rhs) noexcept(/* see below */); | | (since C++17) |
重载std::swap算法std::variant.有效地打电话lhs.swap(rhs)...
此重载只参与在下列情况下的重载解决方案：is_move_constructible_v<T_i>和is_swappable_v<T_i>对所有人都是正确的T_i在Types...
参数
lhs, rhs | - | variant objects whose values to swap |
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返回值
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例外
noexcept规格：
noexcept(noexcept(lhs.swap(rhs)))
例
另见
swap | swaps with another variant (public member function) |
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