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std::packaged_task<R(Args...)>:: operator=

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std::packaged_task
packaged_task & operator = ( const packaged_task & ) = delete ;
(1) (自 C++11 起)
packaged_task & operator = ( packaged_task && rhs ) noexcept ;
(2) (自 C++11 起)
1) 复制赋值运算符被删除， std::packaged_task 仅支持移动操作。
2) 释放共享状态（如果存在），销毁先前持有的任务，并将 rhs 所拥有的共享状态和任务移动至 * this 。 rhs 将处于无共享状态且包含被移动任务的状态。

参数

rhs - 要移动来源的 std::packaged_task

示例

本节内容不完整
原因：缺少示例

缺陷报告

以下行为变更缺陷报告被追溯应用于先前发布的C++标准。

缺陷报告 应用于 发布时行为 正确行为
LWG 2067 C++11 拷贝赋值运算符的参数类型为 packaged_task& 添加了 const