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std::packaged_task<R(Args...)>:: ~packaged_task

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std::packaged_task
~packaged_task ( ) ;

放弃共享状态并销毁存储的任务对象。

与 std::promise::~promise 类似，若共享状态在就绪前被放弃，将存储一个 std::future_error 异常，其错误码为 std::future_errc::broken_promise ）。

参数

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示例

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