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std::packaged_task::get_future

STD：：包装[医]任务：：获取[医]未来

std::future get_future(​(since C++11)

返回future与*this...

get_future只能为每个用户调用一次packaged_task...

参数

%280%29

返回值

一个未来，它共享着与之相同的共享状态。*this...

例外

std::future_error在下列错误条件下：

  • 的调用已经检索到共享状态。get_future错误类别设置为future_already_retrieved...

  • *this没有共享状态。错误类别设置为no_state...

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