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std::future<T>:: future

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std::future
future ( ) noexcept ;
(1) (自 C++11 起)
future ( future && other ) noexcept ;
(2) (自 C++11 起)
future ( const future & other ) = delete ;
(3) (自 C++11 起)

构造一个 std::future 对象。

1) 默认构造函数。构造一个无共享状态的 std::future 。构造后， valid ( ) == false 。
2) 移动构造函数。使用移动语义构造一个具有 other 共享状态的 std::future 。构造完成后， other. valid ( ) == false 。
3) std::future 不满足 CopyConstructible 要求。

参数

其他 - 用于从其他 std::future 获取共享状态的另一个对象