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std::experi...hared_future(3) C++ Standard Libarystd::experi...hared_future(3) NAME std::experimental::shared_future::shared_future - std::experimen- tal::shared_future::shared_future Synopsis shared_future() noexcept; (1) shared_future( std::experimental::shared_future<T>&& f ) noexcept; (2) shared_future( const std::experimental::shared_future<T>& f ); (3) shared_future( std::experimental::future<std::experimen- tal::shared_future<T>> (4) && other ) noexcept; shared_future( std::experimental::future<T>&& f ) noexcept; (5) 1) Default constructor. Constructs an empty shared_future object that does not refer to a shared state. 2) Constructs a shared_future object, transferring the shared state held by f, if any. After construction, f.valid() is false. 3) Constructs a shared future that refers to the same shared state as f, if any. 4) Unwrapping constructor. Constructs a shared_future object from the shared state referred to by other, if any. If other.valid() == false prior to this call, the constructed shared_future object is empty. Otherwise, the resulting shared_future object becomes ready when one of the following happens: * other and other.get() are both ready. The value or exception from other.get() is stored in the shared state associated with the resulting shared_future object. * other is ready, but other.get() is invalid. An exception of type std::future_error with an error condition of std::fu- ture_errc::broken_promise is stored in the shared state associated with the resulting shared_future object. After this constructor returns, valid() is equal to the value of other.valid() prior to this call, and other.valid() == false. 5) Constructs a shared_future object, transferring the shared state held by f, if any. After construction, f.valid() is false. Parameters f - another future object to initialize with other - a std::experimental::future object to unwrap Example This section is incomplete Reason: no example Defect reports The following behavior-changing defect reports were applied retroac- tively to previously published C++ standards. DR Applied to Behavior as published Correct behavior LWG 2697 Concurrency TS behavior of unwrapping constructor is constructs an empty unclear with an invalid future fu- ture See also constructor constructs the future object (public member function of std::shared_future<T>) Category: * Todo no example http://cppreference.com 2024.06.10 std::experi...hared_future(3)
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