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std::shared_future::get(3) C++ Standard Libary std::shared_future::get(3) NAME std::shared_future::get - std::shared_future::get Synopsis Main template const T& get() const; (1) (since C++11) std::shared_future<T&> specializations T& get() const; (2) (since C++11) std::shared_future<void> specialization void get() const; (3) (since C++11) The get member function waits (by calling wait()) until the shared state is ready, then retrieves the value stored in the shared state (if any). If valid() is false before the call to this function, the behavior is undefined. Return value 1) A const reference to the value stored in the shared state. The behavior of accessing the value through this reference after the shared state has been destroyed is undefined. 2) The reference stored as value in the shared state. 3) (none) Exceptions If an exception was stored in the shared state referenced by the fu- ture (e.g. via a call to std::promise::set_exception()) then that exception will be thrown. Notes The C++ standard recommends the implementations to detect the case when valid() is false before the call and throw a std::future_error with an error condition of std::future_errc::no_state. Example This section is incomplete Reason: no example See also valid checks if the future has a shared state (public member function) Category: * Todo no example http://cppreference.com 2024.06.10 std::shared_future::get(3)
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