Mar 12, 2024 · The class template std::future provides a mechanism to access the result of asynchronous operations: . An asynchronous operation (created via std::async, …

Feb 22, 2024 · 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).

Mar 2, 2016 · A future statement is a directive to the compiler that a particular module should be compiled using syntax or semantics that will be available in a specified future release of …

Mar 25, 2025 · In this case it does work. In general, it probably doesn't. I'm wondering how this break in backwards compatibility should in general be navigated. Perhaps installing a previous …

Oct 22, 2023 · Constructs a std::future with the shared state of other using move semantics. After construction, other. valid ( ) == false . 3) std::future is not CopyConstructible .

Oct 23, 2023 · Unlike std::future, which is only moveable (so only one instance can refer to any particular asynchronous result), std::shared_future is copyable and multiple shared future …

Oct 28, 2024 · Lazy evaluation is performed: . The first call to a non-timed wait function on the std::future that std::async returned to the caller will evaluate INVOKE (std:: move (g), std:: …

Aug 27, 2021 · If the future is the result of a call to std::async that used lazy evaluation, this function returns immediately without waiting. This function may block for longer than …

Oct 22, 2023 · Multiple std::shared_future objects may reference the same shared state, which is not possible with std::future. After calling share on a std::future , valid ( ) == false . Contents

Mar 19, 2025 · Enumerator Meaning deferred: the shared state contains a deferred function, so the result will be computed only when explicitly requested