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, std::packaged_task, or std::promise) can provide a std::future object to the creator of that asynchronous operation.

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).

Aug 27, 2021 · It is valid to move from a future object for which valid() is false. Contents . 1 Parameters; 2 Return value;

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 timeout_duration due to scheduling or resource contention delays.

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 objects may refer to the same shared state. Access to the same shared state from multiple threads is safe if each thread does it through its own copy of a shared_future object.

Oct 23, 2023 · The promise is the "push" end of the promise-future communication channel: the operation that stores a value in the shared state synchronizes-with (as defined in std::memory_order) the successful return from any function that is waiting on the shared state (such as std::future::get).

Oct 23, 2024 · Do I have to add specific megascans to my library to have future access to them or will I keep the standard licenses just by hitting the first “claim” button? 4 Likes Urooj.shahzadi (Shahzadi Urooj) October 23, 2024, 9:01am

Jul 9, 2024 · Name Explanation deferred: the shared state contains a deferred function, so the result will be computed only when explicitly requested

Oct 9, 2023 · an unwrapping constructor from future<future<T>>; a member function is_ready to query whether the associated shared state is ready; and a member function then to attach a continuation to the future. However, there is no interoperation …

Feb 26, 2011 · To ensure future-proofing your query for SQL Server 2008 and higher, Date should be escaped because it's a reserved word in later versions. Bear in mind that the dates without times take midnight as their defaults, so you may not have the correct value there.