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,.
Aug 27, 2021 · Checks if the future refers to a shared state.
This is the case only for futures that were not default-constructed or moved from (i.e.
returned by std::promise::get_future (),.
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.
Nov 27, 2023 · future (const future &) = delete; ~future (); future & operator =(const future &) = delete; future & operator =(future &&) noexcept; shared_future <R> share () noexcept; // retrieving the value.
Aug 27, 2021 · Blocks until the result becomes available.
valid() == true after the call.
The behavior is undefined if valid() == false before the call to this function.
Jan 29, 2024 · FutureWarning: Downcasting object dtype arrays on .fillna, .ffill, .bfill is deprecated and will change in a future version.
Call result.infer_objects (copy=False) instead.
Aug 2, 2020 · wait_until waits for a result to become available.
It blocks until specified timeout_time has been reached or the result becomes available, whichever comes first.
The return value indicates why.
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.
