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  1. std::future - cppreference.com

    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, …

  2. std::future<T>::get - cppreference.com

    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). Right after calling this function, valid …

  3. std::future<T>::valid - cppreference.com

    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 (), …

  4. std::future_status - cppreference.com

    Mar 19, 2025 · Specifies state of a future as returned by wait_for and wait_until functions of std::future and std::shared_future. Constants

  5. What is a Future and how do I use it? - Stack Overflow

    Jul 21, 2020 · A future represents the result of an asynchronous operation, and can have two states: uncompleted or completed. Most likely, as you aren't doing this just for fun, you actually …

  6. std::future<T>::wait_for - cppreference.com

    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 …

  7. Standard library header <future> (C++11) - cppreference.com

    Nov 27, 2023 · future (const future &) = delete; ~future (); future & operator =(const future &) = delete; future & operator =(future &&) noexcept; shared_future <R> share () noexcept; // …

  8. C++: Use future.get with timeout and without blocking

    But you might want to have a queue of completed jobs to check, instead of a single future. This queue would only be consumed by your main thread and can be implemented with a non …

  9. std::promise - cppreference.com

    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 …

  10. Pandas replace and downcasting deprecation since version 2.2.0

    Nov 26, 2024 · To opt-in to the future behavior, set `pd.set_option('future.no_silent_downcasting', True)` 0 1 1 0 2 2 3 1 dtype: int64 If I understand the warning correctly, the object dtype is …