2024年3月12日 · The class template std::future provides a mechanism to access the result of asynchronous operations: An asynchronous operation (created via std::async, …

2016年3月2日 · 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 …

2020年5月1日 · The first part is easy: You can use annotations because annotations have existed since Python 3.0, you don't need to import anything from __future__ to use them What you're …

2024年10月28日 · The return type of std::async is std::future<V>, where V is: ... The call to std::async synchronizes with the call to f, and the completion of f is sequenced before making …

2024年2月22日 · 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 …

2023年10月23日 · 1) Default constructor. Constructs an empty shared future, that doesn't refer to a shared state, that is valid() == false. 2) Constructs a shared future that refers to the same …

2014年1月30日 · From java docs on Future.cancel () boolean cancel (boolean mayInterruptIfRunning) Attempts to cancel execution of this task. This attempt will fail if the …

2021年8月27日 · 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 …

2018年6月13日 · Here are some other differences: FutureBuilder has a single AsyncSnapshot that represents the current state of the Future, while StreamBuilder has multiple …

2020年8月2日 · 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 …