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If the future is the result of a call to std::async that used lazy evaluation, this function returns immediately without waiting. The behavior is undefined if valid () is false before the call to this function, or clock does not meet the clock requirements. Future & operator =(future &&) noexcept; 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 importing if you do from __future__ import annotations is postponed annotations. 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. The first part is easy: Right after calling this function, valid () is false.

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Returned by std::promise::get_future (), std::packaged_task::get_future () or std::async ()) until the first time get () or share () is called. The function template std::async runs the function f asynchronously (potentially in a separate thread which might be a part of a thread pool) and returns a std::future that will eventually hold the result of that function call. The class template std::future provides a mechanism to access the result of asynchronous operations: The first part is easy:

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The standard recommends that a steady clock is used to measure the duration. // retrieving the value /* see description */ get (); Valid() == true after the call. 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..

Blocks until the result becomes available. If the future is the result of a call to std::async that used lazy evaluation, this function returns immediately without waiting. Future & operator =(future &&) noexcept; The standard recommends that a steady clock is used to measure the duration. The first part is.

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If valid () is false before the call to this function, the behavior is undefined. Future (const future &) = delete; 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). If the future.

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The standard recommends that a steady clock is used to measure the duration. An exception is thrown if *this has no shared state or get_future has already been called. Future & operator =(const future &) = delete; This function may block for longer than timeout_duration due to scheduling or resource.

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The function template std::async runs the function f asynchronously (potentially in a separate thread which might be a part of a thread pool) and returns a std::future that will eventually hold the result of that function call. Future (const future &) = delete; Shared_future share () noexcept; Valid() == true.

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).

The first part is easy: The function template std::async runs the function f asynchronously (potentially in a separate thread which might be a part of a thread pool) and returns a std::future that will eventually hold the result of that function call. If valid () is false before the call to this function, the behavior is undefined. The creator of the asynchronous operation can then use a variety of.

The Standard Recommends That A Steady Clock Is Used To Measure The Duration.

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. The behavior is undefined if valid () is false before the call to this function, or clock does not meet the clock requirements. Shared_future share () noexcept; Blocks until the result becomes available.

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 Importing If You Do From __Future__ Import Annotations Is Postponed Annotations.

Future & operator =(const future &) = delete; Returned by std::promise::get_future (), std::packaged_task::get_future () or std::async ()) until the first time get () or share () is called. The postponed annotations feature means that you can use something in an annotation even if it hasn't been. Checks if the future refers to a shared state.

The Behavior Is Undefined If Valid() == False Before The Call To This Function.

Valid() == true after the call. Future & operator =(future &&) noexcept; An exception is thrown if *this has no shared state or get_future has already been called. Future (const future &) = delete;