Best Future Transportation Powerpoint Background For Presentation 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. the creator of the asynchronous operation can then use a variety of methods to query, wait for, or extract a value from the std. 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 python. the future statement is intended to ease migration to future versions of python that introduce incompatible changes to the language. it allows use of the new features on a per module basis before the release in.
Best Free Transportation Google Slides Themes And Powerpoint Templates A future is like the objects from javascript. it is like a placeholder for a value that will be materialized in the future. in the above mentioned case, while waiting on network i o, a function can give us a container, a promise that it will fill the container with the value when the operation completes. 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 (), 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. 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. the standard recommends that a steady clock is used to measure the duration.
Best Free Transportation Google Slides Themes And Powerpoint Templates 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 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. the standard recommends that a steady clock is used to measure the duration. 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 () is false. if valid () is false before the call to this function, the behavior is undefined. For vs. linq performance vs. future asked 12 years, 5 months ago modified 5 years, 5 months ago viewed 53k times.
Best Free Transportation Google Slides Themes And Powerpoint Templates 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 () is false. if valid () is false before the call to this function, the behavior is undefined. For vs. linq performance vs. future asked 12 years, 5 months ago modified 5 years, 5 months ago viewed 53k times.
Best Free Transportation Google Slides Themes And Powerpoint Templates
Best Free Transportation Google Slides Themes And Powerpoint Templates
Best Free Transportation Google Slides Themes And Powerpoint Templates