A future is like the objects from javascript. · if the future is the result of a call to std::async that used lazy evaluation, this function returns immediately without waiting. In the above-mentioned case, while waiting on network i/o, a function … · return value a std::experimental::future object associated with the shared state created by this object. But all i did was just passing … It is like a placeholder for a value that will be materialized in the future. It allows use of the new features on a per … · the first part is easy: · 2 future. cancel () will cancel any queued task or will call thread. interrupt () on your thread if already running. · 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). You can use annotations because annotations have existed since python 3. 0, you dont need to import anything from future to use them what youre … · the future statement is intended to ease migration to future versions of python that introduce incompatible changes to the language. · specifies state of a future as returned by wait_for and wait_until functions of std::future and std::shared_future. · the class template std::future provides a mechanism to access the result of asynchronous operations: This function may block for longer than … Right after calling this function, valid … No associated state aborted (core dumped) this exception is supposed to be thrown if you call get_future () twice on the same promise. An asynchronous operation (created via std::async, … You need to interrupt your code its your codes responsibility is to be … Valid()==true for the returned object.