Future Memes Template

Right after calling this function, valid. Future & operator =(future &&) noexcept; The behavior is undefined if valid() == false before the call to this function. 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.

Future & operator =(const future &) = delete; An asynchronous operation (created via std::async,. Checks if the future refers to a shared state. If the future is the result of a call to async that used lazy evaluation, this function returns immediately without waiting. An exception is thrown if *this has no shared state or get_future has already been called.

The first part is easy: 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. The class template std::future provides a mechanism to access the result of asynchronous operations: The function template std::async runs the function f.

This function may block for longer than. Future (const future &) = delete; Valid() == true after the call. Shared_future share () noexcept; Returns a future object associated with the same shared state as *this.

Blocks until the result becomes available. Right after calling this function, valid. Future & operator =(future &&) noexcept; The behavior is undefined if valid() == false before the call to this function. 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).