...one of the most highly
regarded and expertly designed C++ library projects in the
world. — Herb Sutter and Andrei
Move-assign an overlapped handle from another.
basic_overlapped_handle & operator=( basic_overlapped_handle && other);
This assignment operator moves a handle from one object to another.
The other overlapped handle object from which the move will occur.
Following the move, the moved-from object is in the same state as if constructed
overlapped_handle(const executor_type&) constructor.