|  | 
            Move-assign a basic_random_access_file from
            another.
          
basic_random_access_file & operator=( basic_random_access_file && other);
This assignment operator moves a random-access file from one object to another.
                  The other basic_random_access_file
                  object from which the move will occur.
                
            Following the move, the moved-from object is in the same state as if
            constructed using the basic_random_access_file(const executor_type&)
            constructor.