Method swap

dlib/smart_pointers/shared_ptr_thread_safe.h:356–360

        ) const { return get() != 0; }  

        void swap(shared_ptr_thread_safe& b)
        {
            std::swap(data, b.data);
            std::swap(shared_node, b.shared_node);
        }

        template <typename D>
        D* _get_deleter(