Method swap

test-app/runtime/src/main/cpp/robin_hood.h:1675–1679

Swaps everything between the two maps.

        // Swaps everything between the two maps.
        void swap(Table& o) {
            ROBIN_HOOD_TRACE(this)
            using std::swap;
            swap(o, *this);
        }

        // Clears all data, without resizing.
        void clear() {