Method erase

src/test/prevector_tests.cpp:115–119

    }

    void erase(Size position) {
        real_vector.erase(real_vector.begin() + position);
        pre_vector.erase(pre_vector.begin() + position);
        test();
    }

    void erase(Size first, Size last) {
        real_vector.erase(real_vector.begin() + first, real_vector.begin() + last);