Method move

src/test/prevector_tests.cpp:174–179

    }

    void move() {
        real_vector = std::move(real_vector_alt);
        real_vector_alt.clear();
        pre_vector = std::move(pre_vector_alt);
        pre_vector_alt.clear();
    }

    void copy() {
        real_vector = real_vector_alt;