Function resize

src/fl/stl/vector.h:173–180

    }

    void resize(fl::size n) FL_NOEXCEPT {
        while (current_size < n) {
            push_back(T());
        }
        while (current_size > n) {
            pop_back();
        }
    }

    // Get the current size of the vector
    constexpr fl::size size() const FL_NOEXCEPT { return current_size; }