Getters / Setters with std :: vector<> .push_back（...）

由于某些原因，这不工作。它编译文件，但使用getter时，没有任何项目添加到此向量。

For some reason this doesn't work. It compiles file, but no items are added to this vector when using a getter.

EG

class class_name {

    public:
        inline std::vector<int> get_numbers() { return m_numbers; }    

    private:
        std::vector<int> m_numbers;
}

....

{
    class_name number_list;
    number_list.get_numbers().push_back(1);
}

如果我直接这样做（m_numbers.push_back（1）但是如果我用getter来拉出它，它不会添加任何东西。

If I do it directly (m_numbers.push_back(1)) it works, but if I pull it out with a getter it won't add anything.