Question

With the following implementation, I’m attempting to answer my question:

class wlist
{
private:
    std::list<void*> m_list;

public:

    unsigned int size () { return m_list.size(); }
    bool empty () { return m_list.empty(); }
    void pop_back () { m_list.pop_back(); }
    void pop_front () { m_list.pop_front(); }
};

class qwertyWrap : public wlist
{
public:
    int getNumber() { ptr->getNumber(); }
    void setNumber(int x) { ptr->setNumber(x); }

private:
    qwerty* ptr;
};

class qwerty
{
public:
    int getNumber();
    void setNumber(int x);
};


class asdf
{
public:
    int getElement();
    void setElement(int x);
private:
    /* Question */
    /* Can the following declaration be substituted by qwertyWrap keyboard ??? */
    list<qwerty*> keyboard; or qwertyWrap keyboard;
};

Question:
Can I substitute “qwertyWrap keyboard” in place of “list keyboard” in class asdf and achieve the same functionality as that of a STL list????

Answer 1

Answer to my initial question:
/* Question /
/ Can the following declaration be substituted by qwertyWrap keyboard ??? */
list keyboard; or qwertyWrap keyboard;

qwertyWrap keyboard can be substituted for list keyboard and still maintain the std::list functionality. I’ve also implemented this solution sometime back.