pointer to std::vector of arbitrary type (or any other templated class)

Question

let\'s say i want to have a member variable for a pointer to std::vector but i do not want to specify what type of variable it stores. I want to access only those functions that

Answer 1

You could do this:

class vector_container_base
{
public:
    ~vector_container_base() {}

    virtual std::size_t size() const = 0;
};

template 
class vector_container :
    public vector_container_base
{
public:
    typedef std::vector vector_type;

    std::size_t size() const
    {
        return mVector.size();
    }

private:
    vector_type mVector;
};

And so on, but I doubt this is too useful in any real situation.