Question

So I try:

class data_ppp {
public:
    template <class T>
    virtual boost::shared_ptr<T> getData()
    {
        return boost::shared_ptr<T>(new T());
    }
};

class data_child : public data_ppp {
public:
    template<>
    getData<std::vector<int>>();
};

but cant get desired effect – I want to have in class data_child getData function that would only return boost::shared_ptr<std::vector<int>>. How to do such thing?

Answer 1

The only solution to your problem that I see now is:

class data_ppp
{
public:
    template<class T>
    std::shared_ptr<T> getData()
    { return std::shared_ptr<T>(new T()); }
};

class data_child : public data_ppp
{
public:
    std::shared_ptr<int> getData() 
    { return data_ppp::getData<int>(); }
};

Usage:

data_child dc;
dc.getData();
//dc.getData<float>(); // compilation error