vector <template>, c++, class, adding to vector

Question

I am trying to create a class thats going to draw elements from a set of vectors (and also hold these vectors as containers inside the class), but i feel that when managing the vector having lots of functions like vectorOneAdd, vectorTwoAdd used in order to add elements to the vector is pointless. There must be a better way, thats why i am asking here, I heard you can use templates to do it, but i am not quite certain how. Assistance needed. Don't want to have lots of pointless code in.

Example of what I mean below:

class Cookie
{
std::vector<Chocolate> chocolateContainer;
std::vector<Sugar> sugarContainer;

void chocolateVectorAdd(Chocolate element);    // first function adding to one vector
void sugarVectorAdd(Sugar element);   // second function adding to another vector
}

Please use example code, thanks :)

Answer 1

having lots of functions like vectorOneAdd, vectorTwoAdd used in order to add elements to the vector is pointless. There must be a better way

There is:

class Cookie {
    std::vector<Chocolate> chocolateContainer;
    std::vector<Sugar> sugarContainer;

private:
    template<typename T>
    std::vector<T>& get_vector(const T&); // not implemented but particularized

    // write one of these for each vector:
    template<>
    std::vector<Chocolate>& get_vector(const Chocolate&) { return chocolateVector; }
    template<>
    std::vector<Sugar>& get_vector(const Sugar&) { return sugarVector; }

public:
    template<typename T>
    void add(T element) {
        auto& v = get_vector(element);
        v.push_back(std::move(element));
    }
};