Question

I am strugling with the second function. I want it to be just like the first one but to accept List and vector

void draw__vec(vector<shape *> vs){

    for(int i=0; i< vs.size();i++){
        vs[i]->draw();
    }

}

template <typename T>
void draw_generic(T<shape *> c){

}

Answer 1

One way is to use iterators.

template <typename T>
void draw_generic(T c){
    typename T::iterator beg = c.begin(), end = c.end();

    while (beg != end) {
       (*beg)->draw();
       ++beg;
    }
}