C++ Can you make an iterator of a template class?

Question

I'm working on a class project and for it for it we have to make a template class that is derived from vector and then be able to add and remove elements from it.

I thought I would make and iterator of the class since it is a vector I thought I should just be able to use "this" and create the iterator but "this" is a pointer so that didn't work.

If I try this:vector<T>::iterator p; I get plenty of errors so can I even do this or do I just need to find a different solution?

Answer 1

First of all, you should not inherit from std::vector as it does not have a virtual destructor. For more info see Thou shalt not inherit from std::vector.

If you want to use the iterator from std::vector you have to import it into your class' scope with the using directive.

#include <vector>

template < typename T >
class MyVector : std::vector<T>
{
public:
  using typename std::vector<T>::iterator;
};

int main()
{
  MyVector<double>::iterator p;
}