std::vector skeleton

my_vector.h

// implement std::vector
template <typename T>
class Vector
{
public:

     // to keep it simpler, iterators are just T*
    typedef T* iterator;
    typedef T* reverse_iterator;

    Vector(size_t initial_size = 0);
    ~Vector();

    size_t size() const;
    size_t capacity() const;

    T& at(size_t index);
    T& operator[](size_t index);

    iterator begin();
    iterator end();

    iterator rbegin();
    iterator rend();

    T& front();
    T& back();

    bool empty() const;
    void push_back(const T& value );
    void pop_back();

    void clear();
    void resize (size_t new_size);
    void reserve (size_t new_size);

    iterator insert( iterator pos, const T& value );
    iterator erase( iterator pos );
    iterator erase( iterator first, iterator last );
};