Insert Iterator Adaptors

template <class C>
class PushBackIterator
{
public:
  explicit PushBackIterator (C& x) : Cptr(&x) {}
  PushBackIterator <C>& operator = (const typename C::value_type& t)
  {
    Cptr -> PushBack(t);
    return *this;
  }
  PushBackIterator<C>& operator *  ()    {return *this;}
  PushBackIterator<C>& operator ++ ()    {return *this;}
  PushBackIterator<C>& operator ++ (int) {return *this;}

protected:
  C* Cptr_;
};

// useage:

List < char > L;                            // declare a list
PushBackIterator < List < char > > Litr(L); // declare a PushBackIterator for L
// yada dada
g_copy(V.Begin(), V.End(), Litr);   // inserts entire contents of V to back of L