AndChewGum

class MyStorage : Storate<float>
{
public:
...
  class Iterator {
    MyIterator(A::SomeClass* ptr)
    {
      ...
      bool operator==(const Iterator& itr)...
      bool operator!=(const Iterator& itr)...
      Iterator operator++()... -- post-incr
      Iterator operator++(int)... -- pre-incr
      ...
    }
  };
  
  Iterator begin();
  Iterator end();

...
};