bool ExtStorage = false, class GT = GraphTraits<GraphT> >
class df_iterator : public forward_iterator<typename GT::NodeType, ptrdiff_t>,
public df_iterator_storage<SetType, ExtStorage> {
bool ExtStorage = false, class GT = GraphTraits<GraphT> >
class df_iterator : public forward_iterator<typename GT::NodeType, ptrdiff_t>,
public df_iterator_storage<SetType, ExtStorage> {