45   struct Element {  struct
46    Element() : value(0), next(0), prev(0) {}  in Element()  function
47    Element(T v) : value(v), next(0), prev(0) {}  in Element()  argument
50    Element* next;  argument
51    Element* prev;  argument
82       elements_[i] = new Element(i);  in Initialize()
108     Element* element = elements_[element_id];  in Add()
125     Element* element = elements_[element_id];  in Move()
170         Element* split_el   = class_split_[class_id];  in SplitRefine()
177         Element* split_el   = class_split_[class_id];  in SplitRefine()
187       for (Element* el = classes_[new_class]; el; el = el->next)  in SplitRefine()
233   vector<Element*> elements_;
236   vector<Element*> classes_;
239   vector<Element*> class_split_;
258   typedef typename Partition<T>::Element Element;  typedef
284   const Element* element_;