Code Fragment: HashEntry

  enum Status { EMPTY, USED, FREE };			// table entry status

  struct HashEntry : public Item<Key, Element> {	// a hash table entry
    Status status;					// entry status
    HashEntry(const Key& k = Key(),			// constructor
	const Element& e = Element(),
	Status st = EMPTY) : Item<Key,Element>(k, e), status(st) { }
  };
  typedef HashEntry* EntryPtr;				// pointer to an entry