Method compare

flow/IndexedSet.cpp:436–436

		Counter(const Counter& r) : value(r.value) { count++; }
		void operator=(const Counter& r) { value = r.value; }
		int compare(const Counter& r) const { return ::compare(value, r.value); }
		bool operator<(const Counter& r) const { return value < r.value; }
	};
	IndexedSet<Counter, NoMetric> mySet;