gistfile1.cpp

template <typename T>
class Monitored {
 protected:
  T value;
  boolean dirty;
 public:
  Monitored<T>& operator=(const T source) {
   value = source;
   dirty = true;
  }
  
  operator T() {
   return value;
  }
  
  void write(Serial out);
};

void Monitored<int>::write(Serial out) {
 out.print(value);
}