ObservableClock.cc (C++).
- By Robert C. Martin
- August 16, 2001
Uncle Bob's Agile Development Corner
OBSERVER—Evolving into a pattern, Part 2
by Robert C. Martin
Listing 3. ObservableClock.cc (C++).
class ObservableClock : public Clock, public TimeSource
{
public:
virtual void tic()
{
Clock::tic();
TimeSource::notify( getHours(),
getMinutes(),
getSeconds());
}
virtual void setTime(int hours, int minutes, int seconds)
{
Clock::setTime(hours, minutes, seconds);
TimeSource::notify(hours, minutes, seconds);
}
};
About the Author
Robert C. Martin is president of Object Mentor Inc., a firm that offers high-level, OO software design consulting, training, and development services. He is the author of Designing Object Oriented C++ Applications Using the Booch Method. He can be contacted at [email protected].