ROBERT C. MARTIN is President of Object Mentor Inc. Martin and his team of software consultants use Object-Oriented Design, Patterns, UML, Agile Methodologies, and eXtreme Programming with worldwide clients. He is the author of the best-selling book Designing Object-Oriented C++ Applications Using the Booch Method (Prentice Hall, 1995), Chief Editor of, Pattern Languages of Program Design 3 (Addison Wesley, 1997), Editor of, More C++ Gems (Cambridge, 1999), and co-author of XP in Practice, with James Newkirk (Addison-Wesley, 2001). He was Editor in Chief of the C++ Report from 1996 to 1999. He is a featured speaker at international conferences and trade shows.