Refactoring
We keep the code simple at all times.This minimizes investment in excess framework and support code. We retain the necessary flexibility through refactoring.
Refactoring is the process of improving the code's structure while preserving its function. The definitive book on the subject is Martin Fowler's Refactoring: Improving the Design of Existing Code. Get it, study it, and learn it. We can't begin to do it justice here, but we'll tell you a bit about how and why.
Even if you spent a lot of time designing up front, as you wouldn't do on an XP project, the details of your design would inevitably be wrong here and there. If you focus on delivering business value rapidly, your system will have an even greater need to evolve. Refactoring ...
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