Once and only once - Everything2.com
Once and only once Wed Nov 08 2000 at 8:56:12 If information is written down two ways, one of the versions will soon be out of date. Therefore: Write everything once and only once. And get agreement with the team on where that one spot should be, so that people will know where to look. As you Refactor Mercilessly and practice You Arent Gonna Need It, you ARE gonna need OAOO. So locate and fold together any duplication you find while adding the current feature. If you apply the Open Closed Princ...
Refactor Mercilessly Open Closed Principle Dependency Inversion Principle Design Patterns Anti Patterns Rape And Paste
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