July 2010
Intermediate to advanced
359 pages
7h 41m
English
Content preview from Pro PHP Refactoring
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C H A P T E R 5
Test-First Development
Refactoring is a powerful tool, enabling you to improve the design of your software. It means taking your working code and changing it, sometimes deeply, to make it perform the same tasks it performed before changing it. Somehow this could sound quite pointless: why be at risk of losing a piece of working code just to improve its design? Shouldn't the functionality of working code be valued more than its structure?
Any wise programmer should ask herself questions like these at the first mention of refactoring. We have already called attention many times to the importance of preserving our existing code ...
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