By Thierry.Lefort
via phpimpact.wordpress.com
Published: Sep 15 2008 / 05:52
In software engineering, “refactoring” source code means modifying it without changing its behaviour, and is sometimes informally referred to as “cleaning it up”. Refactoring neither fixes bugs nor adds new functionality, though it might precede either activity. Rather it improves the understandability of the code and changes its internal structure and design, and removes dead code, to make it easier to comprehend, more maintainable and amenable to change. Refactoring is usually motivated by the difficulty of adding new functionality to a program or fixing a bug in it.
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