Developers often encounter a need for refactoring code that has existed for a long time. This is because software tends to get complex and unmaintainable over time, unless time and effort is spent on preserving the modular structure of the software and its simplicity in the face of evolving needs.
Martin Fowler defines refactoring as "... a disciplined technique for restructuring an existing body of code, altering its internal structure without changing its external behavior". [Src]
A list of "refactorings" both from the original book by Fowler and some later sources, is available here.
Friday, November 26, 2010
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