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There are
several prime opportunities for refactoring.
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When you are
changing the code anyway, you may as well improve it a little, too.
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Often bugs are a
result of complex code that should be simplified.
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If others are
goings to look over your code, then it should be as understandable as
possible.
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Fowler says that
someone told him that the first time you do something, you just do it. If you have to do it a second time, you
don’t like it, but do it anyway. The
third time you do something similar, you refactor, probably with an emphasis
on reuse. This he calls the third
strike.
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