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There are many refactorings in Fowler's book, and what I'm

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showing here is just a partial list. And we're not going to

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have time to go through the complete list of refactorings,

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so what I'm going to do instead, I'm just going to pick a

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few of those, but I'm going to explain in more depth,

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and for which I'm going to provide some examples. In particular, we're

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going to talk about the collapse

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hierarchy refactoring, the consolidate conditional

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expressions, the decompose conditionals, extract

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method, extract class, and inline class.

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And we're going to see each of those individually in the rest of the lesson.