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-1

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-The first scenario is the typical case in which it is

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-2

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-recommended to use the extract method refactoring, when there is duplicated code

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-3

-00:00:07,040 --> 00:00:09,190

-in two or more methods and we want to take this

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-4

-00:00:09,190 --> 00:00:12,420

-code and factor is out, and basically have the two methods called

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-5

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-a third method, which is the one we create using the

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-6

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-refactoring. When a class is too large, normally we don't want to

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-7

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-apply the extract. Extract method. Instead, in this cases, it is

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-8

-00:00:21,330 --> 00:00:22,900

-usually more appropriate to use the

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-9

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-extract class or extract subclass refactorings.

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-10

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-Analogously, when the names of two classes are too similar, extracting a

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-11

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-method will normally not help much. And all we need to do

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-12

-00:00:32,729 --> 00:00:35,810

-in case having too similar names is actually a problem. Is to

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-13

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-rename one of the two classes, or both, if we wish. Finally,

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-14

-00:00:39,600 --> 00:00:42,530

-it is definitely appropriate to apply the extract method of refactoring in

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-15

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-cases in which a method is highly coupled with a class other

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-16

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-than the one where it is defined. In this case, which we

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-17

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-will discuss also later in the lesson, the extract method of refactoring

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-18

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-allows us to extract part of the metal to With the other class.

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-19

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-Then we can take the matter that we just extracted and move it

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-20

-00:00:58,690 --> 00:01:01,880

-to the class where it actually belongs. So the extract method is one

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-21

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-of the two refactorings that it is appropriate to apply in these cases.