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Yousri 2022-05-10 16:08:05 +02:00
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@ -336,3 +336,6 @@ You have to create a new mother class for these two classes like the preceding e
This convention says that all classes that we use depends on the interface or abstract classes. This convention says that all classes that we use depends on the interface or abstract classes.
Like precedents example, all methods was abstracts. Like precedents example, all methods was abstracts.
>The Dependency Inversion principle states that our classes should depend upon interfaces or abstract classes instead of concrete classes and functions.
>We want our classes to be open to extension, so we have reorganized our dependencies to depend on interfaces instead of concrete classes.