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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.
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.