Once again about Bridge (in pictures)

Once again, if the community allows, I will turn to the topic of the Bridge pattern, for the last articles, in my opinion, explain it not so simply as needed.



The basic idea: “We use the Bridge where we need to change not only the implementation, but also the abstraction” .



One picture is worth 1000 words ...

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We separate abstraction (API) and implementation into two different hierarchies and get the opportunity to manage them separately . Now implementation is not bound to the interface, and we can create new abstractions (by extension), based on the methods of basic abstractions .



Everything. What are the posts kilometer dilute - I do not understand ...



PS Explanation and image taken from Head First Design Patterns