7. Mastering Inheritance and Composition
Inheritance and composition play major roles in the design of object-oriented (OO) systems. In fact, many of the most difficult and interesting design decisions come down to deciding between inheritance and composition.
These decisions have become much more interesting over the years as object-oriented design practices have evolved. Perhaps one of the most interesting debates revolves around inheritance. Although inheritance is one of the fundamental constructs of object-oriented development (a language must support inheritance to be considered object-oriented), some developers are even turning away from inheritance by implementing designs solely with composition.
It is common to use interface inheritance ...
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