Inheritance Hierarchy
Explore how inheritance works in D programming by learning to create hierarchical class structures, handle single inheritance rules, and distinguish 'is a' from 'has a' relationships. Understand subclass specialization and design principles to build efficient, maintainable object-oriented D applications.
We'll cover the following...
Inheritance: An "is a” relationship
We have seen that implementation inheritance is about acquiring members. Consider this kind of inheritance only if the subtype can be thought of as a kind of the supertype, like in the phrase “alarm clock is a clock.”
“Is a” is not the only relationship between types; a more common relationship is the “has a” relationship. For example, let’s assume that we want to add the concept of a Battery to the Clock class. It would not be appropriate to add ...