C++

18    Specials for Classes

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• friend-classesOne class can explicitly allow another class to access all its elements.

• Signature class or pure abstract classIn a signature class, all methods are pure virtual, i.e., virtual and = 0.

• Multiple inheritanceA class that directly has multiple base classes.

• Diamond inheritanceA class that has the same ancestor class multiple times in its hierarchy but does not include it twice. It uses virtual.

• Literal data typeA class that has a constexpr constructor.

Regarding classes, you now have the necessary basic knowledge. I would say you know enough for 99% of your use cases. But for those one out of a hundred classes, I also want to prepare you. This mainly involves the technical ...