The three characteristics of OOP

 

One of popular interview questions is: “please describe the four characteristics of object-oriented programming”. In my observation, not many candidates — even the senior ones — can explain well Abstraction, Encapsulation, Polymorphism, and Inheritance. Worse, little did they know the drawback of Inheritance.

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OOP vs. ECS

Kage - Shadow of the Ninja
Kage – Shadow of the Ninja

In recent years, Entity-Component Systems (ECS) has been recognized as the most notable architecture for game development. There are many good articles about the architecture that can be found on the Internet, some of them are:

Of course these articles are excellent and well-written, but one thing I don’t like about them is that they are not fair at comparing OOP and ECS. They think that inheritance is fundamental to OOP thus they blame OOP in order to praise ECS as a preference of composition over inheritance.

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