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Django Reinhardt
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Those examples are not arrays, they're classes (or rather objects created from classes). If you want learn more about the four principles of Objected Oriented Programming (encapsulation, abstraction, inheritance, and polymorphism), or just the basics of OOP, there's no better video series (that I'm aware of) than the one hosted by Simon Allardice.

Video: Computer programming: What is object-oriented language?

Django Reinhardt
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