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?

Polymorphism isn't explicitly connected with arrays, and the examples you give look like classes. Polymorphism is one of the four principles of Object Oriented Programming (the other three being (encapsulation, abstraction, inheritance), and is primarily connected with the last one, inheritance.

If you'd like to know the basics of OOP, there's no better video series (that I'm aware of) than the one hosted by Simon Allardice.

This is a good start: Computer programming: What is object-oriented language?

Those examples are not arrays, they're classes (or objects). 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?

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?