Backend guide
Object-Oriented Programming, Concept-First
A plain-English, language-agnostic guide to object-oriented programming — objects and classes, and the four pillars: encapsulation, abstraction, inheritance, and polymorphism, plus why "composition over inheritance" is the advice you hear most. Concepts, not syntax.
6 lessons·47 min read·Free, no account
- 01What Is Object-Oriented Programming? Objects, Classes, and the Big IdeaBeginner·8 min
- 02Encapsulation: Protecting an Object's Data Behind a Small InterfaceBeginner·8 min
- 03Abstraction: Showing What an Object Does, Hiding HowBeginner·7 min
- 04Inheritance: Defining a Type in Terms of AnotherBeginner·8 min
- 05Polymorphism: One Call, Many BehavioursBeginner·8 min
- 06Composition Over Inheritance: The Advice You'll Hear MostBeginner·8 min