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Programming Concepts Beginner

What is Object-Oriented Programming (OOP)?

A programming paradigm that organizes software design around objects containing data and behavior.

OOP uses four main principles: Encapsulation (bundling data with methods, hiding internals), Inheritance (creating new classes from existing ones), Polymorphism (one interface, multiple implementations), and Abstraction (simplifying complex systems).

OOP models real-world entities as objects. A Car class might have attributes (color, speed) and methods (accelerate, brake). Languages like Java, Python, C++, and PHP support OOP.

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A data structure that follows Last-In-First-Out (LIFO) ordering, where elements are added and removed from the same end (top).
Twelve-Factor App
A methodology of twelve best practices for building modern, scalable, maintainable software-as-a-service applications.
Unit Testing
Testing individual components or functions of a program in isolation to verify they work correctly.
Refactoring
Restructuring existing code without changing its external behavior to improve readability, maintainability, and performance.
Observer Pattern
A design pattern where an object (subject) maintains a list of dependents (observers) that are notified automatically of state changes.
Event-Driven Architecture
A software design pattern where components communicate by producing and consuming events rather than direct method calls.
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