Object-Oriented Programming

Classes to clean architecture: the four pillars, SOLID, all 23 GoF patterns, refactoring, testing, concurrency, DDD and five language tracks — 154 programs run for real.

Lessons

• Pattern Foundations
• Singleton
• Factory Method
• Abstract Factory
• Builder
• Prototype
• Object Pool
• Adapter
• Bridge
• Composite
• Decorator
• Facade
• Flyweight
• Proxy
• Strategy
• Observer
• Command
• State
• Template Method
• Chain of Responsibility
• Iterator
• Mediator
• Memento
• Visitor
• Interpreter
• Additional Patterns: Enterprise and Resilience
• Code Smells
• Refactoring Techniques
• Refactoring Capstone
• Introduction to Programming Paradigms
• Classes and Objects
• Access Specifiers and Encapsulation
• Abstraction and Interfaces
• Constructors and Initialization
• The Four Pillars of OOP
• Inheritance
• Polymorphism
• Association, Aggregation, Composition and Dependency
• Object Layout and Runtime Dispatch
• Advanced Inheritance and Dispatch
• Reflection and Runtime Metadata
• Metaprogramming and Compile-Time Polymorphism
• Functional OOP and Immutability
• Concurrency and Thread Safety
• Async and Event-Driven Object Design
• Serialization, Persistence and ORM
• API and Library Design
• Unit Testing and Testable Design
• Test Doubles
• OOP Testing Strategies
• Design for Testability
• Secure Object Design
• Reliability and Robustness
• Performance and Memory Efficiency
• Layered Architecture
• Hexagonal Architecture (Ports and Adapters)
• Clean Architecture
• Domain-Driven Design (DDD)
• Enterprise Application Patterns
• Event-Driven and Distributed Design
• C++ OOP Track
• Java OOP Track
• C# OOP Track
• Python OOP Track
• TypeScript and JavaScript OOP Track
• Cross-Language Comparison
• Beginner Projects
• Intermediate Projects
• Advanced Projects
• Fundamentals Interview Bank
• Intermediate Interview Bank
• Advanced Interview Bank
• Practical Coding and Design Interviews
• What to Learn Next & Final Checklist
• Static, Instance and Constant Members
• `this`, `self`, `super` and Base Access
• Copying, Moving and Object Semantics
• Memory Management and Resource Lifetime
• Exceptions and Error Handling
• Method and Constructor Overloading
• Operator Overloading
• Templates and Generics
• Enums, Value Objects and Domain Modeling
• SOLID Principles
• DRY, KISS, YAGNI and Other Heuristics
• Coupling, Cohesion and Dependency Direction
• Inversion of Control and Dependency Injection
• UML Class Diagrams
• Other UML Diagrams
• Object-Oriented Analysis and Design (OOAD)
• Course Overview & Running Example