eustad https://validator.w3.org/feed/docs/rss2.html C# Collections and LINQ Basics Object-Oriented Programming (OOP) in C# Practical Projects Final project development and presentation Planning an object-oriented application Dependency injection pattern Strategy pattern Factory pattern Repository pattern Introduction to design patterns Writing readable and maintainable code Reducing code duplication Naming and coding conventions Resource management with using Creating custom exceptions Exception handling with try, catch, and finally Refactoring code using SOLID principles Dependency Inversion Principle Interface Segregation Principle Liskov Substitution Principle Open/Closed Principle Single Responsibility Principle Introduction to dependency injection Records and immutable objects Extension methods Delegates and events Collections of objects Generics and generic classes Modelling real-world relationships Inheritance versus composition “Is-a” versus “has-a” relationships Aggregation and composition Association between objects Choosing the correct abstraction technique Abstract classes versus interfaces Multiple interface implementation Creating and implementing interfaces Abstract classes and methods Understanding abstraction Pattern matching and type checking Upcasting and downcasting Virtual and abstract methods Method overriding Method overloading Home Compile-time and runtime polymorphism Multilevel and hierarchical inheritance Sealed classes and methods Method overriding Geeks Newsroom