Discover how C# extension methods let you inject behavior into types you can’t change. Learn when to use them, see practical examples, and follow best practices for clean, maintainable code without inheritance or wrappers.
Discover when to use tuples, record structs, or classes in C#. Learn the pros and cons for private methods, public APIs, and evolving code. See practical examples and a comparison table to make the best choice for clean, maintainable software.
Learn how to use C# nullable reference types for robust null-safety. See when to enable or disable nullable reference types, how to annotate code, and best practices for APIs, data models, and legacy migration.
Discover why exposing behavior instead of data is a core principle of robust C# design. See practical examples of leaky vs encapsulated classes, learn how to protect invariants, and get actionable tips for writing maintainable, future-proof APIs.