Dependency-Inversion-Principle

TL;DR: DIP (Dependency Inversion Principle): High-level modules should not depend on low-level modules; both depend on abstractions. DI (Dependency Injection): A technique to supply dependencies from outside a class, improving testability and flexibility. IoC (Inversion of Control): A broader concept where control of object creation and dependency resolution is delegated to a container or framework. Together, they enable decoupled, maintainable, and testable applications. DIP is a design principle, DI is a pattern, IoC is the overarching concept. Introduction If you’ve ever been in a job interview for a software developer position, chances are you’ve been asked to explain the difference between DIP, DI, and IoC. I know I have, and the first time I was asked, I definitely stumbled through my answer! ...

TL;DR - SOLID principles SRP: one class, one reason to change OCP: extend without modifying LSP: subclasses must behave like base types ISP: keep interfaces focused DIP: depend on abstractions, not implementations Introduction This SOLID tutorial in C# walks through each principle: SRP, OCP, LSP, ISP, and DIP, with practical code, refactoring examples, and real-world scenarios. If you’ve been coding for a while, you’ve probably heard of SOLID. It’s a set of five design principles that Robert C. Martin (better known as “Uncle Bob”) came up with back in the early 2000s. Since then, these ideas have become pretty much essential knowledge for anyone writing object-oriented code. ...