SOLID – The Dependency-Inversion Principle

We have now reached the grande finale of the blog series on SOLID, the big D, The Dependency-Inversion Principle. Let’s jump right into it. Definition The Dependency Inversion Principle (DIP) states: A: High-level modules should not depend on low-level modules. Both should depend on abstractions. B: Abstractions should not depend upon details. Details should depend […]

SOLID – The Open/Closed Principle

In this third post on the SOLID principles we will look at the Open/Closed Principle (OCP). Definition Bertrand Mayer coined the Open/Closed Principle in 1988, and it states that ”A software entity (class, module, function) should be open for extension but closed for modification”. A software entity complies to OCP if its behavior can be […]

SOLID – Introduction

If you have been working with object oriented programming (OOP) for some time you have probably heard of the SOLID principles. There is a lot of information available online on SOLID, of various quality. In this blog series, where you are currently reading the first part, I will cover the principles in detail and explain […]