While this book does not cover object-oriented programming, some object-oriented design principles are universal and could be applied to any programming language and paradigm. Here, we will take a look at some of the most well-known design principles. In particular, we will cover the following:

• SOLID: Single Responsibility, Open/Closed, Liskov Substitution, Interface Segregation, Dependency Inversion
• DRY: Don't Repeat Yourself
• KISS: Keep It Simple, Stupid!
• POLA: Principle of Least Astonishment
• YAGNI: You Aren't Gonna Need It
• POLP: Principle of Least Privilege

Let's start with SOLID.