Question

Is the Dependency Inversion Principle essentially about coding to abstractions and not class member details?

a. Yes
b. No

Answer 1

Yes, the Dependency Inversion Principle is centered around coding to abstractions instead of concrete class member details, promoting a loose coupling and more maintainable code structure.

Step-by-step explanation:

Yes, the Dependency Inversion Principle (DIP) is essentially about coding to abstractions rather than to concretions. The DIP is one of the five SOLID principles of object-oriented design and it states two important things:

1. High-level modules should not depend on low-level modules. Both should depend on abstractions.
2. Abstractions should not depend on details. Details should depend on abstractions.

This principle aims to reduce the dependencies of high-level classes on the low-level classes by introducing an abstract layer between them. As a result, the systems become more reusable, scalable, and maintainable. For example, instead of having a class that directly invokes methods on a lower-level class, you would code to an interface or an abstract class, which the lower-level classes implement or extend.