SOLID Principles
Dependency Inversion Principle (DIP)
The Dependency Inversion Principle states that high-level modules should not depend on low-level modules. Both should depend on abstractions. Additionally, abstractions should not depend on details. Details should depend on abstractions.
High-level modules should not depend on low-level modules. Both should depend on abstractions (interfaces or abstract classes).
Abstractions should not depend on details. Details (concrete implementations) should depend on abstractions.
Benefits:
- Promotes loosely coupled systems: High-level modules are not directly dependent on low-level modules.
- Enhances code flexibility and maintainability: Changes in low-level modules do not affect high-level modules.
- Facilitates easier testing: Dependencies can be replaced with mock objects for unit testing.
General Tips!
- Start Small: Begin by applying these principles to new code you write. Gradually refactor existing code to comply with SOLID principles as you work on it.
- Test Often:Test Often: Use unit testing to ensure that your abstractions work correctly and that changes to your code do not introduce new bugs.
- Code Reviews: Incorporate SOLID principles into your code review process. Have peers review your code to ensure adherence to these principles.
- Continuous Learning: Keep learning and improving your understanding of these principles. Read books, articles, and tutorials, and practice applying these concepts in your projects.