DIP
The DIP advocates that high-level modules should not depend directly on low-level modules. Instead, both should depend on abstractions or interfaces. By doing so, you decouple the high-level components from the details of the low-level components.
This principle allows for the reduction of the coupling between different parts of the system you are building, making it more maintainable and extendable, as we will see in an example.
Following the DIP brings loose coupling within a system because it encourages the use of interfaces as intermediaries between different parts of the system. When high-level modules depend on interfaces, they remain isolated from the specific implementations of low-level modules. This separation of concerns enhances maintainability and extensibility.
In essence, the DIP is closely linked to the loose coupling principle, which was covered in Chapter 1, Foundational Design Principles, by promoting a design where components interact through interfaces...
