Mis on sõltuvuste pööramise põhimõtte tähendus tarkvarasüsteemide disainis?

The Dependency Inversion Principle (DIP) states that high-level modules should not depend on low-level modules directly. Instead, both should depend on abstractions (e.g., interfaces or abstract classes). Abstractions should not depend on details, but details should depend on abstractions.

This allows reducing coupling between components, making testing easier and increasing system flexibility. For example, instead of a class directly creating an instance of another class, it receives it through an interface, which makes it easy to change the implementation without modifying client code.