dependencypassing

Dependency passing is a software development concept that describes a technique for managing how components or modules within a system interact and rely on each other. Instead of a component directly creating or looking up its dependencies, those dependencies are provided to it from an external source. This external source is often a framework or a dedicated dependency injection container. The primary goal of dependency passing is to decouple components, making the system more flexible, testable, and maintainable.

There are several common ways dependency passing is implemented. Constructor injection is one method where dependencies are passed as arguments to the component's constructor. Setter injection involves providing dependencies through public setter methods after the component has been instantiated. Interface injection is another approach where a component implements an interface that defines methods for receiving dependencies.

The benefits of dependency passing include improved testability, as it allows for the substitution of real dependencies with mock or stub versions during testing. It also promotes code reusability and makes it easier to swap out implementations of dependencies without altering the components that use them. This leads to a more modular and adaptable software architecture, reducing the ripple effect of changes throughout the codebase.