This tutorial series explains the basics of dependency injection.

Oleg Proskurin

Vercel

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Dependency Injection (DI) is a style of object configuration where an external entity sets an object's fields and collaborators. This helps in making the object more flexible and testable. The provided example demonstrates how to decouple a class from its dependencies by injecting them via constructors, improving maintainability. The concept is extended through layers of the application to enhance modularity.