DrupalCon Barcelona 2015: Dependency Injection, what, why, how and when

This talk covers dependency injection and its role in creating reusable and flexible code by making dependencies explicit and replaceable. The speaker examines how this design pattern works, discusses various types of injection, and explains how they contribute to writing more flexible code. While using a dependency injection container is not essential for leveraging the benefits of dependency injection, it can enhance dependency management in larger applications. The speaker also explores the Symfony container, highlighting its features and power as a tool for developing maintainable applications.