This article is the first part of an upcoming series that provides a practical introduction to Dependency Injection in a manner that immediately permits you to realize its many benefits without being hampered down by theory.
The concept of Dependency Injection is, at its core, a fundamentally simple notion. It is, however, commonly presented in a manner alongside the more theoretical concepts of Inversion of Control, Dependency Inversion, the SOLID Principles, and so forth. To make it as easy as possible for you to get started using Dependency Injection and begin reaping its benefits, this article will remain very much on the practical side of the story, depicting examples that show precisely the benefits of its use, in a manner chiefly divorced from the associated theory. We’ll spend only a very little amount of time discussing the academic concepts that surround dependency injection here, for the bulk of that explanation will be reserved for the second article of this series. In