Making the Complex Simple

Today we are going to talk about one of the most confusing topics of all and see if we can unravel the mess of Dependency Inversion, Inversion of Control and Dependency Injection.

It’s not completely important that we understand the specifics of each of these names, because many people end up using them interchangeably.  It’s pretty unlikely that we are going to correct all that in this blog post.

What is important is that we understand the concepts and ideas behind each of these topics and understand what architectural problems each one is trying to solve.

Today, we are going to focus on Dependency Inversion and get a little bit into inversion of control.

Inverted-Bookshelf

Dependency inversion is the root

It all started with this simple concept introduced by Uncle Bob in his article in the C++ Report of May 1996, The Dependency Inversion Principle.

If you have the time…

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