10 February 2025 by Phillip Johnston • Last updated 20 February 2025It’s quite common to think that the Dependency Inversion Principle and Dependency Injection are the same thing, or relatedly to wonder whether they are the same. For the most part, this is fine, and doesn’t really need to be corrected. However, they are not quite the same thing, and it can be useful to understand what distinguishes these two things. Fundamentally, you can distinguish these two in the following way: The Dependency Inversion Principle (DIP) is a software design guideline. This guideline recommends that classes should only have direct …
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