this post was submitted on 08 Jul 2023
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Why is the joke with Java always factories? Factories are really super useful in a dependency injection context.
I've been working primarily in Go for the past five years, including some extremely complex projects, and I have never once wished I had dependency injection. It has been wonderful. I have used dependency injection - previously I worked on a C# project for years, and that used DI - but I adore Go's simplicity and I never want to use anything else (except for JS for UI, via Electron or Wails for desktop).
Edit: If we're talking about dependency injection in the general sense (separation of concerns, modularization, loose coupling), then yeah I agree that's kind of critical to writing good, maintainable software. When I hear "dependency injection" I think of frameworks such as Unity, and that is what I was specifically talking about - I am very happy with the fact that I have felt zero need to use any framework like that over the last five years.
Go programmer here: What does Go’s simplicity have to do with dependency injection? What does a language itself have to do with dependency injection?
Reading your post and not being personally familiar with your work, I do wonder, perhaps your “extremely complex projects” wouldn’t be so extremely complex if you practiced dependency injection?
How do you unit test your extremely complex projects if your business logic carries the additional responsibility of creating objects?
I say it's all about data flow and composability, if it's pretty much always in one direction (modular tree structure/architecture) then you just don't need all these "patterns"...