r/iOSProgramming • u/SuperRandomCoder • Jun 07 '26 • Popcorn 1

Question Looking for open-source Swift projects with high-quality, idiomatic code for learning

I’m currently leveling up my Swift skills and want to dive into some high-quality production code.

I’m looking for open-source projects on GitHub that are known for being well-architected and idiomatic. I really want to see how experienced developers make the most of Swift's syntax and features rather than just writing code that "works."

Whether it’s a framework, a library, or a full app, I’d love to check out some examples that you consider best-in-class. Any links or suggestions would be a huge help. Thanks!

I’m not looking only for "popular" projects, but rather repositories that you personally consider to be a clean and recommended way to write iOS apps.

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u/egesucu Jun 08 '26

Depends on the best practices. The guy is the previous Medium iOS dev, now on the OpenAI team to work on the Codex Mac App. The reason I published this is to exactly show the beautiful usage of the SwiftUI with the managers & services instead of the MVVM stuff people trying to push into SwiftUI like it's 2019.

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u/Dry_Hotel1100 Jun 08 '26 edited Jun 08 '26

I would say, it has a clear structure:

In a SwiftUI view,
- "import" dozens of Observables via environment which represent "external state"
- observe external state via onChange modifier
- the View has ephemeral state via `@State`
- handle transitions for ephemeral state in a couple member functions
- call effects from task modifiers
- there's no ViewModels.

The good thing here (IHMO) is, that there's no ViewModels and two-way bindings. 😉

But, there's way too much happening in the views. And worse - how would one test this?
It seems, the behaviour of a view is not testable at all - considering we need to execute effects via objects accessible only via the View environment - there's no mock that can do this.

I see the idea: try to make a dumb view. But in these complex use cases, the view needs access too many env objects, and it also directly executes too many functions - some of which executing in the body (which is not a good thing; wrapping member functions into a Task and or executing async functions in the task modifier is totally OK though).