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Concurrency is the entry point for the most complicated and bizarre bugs a programmer will ever experience.
Actors offer data isolation within a type in such way that the code you write cannot create data races. 
Learn how to create a separate environment for your app with the help of Configuration and Scheme.

Every SwiftUI Group is limited to only have ten child views. In this article you can lift this restriction by adding some custom view builders to enable more than 10 child views.
Use the @propertyWrapper to remove boilerplate, improve readability, and clean up code.

This past month we released four completely free videos dedicated to diving into the real-world Swift code.
Tools & Libraries
Introspect underlying UIKit components from SwiftUI.

It's almost WWDC time, so here's what I want to see.