1. [The Swift 5.1 features that power SwiftUI’s API @johnsundell](https://www.swiftbysundell.com/posts/the-swift-51-features-that-power-swiftuis-api) 2. [Inside SwiftUI's Declarative Syntax's Compiler Magic @rockthebruno](https://swiftrocks.com/inside-swiftui-compiler-magic.html) 3. [Understanding Property Wrappers in SwiftUI @mecid](https://mecid.github.io/2019/06/12/understanding-property-wrappers-in-swiftui/) 4. [Understanding Opaque Return Types in Swift @rockthebruno](https://swiftrocks.com/understanding-opaque-return-types-in-swift.html) 5. [First impressions of SwiftUI @cocoawithlove](https://www.cocoawithlove.com/blog/swiftui.html)