This article covers everything about how
for loops work internally and what protocols and behavior of the internal compiler allow you to use those loops.
Rick Wierenga from Heartbeat, with a complete guide about how to build a barcode scanner by using Vision framework.
A new piece from NSHispter about every possible way to track iOS users in the past and today's iOS.
Core concepts of the Swift reference management is covered in this article from Swift Notes.
💬 Discussion Topics
The very hot discussion happened last week on Twitter between developers about using [weak self] instead of [unowned self]. What your opinion on this topic? Let me know in the comments.
If any of your screens contain UITextView, you may face the app crashing on Xcode 11.2. Check this topic on Apple Developer Forums for more details.
Devran Uenal started working on the open-source version of SwiftUI. Follow this thread on Twitter to get more information about the current development state.
This week libraries are all about declarative UI. I hope they are useful for your future research or projects.
OpenSwiftUI is an OpenSource implementation of Apple's SwiftUI DSL.
Declarative UIKit with LivePreview for iOS9+.