Converting an App from Obj-C

In Xcode 16, Apple quietly introduced the ability to format your Swift files using Swift Format. I’m a long-time user of SwiftLint, but having such a tool built into Xcode would be a great convenience, so I decided to give it a try. Here is my description of why I use such a tool, how well it works compared to the alternatives, and how I...

In 2012, with OS X Mountain Lion, Apple added a feature called Gatekeeper . It had been available earlier as a command line utility, but this was the first time they made it accessible through System Preferences. Gatekeeper allowed users to control which apps could be installed on their Macs by offering three options: allow apps from App Store,...

In Xcode 16, project files and folders are arranged differently in the Project navigator. What used to be a group is now a folder, and this simple change has some interesting effects. At first, I was against the new scheme - in fact in my SwiftUI for Mac 2024 article, I specifically recommended reverting back to the old group method. But after...

Over the years, I have written articles and sample apps to demonstrate the new features of each year’s SwiftUI updates with particular emphasis on macOS app development. Last year, the major update to SwiftUI was the new data flow system using the Observation framework. I covered that in my article SwiftUI Data Flow 2023 but I didn’t feel there...

I started writing books for Kodeco when I was asked to contribute some Mac content to SwiftUI by Tutorials. I quickly learned that I really enjoyed long form technical writing but I wanted to create more Mac-specific content. After some negotiations, Kodeco agreed to my plan to write macOS by Tutorials and the first edition was published in April...