An explanation of how to implement the Help command, and how to use that to display a PDF document in a SwiftUI View.
SwiftUI
Source code for the main article about SwiftUI on macOS, to be read alongside that article.
Apple advises that SwiftUI apps for macOS avoid using AppDelegate. How can you substitute initial app setup, and cleaning up before an app quits using just SwiftUI?
SwiftUI is almost five years old. Following experience porting an AppKit app for macOS to SwiftUI, it still has a long way to go. Here’s the current state of play.
Apple needs to widen the gap between late Intel and Apple silicon Macs without locking Intel Macs out, mature Stage Manager, fix System Settings, and more.
Does that app use Electron, Catalyst, SwiftUI, AppKit, or is it an iPhone app? How to find out easily.
SwiftUI, notarization, malware detection, and Time Machine for APFS: all look worryingly incomplete in Catalina. Are they a bit premature?
Was WWDC a damp squib after all? With only one new unaffordable Mac announced, and more dreadful privacy dialogs on their way, you might think so.
The Eclectic Light Company 