Downloading runtime support from Apple can save you wondering why a tool appears to be broken.
Source code workthrough of one method of checking for and automatically downloading updates to an app, in Swift 5 for macOS 10.11-10.14.
is Swift somehow superior to Objective-C? Or is it a second-class language for macOS? Do those questions have any meaning at all?
How can an app check that nothing has nobbled it? How to use its code signature to perform a simple launch test.
Presenting two or more versions of the same text close together is a challenge. Here’s how I arrived at one solution, and implemented it.
How to cater for Dark Mode when printing an AppKit view, and how to add a command to export a document in PDF format. Swift 5.0.
This error message can occur when running any command tool, or an app which calls a command tool, in 10.14.3 and earlier.
In Sierra but not Mojave, when the user opens an ancillary window, it appears for a moment, then vanishes. Is it a bug in the code, or in AppKit?
How many apps should launch faster, deliver better performance, be smaller, and use less memory than they have in the past.
A simple way to provide a proper Help book for your app, and separate PDF documentation without wasted effort. Uses Swift in Xcode.