How much more difficult is it to write your own code to handle user preferences, rather than letting UserDefaults handle them?
Xcode
Which String.contains() variant should you use, and how can you give access to regex searching? More answers coded in Swift 3.1.
Creating a drop-down sheet to let the user change preference settings is a bit intricate, but straightforward.
In some respects at least as good as any other Swift playground product, and its AppleScript support has improved considerably. But in other respects still falls short. In a class of one.
The code scrapbook is finished, and has now produced its first set of articles. Five articles in around ten minutes seems pretty impressive to me.
Calling shell commands, including with privileges, NSBackgroundActivity, XPC Activity, and writing shell commands in Swift.
Dates with (NS)Date and DateFormatter, writing messages to Sierra’s unified log, and working with old Objective-C interfaces.
Reading and writing preference files, storing data in property list files, and reading JSON data.
Alerts, open and save file, text boxes, radio buttons, popup menus, steppers, read and write in NSDocuments, and much more.
Swift 3.1 code snippets for string manipulation, working with attributes in attributed text, and with arrays.
The Eclectic Light Company 