I didn't explore the file structure much until recently. When I first started with programming on the Mac, I would start Xcode, go to File->New project, etc. I was having problems getting a start until I used ChatGPT to get started on how to program with Swift. Eventually I would stop, either by getting stuck or something else causes a pause (vacation, etc.).
Some number of months later, I would start again and I couldn't find my source code - where did it go? As I said before there were multiple parts, so I started on another part. I've had the same experience multiple times, I started thinking somebody was coming over the network and deleting files, so much so I found some USB sticks and I was just going to copy the project directories to those sticks.
Attached is a screen shot of what I see. readNumber (part of a method name), I was looking for the source...