Thanks for the tip. What is a Standard position? Are there any docs on this new 'feature'?

No. My playground projects are all macOS ones. Indeed I have never tried an iOS playground.

I want to do this in Objective-C. Does anyone have experience on integrating OpenCV into Xcode project?

This sure works. I thought I could get the instance of NSPopover somehow and set its delegate property instead.

I can develop with Xcode 13 and when it's ready I build with the latest Xcode.

Does anyone know where to download the official image of macOS 10.10? I can burn it to USB disk and install on a separate external USB drive.

That's just what I was looking for. I did not notice this new Info tab! It turned out that I did fall behind the line. I did not even know when Info.plist was moved/integrated into target info.

The bundle name is just "net.neolib.test" so simple that I couldn't make mistakes.

In this thread https://developer.apple.com/forums/thread/683911, someone claimed that he workaround the problem by manually archiving the app. How to do this manually?

Thanks for your TSI support. I actually worked around this annoying thing by adding an empty entitlements files to my projects. Thank God! After 2 weeks of agony, I finally passed the review and a new version of my app was published in App Store yesterday. Dare me to say, Xcode 14.2 is really crap!!! Really hope Apple can release a fix version say 14.2.1.

Okay, I found out the answer myself. Just a piece of AppleScript with 2 lines: log "Activating Xcode app..." activate application "Xcode"

Strange I don't have Book Store section. Maybe it's only available to English culture.

That's really strange because in a normal Swift app, any class in any source file is implicitly "internal" and can be used without having to mark it as public.

It's a bit strange that the old JSONSerialization works in the case.

It works, but strictly speaking append(String(format:)) does not equate to appendFormat because it creates an intermediate string object.