Ah, I didn't notice there is this builtin property!

Same problem here, macOS Sonoma 14.2.1.

You don't need to start over again. What I meant was remove the file by reference from the project and add it back again. This should work.

I am aware of Regex, but it's not the same as direct file pattern globbing. And for my case, I need to support older macOS versions (11+), but Regex is only available on macOS 13+.

Ah, yes. This is the second time I fell into the same pit. The last time was years ago... Just hate this design by Apple, why a tight loop cannot have ARC automatically?

That's the missing little piece...

Ah, English is not my native language. And any legal documentation is cryptic to me, I can never understand them, even if they are written in my native language.

I don't believe it's a bug. It's simply that I didn't know where to find the predefined key codes. import Carbon.HIToolbox does the job.

I am on Appkit, it seems NSScrollView does not have onChange event, and I cannot find any properties/notifications that can tell me the current scroll position. That's odd.

I tend to use your answer after reading docs because NSPanel offers more features that are just what I need for a "preview" window.

I also found out this soon after I posted my question: [NSRunLoop.currentRunLoop run];

That SO thread is about a custom X button. I want to know if there is any way to hook up the action of the system X button.

The info in the language reference does not explain what's the difference. It seems when used in file level private is same as fileprivate: class SandBoxVC: NSViewController { override func viewDidLoad() { super.viewDidLoad() print(aaaa, bbbb) // no compiler error here } } fileprivate let aaaa = 1234 private let bbbb = "bbbb" I almost believe this is an oversight bug in Swift compiler - private should not be used in file level.

I cannot access private or fileprivate vars in another file right? So what's the difference?

Yes, this is just what I want. I wanted the experts to confirm that private and fileprivate at file level work the same way. BTW, I am quite familiar with private modifier inside enum/class/struct definitions.