What is this method? Can you clarify?

As already noted, there's no direct equivalent of PHP pack() in any of Apple's frameworks and I have never find any third party libraries implementing PHP pack() in Swift. You may need to implement it all by yourself. When you write questions focused on some specific parts of your implementation with showing your code, many readers would try solving the issues.

@JChen37, You should better start your own thread with including enough context of your case. Not many readers would check the comments added to an old thread.

you should better show more context (especially your code), to get better responses sooner Why don't you show your code enough to reproduce your issue? A few screen shots and very little explanation would not be appealing to many readers.

Hard to say whether it is good or not. Many developers are still suffering to explore what would be the best practices in SwiftUI.

Thanks for showing the additional info. But please remember you have just mentioned the combobox, but not that it was in the Create a new simulator window. Anyway, I have no clue as for now, it may be a problem of macOS Monterey 12.0.1 (I'm using Big Sur), or there may be something special which you have not mentioned yet.

@ShinehahGnolaum, I'm not sure why anyone would fetch just the unified contacts. You may be misinterpreting what unified contacts mean. Better take enough time before marking an answer as SOLVED, you cannot unmark it. And as the editing feature is very limited in the dev forums, you may need to use Your Answer when showing some code.

Happy to hear you have solved your issue. But unfortunately, storyboard connections may be corrupted or lost by various means, so hard to say what have caused this issue in your case. Anyway, you have learnt where to check and you can go on learning iOS development when another similar issue occurs.

Please do not include two or more topic in a single thread. When you have a new question, you should start a new thread. (Even when many parts of them are related.)