You don't show enough code (eg, ContentView) to find out what is the problem. Card is not ObservableObject. That may be the cause of the problem. Try to make it a class and ObservableObject. 2 more comments: why don't you use environmentObject for deck, instead of all the bindings ? in Xcode16, observable is much easier to use than ObservableObject. If needed, get details here: https://medium.com/@vladislavshkodich/remove-observableobject-from-your-swiftui-model-cb455e9572ef

I was looking for User definition. It is a Firebase class, should be this one: https://firebase.google.com/docs/reference/swift/firebaseauth/api/reference/Protocols/UserInfo.html I suppose error is here: let updatedUser = User( coder: <#NSCoder#>, id: userId, name: name, email: email, phoneNumber: phoneNumber, profilePictureURL: nil, bio: bio ) why do you include coder here ? And what does <#NSCoder#> mean ? Where did you get it ? I understand you have several init for User: either with coder public required convenience init?(coder: NSCoder) or direct declaration with all the properties. So, you'd better study carefully FireBaseAuth documentation.

It is difficult to guess the overall structure of your code. Is DotGenerator calling ContentView ? Did you look at the solution I proposed ?

That's not a good way to ask a question, just formulating the error in the title. Where do you get the error precisely in your code ? We cannot guess.

Welcome to the forum. Please show the complete code. How is User defined ? It seems you forgot a closing parenthesis, isn't it ?

You don't show how the view uses the result. That should help. I would do it with recursively calling iteration steps. In the View, as an action for a button, call simulation() This function is defined as func simulation() { let numberOfStep = 100000 // any very large number runSimulation(in: stopped.atStep..<numberOfStep) } The trick is that in runSimulation(), you call calls it recursively func runSimulation<T: Sequence>(in sequence: T) where T.Element == Int { // execute one step of the loop runSimulation(in: sequence.dropFirst()) // call recursively } stopped is a state var @State var stopped : (on: Bool, atStep: Int) = (on: false, atStep: 0) atStep is the value (loop index) at which you may have stopped with another button action in the view, which let's you resume where you stopped if you want with a resume button. Note that in your case, you could do it by chunks of 100 steps instead of individual steps, so the number of steps would be 1000 instead of 100000 for instance. Much more detailed explanation here: https://stackoverflow.com/questions/64202210/dispatchqueue-main-asyncafter-not-delaying Hope that helps.

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That's not a question for developers forum, as it is not a question about your own development. You'd better ask either on: the game developer or its forums Apple Support Community: https://discussions.apple.com/welcome

The UI part is essential. I remember in the old ages the Jazz spreadsheet on Mac was a complete mess, because it did not exploit the Mac UI capabilities. Where Excel did it excellently. I understand it is for your personal use ? A full fledge spreadsheet is a huge endeavour. Beyond an individual capability (specially if you're a beginner on Mac development), unless you limit yourself very strictly (aka VisiCalc if you remember, plus some specific capabilities to handle functions you think of). As for the language, I would suggest Swift.

In addition, this is not a question for the developers forum. It would be much more appropriate to post on Apple support community.

Welcome to the forum. You must have seen intermediary status during archiving. What were they ? At which step exactly are you blocked ? Did you get network connection issue ? You can always delete the archive and create a new one.

I tested your code in Xcode 16.1ß3 (Swift 6.0.2). It apparently works. I even tested with return lhs.count == rhs.count && lhs.title == rhs.title Could you show complete code to reproduce ? Where exactly do you declare MyView ?

Unfortunately, I can't tell if anything changed. But if you ask each subview to be visible, do you get them ? Or try (I did not test) to makeKeyAndOrderFront, with something like: theWindow.subview1.makeKeyAndOrderFront(theWindow.subview1)

The problem is that you use @environmentObject inside a class and not a View. It is not allowed to do so. A solution here: https://stackoverflow.com/questions/65370698/how-to-access-a-global-environment-object-in-a-class

What is exactly the name of the app you deleted ?