You should convert everything to String and when reading convert back to Int where needed.

You should define a struct with the var, date, title, goal, nogoal, id struct MyData { var date: Date var title: String var goal: Int var nogoal: ??? var id: ??? } Then create ab array var myData : [MyData] = [] Read the elements from core Data, load each in a new MyData value and append to the array. Please tell if you miss something.

You could try to ask the former developer to sign you a letter certifying that he/she has transferred you the rights on the app. I would then probably have to remove the app for the appstore to let you publish the new one, with the same name (in this case explain clearly when submitting for review).

That's more a question for Apple support (link in Contact Us at the bottom of this page.

Where do you call setupLongGestureRecognizerOnCollection ? I do not see it in the code you posted. Should it be : override func viewDidLoad() { super.viewDidLoad() // Do any additional setup after loading the view. setCellView() setMonthView() func setupLongGestureRecognizerOnCollection() { let longPressedGesture = UILongPressGestureRecognizer(target: self, action: #selector(handleLongPress(gestureRecognizer:))) longPressedGesture.minimumPressDuration = 0.5 longPressedGesture.delegate = self longPressedGesture.delaysTouchesBegan = true collectionView?.addGestureRecognizer(longPressedGesture) } setupLongGestureRecognizerOnCollection() // <<-- ADDED }

Do you add it in storyboard or in code ?

Which iPhone ? How much RAM ? Which iOS version ?

What is the best way to print in the order for the given implementation Best way in what sense ? code size ? speed ? code cleanliness ? Why not have the while(sure) out of func ? (void) print:(NSString*) str { NSLog(@“%@”, str); } while(true) { [self print:@“123”]; [self print:@“ABC”]; [self print:@“456”]; [self print:@“DEF”]; }

Did you try installing Xcode 13.1 RC1 on your Big Sur Mac ? What's the result ? If I trust this site: h t t p s : / / xcodereleases.com MacOS 11.3 would be OK for Xcode 13.1 RC1. And uses MacOS SDK 12.0. Release notes say it requires 12.0, but is it for running Xcode or only executing a MacOS app from Xcode on Mac ? I note also that all 13.0 beta did require SDK 12.0, not the final release. My guess is that Xcode 13.1 will run on MacOS 11.x and will have a 11.x SDK. We shall know soon.

Cells are not data store. You need to have a dataSource. So, in   func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell { you should populate the cell with data coming from a dataSource. Add some code in WorkotuCreationCollectionTableViewCell: struct Content { var reps: Int var weight: Int }     var data : [Content] = [Content(reps: 1, weight: 0)] Add code in   func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {         cell.repsLabel.text = String(data[indexPath.row].reps)           cell.weightLabel.text = String(data[indexPath.row].weight)

the method of switching vertical and horizontal screen is executed.  Could you explain precisely what you do, what you get, what you expect. May be a screen capture could help understand.

Error code : Thread 1: EXC_BAD_INSTRUCTION (code=1, subcode=0x0) Please show complete code of the class where you use liveLabel Where does it crash exactly ? Show the complete crash log.

//add cgPath var to NSBezierPath extension NSBezierPath { public var cgPath: CGPath { let path = CGMutablePath() var points = [CGPoint](repeating: .zero, count: 3) for i in 0 ..< elementCount { let type = element(at: i, associatedPoints: &points) switch type { case .moveTo: path.move(to: points[0]) case .lineTo: path.addLine(to: points[0]) case .curveTo: path.addCurve(to: points[2], control1: points[0], control2: points[1]) case .closePath: path.closeSubpath() @unknown default: continue } } return path } } //View var albumImage = NSImageView() albumImage.layer?.shadowRadius = 10.0 albumImage.layer?.shadowColor = .black albumImage.layer?.shadowOffset = CGSize(width: 10, height: 10) albumImage.layer?.shadowOpacity = 1.0 albumImage.layer?.shadowPath = NSBezierPath(roundedRect: albumImage.bounds, xRadius: 28.0, yRadius: 28.0).cgPath What is supposed draw the shadow ? You create the path, but you do not draw it.

If IBOutlet not connected, connect it. If connected, connection may be damaged: remove the connection (click on the small x in front of IBOutlet in IB) reconnect do a Clean Build Folder to be completely sure everything OK.

let pan = card.pan ?? "", Could you show how you defined card ? If it is a class or a struct which has a var pan, it should be declared as: var pan: String? It could be that 12.3 is more strict on some type checking than 12.0