If that may help… I once had a segmentation fault 11. Reason was: In a struct defined as: struct L { var u1: UInt64 var u2: UInt64 var u3: UInt64 var u4: UInt64 } I defined a subscript extension L {     subscript (j: Int, h: Int) - Bool? { } As far as I remember, the fault occurred if I called var lib  : [L]? if lib[j,h] { } instead of unwrapping: if lib![j,h] { } Hope that may help.

The app's entitlements does NOT have "com.apple.security.files.user-selected.read-write" Note that you could also add manually this entry in the entitlements plist (auto completion works there as well as you type com.apple.security.files.user). So that was the root cause. Don't forget to close the thread.

Are you sure you have not set a direct breakpoint there ? It occurred to others: https://developer.apple.com/forums/thread/39283 or https ://forums.raywenderlich. com/t/thread-1-breakpoint-1-1-2-1/41631 Or have you defined a breakpoint elsewhere ? Can you resume execution after breakpoint ? You should also try an option- clean build folder, in case. In anycase, look at the breakpoint panel at the left of Xcode window to see all the breakpoints you have set, and remove all.

It's not specific to Xcode 12.5. There was a long discussion about this error: 'Abort trap: 6 (in target )' https://developer.apple.com/forums/thread/107097

Don't use min and max for this. For instance, create a func to test validity: func isValidNumberOfPlayers(_ nb: Int) -> Bool { &#9;return nb > 0 && nb <= 10 } Then, when you create or read the list of players, for instance in an array with their names: var players: [String] = [] // You populate the array somewhere In the func where you declare the players, check the value, call if !isValidNumberOfPlayers(players.count) { print("number of players is not correct") // And do whatever you need to do } If you want to give a more precise test result, you could do this: enum PlayersCheckState { &#9;&#9; case ok &#9;&#9; case null &#9;&#9; case tooMany } func isValidNumberOfPlayers(_ nb: Int) -> PlayersCheckState { &#9;&#9;switch nb { &#9;&#9;case ...0&#9;: return .null &#9;&#9;case 1...10: return .ok &#9;&#9;default&#9;&#9;: return .tooMany &#9;&#9;} } Then call &#9;&#9;switch isValidNumberOfPlayers(playersCount) { &#9;&#9;case .null : print("No player") &#9;&#9;case .tooMany: print("too many players") &#9;&#9;case .ok: break&#9;&#9;//&#9;do whatever you need to do here &#9;&#9;}

@SemJelle When you mark the correct answer, it should be the correct answer, not your own acknowledge. In this case, correct answer is eskimo's.

@abhi.tomar That may depend on how space is organised (contiguous or not ?) Try with more room, as 50 GB.

Have you tried removing @escaping for RCTPromiseRejectBlock ? @objc func updateStepsCount(_ &#9;&#9;resolve: @escaping RCTPromiseResolveBlock, rejecter reject: RCTPromiseRejectBlock) { &#9;&#9;checkNotificationEnabled { enabled in &#9;&#9;&#9;&#9;resolve(enabled) &#9;&#9;} } // Or maybe in your case @objc func updateStepsCount(_ statisticsCollection: HKStatisticsCollection, _ resolve: @escaping RCTPromiseResolveBlock, rejecter reject: (RCTPromiseRejectBlock) -> Void) { See: https://stackoverflow.com/questions/59732722/swift-how-can-i-call-my-function-inside-completion-body This may be of interest as general discussion: https://forums.swift.org/t/implicit-escaping-of-closures-via-objective-c/12025

Try UNUserNotificationCenter.current().getNotificationSettings { (settings) in &#9;if settings.authorizationStatus == .authorized { &#9;&#9;// Notifications are allowed &#9;} &#9;else { &#9;&#9;// Either denied or notDetermined &#9;} } As defined here here: https://stackoverflow.com/questions/46664177/check-whether-user-notifications-are-enabled-after-uilocalnotification-deprecati

This tutorial should help you understand how: how to select a tool how to use it https ://medium. com/flawless-app-stories/getting-started-with-pencilkit-on-ios-13-a4bda3323fd8

@ZoneX It is very difficult to help if you don't do exactly what we propose. I proposed: override func prepare(for segue: UIStoryboardSegue, sender: Any?) { &#9;print("segue identifier", segue.identifier) &#9;if segue.identifier == "r" { &#9;&#9;let hockeyDetailVC: HockeyDetailVC = segue.destination as! HockeyDetailVC &#9;&#9;hockeyDetailVC.delegate = self &#9;} } and tell what you get. If you get something different from segue identifier r such as segue identifier R or segue identifier SomeString that means that "r" is not the identifier of this segue (or you don't call the right segue). Then change "r" by what you got here after "segue identifier" And what you did is very different for testing purpose &#9;override func prepare(for segue: UIStoryboardSegue, sender: Any?) { &#9;if segue.identifier == "r" { &#9;&#9;print("segue identifier", segue.identifier) // You put in the if that we know is not called ! It is key to check you call the RIGHT segue &#9;&#9;let hockeyDetailVC: HockeyDetailVC = segue.destination as! HockeyDetailVC &#9;&#9;hockeyDetailVC.delegate = self &#9;&#9;print("destination HockeyDetailVC is", hockeyDetailVC) &#9;} }

Is it Swift UIKit or SwiftUI ? Did you try calling func setNeedsDisplay(NSRect) on the frame of the label ?

Your question is not very clear. Do you want to print (where ?) or do you want to display the matrix on screen in a Label, TextField, TextView ? To print in log, simply do: for x in xo { print(x) }

Replace calls to viewDidLoad by call to view.setNeedsDisplay. If data are displayed in tableView, call table.reload()

Do you use animation in your code ? Could you show the code where the app crashes ?