Thanks. I'm not sure how that helps, though. In the meantime, Paul from Hacking with Swift shows how the List guy works. I've tested the exact lines of code he has, and the selection symbol doesn't appear, either. That's odd. The article is not even one year old. By the way, I'm using Xcode 14.3. https://www.hackingwithswift.com/quick-start/swiftui/how-to-allow-row-selection-in-a-list

Hmm... I'm sorry. I realize that I should have done that. I cannot edit the topic any more.

It's cheesy, but I guess one way of doing it is to use Circle().stroke.

I got it.

I guess it's the matter of setting a preset to AVCaptureSession.

If I set the preset to captureSession.sessionPreset = .hd1280x720 , I get a different image.

I've ended up with the following lines of code. func prepareCamera(cameraCase: CameraCase) { /* removing existing layers */ if let sublayers = self.view.layer.sublayers { for sublayer in sublayers { if sublayer.isKind(of: AVCaptureVideoPreviewLayer.self) { sublayer.removeFromSuperlayer() } } } /* creating a capture session */ captureSession = AVCaptureSession() guard let device = AVCaptureDevice.DiscoverySession(deviceTypes: [.builtInWideAngleCamera], mediaType: AVMediaType.video, position: cameraCase == .front ? .front : .back).devices.first else { return } let videoInput = try? AVCaptureDeviceInput(device: device) if captureSession.canAddInput(videoInput!) { captureSession.addInput(videoInput!) imagePhotoOutput = AVCapturePhotoOutput() // setting output destination captureSession.addOutput(imagePhotoOutput) // adding photo output to session } /* creating a capture layer */ let previewLayer: AVCaptureVideoPreviewLayer = AVCaptureVideoPreviewLayer.init(session: captureSession) previewLayer.videoGravity = AVLayerVideoGravity.resizeAspect /* adding video capture layer to the view layer */ self.view.layer.addSublayer(previewLayer) /* starting capture session */ DispatchQueue.global(qos: .background).async { self.captureSession.startRunning() } }

Oops... The position argument is the other way around.

It looks like it cannot be used on a non-Apple silicon Mac.

I've used a custom sorting method with enum in reference to a topic at stack overflow.. (the one written by Martin R...)

when we use access a dataset in Realm -> when we access a dataset in Realm

It sounds like I've screwed up a big time according to RayWenderlich's article. https://www.raywenderlich.com/697468-ios-file-provider-extension-tutorial

The following would work except that I'm required to use Binding. struct ContentView: View { @State var username = "" @State var password = "" @State var tenantID = "" var body: some View { VStack { makeForm(label: "Username: ", placeHolder: "123456", text: $username) makeForm(label: "Password: ", placeHolder: "abcdefg", text: $password) //makeForm(label: "Shop ID: ", placeHolder: "Amazon River Branch", text: $tenantID) HStack { Text("Shop ID: ") TextField("Amazon River Branch", text: $tenantID) .onChange(of: tenantID) { newValue in tenantID = textFilter(value: newValue) } } }.padding(.horizontal, 40.0) } @ViewBuilder private func makeForm(label: String, placeHolder: String, text: Binding<String>) -> some View { HStack { let newText = Binding<String>( get: { text.wrappedValue }, set: { text.wrappedValue = textFilter(value: $0) } ) Text(label) TextField(placeHolder, text: newText) } } func textFilter(value: String) -> String { let pattern = "[^A-Za-z0-9]+" return value.replacingOccurrences(of: pattern, with: "", options: [.regularExpression]) } }

I think I cannot use Binding. Instead, I think I need to use TextField with .onChange.

The warning will disappear with the following, but the text entry won't be filtered. set: { text.wrappedValue = filter(value: $0) }