Hi, i have only seen for loop samples that involve indexes or using for item in items. I come from a java background and i cannot seem to confirm if this can actually be converted to a swift for loop. thoughts? for (EdgeNode edge = aet.topNode ; (edge != null); edge = edge.next)

My sample function is this func temp(type: String, callback: (() -> Void)? = nil) { callback?() } But why can't I do this? temp(type: "Here", () -> { print("hey") }) It says, Expected type after '->' While this does work temp(type: "Here", { () -> Void in print("hey") }) I find it weird why the () -> Void has to be inside the closure.

So ive read there is no feature in the Foundation package that outputs a date only object. Ive tried variations seen in forum posts. One of them is like this. But i am confused why the output is always 16:00:00 +0000 for the time instead of 00:00:00 +0000? This is the code Calendar.current.date(bySettingHour: 0, minute: 0, second: 0, of: Date())! 16:00:00 is 4PM. Instead of 12:00AM When I run it in this site online swift playground https://online.swiftplayground.run/ i get this output 2023-02-26 23:00:00 +0000 I figure this could be because of timezone. But is there a way to get a date object where the value of time is midnight? 00:00:00? Thoughts?

This is my current view. Instead of a List, I use a LazyVStack wrapped under a ScrollView. .onAppear does not seem to work here. I assumed it runs when the view is visible on the screen. My goal is when the footer is visible, it always runs a Task. What could be wrong? @State private var cities: [City]? @State private var index = 0 @State private var showFooter = true func content(_ cities: [City]) -> some View {     return GeometryReader { geometryProxy in       ScrollView {         LazyVStack(alignment: .leading, spacing: 0) {           if cities.count > 0 {             ForEach(cities) { city in               HStack {                 Text(city.header)                   .bold()                   .foregroundColor(.white)                   .textCase(.uppercase)                   .padding(.all, 8)                 Spacer()               }               .background(Color(UIColor(named: PrefTool.instance.getBoolean(Keyword.DARK_MODE) ? "DarkerGray" : "DarkGray")!))                             ForEach(city.businesses) { busines in                   Text(business.name)                  Divider()               }             }           }           else {             Text("Empty List")           }         }         .safeAreaInset(edge: .bottom, spacing: 0) {           if showFooter {             VStack {               Text("Footer")             }             .padding()             .frame(maxWidth: .infinity)             // The background will extend automatically to the edge             .background(Color.green)             .onAppear {               Task {                 do {                   let moreList = try await getMoreCities(index)                   showFooter = false                   if !moreList.isEmpty {                     cities?.append(contentOf: moreList)                     showFooter = true                   }                 } catch {                   showFooter = false                 }               }             }           }         }       }     }   } This is used inside body var body: some View { content(cities) } Thoughts? What is a good way to show a footer and then run a task when it is visible in the screen.

Hi . I am following the simple example from hacking with swift website. It is to request a location. import CoreLocation import CoreLocationUI class LocationManager: NSObject, ObservableObject, CLLocationManagerDelegate {   let manager = CLLocationManager()   @Published var location: CLLocationCoordinate2D?   override init() {     super.init()     manager.delegate = self   }   func requestLocation() {     manager.requestLocation()   }   func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {     print("hehe")     location = locations.first?.coordinate   } } In the view. I have some custom button that when clicked, will call locationManager.requestLocation() but it gives this error message Updates[14291:194102] *** Assertion failure in -[CLLocationManager requestLocation], CLLocationManager.m:1339 *** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'Delegate must respond to locationManager:didFailWithError:' *** First throw call stack: ( 0  CoreFoundation           0x0000000111b3a8cb __exceptionPreprocess + 242 1  libobjc.A.dylib           0x000000010d4efba3 objc_exception_throw + 48 2  Foundation             0x0000000116b3837c _userInfoForFileAndLine + 0 3  CoreLocation            0x000000010c1baf65 CLClientStopVehicleHeadingUpdates + 52782 7  SwiftUI               0x0000000113c6f5dc __swift_memcpy160_4 + 113486 8  SwiftUI               0x0000000113c6fe8d __swift_memcpy160_4 + 115711 9  SwiftUI               0x0000000113c6fdff __swift_memcpy160_4 + 115569 10 SwiftUI               0x00000001140a4270 objectdestroy.142Tm + 41347 11 SwiftUI               0x00000001140a4284 objectdestroy.142Tm + 41367 12 SwiftUI               0x00000001140a4270 objectdestroy.142Tm + 41347 13 SwiftUI               0x0000000113dba491 block_destroy_helper + 36990 14 SwiftUI               0x0000000113db9df2 block_destroy_helper + 35295 15 SwiftUI               0x0000000113f4b7a5 _callVisitToolbarContentType2 + 4011 16 SwiftUI               0x00000001146fa7c8 _callVisitStyleContextType2 + 11258 17 SwiftUI               0x00000001146f8e5e _callVisitStyleContextType2 + 4752 18 SwiftUI               0x00000001146f8f42 _callVisitStyleContextType2 + 4980 19 SwiftUI               0x00000001146f8720 _callVisitStyleContextType2 + 2898 20 UIKitCore              0x0000000120b384b9 -[UIGestureRecognizer _componentsEnded:withEvent:] + 153 21 UIKitCore              0x00000001211d7ebd -[UITouchesEvent _sendEventToGestureRecognizer:] + 662 22 UIKitCore              0x0000000120b286f7 -[UIGestureEnvironment _updateForEvent:window:] + 469 23 UIKitCore              0x000000012117aedb -[UIWindow sendEvent:] + 5282 24 UIKitCore              0x000000012114e7f2 -[UIApplication sendEvent:] + 898 25 UIKitCore              0x00000001211f5e61 __dispatchPreprocessedEventFromEventQueue + 9381 26 UIKitCore              0x00000001211f8569 __processEventQueue + 8334 27 UIKitCore              0x00000001211ee8a1 __eventFetcherSourceCallback + 272 28 CoreFoundation           0x0000000111a9a035 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 17 29 CoreFoundation           0x0000000111a99f74 __CFRunLoopDoSource0 + 157 30 CoreFoundation           0x0000000111a997d1 __CFRunLoopDoSources0 + 308 31 CoreFoundation           0x0000000111a93e73 __CFRunLoopRun + 927 32 CoreFoundation           0x0000000111a936f7 CFRunLoopRunSpecific + 560 33 GraphicsServices          0x000000011985b28a GSEventRunModal + 139 34 UIKitCore              0x000000012112d62b -[UIApplication _run] + 994 35 UIKitCore              0x0000000121132547 UIApplicationMain + 123 36 SwiftUI               0x00000001146b2cfb __swift_memcpy93_8 + 10826 37 SwiftUI               0x00000001146b2ba8 __swift_memcpy93_8 + 10487 38 SwiftUI               0x0000000113d68b7d __swift_memcpy195_8 + 12271 41 dyld                0x000000010be3d2bf start_sim + 10 42 ???                 0x0000000203a3d310 0x0 + 8651002640 ) libc++abi: terminating with uncaught exception of type NSException Message from debugger: Terminated due to signal 6 I really have no clue what is going on. It does not enter some breakpoint, it just crashes. Anything I am missing? Also, i could not find anything in the LocationManager regarding a callback when the location is retrieved? or it is a manual workaround that has to be done for this case? the issue may be because i need to include the function func locationManager( _ manager: CLLocationManager, didFailWithError error: Error ) but adds another question. Why do i get Error Domain=kCLErrorDomain Code=1 "(null)"

Anyone got sample code for using AVPlayerLooper in SwiftUI? Code i see are not for SwiftUI I only wish to have the option to turn on auto-repeat on and off. I could use AVQueuePlayer as replacement for AVPlayer but it does not have a way to loop. So these are what I am looking for Loop video in SwiftUI If Using AVPlayerLooper, it has a disableLooping() function (possibly to turn off looping). But how can it be turned back on? There is no enableLooping(). Or does it need a new instance? since i am new to iOS, the code there are all linked to no swift ui code so I have no clue (sorry) the equivalent of them in SwiftUI Thoughts?

Hi all. I am not sure what is wrong with my current code. What I am looking to do is change all values of a string with a substring of "around #C" where # is the temperature. I am converting between farenheit and celsius and i wish to get all substrings then change the correct value depending on the current setting. So if i have a string where "This is today. The temperature is around 14C. Tomorrow the temperature will be around 18C" So the regex would get "around 14C" and "around 18C" and change the values to farenheit. Result would be something like "This is today. The temperature is around -1F. Tomorrow the temperature will be around -4F" This is my function. func formatCorrectDetail(_ detail: String, _ isCelsius: Bool) -> String {     let regex = try! NSRegularExpression(pattern: "around ((\\d+)" + (isCelsius ? "F" : "C") + ")", options: [])     let matches = regex.matches(in: detail, options: [], range: NSRange(location: 0, length: detail.utf16.count))     let formattedString = NSMutableString(string: detail)     for match in matches {       let range = match.range(at: 2)       if let rangeSubstring = Range(range, in: detail),         let temperature = Double(String(detail[rangeSubstring])) {         let val = isCelsius ? NumberTool.far2cel(temperature) : NumberTool.cel2far(temperature)         formattedString.replaceCharacters(in: range, with: val)       }     }     if formattedString.length > 0 {       return String(formattedString)     }     else {       return detail     }   } The NumberTool.far2cel() and NumberTool.cel2far() are my custom functions to convert between celsius and farehnheit. Thoughts?

Hi, what do you think is wrong with the fucntion. This is what I have. Could it be because of the roundmode type used? static func roundOff(_ val: String, _ decimalPlace: Int) -> String {     let decimalFormatter = createDecimalFormatter()     decimalFormatter.minimumFractionDigits = decimalPlace     decimalFormatter.maximumFractionDigits = decimalPlace     let bigDecimal = NSDecimalNumber(string: val)     return decimalFormatter.string(from: bigDecimal.rounding(accordingToBehavior: NSDecimalNumberHandler(roundingMode: .up, scale: Int16(decimalPlace), raiseOnExactness: false, raiseOnOverflow: false, raiseOnUnderflow: false, raiseOnDivideByZero: false)))!   }   static func roundOff(_ value: Double, _ decimalPlace: Int) -> String {     return roundOff(String(value), decimalPlace)   } roundOf("75.2", 0) returns 76 instead of 75

This is my struct view for the overflow menu struct OverflowMenu: View {   var body: some View {     Menu {       NavigationLink(destination: SettingView()) {         Label{           Text("Settings")         }         icon: {           Awesome.Solid.cog.image             .foregroundColor(UIColor(hex: "#ffbd16"))         }       }     } label: {       Image(systemName: "ellipsis.circle")     }   } } Nothing happens when the button is clicked. The SettingsView is not shown in a new window. And the OverflowMenuView() is inside the NavigationView. Am i missing something else? var body: some View {     NavigationView { ..... HStack {                 Spacer()                 OverflowMenu()           } } }