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Access essential data types, collections, and operating-system services to define the base layer of functionality for your app using Foundation.

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Hi, I am having this rare issues, where a handful of my users are crashing when trying to access their realm file. This is the error I'm seeing: Fatal error: 'try!' expression unexpectedly raised an error: Error Domain=io.realm Code=3 "Failed to open file at path '/var/mobile/Containers/Data/Application/BCA5E4BC-5923-4D7E-8142-AB49B32A7E59/Documents/default.realm.lock': Operation not permitted" UserInfo={Error Code=3, NSFilePath=/var/mobile/Containers/Data/Application/BCA5E4BC-5923-4D7E-8142-AB49B32A7E59/Documents/default.realm.lock, Error Name=PermissionDenied, NSLocalizedDescription=Failed to open file at path '/var/mobile/Containers/Data/Application/BCA5E4BC-5923-4D7E-8142-AB49B32A7E59/Documents/default.realm.lock': Operation not permitted} and I can report that for all for those users, it seems that identiferForVendor has returned nil. So it looks like that's the common denominator. Any idea on what other data I can log or what's the issue here? Thanks..!
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by wotson.
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I tried doing the outlets for all the controls, then making a nsview in the method for a button that declares a view, then I set initwithframe to be sent to a variable typed 'id' and accessing that variable I was able to add nsbuttoncell to the variable, then I added the subview to the. main tableview here's the code I used: NSView *viewptr = [[NSView alloc]init]; NSButtonCell *bCell1 = [[NSButtonCell alloc]init]; NSRect rect; [bCell1 setTitle:@"click"]; rect.size.width = 2; rect.size.height = 1; id temp,x; temp = [viewptr initWithFrame:rect]; [temp addObject:bCell1]; [_cocoa_test_scrollview addSubview:temp]; is there anything im missing? the app keeps crashing and spiting out debug messages, like: -[NSView addObject:]: unrecognized selector sent to instance 0x12ee0ae60 ( 0 CoreFoundation 0x0000000186efaccc __exceptionPreprocess + 176 1 libobjc.A.dylib 0x00000001869e2788 objc_exception_throw + 60 2 CoreFoundation 0x0000000186fad02c -[NSObject(NSObject) __retain_OA] + 0 3 CoreFoundation 0x0000000186e64cdc forwarding + 1580 4 CoreFoundation 0x0000000186e645f0 _CF_forwarding_prep_0 + 96 5 objc_cocoa_test_image_3 0x0000000100608ca4 -[AppDelegate cocoa_test_button1_add:] + 264 6 AppKit 0x000000018a881c70 -[NSApplication(NSResponder) sendAction:to:from:] + 460 7 AppKit 0x000000018a881a74 -[NSControl sendAction:to:] + 72 8 AppKit 0x000000018a8819b8 __26-[NSCell _sendActionFrom:]_block_invoke + 100 9 AppKit 0x000000018a8818e0 -[NSCell _sendActionFrom:] + 204 10 AppKit 0x000000018a881804 -[NSButtonCell _sendActionFrom:] + 88 11 AppKit 0x000000018a87ee38 NSControlTrackMouse + 1480 12 AppKit 0x000000018a87e844 -[NSCell trackMouse:inRect:ofView:untilMouseUp:] + 144 13 AppKit 0x000000018a87e6fc -[NSButtonCell trackMouse:inRect:ofView:untilMouseUp:] + 488 14 AppKit 0x000000018a87dbd0 -[NSControl mouseDown:] + 448 15 AppKit 0x000000018a87c99c -[NSWindow(NSEventRouting) _handleMouseDownEvent:isDelayedEvent:] + 3472 16 AppKit 0x000000018a807f78 -[NSWindow(NSEventRouting) _reallySendEvent:isDelayedEvent:] + 364 17 AppKit 0x000000018a807c38 -[NSWindow(NSEventRouting) sendEvent:] + 284 18 AppKit 0x000000018aecde70 -[NSApplication(NSEventRouting) sendEvent:] + 1604 19 AppKit 0x000000018ab1b8cc -[NSApplication _handleEvent:] + 60 20 AppKit 0x000000018a6cfcdc -[NSApplication run] + 512 21 AppKit 0x000000018a6a6f54 NSApplicationMain + 880 22 objc_cocoa_test_image_3 0x0000000100608a68 main + 60 23 dyld 0x0000000186a1e0e0 start + 2360 ) can anyone point me in the right direction?
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by unidef.
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Your app or its metadata does not appear to include complete and final content. Specifically, your app description needs to describe in-app features and functionality. App Store users expect the apps they download to be ready for public use. Apps on the store shouldn't include placeholder or incomplete content or information. Next Steps To resolve this issue, please revise your app and metadata so that all of its content is complete and final. For example: Your app binary or metadata should not include "lorem ipsum" text. App metadata should not include placeholder screenshots, such as "screenshot coming soon." Provide an engaging app description that highlights the features and functionality of your app. I received this mail, I made required changes still getting this
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by Dhawant.
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I have used [[NSDistributedNotificationCenter defaultCenter] addObserver in process AA to listen notification from other process BB, It works fine. But when make the observer process AA as a launch daemon (which is started by launchd), It found below difference. If run process BB as root privilege, AA can not receive notification posted by BB. If make process BB as a launch daemon, AA can receive notification posted by BB. What was happened in above difference, It can not find any document about this, Thanks.
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Xcode Version 15.0.1 (15A507) Crash log Hardware Model: iPhone14,7 Code Type: ARM-64 (Native) Role: Foreground Parent Process: launchd [1] OS Version: iPhone OS 16.6 (20G75) Release Type: User Baseband Version: 1.80.02 Report Version: 104 Exception Type: EXC_CRASH (SIGABRT) Triggered by Thread: 26 Application Specific Information: abort() called Last Exception Backtrace: 0 CoreFoundation 0x1b3c54cb4 __exceptionPreprocess + 164 1 libobjc.A.dylib 0x1accf03d0 objc_exception_throw + 60 2 Foundation 0x1adf6950c -[NSData(NSData) _base64EncodingAsString:withOptions:] + 1072 3 Foundation 0x1ae2cf8bc Data.base64EncodedString(options:) + 640 ... 6 libdispatch.dylib 0x1bb11a320 _dispatch_call_block_and_release + 32 7 libdispatch.dylib 0x1bb11beac _dispatch_client_callout + 20 8 libdispatch.dylib 0x1bb11ef8c _dispatch_queue_override_invoke + 788 9 libdispatch.dylib 0x1bb12d944 _dispatch_root_queue_drain + 396 10 libdispatch.dylib 0x1bb12e158 _dispatch_worker_thread2 + 164 11 libsystem_pthread.dylib 0x213a85da0 _pthread_wqthread + 228 Thread 26 name: Dispatch queue: com.apple.root.default-qos Thread 26 Crashed: 0 libsystem_kernel.dylib 0x1f2c11578 __pthread_kill + 8 1 libsystem_pthread.dylib 0x213a8c118 pthread_kill + 268 2 libsystem_c.dylib 0x1bb17c178 abort + 180 3 libc++abi.dylib 0x2139cabf8 abort_message + 132 4 libc++abi.dylib 0x2139ba444 demangling_terminate_handler() + 348 5 libobjc.A.dylib 0x1accf5ea4 _objc_terminate() + 144 6 libc++abi.dylib 0x2139c9fbc std::__terminate(void (*)()) + 16 7 libc++abi.dylib 0x2139c9f60 std::terminate() + 56 8 libdispatch.dylib 0x1bb11bec0 _dispatch_client_callout + 40 9 libdispatch.dylib 0x1bb11ef8c _dispatch_queue_override_invoke + 788 10 libdispatch.dylib 0x1bb12d944 _dispatch_root_queue_drain + 396 11 libdispatch.dylib 0x1bb12e158 _dispatch_worker_thread2 + 164 12 libsystem_pthread.dylib 0x213a85da0 _pthread_wqthread + 228 13 libsystem_pthread.dylib 0x213a85b7c start_wqthread + 8 12 libsystem_pthread.dylib 0x213a85b7c start_wqthread + 8 My code private func encodeStringTo64(fromString: String) -> String? { let plainData = fromString.data(using: .utf8) return plainData?.base64EncodedString(options: []) } Call foundation method extension Data { ... /// Returns a Base-64 encoded string. /// /// - parameter options: The options to use for the encoding. Default value is `[]`. /// - returns: The Base-64 encoded string. @inlinable public func base64EncodedString(options: Data.Base64EncodingOptions = []) -> String } Description This foundation method don't have throws, but it throw an exception. It will cause a crash.
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I'm getting the following error @main: Thread 1: EXC_BREAKPOINT (code=1, subcode=0x1886cdcf8). It occurs about every other time someone attempts to log in to the app. Also I cannot replicate this issue on the simulator -- only on physical devices.
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Im using Notions API to print out some data from one of my own pages in notion and im using URLSession to make the request then parsing the unwrapped data but nothing is being returned to my console and I know my endpoint and API key is correct. I've gone through the notion API documentation can't can't seem to find anything in it that I am not doing or doing wrong. Ill provide my code as well as the documentation I've been consulting: https://developers.notion.com/reference/intro import Foundation struct Page: Codable { let id: String let title: String } let endpoint = URL(string: "https://api.notion.com/v1/pages/8efc0ca3d9cc44fbb1f34383b794b817") let apiKey = "… redacted …" let session = URLSession.shared func makeRequest() { if let endpoint = endpoint { let task = URLSession.shared.dataTask(with: endpoint) { data, response, error in if let taskError = error { print("could not establish url request:\(taskError)") return } if let unwrapData = data { //safely unwrapping the data value using if let do { let decoder = JSONDecoder() //JSONDecoder method to decode api data, let codeUnwrappedData = try decoder.decode(Page.self,from: unwrapData) //type: specifies its a struct, from: passes the data parmeter that contains the api data to be decoded } catch { print("could not parse json data") } } if let httpResponse = response as? HTTPURLResponse { if httpResponse.statusCode == 200 { if let apiData = data { print(String(data: apiData, encoding: .utf8)!) } } else { print("unsuccessful http response:\(httpResponse)") } makeRequest() } } task.resume() } }
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by Aor1105.
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My app always crash when I trying to assign an enum to a value of[String: Any] only on iOS14.6, tested on iOS15, iOS16, iOS17, never saw this issue. The function would pass an ConnectState enum and a serial number string to a userInfo of notification, received class may perform some UI updates when connect state changed. func post(state: ConnectState, serial: Int) { var userInfo: [String: Any] = [:] userInfo["state"] = state userInfo["serial"] = serial print(userInfo) NotificationCenter.default.post(name: NSNotification.Name("PostName"), object: nil, userInfo: userInfo) } @objc enum ConnectState: UInt8 { case connected = 0x00 case disConnected = 0x01 var description: String { switch self { case .connected: return "connected" case .disConnected: return "disConnected" } } } Classes received this notification, may perform some task based on connect state changed. class AClass { init() { NotificationCenter.default.addObserver(self, selector: #selector(handleNotification(_:)), name: NSNotification.Name("PostName"), object: nil) } @objc func handleNotification(_ notification :Notification) { let state = notification.userInfo?["state"] as! ConnectState print("AClass handleNotification: \(state.description)") } } let a = AClass() post(state: .disConnected, serial: 123456) post(state: .connected, serial: 123456) //["serial": 123456, "state": __lldb_expr_3.ConnectState] //AClass handleNotification: disConnected //["serial": 123456, "state": __lldb_expr_3.ConnectState] //AClass handleNotification: connected The crashes always happened in the line that assigning the ConnectState enum to dictionary [String: Any] value, both connect state and serialNumber are not nil or optional. I'm not sure why would this related to a allocate issue, is my code wrong? AppName(645,0x16f61f000) malloc: can't allocate region :*** mach_vm_map(size=1152921504606863360, flags: 100) failed (error code=3) AppName(645,0x16f61f000) malloc: *** set a breakpoint in malloc_error_break to debug ```Since we only have one iOS14.6 device, it will be a challenge to test on other same iOS version device, nor test on simulator.
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by Rimbaud.
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Hi together, i have truble to parse an json with an array like following: "data": [ [ 0000000000, [ { "count": 0 } ] ], [ 0000000000, [ { "count": 0 } ] ] ], Can someone help me to parse that with the this? Thanks
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by clemens68.
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I recently re-read Performing manual server trust authentication and noticed that it does not mention having to call SecTrustEvaluate (or its replacements) in client code (anymore). Is that implicitly taken care of by ATS?
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by jzilske.
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It seems that the first time I open my app after the phone is restarted, the app does not properly access UserDefaults. When my app is launched, I pull relevant user settings / preferences from UserDefaults. I recently noticed (after some users reached out about issues) that the first time the app is opened after a restart, the app appears as though all user settings / preferences have been erased. If the app is force quit and reopened, the user data seems to come back normally. If the user takes action in the app before force quitting, though, UserDefaults will be written to with these new, empty values (essentially erasing what used to be in UserDefaults). This makes it seem as though right after the phone is restarted, the app is unable to pull data from UserDefaults for some reason. Has anyone else seen this issue? It could also be due to the lifecycle of my app and how I access UserDefaults, so if others don't have this issue it would be great to hear how you handle this.
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I have a repeating timer installed like this: _cmdTimer = [NSTimer timerWithTimeInterval: 0.5 target: self selector: @selector(timedTask:) userInfo: nil repeats: YES]; [NSRunLoop.mainRunLoop addTimer: _cmdTimer forMode: NSModalPanelRunLoopMode]; [NSRunLoop.mainRunLoop addTimer: _cmdTimer forMode: NSDefaultRunLoopMode]; The first time the timer fires, it opens a modal dialog. But then the timer does not fire again until the dialog is closed. I don't get that, since I scheduled the timer in NSModalPanelRunLoopMode. To verify that the dialog was running in that mode, just before opening the dialog I said [self performSelector: @selector(testMe) withObject: nil afterDelay: 0.7 inModes: @[NSModalPanelRunLoopMode] ]; and the testMe method did get executed while the dialog was open.
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by JWWalker.
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I have a file named ä.txt (with German umlaut) on my FTP server. I select it like this: let openPanel = NSOpenPanel() openPanel.runModal() let source = openPanel.urls[0] Running this code unexpectedly throws an error: do { print(try source.checkResourceIsReachable()) } catch { print(error) // Error Domain=NSPOSIXErrorDomain Code=2 "No such file or directory” } Manipulating the URL also seems to change the underlying characters: print(source) // file:///Volumes/abc.com/httpdocs/%C3%A4.txt print(URL(fileURLWithPath: source.path)) // file:///Volumes/abc.com/httpdocs/a%CC%88.txt Note that both variants of the URL above also throw the same error when running URL.checkResourceIsReachable(). If I download the file to my Mac, then both variants print file:///Users/me/Downloads/a%CC%88.txt and neither of them throws an error when running URL.checkResourceIsReachable(). What is the problem? How can I correctly access this file on the FTP server?
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by Nickkk.
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First of all, I decided to make my project with only UIKit. So I deleted 'Main' storyboard, Info.plist->Storyboard name, and Main storyboard file base name->Main. And I edited SceneDelegate. So now I can display the single viewControllers, but when I try to set 'UITabBarController' to rootViewController, It cause this error(title). I tried to make UITabBarController in ViewController, UITabBarController in SceneDelegate and some more. // BackgroundViewController for the rootViewController import UIKit class BackgroundViewController: UIViewController { let backgroundTabBarController = UITabBarController() override func viewDidLoad() { super.viewDidLoad() view.backgroundColor = .white createTabBar() } } extension BackgroundViewController { private func createTabBar() { view.backgroundColor = .white view.addSubview(backgroundTabBarController.view) let firstViewController = BookSearchViewController() let secondViewController = MainViewController() let thirdViewController = UserStatusViewController() let lastViewController = OrderViewController() firstViewController.tabBarItem = UITabBarItem(title: "Search", image: UIImage(systemName: "magnifyingglass.circle.fill"), selectedImage: UIImage(systemName: "magnifyingglass.circle")) secondViewController.tabBarItem = UITabBarItem(title: "Main", image: UIImage(systemName: "house.fill"), selectedImage: UIImage(systemName: "house")) thirdViewController.tabBarItem = UITabBarItem(title: "My", image: UIImage(systemName: "person.fill"), selectedImage: UIImage(systemName: "person")) lastViewController.tabBarItem = UITabBarItem(title: "Order", image: UIImage(systemName: "menucard.fill"), selectedImage: UIImage(systemName: "menucard")) backgroundTabBarController.viewControllers = [firstViewController, secondViewController, thirdViewController, lastViewController] backgroundTabBarController.selectedViewController = secondViewController } } // SceneDelegate import UIKit class SceneDelegate: UIResponder, UIWindowSceneDelegate { var window: UIWindow? func scene(_ scene: UIScene, willConnectTo session: UISceneSession, options connectionOptions: UIScene.ConnectionOptions) { guard let windowScene = (scene as? UIWindowScene) else { return } window = UIWindow(windowScene: windowScene) window?.rootViewController = BackgroundViewController() window?.makeKeyAndVisible() } } // Error code Thread 1: "Could not find a storyboard named 'Main' in bundle NSBundle </Users/[MyDesktopName]/Library/Developer/CoreSimulator/Devices/[ApplicationName]/data/Containers/Bundle/Application/[ApplicationName]/BTY.app> (loaded)" But anyone of this solve the problem. How can I make UITabBarController to rootViewController? Make UITabBarController in SceneDelegate Make new UIViewController that have UITabBarController and set to rootViewController Set ViewControllers with 'UINavigationController(rootViewController:)' Present UITabBarController from other viewController
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by J_ROLF.
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We use UserDefaults in our app to identify if we already showed a particular UI to the user (so that it will not be shown to the user again). Our logic goes something like: if !UserDefaults.standard.alreadyShownToUser { showUI() UserDefaults.standard.alreadyShownToUser = true } But there are users who see this particular screen again when they open the app. The screen does not show up for a few days, and then suddenly, it shows up again. Our theory is that this might have something to do with iOS Prewarming. So we updated our code to add another check: if UIApplication.shared.isProtectedDataAvailable && !UserDefaults.standard.alreadyShownToUser However, it does NOT seem to work / mitigate the issue at all. We also added logs to check the value of UIApplication.shared.isProtectedDataAvailable and the value of the UserDefaults variable. We expected that if: UIApplication.shared.isProtectedDataAvailable is false, then the UserDefaults value should also be false. But in our logs, we can see that UIApplication.shared.isProtectedDataAvailable is false, but UserDefaults still returned true. Which led me to think that UserDefaults is not affected by Prewarming. Now, I'm back from the start. What's causing our UserDefaults to have different value? We also do not have anywhere else in the app that sets the value of UserDefaults.standard.alreadyShownToUser to false. The only time it should have that value is when the user installs the app for the first time. I appreciate any help that can lead me to fix this issue. Thank you!
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by JennEve.
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i have a save function: func save(){ if let encoded = try? JSONEncoder().encode(routes) { UserDefaults.standard.set(encoded, forKey: saveKey) } } and an init function: init() { if let data = UserDefaults.standard.data(forKey: saveKey){ print(data.base64EncodedString) if let decoded = try? JSONDecoder().decode([RouteObject].self, from: data) { routes = decoded return } } routes = [] } onload this initiation there is no data. but 3382 bytes how get I the content form data? i don't know where the error is? debug is not possible I did get the info
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I use UserDefaults to store a variety of user data / preferences. Recently, I have started getting somewhat frequent complaints from users that their settings have been reset. There doesn't appear to be a rhyme or reason to the issue (some users have all of their data reset just once, while others are seeing that one of their settings resets very frequently). I haven't been able to pinpoint what the root cause is, but I figure that it must have something to do with UserDefaults (either all of it or only certain keys) somehow getting erased. As I figure out the root cause, I figure that a good solution in the meantime is to backup UserDefaults in some way (e.g. perhaps to iCloud?). Is there a standard / best-practice way of doing this?
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I'm developing iOS framework with Objective C. I create a dispatch_queue_t by using dispatch_queue_create. And call CFRunLoopRun() for run the Runloop in the queue. But, It looks like the dispatch_queue_t has share the RunLoop. Some classes has add an invalid timer, and when I call the CFRunLoopRun(), It crashed on my side. Sample code: - (void)viewDidLoad { [super viewDidLoad]; self.queue1 = dispatch_queue_create("com.queue1", DISPATCH_QUEUE_CONCURRENT); self.queue2 = dispatch_queue_create("org.queue2", DISPATCH_QUEUE_CONCURRENT); } - (IBAction)btnButtonAction:(id)sender { dispatch_async(self.queue1, ^{ NSString *runloop = [NSString stringWithFormat:@"%@", CFRunLoopGetCurrent()]; runloop = [runloop substringWithRange:NSMakeRange(0, 22)]; NSLog(@"Queue1 %p run: %@", self.queue1, runloop); //NSTimer *timer = [[NSTimer alloc] initWithFireDate:[NSDate date] interval:1 target:self selector:@selector(wrongSeletor:) userInfo:nil repeats:NO]; //[[NSRunLoop currentRunLoop] addTimer:timer forMode:NSRunLoopCommonModes]; }); dispatch_async(self.queue2, ^{ NSString *runloop = [NSString stringWithFormat:@"%@", CFRunLoopGetCurrent()]; runloop = [runloop substringWithRange:NSMakeRange(0, 22)]; NSLog(@"Queue2 %p run: %@", self.queue2, runloop); CFRunLoopRun(); }); } Some time they take same RunLoop: https://i.stack.imgur.com/wGcv3.png ===== You can see the crash by uncomment the code of NSTimer. The NSTimer has been added in queue1, but it still running when call CFRunLoopRun() in queue2. I have read some description like: https://stackoverflow.com/questions/38000727/need-some-clarifications-about-dispatch-queue-thread-and-nsrunloop They told that: "system creates a run loop for the thread". But, in my check, they are sharing the RunLoop. This is sad for me, because I facing that crashes happen when calling CFRunLoopRun() on production. Can someone take a look at this.
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by ninh.asus.
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