I have created my own SPM through File -> New -> Package Package.swift looks like: // swift-tools-version: 5.10 // The swift-tools-version declares the minimum version of Swift required to build this package. import PackageDescription let package = Package( name: "MyPackage", platforms: [.iOS(.v16), .macCatalyst(.v16), .macOS(.v14)], products: [.library(name: "MyPackage", targets: ["MyPackage"]),], dependencies: [ .package(path: "../external-package") ], targets: [ .target(name: "MyPackage", path: "Sources"), .testTarget(name: "MyPackageTests", dependencies: ["MyPackage"]), ] ) When I run swift build the error says: '.../MyPackage/.build/arm64-apple-macosx/debug/external-package.build/external-package-Swift.h' not found and surely, when I go to directory: .../MyPackage/.build/arm64-apple-macosx/debug/external-package.build/ there are only 2 files in there: module.modulemap & output-file-map.json All source files from external-package are missing, therefore swift build fails. The only solution I've found is to copy external-package.build folder manually into: '.../MyPackage/.build/arm64-apple-macosx/debug/` What am I missing here? Should swift build create those files in there, or they should be resolved somehow differently? Note: external-package is not in any way unique, this happens to any added dependency I'm running on macOS 14.6.1 on Apple Silicon M1 Pro with Xcode 15.4

There are some reliable and affordable Polar H10 ECG reader apps available on the App Store: I’ve been using one for a couple of years. However, I recently needed to incorporate an ECG capability into an app that already uses the Polar H10 for RR Interval monitoring, but the documentation online for Polar ECG is scarce and sometimes incorrect. Polar provides an SDK, but this covers many different devices and so is quite complex. Also, it’s based on RxSwift - which I prefer not to use given that my existing app uses native Swift async and concurrency approaches. I therefore offer this description of my solution in the hope that it helps someone, somewhere, sometime. The Polar H10 transmits ECG data via Bluetooth LE as a stream of frames. Each frame is length 229 bytes, with a 10 byte leader and then 73 ECG data points of 3 bytes each (microvolts as little-endian integer, two’s complement negatives). The leader’s byte 0 is 0x00, bytes 1 - 8 are a timestamp (unknown epoch) and byte 9 is 0x00. The H10’s sampling rate is 130Hz (my 2 devices are a tiny fraction higher), which means that each frame is transmitted approximately every half second (73/130). However, given the latencies of bluetooth transmission and the app’s processing, any application of a timestamp to each data point should be based on a fixed time interval between each data point, i.e. milliseconds interval = 1000 / actual sampling rate. From my testing, the time interval between successive frame timestamps is constant and so the actual sampling interval is that interval divided by 73 (the number of samples per frame). I’ve noticed, with both the 3rd party app and my own coding, that for about a second (sometimes more) the reported voltages are very high or low before settling to “normal” oscillation around the isoelectric line. This is especially true when the sensor electrode strap has only just been placed on the chest. To help overcome this, I use the Heart Rate service UUID “180D” and set notify on characteristic "2A37" to get the heart rate and RR interval data, of which the first byte contains flags including a sensor contact flag (2 bits - both set when sensor contact is OK, upon which I setNotifyValue on the ECG data characteristic to start frame delivery). Having discovered your Polar H10, connected to it and discovered its services you need to discover the PMD Control Characteristic within the PMD Service then use it to request Streaming and to request the ECG stream (there are other streams). Once the requests have been accepted (didWriteValueFor Characteristic) then you start the Stream. Thereafter, frames are delivered by the delegate callback func peripheral(_ peripheral: CBPeripheral, didUpdateValueFor characteristic: CBCharacteristic, error: Error?) for the characteristic.uuid == pmdDataUUID The following code snippets, the key aspects of the solution, assume a working knowledge of CoreBluetooth. Also, decoding of data (code not provided) requires a knowledge of byte and bit-wise operations in Swift (or Objective-C). // CBUUIDs and command data let pmdServiceUUID = CBUUID.init( string:"FB005C80-02E7-F387-1CAD-8ACD2D8DF0C8" ) let pmdControlUUID = CBUUID.init( string:"FB005C81-02E7-F387-1CAD-8ACD2D8DF0C8" ) let pmdDataUUID = CBUUID.init( string:"FB005C82-02E7-F387-1CAD-8ACD2D8DF0C8" ) let reqStream = Data([0x01,0x02]) let reqECG = Data([0x01,0x00]) let startStream = Data([0x02, 0x00, 0x00, 0x01, 0x82, 0x00, 0x01, 0x01, 0x0E, 0x00]) // Request streaming of ECG data func peripheral(_ peripheral: CBPeripheral, didDiscoverCharacteristicsFor service: CBService, error: Error?) if service.uuid == pmdServiceUUID { for pmdChar in service.characteristics! { if pmdChar.uuid == pmdControlUUID { peripheral.setNotifyValue(true, for: pmdChar) peripheral.writeValue(reqStream, for: pmdChar, type: .withResponse) peripheral.writeValue(reqECG, for: pmdChar, type: .withResponse) } } } } // Request delivery of ECG frames - actual delivery subject to setNotify value func peripheral(_ peripheral: CBPeripheral, didWriteValueFor characteristic: CBCharacteristic, error: Error?) { // this responds to the reqStream and reqECG write values if error != nil { print("**** write error") return } if ecgStreamStarted { return } // I use a flag to prevent extraneous stream start commands guard let charVal = characteristic.value else { return } if charVal[0] == 0xF0 && charVal[1] == 0x01 { peripheral.writeValue(startStream, for: characteristic, type: .withResponse) ecgStreamStarted = true } } For “live” charting, I create an array of data points, appending each frame’s set on arrival, then provide those points to a SwiftUI View with a TimeLineView(.periodic(from: .now, by:actual sampling interval)) and using Path .addlines with the Y value scaled appropriately using GeometryReader. So far, I’ve found no way of cancelling such a TimeLineView period, so any suggestions are welcome on that one. An alternative approach is to refresh a SwiftUI Chart View on receipt and decoding of each frame, but this creates a stuttered appearance due to the approximately half-second interval between frames. Regards, Michaela

Hi, is there an intrinsic instruction to shift a vector from another a shift vector? thank

I want to implement a stack that works quite like a circular buffer. void** pp = malloc(sizeof(id) * 100); pp[index] = someObject; // later on somewhere: MyObject* myObj = (MyObject*)pp[index]; Is this correct? Does this approach work with ARC?

Hi all, I have a problem with trying to use UIApplication.shared.canOpenURL to open a specific web extension in the safari settings. When executing the code below the safari extension menu is shown but not the settings for the specific extension: if let url = URL(string: "App-prefs:SAFARI&path=WEB_EXTENSIONS/NAME_OF_EXTENSION") { if UIApplication.shared.canOpenURL(url) { UIApplication.shared.open(url, options: [:], completionHandler: nil) } } However, the weird thing is that when executing the above I can see some kind of an event that looks like it tries to click the specific extension. Furthermore, if I keep the settings open and tries to execute the code again it actually works, and the specific web extension's settings is open. Hope someone can help.

I recently created a project, originally in xCode 13.3 if i am not miistaken. Then i update it to 13.4 then update to mac os 15.6 as well. Previously the project worked fine, but then i notice if i activate breakpoints the projects stopped when i run it in xCode but it worked fine like before, without breakpoints activated. Also, when i build a .app of the project, the .app crashed exactly when the breakpoints previously stopped. I am very confused on how to continue, would like to get help from anyone regarding the issue. From what i can gather from the breakpoints and crash report, it's got something about UUIID registration? AV foundation? I am so confused. Please Help! Thanks.

I am trying to count a database table from inside some of my classes. I am tying to do this below **(My problem is that count1 is working, but count2 is not working.) ** class AppState{ private(set) var context: ModelContext? .... func setModelContext(_ context: ModelContext) { self.context = context } @MainActor func count()async{ let container1 = try ModelContainer(for: Item.self) let descriptor = FetchDescriptor<Item>() let count1 = try container1.mainContext.fetchCount(descriptor) let count2 = try context.fetchCount(descriptor) print("WORKING COUNT: \(count1)") print("NOTWORKING COUNT: \(count2) -> always 0") } I am passing the context like: ... @main @MainActor struct myApp: App { @State private var appState = AppState() @Environment(\.modelContext) private var modelContext WindowGroup { ItemView(appState: appState) .task { appState.setModelContext(modelContext) } } .windowStyle(.plain) .windowResizability(.contentSize) .modelContainer(for: [Item.self, Category.self]) { result in ... } Can I get some guidance on why this is happening? Which one is better to use? If I should use count2, how can I fix it? Is this the correct way to search inside an application using SwiftData ? I don't wanna search using the View like @Query because this operation is gonna happen on the background of the app.

Hi everyone, I'm encountering an issue while testing a subscription purchase with a promotional offer using StoreKit in the Xcode debug environment. I’ve created a subscription in the StoreKit configuration file and added a promotional offer. However, when I attempt to make a purchase with the promotional offer, the process fails, and I receive an alert with the message: "Unable to purchase" "Contact the developer for more information." Here’s the error that is printed in the Xcode logs: Purchase did not return a transaction: Error Domain=ASDErrorDomain Code=3903 "Received failure in response from Xcode" UserInfo={NSDebugDescription=Received failure in response from Xcode, NSUnderlyingError=0x303346b50 {Error Domain=AMSErrorDomain Code=305 "Server Error" UserInfo={NSLocalizedDescription=Server Error, AMSServerErrorCode=3903, AMSServerPayload={ "cancel-purchase-batch" = 1; dialog = { defaultButton = ok; explanation = "Contact the developer for more information.\n\n[Environment: Xcode]"; initialCheckboxValue = 1; "m-allowed" = 0; message = "Unable to Purchase"; okButtonString = OK; }; dsid = 17322632127; failureType = 3903; jingleAction = inAppBuy; jingleDocType = inAppSuccess; pings = ( ); }, AMSURL=http://localhost:49300/WebObjects/MZBuy.woa/wa/inAppBuy, AMSStatusCode=200, NSLocalizedFailureReason=The server encountered an error}}} Has anyone encountered a similar issue, or does anyone have insights into what might be causing this? I’m using StoreKit 2 methods for handling subscriptions, and this error only occurs when attempting to apply the promotional offer. Any help or suggestions would be greatly appreciated! Thanks in advance!

Good Morning/Afternoon/Evening. I'm trying to build a code with a background bar (grey) and above it, we have a ProgressiveBar that starts full and empties as time passes. To be able to stack the elements one above the other I'm trying to use the Zstack function, as shown on the code below, but when simulating the code the progressiveBar is always, on the iPhone screen, showing on top of the background bar, and not above as desired. Could you please review the code below and let me know what I'm missing? `var body: some View { ZStack(alignment: .leading) { // Background bar RoundedRectangle(cornerRadius: 10) .fill(Color.gray.opacity(0.3)) .frame(height: barHeight) // Set height to the specified barHeight // Progress bar GeometryReader { geometry in RoundedRectangle(cornerRadius: 10) .fill(barColor) .frame(width: CGFloat(progress) * geometry.size.width, height: barHeight) .animation(.linear(duration: 1), value: progress) } .cornerRadius(10) // Icon and label HStack { Image(systemName: icon) .foregroundColor(.black) .font(.system(size: 28)) // Increased size .padding(.leading, 8) Spacer() Text(timeString(from: duration * Double(progress))) .foregroundColor(.black) .bold() .font(.system(size: 24)) // Increased size .padding(.trailing, 8) } .frame(width: UIScreen.main.bounds.width * 0.9, height: barHeight) .zIndex(1) // Ensure the HStack is on top } .padding(.horizontal)

Hi, I have a file with a name like this: file name.filetype I need to include it in an xcconfig file. I have read that spaces are used as delimiters in xcconfig files, and I need to correctly quote it. But this is for the framework paths, so not sure if the same applies to config files. This might be a really silly question, but what's the correct quotation format we need to follow? I've tried all the usual stuff: #include "../../../file\ name.filetype" #include "../../../file%20name.filetype" #include "../../../file name.filetype" #include "../../../file"+" "+"name.filetype" But neither is working. Am I having a major brain meltdown moment or is there a specific way to do it? Thanks a lot.

I am trying to embed a python file that uses a python library in c, to do this I need to include python.h but I don't see it anywhere on my mac. Right now when I try to compile I just get a missing Python.h compile error. I tried using the search bar to find it in /usr and /library. Neither had the file. I tried doing #include <Python/python.h> and that doesn't change anything. Is trying to setup a virtual env the issue?

I'm looking to do conditional programming with NEON. I try the __ARN_NEON tag. it doesn't work can you help me?

I've been relishing Develop in Swift: Fundamentals as an introduction to Swift. It's wonderful! Having limited time, and ultimately targeting visionOS development, I've reached a point where any UIKit content feels like a distraction from my goals. Hence I'm switching to SwiftUI Bootcamp by Swiftful Thinking on YouTube, SwiftUI Concepts Tutorials, and SwiftUI Tutorials by Apple. Is there any official word on updates to the Develop in Swift series? Failing that, any other recommendations on how to bridge between Fundamentals and visionOS development?

Hi, I had a SwiftData model and it was working fine, I had few records in it, but when I added to its Module file few extra properties I started to get the below error ! how to fix this ? "Thread 1: Fatal error: failed to find a currently active container for Patient"

When building my iOS framework, I encountered a (fatal) module 'TrustKit' not found issue. I've marked the necessary classes as public (which is inherited from other library classes) for client applications, but I'm unsure how to resolve this error. Example Code Snippet import Foundation import TrustKit @objc public class InheritanceTruskitFrameworkProjectClass: TrustKit { func extraFunctionality() { print("extraFunctionality executing...") } } Error while building the framework in the auto-generated Swift header file (ProjectName-Swift.h) #if !defined(SWIFT_IMPORT_STDLIB_SYMBOL) # define SWIFT_IMPORT_STDLIB_SYMBOL #endif #endif #if defined(__OBJC__) #if __has_feature(objc_modules) #if __has_warning("-Watimport-in-framework-header") #pragma clang diagnostic ignored "-Watimport-in-framework-header" #endif @import Foundation; @import TrustKit; # -> error here `(fatal) module 'TrustKit' not found` #endif #endif #pragma clang diagnostic ignored "-Wproperty-attribute-mismatch" #pragma clang diagnostic ignored "-Wduplicate-method-arg" #if __has_warning("-Wpragma-clang-attribute") # pragma clang diagnostic ignored "-Wpragma-clang-attribute" #endif #pragma clang diagnostic ignored "-Wunknown-pragmas" #pragma clang diagnostic ignored "-Wnullability" #pragma clang diagnostic ignored "-Wdollar-in-identifier-extension" Please check this image to understand the error Sample GitHub project https://github.com/vinaykumar0339/InheritanceTruskitFrameworkProject I want a way to use inheritance for the dependencies project. Is this supported? Looks Like it won't work with any modules like cocopod frameworks, internal module map etc? What I have Tried I have tried to install TrustKit with SPM also the same error throwing (fatal) module 'TrustKit' not found

Dear all, I'm going out of mind with the following issue. I have a view where I'm selecting a date through a datepicker. Then I'm inserting some other data and then I'm trying to save, see private func saveTraining(). But the date which is used to save the training is always one day before the selected date and more than this, I'm not able to save it without time. As I have then a calendar where the saved trainings need to be displayed, I'm not able to match it. Did anybody already face this issue? How can I solve it? I'm reporting here the code of the view where you can also find the checks I put to verify values/ dates: import SwiftData import AppKit struct AddTrainingView: View { @Environment(\.modelContext) private var context @Binding var isAddingTraining: Bool @ObservedObject var season: Season @Binding var selectedDate: Date @State private var trainingStartTime = Date() @State private var trainingEndTime = Date() @State private var trainingConditionalGoal = "" @State private var trainingTacticalGoal = "" @State private var trainingExercises: [TrainingExercise] = [] @State private var showExercisePicker = false @State private var currentTraining: Training? init(isAddingTraining: Binding<Bool>, selectedDate: Binding<Date>, season: Season, currentTraining: Training? = nil) { self._isAddingTraining = isAddingTraining self._selectedDate = selectedDate self.season = season self._currentTraining = State(initialValue: currentTraining) if let training = currentTraining { self._trainingStartTime = State(initialValue: training.startTime) self._trainingEndTime = State(initialValue: training.endTime) self._trainingConditionalGoal = State(initialValue: training.conditionalGoal) self._trainingTacticalGoal = State(initialValue: training.tacticalGoal) self._trainingExercises = State(initialValue: training.trainingExercises) } } var body: some View { VStack(alignment: .leading, spacing: 16) { Text("Aggiungi Allenamento") .font(.title) .bold() .padding(.top) VStack(alignment: .leading) { Text("Data allenamento:") DatePicker("", selection: $selectedDate, displayedComponents: .date) .datePickerStyle(.field) } .padding(.bottom, 10) ... Button("Salva") { saveTraining() isAddingTraining = false dismiss() } .buttonStyle(.borderedProminent) .tint(.blue) Button("Visualizza PDF") { createPDF() } .buttonStyle(.borderedProminent) .tint(.blue) Spacer() } .padding(.bottom) } .padding() .frame(maxWidth: .infinity, maxHeight: .infinity) } private func saveTraining() { // Creiamo un'istanza del calendario corrente var calendar = Calendar.current calendar.timeZone = TimeZone.current // Assicuriamoci di utilizzare il fuso orario locale // Estrarre solo i componenti di data dalla data selezionata let components = calendar.dateComponents([.year, .month, .day], from: selectedDate) // Creiamo una nuova data con i soli componenti di anno, mese e giorno guard let truncatedDate = calendar.date(from: components) else { print("Errore nella creazione della data troncata") return } // Stampa di debug per verificare la data selezionata e quella troncata print("Data selezionata per l'allenamento: \(selectedDate)") print("Data troncata che verrà salvata: \(truncatedDate)") let newTraining = Training( date: truncatedDate, startTime: trainingStartTime, endTime: trainingEndTime, conditionalGoal: trainingConditionalGoal, tacticalGoal: trainingTacticalGoal, season: season ) // Verifica che la data sia correttamente impostata print("Data che verrà salvata: \(newTraining.date)") newTraining.trainingExercises = trainingExercises context.insert(newTraining) do { try context.save() print("Allenamento salvato correttamente.") } catch { print("Errore nel salvataggio: \(error.localizedDescription)") } } private var dateFormatter: DateFormatter { let formatter = DateFormatter() formatter.dateStyle = .short return formatter } private var timeFormatter: DateFormatter { let formatter = DateFormatter() formatter.timeStyle = .short return formatter } } } Example: when I'm selecting 2023-08-21, the debugger retrieves me following data: Data selezionata per l'allenamento: 2023-08-20 22:00:00 +0000 Data troncata che verrà salvata: 2023-08-20 22:00:00 +0000 Data che verrà salvata: 2023-08-20 22:00:00 +0000 Allenamento salvato correttamente.

Hi everyone, I'm currently working with the Screen Time API, specifically trying to figure out the best way to pause an active, repeating schedule without disrupting future schedules. Here's the scenario: I have a repeating schedule set from 10:00 AM to 8:00 PM daily. If I need to pause the schedule temporarily, my current approach involves stopping monitoring, clearing all restrictions, and then setting a new schedule for the remaining time after the pause. However, this method cancels the repeating schedule entirely, which causes issues when the schedule is supposed to restart the next day at 10:00 AM. Instead, it starts after the pause time, which isn’t what I want. Challenges I'm Facing: Maintaining Repeating Schedules: How can I pause the schedule in a way that ensures it resumes correctly the next day at the intended time (10:00 AM)? DeviceActivityMonitor Logic: Is there a way to deactivate and reactivate the schedule through the DeviceActivityMonitor without fully stopping the monitoring? Ideally, I'd like to retain the original schedule, pause it, and then resume it seamlessly after the pause. What I’ve Tried So Far: I’ve attempted to store the necessary data in the App Groups shared container as a local file. In the DeviceActivityMonitor, I used the schedule's name to identify and retrieve the saved object, planning to use this data to reapply the shielding after the pause. Unfortunately, this approach exceeds the 6MB memory limit of the extension, which is another roadblock. Given these issues, I’m unsure how to move forward. Are there any best practices or alternative approaches that could help manage this situation more effectively? Any insights or suggestions would be greatly appreciated! Thanks in advance for your help.

I have a very simple set of lines of code. It doesn't matter whether you run it under UIKit or SwiftUI. In SwiftUI, I have the following. import SwiftUI struct ContentView: View { var body: some View { VStack { Button("Click on me") { let tabLine = "1\tAnthony James\t139.9" var item = "" let tabs = tabLine.components(separatedBy: "\t") for tab in tabs { item += "'\(tab)'" } print("\(item)") } } } } So I have tab-separated values. And I want to separate them and quote each value either with an apostrophe or a double quotation mark. In the case above, I get the following print. '1''Anthony James''139.9' That's exactly what I want. Now, I have an array of three of those guys like the following. import SwiftUI struct ContentView: View { var body: some View { VStack { Button("Click on me") { let tabLine0 = "1\tAnthony James\t139.9" let tabLine1 = "2\tKim Harbaugh\t181.4" let tabLine2 = "3\tAnthony James\t212.4" let tabTextLines = [tabLine0, tabLine1, tabLine2] var strings = [String]() for tabLine in tabTextLines { var item = "" let tabs = tabLine.components(separatedBy: "\t") for tab in tabs { item += "'\(tab)'" } strings.append(item) } print("\(strings)") } } .frame(width: 360, height: 240) } } And I get the following print. This is a nightmare situation. Each value is quoted with an escaped apostrophe. I can't even remove the escapees with replacingOccurrences(of:with:). How does that happen when you have an array of strings? If I try quoting the values with a unicode character, things are the same. Is there a workaround? Muchos thankos.

I noticed a change from previous betas when I attempted to compile my code with Xcode 16 beta 5. If I have a class that is MainActor isolated, and it overrides init(), it looks like this init is always considered nonisolated now, even for a MainActor isolated class. This was not the case before. For example, I have a class that inherits from NSScroller. It defines a default initializer init() which calls the designated initializer - super.init(frame:CGRect()). This is apparently not allowed right now. If that's the case, how can one even default-initialize a class??? It also doesn't let me initialize other properties, since everything is MainActor isolated. Here's an abbreviated example. class MyCustomScroller : NSScroller { init () { super.init(frame: CGRect()) scrollerStyle = .overlay alphaValue = 0 } } This was allowed in prior betas. However, in beta 5, all 3 lines of my init generates an error such as: Call to main actor-isolated initializer 'init(frame:)' in a synchronous nonisolated context or Main actor-isolated property 'scrollerStyle' can not be mutated from a nonisolated context Is it just no longer possible to default-initialize MainActor classes, such as NSViews, now? The first line is particularly problematic because if I change it to just call super.init() then I get this error instead: Must call a designated initializer of the superclass 'NSScroller' You must call the designated initializer ... oh wait, we won't let you. Too bad.

With the release of iOS 18 Developer Beta 5 and Public Beta 3, my team received reports from customers that all negative values in our app were showing as positives, which led to major confusion. We narrowed down the issue to a change to the initializer for Decimal: Decimal(sign:exponent:significand). Prior to Beta 5, the sign passed into the initializer would be the sign of the decimal. Passing plus would result in a positive decimal, and passing minus would result in a negative decimal. This is regardless of the sign of the significant. In Beta 5, it seems that the sign passed into the init, and the sign of the significand are now multiplied together. This means that passing .minus for sign and a negative Decimal for significand results in an unexpectedly positive Decimal value in Beta 5 alone. This behavior does not seem to be explicitly documented. I created a quick playground to illustrate the issue. Here's the code: // Expected Value: 20 // Actual Value: 20 let positiveDecimal = Decimal(sign: .plus, exponent: 1, significand: 2) // Expected Value: 20 // Actual Value (15.4.0, 16.0 Beta 4): 20 // Actual Value (16.0 Beta 5): -20 let positiveDecimalWithNegativeSignificand = Decimal(sign: .plus, exponent: 1, significand: -2) // Expected Value: -20 // Actual Value: -20 let negativeDecimal = Decimal(sign: .minus, exponent: 1, significand: 2) // Expected Value: -20 // Actual Value (15.4.0, 16.0 Beta 4): -20 // Actual Value (16.0 Beta 5): 20 let negativeDecimalWithNegativeSignificand = Decimal(sign: .minus, exponent: 1, significand: -2) Here is the result of running the playground in Xcode 16.0 Beta 4 (and 15.4.0): And here is the result of running it in Xcode 16.0 Beta 5: I've tracked down the issue to a PR in the swift-foundation repo from 3 weeks ago, which seems to pull a commit from the swift-corelibs-foundation repo. For anyone else who finds this thread looking for a solution, in the mean time you can wrap the significant in abs and this should ensure consistent behavior between iOS 18 Beta 5 and prior iOS versions.