I am a beginner to swift and ios development and need some help with structured concurrency. I need a long running function to execute on a background thread, and be cancelled if it is called again before completing. Unfortunately, my…
I am working on a "HealthController" who's responsibility is to expose helpers for HealthKit and in the future track various health kit data points like heartrate, calories etc... My setup so far looks like this (This is in a new…
My code looks like this and there's a concurrency warning when accessing the loadTransferable for the selectedPhoto from PhotosPicker struct SampleCode: View { @State var showOptionSheet = false @State var showPhotoPicker = false @State var selectedPhoto: PhotosPickerItem? @State var showProgressView…
I have a main actor isolated class like this one: @MainActor open class TimerScheduler { private enum TimerState { case normal case paused(remaining: TimeInterval) } private struct TimerInfo { let timer: Timer let state: TimerState } private var keyToTimerInfoMap =…
I have a function that returns the memory use of a device. It uses mach_task_self_ which gives a warning that it is not concurrency-safe. task_info(mach_task_self_, task_flavor_t(TASK_VM_INFO), intPtr, &count) According to this answer you can import and mark as @preconcurrency however…
I have a LogManager singleton class that saves strings into an array for logging purposes. I want the first entry into the log to be some system information so it gets added during init @objc public final class LogManager: NSObject,…
I have the following view model: @MainActor final class SomeViewModel { func loadFromService() async { do { let dto = try await networkService.theServiceIneedHere() //process dto //state is a @Published property and observed by a SwiftUI view to update the UI.…
UIViewPropertyAnimator has an addCompletion method that lets you provide a block of code to be executed when the animation ends: func addCompletion(_ completion: @escaping (UIViewAnimatingPosition) -> Void) When I try to use an animator in a Task and I call…
Let’s say I have the following function which performs a long-running, expensive, synchronous operation: func doSomethingExpensive() -> Foo { let result = // ... some long-running, expensive, synchronous operation ... let manipulatedResult = manipulateResult(result) // another long-running, expensive, synchronous operation…
Having memory leak issue while asynchronously iterating over AsyncPublisher (kind of async sequence)! In the following code I have timerSequence (AsyncPublisher<Publishers.Autoconnect<Timer.TimerPublisher>>) and on inti I'm asynchronously iterating over that timer sequence. But event after [weak self] capture inside Task it's…