class Example {
    var task: Task<Void, Never>?

    init() {
        task = Task { [weak self] in
            guard let self else { return }

            repeat {
                performSomeWork()
            } while !Task.isCancelled
        }
    }

    func performSomeWork() { }

    deinit {
        print("deinit")
        task?.cancel()
    }
}

task = Task { [weak self] in            //
    repeat {                            //
        guard let self else { return }  // - strong reference taken here
        performSomeWork()               //
    } while !Task.isCancelled           // - goes out of scope here
}   

task = Task { [weak self] in
    repeat {
        self?.performSomeWork()
    } while !Task.isCancelled
}

struct TimerButton: View {
    private let manager = AlarmManager.shared
    
    var body: some View {
        Button("Start a timer", systemImage: "timer") {
            Task {
                if await checkForAuthorization() {
                    await scheduleTimer()
                } else {
                    // Handle unauthorized status
                }
            }
        }
    }
    
    private func scheduleTimer() async {
        let alert = AlarmPresentation.Alert(
            title: "Ready!",
            stopButton: AlarmButton(
                text: "Done",
                textColor: .pink,
                systemImageName: "checkmark"
            )
        )
    }
    
    ...
}