jacobsapps

let thread = Thread {
    print(Thread.callStackSymbols)
}
thread.start()

jacobsapps

let thread = Thread {
    print(Thread.callStackSymbols)
}
thread.start()

jacobsapps

let task = Task {
    print("Start task") // prints 
    try? await Task.sleep(for: .seconds(1))
    print("Haven't checked cancellation yet") // prints
    try Task.checkCancellation() // or, if Task.isCancelled { return } 
    print("End task") // does not print 
}
task.cancel()

jacobsapps

let thread = Thread {
    print("NSThread starting...")
    Thread.exit() // exit thread internally
    print("Will never be printed")
}
    
thread.start()
thread.cancel() // cancel thread externally

jacobsapps

enum User {
    @TaskLocal static var name = "n/a"
}
    
Task {
    print(User.name) // n/a
    User.$name.withValue("Alice") {
        print(User.name) // Alice
        Task {
            print(User.name) // Alice

jacobsapps

Thread {
    Thread.current.threadDictionary["name"] = "Alice"
    print(Thread.current.threadDictionary["name"]!) // Alice
    Thread.current.threadDictionary["name"] = "Bob"
    print(Thread.current.threadDictionary["name"]!) // Bob
}.start()

jacobsapps

Task { @MainActor in
    print("Task scheduled on main actor")
}

jacobsapps

Task.detached {
    print("Running on global actor")
    await MainActor.run {
        print("Switched to main actor")
    }
}

jacobsapps

Thread {
    // <NSThread: 0x6000017cfd00>{number = 8, name = (null)}
    print("Running on background thread: \(Thread.current)")
    DispatchQueue.main.async {
        // <_NSMainThread: 0x600001708040>{number = 1, name = main}
        print("Switched to main thread: \(Thread.current)")
    }
}.start()

jacobsapps

Task(priority: .high) {
    print(Task.currentPriority) // TaskPriority.high
}