Programming-Idioms

(do (Thread/sleep 30000)
    (f 42))

Task.Delay(TimeSpan.FromSeconds(30))
    .ContinueWith(_ => f(42));

Future.delayed(const Duration(seconds: 30), () => f(42));

timer := time.AfterFunc(
	30*time.Second,
	func() {
		f(42)
	})

go func() {
	time.Sleep(30 * time.Second)
	f(42)
}()

sleep(30*1000)
f(42)

let id = setTimeout(f, 30000, 42);

ScheduledExecutorService executorService = Executors.newSingleThreadScheduledExecutor();
executorService.schedule(() -> _f(42), delayInSeconds, TimeUnit.SECONDS);

Thread t = new Thread(() -> {
    try {
        sleep(30_000);
        f(42);
    } catch (InterruptedException e) {
        throw new RuntimeException(e);
    }
});
t.start();

sleep(30);
f(42);

my $thr = threads->create(sub { sleep(30); f(42); });
$thr->join()

my $thr = threads->create(sub { sleep(30); f(42); });
$thr->detach();

local $SIG{ALRM} = sub { f(42) };
alarm 30;

timer = threading.Timer(30.0, f, args=(42,) ) 
timer.start() 

Thread.new do
  sleep 30
  f(42)
end

sleep(Duration::new(30, 0));
f(42);

(f future: 30 "seconds" * 1000) value: 42.