dart timer delay

Future.delayed(Duration(milliseconds: 100), () {
  // Do something
});

Timer(Duration(seconds: 5), () {
  print(" This line is execute after 5 seconds");
});

Timer(Duration(seconds: 3), () {
  print("Yeah, this line is printed after 3 second");
});

// repeatedly :
Timer.periodic(Duration(seconds: 5), (timer) {
  print(DateTime.now());
});