// firstDelay = delay
static java.util.Timer doEvery(int delay, final O r) {
  ret doEvery(delay, delay, r);
}

static java.util.Timer doEvery(int delay, int firstDelay, final O r) {
  final java.util.Timer timer = new java.util.Timer();
  timer.scheduleAtFixedRate(smartTimerTask(r, timer, delay), firstDelay, delay);
  ret timer;
}