Just a silly little timer!

msTimer.d

import std.stdio, core.time;

class msTimer {
  TickDuration start;

  this()       { reset(); }
  long split() { return (TickDuration.currSystemTick() - start).msecs(); }
  void reset() { start = TickDuration.currSystemTick(); }
}

void wait(long ms) {
  auto waiter = new msTimer();
  while(waiter.split() < ms) {};
}

void main() {
  auto stopWatch = new msTimer();

  writeln("Current split: ", stopWatch.split(), "ms");

  wait(2500);
  writeln("Current split: ", stopWatch.split(), "ms");

  stopWatch.reset();
  writeln("Current split: ", stopWatch.split(), "ms");
}