Make ~/, round, ceil, floor, truncate return ints. Remove toInt.

samples/solar3d/web/solar.dart

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 /**
  * A solar system visualization.
  */
 
 library solar3d;
 
@@ skipping 253 matching lines @@
 /**
  * Display the animation's FPS in a div.
  */
 void showFps(num fps) {
   if (fpsAverage == null) {
     fpsAverage = fps;
   }
 
   fpsAverage = fps * 0.05 + fpsAverage * 0.95;
 
-  query("#notes").text = "${fpsAverage.round().toInt()} fps";
+  query("#notes").text = "${fpsAverage.round()} fps";
 }
 
 /**
  * A representation of the solar system.
  *
  * This class maintains a list of planetary bodies, knows how to draw its
  * background and the planets, and requests that it be redraw at appropriate
  * intervals using the [Window.requestAnimationFrame] method.
  */
 class SolarSystem {
@@ skipping 247 matching lines @@
     print(log);
   }
 }
 
 /**
  * The entry point to the application.
  */
 void main() {
   application.startup('#container');
 }