Big merge from experimental to bleeding edge.

samples/calculator/calculator.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.
 
 import 'dart:html';
 import 'dart:math' as Math;
 import 'calcui.dart';
 
 Set numberKeyPresses;
 Set operatorKeyPresses;
@@ skipping 238 matching lines @@
       tape.addToTape(Tape.OP_NOOP, currentRegister);
     }
   }
 }
 
 void processNumber(int code, Element key) {
   String char = new String.fromCharCodes([code]);
 
   // TODO(terry): Need to fix this in Dart library.
   // If there's already a . in our current register don't allow a second period.
-  // Math.parseDouble validates that 2.2.3.4.5 is okay and returns 2.2
   if (char == '.' && currentRegister.indexOf('.') != -1) {
     // Signal dot is valid more than once for a number.
     flickerKey(padUI.keyDot, '-error');
     return;
   } else {
     currentRegister = "${currentRegister}${char}";
   }
 
   flickerKey(key);
   tape.addToTape(Tape.OP_NOOP, currentRegister);
@@ skipping 92 matching lines @@
   renderPad(element);
 
   // Render the UI.
   document.body.children.add(element);
 
   currentRegister = "";
   total = 0.0;
 
   setupEvents();
 }