Expose Zones.

sdk/lib/async/future.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.
 
 part of dart.async;
 
 /**
  * An object representing a delayed computation.
  *
  * A [Future] is used to obtain a not yet
@@ skipping 176 matching lines @@
    * Returns a future which will complete once all the futures in a list are
    * complete. If any of the futures in the list completes with an error,
    * the resulting future also completes with an error. Otherwise the value
    * of the returned future will be a list of all the values that were produced.
    */
   static Future<List> wait(Iterable<Future> futures) {
     Completer completer;
     // List collecting values from the futures.
     // Set to null if an error occurs.
     List values;
-    void handleError(error) {
+
+    handleError(error) {

[Lasse Reichstein Nielsen, 2013/09/23 14:24:12]

Without the "void" this looks too much like a function call.
How about having "dynamic" as return type (because neither void nor Null seems
to typecheck. At least Null probably should).

[floitsch, 2013/09/23 17:12:07]

It sticks nicely out in the editor. So syntax highlighting makes a huge
difference.
"void" would actually work again (I had the FutureImpl temporarily changed but
needed to revert the change because too many users were depending on it).
Added "dynamic", but if you prefer I could go back to "void".

       if (values != null) {
         values = null;
         completer.completeError(error);
       }
+      return null;
     }
+
     // As each future completes, put its value into the corresponding
     // position in the list of values.
     int remaining = 0;
     for (Future future in futures) {
       int pos = remaining++;
       future.catchError(handleError).then((Object value) {
         if (values == null) return null;
         values[pos] = value;
         remaining--;
         if (remaining == 0) {
@@ skipping 252 matching lines @@
    *
    * The argument [exception] must not be `null`.
    */
   void completeError(Object exception, [Object stackTrace]);
 
   /**
    * Whether the future has been completed.
    */
   bool get isCompleted;
 }