- Add definition of "int hashCode()" to Object.

lib/compiler/implementation/lib/core_patch.dart

Index: lib/compiler/implementation/lib/core_patch.dart
===================================================================
--- lib/compiler/implementation/lib/core_patch.dart	(revision 12648)
+++ lib/compiler/implementation/lib/core_patch.dart	(working copy)
@@ -16,6 +16,11 @@
 
 // Patch for Object implementation.
 patch class Object {
+  patch int hashCode() {
+    throw new RuntimeError("Unimplemented: Object.hashCode");
+    return -1;

[ahe, 2012/09/21 09:15:57]

This is unreachable code. This will lead to a warning that is confused about the
location due to poor testing of the patch mechanism in dart2js:

lib/core/object.dart:25:55: Warning: unreachable code
 * Check whether two references are to the same object.
                                                      ^^

Johnni is working on fixing the patch diagnostic issues.

[Ivan Posva, 2012/09/24 17:16:47]

Thanks for the feedback. Next time I will not attempt to alert dart2js'
implementation as missing and instead just make it always return some constant.

[ahe, 2012/09/24 17:19:11]

Or you can just use "throw", there no need to have a "return" after "throw".

+  }
+
   patch String toString() {
     return Primitives.objectToString(this);
   }