Gentle start with removing explicit interfaces

corelib/src/comparable.dart

Index: corelib/src/comparable.dart
===================================================================
--- corelib/src/comparable.dart	(revision 11192)
+++ corelib/src/comparable.dart	(working copy)
@@ -4,6 +4,7 @@
 
 // Dart core library.
 
-interface Comparable {
-  int compareTo(Comparable other);
+abstract class Comparable {
+  factory Comparable._unistantiable() => null;

[regis, 2012/08/23 03:53:10]

s/_unistantiable/_uninstantiable/

[Ivan Posva, 2012/08/23 06:13:44]

Can you make these throw exceptions instead to ensure that not even library code
that has access to these constructors instantiates any objects?

[hausner, 2012/08/23 18:34:10]

Done.

[hausner, 2012/08/23 18:34:10]

Done.

+  abstract int compareTo(Comparable other);
 }