Added Comparators.COMPARABLE.

git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@4937 542714f4-19e9-0310-aa3c-eee0fc999fb1

src/as/com/threerings/util/ArrayUtil.as

@@ -36,17 +36,7 @@ public class ArrayUtil
      */
     public static function sort (arr :Array) :void
     {
-        arr.sort(function (obj1 :Object, obj2 :Object) :int {
-            if (obj1 == obj2) { // same object or both null
-                return 0;
-            } else if (obj1 == null) {
-                return -1;
-            } else if (obj2 == null) {
-                return 1;
-            } else {
-                return Comparable(obj1).compareTo(obj2);
-            }
-        });
+        arr.sort(Comparators.COMPARABLE);
     }
 
     /**

src/as/com/threerings/util/Comparators.as

@@ -0,0 +1,27 @@
+//
+// $Id$
+
+package com.threerings.util {
+
+/**
+ * Contains sorting Comparators.
+ */
+public class Comparators
+{
+    /**
+     * A standard Comparator for comparing Comparable values.
+     */
+    public static function COMPARABLE (c1 :Comparable, c2 :Comparable) :int
+    {
+        if (c1 == c2) { // same object -or- both null
+            return 0;
+        } else if (c1 == null) {
+            return -1;
+        } else if (c2 == null) {
+            return 1;
+        } else {
+            return c1.compareTo(c2);
+        }
+    }
+}
+}