More.

Made ObserverList work with a passed-in function, actionscript style.
I might reconsider some earlier decisions to go away from ObserverList.


git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@3952 542714f4-19e9-0310-aa3c-eee0fc999fb1

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

@@ -5,6 +5,19 @@ package com.threerings.util {
  */
 public class ArrayUtil
 {
+    /**
+     * Return the first index of the specified element, or -1 if not present.
+     */
+    public static function indexOf (arr :Array, element :Object) :int
+    {
+        for (var ii :int = 0; ii < arr.length; ii++) {
+            if (arr[ii] === element) {
+                return ii;
+            }
+        }
+        return -1;
+    }
+
     /**
      * Remove the first instance of the specified element from the array.
      */