port TemplateBinding to ed3266266e751b5ab1f75f8e0509d0d5f0ef35d8

pkg/template_binding/lib/src/list_diff.dart

 // Copyright (c) 2013, 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.
 
 library template_binding.src.list_diff;
 
 import 'dart:math' as math;
 import 'package:observe/observe.dart' show ListChangeRecord;
 
 /**
@@ skipping 21 matching lines @@
   // TODO(jmesserly): freeze remove list before handing it out?
   /** The items removed, if any. Otherwise this will be an empty list. */
   List get removed => _removed;
 
   /** The number of items added. */
   int get addedCount => _addedCount;
 
   int get removedCount => _removed.length;
 
   /** Returns true if the provided index was changed by this operation. */
-  bool changes(key) {
+  bool indexChanged(key) {
     // If key isn't an int, or before the index, then it wasn't changed.
     if (key is! int || key < index) return false;
 
     // If this was a shift operation, anything after index is changed.
     if (addedCount != removedCount) return true;
 
     // Otherwise, anything in the update range was changed.
     return key < index + addedCount;
   }
 
@@ skipping 206 matching lines @@
         oldIndex++;
         break;
     }
   }
 
   if (splice != null) {
     splices.add(splice);
   }
   return splices;
 }