| // Copyright (c) 2018, 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. |
| |
| import 'dart:collection'; |
| |
| class Element {} |
| |
| class InheritedElement extends Element { |
| final Map<Element, Object> _dependents = <Element, Object>{}; |
| |
| void setDependencies(Element dependent, Object value) { |
| _dependents[dependent] = value; |
| } |
| } |
| |
| main() { |
| var ie = InheritedElement(); |
| ie.setDependencies(ie, 0); |
| ie.setDependencies(Element(), null); |
| } |