lib/core/hashable.dart - Issue 10917100: Eliminate unnecessary factory constructors in abstract core classes

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Issue 10917100: Eliminate unnecessary factory constructors in abstract core classes (Closed) Base URL: http://dart.googlecode.com/svn/branches/bleeding_edge/dart/

Patch Set: Created 8 years, 3 months ago

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1 // Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file	1 // Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file

2 // for details. All rights reserved. Use of this source code is governed by a	2 // for details. All rights reserved. Use of this source code is governed by a

3 // BSD-style license that can be found in the LICENSE file.	3 // BSD-style license that can be found in the LICENSE file.

4	4

5 // Dart core library.	5 // Dart core library.

6	6

7 abstract class Hashable {	7 abstract class Hashable {

8 factory Hashable._uninstantiable() {

9 throw const UnsupportedOperationException(

10 "abstract class Hashable cannot be instantiated");

11 }

12 abstract int hashCode();	8 abstract int hashCode();

13 }	9 }

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