blob: 74eab1ce0cb96f6402e97d78f6fbaa9b215c06de [file] [log] [blame]
// 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.
part of dart.core;
/**
* The reserved word [:null:] denotes an object that is the sole instance of
* this class.
*
* It is a compile-time error for a class to attempt to extend or implement
* Null.
*/
class Null {
factory Null._uninstantiable() {
throw new UnsupportedError('class Null cannot be instantiated');
}
int get hashCode => _HASH_CODE;
/** Returns the string `"null"`. */
String toString() => "null";
static const _HASH_CODE = 2011;
int get _identityHashCode => _HASH_CODE;
}