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svn mv lib/sdk svn mv lib/sdk/compiler sdk/lib/_internal svn mv pkg/dartdoc sdk/lib/_internal (cannot gcl upload due to .png's in dartdoc) TBR=iposva git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@14473 260f80e4-7a28-3924-810f-c04153c831b5
44 lines
1.2 KiB
Dart
44 lines
1.2 KiB
Dart
// Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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/**
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* An [Expando] allows adding new properties to objects.
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*/
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class Expando<T> {
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/**
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* The name of the this [Expando] as passed to the constructor. If
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* no name was passed to the constructor, the name is [null].
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*/
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final String name;
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/**
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* Creates a new [Expando]. The optional name is only used for
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* debugging purposes and creating two different [Expando]s with the
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* same name yields two [Expando]s that work on different properties
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* of the objects they are used on.
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*/
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external Expando([String name]);
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/**
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* Expando toString method override.
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*/
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String toString() => "Expando:$name";
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/**
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* Gets the value of this [Expando]'s property on the given
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* object. If the object hasn't been expanded, the method returns
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* [null].
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*/
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external T operator [](Object object);
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/**
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* Sets the value of this [Expando]'s property on the given
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* object. Properties can effectively be removed again by setting
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* their value to null.
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*/
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external void operator []=(Object object, T value);
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}
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