ager@google.com
fe66a0af1a
investigate performance regression (even after fixing constructors in the intrinsifier). R=iposva@google.com,srdjan@google.com,fschneider@google.com BUG= Review URL: https://codereview.chromium.org//11000025 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@12963 260f80e4-7a28-3924-810f-c04153c831b5
24 lines
770 B
Dart
24 lines
770 B
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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// Note that optimizing compiler depends on the algorithm which returns
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// a GrowableObjectArray if length is null, otherwise returns fixed size array.
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patch class ListImplementation<E> {
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/* patch */ factory List([int length = null]) {
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if (length === null) {
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return new GrowableObjectArray<E>();
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} else {
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return new ObjectArray<E>(length);
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}
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}
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/* patch */ static _from(Iterable other) {
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GrowableObjectArray list = new GrowableObjectArray();
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for (final e in other) {
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list.add(e);
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}
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return list;
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}
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}
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