Lasse R.H. Nielsen
0d5ce913c9
Switch default for StreamController.addStream cancelOnError parameter to false.
Add orElse named argument to Stream.{first,last}Where.
First step in renaming the argument from defaultValue to orElse.
Change-Id: I22039c1f6933664ebc287c71e802799a64776f08
Reviewed-on: https://dart-review.googlesource.com/34822
Commit-Queue: Lasse R.H. Nielsen <lrn@google.com>
Reviewed-by: Leaf Petersen <leafp@google.com>
28 lines
827 B
Dart
28 lines
827 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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// Regression test for http://dartbug.com/7964
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library first_regression_test;
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import 'dart:async';
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class DoubleTransformer<T> extends StreamTransformerBase<T, T> {
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Stream<T> bind(Stream<T> stream) {
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var transformer = new StreamTransformer<T, T>.fromHandlers(
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handleData: (T data, EventSink<T> sink) {
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sink.add(data);
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sink.add(data);
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});
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return transformer.bind(stream);
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}
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}
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main() async {
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// This should not crash. Did crash by trying to complete future more
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// than once.
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await (new Stream.fromIterable([1, 2]).transform(new DoubleTransformer()))
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.first;
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}
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