| /* |
| * Copyright (c) 2011, 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. |
| */ |
| /** |
| * @assertion StreamController.broadcast({void onListen(), void onCancel(), |
| * bool sync: false}) |
| * A controller where stream can be listened to more than once. |
| * |
| * The Stream returned by stream is a broadcast stream. It can be listened to |
| * more than once. |
| * |
| * The controller distributes any events to all currently subscribed listeners |
| * at the time when add, addError or close is called. |
| * |
| * @description Checks that property stream implements Stream interface |
| * @author a.semenov@unipro.ru |
| */ |
| import "dart:async"; |
| import "../Stream/allTests_A03.lib.dart"; |
| |
| Stream<T> create<T>(Iterable<T> data, {bool isError(T element)?}) { |
| StreamController<T>? sc; |
| sc = new StreamController<T>.broadcast( |
| onListen:() { |
| for (T e in data) { |
| if (isError != null && isError(e)) { |
| sc?.addError(e as Object); |
| } else { |
| sc?.add(e); |
| } |
| } |
| new Future(() => sc?.close()); |
| }, |
| onCancel: () { |
| sc?.close(); |
| } |
| ); |
| return sc.stream; |
| } |
| |
| main() { |
| test(create); |
| } |