blob: 6a9e3eeceb031fe56c088599287cbc55b25d3466 [file] [log] [blame]
// Copyright (c) 2016, 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 Stream.fromFutures(Iterable<Future<T>> futures)
/// Create a stream from a group of futures.
/// The stream reports the results of the futures on the stream in the order
/// in which the futures complete.
/// If some futures have completed before calling Stream.fromFutures,
/// their result will be output on the created stream in some unspecified order.
/// When all futures have completed, the stream is closed.
/// If no future is passed, the stream closes as soon as possible.
/// @description Checks Stream interface methods (error processing)
/// @author
import "dart:async";
import "allTests_A02.lib.dart";
Stream<T> create<T>(Iterable<T> data, {bool isError(T x)?, T? defVal}) {
return new Stream.fromFutures( x) {
return new Future.value(x).catchError((_) {}).then((_) {
if (isError != null && isError(x)) {
throw x!;
return x;
main() {