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| part of dartboard; | |
| class FutureGroup<E> { | |
| Completer<E> _completer = new Completer<E>(); | |
| Set<Future<E>> _futures = new Set<Future<E>>(); | |
| bool add(Future<E> future) => _futures.add(future); | |
| Future<List<E>> wait() { | |
| Future.wait(_futures).then((result) => _completer.complete(result)) | |
| ..catchError((err) => _completer.completeError(err)); | |
| return _completer.future; | |
| } | |
| } |
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