import 'dart:async';

void main() {

  var data = [1,2,3,4,5];
  var stream = new Stream.fromIterable(data);
  var broadcastStream = stream.asBroadcastStream();

  broadcastStream.listen((value) => print("(3)stream.listen: $value"));
  broadcastStream.first.then((value) => print("(3)stream.first: $value")); // 1
  broadcastStream.last.then((value) => print("(3)stream.last: $value")); // 5
  broadcastStream.isEmpty.then((value) => print("(3)stream.isEmpty: $value")); // false
  broadcastStream.length.then((value) => print("(3)stream.length: $value")); // 5

}