presentUnsubscribeFromStream method

void presentUnsubscribeFromStream()

more stream methods

Implementation

void presentUnsubscribeFromStream() {
  var data = intList; // some sample data
  var stream = new Stream.fromIterable(data); // create the stream

  var subscription = stream.listen(null);
  subscription.onData((value) {
    print("listen: $value");
    if (value == 2) subscription.cancel(); // cancel the subscription
  });
  subscription.onError((err) => print("error: $err"));
  subscription.onDone(() => print("done"));
}