Feature suggestion: add ordered broadcast equivalent about otto HOT 7 CLOSED

We should add this to the FAQ 'cause it keeps coming up and I think we want to keep saying No. If you depend on the order of event notifications, then you probably shouldn't be using Otto. We want different components of your app to handle events without worrying about the source of those events. And they also shouldn't by worrying about other subscribers to those events. If the order of events matters, then there are interdependencies between the subscribers and Otto is hiding those interdependencies. In this case you're better off with strong coupling, like listeners or some kind of controller pattern.

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@swankjesse Does your emphatic no include the idea of providing some way for the source of the events to know whether there actually were any subscribers at all?

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@ajostergaard what's your use case? To detect bugs?

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@ajostergaard Otto will post com.squareup.otto.DeadEvent events if there were no subscribers, if that helps.

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@swankjesse - no, to make sure somebody dealt with the event so that the source can handle it as a fallback (e.g. by raising a Notification as per commonsguy).

@pforhan - if the DeadEvent comes loaded with enough of the original event then that certainly helps. :) Is there any documentation on the events Otto raises? Perhaps I've just been completely blind?!?

Actually I asked this question before finding out that LocalBroadcastManager returns false if there were no subscribers so I kind of don't need this anymore anyway - sorry for the 'noise'!

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@ajostergaard as for the DeadEvent coming loaded with enough of the original event, it just wraps the original event:

/**
  * Creates a new DeadEvent.
  *
  * @param source object broadcasting the DeadEvent (generally the {@link Bus}).
  * @param event the event that could not be delivered.
  */
  public DeadEvent(Object source, Object event) {
    this.source = source;
    this.event = event;
  }

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Thanks guys. :)

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