Doubts in NSNotification in Swift

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I am developing my very first app for iOS and not understanding notifications.

I am sending notifications as:

DefaultCenter.postNotificationName("evRodadaAtualizei", object: nil)

In another class, I have a method that observes this notification:

DefaultCenter.addObserver(self, selector: Selector("Atualizar"), 
    name: "evRodadaAtualizei", object: nil)

My question is:

This observer will listen any notification with that name? It is not important the class where notification was declared? In other words, is possible to have a place to put all the notifications (like a notification library), because all of them are independent of the class?

If I am understanding correctly, this is very different of the concept of events in C# or VB.Net where events belongs to classes.

asked 28 secs ago

Nizam

448