Hi All.
While converting to Swift3, my biggest hurdle was figuring out what to do with
a custom NSNotification. In Objective-C, it’s a plain NSString, and the same in
Swift2.
I assumed in Swift3 that it worked like ErrorProtocol and errors as enums, but
as it turns out, you need to create a custom instance of
Notification.Name(“MyNotificationName”). This does not seem very Swifty, and I
think it would work better if there was a NotificationNameProtocol and you
could create enums with String raw values.
Magically, a string seems to compile in one area of the API, but not another:
// This compiles with either a string or instance of Notification.Name for name:
NotificationCenter.default().addObserver(self, selector:
#selector(Self._contextDidSave(notification:)), name: "blah", object:
managedObjectContext)
// This will only compile with an instance of Notification.Name:
NotificationCenter.default().post(name: SomeNotificationObject,
object: self)
-Kenny
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