Can a Swift Optional Int (Int?) be exposed to Objective-C via bridging?

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The problem with exposing an Int? property as NSNumber* is that you could store a non-Int-compatible NSNumber to it from Objective-C.

You can make a computed NSNumber? property to wrap your Int? property. The getter would simply return the Int? variable. The setter would set the Int variable from -[NSNumber integerValue].

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