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kotlinlang

Hi all, I've been trying to call a method that takes a nullable Int in Kotlin common code from Swift. The method signature is:
```suspend fun getEpisodes(page: Int?): EpisodePage```
On the Swift side, have been try to write code but always am told:
```Cannot convert value of type 'Int32' to expected argument type 'KotlinInt?'```
This confuses me, and I'm sure there's a simple explanation. I can change the function signature to `getEpisodes(page: Int = 1)` instead, and that's much easier to deal with. So I'm curious what's going on here?

I've been thinking it's doing something to box up the Int? because native ints can't be null. I guess I'd love to see a nice example of how to work with this on the Swift side.

<https://kotlinlang.org/docs/reference/native/objc_interop.html#nsnumber>

Screen Shot 2021-02-02 at 5.48.57 PM.png

My Swift is not so good, admittedly, but this is not working for me.

Crashes with
```     Could not cast value of type '__NSCFNumber' (0x7fff86d65440) to 'SharedInt' (0x10df11200).```


```class EpisodeViewModel: ObservableObject {
    @Published public var episodes: [Episode] = []
    let repository = TestRepository()
    var nextPage: NSNumber? = nil
    
    func fetchEpisodes() {
        repository.getEpisodes(page: (self.nextPage as? KotlinInt)) { (data, error) in
            if let newEpisodes = data?.episodes {
                self.episodes.append(contentsOf: newEpisodes)
            }
            self.nextPage = data?.nextPage
        }
    }
    
    public var shouldDisplayNextPage: Bool {
        return nextPage != nil
    }
}```


How about just using the constructor of KotlinInt? `KotlinInt(self.nextPage!)`

The above code works now. I guess it's just my own learning how things are being mapped. Thanks for the help though, <@UQQEPAD61>

I think we both learned something :slightly_smiling_face: