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kotlinlang

Hi, I hava another issue now with generics and obj-c.
In kotlin I have a simple class with Int types:
```data class MyTestDataClass(val ppp: Int, val ttt: List&lt;Int&gt;)```
But in obj-c it looks like:
CommonMyTestDataClass : KotlinBase
- (*instancetype*)initWithPpp:(int32_t)ppp ttt:(NSArray&lt;CommonInt *&gt; *)ttt

So different types: int32_t and CommonInt
WTF?

Hello! What’s wrong with it? You should be available to work with both these types from the Objective-C side, AFAIK.

Actually, I don’t know:) My iOS team said that these types are different and may be it’s a bug Kotlin&lt;-&gt;ObjC mapping..

Ok, thanks. Can I read somewhere about this behavior? I would like more about this..

As you can see in this table(<https://kotlinlang.org/docs/reference/native/objc_interop.html#mappings>), Kotlin primitive types are mapped into either primitive types or `NSNumber`. Also, there is a note on boxes mapping, explaining your case. As a `List` in your example should be exported `NSArray` , it has to use `NSNumber` subclass. In Objective-C, one cannot make NSArray of primitive types.