what objects can you transfer back and fourth betw...

# kotlin-native

[spierce7]

what objects can you transfer back and fourth between kotlin and swift via the bridge? Is it only a subset of objects, or does anything work?

[olonho]

Objects that make sense in both worlds usually could be transferred, but this question better be more specifics, if you need more specific answer.

[albertgao]

You just need to return it in the function, and generate an iOS framework from it. And inspect the obj-c definition. Sometimes it has a great bridge, sometimes you need to implement an interface. It depends.

[spierce7]

If I have an immutable data class from the kotlin framework, will I have a problem transferring that object to swift?

[svyatoslav.scherbina]

In most cases you won’t have any problems transferring Kotlin object to Swift.
@olonho says about very special objects, e.g. object which inherits Set and List interfaces at the same time (because Objective-C object can’t be NSArray and NSSet at the same time).

[spierce7]

I see. makes sense.