In swift I have array with data: [Uint8]. In kotl...

# kotlin-native

[Konstantin Petrukhnov]

In swift I have array with data: [Uint8]. In kotlin i have class that should process that data. What kotlin type i should use, that could hold this value? List<Byte> gives [NSNumber], but it will create new object. I wonder if i could avoid creating new objects.

[Konstantin Petrukhnov]

In other words, I need to pass [UInt8] as a reference from Swift to Kotlin so it could process it.

[albertgao]

Can’t provide more info but seems when I generate a kotlin method which needs an Int, it will be converted to UInt32 in swift side. Maybe you need to cast int8 to int32?

[sksk]

I wonder why this was closed: https://github.com/JetBrains/kotlin-native/pull/534

[olonho]

it was closed, because unsigned types will be implemented universally across all Kotlin flavours, and with frontend support

[Konstantin Petrukhnov]

I'm also fine with "passing reference to memory block" and convert it in kotlin later on demand. Not sure if it is possible...

[olonho]

yes, just use CPointer<ByteVar>, and restore data from there.

[Konstantin Petrukhnov]

@olonho can't find that class in swift or kotlin...

[olonho]

it is K/N-specific class, see for example https://github.com/JetBrains/kotlin-native/blob/2934588bbed99b7dbb4c8949c6d580da3d9cdf49/samples/nonBlockingEchoServer/src/main/kotlin/EchoServer.kt#L57