Hi! I’ve got a large byte array (a bitmap) on Swif...

# multiplatform

[Pavel Repkin]

Hi!
I’ve got a large byte array (a bitmap) on Swift side inside UInt8[] array.
How do I pass it to Kotlin?
I have found this answer on Stack Overflow, but it looks very inefficient - every byte is copied in cycle.
Is there a more effective way to transfer the byte array?

[Benoye]

Hey !
Maybe look at this : https://gist.github.com/noahsark769/61cfb7a8b7231e2069a9dab94cf74a62

I don’t know if it is your use case but if you can create a Data or NSData object in Swift from your UInt8[] array, you’ll be able to produce a Kotlin ByteArray

[Pavel Repkin]

Thank you so much, Benoit! That was the right direction.
Turned out converting UInt8[] to Data is pretty straightforward.
let data = Data(bytes: uint8Array, count: arrayLength)