NSDataByteArray.kt

import kotlinx.cinterop.memScoped
import kotlinx.cinterop.allocArrayOf
import kotlinx.cinterop.addressOf
import kotlinx.cinterop.usePinned
import platform.Foundation.NSData
import platform.Foundation.create
import platform.posix.memcpy

public fun ByteArray.toData(): NSData = memScoped {
    NSData.create(bytes = allocArrayOf(this@toData),
        length = [email protected]())
}

public fun NSData.toByteArray(): ByteArray = ByteArray([email protected]()).apply {
    usePinned {
        memcpy(it.addressOf(0), [email protected], [email protected])
    }
}

Thanks for this. Its really helpful.