Generate UUID on kotlin-multiplatform?

Question

Are there any kotlin-multiplatform common functions to get a UUID/GUID?

 // ideally something like this
 val newUUID = UUID() // "1598044e-5259-11e9-8647-d663bd873d93"
 println("newUUID = $newUUID")

I'd prefer not to make separate Android and iOS versions using expect-actual.

Answer 1

That one may work https://github.com/benasher44/uuid

The sources of the project use the Kotlin Multiplatform project to implement the UUID library. See https://kotlinlang.org/docs/reference/building-mpp-with-gradle.html for more details

Answer 2

As per the Kotlin multiplatform documentation, you can make an expect/actual function to use the Android (java) and iOS (NSUUID) specific implementations:

// Common
expect fun randomUUID(): String

// Android
import java.util.*

actual fun randomUUID() = UUID.randomUUID().toString()

// iOS
import platform.Foundation.NSUUID

actual fun randomUUID(): String = NSUUID().UUIDString()