isn't possible to implement the spread operator in a class, is it?

what are you trying to do?

I think they are asking to make

*

an

operator fun

, so you can enable it on instances of your own classes and not just arrays. Which I think is a good idea, it would allow to pass any collection to

vararg

.

Exactly

val color = Vec4()

val vertexData = floatArrayOf(*color)

Interestingly there seems to be

kotlin.jvm.internal.SpreadBuilder

already, which supports spreading

Collection

,

Iterable

and

Iterator

, but the compiler does not let you.