A modern programming language that makes developers happier.

kotlinlang

Probably being thick... I need to construct a boxed inline class from Java (well, Groovy, but kind of the same thing...) in order to put it in a list. I can't currently work out how?

it's not quite the same thing, since Groovy can more easily access things that Java can't

```$ groovysh -cp kotlin-stdlib-1.8.10.jar
groovy:000&gt; kotlin.UInt."box-impl"(-1)
===&gt; 4294967295```

but perhaps reconsider if you have to do this. why do you have a list of boxed inline classes and why does it need to be used outside of Kotlin?

I've got a Kotlin function that returns `List&lt;ValueType&gt;` and I need to test it in Spock, hence Groovy calling Kotlin.

I'm not sure if I can avoid them being boxed while keeping the Kotlin type... all I'm doing is `listOf("1", "2").map { ValueType(it) }.toSet()` and that seems to box them.

But thanks, that's a good point on groovy being able to call members with weird names, that works!

you could build your own specialized `ValueTypeSet` (as `UIntArray` does for `UInt`) that is represented by a `Set&lt;String&gt;` or whatever the `val` you're wrapping is

but that'll be pretty awkward, at least until <https://youtrack.jetbrains.com/issue/KT-44654>

Honestly I could probably just use a data class - it's not like the memory is actually an issue, I just quite like the idea of compiler enforced type aliases!