Hey guys! Anyone knows what should something like this be implemented in Kotlin?

export interface Item {
  [label: string]: string[];
}

export interface SequenceMap {
  '1': string[] | Item ;
  '2': string[] | Item ;
}

I know that I can use a

sealed class

to mimic the

string[] | Item

. But what is really bugging me is how can I do something like the Item interface? I’m not that used to Kotlin but this is something somewhat trivial in Typescript. Any help would be great! Thanks!

Am I correctly understanding that you’re looking for a way to use an arbitrary string to ask Item for a value?

Yeah, it might be impossible on Kotlin right?

And even with the object SequenceMap using the named entries ‘1’ and ‘2’, that’s something that I can’t do on kotlin, or am i missing something?

if you don’t mind putting the names of the properties in sourcecode, there are “quick” ways of having properties that do that in the background

just has two properties

I’d declare them as explicit properties then

class SequenceMap() {
 val one get(): NodeSealedParentType = ...
 val two get(): NodeSealedParentType = ...
}

yeah, I’d have to work around that 😛

you could do it as a data class too

Because I will have some classes implementing that interface

ah so that interface is trying to enforce that the child has elements for those properties

Yeah it is

typescript, amirite

Yup

I would probably have an interface that enforces two properties exist … maybe do something fun with delegate properties on the implementing classes

Do you know of some resource online that I could take a look into for a similar solution?

not sure what you’re really trying to do with that type modeling, so can’t really help on that side (maybe some multimap libraries?) but for stuff like operators and delegate properties the kotlin docs are pretty good. https://kotlinlang.org/docs/reference/delegated-properties.html

Why not just use a Map structure for Item?