I have released a library called kotlin-tree that allows for declarative handling of multi-way tree ...

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[Yuito Sato]

I have released a library called kotlin-tree that allows for declarative handling of multi-way tree data in Kotlin. 🎉
Our API lets you define and perform operations on tree data just like Kotlin’s Collection APIs (map, filter, fold, etc.).

Example usage:

val treeNode: TreeNode<Int> = nodeOf(
    1,
    listOf(
        nodeOf(11, listOf(leafOf(111), leafOf(112))),
        leafOf(12)
    )
)
treeNode.map { ele -> ele * 2 }

Beyond node content operation, kotlin-tree supports conversion between different tree data representations like Adjacency Models and Path Enumeration Models.
If you are interested, feel free to explore our repository at:
https://github.com/YuitoSato/kotlin-tree

[Javier]

Do you think you would add a DSL for trees and transform it into a multiplatform library?

Something like:

node("a") {
    node("b") {
        node("c")
    }
    node("d")
    node("f")
}

[Yuito Sato]

@Javier
That’s a good idea. Thank you.
I think I’ll give DSL-style implementation as the next development theme.

Which platform in particular would you like to use for multiple platforms other than jvm? Android?

[Yuito Sato]

Supported DSL Style. Thank you for your idea.
https://github.com/YuitoSato/kotlin-tree/releases/tag/1.5.0

[Javier]

Don’t worry 😉 I have a custom stdlib in which I added a tree some months ago which I could stop maintain if there is something there to replace it.

As it is a common data structure, it should support all platforms IMO

[Yuito Sato]

Thank you. I seems to be hard to support multi platforms, but I’ll try it.

[Javier]

Same setup with less code indeed, the only thing you have to remember is to publish from a Mac machine, as it is the only which is able to build all targets