One thing that makes Swift is value semantics Are there any kotlinlang #getting-started

One thing that makes Swift is value semantics Are there any plans of adding this to the language? I presume real value types are a pipedream since jvm doesnt care, but the var semantics is way nicer code than

.copy

so maybe just the syntax as a sugar?

ephemient

10/09/2023, 11:34 PM

https://github.com/Kotlin/KEEP/blob/master/notes/value-classes.md

there is some hope for future JVMs, https://jdk.java.net/valhalla/ but it's not ready yet

ursus

10/09/2023, 11:46 PM

soo nothing until valhalla?

realistically speaking

I'd gladly accept it just as a sugar for copy

btw do you have any info as on what big is coming next other than the new compiler? which sure is great for performance, but not really a language feature, is it

Riccardo Lippolis

10/10/2023, 5:09 AM

The main focus is on K2 right now, which will also bring some advantages language-wise. You can see what is being worked on in the roadmap: https://kotlinlang.org/docs/roadmap.html

ephemient

10/10/2023, 5:27 AM

to clarify, the Kotlin language is not changing with 2.0 (aside from minor fixes), only the Kotlin compiler implementation changing to K2

👍 2

https://blog.jetbrains.com/kotlin/2023/02/k2-kotlin-2-0/

We are consciously avoiding introducing any new features in Kotlin 2.0.

Wout Werkman

10/10/2023, 8:21 AM

Kotlin's multi-field value classes do not strictly depend on Valhala. You can follow the progress in KT-1179.

I'd gladly accept it just as a sugar for copy

While there are no compiler plugins that get your desired semantics via

var

, there are some cool compiler plugins to make working with immutable data more pleasant. https://arrow-kt.io/learn/immutable-data/intro/