A modern programming language that makes developers happier.

kotlinlang

Someone know why `freeze()` isn't part of the stdlib-common?
Would be useful in multiplatform common code.

`freeze()` is a no-op on JVM/JS so I guess this is why. It's pretty easy to do your own version though

You can use <https://github.com/touchlab/Stately> if you want to have an implementation

Thanks for the link <@U79JY5TL3>!

I had some multiplatform code with kotlin 1.3 that used a bunch of `@SharedImmutable` annotations on some `val`s in `data` classes and `enum` classes, but it seems it doesn't work anymore with kotlin &gt;= 1.4. I needed those annotations for the iOS clients of my library as the data returned is transfering across other threads.

Is calling `.freeze()` at a few strategic places the way to go or is there a more "standard" way to replace these `@SharedImmutable`?

TBH at this point, I'd start looking into Kotlin 1.6 and the new memory model

Unless this is code you in in production right now in which case I don't know

Maybe you can refactor your code to have `@SharedImmutable` as top level properties instead of data classes properties

Or calling `.freeze()` in the "appropriate" place would work too

I think "long term" your suggestion makes a lot of sense. However, yes this is code already in production, so I'm a bit reluctant (to use 1.6). Also, I don't have much time right now, so I think I will bite the bullet and use a `.freeze()` multiplatform implementation for now.

I don't understand why `@SharedImmutable` doesn't work anymore though. It doesn't seem documented anywhere.