How can I mark LocalDate, LocalDateTime and LocalTime immutable so compose can skip them when they ...

# compose

[Ayla]

How can I mark LocalDate, LocalDateTime and LocalTime immutable so compose can skip them when they haven't changed？

[Jakub Syty]

You have to either create a wrapper over those, like this:

@Stable
data class StableHolder<T>(val value: T)

fun <T : Any> T.wrapAsStable(): StableHolder<T> {
    return StableHolder(this)
}

[Jakub Syty]

Or you can directly mark you ui models as @Stable

[Jakub Syty]

either way you have to have some class that is holding a field with those types and this class have to be explicitly marked as stable/immutable

[Ayla]

Thank you.

[Ayla]

Also, it would be better if Google can provide another way like proguard rules to mark these class😂

[Jakub Syty]

Agree, there is quite a big topic around that at google bugtracker

[Stylianos Gakis]

Yeah, or they’d need to somehow be convinced to have more such 3rd party objects marked as stable by them. Like they did with kotlinx.collections.immutable.ImmutableList and so on.
But either way, I don’t see that happening very soon.