Why is there `mutableStateListOf` and `mutableStateMapOf` but no `mutableStateSetOf` ?

# compose

[julioromano]

Why is there mutableStateListOf and mutableStateMapOf but no mutableStateSetOf ?

[Big Chungus]

I'm guessing because collections are harder to diff and as such have more tailored and optimised variants for this.

[Adam Powell]

feel free to file a FR, answer is probably as simple as, "we haven't needed it ourselves yet"

[Zach Klippenstein (he/him) [MOD]]

Also you can trivially implement a set on top of a map (I believe this is actually how some of the standard JVM collections like LinkedHashMap do it)

[Adam Powell]

all of the current ones are basically thin wrappers around a shaded version of kotlinx.collections.immutable collections

[julioromano]

Also you can trivially implement a set on top of a map (I believe this is actually how some of the standard JVM collections like LinkedHashMap do it)

@Zach Klippenstein (he/him) [MOD] I though of that too, because the keys of a Map are indeed a Set. Though couldn’t come up with a simple way of declaring:

val myCollection = remember { mutableStateMapOf<String, Long>() }

and then accessing myCollection as a MutableSet

[Zach Klippenstein (he/him) [MOD]]

Yea you’d have to probably manually implement the interface and delegate