Can we mutate the items list being passed in to th...

# compose

[Kshitij Patil]

Can we mutate the items list being passed in to the LazyColumnFor ? Like adding or removing items and expect the changes to be reflected in the LazyColumn ?

Something like adapter.notifyDatasetChanged() we used to do with RecyclerView

[Timo Drick]

Yes but you need to use:

val list: SnapshotStateList<YouDataType> = mutableStateListOf()

When you change this list using add, remove, ... the UI will refresh automatically

[Kshitij Patil]

Okay! So it'll just recompose that single add/remove right? Or it'll recompose the entire LazyColumn

I'm concerned whether there are any performance hits by doing so?

[Timo Drick]

I am not sure how exactly this is implemented in the LazyColumn/LazyRow. But currently this is the only way i am aware of to change the content dynamically without refreshing the complete list.

[Dominaezzz]

I have used both and SnapshotStateList does granular updates, State<List<...>> does not.