If I have an expensive calculation that I need to run in a composable, then I almost always instinctively reach for

remember

. But wouldn't a launched effect also serve a similar purpose if I only want something to recompute if x changes? i.e.

val someValue = remember(x) { someHeavyCalculation() }

vs something like

val someValue = null

LaunchedEffect(x){
  someValue = someHeavyCalculation()
}

Does launched effect runs right away in the same frame, or just in the next? Not sure

someValue

would have to be

mutableStateOf

for this to work (apart from it being

val

instead of

var

)

Thats my doubt as well. You might be right

But maybe the "_effects run after successful composition_" part applies only to

SideEffect

. I am actually not sure now 😅

A compose dev will have better insight but I think it applies exclusively to

SideEffect

. I think

LaunchedEffect

runs interleaved with the composition 🤔

No I am fairly certain that the LaunchedEffect lambda runs after the first successful composition. Which is why you sometimes see people using DisposableEffect with an empty

onDispose

because they want this to run instantly and not with 1 frame delay. Relevant thread here https://kotlinlang.slack.com/archives/CJLTWPH7S/p1622560036078600?thread_ts=1622556885.065600&cid=CJLTWPH7S and here https://kotlinlang.slack.com/archives/CJLTWPH7S/p1674253277230959?thread_ts=1673947731.751509&cid=CJLTWPH7S and here https://kotlinlang.slack.com/archives/CJLTWPH7S/p1650034947332099?thread_ts=1650031631.129979&cid=CJLTWPH7S

TIL! Thanks for the clarification