Hello, I have some difficulties understanding

by state

and

remember

differences. Could someone guide me towards some documentation about it?

there is state codelab.

remember

is tied up to composable itself. it serves to "survive"

recomposition

but when

composable

is removed from the screen remembered value is forgotten 😄.

by state

is used to store

state

and you can use it with observer pattern or

hoist

it to a higher point

Thanks. To clarify my understanding.

remember

is limited to the scope of the component. If the component is destroyed, there will be nothing to remember. The state is something external to the component, if the component is destroyed, but recreated later, it will get the same state than the previous destroyed component?

Right. And when state changes composable changes

Thanks! So: • If the state the change, it will refresh the component; • If something remembered change it, it will do nothing; Is that correct? If so, what does

remember { mutableStateOf() }

instead of

by State {}
by MutableState {}

?

mutableStateOf(initialValue) returns MutableState, and remember keeps it from reinitializing to initialValue

So changing the mutable state will cause a re-composition, and in the re-composed component, remember will just reuse the previous mutablestate instance used (the one that caused the recomposition), with the latest value used.

yes

So, what are the delegations here for?

convenience.

val mutableState = remember { mutableStateOf(false) }
mutableState.value = true

var state by remember { mutableStateOf(false) }
state = true