I’m trying to remember a custom object I don’t want to mutate during the composable lifecycle but I ...

# compose

[jean]

I’m trying to remember a custom object I don’t want to mutate during the composable lifecycle but I don’t want it to be recreated neither. It works well with

val myCustomObject by remember { mutableStateOf(MyCustomObject()) }

If I try without mutableStateOf I get the following compiler error Property delegate must have a 'getValue(Nothing?, KProperty0<*>)' method.
I tried to add this to MyCustomObject but it didn’t work

operator fun getValue(thisRef: Nothing?, property: KProperty0<*>): MyCustomObject  = this

I get 'operator' modifier is not applicable to function: second parameter must be of type KProperty<*> or its supertype.
Is there a way to make this work? Or should I do it another way?

[Chrimaeon]

Get yourself familiar with property delegation, what the by keyword means and why you cannot use it without the mutableState
https://kotlinlang.org/docs/delegated-properties.html

The you will realize that you can just use remember and a simple assignment.

[Sargun Vohra]

State has the getValue as an extension function. You just need to import it. If you’re using Android Studio or Fleet, that import should be suggested for you

[Sargun Vohra]

If you’re trying to do it without state, you want = instead of by

[jean]

The main issue was that I tried to delegate the property of type MyCustomObject with by to the MyCustomObject class itself. From what read in the doc, that’s not how it’s meant to be used. val myObject = remember { MyCustomObject() } works fine, thanks for the help!