I was looking to use mutable state to declare a va...

# compose

[Rick Regan]

I was looking to use mutable state to declare a variable without initializing it and with the benefit of delegate syntax. If I do lateinit var myState: MutableState<MyState> then I have to reference with myState.value.myProperty. If I do var myState: MyState? by mutableStateOf(null) then I have to reference with myState?.myProperty (or other ways of dealing with nullable types). Is there a form that lets you use myState.myProperty with lateinit?

[Adam Powell]

private var _myState by mutableStateOf<MyState?>(null)
var myState: MyState
  get() = _myState ?: error("myState was not initialized")
  set(value) {
    _myState = value
  }

and hopefully you aren't using lateinit often enough for the above to be cumbersome at scale 🙃

[Adam Powell]

if you are, (a) probably try to avoid that much lateinit, (b) you could write your own implementation of the MutableState<T> interface and a lateinitMutableStateOf factory function of your own that does the above for you and reuse the existing property delegate functions

[Rick Regan]

Very cool, thanks. I don't have too many `lateinit`s -- just trying to avoid a "dummy" initialization for an object or two that don't get their real initial state until preferences are read.