How do I prevent `PlotColors` being recreated on e...

# compose

[dimsuz]

How do I prevent PlotColors being recreated on each composable function call here? I can't put this in "remember", because MyTheme.colors.someColor is a Composable getter:

fun MyComposable() {
  val colors = PlotColors(
    positiveColor = MyTheme.colors.indicatorContentGreen,
    negativeColor = MyTheme.colors.indicatorBackgroundRed,
  )
}

[dimsuz]

Oh. I suppose I could do

val positiveColor = MyTheme.colors.indicatorContentGreen,
  val negativeColor = MyTheme.colors.indicatorContentGreen,
  val colors by remember { PlotColors(positiveColor, negativeColor) }

but that would get very verbose in presence of many colors

[Csaba Kozák]

Seems to be an unnecessary optimisation. You end up creating a lot more objects when using compose anyways. Compose will skip recomposition if your input does not change.

[dimsuz]

Thought so too, asked just in case I sometime will need something like this in a performance critical path with a lot of updates.

[Csaba Kozák]

If you have expensive calculations, you can use derivedStateOf