I wanted to use "when with capture" in the following way:

val b = when(val computed = f()) { computed > 0 -> computed + 1 ; else -> computed - 1 }

but this produces a syntax error. Is the only way really to use

val computed = f(); val b = when {  computed > 0 -> computed + 1 ; else -> computed - 1 }

(with leaking of

computed

outside of the

when

scope)?

or a

val b = f().let { when { it > 0 -> it + 1; else -> it - 1} }

I guess if computed is an int then

val b = when(val computed = f()) {
  in 1..Int.MAX_VALUE -> computed + 1
  else -> computed - 1
}

could also work

I like the

let

solution, thanks!