I wanted to use "when with capture" in the followi...

# announcements

[nkiesel]

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)?

[Alowaniak]

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

[nkiesel]

I like the let solution, thanks!