@pavlospt

selectedChoices.foldIndexed(mutableListOf<Int>()) { index, acc, bool ->
        if(bool) {
            acc.add(index)
            acc
        }
        else acc
    }

Can be ?

lupajz: actually, acc is always returned so

if (bool) { acc.add(index) }; acc

Where

acc

is the list of indexes right?

yes, your future list of indexes

Great! Thank you 🙂