Context: ```data class Test(val num: Int) { fun other(): Int { println("hit") re...

# announcements

[karelpeeters]

Context:

data class Test(val num: Int) {
    fun other(): Int {
        println("hit")
        return num + 5
    }
}

Is there an elegant way to achieve something like list.first { it.other() > 5 }.other(), but without having to call other twice? list.map { it.other() }.first { it > 5 } is also not really what I want, I basically want the minimum possible of other calls.

[dany]

you probably can do something with a fold

[marstran]

You can use a sequence: list.asSequence().map { it.other() }.first { it > 5 }

[karelpeeters]

How could I forget about those, thanks!

[karelpeeters]

I was surprised when InteliJ suggested a function firstNotNullResult while typing something unrelated, turns out I'm not the only one that wants this: https://github.com/cbeust/klaxon/blob/master/src/main/kotlin/com/beust/klaxon/internal/Extensions.kt