I often come across a situation where i fetch some...

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[arve]

I often come across a situation where i fetch some data class, process a field, then return the result. A contrived example:

fun getFilm(title: String): Film {
    val data = db.getFilm(title)
    return data.copy(actors = data.actors.filterNot { it.isDead) })
}

Is there a way to avoid the temp variable without hitting the db twice? Or put differently, is there a way of referencing the source object in a copy operation somehow?
Ideally I'm looking for something like fun getFilm(t: String) = db.getFilm(t).copy(actors = actors.filterNot { it.isDead })
I'm aware of with, but in cases like this, with feels even more convoluted.

[Tom Adam]

You should use apply in this case. That returns the object U call apply on basically. Run, also, apply, let has all their use-cases.