Which of these is likely to perform better? I assume the

List

version but you never know, figured I'd ask others:

fun recur(...): Sequence<*> = sequence {
    yield(...)
    getQueryRelations(innerRequest).forEach {
        yieldAll(
            recur(...)
        )
    }
}

fun recur(...): List<*> {
    return listOf(...) + getQueryRelations(innerRequest).flatMap {
        recur(...)
    }
}

possibly irrelevant, but if

getQueryRelations(innerRequest)

is a

suspend fun

then your

sequence

version can't be used directly.

sequenceOf(...) + getQueryRelations(innerRequest).asSequence().flatMap { ... }

could be used though

.flatMapTo(this)

I had never thought of that, that's pretty clever!