Fib generator using kotlin coroutine

fib_yield.kt

fun main(args: Array<String>) {
    fib.take(10).forEach { println(it) }
}

val fib = buildSequence {
    var tmp = Pair(0, 1)
    while(true) {
        yield(tmp.first)
        tmp = Pair(tmp.second, tmp.first + tmp.second)
    }
}