Fibonacci Sequence in Kotlin (5)

gistfile1.txt

import java.math.BigInteger
import kotlin.math.plus

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

private fun fibo() =
    stream(BigInteger.ZERO to BigInteger.ONE, {(e) ->
        e.second to (e.first plus e.second)
    })

Here is rewrite in current Kotlin:

    val fib = generateSequence(1 to 1) { it.second to it.first + it.second }.map { it.first }
    println(fib.take(10).joinToString())