jeffreyolchovy

import scala.math.{BigInt, BigDecimal}

object RecursiveStreams
{
  // natural numbers
  lazy val N: Stream[BigInt] = Stream.cons(BigInt(1), N.map(_ + 1))

  // fibonacci series
  lazy val fib: Stream[BigInt] = Stream.cons(BigInt(0), Stream.cons(BigInt(1), fib.zip(fib.tail).map(a => a._1 + a._2)))