一 Range
scala>1 to 10 res20: scala.collection.immutable.Range.Inclusive=Range1 to 10 scala>1 to 10 by 2 res21: scala.collection.immutable.Range= inexact Range1 to 10 by 2 scala>(1 to 10).toList res22:List[Int]=List(1,2,3,4,5,6,7,8,9,10) scala>1 until 10 res23: scala.collection.immutable.Range=Range1 until 10
二 Stream
scala>1#::2 #::3 #::Stream.empty res24: scala.collection.immutable.Stream[Int]=Stream(1,?) scala> val stream =(1 to 100000).toStream stream: scala.collection.immutable.Stream[Int]=Stream(1,?) scala> stream.head res25:Int=1 scala> stream.tail res26: scala.collection.immutable.Stream[Int]=Stream(2,?)
