Scala Range与Stream

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一 Range

1. scala>1 to 10
2. res20: scala.collection.immutable.Range.Inclusive=Range1 to 10
4. scala>1 to 10 by 2
5. res21: scala.collection.immutable.Range= inexact Range1 to 10 by 2
7. scala>(1 to 10).toList
8. res22:List[Int]=List(1,2,3,4,5,6,7,8,9,10)
10. scala>1 until 10
11. res23: scala.collection.immutable.Range=Range1 until 10

二 Stream

1. scala>1#::2 #::3 #::Stream.empty
2. res24: scala.collection.immutable.Stream[Int]=Stream(1,?)
4. scala> val stream =(1 to 100000).toStream
5. stream: scala.collection.immutable.Stream[Int]=Stream(1,?)
7. scala> stream.head
8. res25:Int=1
10. scala> stream.tail
11. res26: scala.collection.immutable.Stream[Int]=Stream(2,?)