2
有没有比通过Seq
更优雅的方法?如何从Scala集创建无限集合
val origin = Set("a", "b")
val intermediate = origin.toSeq
val stream = Stream.from(0).map { index =>
intermediate(index % intermediate.size)
}.toIterator
stream.next() // => "a"
stream.next() // => "b"
stream.next() // => "a"
我特别针对Scala 2.9。
这您可能感兴趣的:http://stackoverflow.com/questions/2097851/scala-repeat-a-finite-list-infinitely –
@AlexisC。为什么不是这个答案?这正是我期待的! –