object ToString { def toString(l: List[Double]): List[String] = FoldRight.foldRight(l, Nil: List[String])((a: Double, b: List[String]) => a.toString() :: b) def main(args: Array[String]): Unit = { println(toString(List(1.010, 2.1, 3.2, 4.3, 5.4))) } }
List(1.01, 2.1, 3.2, 4.3, 5.4)
原文：http://www.cnblogs.com/JonkeyGuan/p/5423766.html