Scala 集合_some(l) :: tail scala-CSDN博客

网站介绍:文章浏览阅读132次。数组定长数组scala> val a = new Array[String](5)a: Array[String] = Array(null, null, null, null, null)scala> ares0: Array[String] = Array(null, null, null, null, null)scala> a.lengthres1..._some(l) :: tail scala