Scala Learning(2): map, flatMap, filter与For表达式_flink filter() scala-CSDN博客

网友收藏2024-01-24 09:31

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链接标题：Scala Learning(2): map, flatMap, filter与For表达式_flink filter() scala-CSDN博客
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文章浏览阅读4.5k次。本文叙述Collections里最常见的三种操作map, flatMap, filter，与For表达式的关系。List对三种方法的实现map在List的实现：abstract class List[+T] { def map[U](f: T => U): List[U] = this match { case x :: xs => f(x) :: xs.map(f) case_flink filter() scala

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