scala map里面怎么传入函数

Question

scala map里面怎么传入函数

Answer 1

def flatMap1(): Unit = {val li = List(1,2,3)val res = li.flatMap(x => x match {case 3 => List('a','b')case _ => List(x*2)})println(res)}def map1(): Unit = {val li = List(1,2,3)val res = li.map(x => x match {case 3 => List('a','b')case _ => x*2})println(res)}def main(args: Array[String]): Unit = {flatMap1()map1()}}