在列表Scala中查找元素的索引 [英] Finding the index of an element in a list scala

问题描述

如何在Scala列表中找到元素的索引.

How do I find the index of an element in a Scala list.

val ls = List("Mary", "had", "a", "little", "lamb")

如果我要求小"的索引，我需要得到3

I need to get 3 if I ask for the index of "little"

推荐答案

scala> List("Mary", "had", "a", "little", "lamb").indexOf("little")
res0: Int = 3

您可以尝试阅读 scaladoc以获得列表下次. ;)

You might try reading the scaladoc for List next time. ;)

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