Finding the index of an element in a list scala

Question

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

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

I need to get 3 if I ask f

Answer 1

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

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