Replace element in List with scala

Question

How do you replace an element by index with an immutable List.

E.g.

val list = 1 :: 2 ::3 :: 4 :: List()

list.replace(2, 5)

Answer 1

following is a simple example of String replacement in scala List, you can do similar for other types of data

    scala> val original: List[String] = List("a","b")

    original: List[String] = List(a, b)

    scala> val replace = original.map(x => if(x.equals("a")) "c" else x)

    replace: List[String] = List(c, b)