By Alvin Alexander. Last updated: November 4, 2018
If you ever need to create and populate a Kotlin list, I can confirm that these approaches work for an immutable and mutable lists:
// fill an immutable list
val doubles = List(5) { i -> i * 2 }
// fill a mutable list of ten elements with zeros
val ints = MutableList(10) { 0 }
The Kotlin REPL shows how these approaches work:
> val doubles = List(5) { i -> i * 2 }
> doubles
[0, 2, 4, 6, 8]
> val ints = MutableList(10) { 0 }
> ints
[0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
If you ever need to populate/initialize a Kotlin list when you create it, I hope these examples area helpful.
