Hi guys 🙂 What would be the most idiomatic way to add 2 elements to a list, one at the beginning and one at the end? So far I have

listOf(element0) + listOfElements + elementLast

But I’m not sure if there are more efficient / maybe clearer options available ?

I like

buildList

val list = buildList {
    add(element0)
    addAll(elements)
    add(elementLast)
}

Do you mean you want to add these two elements to an existing mutable list, or create a new list from the original and the two elements?

Second option 🙂 But I very much like @Javier’s proposition, did not know about it, it’s cleaner than what I was doing. Thanks! 🙂

Isn’t buildList experimental? It’s not much more complex to do it “manually” 🙂

val listA = listOf("b", "c", "d")
val list = mutableListOf<String>().apply {
    add("a")
    addAll(listA)
    add("e")
}