I have an ArrayList<String>. I want to add n copies of a new String to it.
I've Googled generally and searched on StackOverflow. I've looked at the documentation.
Surely there's a better way than doing a loop?
I was hoping for something like:
myArray.addAll (ArrayList<String>(count: 10, value: "123"))
You can initialize a List with a given size n and an initializer function like this:
fun main() {
val n = 10
val defaultList = List(n) { it -> "default" } // you can leave "it ->" here
println(defaultList)
}
This piece of code then outputs
[default, default, default, default, default, default, default, default, default, default]
If you want to intialize an Array<String> directly without using a List as intermediate, you can do
val defaultArray: Array<String> = Array(n) { "default" }
println(defaultArray.contentToString())
in the main and get the same output (even without the it ->, which, indeed, isn't necessary in this case).
myArray.addAll (List (count) { "value" }. The "it ->" is not necessary in this case.
it -> isn't necessary... You can fill up an Array directly, see the last edit of my answer.
myArrayline as code, is because it's not actual code that someone could copy/paste into their kotlin project. But, whatever.