arrayListOf

import kotlin.test.*

fun main() { 
   //sampleStart 
   val list = arrayListOf<Int>()
println("list.isEmpty() is ${list.isEmpty()}") // true

list.addAll(listOf(1, 2, 3))
println(list) // [1, 2, 3] 
   //sampleEnd
}
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​
val list = arrayListOf<Int>()
println("list.isEmpty() is ${list.isEmpty()}") // true
​
list.addAll(listOf(1, 2, 3))
println(list) // [1, 2, 3] 
​
Open in Playground →
Target: JVMRunning on v.2.1.20

import kotlin.test.*

fun main() { 
   //sampleStart 
   val list = arrayListOf(1, 2, 3)
println(list) // [1, 2, 3]

list += listOf(4, 5)
println(list) // [1, 2, 3, 4, 5] 
   //sampleEnd
}
xxxxxxxxxx
 
​
val list = arrayListOf(1, 2, 3)
println(list) // [1, 2, 3]
​
list += listOf(4, 5)
println(list) // [1, 2, 3, 4, 5] 
​
Open in Playground →
Target: JVMRunning on v.2.1.20