kotlin inline fun performOperation(a: Int, b: Int): Int = a + b kotlin val numbers = listOf(1, 2, 3, 4, 5) val sum = numbers.mapToInt { it }.sum() kotlin val numbers = listOf(1, 2, 3, 4, 5) val sum = numbers.asSequence().map { it * 2 }.sum() kotlin val numbers = ArrayList<Int>(1000) numbers.addAll(listOf(1, 2, 3, 4, 5))