DedSec Project

01 null safety — DedSec Project

fun main() { val name: String? = null println(name?.uppercase() ?: "Unknown") val scores = listOf(2, 4, 8) println(scores.sum()) }

Source reference

fun main() {
    val name: String? = null
    println(name?.uppercase() ?: "Unknown")
    val scores = listOf(2, 4, 8)
    println(scores.sum())
}