W3cubDocs

/Kotlin

elementAtOrElse

Platform and version requirements: JVM (1.0), JS (1.0), Native (1.0)
inline fun CharSequence.elementAtOrElse(
    index: Int, 
    defaultValue: (Int) -> Char
): Char

Returns a character at the given index or the result of calling the defaultValue function if the index is out of bounds of this char sequence.

import kotlin.test.*

fun main(args: Array<String>) {
//sampleStart
val list = listOf(1, 2, 3)
println(list.elementAtOrElse(0) { 42 }) // 1
println(list.elementAtOrElse(2) { 42 }) // 3
println(list.elementAtOrElse(3) { 42 }) // 42

val emptyList = emptyList<Int>()
println(emptyList.elementAtOrElse(0) { "no int" }) // no int
//sampleEnd
}

© 2010–2020 JetBrains s.r.o. and Kotlin Programming Language contributors
Licensed under the Apache License, Version 2.0.
https://kotlinlang.org/api/latest/jvm/stdlib/kotlin.text/element-at-or-else.html