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getOrElse

Platform and version requirements: JVM (1.0), JS (1.0), Native (1.0)
inline fun <T> Array<out T>.getOrElse(
    index: Int, 
    defaultValue: (Int) -> T
): T
inline fun ByteArray.getOrElse(
    index: Int, 
    defaultValue: (Int) -> Byte
): Byte
inline fun ShortArray.getOrElse(
    index: Int, 
    defaultValue: (Int) -> Short
): Short
inline fun IntArray.getOrElse(
    index: Int, 
    defaultValue: (Int) -> Int
): Int
inline fun LongArray.getOrElse(
    index: Int, 
    defaultValue: (Int) -> Long
): Long
inline fun FloatArray.getOrElse(
    index: Int, 
    defaultValue: (Int) -> Float
): Float
inline fun DoubleArray.getOrElse(
    index: Int, 
    defaultValue: (Int) -> Double
): Double
inline fun BooleanArray.getOrElse(
    index: Int, 
    defaultValue: (Int) -> Boolean
): Boolean
inline fun CharArray.getOrElse(
    index: Int, 
    defaultValue: (Int) -> Char
): Char
@ExperimentalUnsignedTypes inline fun UIntArray.getOrElse(
    index: Int, 
    defaultValue: (Int) -> UInt
): UInt
@ExperimentalUnsignedTypes inline fun ULongArray.getOrElse(
    index: Int, 
    defaultValue: (Int) -> ULong
): ULong
@ExperimentalUnsignedTypes inline fun UByteArray.getOrElse(
    index: Int, 
    defaultValue: (Int) -> UByte
): UByte
@ExperimentalUnsignedTypes inline fun UShortArray.getOrElse(
    index: Int, 
    defaultValue: (Int) -> UShort
): UShort

Returns an element at the given index or the result of calling the defaultValue function if the index is out of bounds of this array.

Platform and version requirements: JVM (1.0), JS (1.0), Native (1.0)
inline fun <T> List<T>.getOrElse(
    index: Int, 
    defaultValue: (Int) -> T
): T

Returns an element at the given index or the result of calling the defaultValue function if the index is out of bounds of this list.

Platform and version requirements: JVM (1.0), JS (1.0), Native (1.0)
inline fun <K, V> Map<K, V>.getOrElse(
    key: K, 
    defaultValue: () -> V
): V

Returns the value for the given key, or the result of the defaultValue function if there was no entry for the given key.

import kotlin.test.*
import java.util.*

fun main(args: Array<String>) {
//sampleStart
val map = mutableMapOf<String, Int?>()
println(map.getOrElse("x") { 1 }) // 1

map["x"] = 3
println(map.getOrElse("x") { 1 }) // 3

map["x"] = null
println(map.getOrElse("x") { 1 }) // 1
//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.collections/get-or-else.html