listOfNotNull
Platform and version requirements: JVM (1.0), JS (1.0), Native (1.0)
fun <T : Any> listOfNotNull(element: T?): List<T>
Returns a new read-only list either of single given element, if it is not null, or empty list if the element is null. The returned list is serializable (JVM).
import kotlin.test.*
fun main(args: Array<String>) {
//sampleStart
val empty = listOfNotNull<Any>(null)
println(empty) // []
val singleton = listOfNotNull(42)
println(singleton) // [42]
val list = listOfNotNull(1, null, 2, null, 3)
println(list) // [1, 2, 3]
//sampleEnd
}
Platform and version requirements: JVM (1.0), JS (1.0), Native (1.0)
fun <T : Any> listOfNotNull(vararg elements: T?): List<T>
Returns a new read-only list only of those given elements, that are not null. The returned list is serializable (JVM).
import kotlin.test.*
fun main(args: Array<String>) {
//sampleStart
val empty = listOfNotNull<Any>(null)
println(empty) // []
val singleton = listOfNotNull(42)
println(singleton) // [42]
val list = listOfNotNull(1, null, 2, null, 3)
println(list) // [1, 2, 3]
//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/list-of-not-null.html