W3cubDocs

/Kotlin

mapNotNullTo

Platform and version requirements: JVM (1.0), JS (1.0), Native (1.0)
inline fun <R : Any, C : MutableCollection<in R>> CharSequence.mapNotNullTo(
    destination: C, 
    transform: (Char) -> R?
): C

Applies the given transform function to each character in the original char sequence and appends only the non-null results to the given destination.

© 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/map-not-null-to.html