W3cubDocs

/Kotlin

toHashSet

fun CharSequence.toHashSet(): HashSet<Char>

Returns a HashSet of all characters.

© 2010–2017 JetBrains s.r.o.
Licensed under the Apache License, Version 2.0.
https://kotlinlang.org/api/latest/jvm/stdlib/kotlin.text/to-hash-set.html