W3cubDocs

/Kotlin

indexOf

Platform and version requirements: JVM (1.0), JS (1.0), Native (1.0)
fun <T> Sequence<T>.indexOf(element: T): Int

Returns first index of element, or -1 if the sequence does not contain element.

The operation is terminal.

© 2010–2019 JetBrains s.r.o.
Licensed under the Apache License, Version 2.0.
https://kotlinlang.org/api/latest/jvm/stdlib/kotlin.sequences/index-of.html