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lastIndexOf

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

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

The operation is terminal.

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Licensed under the Apache License, Version 2.0.
https://kotlinlang.org/api/latest/jvm/stdlib/kotlin.sequences/last-index-of.html