Kotlin HashSet indexOfFirst()
Syntax & Examples

Syntax of HashSet.indexOfFirst()

The syntax of HashSet.indexOfFirst() extension function is:

fun <T> Iterable<T>.indexOfFirst( predicate: (T) -> Boolean ): Int

This indexOfFirst() extension function of HashSet returns index of the first element matching the given predicate, or -1 if the collection does not contain such element.

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