Kotlin HashSet flatMapTo()
Syntax & Examples

Syntax of HashSet.flatMapTo()

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

fun <T, R, C : MutableCollection<in R>> Iterable<T>.flatMapTo( destination: C, transform: (T) -> Iterable<R> ): C

This flatMapTo() extension function of HashSet appends all elements yielded from results of transform function being invoked on each element of original collection, to the given destination.

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