Kotlin HashSet ifEmpty()
Syntax & Examples

Syntax of HashSet.ifEmpty()

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

fun <C, R> C.ifEmpty( defaultValue: () -> R ): R where C : Array<*>, C : R

This ifEmpty() extension function of HashSet returns this array if it's not empty or the result of calling defaultValue function if the array is empty.

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