filterIsInstanceTo
Appends all elements that are instances of specified type parameter R to the given destination.
@IgnorableReturnValueinline fun <R, C : MutableCollection<in R>> Array<*>.filterIsInstanceTo(destination: C): C(source)
fun main() {
val mixedArray = arrayOf(1, "two", 3.0, "four", 5)
val strings = mutableListOf<String>()
mixedArray.filterIsInstanceTo(strings)
println(strings) // Output: [two, four]
}