filterIsInstanceTo
fun <C : MutableCollection<in R>, R> Sequence<*>.filterIsInstanceTo(destination: C, klass: Class<R>): C(source)
Appends all elements that are instances of specified class to the given destination.
The operation is terminal.
Since Kotlin
1.0Samples
import kotlin.test.*
fun main() {
//sampleStart
open class Animal(val name: String) {
override fun toString(): String {
return name
}
}
class Dog(name: String): Animal(name)
class Cat(name: String): Animal(name)
val animals: List<Animal> = listOf(Cat("Scratchy"), Dog("Poochie"))
val cats = mutableListOf<Cat>()
println(cats) // []
animals.filterIsInstanceTo(cats, Cat::class.java)
println(cats) // [Scratchy]
//sampleEnd
}