fun <reified R, C : MutableCollection<in R>> Sequence<*>.filterIsInstanceTo( destination: C ): C
Appends all elements that are instances of specified type parameter R to the given destination.
The operation is terminal.
import kotlin.test.*
fun main(args: Array<String>) {
//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<Cat, MutableList<Cat>>(cats)
println(cats) // [Scratchy]
//sampleEnd
}fun <C : MutableCollection<in R>, R> Sequence<*>.filterIsInstanceTo( destination: C, klass: Class<R> ): C
Appends all elements that are instances of specified class to the given destination.
The operation is terminal.
import kotlin.test.*
fun main(args: Array<String>) {
//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
}
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Licensed under the Apache License, Version 2.0.
https://kotlinlang.org/api/latest/jvm/stdlib/kotlin.sequences/filter-is-instance-to.html