filterTo
inline fun <T, C : MutableCollection<in T>> Sequence<T>.filterTo(
destination: C,
predicate: (T) -> Boolean
): C
(source)
Appends all elements matching the given predicate to the given destination.
The operation is terminal.
import kotlin.test.*
fun main(args: Array<String>) {
//sampleStart
val numbers: List<Int> = listOf(1, 2, 3, 4, 5, 6, 7)
val evenNumbers = mutableListOf<Int>()
val notMultiplesOf3 = mutableListOf<Int>()
println(evenNumbers) // []
numbers.filterTo(evenNumbers) { it % 2 == 0 }
numbers.filterNotTo(notMultiplesOf3) { number -> number % 3 == 0 }
println(evenNumbers) // [2, 4, 6]
println(notMultiplesOf3) // [1, 2, 4, 5, 7]
//sampleEnd
}