unzip

Common
JVM
JS
Native
1.0
fun <T, R> Array<out Pair<T, R>>.unzip(): Pair<List<T>, List<R>>
(source)

Returns a pair of lists, where first list is built from the first values of each pair from this array, second list is built from the second values of each pair from this array.

import kotlin.test.*

fun main(args: Array<String>) {
//sampleStart
val array = arrayOf(1 to 'a', 2 to 'b', 3 to 'c')
println(array.unzip()) // ([1, 2, 3], [a, b, c])
//sampleEnd
}
Common
JVM
JS
Native
1.0
fun <T, R> Iterable<Pair<T, R>>.unzip(): Pair<List<T>, List<R>>
(source)

Returns a pair of lists, where first list is built from the first values of each pair from this collection, second list is built from the second values of each pair from this collection.



fun main(args: Array<String>) {
//sampleStart
val list = listOf(1 to 'a', 2 to 'b', 3 to 'c')
println(list.unzip()) // ([1, 2, 3], [a, b, c])
//sampleEnd
}