kotlin-stdlib/kotlin.sequences/unzip

unzip

fun <T, R> Sequence<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 sequence, second list is built from the second values of each pair from this sequence.

The operation is terminal.

Since Kotlin

1.1

Samples

import kotlin.test.*

fun main() { 
   //sampleStart 
   val result = generateSequence(0 to 1) { it.first + 1 to it.second * 2 }.take(8).unzip()

println(result.first.toList()) // [0, 1, 2, 3, 4, 5, 6, 7]
println(result.second.toList()) // [1, 2, 4, 8, 16, 32, 64, 128] 
   //sampleEnd
}
fun <T, R> Sequence<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 sequence, second list is built from the second values of each pair from this sequence.

The operation is terminal.

Since Kotlin

1.0

Samples

import kotlin.test.*

fun main() { 
   //sampleStart 
   val result = generateSequence(0 to 1) { it.first + 1 to it.second * 2 }.take(8).unzip()

println(result.first.toList()) // [0, 1, 2, 3, 4, 5, 6, 7]
println(result.second.toList()) // [1, 2, 4, 8, 16, 32, 64, 128] 
   //sampleEnd
}