arrow-core-data / arrow.core / kotlin.sequences.Sequence / unzip

unzip

fun <A, B> Sequence<Pair<A, B>>.unzip(): Pair<Sequence<A>, Sequence<B>>

unzips the structure holding the resulting elements in an Pair

import arrow.core.unzip

fun main(args: Array<String>) {
  //sampleStart
  val result = sequenceOf("A" to 1, "B" to 2).unzip()
  //sampleEnd
  println("(${result.first.toList()}, ${result.second.toList()})")
}

fun <A, B, C> Sequence<C>.unzip(fc: (C) -> Pair<A, B>): Pair<Sequence<A>, Sequence<B>>

after applying the given function unzip the resulting structure into its elements.

import arrow.core.unzip

fun main(args: Array<String>) {
  //sampleStart
  val result =
   sequenceOf("A:1", "B:2", "C:3").unzip { e ->
     e.split(":").let {
       it.first() to it.last()
     }
   }
  //sampleEnd
  println("(${result.first.toList()}, ${result.second.toList()})")
}