arrow-core-data / arrow.core / kotlin.collections.Iterable / padZip

padZip

fun <A, B> Iterable<A>.padZip(other: Iterable<B>): List<Pair<A?, B?>>

Returns a ListPairA?,B? containing the zipped values of the two lists with null for padding.

Example:

import arrow.core.*

//sampleStart
val padRight = listOf(1, 2).padZip(listOf("a"))        // Result: [Pair(1, "a"), Pair(2, null)]
val padLeft = listOf(1).padZip(listOf("a", "b"))       // Result: [Pair(1, "a"), Pair(null, "b")]
val noPadding = listOf(1, 2).padZip(listOf("a", "b"))  // Result: [Pair(1, "a"), Pair(2, "b")]
//sampleEnd

fun main() {
  println("padRight = $padRight")
  println("padLeft = $padLeft")
  println("noPadding = $noPadding")
}

inline fun <A, B, C> Iterable<A>.padZip(other: Iterable<B>, fa: (A?, B?) -> C): List<C>

Returns a List containing the result of applying some transformation (A?, B?) -> C on a zip.

Example:

import arrow.core.*

//sampleStart
val padZipRight = listOf(1, 2).padZip(listOf("a")) { l, r -> l to r }     // Result: [Pair(1, "a"), Pair(2, null)]
val padZipLeft = listOf(1).padZip(listOf("a", "b")) { l, r -> l to r }    // Result: [Pair(1, "a"), Pair(null, "b")]
val noPadding = listOf(1, 2).padZip(listOf("a", "b")) { l, r -> l to r }  // Result: [Pair(1, "a"), Pair(2, "b")]
//sampleEnd

fun main() {
  println("padZipRight = $padZipRight")
  println("padZipLeft = $padZipLeft")
  println("noPadding = $noPadding")
}