Pair

data class Pair<out A, out B>(val first: A, val second: B) : Serializable(source)

Represents a generic pair of two values.

There is no meaning attached to values in this class, it can be used for any purpose. Pair exhibits value semantics, i.e. two pairs are equal if both components are equal.

An example of decomposing it into values:

Samples



import kotlin.test.*
fun main() { 
   //sampleStart 
   val (a, b) = Pair(1, "x")
println(a) // 1
println(b) // x 
   //sampleEnd
}

Parameters

type of the first value.

type of the second value.

Constructors

Pair

fun <out A, out B> Pair(first: A, second: B)

Creates a new instance of Pair.

Functions

toString

open override fun toString(): String

Returns string representation of the Pair including its first and second values.

Properties

first

val first: A

First value.

second

val second: B

Second value.

Extensions

toList

fun <T> Pair<T, T>.toList(): List<T>

Converts this pair into a list.