kotlin-stdlib/kotlin.comparisons/naturalOrder

naturalOrder

fun <T : Comparable<T>> naturalOrder(): Comparator<T>(source)

Returns a comparator that compares Comparable objects in natural order.

Since Kotlin

1.1

Samples

import kotlin.test.*

fun main() { 
   //sampleStart 
   val list = listOf("aa", "b", "bb", "a")

val lengthThenNatural = compareBy<String> { it.length }
    .then(naturalOrder())

val sorted = list.sortedWith(lengthThenNatural)

println(sorted) // [a, b, aa, bb] 
   //sampleEnd
}
fun <T : Comparable<T>> naturalOrder(): Comparator<T>(source)

Returns a comparator that compares Comparable objects in natural order.

Since Kotlin

1.0

Samples

import kotlin.test.*

fun main() { 
   //sampleStart 
   val list = listOf("aa", "b", "bb", "a")

val lengthThenNatural = compareBy<String> { it.length }
    .then(naturalOrder())

val sorted = list.sortedWith(lengthThenNatural)

println(sorted) // [a, b, aa, bb] 
   //sampleEnd
}