kotlin-stdlib/kotlin.comparisons/reverseOrder

reverseOrder

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

Returns a comparator that compares Comparable objects in reversed natural order.

Since Kotlin

1.1

Samples

import kotlin.test.*

fun main() { 
   //sampleStart 
   val list = listOf(4, null, 1, -2, 3)

val nullsFirstList = list.sortedWith(nullsFirst(reverseOrder()))
println(nullsFirstList) // [null, 4, 3, 1, -2]

val nullsLastList = list.sortedWith(nullsLast(reverseOrder()))
println(nullsLastList) // [4, 3, 1, -2, null] 
   //sampleEnd
}
fun <T : Comparable<T>> reverseOrder(): Comparator<T>(source)

Returns a comparator that compares Comparable objects in reversed natural order.

Since Kotlin

1.0

Samples

import kotlin.test.*

fun main() { 
   //sampleStart 
   val list = listOf(4, null, 1, -2, 3)

val nullsFirstList = list.sortedWith(nullsFirst(reverseOrder()))
println(nullsFirstList) // [null, 4, 3, 1, -2]

val nullsLastList = list.sortedWith(nullsLast(reverseOrder()))
println(nullsLastList) // [4, 3, 1, -2, null] 
   //sampleEnd
}