kotlin-stdlib/kotlin.comparisons/thenDescending

thenDescending

infix fun <T> Comparator<T>.thenDescending(comparator: Comparator<in T>): Comparator<T>(source)

Combines this comparator and the given comparator such that the latter is applied only when the former considered values equal.

Since Kotlin

1.0

Samples

import kotlin.test.*

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

val lengthThenCaseInsensitive = compareBy<String> { it.length }
    .thenDescending(String.CASE_INSENSITIVE_ORDER)

val sorted = list.sortedWith(lengthThenCaseInsensitive)

println(sorted) // [b, A, a, bb, aa] 
   //sampleEnd
}
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val list = listOf("A", "aa", "b", "bb", "a")
val lengthThenCaseInsensitive = compareBy<String> { it.length }
    .thenDescending(String.CASE_INSENSITIVE_ORDER)
val sorted = list.sortedWith(lengthThenCaseInsensitive)
println(sorted) // [b, A, a, bb, aa] 
Open in Playground →
Target: JVMRunning on v.2.1.20

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