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Document that sorting is stable in each platform

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#KT-12473 Fixed
This commit is contained in:
Ilya Gorbunov
2019-01-16 02:50:34 +03:00
parent 56672c2564
commit 0ac85ad715
10 changed files with 134 additions and 0 deletions
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libraries/stdlib/common/src/generated/_Arrays.kt
+26
View File
@@ -5040,6 +5040,8 @@ public fun CharArray.reversedArray(): CharArray {
/**
* Sorts elements in the array in-place according to natural sort order of the value returned by specified [selector] function.
*
* The sort is _stable_. It means that equal elements preserve their order relative to each other after sorting.
*/
public inline fun <T, R : Comparable<R>> Array<out T>.sortBy(crossinline selector: (T) -> R?): Unit {
if (size > 1) sortWith(compareBy(selector))
@@ -5047,6 +5049,8 @@ public inline fun <T, R : Comparable<R>> Array<out T>.sortBy(crossinline selecto
/**
* Sorts elements in the array in-place descending according to natural sort order of the value returned by specified [selector] function.
*
* The sort is _stable_. It means that equal elements preserve their order relative to each other after sorting.
*/
public inline fun <T, R : Comparable<R>> Array<out T>.sortByDescending(crossinline selector: (T) -> R?): Unit {
if (size > 1) sortWith(compareByDescending(selector))
@@ -5054,6 +5058,8 @@ public inline fun <T, R : Comparable<R>> Array<out T>.sortByDescending(crossinli
/**
* Sorts elements in the array in-place descending according to their natural sort order.
*
* The sort is _stable_. It means that equal elements preserve their order relative to each other after sorting.
*/
public fun <T : Comparable<T>> Array<out T>.sortDescending(): Unit {
sortWith(reverseOrder())
@@ -5131,6 +5137,8 @@ public fun CharArray.sortDescending(): Unit {
/**
* Returns a list of all elements sorted according to their natural sort order.
*
* The sort is _stable_. It means that equal elements preserve their order relative to each other after sorting.
*/
public fun <T : Comparable<T>> Array<out T>.sorted(): List<T> {
return sortedArray().asList()
@@ -5187,6 +5195,8 @@ public fun CharArray.sorted(): List<Char> {
/**
* Returns an array with all elements of this array sorted according to their natural sort order.
*
* The sort is _stable_. It means that equal elements preserve their order relative to each other after sorting.
*/
public fun <T : Comparable<T>> Array<T>.sortedArray(): Array<T> {
if (isEmpty()) return this
@@ -5251,6 +5261,8 @@ public fun CharArray.sortedArray(): CharArray {
/**
* Returns an array with all elements of this array sorted descending according to their natural sort order.
*
* The sort is _stable_. It means that equal elements preserve their order relative to each other after sorting.
*/
public fun <T : Comparable<T>> Array<T>.sortedArrayDescending(): Array<T> {
if (isEmpty()) return this
@@ -5315,6 +5327,8 @@ public fun CharArray.sortedArrayDescending(): CharArray {
/**
* Returns an array with all elements of this array sorted according the specified [comparator].
*
* The sort is _stable_. It means that equal elements preserve their order relative to each other after sorting.
*/
public fun <T> Array<out T>.sortedArrayWith(comparator: Comparator<in T>): Array<out T> {
if (isEmpty()) return this
@@ -5323,6 +5337,8 @@ public fun <T> Array<out T>.sortedArrayWith(comparator: Comparator<in T>): Array
/**
* Returns a list of all elements sorted according to natural sort order of the value returned by specified [selector] function.
*
* The sort is _stable_. It means that equal elements preserve their order relative to each other after sorting.
*/
public inline fun <T, R : Comparable<R>> Array<out T>.sortedBy(crossinline selector: (T) -> R?): List<T> {
return sortedWith(compareBy(selector))
@@ -5386,6 +5402,8 @@ public inline fun <R : Comparable<R>> CharArray.sortedBy(crossinline selector: (
/**
* Returns a list of all elements sorted descending according to natural sort order of the value returned by specified [selector] function.
*
* The sort is _stable_. It means that equal elements preserve their order relative to each other after sorting.
*/
public inline fun <T, R : Comparable<R>> Array<out T>.sortedByDescending(crossinline selector: (T) -> R?): List<T> {
return sortedWith(compareByDescending(selector))
@@ -5449,6 +5467,8 @@ public inline fun <R : Comparable<R>> CharArray.sortedByDescending(crossinline s
/**
* Returns a list of all elements sorted descending according to their natural sort order.
*
* The sort is _stable_. It means that equal elements preserve their order relative to each other after sorting.
*/
public fun <T : Comparable<T>> Array<out T>.sortedDescending(): List<T> {
return sortedWith(reverseOrder())
@@ -5505,6 +5525,8 @@ public fun CharArray.sortedDescending(): List<Char> {
/**
* Returns a list of all elements sorted according to the specified [comparator].
*
* The sort is _stable_. It means that equal elements preserve their order relative to each other after sorting.
*/
public fun <T> Array<out T>.sortedWith(comparator: Comparator<in T>): List<T> {
return sortedArrayWith(comparator).asList()
@@ -6702,11 +6724,15 @@ public expect fun CharArray.sort(): Unit
/**
* Sorts the array in-place according to the natural order of its elements.
*
* The sort is _stable_. It means that equal elements preserve their order relative to each other after sorting.
*/
public expect fun <T : Comparable<T>> Array<out T>.sort(): Unit
/**
* Sorts the array in-place according to the order specified by the given [comparator].
*
* The sort is _stable_. It means that equal elements preserve their order relative to each other after sorting.
*/
public expect fun <T> Array<out T>.sortWith(comparator: Comparator<in T>): Unit
libraries/stdlib/common/src/generated/_Collections.kt
+16
View File
@@ -861,6 +861,8 @@ public fun <T> Iterable<T>.reversed(): List<T> {
/**
* Sorts elements in the list in-place according to natural sort order of the value returned by specified [selector] function.
*
* The sort is _stable_. It means that equal elements preserve their order relative to each other after sorting.
*/
public inline fun <T, R : Comparable<R>> MutableList<T>.sortBy(crossinline selector: (T) -> R?): Unit {
if (size > 1) sortWith(compareBy(selector))
@@ -868,6 +870,8 @@ public inline fun <T, R : Comparable<R>> MutableList<T>.sortBy(crossinline selec
/**
* Sorts elements in the list in-place descending according to natural sort order of the value returned by specified [selector] function.
*
* The sort is _stable_. It means that equal elements preserve their order relative to each other after sorting.
*/
public inline fun <T, R : Comparable<R>> MutableList<T>.sortByDescending(crossinline selector: (T) -> R?): Unit {
if (size > 1) sortWith(compareByDescending(selector))
@@ -875,6 +879,8 @@ public inline fun <T, R : Comparable<R>> MutableList<T>.sortByDescending(crossin
/**
* Sorts elements in the list in-place descending according to their natural sort order.
*
* The sort is _stable_. It means that equal elements preserve their order relative to each other after sorting.
*/
public fun <T : Comparable<T>> MutableList<T>.sortDescending(): Unit {
sortWith(reverseOrder())
@@ -882,6 +888,8 @@ public fun <T : Comparable<T>> MutableList<T>.sortDescending(): Unit {
/**
* Returns a list of all elements sorted according to their natural sort order.
*
* The sort is _stable_. It means that equal elements preserve their order relative to each other after sorting.
*/
public fun <T : Comparable<T>> Iterable<T>.sorted(): List<T> {
if (this is Collection) {
@@ -894,6 +902,8 @@ public fun <T : Comparable<T>> Iterable<T>.sorted(): List<T> {
/**
* Returns a list of all elements sorted according to natural sort order of the value returned by specified [selector] function.
*
* The sort is _stable_. It means that equal elements preserve their order relative to each other after sorting.
*/
public inline fun <T, R : Comparable<R>> Iterable<T>.sortedBy(crossinline selector: (T) -> R?): List<T> {
return sortedWith(compareBy(selector))
@@ -901,6 +911,8 @@ public inline fun <T, R : Comparable<R>> Iterable<T>.sortedBy(crossinline select
/**
* Returns a list of all elements sorted descending according to natural sort order of the value returned by specified [selector] function.
*
* The sort is _stable_. It means that equal elements preserve their order relative to each other after sorting.
*/
public inline fun <T, R : Comparable<R>> Iterable<T>.sortedByDescending(crossinline selector: (T) -> R?): List<T> {
return sortedWith(compareByDescending(selector))
@@ -908,6 +920,8 @@ public inline fun <T, R : Comparable<R>> Iterable<T>.sortedByDescending(crossinl
/**
* Returns a list of all elements sorted descending according to their natural sort order.
*
* The sort is _stable_. It means that equal elements preserve their order relative to each other after sorting.
*/
public fun <T : Comparable<T>> Iterable<T>.sortedDescending(): List<T> {
return sortedWith(reverseOrder())
@@ -915,6 +929,8 @@ public fun <T : Comparable<T>> Iterable<T>.sortedDescending(): List<T> {
/**
* Returns a list of all elements sorted according to the specified [comparator].
*
* The sort is _stable_. It means that equal elements preserve their order relative to each other after sorting.
*/
public fun <T> Iterable<T>.sortedWith(comparator: Comparator<in T>): List<T> {
if (this is Collection) {
libraries/stdlib/common/src/generated/_Sequences.kt
+10
View File
@@ -502,6 +502,8 @@ public fun <T> Sequence<T>.takeWhile(predicate: (T) -> Boolean): Sequence<T> {
/**
* Returns a sequence that yields elements of this sequence sorted according to their natural sort order.
*
* The sort is _stable_. It means that equal elements preserve their order relative to each other after sorting.
*
* The operation is _intermediate_ and _stateful_.
*/
@@ -517,6 +519,8 @@ public fun <T : Comparable<T>> Sequence<T>.sorted(): Sequence<T> {
/**
* Returns a sequence that yields elements of this sequence sorted according to natural sort order of the value returned by specified [selector] function.
*
* The sort is _stable_. It means that equal elements preserve their order relative to each other after sorting.
*
* The operation is _intermediate_ and _stateful_.
*/
@@ -526,6 +530,8 @@ public inline fun <T, R : Comparable<R>> Sequence<T>.sortedBy(crossinline select
/**
* Returns a sequence that yields elements of this sequence sorted descending according to natural sort order of the value returned by specified [selector] function.
*
* The sort is _stable_. It means that equal elements preserve their order relative to each other after sorting.
*
* The operation is _intermediate_ and _stateful_.
*/
@@ -535,6 +541,8 @@ public inline fun <T, R : Comparable<R>> Sequence<T>.sortedByDescending(crossinl
/**
* Returns a sequence that yields elements of this sequence sorted descending according to their natural sort order.
*
* The sort is _stable_. It means that equal elements preserve their order relative to each other after sorting.
*
* The operation is _intermediate_ and _stateful_.
*/
@@ -544,6 +552,8 @@ public fun <T : Comparable<T>> Sequence<T>.sortedDescending(): Sequence<T> {
/**
* Returns a sequence that yields elements of this sequence sorted according to the specified [comparator].
*
* The sort is _stable_. It means that equal elements preserve their order relative to each other after sorting.
*
* The operation is _intermediate_ and _stateful_.
*/
libraries/stdlib/js/irRuntime/generated/_ArraysJs.kt
+6
View File
@@ -1198,6 +1198,8 @@ public actual fun CharArray.sort(): Unit {
/**
* Sorts the array in-place according to the natural order of its elements.
*
* The sort is _stable_. It means that equal elements preserve their order relative to each other after sorting.
*/
public actual fun <T : Comparable<T>> Array<out T>.sort(): Unit {
if (size > 1) sortArray(this)
@@ -1205,6 +1207,8 @@ public actual fun <T : Comparable<T>> Array<out T>.sort(): Unit {
/**
* Sorts the array in-place according to the order specified by the given [comparison] function.
*
* The sort is _stable_. It means that equal elements preserve their order relative to each other after sorting.
*/
public fun <T> Array<out T>.sort(comparison: (a: T, b: T) -> Int): Unit {
if (size > 1) sortArrayWith(this, comparison)
@@ -1268,6 +1272,8 @@ public inline fun CharArray.sort(noinline comparison: (a: Char, b: Char) -> Int)
/**
* Sorts the array in-place according to the order specified by the given [comparator].
*
* The sort is _stable_. It means that equal elements preserve their order relative to each other after sorting.
*/
public actual fun <T> Array<out T>.sortWith(comparator: Comparator<in T>): Unit {
if (size > 1) sortArrayWith(this, comparator)
libraries/stdlib/js/src/generated/_ArraysJs.kt
+6
View File
@@ -1234,6 +1234,8 @@ public actual fun CharArray.sort(): Unit {
/**
* Sorts the array in-place according to the natural order of its elements.
*
* The sort is _stable_. It means that equal elements preserve their order relative to each other after sorting.
*/
public actual fun <T : Comparable<T>> Array<out T>.sort(): Unit {
if (size > 1) sortArray(this)
@@ -1241,6 +1243,8 @@ public actual fun <T : Comparable<T>> Array<out T>.sort(): Unit {
/**
* Sorts the array in-place according to the order specified by the given [comparison] function.
*
* The sort is _stable_. It means that equal elements preserve their order relative to each other after sorting.
*/
public fun <T> Array<out T>.sort(comparison: (a: T, b: T) -> Int): Unit {
if (size > 1) sortArrayWith(this, comparison)
@@ -1304,6 +1308,8 @@ public inline fun CharArray.sort(noinline comparison: (a: Char, b: Char) -> Int)
/**
* Sorts the array in-place according to the order specified by the given [comparator].
*
* The sort is _stable_. It means that equal elements preserve their order relative to each other after sorting.
*/
public actual fun <T> Array<out T>.sortWith(comparator: Comparator<in T>): Unit {
if (size > 1) sortArrayWith(this, comparator)
libraries/stdlib/js/src/kotlin/collections.kt
+4
View File
@@ -93,6 +93,8 @@ public actual fun <T> Iterable<T>.shuffled(): List<T> = toMutableList().apply {
/**
* Sorts elements in the list in-place according to their natural sort order.
*
* The sort is _stable_. It means that equal elements preserve their order relative to each other after sorting.
*/
public actual fun <T : Comparable<T>> MutableList<T>.sort(): Unit {
collectionsSort(this, naturalOrder())
@@ -100,6 +102,8 @@ public actual fun <T : Comparable<T>> MutableList<T>.sort(): Unit {
/**
* Sorts elements in the list in-place according to the order specified with [comparator].
*
* The sort is _stable_. It means that equal elements preserve their order relative to each other after sorting.
*/
public actual fun <T> MutableList<T>.sortWith(comparator: Comparator<in T>): Unit {
collectionsSort(this, comparator)
libraries/stdlib/jvm/src/generated/_ArraysJvm.kt
+10
View File
@@ -1685,6 +1685,8 @@ public actual fun CharArray.sort(): Unit {
/**
* Sorts the array in-place according to the natural order of its elements.
*
* The sort is _stable_. It means that equal elements preserve their order relative to each other after sorting.
*/
@kotlin.internal.InlineOnly
public actual inline fun <T : Comparable<T>> Array<out T>.sort(): Unit {
@@ -1695,6 +1697,8 @@ public actual inline fun <T : Comparable<T>> Array<out T>.sort(): Unit {
/**
* Sorts the array in-place according to the natural order of its elements.
*
* The sort is _stable_. It means that equal elements preserve their order relative to each other after sorting.
*
* @throws ClassCastException if any element of the array is not [Comparable].
*/
public fun <T> Array<out T>.sort(): Unit {
@@ -1703,6 +1707,8 @@ public fun <T> Array<out T>.sort(): Unit {
/**
* Sorts a range in the array in-place.
*
* The sort is _stable_. It means that equal elements preserve their order relative to each other after sorting.
*/
public fun <T> Array<out T>.sort(fromIndex: Int = 0, toIndex: Int = size): Unit {
java.util.Arrays.sort(this, fromIndex, toIndex)
@@ -1759,6 +1765,8 @@ public fun CharArray.sort(fromIndex: Int = 0, toIndex: Int = size): Unit {
/**
* Sorts the array in-place according to the order specified by the given [comparator].
*
* The sort is _stable_. It means that equal elements preserve their order relative to each other after sorting.
*/
public actual fun <T> Array<out T>.sortWith(comparator: Comparator<in T>): Unit {
if (size > 1) java.util.Arrays.sort(this, comparator)
@@ -1766,6 +1774,8 @@ public actual fun <T> Array<out T>.sortWith(comparator: Comparator<in T>): Unit
/**
* Sorts a range in the array in-place with the given [comparator].
*
* The sort is _stable_. It means that equal elements preserve their order relative to each other after sorting.
*/
public fun <T> Array<out T>.sortWith(comparator: Comparator<in T>, fromIndex: Int = 0, toIndex: Int = size): Unit {
java.util.Arrays.sort(this, fromIndex, toIndex, comparator)
libraries/stdlib/jvm/src/kotlin/collections/MutableCollectionsJVM.kt
+4
View File
@@ -22,6 +22,8 @@ public inline fun <T> MutableList<T>.sort(comparison: (T, T) -> Int): Unit = thr
/**
* Sorts elements in the list in-place according to their natural sort order.
*
* The sort is _stable_. It means that equal elements preserve their order relative to each other after sorting.
*/
public actual fun <T : Comparable<T>> MutableList<T>.sort(): Unit {
if (size > 1) java.util.Collections.sort(this)
@@ -29,6 +31,8 @@ public actual fun <T : Comparable<T>> MutableList<T>.sort(): Unit {
/**
* Sorts elements in the list in-place according to the order specified with [comparator].
*
* The sort is _stable_. It means that equal elements preserve their order relative to each other after sorting.
*/
public actual fun <T> MutableList<T>.sortWith(comparator: Comparator<in T>): Unit {
if (size > 1) java.util.Collections.sort(this, comparator)
libraries/tools/kotlin-stdlib-gen/src/templates/Arrays.kt
+11
View File
@@ -6,6 +6,8 @@
package templates
import templates.Family.*
import templates.Ordering.stableSortNote
import templates.Ordering.appendStableSortNote
object ArrayOps : TemplateGroupBase() {
@@ -884,6 +886,7 @@ object ArrayOps : TemplateGroupBase() {
} builder {
typeParam("T : Comparable<T>")
doc { "Sorts the array in-place according to the natural order of its elements." }
appendStableSortNote()
specialFor(ArraysOfPrimitives) {
doc { "Sorts the array in-place." }
}
@@ -939,6 +942,7 @@ object ArrayOps : TemplateGroupBase() {
include(ArraysOfObjects)
} builder {
doc { "Sorts the array in-place according to the order specified by the given [comparator]." }
appendStableSortNote()
returns("Unit")
on(Platform.JVM) {
body {
@@ -968,6 +972,7 @@ object ArrayOps : TemplateGroupBase() {
body { "asDynamic().sort(comparison)" }
}
specialFor(ArraysOfObjects) {
appendStableSortNote()
body { """if (size > 1) sortArrayWith(this, comparison)""" }
}
}
@@ -981,6 +986,8 @@ object ArrayOps : TemplateGroupBase() {
"""
Sorts the array in-place according to the natural order of its elements.
$stableSortNote
@throws ClassCastException if any element of the array is not [Comparable].
"""
}
@@ -996,6 +1003,9 @@ object ArrayOps : TemplateGroupBase() {
exclude(PrimitiveType.Boolean)
} builder {
doc { "Sorts a range in the array in-place." }
specialFor(ArraysOfObjects) {
appendStableSortNote()
}
returns("Unit")
body {
"java.util.Arrays.sort(this, fromIndex, toIndex)"
@@ -1007,6 +1017,7 @@ object ArrayOps : TemplateGroupBase() {
include(ArraysOfObjects)
} builder {
doc { "Sorts a range in the array in-place with the given [comparator]." }
appendStableSortNote()
returns("Unit")
body {
"java.util.Arrays.sort(this, fromIndex, toIndex, comparator)"
libraries/tools/kotlin-stdlib-gen/src/templates/Ordering.kt
+41
View File
@@ -96,6 +96,15 @@ object Ordering : TemplateGroupBase() {
}
}
val stableSortNote =
"The sort is _stable_. It means that equal elements preserve their order relative to each other after sorting."
fun MemberBuilder.appendStableSortNote() {
doc {
doc.orEmpty().trimIndent() + "\n\n" + stableSortNote
}
}
val f_sorted = fn("sorted()") {
includeDefault()
exclude(PrimitiveType.Boolean)
@@ -106,6 +115,9 @@ object Ordering : TemplateGroupBase() {
Returns a list of all elements sorted according to their natural sort order.
"""
}
if (f != ArraysOfPrimitives) {
appendStableSortNote()
}
returns("List<T>")
typeParam("T : Comparable<T>")
body {
@@ -134,6 +146,7 @@ object Ordering : TemplateGroupBase() {
doc {
"Returns a sequence that yields elements of this sequence sorted according to their natural sort order."
}
appendStableSortNote()
sequenceClassification(intermediate, stateful)
}
body(Sequences) {
@@ -156,6 +169,9 @@ object Ordering : TemplateGroupBase() {
doc {
"Returns an array with all elements of this array sorted according to their natural sort order."
}
specialFor(InvariantArraysOfObjects) {
appendStableSortNote()
}
typeParam("T : Comparable<T>")
returns("SELF")
body {
@@ -171,6 +187,9 @@ object Ordering : TemplateGroupBase() {
exclude(PrimitiveType.Boolean)
} builder {
doc { """Sorts elements in the ${f.collection} in-place descending according to their natural sort order.""" }
if (f != ArraysOfPrimitives) {
appendStableSortNote()
}
returns("Unit")
typeParam("T : Comparable<T>")
specialFor(Lists) {
@@ -198,6 +217,9 @@ object Ordering : TemplateGroupBase() {
Returns a list of all elements sorted descending according to their natural sort order.
"""
}
if (f != ArraysOfPrimitives) {
appendStableSortNote()
}
returns("List<T>")
typeParam("T : Comparable<T>")
body {
@@ -216,6 +238,7 @@ object Ordering : TemplateGroupBase() {
doc {
"Returns a sequence that yields elements of this sequence sorted descending according to their natural sort order."
}
appendStableSortNote()
sequenceClassification(intermediate, stateful)
}
}
@@ -227,6 +250,9 @@ object Ordering : TemplateGroupBase() {
doc {
"Returns an array with all elements of this array sorted descending according to their natural sort order."
}
specialFor(InvariantArraysOfObjects) {
appendStableSortNote()
}
typeParam("T : Comparable<T>")
returns("SELF")
body(InvariantArraysOfObjects) {
@@ -252,6 +278,9 @@ object Ordering : TemplateGroupBase() {
Returns a list of all elements sorted according to the specified [comparator].
"""
}
if (f != ArraysOfPrimitives) {
appendStableSortNote()
}
body {
"""
if (this is Collection) {
@@ -278,6 +307,7 @@ object Ordering : TemplateGroupBase() {
doc {
"Returns a sequence that yields elements of this sequence sorted according to the specified [comparator]."
}
appendStableSortNote()
sequenceClassification(intermediate, stateful)
}
body(Sequences) {
@@ -299,6 +329,7 @@ object Ordering : TemplateGroupBase() {
doc {
"Returns an array with all elements of this array sorted according the specified [comparator]."
}
appendStableSortNote()
returns("SELF")
body {
"""
@@ -313,6 +344,7 @@ object Ordering : TemplateGroupBase() {
} builder {
inline()
doc { """Sorts elements in the ${f.collection} in-place according to natural sort order of the value returned by specified [selector] function.""" }
appendStableSortNote()
returns("Unit")
typeParam("R : Comparable<R>")
specialFor(Lists) { receiver("MutableList<T>") }
@@ -332,12 +364,16 @@ object Ordering : TemplateGroupBase() {
Returns a list of all elements sorted according to natural sort order of the value returned by specified [selector] function.
"""
}
if (f != ArraysOfPrimitives) {
appendStableSortNote()
}
specialFor(Sequences) {
returns("SELF")
doc {
"Returns a sequence that yields elements of this sequence sorted according to natural sort order of the value returned by specified [selector] function."
}
appendStableSortNote()
sequenceClassification(intermediate, stateful)
}
body {
@@ -350,6 +386,7 @@ object Ordering : TemplateGroupBase() {
} builder {
inline()
doc { """Sorts elements in the ${f.collection} in-place descending according to natural sort order of the value returned by specified [selector] function.""" }
appendStableSortNote()
returns("Unit")
typeParam("R : Comparable<R>")
specialFor(Lists) { receiver("MutableList<T>") }
@@ -370,12 +407,16 @@ object Ordering : TemplateGroupBase() {
Returns a list of all elements sorted descending according to natural sort order of the value returned by specified [selector] function.
"""
}
if (f != ArraysOfPrimitives) {
appendStableSortNote()
}
specialFor(Sequences) {
returns("SELF")
doc {
"Returns a sequence that yields elements of this sequence sorted descending according to natural sort order of the value returned by specified [selector] function."
}
appendStableSortNote()
sequenceClassification(intermediate, stateful)
}