Investigate kotlin's Array class about underscore-java HOT 2 CLOSED

size
Returns the number of elements in the array.

val size: Int
Functions
Common
JVM
JS
Native
get
Returns the array element at the specified index. This method can be called using the index operator:

operator fun get(index: Int): T
Common
JVM
JS
Native
iterator
Creates an iterator for iterating over the elements of the array.

operator fun iterator(): Iterator<T>
Common
JVM
JS
Native
set
Sets the array element at the specified index to the specified value. This method can be called using the index operator:

operator fun set(index: Int, value: T)
Extension Properties
Common
JVM
JS
Native
indices
Returns the range of valid indices for the array.

val <T> Array<out T>.indices: IntRange
Common
JVM
JS
Native
lastIndex
Returns the last valid index for the array.

val <T> Array<out T>.lastIndex: Int
Extension Functions
Common
JVM
JS
Native
all
Returns true if all elements match the given predicate.

fun <T> Array<out T>.all(predicate: (T) -> Boolean): Boolean
Common
JVM
JS
Native
any
Returns true if array has at least one element.

fun <T> Array<out T>.any(): Boolean
Returns true if at least one element matches the given predicate.

fun <T> Array<out T>.any(predicate: (T) -> Boolean): Boolean
Common
JVM
JS
Native
asIterable
Creates an Iterable instance that wraps the original array returning its elements when being iterated.

fun <T> Array<out T>.asIterable(): Iterable<T>
Common
JVM
JS
Native
asSequence
Creates a Sequence instance that wraps the original array returning its elements when being iterated.

fun <T> Array<out T>.asSequence(): Sequence<T>
Common
JVM
JS
Native
associate
Returns a Map containing key-value pairs provided by transform function applied to elements of the given array.

fun <T, K, V> Array<out T>.associate(
    transform: (T) -> Pair<K, V>
): Map<K, V>
Common
JVM
JS
Native
associateBy
Returns a Map containing the elements from the given array indexed by the key returned from keySelector function applied to each element.

fun <T, K> Array<out T>.associateBy(
    keySelector: (T) -> K
): Map<K, T>
Returns a Map containing the values provided by valueTransform and indexed by keySelector functions applied to elements of the given array.

fun <T, K, V> Array<out T>.associateBy(
    keySelector: (T) -> K, 
    valueTransform: (T) -> V
): Map<K, V>
Common
JVM
JS
Native
associateByTo
Populates and returns the destination mutable map with key-value pairs, where key is provided by the keySelector function applied to each element of the given array and value is the element itself.

fun <T, K, M : MutableMap<in K, in T>> Array<out T>.associateByTo(
    destination: M, 
    keySelector: (T) -> K
): M
Populates and returns the destination mutable map with key-value pairs, where key is provided by the keySelector function and and value is provided by the valueTransform function applied to elements of the given array.

fun <T, K, V, M : MutableMap<in K, in V>> Array<out T>.associateByTo(
    destination: M, 
    keySelector: (T) -> K, 
    valueTransform: (T) -> V
): M
Common
JVM
JS
Native
associateTo
Populates and returns the destination mutable map with key-value pairs provided by transform function applied to each element of the given array.

fun <T, K, V, M : MutableMap<in K, in V>> Array<out T>.associateTo(
    destination: M, 
    transform: (T) -> Pair<K, V>
): M
Common
JVM
JS
Native
average
Returns an average value of elements in the array.

fun Array<out Byte>.average(): Double
fun Array<out Short>.average(): Double
fun Array<out Int>.average(): Double
fun Array<out Long>.average(): Double
fun Array<out Float>.average(): Double
fun Array<out Double>.average(): Double
JVM
binarySearch
Searches the array or the range of the array for the provided element using the binary search algorithm. The array is expected to be sorted according to the specified comparator, otherwise the result is undefined.

fun <T> Array<out T>.binarySearch(
    element: T, 
    comparator: Comparator<in T>, 
    fromIndex: Int = 0, 
    toIndex: Int = size
): Int
Searches the array or the range of the array for the provided element using the binary search algorithm. The array is expected to be sorted, otherwise the result is undefined.

fun <T> Array<out T>.binarySearch(
    element: T, 
    fromIndex: Int = 0, 
    toIndex: Int = size
): Int
Common
JVM
JS
Native
component1
Returns 1st element from the collection.

operator fun <T> Array<out T>.component1(): T
Common
JVM
JS
Native
component2
Returns 2nd element from the collection.

operator fun <T> Array<out T>.component2(): T
Common
JVM
JS
Native
component3
Returns 3rd element from the collection.

operator fun <T> Array<out T>.component3(): T
Common
JVM
JS
Native
component4
Returns 4th element from the collection.

operator fun <T> Array<out T>.component4(): T
Common
JVM
JS
Native
component5
Returns 5th element from the collection.

operator fun <T> Array<out T>.component5(): T
Common
JVM
JS
Native
contains
Returns true if element is found in the array.

operator fun <T> Array<out T>.contains(element: T): Boolean
Common
JVM
JS
Native
count
Returns the number of elements in this array.

fun <T> Array<out T>.count(): Int
Returns the number of elements matching the given predicate.

fun <T> Array<out T>.count(predicate: (T) -> Boolean): Int
Common
JVM
JS
Native
distinct
Returns a list containing only distinct elements from the given array.

fun <T> Array<out T>.distinct(): List<T>
Common
JVM
JS
Native
distinctBy
Returns a list containing only elements from the given array having distinct keys returned by the given selector function.

fun <T, K> Array<out T>.distinctBy(
    selector: (T) -> K
): List<T>
Common
JVM
JS
Native
drop
Returns a list containing all elements except first n elements.

fun <T> Array<out T>.drop(n: Int): List<T>
Common
JVM
JS
Native
dropLast
Returns a list containing all elements except last n elements.

fun <T> Array<out T>.dropLast(n: Int): List<T>
Common
JVM
JS
Native
dropLastWhile
Returns a list containing all elements except last elements that satisfy the given predicate.

fun <T> Array<out T>.dropLastWhile(
    predicate: (T) -> Boolean
): List<T>
Common
JVM
JS
Native
dropWhile
Returns a list containing all elements except first elements that satisfy the given predicate.

fun <T> Array<out T>.dropWhile(
    predicate: (T) -> Boolean
): List<T>
Common
JVM
JS
Native
elementAt
Returns an element at the given index or throws an IndexOutOfBoundsException if the index is out of bounds of this array.

fun <T> Array<out T>.elementAt(index: Int): T
Common
JVM
JS
Native
elementAtOrElse
Returns an element at the given index or the result of calling the defaultValue function if the index is out of bounds of this array.

fun <T> Array<out T>.elementAtOrElse(
    index: Int, 
    defaultValue: (Int) -> T
): T
Common
JVM
JS
Native
elementAtOrNull
Returns an element at the given index or null if the index is out of bounds of this array.

fun <T> Array<out T>.elementAtOrNull(index: Int): T?
JVM
fill
Fills original array with the provided value.

fun <T> Array<T>.fill(
    element: T, 
    fromIndex: Int = 0, 
    toIndex: Int = size)
Common
JVM
JS
Native
filter
Returns a list containing only elements matching the given predicate.

fun <T> Array<out T>.filter(
    predicate: (T) -> Boolean
): List<T>
Common
JVM
JS
Native
filterIndexed
Returns a list containing only elements matching the given predicate.

fun <T> Array<out T>.filterIndexed(
    predicate: (index: Int, T) -> Boolean
): List<T>
Common
JVM
JS
Native
filterIndexedTo
Appends all elements matching the given predicate to the given destination.

fun <T, C : MutableCollection<in T>> Array<out T>.filterIndexedTo(
    destination: C, 
    predicate: (index: Int, T) -> Boolean
): C
filterIsInstance
Common
JVM
JS
Native
Returns a list containing all elements that are instances of specified type parameter R.

fun <R> Array<*>.filterIsInstance(): List<R>
JVM
Returns a list containing all elements that are instances of specified class.

fun <R> Array<*>.filterIsInstance(klass: Class<R>): List<R>
filterIsInstanceTo
Common
JVM
JS
Native
Appends all elements that are instances of specified type parameter R to the given destination.

fun <R, C : MutableCollection<in R>> Array<*>.filterIsInstanceTo(
    destination: C
): C
JVM
Appends all elements that are instances of specified class to the given destination.

fun <C : MutableCollection<in R>, R> Array<*>.filterIsInstanceTo(
    destination: C, 
    klass: Class<R>
): C
Common
JVM
JS
Native
filterNot
Returns a list containing all elements not matching the given predicate.

fun <T> Array<out T>.filterNot(
    predicate: (T) -> Boolean
): List<T>
Common
JVM
JS
Native
filterNotNull
Returns a list containing all elements that are not null.

fun <T : Any> Array<out T?>.filterNotNull(): List<T>
Common
JVM
JS
Native
filterNotNullTo
Appends all elements that are not null to the given destination.

fun <C : MutableCollection<in T>, T : Any> Array<out T?>.filterNotNullTo(
    destination: C
): C
Common
JVM
JS
Native
filterNotTo
Appends all elements not matching the given predicate to the given destination.

fun <T, C : MutableCollection<in T>> Array<out T>.filterNotTo(
    destination: C, 
    predicate: (T) -> Boolean
): C
Common
JVM
JS
Native
filterTo
Appends all elements matching the given predicate to the given destination.

fun <T, C : MutableCollection<in T>> Array<out T>.filterTo(
    destination: C, 
    predicate: (T) -> Boolean
): C
Common
JVM
JS
Native
find
Returns the first element matching the given predicate, or null if no such element was found.

fun <T> Array<out T>.find(predicate: (T) -> Boolean): T?
Common
JVM
JS
Native
findLast
Returns the last element matching the given predicate, or null if no such element was found.

fun <T> Array<out T>.findLast(predicate: (T) -> Boolean): T?
Common
JVM
JS
Native
first
Returns first element.

fun <T> Array<out T>.first(): T
Returns the first element matching the given predicate.

fun <T> Array<out T>.first(predicate: (T) -> Boolean): T
Common
JVM
JS
Native
firstOrNull
Returns the first element, or null if the array is empty.

fun <T> Array<out T>.firstOrNull(): T?
Returns the first element matching the given predicate, or null if element was not found.

fun <T> Array<out T>.firstOrNull(
    predicate: (T) -> Boolean
): T?
Common
JVM
JS
Native
flatMap
Returns a single list of all elements yielded from results of transform function being invoked on each element of original array.

fun <T, R> Array<out T>.flatMap(
    transform: (T) -> Iterable<R>
): List<R>
Common
JVM
JS
Native
flatMapTo
Appends all elements yielded from results of transform function being invoked on each element of original array, to the given destination.

fun <T, R, C : MutableCollection<in R>> Array<out T>.flatMapTo(
    destination: C, 
    transform: (T) -> Iterable<R>
): C
Common
JVM
JS
Native
flatten
Returns a single list of all elements from all arrays in the given array.

fun <T> Array<out Array<out T>>.flatten(): List<T>
Common
JVM
JS
Native
fold
Accumulates value starting with initial value and applying operation from left to right to current accumulator value and each element.

fun <T, R> Array<out T>.fold(
    initial: R, 
    operation: (acc: R, T) -> R
): R
Common
JVM
JS
Native
foldIndexed
Accumulates value starting with initial value and applying operation from left to right to current accumulator value and each element with its index in the original array.

fun <T, R> Array<out T>.foldIndexed(
    initial: R, 
    operation: (index: Int, acc: R, T) -> R
): R
Common
JVM
JS
Native
foldRight
Accumulates value starting with initial value and applying operation from right to left to each element and current accumulator value.

fun <T, R> Array<out T>.foldRight(
    initial: R, 
    operation: (T, acc: R) -> R
): R
Common
JVM
JS
Native
foldRightIndexed
Accumulates value starting with initial value and applying operation from right to left to each element with its index in the original array and current accumulator value.

fun <T, R> Array<out T>.foldRightIndexed(
    initial: R, 
    operation: (index: Int, T, acc: R) -> R
): R
Common
JVM
JS
Native
forEach
Performs the given action on each element.

fun <T> Array<out T>.forEach(action: (T) -> Unit)
Common
JVM
JS
Native
forEachIndexed
Performs the given action on each element, providing sequential index with the element.

fun <T> Array<out T>.forEachIndexed(
    action: (index: Int, T) -> Unit)
Common
JVM
JS
Native
getOrElse
Returns an element at the given index or the result of calling the defaultValue function if the index is out of bounds of this array.

fun <T> Array<out T>.getOrElse(
    index: Int, 
    defaultValue: (Int) -> T
): T
Common
JVM
JS
Native
getOrNull
Returns an element at the given index or null if the index is out of bounds of this array.

fun <T> Array<out T>.getOrNull(index: Int): T?
Common
JVM
JS
Native
groupBy
Groups elements of the original array by the key returned by the given keySelector function applied to each element and returns a map where each group key is associated with a list of corresponding elements.

fun <T, K> Array<out T>.groupBy(
    keySelector: (T) -> K
): Map<K, List<T>>
Groups values returned by the valueTransform function applied to each element of the original array by the key returned by the given keySelector function applied to the element and returns a map where each group key is associated with a list of corresponding values.

fun <T, K, V> Array<out T>.groupBy(
    keySelector: (T) -> K, 
    valueTransform: (T) -> V
): Map<K, List<V>>
Common
JVM
JS
Native
groupByTo
Groups elements of the original array by the key returned by the given keySelector function applied to each element and puts to the destination map each group key associated with a list of corresponding elements.

fun <T, K, M : MutableMap<in K, MutableList<T>>> Array<out T>.groupByTo(
    destination: M, 
    keySelector: (T) -> K
): M
Groups values returned by the valueTransform function applied to each element of the original array by the key returned by the given keySelector function applied to the element and puts to the destination map each group key associated with a list of corresponding values.

fun <T, K, V, M : MutableMap<in K, MutableList<V>>> Array<out T>.groupByTo(
    destination: M, 
    keySelector: (T) -> K, 
    valueTransform: (T) -> V
): M
Common
JVM
JS
Native
1.1
groupingBy
Creates a Grouping source from an array to be used later with one of group-and-fold operations using the specified keySelector function to extract a key from each element.

fun <T, K> Array<out T>.groupingBy(
    keySelector: (T) -> K
): Grouping<T, K>
Common
JVM
JS
Native
indexOf
Returns first index of element, or -1 if the array does not contain element.

fun <T> Array<out T>.indexOf(element: T): Int
Common
JVM
JS
Native
indexOfFirst
Returns index of the first element matching the given predicate, or -1 if the array does not contain such element.

fun <T> Array<out T>.indexOfFirst(
    predicate: (T) -> Boolean
): Int
Common
JVM
JS
Native
indexOfLast
Returns index of the last element matching the given predicate, or -1 if the array does not contain such element.

fun <T> Array<out T>.indexOfLast(
    predicate: (T) -> Boolean
): Int
Common
JVM
JS
Native
intersect
Returns a set containing all elements that are contained by both this set and the specified collection.

infix fun <T> Array<out T>.intersect(
    other: Iterable<T>
): Set<T>
JVM
isArrayOf
Checks if array can contain element of type T.

fun <T : Any> Array<*>.isArrayOf(): Boolean
Common
JVM
JS
Native
isEmpty
Returns true if the array is empty.

fun <T> Array<out T>.isEmpty(): Boolean
Common
JVM
JS
Native
isNotEmpty
Returns true if the array is not empty.

fun <T> Array<out T>.isNotEmpty(): Boolean
Common
JVM
JS
Native
1.3
isNullOrEmpty
Returns true if this nullable array is either null or empty.

fun Array<*>?.isNullOrEmpty(): Boolean
Common
JVM
JS
Native
joinTo
Appends the string from all the elements separated using separator and using the given prefix and postfix if supplied.

fun <T, A : Appendable> Array<out T>.joinTo(
    buffer: A, 
    separator: CharSequence = ", ", 
    prefix: CharSequence = "", 
    postfix: CharSequence = "", 
    limit: Int = -1, 
    truncated: CharSequence = "...", 
    transform: (T) -> CharSequence = null
): A
Common
JVM
JS
Native
joinToString
Creates a string from all the elements separated using separator and using the given prefix and postfix if supplied.

fun <T> Array<out T>.joinToString(
    separator: CharSequence = ", ", 
    prefix: CharSequence = "", 
    postfix: CharSequence = "", 
    limit: Int = -1, 
    truncated: CharSequence = "...", 
    transform: (T) -> CharSequence = null
): String
Common
JVM
JS
Native
last
Returns the last element.

fun <T> Array<out T>.last(): T
Returns the last element matching the given predicate.

fun <T> Array<out T>.last(predicate: (T) -> Boolean): T
Common
JVM
JS
Native
lastIndexOf
Returns last index of element, or -1 if the array does not contain element.

fun <T> Array<out T>.lastIndexOf(element: T): Int
Common
JVM
JS
Native
lastOrNull
Returns the last element, or null if the array is empty.

fun <T> Array<out T>.lastOrNull(): T?
Returns the last element matching the given predicate, or null if no such element was found.

fun <T> Array<out T>.lastOrNull(
    predicate: (T) -> Boolean
): T?
Common
JVM
JS
Native
map
Returns a list containing the results of applying the given transform function to each element in the original array.

fun <T, R> Array<out T>.map(transform: (T) -> R): List<R>
Common
JVM
JS
Native
mapIndexed
Returns a list containing the results of applying the given transform function to each element and its index in the original array.

fun <T, R> Array<out T>.mapIndexed(
    transform: (index: Int, T) -> R
): List<R>
Common
JVM
JS
Native
mapIndexedNotNull
Returns a list containing only the non-null results of applying the given transform function to each element and its index in the original array.

fun <T, R : Any> Array<out T>.mapIndexedNotNull(
    transform: (index: Int, T) -> R?
): List<R>
Common
JVM
JS
Native
mapIndexedNotNullTo
Applies the given transform function to each element and its index in the original array and appends only the non-null results to the given destination.

fun <T, R : Any, C : MutableCollection<in R>> Array<out T>.mapIndexedNotNullTo(
    destination: C, 
    transform: (index: Int, T) -> R?
): C
Common
JVM
JS
Native
mapIndexedTo
Applies the given transform function to each element and its index in the original array and appends the results to the given destination.

fun <T, R, C : MutableCollection<in R>> Array<out T>.mapIndexedTo(
    destination: C, 
    transform: (index: Int, T) -> R
): C
Common
JVM
JS
Native
mapNotNull
Returns a list containing only the non-null results of applying the given transform function to each element in the original array.

fun <T, R : Any> Array<out T>.mapNotNull(
    transform: (T) -> R?
): List<R>
Common
JVM
JS
Native
mapNotNullTo
Applies the given transform function to each element in the original array and appends only the non-null results to the given destination.

fun <T, R : Any, C : MutableCollection<in R>> Array<out T>.mapNotNullTo(
    destination: C, 
    transform: (T) -> R?
): C
Common
JVM
JS
Native
mapTo
Applies the given transform function to each element of the original array and appends the results to the given destination.

fun <T, R, C : MutableCollection<in R>> Array<out T>.mapTo(
    destination: C, 
    transform: (T) -> R
): C
Common
JVM
JS
Native
max
Returns the largest element or null if there are no elements.

fun <T : Comparable<T>> any_array<T>.max(): T?
Common
JVM
JS
Native
maxBy
Returns the first element yielding the largest value of the given function or null if there are no elements.

fun <T, R : Comparable<R>> Array<out T>.maxBy(
    selector: (T) -> R
): T?
Common
JVM
JS
Native
maxWith
Returns the first element having the largest value according to the provided comparator or null if there are no elements.

fun <T> Array<out T>.maxWith(
    comparator: Comparator<in T>
): T?
Common
JVM
JS
Native
min
Returns the smallest element or null if there are no elements.

fun <T : Comparable<T>> any_array<T>.min(): T?
Common
JVM
JS
Native
minBy
Returns the first element yielding the smallest value of the given function or null if there are no elements.

fun <T, R : Comparable<R>> Array<out T>.minBy(
    selector: (T) -> R
): T?
Common
JVM
JS
Native
minWith
Returns the first element having the smallest value according to the provided comparator or null if there are no elements.

fun <T> Array<out T>.minWith(
    comparator: Comparator<in T>
): T?
Common
JVM
JS
Native
none
Returns true if the array has no elements.

fun <T> Array<out T>.none(): Boolean
Returns true if no elements match the given predicate.

fun <T> Array<out T>.none(predicate: (T) -> Boolean): Boolean
Common
JVM
JS
Native
partition
Splits the original array into pair of lists, where first list contains elements for which predicate yielded true, while second list contains elements for which predicate yielded false.

fun <T> Array<out T>.partition(
    predicate: (T) -> Boolean
): Pair<List<T>, List<T>>
Native
1.3
plus
Returns an array containing all elements of the original array and then all elements of the given elements array.

operator fun <T> Array<T>.plus(elements: Array<T>): Array<T>
Common
JVM
JS
Native
1.3
random
Returns a random element from this array.

fun <T> Array<out T>.random(): T
Returns a random element from this array using the specified source of randomness.

fun <T> Array<out T>.random(random: Random): T
Common
JVM
JS
Native
reduce
Accumulates value starting with the first element and applying operation from left to right to current accumulator value and each element.

fun <S, T : S> Array<out T>.reduce(
    operation: (acc: S, T) -> S
): S
Common
JVM
JS
Native
reduceIndexed
Accumulates value starting with the first element and applying operation from left to right to current accumulator value and each element with its index in the original array.

fun <S, T : S> Array<out T>.reduceIndexed(
    operation: (index: Int, acc: S, T) -> S
): S
Common
JVM
JS
Native
reduceRight
Accumulates value starting with last element and applying operation from right to left to each element and current accumulator value.

fun <S, T : S> Array<out T>.reduceRight(
    operation: (T, acc: S) -> S
): S
Common
JVM
JS
Native
reduceRightIndexed
Accumulates value starting with last element and applying operation from right to left to each element with its index in the original array and current accumulator value.

fun <S, T : S> Array<out T>.reduceRightIndexed(
    operation: (index: Int, T, acc: S) -> S
): S
Common
JVM
JS
Native
requireNoNulls
Returns an original collection containing all the non-null elements, throwing an IllegalArgumentException if there are any null elements.

fun <T : Any> Array<T?>.requireNoNulls(): Array<T>
Common
JVM
JS
Native
reverse
Reverses elements in the array in-place.

fun <T> Array<T>.reverse()
Common
JVM
JS
Native
reversed
Returns a list with elements in reversed order.

fun <T> Array<out T>.reversed(): List<T>
Common
JVM
JS
Native
reversedArray
Returns an array with elements of this array in reversed order.

fun <T> Array<T>.reversedArray(): Array<T>
Common
JVM
JS
Native
single
Returns the single element, or throws an exception if the array is empty or has more than one element.

fun <T> Array<out T>.single(): T
Returns the single element matching the given predicate, or throws exception if there is no or more than one matching element.

fun <T> Array<out T>.single(predicate: (T) -> Boolean): T
Common
JVM
JS
Native
singleOrNull
Returns single element, or null if the array is empty or has more than one element.

fun <T> Array<out T>.singleOrNull(): T?
Returns the single element matching the given predicate, or null if element was not found or more than one element was found.

fun <T> Array<out T>.singleOrNull(
    predicate: (T) -> Boolean
): T?
Common
JVM
JS
Native
slice
Returns a list containing elements at indices in the specified indices range.

fun <T> Array<out T>.slice(indices: IntRange): List<T>
Returns a list containing elements at specified indices.

fun <T> Array<out T>.slice(indices: Iterable<Int>): List<T>
Common
JVM
JS
Native
sliceArray
Returns an array containing elements of this array at specified indices.

fun <T> Array<T>.sliceArray(
    indices: Collection<Int>
): Array<T>
Returns a list containing elements at indices in the specified indices range.

fun <T> Array<T>.sliceArray(indices: IntRange): Array<T>
sort
JVM
Sorts a range in the array in-place.

fun <T> Array<out T>.sort(
    fromIndex: Int = 0, 
    toIndex: Int = size)
JS
1.1
Sorts the array in-place according to the order specified by the given comparison function.

fun <T> Array<out T>.sort(comparison: (a: T, b: T) -> Int)
Common
JVM
JS
Native
sortBy
Sorts elements in the array in-place according to natural sort order of the value returned by specified selector function.

fun <T, R : Comparable<R>> Array<out T>.sortBy(
    selector: (T) -> R?)
Common
JVM
JS
Native
sortByDescending
Sorts elements in the array in-place descending according to natural sort order of the value returned by specified selector function.

fun <T, R : Comparable<R>> Array<out T>.sortByDescending(
    selector: (T) -> R?)
Common
JVM
JS
Native
sortDescending
Sorts elements in the array in-place descending according to their natural sort order.

fun <T : Comparable<T>> Array<out T>.sortDescending()
Common
JVM
JS
Native
sorted
Returns a list of all elements sorted according to their natural sort order.

fun <T : Comparable<T>> Array<out T>.sorted(): List<T>
Common
JVM
JS
Native
sortedArray
Returns an array with all elements of this array sorted according to their natural sort order.

fun <T : Comparable<T>> Array<T>.sortedArray(): Array<T>
Common
JVM
JS
Native
sortedArrayDescending
Returns an array with all elements of this array sorted descending according to their natural sort order.

fun <T : Comparable<T>> Array<T>.sortedArrayDescending(): Array<T>
Common
JVM
JS
Native
sortedArrayWith
Returns an array with all elements of this array sorted according the specified comparator.

fun <T> Array<out T>.sortedArrayWith(
    comparator: Comparator<in T>
): Array<out T>
Common
JVM
JS
Native
sortedBy
Returns a list of all elements sorted according to natural sort order of the value returned by specified selector function.

fun <T, R : Comparable<R>> Array<out T>.sortedBy(
    selector: (T) -> R?
): List<T>
Common
JVM
JS
Native
sortedByDescending
Returns a list of all elements sorted descending according to natural sort order of the value returned by specified selector function.

fun <T, R : Comparable<R>> Array<out T>.sortedByDescending(
    selector: (T) -> R?
): List<T>
Common
JVM
JS
Native
sortedDescending
Returns a list of all elements sorted descending according to their natural sort order.

fun <T : Comparable<T>> Array<out T>.sortedDescending(): List<T>
Common
JVM
JS
Native
sortedWith
Returns a list of all elements sorted according to the specified comparator.

fun <T> Array<out T>.sortedWith(
    comparator: Comparator<in T>
): List<T>
sortWith
JVM
Sorts the array in-place according to the order specified by the given comparator.

fun <T> Array<out T>.sortWith(comparator: Comparator<in T>)
JVM
Sorts a range in the array in-place with the given comparator.

fun <T> Array<out T>.sortWith(
    comparator: Comparator<in T>, 
    fromIndex: Int = 0, 
    toIndex: Int = size)
Native
1.3
fun <T> Array<out T>.sortWith(
    comparator: Comparator<in T>, 
    fromIndex: Int = 0, 
    toIndex: Int = size)
Native
1.3
subarrayContentToString
Returns a string representation of the contents of the subarray of the specified array as if it is List.

fun <T> Array<out T>.subarrayContentToString(
    offset: Int, 
    length: Int
): String
Common
JVM
JS
Native
subtract
Returns a set containing all elements that are contained by this array and not contained by the specified collection.

infix fun <T> Array<out T>.subtract(
    other: Iterable<T>
): Set<T>
Common
JVM
JS
Native
sum
Returns the sum of all elements in the array.

fun Array<out Byte>.sum(): Int
fun Array<out Short>.sum(): Int
fun Array<out Int>.sum(): Int
fun Array<out Long>.sum(): Long
fun Array<out Float>.sum(): Float
fun Array<out Double>.sum(): Double
Common
JVM
JS
Native
sumBy
Returns the sum of all values produced by selector function applied to each element in the array.

fun <T> Array<out T>.sumBy(selector: (T) -> Int): Int
Common
JVM
JS
Native
sumByDouble
Returns the sum of all values produced by selector function applied to each element in the array.

fun <T> Array<out T>.sumByDouble(
    selector: (T) -> Double
): Double
Common
JVM
JS
Native
take
Returns a list containing first n elements.

fun <T> Array<out T>.take(n: Int): List<T>
Common
JVM
JS
Native
takeLast
Returns a list containing last n elements.

fun <T> Array<out T>.takeLast(n: Int): List<T>
Common
JVM
JS
Native
takeLastWhile
Returns a list containing last elements satisfying the given predicate.

fun <T> Array<out T>.takeLastWhile(
    predicate: (T) -> Boolean
): List<T>
Common
JVM
JS
Native
takeWhile
Returns a list containing first elements satisfying the given predicate.

fun <T> Array<out T>.takeWhile(
    predicate: (T) -> Boolean
): List<T>
Common
JVM
JS
Native
toBooleanArray
Returns an array of Boolean containing all of the elements of this generic array.

fun Array<out Boolean>.toBooleanArray(): BooleanArray
Common
JVM
JS
Native
toByteArray
Returns an array of Byte containing all of the elements of this generic array.

fun Array<out Byte>.toByteArray(): ByteArray
Common
JVM
JS
Native
toCharArray
Returns an array of Char containing all of the elements of this generic array.

fun Array<out Char>.toCharArray(): CharArray
Common
JVM
JS
Native
toCollection
Appends all elements to the given destination collection.

fun <T, C : MutableCollection<in T>> Array<out T>.toCollection(
    destination: C
): C
Native
1.3
toCStringArray
Convert this array of Kotlin strings to C array of C strings, allocating memory for the array and C strings with given AutofreeScope.

fun Array<String>.toCStringArray(
    autofreeScope: AutofreeScope
): CPointer<CPointerVar<ByteVar>>
Native
1.3
toCValues
fun <T : CPointed> Array<CPointer<T>?>.toCValues(): CValues<CPointerVar<T>>
Common
JVM
JS
Native
toDoubleArray
Returns an array of Double containing all of the elements of this generic array.

fun Array<out Double>.toDoubleArray(): DoubleArray
Common
JVM
JS
Native
toFloatArray
Returns an array of Float containing all of the elements of this generic array.

fun Array<out Float>.toFloatArray(): FloatArray
Common
JVM
JS
Native
toHashSet
Returns a HashSet of all elements.

fun <T> Array<out T>.toHashSet(): HashSet<T>
Common
JVM
JS
Native
toIntArray
Returns an array of Int containing all of the elements of this generic array.

fun Array<out Int>.toIntArray(): IntArray
Common
JVM
JS
Native
toList
Returns a List containing all elements.

fun <T> Array<out T>.toList(): List<T>
Common
JVM
JS
Native
toLongArray
Returns an array of Long containing all of the elements of this generic array.

fun Array<out Long>.toLongArray(): LongArray
Common
JVM
JS
Native
toMap
Returns a new map containing all key-value pairs from the given array of pairs.

fun <K, V> Array<out Pair<K, V>>.toMap(): Map<K, V>
Populates and returns the destination mutable map with key-value pairs from the given array of pairs.

fun <K, V, M : MutableMap<in K, in V>> Array<out Pair<K, V>>.toMap(
    destination: M
): M
Common
JVM
JS
Native
toMutableList
Returns a MutableList filled with all elements of this array.

fun <T> Array<out T>.toMutableList(): MutableList<T>
Common
JVM
JS
Native
toMutableSet
Returns a mutable set containing all distinct elements from the given array.

fun <T> Array<out T>.toMutableSet(): MutableSet<T>
Common
JVM
JS
Native
toSet
Returns a Set of all elements.

fun <T> Array<out T>.toSet(): Set<T>
Common
JVM
JS
Native
toShortArray
Returns an array of Short containing all of the elements of this generic array.

fun Array<out Short>.toShortArray(): ShortArray
JVM
toSortedSet
Returns a SortedSet of all elements.

fun <T : Comparable<T>> any_array<T>.toSortedSet(): SortedSet<T>
Common
JVM
JS
Native
union
Returns a set containing all distinct elements from both collections.

infix fun <T> Array<out T>.union(other: Iterable<T>): Set<T>
Common
JVM
JS
Native
unzip
Returns a pair of lists, where first list is built from the first values of each pair from this array, second list is built from the second values of each pair from this array.

fun <T, R> Array<out Pair<T, R>>.unzip(): Pair<List<T>, List<R>>
Common
JVM
JS
Native
withIndex
Returns a lazy Iterable of IndexedValue for each element of the original array.

fun <T> Array<out T>.withIndex(): Iterable<IndexedValue<T>>
Common
JVM
JS
Native
zip