interface List<out E> : Collection<E>
A generic ordered collection of elements. Methods in this interface support only read-only access to the list; read/write access is supported through the MutableList interface.
E
- the type of elements contained in the list. The list is covariant on its element type.
abstract val size: Int Returns the size of the collection. |
abstract fun contains(element: E): Boolean Checks if the specified element is contained in this collection. | |
abstract fun containsAll(elements: Collection<E>): Boolean Checks if all elements in the specified collection are contained in this collection. | |
abstract operator fun get(index: Int): E Returns the element at the specified index in the list. | |
abstract fun indexOf(element: E): Int Returns the index of the first occurrence of the specified element in the list, or -1 if the specified element is not contained in the list. | |
abstract fun isEmpty(): Boolean Returns | |
abstract fun iterator(): Iterator<E> Returns an iterator over the elements of this object. | |
abstract fun lastIndexOf(element: E): Int Returns the index of the last occurrence of the specified element in the list, or -1 if the specified element is not contained in the list. | |
abstract fun listIterator(): ListIterator<E> Returns a list iterator over the elements in this list (in proper sequence). abstract fun listIterator(index: Int): ListIterator<E> Returns a list iterator over the elements in this list (in proper sequence), starting at the specified index. | |
abstract fun subList(fromIndex: Int, toIndex: Int): List<E> Returns a view of the portion of this list between the specified fromIndex (inclusive) and toIndex (exclusive). The returned list is backed by this list, so non-structural changes in the returned list are reflected in this list, and vice-versa. |
val Collection<*>.indices: IntRange Returns an IntRange of the valid indices for this collection. | |
val <T> List<T>.lastIndex: Int Returns the index of the last item in the list or -1 if the list is empty. |
fun <T> Iterable<T>.all(predicate: (T) -> Boolean): Boolean Returns | |
fun <T> Iterable<T>.any(): Boolean Returns fun <T> Iterable<T>.any(predicate: (T) -> Boolean): Boolean Returns | |
fun <T> Iterable<T>.asIterable(): Iterable<T> Returns this collection as an Iterable. | |
fun <T> List<T>.asReversed(): List<T> Returns a reversed read-only view of the original List. All changes made in the original list will be reflected in the reversed one. | |
fun <T> Iterable<T>.asSequence(): Sequence<T> Creates a Sequence instance that wraps the original collection returning its elements when being iterated. | |
fun <T, K, V> Iterable<T>.associate( transform: (T) -> Pair<K, V> ): Map<K, V> Returns a Map containing key-value pairs provided by transform function applied to elements of the given collection. | |
fun <T, K> Iterable<T>.associateBy( keySelector: (T) -> K ): Map<K, T> Returns a Map containing the elements from the given collection indexed by the key returned from keySelector function applied to each element. fun <T, K, V> Iterable<T>.associateBy( keySelector: (T) -> K, valueTransform: (T) -> V ): Map<K, V> Returns a Map containing the values provided by valueTransform and indexed by keySelector functions applied to elements of the given collection. | |
fun <T, K, M : MutableMap<in K, in T>> Iterable<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 applied to each element of the given collection and value is the element itself. fun <T, K, V, M : MutableMap<in K, in V>> Iterable<T>.associateByTo( destination: M, keySelector: (T) -> K, valueTransform: (T) -> V ): 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 collection. | |
fun <T, K, V, M : MutableMap<in K, in V>> Iterable<T>.associateTo( destination: M, transform: (T) -> Pair<K, V> ): M Populates and returns the destination mutable map with key-value pairs provided by transform function applied to each element of the given collection. | |
fun <T : Comparable<T>> List<T?>.binarySearch( element: T?, fromIndex: Int = 0, toIndex: Int = size ): Int Searches this list or its range for the provided element using the binary search algorithm. The list is expected to be sorted into ascending order according to the Comparable natural ordering of its elements, otherwise the result is undefined. fun <T> List<T>.binarySearch( element: T, comparator: Comparator<in T>, fromIndex: Int = 0, toIndex: Int = size ): Int fun <T> List<T>.binarySearch( element: T, comparator: Comparator<in T>, fromIndex: Int = 0, toIndex: Int = size ): Int Searches this list or its range for the provided element using the binary search algorithm. The list is expected to be sorted into ascending order according to the specified comparator, otherwise the result is undefined. fun <T> List<T>.binarySearch( fromIndex: Int = 0, toIndex: Int = size, comparison: (T) -> Int ): Int Searches this list or its range for an element for which comparison function returns zero using the binary search algorithm. The list is expected to be sorted into ascending order according to the provided comparison, otherwise the result is undefined. | |
fun <T, K : Comparable<K>> List<T>.binarySearchBy( key: K?, fromIndex: Int = 0, toIndex: Int = size, selector: (T) -> K? ): Int Searches this list or its range for an element having the key returned by the specified selector function equal to the provided key value using the binary search algorithm. The list is expected to be sorted into ascending order according to the Comparable natural ordering of keys of its elements. otherwise the result is undefined. | |
fun <T> Iterable<T>.chunked(size: Int): List<List<T>> Splits this collection into a list of lists each not exceeding the given size. fun <T, R> Iterable<T>.chunked( size: Int, transform: (List<T>) -> R ): List<R> Splits this collection into several lists each not exceeding the given size and applies the given transform function to an each. | |
operator fun <T> List<T>.component1(): T Returns 1st element from the collection. | |
operator fun <T> List<T>.component2(): T Returns 2nd element from the collection. | |
operator fun <T> List<T>.component3(): T Returns 3rd element from the collection. | |
operator fun <T> List<T>.component4(): T Returns 4th element from the collection. | |
operator fun <T> List<T>.component5(): T Returns 5th element from the collection. | |
operator fun <T> Iterable<T>.contains(element: T): Boolean Returns | |
fun <T> Collection<T>.containsAll( elements: Collection<T> ): Boolean Checks if all elements in the specified collection are contained in this collection. | |
fun <T> Iterable<T>.count(predicate: (T) -> Boolean): Int Returns the number of elements matching the given predicate. | |
fun <T> Iterable<T>.distinct(): List<T> Returns a list containing only distinct elements from the given collection. | |
fun <T, K> Iterable<T>.distinctBy( selector: (T) -> K ): List<T> Returns a list containing only elements from the given collection having distinct keys returned by the given selector function. | |
fun <T> Iterable<T>.drop(n: Int): List<T> Returns a list containing all elements except first n elements. | |
fun <T> List<T>.dropLast(n: Int): List<T> Returns a list containing all elements except last n elements. | |
fun <T> List<T>.dropLastWhile( predicate: (T) -> Boolean ): List<T> Returns a list containing all elements except last elements that satisfy the given predicate. | |
fun <T> Iterable<T>.dropWhile( predicate: (T) -> Boolean ): List<T> Returns a list containing all elements except first elements that satisfy the given predicate. | |
fun <T> List<T>.elementAt(index: Int): T Returns an element at the given index or throws an IndexOutOfBoundsException if the index is out of bounds of this list. | |
fun <T> List<T>.elementAtOrElse( index: Int, defaultValue: (Int) -> T ): T Returns an element at the given index or the result of calling the defaultValue function if the index is out of bounds of this list. fun <T> Iterable<T>.elementAtOrElse( index: Int, defaultValue: (Int) -> T ): T Returns an element at the given index or the result of calling the defaultValue function if the index is out of bounds of this collection. | |
fun <T> List<T>.elementAtOrNull(index: Int): T? Returns an element at the given index or | |
fun <T> Iterable<T>.filter( predicate: (T) -> Boolean ): List<T> Returns a list containing only elements matching the given predicate. | |
fun <T> Iterable<T>.filterIndexed( predicate: (index: Int, T) -> Boolean ): List<T> Returns a list containing only elements matching the given predicate. | |
fun <T, C : MutableCollection<in T>> Iterable<T>.filterIndexedTo( destination: C, predicate: (index: Int, T) -> Boolean ): C Appends all elements matching the given predicate to the given destination. | |
fun <R> Iterable<*>.filterIsInstance(): List<R> Returns a list containing all elements that are instances of specified type parameter R. fun <R> Iterable<*>.filterIsInstance( klass: Class<R> ): List<R> Returns a list containing all elements that are instances of specified class. | |
fun <R, C : MutableCollection<in R>> Iterable<*>.filterIsInstanceTo( destination: C ): C Appends all elements that are instances of specified type parameter R to the given destination. fun <C : MutableCollection<in R>, R> Iterable<*>.filterIsInstanceTo( destination: C, klass: Class<R> ): C Appends all elements that are instances of specified class to the given destination. | |
fun <T> Iterable<T>.filterNot( predicate: (T) -> Boolean ): List<T> Returns a list containing all elements not matching the given predicate. | |
fun <T : Any> Iterable<T?>.filterNotNull(): List<T> Returns a list containing all elements that are not | |
fun <C : MutableCollection<in T>, T : Any> Iterable<T?>.filterNotNullTo( destination: C ): C Appends all elements that are not | |
fun <T, C : MutableCollection<in T>> Iterable<T>.filterNotTo( destination: C, predicate: (T) -> Boolean ): C Appends all elements not matching the given predicate to the given destination. | |
fun <T, C : MutableCollection<in T>> Iterable<T>.filterTo( destination: C, predicate: (T) -> Boolean ): C Appends all elements matching the given predicate to the given destination. | |
fun <T> Iterable<T>.find(predicate: (T) -> Boolean): T? Returns the first element matching the given predicate, or | |
fun <T> List<T>.findLast(predicate: (T) -> Boolean): T? fun <T> Iterable<T>.findLast(predicate: (T) -> Boolean): T? Returns the last element matching the given predicate, or | |
fun <T> List<T>.first(): T Returns first element. fun <T> Iterable<T>.first(predicate: (T) -> Boolean): T Returns the first element matching the given predicate. | |
fun <T> List<T>.firstOrNull(): T? Returns the first element, or fun <T> Iterable<T>.firstOrNull( predicate: (T) -> Boolean ): T? Returns the first element matching the given predicate, or | |
fun <T, R> Iterable<T>.flatMap( transform: (T) -> Iterable<R> ): List<R> Returns a single list of all elements yielded from results of transform function being invoked on each element of original collection. | |
fun <T, R, C : MutableCollection<in R>> Iterable<T>.flatMapTo( destination: C, transform: (T) -> Iterable<R> ): C Appends all elements yielded from results of transform function being invoked on each element of original collection, to the given destination. | |
fun <T, R> Iterable<T>.fold( initial: R, operation: (acc: R, T) -> R ): R Accumulates value starting with initial value and applying operation from left to right to current accumulator value and each element. | |
fun <T, R> Iterable<T>.foldIndexed( initial: R, operation: (index: Int, acc: R, T) -> R ): R 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 collection. | |
fun <T, R> List<T>.foldRight( initial: R, operation: (T, acc: R) -> R ): R Accumulates value starting with initial value and applying operation from right to left to each element and current accumulator value. | |
fun <T, R> List<T>.foldRightIndexed( initial: R, operation: (index: Int, T, acc: R) -> R ): R Accumulates value starting with initial value and applying operation from right to left to each element with its index in the original list and current accumulator value. | |
fun <T> Iterable<T>.forEach(action: (T) -> Unit) Performs the given action on each element. | |
fun <T> Iterable<T>.forEachIndexed( action: (index: Int, T) -> Unit) Performs the given action on each element, providing sequential index with the element. | |
fun <T> List<T>.getOrElse( index: Int, defaultValue: (Int) -> T ): T Returns an element at the given index or the result of calling the defaultValue function if the index is out of bounds of this list. | |
fun <T> List<T>.getOrNull(index: Int): T? Returns an element at the given index or | |
fun <T, K> Iterable<T>.groupBy( keySelector: (T) -> K ): Map<K, List<T>> Groups elements of the original collection 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, V> Iterable<T>.groupBy( keySelector: (T) -> K, valueTransform: (T) -> V ): Map<K, List<V>> Groups values returned by the valueTransform function applied to each element of the original collection 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, M : MutableMap<in K, MutableList<T>>> Iterable<T>.groupByTo( destination: M, keySelector: (T) -> K ): M Groups elements of the original collection 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, V, M : MutableMap<in K, MutableList<V>>> Iterable<T>.groupByTo( destination: M, keySelector: (T) -> K, valueTransform: (T) -> V ): M Groups values returned by the valueTransform function applied to each element of the original collection 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> Iterable<T>.groupingBy( keySelector: (T) -> K ): Grouping<T, K> Creates a Grouping source from a collection 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> List<T>.indexOf(element: T): Int Returns first index of element, or -1 if the list does not contain element. fun <T> Iterable<T>.indexOf(element: T): Int Returns first index of element, or -1 if the collection does not contain element. | |
fun <T> List<T>.indexOfFirst(predicate: (T) -> Boolean): Int Returns index of the first element matching the given predicate, or -1 if the list does not contain such element. fun <T> Iterable<T>.indexOfFirst( predicate: (T) -> Boolean ): Int Returns index of the first element matching the given predicate, or -1 if the collection does not contain such element. | |
fun <T> List<T>.indexOfLast(predicate: (T) -> Boolean): Int Returns index of the last element matching the given predicate, or -1 if the list does not contain such element. fun <T> Iterable<T>.indexOfLast( predicate: (T) -> Boolean ): Int Returns index of the last element matching the given predicate, or -1 if the collection does not contain such element. | |
infix fun <T> Iterable<T>.intersect( other: Iterable<T> ): Set<T> Returns a set containing all elements that are contained by both this set and the specified collection. | |
fun <T> Collection<T>.isNotEmpty(): Boolean Returns | |
fun <T, A> Iterable<T>.joinTo( buffer: A, separator: CharSequence = ", ", prefix: CharSequence = "", postfix: CharSequence = "", limit: Int = -1, truncated: CharSequence = "...", transform: (T) -> CharSequence = null ): A Appends the string from all the elements separated using separator and using the given prefix and postfix if supplied. | |
fun <T> Iterable<T>.joinToString( separator: CharSequence = ", ", prefix: CharSequence = "", postfix: CharSequence = "", limit: Int = -1, truncated: CharSequence = "...", transform: (T) -> CharSequence = null ): String Creates a string from all the elements separated using separator and using the given prefix and postfix if supplied. | |
fun <T> List<T>.last(): T Returns the last element. fun <T> List<T>.last(predicate: (T) -> Boolean): T fun <T> Iterable<T>.last(predicate: (T) -> Boolean): T Returns the last element matching the given predicate. | |
fun <T> List<T>.lastIndexOf(element: T): Int Returns last index of element, or -1 if the list does not contain element. fun <T> Iterable<T>.lastIndexOf(element: T): Int Returns last index of element, or -1 if the collection does not contain element. | |
fun <T> List<T>.lastOrNull(): T? Returns the last element, or fun <T> List<T>.lastOrNull(predicate: (T) -> Boolean): T? fun <T> Iterable<T>.lastOrNull(predicate: (T) -> Boolean): T? Returns the last element matching the given predicate, or | |
fun <T, R> Iterable<T>.map(transform: (T) -> R): List<R> Returns a list containing the results of applying the given transform function to each element in the original collection. | |
fun <T, R> Iterable<T>.mapIndexed( transform: (index: Int, T) -> R ): List<R> Returns a list containing the results of applying the given transform function to each element and its index in the original collection. | |
fun <T, R : Any> Iterable<T>.mapIndexedNotNull( transform: (index: Int, T) -> R? ): List<R> Returns a list containing only the non-null results of applying the given transform function to each element and its index in the original collection. | |
fun <T, R : Any, C : MutableCollection<in R>> Iterable<T>.mapIndexedNotNullTo( destination: C, transform: (index: Int, T) -> R? ): C Applies the given transform function to each element and its index in the original collection and appends only the non-null results to the given destination. | |
fun <T, R, C : MutableCollection<in R>> Iterable<T>.mapIndexedTo( destination: C, transform: (index: Int, T) -> R ): C Applies the given transform function to each element and its index in the original collection and appends the results to the given destination. | |
fun <T, R : Any> Iterable<T>.mapNotNull( transform: (T) -> R? ): List<R> Returns a list containing only the non-null results of applying the given transform function to each element in the original collection. | |
fun <T, R : Any, C : MutableCollection<in R>> Iterable<T>.mapNotNullTo( destination: C, transform: (T) -> R? ): C Applies the given transform function to each element in the original collection and appends only the non-null results to the given destination. | |
fun <T, R, C : MutableCollection<in R>> Iterable<T>.mapTo( destination: C, transform: (T) -> R ): C Applies the given transform function to each element of the original collection and appends the results to the given destination. | |
fun <T : Comparable<T>> Iterable<T>.max(): T? Returns the largest element or | |
fun <T, R : Comparable<R>> Iterable<T>.maxBy( selector: (T) -> R ): T? Returns the first element yielding the largest value of the given function or | |
fun <T> Iterable<T>.maxWith(comparator: Comparator<in T>): T? fun <T> Iterable<T>.maxWith(comparator: Comparator<in T>): T? Returns the first element having the largest value according to the provided comparator or | |
fun <T : Comparable<T>> Iterable<T>.min(): T? Returns the smallest element or | |
fun <T, R : Comparable<R>> Iterable<T>.minBy( selector: (T) -> R ): T? Returns the first element yielding the smallest value of the given function or | |
fun <T> Iterable<T>.minWith(comparator: Comparator<in T>): T? fun <T> Iterable<T>.minWith(comparator: Comparator<in T>): T? Returns the first element having the smallest value according to the provided comparator or | |
operator fun <T> Iterable<T>.minus(element: T): List<T> Returns a list containing all elements of the original collection without the first occurrence of the given element. operator fun <T> Iterable<T>.minus( elements: Array<out T> ): List<T> Returns a list containing all elements of the original collection except the elements contained in the given elements array. operator fun <T> Iterable<T>.minus( elements: Iterable<T> ): List<T> Returns a list containing all elements of the original collection except the elements contained in the given elements collection. operator fun <T> Iterable<T>.minus( elements: Sequence<T> ): List<T> Returns a list containing all elements of the original collection except the elements contained in the given elements sequence. | |
fun <T> Iterable<T>.minusElement(element: T): List<T> Returns a list containing all elements of the original collection without the first occurrence of the given element. | |
fun <T> Iterable<T>.none(): Boolean Returns fun <T> Iterable<T>.none(predicate: (T) -> Boolean): Boolean Returns | |
fun <T> List<T>?.orEmpty(): List<T> Returns this List if it's not | |
fun <T> Iterable<T>.partition( predicate: (T) -> Boolean ): Pair<List<T>, List<T>> Splits the original collection into pair of lists, where first list contains elements for which predicate yielded | |
operator fun <T> Iterable<T>.plus(element: T): List<T> operator fun <T> Collection<T>.plus(element: T): List<T> Returns a list containing all elements of the original collection and then the given element. operator fun <T> Iterable<T>.plus( elements: Array<out T> ): List<T> operator fun <T> Collection<T>.plus( elements: Array<out T> ): List<T> Returns a list containing all elements of the original collection and then all elements of the given elements array. operator fun <T> Iterable<T>.plus( elements: Iterable<T> ): List<T> operator fun <T> Collection<T>.plus( elements: Iterable<T> ): List<T> Returns a list containing all elements of the original collection and then all elements of the given elements collection. operator fun <T> Iterable<T>.plus( elements: Sequence<T> ): List<T> operator fun <T> Collection<T>.plus( elements: Sequence<T> ): List<T> Returns a list containing all elements of the original collection and then all elements of the given elements sequence. | |
fun <T> Iterable<T>.plusElement(element: T): List<T> fun <T> Collection<T>.plusElement(element: T): List<T> Returns a list containing all elements of the original collection and then the given element. | |
fun <S, T : S> Iterable<T>.reduce( operation: (acc: S, T) -> S ): S 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> Iterable<T>.reduceIndexed( operation: (index: Int, acc: S, T) -> S ): S 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 collection. | |
fun <S, T : S> List<T>.reduceRight( operation: (T, acc: S) -> S ): S Accumulates value starting with last element and applying operation from right to left to each element and current accumulator value. | |
fun <S, T : S> List<T>.reduceRightIndexed( operation: (index: Int, T, acc: S) -> S ): S Accumulates value starting with last element and applying operation from right to left to each element with its index in the original list and current accumulator value. | |
fun <T : Any> List<T?>.requireNoNulls(): List<T> Returns an original collection containing all the non- | |
fun <T> Iterable<T>.reversed(): List<T> Returns a list with elements in reversed order. | |
fun <T> Iterable<T>.shuffled(): List<T> Returns a new list with the elements of this list randomly shuffled. fun <T> Iterable<T>.shuffled(random: Random): List<T> Returns a new list with the elements of this list randomly shuffled using the specified random instance as the source of randomness. | |
fun <T> List<T>.single(): T Returns the single element, or throws an exception if the list is empty or has more than one element. fun <T> Iterable<T>.single(predicate: (T) -> Boolean): T Returns the single element matching the given predicate, or throws exception if there is no or more than one matching element. | |
fun <T> List<T>.singleOrNull(): T? Returns single element, or fun <T> Iterable<T>.singleOrNull( predicate: (T) -> Boolean ): T? Returns the single element matching the given predicate, or | |
fun <T> List<T>.slice(indices: IntRange): List<T> Returns a list containing elements at indices in the specified indices range. fun <T> List<T>.slice(indices: Iterable<Int>): List<T> Returns a list containing elements at specified indices. | |
fun <T : Comparable<T>> Iterable<T>.sorted(): List<T> Returns a list of all elements sorted according to their natural sort order. | |
fun <T, R : Comparable<R>> Iterable<T>.sortedBy( selector: (T) -> R? ): List<T> 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>> Iterable<T>.sortedByDescending( selector: (T) -> R? ): List<T> Returns a list of all elements sorted descending according to natural sort order of the value returned by specified selector function. | |
fun <T : Comparable<T>> Iterable<T>.sortedDescending(): List<T> Returns a list of all elements sorted descending according to their natural sort order. | |
fun <T> Iterable<T>.sortedWith( comparator: Comparator<in T> ): List<T> fun <T> Iterable<T>.sortedWith( comparator: Comparator<in T> ): List<T> Returns a list of all elements sorted according to the specified comparator. | |
infix fun <T> Iterable<T>.subtract( other: Iterable<T> ): Set<T> Returns a set containing all elements that are contained by this collection and not contained by the specified collection. | |
fun <T> Iterable<T>.sumBy(selector: (T) -> Int): Int Returns the sum of all values produced by selector function applied to each element in the collection. | |
fun <T> Iterable<T>.sumByDouble( selector: (T) -> Double ): Double Returns the sum of all values produced by selector function applied to each element in the collection. | |
fun <T> Iterable<T>.take(n: Int): List<T> Returns a list containing first n elements. | |
fun <T> List<T>.takeLast(n: Int): List<T> Returns a list containing last n elements. | |
fun <T> List<T>.takeLastWhile( predicate: (T) -> Boolean ): List<T> Returns a list containing last elements satisfying the given predicate. | |
fun <T> Iterable<T>.takeWhile( predicate: (T) -> Boolean ): List<T> Returns a list containing first elements satisfying the given predicate. | |
fun <T, C : MutableCollection<in T>> Iterable<T>.toCollection( destination: C ): C Appends all elements to the given destination collection. | |
fun <T> Iterable<T>.toHashSet(): HashSet<T> Returns a HashSet of all elements. | |
fun <T> Iterable<T>.toList(): List<T> Returns a List containing all elements. | |
fun <T> Iterable<T>.toMutableSet(): MutableSet<T> Returns a mutable set containing all distinct elements from the given collection. | |
fun <T> Iterable<T>.toSet(): Set<T> Returns a Set of all elements. | |
fun <T : Comparable<T>> Iterable<T>.toSortedSet(): SortedSet<T> fun <T> Iterable<T>.toSortedSet( comparator: Comparator<in T> ): SortedSet<T> Returns a SortedSet of all elements. | |
fun <T> Collection<T>.toTypedArray(): Array<T> Returns a typed array containing all of the elements of this collection. | |
infix fun <T> Iterable<T>.union(other: Iterable<T>): Set<T> Returns a set containing all distinct elements from both collections. | |
fun <T> Iterable<T>.windowed( size: Int, step: Int = 1, partialWindows: Boolean = false ): List<List<T>> Returns a list of snapshots of the window of the given size sliding along this collection with the given step, where each snapshot is a list. fun <T, R> Iterable<T>.windowed( size: Int, step: Int = 1, partialWindows: Boolean = false, transform: (List<T>) -> R ): List<R> Returns a list of results of applying the given transform function to an each list representing a view over the window of the given size sliding along this collection with the given step. | |
fun <T> Iterable<T>.withIndex(): Iterable<IndexedValue<T>> Returns a lazy Iterable of IndexedValue for each element of the original collection. | |
infix fun <T, R> Iterable<T>.zip( other: Array<out R> ): List<Pair<T, R>> infix fun <T, R> Iterable<T>.zip( other: Iterable<R> ): List<Pair<T, R>> Returns a list of pairs built from elements of both collections with same indexes. List has length of shortest collection. fun <T, R, V> Iterable<T>.zip( other: Array<out R>, transform: (a: T, b: R) -> V ): List<V> fun <T, R, V> Iterable<T>.zip( other: Iterable<R>, transform: (a: T, b: R) -> V ): List<V> Returns a list of values built from elements of both collections with same indexes using provided transform. List has length of shortest collection. | |
fun <T> Iterable<T>.zipWithNext(): List<Pair<T, T>> Returns a list of pairs of each two adjacent elements in this collection. fun <T, R> Iterable<T>.zipWithNext( transform: (a: T, b: T) -> R ): List<R> Returns a list containing the results of applying the given transform function to an each pair of two adjacent elements in this collection. |
abstract class AbstractList<out E> : AbstractCollection<E>, List<E> Provides a skeletal implementation of the read-only List interface. | |
interface MutableList<E> : List<E>, MutableCollection<E> A generic ordered collection of elements that supports adding and removing elements. |
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