stdlib/kotlin.collections/MutableList

MutableList

interface MutableList<E> : List<E> , MutableCollection<E> (source)

A generic ordered collection of elements that supports adding and removing elements.

Since Kotlin

1.0
interface MutableList<E> : List<E> , MutableCollection<E> (source)

A generic ordered collection of elements that supports adding and removing elements.

Since Kotlin

1.1

Parameters

E

the type of elements contained in the list. The mutable list is invariant in its element type.

E

the type of elements contained in the list. The mutable list is invariant in its element type.

Functions

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abstract override fun add(element: E): Boolean

Adds the specified element to the end of this list.

Since Kotlin 1.0
abstract fun add(index: Int, element: E)

Inserts an element into the list at the specified index.

Since Kotlin 1.0
abstract override fun add(element: E): Boolean

Adds the specified element to the end of this list.

Since Kotlin 1.1
abstract fun add(index: Int, element: E)

Inserts an element into the list at the specified index.

Since Kotlin 1.1
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abstract override fun addAll(elements: Collection<E>): Boolean

Adds all of the elements of the specified collection to the end of this list.

Since Kotlin 1.0
abstract fun addAll(index: Int, elements: Collection<E>): Boolean

Inserts all of the elements of the specified collection elements into this list at the specified index.

Since Kotlin 1.0
abstract override fun addAll(elements: Collection<E>): Boolean

Adds all of the elements of the specified collection to the end of this list.

Since Kotlin 1.1
abstract fun addAll(index: Int, elements: Collection<E>): Boolean

Inserts all of the elements of the specified collection elements into this list at the specified index.

Since Kotlin 1.1
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abstract override fun clear()

Removes all elements from this collection.

Since Kotlin 1.0
abstract override fun clear()

Removes all elements from this collection.

Since Kotlin 1.1
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abstract operator override fun contains(element: E): Boolean

Checks if the specified element is contained in this collection.

Since Kotlin 1.0
abstract operator override fun contains(element: E): Boolean

Checks if the specified element is contained in this collection.

Since Kotlin 1.1
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abstract override fun containsAll(elements: Collection<E>): Boolean

Checks if all elements in the specified collection are contained in this collection.

Since Kotlin 1.0
abstract override fun containsAll(elements: Collection<E>): Boolean

Checks if all elements in the specified collection are contained in this collection.

Since Kotlin 1.1
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abstract operator fun get(index: Int): E

Returns the element at the specified index in the list.

Since Kotlin 1.0
abstract operator fun get(index: Int): E

Returns the element at the specified index in the list.

Since Kotlin 1.1
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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.

Since Kotlin 1.0
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.

Since Kotlin 1.1
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abstract override fun isEmpty(): Boolean

Returns true if the collection is empty (contains no elements), false otherwise.

Since Kotlin 1.0
abstract override fun isEmpty(): Boolean

Returns true if the collection is empty (contains no elements), false otherwise.

Since Kotlin 1.1
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abstract operator override fun iterator(): Iterator<E>

Returns an iterator over the elements of this object.

Since Kotlin 1.0
abstract operator override fun iterator(): Iterator<E>

Returns an iterator over the elements of this object.

Since Kotlin 1.1
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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.

Since Kotlin 1.0
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.

Since Kotlin 1.1
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abstract override fun listIterator(): MutableListIterator<E>

Returns a list iterator over the elements in this list (in proper sequence).

Since Kotlin 1.0
abstract override fun listIterator(index: Int): MutableListIterator<E>

Returns a list iterator over the elements in this list (in proper sequence), starting at the specified index.

Since Kotlin 1.0
abstract override fun listIterator(): MutableListIterator<E>

Returns a list iterator over the elements in this list (in proper sequence).

Since Kotlin 1.1
abstract override fun listIterator(index: Int): MutableListIterator<E>

Returns a list iterator over the elements in this list (in proper sequence), starting at the specified index.

Since Kotlin 1.1
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abstract override fun remove(element: E): Boolean

Removes a single instance of the specified element from this collection, if it is present.

Since Kotlin 1.0
abstract override fun remove(element: E): Boolean

Removes a single instance of the specified element from this collection, if it is present.

Since Kotlin 1.1
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abstract override fun removeAll(elements: Collection<E>): Boolean

Removes all of this collection's elements that are also contained in the specified collection.

Since Kotlin 1.0
abstract override fun removeAll(elements: Collection<E>): Boolean

Removes all of this collection's elements that are also contained in the specified collection.

Since Kotlin 1.1
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abstract fun removeAt(index: Int): E

Removes an element at the specified index from the list.

Since Kotlin 1.0
abstract fun removeAt(index: Int): E

Removes an element at the specified index from the list.

Since Kotlin 1.1
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abstract override fun retainAll(elements: Collection<E>): Boolean

Retains only the elements in this collection that are contained in the specified collection.

Since Kotlin 1.0
abstract override fun retainAll(elements: Collection<E>): Boolean

Retains only the elements in this collection that are contained in the specified collection.

Since Kotlin 1.1
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abstract operator fun set(index: Int, element: E): E

Replaces the element at the specified position in this list with the specified element.

Since Kotlin 1.0
abstract operator fun set(index: Int, element: E): E

Replaces the element at the specified position in this list with the specified element.

Since Kotlin 1.1
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abstract override fun subList(fromIndex: Int, toIndex: Int): MutableList<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.

Since Kotlin 1.0
abstract override fun subList(fromIndex: Int, toIndex: Int): MutableList<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.

Since Kotlin 1.1

Properties

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abstract override val size: Int

Returns the size of the collection.

Since Kotlin 1.0
abstract override val size: Int

Returns the size of the collection.

Since Kotlin 1.1

Extensions

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fun <R> Iterable<*>.filterIsInstance(klass: Class<R>): List<R>
fun <R> Iterable<*>.filterIsInstance(klass: Class<R>): List<R>

Returns a list containing all elements that are instances of specified class.

Since Kotlin 1.0
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fun <C : MutableCollection<in R>, R> Iterable<*>.filterIsInstanceTo(destination: C, klass: Class<R>): C
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.

Since Kotlin 1.0
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fun Iterable<Double>.max(): Double?
fun Iterable<Float>.max(): Float?
fun Iterable<Double>.max(): Double?
fun Iterable<Float>.max(): Float?
Since Kotlin 1.1
fun <T : Comparable<T>> Iterable<T>.max(): T?
fun <T : Comparable<T>> Iterable<T>.max(): T?
Since Kotlin 1.0
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inline fun <T, R : Comparable<R>> Iterable<T>.maxBy(selector: (T) -> R): T?
inline fun <T, R : Comparable<R>> Iterable<T>.maxBy(selector: (T) -> R): T?
Since Kotlin 1.0
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fun <T> Iterable<T>.maxWith(comparator: Comparator<in T>): T?
fun <T> Iterable<T>.maxWith(comparator: Comparator<in T>): T?
Since Kotlin 1.0
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fun Iterable<Double>.min(): Double?
fun Iterable<Float>.min(): Float?
fun Iterable<Double>.min(): Double?
fun Iterable<Float>.min(): Float?
Since Kotlin 1.1
fun <T : Comparable<T>> Iterable<T>.min(): T?
fun <T : Comparable<T>> Iterable<T>.min(): T?
Since Kotlin 1.0
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inline fun <T, R : Comparable<R>> Iterable<T>.minBy(selector: (T) -> R): T?
inline fun <T, R : Comparable<R>> Iterable<T>.minBy(selector: (T) -> R): T?
Since Kotlin 1.0
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fun <T> Iterable<T>.minWith(comparator: Comparator<in T>): T?
fun <T> Iterable<T>.minWith(comparator: Comparator<in T>): T?
Since Kotlin 1.0
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inline fun <T> MutableList<T>.sort(comparator: Comparator<in T>)
inline fun <T> MutableList<T>.sort(comparison: (T, T) -> Int)
inline fun <T> MutableList<T>.sort(comparator: Comparator<in T>)
inline fun <T> MutableList<T>.sort(comparison: (T, T) -> Int)
Since Kotlin 1.0
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fun <T : Comparable<T>> Iterable<T>.toSortedSet(): SortedSet<T>
fun <T> Iterable<T>.toSortedSet(comparator: Comparator<in T>): SortedSet<T>
fun <T : Comparable<T>> Iterable<T>.toSortedSet(): SortedSet<T>
fun <T> Iterable<T>.toSortedSet(comparator: Comparator<in T>): SortedSet<T>

Returns a new SortedSet of all elements.

Since Kotlin 1.0