kotlin-stdlib/kotlin.ranges/IntRange

IntRange

class IntRange(start: Int, endInclusive: Int) : IntProgression, ClosedRange<Int> (source)

A range of values of type Int.

Since Kotlin

1.1
class IntRange(start: Int, endInclusive: Int) : IntProgression, ClosedRange<Int> (source)

A range of values of type Int.

Since Kotlin

1.0

Constructors

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constructor(start: Int, endInclusive: Int)
constructor(start: Int, endInclusive: Int)

Types

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object Companion
Since Kotlin 1.1
object Companion
Since Kotlin 1.0

Properties

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open override val endInclusive: Int

The maximum value in the range (inclusive).

Since Kotlin 1.1
open override val endInclusive: Int

The maximum value in the range (inclusive).

Since Kotlin 1.0
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val first: Int

The first element in the progression.

Since Kotlin 1.1
val first: Int

The first element in the progression.

Since Kotlin 1.0
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val last: Int

The last element in the progression.

Since Kotlin 1.1
val last: Int

The last element in the progression.

Since Kotlin 1.0
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open override val start: Int

The minimum value in the range.

Since Kotlin 1.1
open override val start: Int

The minimum value in the range.

Since Kotlin 1.0
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val step: Int

The step of the progression.

Since Kotlin 1.1
val step: Int

The step of the progression.

Since Kotlin 1.0

Functions

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inline fun <T> Iterable<T>.all(predicate: (T) -> Boolean): Boolean

Returns true if all elements match the given predicate.

Since Kotlin 1.0
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fun <T> Iterable<T>.any(): Boolean

Returns true if collection has at least one element.

Since Kotlin 1.0
inline fun <T> Iterable<T>.any(predicate: (T) -> Boolean): Boolean

Returns true if at least one element matches the given predicate.

Since Kotlin 1.0
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inline fun <T> Iterable<T>.asIterable(): Iterable<T>

Returns this collection as an Iterable.

Since Kotlin 1.0
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fun <T> Iterable<T>.asSequence(): Sequence<T>

Creates a Sequence instance that wraps the original collection returning its elements when being iterated.

Since Kotlin 1.0
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inline 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.

Since Kotlin 1.0
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inline 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.

Since Kotlin 1.0
inline 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.

Since Kotlin 1.0
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inline 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.

Since Kotlin 1.0
inline 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.

Since Kotlin 1.0
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inline 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.

Since Kotlin 1.0
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@JvmName(name = "averageOfByte")
fun Iterable<Byte>.average(): Double
@JvmName(name = "averageOfDouble")
fun Iterable<Double>.average(): Double
@JvmName(name = "averageOfFloat")
fun Iterable<Float>.average(): Double
@JvmName(name = "averageOfInt")
fun Iterable<Int>.average(): Double
@JvmName(name = "averageOfLong")
fun Iterable<Long>.average(): Double
@JvmName(name = "averageOfShort")
fun Iterable<Short>.average(): Double

Returns an average value of elements in the collection.

Since Kotlin 1.0
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open operator override fun contains(value: Int): Boolean

Checks whether the specified value belongs to the range.

Since Kotlin 1.1
open operator override fun contains(value: Int): Boolean

Checks whether the specified value belongs to the range.

Since Kotlin 1.0
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operator fun <T> Iterable<T>.contains(element: T): Boolean

Returns true if element is found in the collection.

Since Kotlin 1.0
@JvmName(name = "byteRangeContains")
operator fun ClosedRange<Byte>.contains(value: Double): Boolean
@JvmName(name = "byteRangeContains")
operator fun ClosedRange<Byte>.contains(value: Float): Boolean
@JvmName(name = "byteRangeContains")
operator fun ClosedRange<Byte>.contains(value: Int): Boolean
@JvmName(name = "byteRangeContains")
operator fun ClosedRange<Byte>.contains(value: Long): Boolean
@JvmName(name = "byteRangeContains")
operator fun ClosedRange<Byte>.contains(value: Short): Boolean
@JvmName(name = "doubleRangeContains")
operator fun ClosedRange<Double>.contains(value: Byte): Boolean
@JvmName(name = "doubleRangeContains")
operator fun ClosedRange<Double>.contains(value: Float): Boolean
@JvmName(name = "doubleRangeContains")
operator fun ClosedRange<Double>.contains(value: Int): Boolean
@JvmName(name = "doubleRangeContains")
operator fun ClosedRange<Double>.contains(value: Long): Boolean
@JvmName(name = "doubleRangeContains")
operator fun ClosedRange<Double>.contains(value: Short): Boolean
@JvmName(name = "floatRangeContains")
operator fun ClosedRange<Float>.contains(value: Byte): Boolean
@JvmName(name = "floatRangeContains")
operator fun ClosedRange<Float>.contains(value: Double): Boolean
@JvmName(name = "floatRangeContains")
operator fun ClosedRange<Float>.contains(value: Int): Boolean
@JvmName(name = "floatRangeContains")
operator fun ClosedRange<Float>.contains(value: Long): Boolean
@JvmName(name = "floatRangeContains")
operator fun ClosedRange<Float>.contains(value: Short): Boolean
@JvmName(name = "intRangeContains")
operator fun ClosedRange<Int>.contains(value: Byte): Boolean
@JvmName(name = "intRangeContains")
operator fun ClosedRange<Int>.contains(value: Double): Boolean
@JvmName(name = "intRangeContains")
operator fun ClosedRange<Int>.contains(value: Float): Boolean
@JvmName(name = "intRangeContains")
operator fun ClosedRange<Int>.contains(value: Long): Boolean
@JvmName(name = "intRangeContains")
operator fun ClosedRange<Int>.contains(value: Short): Boolean
@JvmName(name = "longRangeContains")
operator fun ClosedRange<Long>.contains(value: Byte): Boolean
@JvmName(name = "longRangeContains")
operator fun ClosedRange<Long>.contains(value: Double): Boolean
@JvmName(name = "longRangeContains")
operator fun ClosedRange<Long>.contains(value: Float): Boolean
@JvmName(name = "longRangeContains")
operator fun ClosedRange<Long>.contains(value: Int): Boolean
@JvmName(name = "longRangeContains")
operator fun ClosedRange<Long>.contains(value: Short): Boolean
@JvmName(name = "shortRangeContains")
operator fun ClosedRange<Short>.contains(value: Byte): Boolean
@JvmName(name = "shortRangeContains")
operator fun ClosedRange<Short>.contains(value: Double): Boolean
@JvmName(name = "shortRangeContains")
operator fun ClosedRange<Short>.contains(value: Float): Boolean
@JvmName(name = "shortRangeContains")
operator fun ClosedRange<Short>.contains(value: Int): Boolean
@JvmName(name = "shortRangeContains")
operator fun ClosedRange<Short>.contains(value: Long): Boolean

Checks if the specified value belongs to this range.

Since Kotlin 1.0
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fun <T> Iterable<T>.count(): Int

Returns the number of elements in this collection.

Since Kotlin 1.0
inline fun <T> Iterable<T>.count(predicate: (T) -> Boolean): Int

Returns the number of elements matching the given predicate.

Since Kotlin 1.0
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fun <T> Iterable<T>.distinct(): List<T>

Returns a list containing only distinct elements from the given collection.

Since Kotlin 1.0
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inline 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.

Since Kotlin 1.0
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fun <T> Iterable<T>.drop(n: Int): List<T>

Returns a list containing all elements except first n elements.

Since Kotlin 1.0
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inline fun <T> Iterable<T>.dropWhile(predicate: (T) -> Boolean): List<T>

Returns a list containing all elements except first elements that satisfy the given predicate.

Since Kotlin 1.0
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fun <T> Iterable<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 collection.

Since Kotlin 1.0
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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.

Since Kotlin 1.0
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fun <T> Iterable<T>.elementAtOrNull(index: Int): T?

Returns an element at the given index or null if the index is out of bounds of this collection.

Since Kotlin 1.0
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open operator override fun equals(other: Any?): Boolean
Since Kotlin 1.1
open operator override fun equals(other: Any?): Boolean
Since Kotlin 1.0
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inline fun <T> Iterable<T>.filter(predicate: (T) -> Boolean): List<T>

Returns a list containing only elements matching the given predicate.

Since Kotlin 1.0
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inline fun <T> Iterable<T>.filterIndexed(predicate: (index: Int, T) -> Boolean): List<T>

Returns a list containing only elements matching the given predicate.

Since Kotlin 1.0
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inline 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.

Since Kotlin 1.0
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inline fun <R> Iterable<*>.filterIsInstance(): List<R>

Returns a list containing all elements that are instances of specified type parameter R.

Since Kotlin 1.0
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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inline 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.

Since Kotlin 1.0
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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inline fun <T> Iterable<T>.filterNot(predicate: (T) -> Boolean): List<T>

Returns a list containing all elements not matching the given predicate.

Since Kotlin 1.0
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fun <T : Any> Iterable<T?>.filterNotNull(): List<T>

Returns a list containing all elements that are not null.

Since Kotlin 1.0
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fun <C : MutableCollection<in T>, T : Any> Iterable<T?>.filterNotNullTo(destination: C): C

Appends all elements that are not null to the given destination.

Since Kotlin 1.0
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inline 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.

Since Kotlin 1.0
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inline 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.

Since Kotlin 1.0
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inline fun <T> Iterable<T>.find(predicate: (T) -> Boolean): T?

Returns the first element matching the given predicate, or null if no such element was found.

Since Kotlin 1.0
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inline fun <T> Iterable<T>.findLast(predicate: (T) -> Boolean): T?

Returns the last element matching the given predicate, or null if no such element was found.

Since Kotlin 1.0
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fun <T> Iterable<T>.first(): T

Returns first element.

Since Kotlin 1.0
inline fun <T> Iterable<T>.first(predicate: (T) -> Boolean): T

Returns the first element matching the given predicate.

Since Kotlin 1.0
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fun <T> Iterable<T>.firstOrNull(): T?

Returns the first element, or null if the collection is empty.

Since Kotlin 1.0
inline fun <T> Iterable<T>.firstOrNull(predicate: (T) -> Boolean): T?

Returns the first element matching the given predicate, or null if element was not found.

Since Kotlin 1.0
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inline 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.

Since Kotlin 1.0
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inline 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.

Since Kotlin 1.0
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fun <T> Iterable<Iterable<T>>.flatten(): List<T>

Returns a single list of all elements from all collections in the given collection.

Since Kotlin 1.1
fun <T> Iterable<Iterable<T>>.flatten(): List<T>

Returns a single list of all elements from all collections in the given collection.

Since Kotlin 1.0
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inline 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.

Since Kotlin 1.0
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inline 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.

Since Kotlin 1.0
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inline fun <T> Iterable<T>.forEach(action: (T) -> Unit)

Performs the given action on each element.

Since Kotlin 1.0
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inline fun <T> Iterable<T>.forEachIndexed(action: (index: Int, T) -> Unit)

Performs the given action on each element, providing sequential index with the element.

Since Kotlin 1.0
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inline 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.

Since Kotlin 1.0
inline 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.

Since Kotlin 1.0
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inline 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.

Since Kotlin 1.0
inline 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.

Since Kotlin 1.0
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inline fun <T, K> Iterable<T>.groupingBy(crossinline 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.

Since Kotlin 1.1
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open override fun hashCode(): Int
Since Kotlin 1.1
open override fun hashCode(): Int
Since Kotlin 1.0
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fun <T> Iterable<T>.indexOf(element: T): Int

Returns first index of element, or -1 if the collection does not contain element.

Since Kotlin 1.0
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inline 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.

Since Kotlin 1.0
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inline 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.

Since Kotlin 1.0
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infix fun <T> Iterable<T>.intersect(other: Iterable<T>): Set<T>

Returns a set containing all elements that are contained by both this collection and the specified collection.

Since Kotlin 1.0
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open override fun isEmpty(): Boolean

Checks whether the range is empty.

Since Kotlin 1.1
open override fun isEmpty(): Boolean

Checks whether the range is empty.

Since Kotlin 1.0
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open operator override fun iterator(): IntIterator

Returns an iterator over the elements of this object.

Since Kotlin 1.1
open operator override fun iterator(): IntIterator

Returns an iterator over the elements of this object.

Since Kotlin 1.0
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fun <T, A : Appendable> 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.

Since Kotlin 1.0
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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.

Since Kotlin 1.0
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fun <T> Iterable<T>.last(): T

Returns the last element.

Since Kotlin 1.0
inline fun <T> Iterable<T>.last(predicate: (T) -> Boolean): T

Returns the last element matching the given predicate.

Since Kotlin 1.0
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fun <T> Iterable<T>.lastIndexOf(element: T): Int

Returns last index of element, or -1 if the collection does not contain element.

Since Kotlin 1.0
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fun <T> Iterable<T>.lastOrNull(): T?

Returns the last element, or null if the collection is empty.

Since Kotlin 1.0
inline fun <T> Iterable<T>.lastOrNull(predicate: (T) -> Boolean): T?

Returns the last element matching the given predicate, or null if no such element was found.

Since Kotlin 1.0
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inline 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.

Since Kotlin 1.0
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inline 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.

Since Kotlin 1.0
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inline 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.

Since Kotlin 1.0
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inline 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.

Since Kotlin 1.0
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inline 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.

Since Kotlin 1.0
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inline 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.

Since Kotlin 1.0
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inline 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.

Since Kotlin 1.0
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inline 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.

Since Kotlin 1.0
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fun <T : Comparable<T>> Iterable<T>.max(): T?
Since Kotlin 1.0
fun Iterable<Double>.max(): Double?
fun Iterable<Float>.max(): Float?
Since Kotlin 1.1
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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?
Since Kotlin 1.0
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fun <T : Comparable<T>> Iterable<T>.min(): T?
Since Kotlin 1.0
fun Iterable<Double>.min(): Double?
fun Iterable<Float>.min(): Float?
Since Kotlin 1.1
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inline fun <T, R : Comparable<R>> Iterable<T>.minBy(selector: (T) -> R): T?
Since Kotlin 1.0
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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.

Since Kotlin 1.0
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.

Since Kotlin 1.0
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.

Since Kotlin 1.0
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.

Since Kotlin 1.0
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inline 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.

Since Kotlin 1.0
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fun <T> Iterable<T>.minWith(comparator: Comparator<in T>): T?
Since Kotlin 1.0
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fun <T> Iterable<T>.none(): Boolean

Returns true if the collection has no elements.

Since Kotlin 1.0
inline fun <T> Iterable<T>.none(predicate: (T) -> Boolean): Boolean

Returns true if no elements match the given predicate.

Since Kotlin 1.0
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inline 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 true, while second list contains elements for which predicate yielded false.

Since Kotlin 1.0
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operator fun <T> Iterable<T>.plus(element: T): List<T>

Returns a list containing all elements of the original collection and then the given element.

Since Kotlin 1.0
operator fun <T> Iterable<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.

Since Kotlin 1.0
operator fun <T> Iterable<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.

Since Kotlin 1.0
operator fun <T> Iterable<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.

Since Kotlin 1.0
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inline fun <T> Iterable<T>.plusElement(element: T): List<T>

Returns a list containing all elements of the original collection and then the given element.

Since Kotlin 1.0
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inline 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.

Since Kotlin 1.0
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inline 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.

Since Kotlin 1.0
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fun <T : Any> Iterable<T?>.requireNoNulls(): Iterable<T>

Returns an original collection containing all the non-null elements, throwing an IllegalArgumentException if there are any null elements.

Since Kotlin 1.0
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fun <T> Iterable<T>.reversed(): List<T>

Returns a list with elements in reversed order.

Since Kotlin 1.0
fun IntProgression.reversed(): IntProgression

Returns a progression that goes over the same range in the opposite direction with the same step.

Since Kotlin 1.0
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fun <T> Iterable<T>.single(): T

Returns the single element, or throws an exception if the collection is empty or has more than one element.

Since Kotlin 1.0
inline 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.

Since Kotlin 1.0
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fun <T> Iterable<T>.singleOrNull(): T?

Returns single element, or null if the collection is empty or has more than one element.

Since Kotlin 1.0
inline fun <T> Iterable<T>.singleOrNull(predicate: (T) -> Boolean): T?

Returns the single element matching the given predicate, or null if element was not found or more than one element was found.

Since Kotlin 1.0
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fun <T : Comparable<T>> Iterable<T>.sorted(): List<T>

Returns a list of all elements sorted according to their natural sort order.

Since Kotlin 1.0
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inline fun <T, R : Comparable<R>> Iterable<T>.sortedBy(crossinline 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.

Since Kotlin 1.0
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inline fun <T, R : Comparable<R>> Iterable<T>.sortedByDescending(crossinline 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.

Since Kotlin 1.0
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fun <T : Comparable<T>> Iterable<T>.sortedDescending(): List<T>

Returns a list of all elements sorted descending according to their natural sort order.

Since Kotlin 1.0
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fun <T> Iterable<T>.sortedWith(comparator: Comparator<in T>): List<T>

Returns a list of all elements sorted according to the specified comparator.

Since Kotlin 1.0
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infix fun IntProgression.step(step: Int): IntProgression

Returns a progression that goes over the same range with the given step.

Since Kotlin 1.0
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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.

Since Kotlin 1.0
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@JvmName(name = "sumOfByte")
fun Iterable<Byte>.sum(): Int
@JvmName(name = "sumOfDouble")
fun Iterable<Double>.sum(): Double
@JvmName(name = "sumOfFloat")
fun Iterable<Float>.sum(): Float
@JvmName(name = "sumOfInt")
fun Iterable<Int>.sum(): Int
@JvmName(name = "sumOfLong")
fun Iterable<Long>.sum(): Long
@JvmName(name = "sumOfShort")
fun Iterable<Short>.sum(): Int

Returns the sum of all elements in the collection.

Since Kotlin 1.0
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inline 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.

Since Kotlin 1.0
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inline 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.

Since Kotlin 1.0
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fun <T> Iterable<T>.take(n: Int): List<T>

Returns a list containing first n elements.

Since Kotlin 1.0
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inline fun <T> Iterable<T>.takeWhile(predicate: (T) -> Boolean): List<T>

Returns a list containing first elements satisfying the given predicate.

Since Kotlin 1.0
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fun <T, C : MutableCollection<in T>> Iterable<T>.toCollection(destination: C): C

Appends all elements to the given destination collection.

Since Kotlin 1.0
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fun <T> Iterable<T>.toHashSet(): HashSet<T>

Returns a new HashSet of all elements.

Since Kotlin 1.0
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fun <T> Iterable<T>.toList(): List<T>

Returns a List containing all elements.

Since Kotlin 1.0
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fun <K, V> Iterable<Pair<K, V>>.toMap(): Map<K, V>

Returns a new map containing all key-value pairs from the given collection of pairs.

Since Kotlin 1.1
fun <K, V, M : MutableMap<in K, in V>> Iterable<Pair<K, V>>.toMap(destination: M): M

Populates and returns the destination mutable map with key-value pairs from the given collection of pairs.

Since Kotlin 1.1
fun <K, V> Iterable<Pair<K, V>>.toMap(): Map<K, V>

Returns a new map containing all key-value pairs from the given collection of pairs.

Since Kotlin 1.0
fun <K, V, M : MutableMap<in K, in V>> Iterable<Pair<K, V>>.toMap(destination: M): M

Populates and returns the destination mutable map with key-value pairs from the given collection of pairs.

Since Kotlin 1.0
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fun <T> Iterable<T>.toMutableList(): MutableList<T>

Returns a new MutableList filled with all elements of this collection.

Since Kotlin 1.0
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fun <T> Iterable<T>.toMutableSet(): MutableSet<T>

Returns a new MutableSet containing all distinct elements from the given collection.

Since Kotlin 1.0
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fun <T> Iterable<T>.toSet(): Set<T>

Returns a Set of all elements.

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>

Returns a new SortedSet of all elements.

Since Kotlin 1.0
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open override fun toString(): String
Since Kotlin 1.1
open override fun toString(): String
Since Kotlin 1.0
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infix fun <T> Iterable<T>.union(other: Iterable<T>): Set<T>

Returns a set containing all distinct elements from both collections.

Since Kotlin 1.0
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fun <T, R> Iterable<Pair<T, R>>.unzip(): Pair<List<T>, List<R>>

Returns a pair of lists, where first list is built from the first values of each pair from this collection, second list is built from the second values of each pair from this collection.

Since Kotlin 1.1
fun <T, R> Iterable<Pair<T, R>>.unzip(): Pair<List<T>, List<R>>

Returns a pair of lists, where first list is built from the first values of each pair from this collection, second list is built from the second values of each pair from this collection.

Since Kotlin 1.0
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fun <T> Iterable<T>.withIndex(): Iterable<IndexedValue<T>>

Returns a lazy Iterable that wraps each element of the original collection into an IndexedValue containing the index of that element and the element itself.

Since Kotlin 1.0
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infix fun <T, R> Iterable<T>.zip(other: Array<out R>): List<Pair<T, R>>

Returns a list of pairs built from the elements of this collection and the other array with the same index. The returned list has length of the shortest collection.

Since Kotlin 1.0
infix fun <T, R> Iterable<T>.zip(other: Iterable<R>): List<Pair<T, R>>

Returns a list of pairs built from the elements of this collection and other collection with the same index. The returned list has length of the shortest collection.

Since Kotlin 1.0
inline fun <T, R, V> Iterable<T>.zip(other: Array<out R>, transform: (a: T, b: R) -> V): List<V>

Returns a list of values built from the elements of this collection and the other array with the same index using the provided transform function applied to each pair of elements. The returned list has length of the shortest collection.

Since Kotlin 1.0
inline 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 the elements of this collection and the other collection with the same index using the provided transform function applied to each pair of elements. The returned list has length of the shortest collection.

Since Kotlin 1.0