Package kotlin.ranges

Ranges, Progressions and related top-level and extension functions.

Types

Common
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1.0

CharProgression

A progression of values of type Char.

open class CharProgression : Iterable<Char>
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1.0

CharRange

A range of values of type Char.

class CharRange : CharProgression, ClosedRange<Char>
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1.0

ClosedFloatingPointRange

Represents a range of floating point numbers. Extends ClosedRange interface providing custom operation lessThanOrEquals for comparing values of range domain type.

interface ClosedFloatingPointRange<T : Comparable<T>> : 
    ClosedRange<T>
Common
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1.0

ClosedRange

Represents a range of values (for example, numbers or characters). See the Kotlin language documentation for more information.

interface ClosedRange<T : Comparable<T>>
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1.0

IntProgression

A progression of values of type Int.

open class IntProgression : Iterable<Int>
Common
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1.0

IntRange

A range of values of type Int.

class IntRange : IntProgression, ClosedRange<Int>
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1.0

LongProgression

A progression of values of type Long.

open class LongProgression : Iterable<Long>
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1.0

LongRange

A range of values of type Long.

class LongRange : LongProgression, ClosedRange<Long>
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1.0

UIntProgression

A progression of values of type UInt.

open class UIntProgression : Iterable<UInt>
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1.0

UIntRange

A range of values of type UInt.

class UIntRange : UIntProgression, ClosedRange<UInt>
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1.0

ULongProgression

A progression of values of type ULong.

open class ULongProgression : Iterable<ULong>
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1.0

ULongRange

A range of values of type ULong.

class ULongRange : ULongProgression, ClosedRange<ULong>

Functions

Common
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JS
Native
1.2

coerceAtLeast

Ensures that this value is not less than the specified minimumValue.

fun <T : Comparable<T>> T.coerceAtLeast(minimumValue: T): T
fun Byte.coerceAtLeast(minimumValue: Byte): Byte
fun Short.coerceAtLeast(minimumValue: Short): Short
fun Int.coerceAtLeast(minimumValue: Int): Int
fun Long.coerceAtLeast(minimumValue: Long): Long
fun Float.coerceAtLeast(minimumValue: Float): Float
fun Double.coerceAtLeast(minimumValue: Double): Double
Common
JVM
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1.2

coerceAtMost

Ensures that this value is not greater than the specified maximumValue.

fun <T : Comparable<T>> T.coerceAtMost(maximumValue: T): T
fun Byte.coerceAtMost(maximumValue: Byte): Byte
fun Short.coerceAtMost(maximumValue: Short): Short
fun Int.coerceAtMost(maximumValue: Int): Int
fun Long.coerceAtMost(maximumValue: Long): Long
fun Float.coerceAtMost(maximumValue: Float): Float
fun Double.coerceAtMost(maximumValue: Double): Double
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1.0

coerceIn

Ensures that this value lies in the specified range minimumValue..maximumValue.

fun <T : Comparable<T>> T.coerceIn(
    minimumValue: T?,
    maximumValue: T?
): T
fun Byte.coerceIn(
    minimumValue: Byte,
    maximumValue: Byte
): Byte
fun Short.coerceIn(
    minimumValue: Short,
    maximumValue: Short
): Short
fun Int.coerceIn(minimumValue: Int, maximumValue: Int): Int
fun Long.coerceIn(
    minimumValue: Long,
    maximumValue: Long
): Long
fun Float.coerceIn(
    minimumValue: Float,
    maximumValue: Float
): Float
fun Double.coerceIn(
    minimumValue: Double,
    maximumValue: Double
): Double

Ensures that this value lies in the specified range.

fun <T : Comparable<T>> T.coerceIn(
    range: ClosedFloatingPointRange<T>
): T
fun <T : Comparable<T>> T.coerceIn(range: ClosedRange<T>): T
fun Int.coerceIn(range: ClosedRange<Int>): Int
fun Long.coerceIn(range: ClosedRange<Long>): Long
Common
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1.0

contains

Returns true if this range contains the specified element.

operator fun IntRange.contains(element: Int?): Boolean
operator fun LongRange.contains(element: Long?): Boolean
operator fun CharRange.contains(element: Char?): Boolean
operator fun UIntRange.contains(element: UInt?): Boolean
operator fun ULongRange.contains(element: ULong?): Boolean

Checks if the specified value belongs to this range.

operator fun ClosedRange<Int>.contains(value: Byte): Boolean
operator fun ClosedRange<Long>.contains(value: Byte): Boolean
operator fun ClosedRange<Short>.contains(
    value: Byte
): Boolean
operator fun ClosedRange<Double>.contains(
    value: Byte
): Boolean
operator fun ClosedRange<Float>.contains(
    value: Byte
): Boolean
operator fun ClosedRange<Int>.contains(
    value: Double
): Boolean
operator fun ClosedRange<Long>.contains(
    value: Double
): Boolean
operator fun ClosedRange<Byte>.contains(
    value: Double
): Boolean
operator fun ClosedRange<Short>.contains(
    value: Double
): Boolean
operator fun ClosedRange<Float>.contains(
    value: Double
): Boolean
operator fun ClosedRange<Int>.contains(value: Float): Boolean
operator fun ClosedRange<Long>.contains(
    value: Float
): Boolean
operator fun ClosedRange<Byte>.contains(
    value: Float
): Boolean
operator fun ClosedRange<Short>.contains(
    value: Float
): Boolean
operator fun ClosedRange<Double>.contains(
    value: Float
): Boolean
operator fun ClosedRange<Long>.contains(value: Int): Boolean
operator fun ClosedRange<Byte>.contains(value: Int): Boolean
operator fun ClosedRange<Short>.contains(value: Int): Boolean
operator fun ClosedRange<Double>.contains(
    value: Int
): Boolean
operator fun ClosedRange<Float>.contains(value: Int): Boolean
operator fun ClosedRange<Int>.contains(value: Long): Boolean
operator fun ClosedRange<Byte>.contains(value: Long): Boolean
operator fun ClosedRange<Short>.contains(
    value: Long
): Boolean
operator fun ClosedRange<Double>.contains(
    value: Long
): Boolean
operator fun ClosedRange<Float>.contains(
    value: Long
): Boolean
operator fun ClosedRange<Int>.contains(value: Short): Boolean
operator fun ClosedRange<Long>.contains(
    value: Short
): Boolean
operator fun ClosedRange<Byte>.contains(
    value: Short
): Boolean
operator fun ClosedRange<Double>.contains(
    value: Short
): Boolean
operator fun ClosedRange<Float>.contains(
    value: Short
): Boolean

Returns true if this iterable range contains the specified element.

operator fun <T : Any, R> R.contains(
    element: T?
): Boolean where R : Iterable<T>, R : ClosedRange<T>
Common
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1.0

downTo

Returns a progression from this value down to the specified to value with the step -1.

infix fun Int.downTo(to: Byte): IntProgression
infix fun Long.downTo(to: Byte): LongProgression
infix fun Byte.downTo(to: Byte): IntProgression
infix fun Short.downTo(to: Byte): IntProgression
infix fun Char.downTo(to: Char): CharProgression
infix fun Int.downTo(to: Int): IntProgression
infix fun Long.downTo(to: Int): LongProgression
infix fun Byte.downTo(to: Int): IntProgression
infix fun Short.downTo(to: Int): IntProgression
infix fun Int.downTo(to: Long): LongProgression
infix fun Long.downTo(to: Long): LongProgression
infix fun Byte.downTo(to: Long): LongProgression
infix fun Short.downTo(to: Long): LongProgression
infix fun Int.downTo(to: Short): IntProgression
infix fun Long.downTo(to: Short): LongProgression
infix fun Byte.downTo(to: Short): IntProgression
infix fun Short.downTo(to: Short): IntProgression
infix fun UByte.downTo(to: UByte): UIntProgression
infix fun UInt.downTo(to: UInt): UIntProgression
infix fun ULong.downTo(to: ULong): ULongProgression
infix fun UShort.downTo(to: UShort): UIntProgression
Common
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1.0

random

Returns a random element from this range.

fun IntRange.random(): Int
fun LongRange.random(): Long
fun CharRange.random(): Char
fun UIntRange.random(): UInt
fun ULongRange.random(): ULong

Returns a random element from this range using the specified source of randomness.

fun IntRange.random(random: Random): Int
fun LongRange.random(random: Random): Long
fun CharRange.random(random: Random): Char
fun UIntRange.random(random: Random): UInt
fun ULongRange.random(random: Random): ULong

rangeTo

Common
JVM
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Native
1.2

Creates a range from this Comparable value to the specified that value.

operator fun <T : Comparable<T>> T.rangeTo(
    that: T
): ClosedRange<T>
Common
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1.0

Creates a range from this Double value to the specified that value.

operator fun Double.rangeTo(
    that: Double
): ClosedFloatingPointRange<Double>
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1.0

Creates a range from this Float value to the specified that value.

operator fun Float.rangeTo(
    that: Float
): ClosedFloatingPointRange<Float>
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1.0

reversed

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

Common
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1.0

step

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

infix fun IntProgression.step(step: Int): IntProgression
infix fun LongProgression.step(step: Long): LongProgression
infix fun CharProgression.step(step: Int): CharProgression
infix fun UIntProgression.step(step: Int): UIntProgression
infix fun ULongProgression.step(step: Long): ULongProgression
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1.0

until

Returns a range from this value up to but excluding the specified to value.

infix fun Int.until(to: Byte): IntRange
infix fun Long.until(to: Byte): LongRange
infix fun Byte.until(to: Byte): IntRange
infix fun Short.until(to: Byte): IntRange
infix fun Char.until(to: Char): CharRange
infix fun Int.until(to: Int): IntRange
infix fun Long.until(to: Int): LongRange
infix fun Byte.until(to: Int): IntRange
infix fun Short.until(to: Int): IntRange
infix fun Int.until(to: Long): LongRange
infix fun Long.until(to: Long): LongRange
infix fun Byte.until(to: Long): LongRange
infix fun Short.until(to: Long): LongRange
infix fun Int.until(to: Short): IntRange
infix fun Long.until(to: Short): LongRange
infix fun Byte.until(to: Short): IntRange
infix fun Short.until(to: Short): IntRange
infix fun UByte.until(to: UByte): UIntRange
infix fun UInt.until(to: UInt): UIntRange
infix fun ULong.until(to: ULong): ULongRange
infix fun UShort.until(to: UShort): UIntRange