kotlin-stdlib/kotlin.collections/randomOrNull

randomOrNull

inline fun <T> Array<out T>.randomOrNull(): T?(source)
inline fun ByteArray.randomOrNull(): Byte?(source)
inline fun ShortArray.randomOrNull(): Short?(source)
inline fun IntArray.randomOrNull(): Int?(source)
inline fun LongArray.randomOrNull(): Long?(source)
inline fun FloatArray.randomOrNull(): Float?(source)
inline fun DoubleArray.randomOrNull(): Double?(source)
inline fun BooleanArray.randomOrNull(): Boolean?(source)
inline fun CharArray.randomOrNull(): Char?(source)
@ExperimentalUnsignedTypes
inline fun UIntArray.randomOrNull(): UInt?(source)
@ExperimentalUnsignedTypes
inline fun ULongArray.randomOrNull(): ULong?(source)
@ExperimentalUnsignedTypes
inline fun UByteArray.randomOrNull(): UByte?(source)
@ExperimentalUnsignedTypes
inline fun UShortArray.randomOrNull(): UShort?(source)

Returns a random element from this array, or null if this array is empty.

Since Kotlin

1.4
fun <T> Array<out T>.randomOrNull(random: Random): T?(source)
fun ByteArray.randomOrNull(random: Random): Byte?(source)
fun ShortArray.randomOrNull(random: Random): Short?(source)
fun IntArray.randomOrNull(random: Random): Int?(source)
fun LongArray.randomOrNull(random: Random): Long?(source)
fun FloatArray.randomOrNull(random: Random): Float?(source)
fun DoubleArray.randomOrNull(random: Random): Double?(source)
fun BooleanArray.randomOrNull(random: Random): Boolean?(source)
fun CharArray.randomOrNull(random: Random): Char?(source)
@ExperimentalUnsignedTypes
fun UIntArray.randomOrNull(random: Random): UInt?(source)
@ExperimentalUnsignedTypes
fun ULongArray.randomOrNull(random: Random): ULong?(source)
@ExperimentalUnsignedTypes
fun UByteArray.randomOrNull(random: Random): UByte?(source)
@ExperimentalUnsignedTypes
fun UShortArray.randomOrNull(random: Random): UShort?(source)

Returns a random element from this array using the specified source of randomness, or null if this array is empty.

Since Kotlin

1.4
inline fun <T> Collection<T>.randomOrNull(): T?(source)

Returns a random element from this collection, or null if this collection is empty.

Since Kotlin

1.4
fun <T> Collection<T>.randomOrNull(random: Random): T?(source)

Returns a random element from this collection using the specified source of randomness, or null if this collection is empty.

Since Kotlin

1.4