val <T> Array<out T>.indices: IntRange

val ByteArray.indices: IntRange

val ShortArray.indices: IntRange

val IntArray.indices: IntRange

val LongArray.indices: IntRange

val FloatArray.indices: IntRange

val DoubleArray.indices: IntRange

val BooleanArray.indices: IntRange

val CharArray.indices: IntRange

Returns the range of valid indices for the array.

val Collection<*>.indices: IntRange

Returns an IntRange of the valid indices for this collection.

import kotlin.test.*

fun main(args: Array<String>) {
//sampleStart
val empty = emptyList<Any>()
println("empty.indices.isEmpty() is ${empty.indices.isEmpty()}") // true
val collection = listOf('a', 'b', 'c')
println(collection.indices) // 0..2
//sampleEnd
}