kotlin-stdlib/kotlin.collections/withIndex

withIndex

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

fun <T> Iterable<T>.withIndex(): Iterable<IndexedValue<T>>(source)

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.

@ExperimentalUnsignedTypes

fun UIntArray.withIndex(): Iterable<IndexedValue<UInt>>(source)

@ExperimentalUnsignedTypes

fun ULongArray.withIndex(): Iterable<IndexedValue<ULong>>(source)

@ExperimentalUnsignedTypes

fun UByteArray.withIndex(): Iterable<IndexedValue<UByte>>(source)

@ExperimentalUnsignedTypes

fun UShortArray.withIndex(): Iterable<IndexedValue<UShort>>(source)

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

Since Kotlin

1.3

fun <T> Iterator<T>.withIndex(): Iterator<IndexedValue<T>>(source)

Returns an Iterator that wraps each element produced by the original iterator into an IndexedValue containing the index of that element and the element itself.

Samples



import java.util.*
fun main() { 
   //sampleStart 
   val iterator = ('a'..'c').iterator()

for ((index, value) in iterator.withIndex()) {
    println("The element at $index is $value")
} 
   //sampleEnd
}