In this guide, we will learn how to use for loop. forEachIndexed Common JVM JS Native 1.0 inline fun Array.forEachIndexed( action: (index: Int, T) -> Unit) (source) inline fun ByteArray.forEachIndexed( action: (index: Int, Byte) -> Unit) (source) inline fun ShortArray.forEachIndexed( action: (index: Int, Short) -> Unit) (source) inline fun IntArray.

However, there isn't always such a neat solution. The for loop in Kotlin is used to iterate or cycle though the elements of array, ranges, collections etc.

As Vadik's answer shows, in this particular case the indexes both take the same values, so only one is needed that leads to a nice simplification of the code, with a neat Kotlin implementation. The index of the for loop is read-only because changing it breaks the expectation of the reader and is much less maintainable. 7.a) 'Hello World' gets printed 5th time 7.b) Updation is done. This codelab discusses how to work with multiple values in your code, and introduces a variety of data structures, including arrays, lists, sets, and maps.

For loop with index kotlin