indices is a val that returns the range of valid character indices for a char sequence.

In this tutorial, we will learn four different ways to do it. Actually, there are different ways to iterate through the characters of a string in kotlin. We will iterate through each character of a string and print out its value to the user. The program will take the string as input from the user and print out all characters of it one by one. Println('This developer with number $i rocks: $')įor ((index, value) in names.In this kotlin programming tutorial, we will learn how to print each character of a string in kotlin. The in keyword can also be used to check if a value is in a given range!Īnd if you need an index inside your loop, Kotlin allows you to do this in several ways: This syntax can be found in many recent languages, like Swift, for example… The for loop is now used in the form of in. ('This developer rocks: ' + name) Įn Kotlin, celle-ci est d’ailleurs devenue beaucoup plus lisible : val names = listOf('Jake Wharton', 'Joe Birch', 'Robert Martin') Anyone? Well, that’s to be expected! We have all used this type of loop at least once: List names = Arrays.asList('Jake Wharton', 'Joe Birch', 'Robert Martin') For Once…Īnyone who has never used the for loop in Java, please stand up.

Since Kotlin doesn’t bring any special improvement to this way of looping, we’ll skip it. In Kotlin, we have exactly the same thing: // While You probably know the while loop in Java, used to go through a list as long as the condition remains unmet. So this chapter shouldn’t confuse you too much! As Far As Possible If there’s something that hasn’t really changed in Kotlin, it’s the way we loop.

Kotlin for each with index