Learning Kotlin: Using 'while loops', IntRanges, and the 'repeat' Function

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Another Learning Kotlin tutorial for beginners. Helping you learn Kotlin 1 small tutorial at a time.

In this Kotlin tutorial, you learn how to write 'while loops' and 'do while loops' . You'll see how to use the 'repeat' function to quickly iterate N number of times, and you'll learn how you can use IntRanges, the 'until' and 'downTo' infix functions, and the 'step' function to control how 'for loops' operate.

0:47 - Repeat function
3:06 - for loop using 'until'
4:00 - for loop using '..' range shorthand
5:39 - for loop using 'step' function to control how counter is incremented
6:40 - for loop using 'downTo' function to iterate backwards
8:35 - While loop
9:35 - Do-While loop

#AndroidDev #AndroidDeveloper #Kotlin

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Questions about iteration in Kotlin? Let me know in the comments 🙂

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Were any of these new to you? I was recently reminded that using "until" is non-inclusive which makes it useful when looking up elements in a collection because you don't have to subtract 1 from the size of the collection.

goobar
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For me the big disadvantage of "repeat" is that you can't "break" it or somehow finish before the all iterations happened

BelokonRoman