Ranges

Ranges in Kotlin, with a quick mention of the in operator, and associated infix functions — until, downTo and step

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THE CURRENT VERSION OF THIS ARTICLE IS PUBLISHED HERE.

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Tags: #FYI

This article is part of the Kotlin Primer, an opinionated guide to the Kotlin language, which is indented to help facilitate Kotlin adoption inside Java-centric organizations. It was originally written as an organizational learning resource for Etnetera a.s. and I would like to express my sincere gratitude for their support.

It is recommended to read the Introduction before moving on. Check out the Table of Contents for all articles.

There is a set of tools for working with ranges in Kotlin. Let’s take a quick look at them.

1. Iterates over a range starting from 0 up to 3 (inclusive). Like for (i=0; i<=3; ++i)…