Scope Functions: with(), run() vs. with()

Introducing `with()`, and how to use it to clean up code. Explaining once and for all what the difference between `with()` & `run()` is, when each should be used, and how the explanation in the official documentation leaves much to be desired.

Gabriel Shanahan

Published in

The Kotlin Primer

4 min readOct 15, 2022

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THE CURRENT VERSION OF THIS ARTICLE IS PUBLISHED HERE.
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Tags: #FUNDAMENTAL CONCEPT
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.

With

The definition of with is essentially:

Scope Functions: with(), run() vs. with()

Introducing with(), and how to use it to clean up code. Explaining once and for all what the difference between with() & run() is, when each should be used, and how the explanation in the official documentation leaves much to be desired.

With

Written by Gabriel Shanahan

Introducing `with()`, and how to use it to clean up code. Explaining once and for all what the difference between `with()` & `run()` is, when each should be used, and how the explanation in the official documentation leaves much to be desired.