---
title: What are err, req and res?
date: 2024-08-16
permalink: daily/2024/08/16/what-are-err--req-and-res
tags:
  - software-development
  - clean-code
cta: ~
snippet: |
  What are err, req and res?
---

Today, I was at another School of Code hackathon event, mentoring a team of three Developers as they planned and built an application within a day.

During the day, we looked at some example documentation that included variable names like `err`, `req`, and `res`.

I don't like short variable names like this.

I'd suggest calling them what they are - `error`, `request` and `response`.

This makes the code clearer and easier to read and understand, particularly if you aren't using types and need additional context.

Readability is important as [people read more code than they write][0].

[0]: {{site.url}}/daily/2024/08/07/people-read-more-code-than-they-write