# Introducing Rety: live coding, without the stress

DevFeed: [Introducing Rety: live coding, without the stress](<https://devfeed.tech/articles/introducing-rety-live-coding-without-the-stress-52139.md>)

Original publisher: [Read original article](<https://lea.verou.me/2022/07/rety/>)

Author: Lea Verou

Published: 2022-07-13T00:00:00Z

Content type: article

Language: en

Sources: [Lea Verou's blog](<https://devfeed.tech/sources/lea-verou-s-blog.md>)

Topics: [Snippet](<https://devfeed.tech/topics/snippet.md>), [Tool](<https://devfeed.tech/topics/tool.md>), [coding](<https://devfeed.tech/topics/coding.md>), [Demo](<https://devfeed.tech/topics/demo.md>), [modern web development](<https://devfeed.tech/topics/modern-web-development.md>)

Tags: [blog](<https://devfeed.tech/tags/blog.md>), [coding](<https://devfeed.tech/tags/coding.md>), [demo](<https://devfeed.tech/tags/demo.md>), [js](<https://devfeed.tech/tags/js.md>), [news](<https://devfeed.tech/tags/news.md>), [programming](<https://devfeed.tech/tags/programming.md>), [releases](<https://devfeed.tech/tags/releases.md>), [snippet](<https://devfeed.tech/tags/snippet.md>), [speaking](<https://devfeed.tech/tags/speaking.md>), [tool](<https://devfeed.tech/tags/tool.md>)

## AI overview

The author introduces Rety, a tool for recording and replaying live coding so demonstrations remain useful to students and future instructors.

## Source excerpt

I recently spoke at CSS Day in Amsterdam. It was only my second f2f talk after the pandemic. It went down really well, both in person, and recently that the video was released: https://www.youtube.com/watch?v=ZuZizqDF4q8 Here is a sample of tweets about it that made me particularly warm and fuzzy inside: https://twitter.com/CSSDayConf/status/1542778793219301376 https://twitter.com/jonpearse/status/1542490268322103296 https://twitter.com/StuRobson/status/1542461048791384066 https://twitter.com/vlh/status/1544483583544463361 https://twitter.com/pawelgrzybek/status/1546861605824126980 https://twitter.com/parker\_codes/status/1547055116221497344 https://twitter.com/polarbirke/status/1547202631315214338 https://twitter.com/unistyler/status/1544619175796252672 There's a lot more where these came from too. This was not just my second post-pandemic talk, but my first talk using Rety, which is what this post is about. As you may know, I love live coding as a teaching tool, and over the years it has become part of my trademark speaking style. When combined with some kind of interactive preview, it allows the speaker to demonstrate not only the final state of a coding snippet, but also how you get there, and what the intermediate results are. Live coding is to programming what a blackboard is to math or physics. But it does create a unique challenge: My live coded slides don't make sense without me. This may be acceptable for a conference talk, which is usually recorded, but not in other contexts, such as teaching a university course, where all instructors need to be able to teach all lectures, and students need to be able to quickly refer to examples shown. Back in the fall of 2021, when we were preparing for the second iteration of our course, Design for the Web: Languages and User Interfaces, this came up as a pressing issue. The current state of the course required me to be there to teach my lectures, and this may well be the last year I teach it, since I'm finishing up my