@JohnElmLabs profile picture
John Elm Labs @JohnElmLabs
Joined March 2023
  • Tweets 200
  • Following 70
  • Followers 273
18 Photos and videos
I wanna see the global Git commit graph overlaid on Claude’s uptime, I bet it’s a 1:1 correlation
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I’ve always felt like for simple job / function retry there was a lighter dep. you could bring than Oban I think I can finally vibe code it now All OTP primitives and file system….here goes nothin
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I don't even use my editor anymore. It's just Claude and the GitHub diff window
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AI is amazing at writing code. Amazing. It's awful, and I mean awful, at organizing code It makes sense when you know AI is just a _really good_ next word predictor
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Codebase architecture is a skill that is never taught and yet it's now more valuable than ever.
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John Elm Labs retweeted
Elixir Radar@elixir_radar
26 Nov 2025
Elixir Radar issue 491 is out! 📣 You can read it here: buff.ly/alySdZq This issue comes with content from @JohnElmLabs @AtomikSnowman @mrpopov_com @jaguar0ndi , Stuart Page and Peter Ullrich. Thank you! #ElixirLang #MyElixirStatus
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Anybody gotten a decent system to "compose" claude slash commands? Something like "do feature [x]. /test /format /commit /open-pr #MyElixirStatus
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TOON is premature optimization
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HexDocs over swagger for public REST api documentation? Good Idea? bad idea? #MyElixirStatus
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The Top 3 LiveView Form Mistakes (and how to fix them) Prevent poor UX, brittle systems, and impossible states by using these 3 strategies. johnelmlabs.com/posts/top-3-… #MyElixirStatus

The Top 3 LiveView Form Mistakes (And How to Fix Them)

After 5 years of writing LiveView forms in production, these are the most common—and most painful—mistakes I see teams make with forms and changesets. Learn how to avoid the traps that come from...

johnelmlabs.com
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Claude fails to add some code comments and loses its mind 😭
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Does anybody else's macOS updates seem to nuke their local Postgres installs into some sort of black hole? I swear every time I get a MacOS update I have to re-install Postgres entirely
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Public API functions should always return ok/error tuples The second tuple val shouldn't be just a primitive/struct. Wrap it in a map to allow extension of the return value w/o breaking / updating all call-sites. Broke: {:ok, "string"} Woke: {:ok, %{message: "string"}}
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🚨 hot take 🚨 File organization in your codebase is a waste of time, and the ultimate form of bike shedding
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Does anybody have a rec on a better code review / diff viewing tool? The GitHub UI/X is so awful
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Elixir is so good for AI because the language is so small and terse. You need so many fewer tokens versus, say, a JavaScript / node app.
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John Elm Labs retweeted
Isaac Yonemoto is cooking
@DNAutics
17 Aug 2025
Replying to @JohnElmLabs
stay tuned
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Anybody fine tuned a model on their Elixir codebase? Was it easy? Hard? How were the results? #MyElixirStatus
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Please stop using `when not is_nil(var)`. Tells you nothing about what the data is supposed to be. Be assertive. Say what you _want_, not what you don't. Use is_binary, is_struct, is_boolean, is_list. I'm begging you. #MyElixirStatus
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John Elm Labs retweeted
Jamil Abreu
@jamilabreu
6 Aug 2025
Replying to @JohnElmLabs
🫡 sendy.co/

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