My favorite application of AI? Sharpening my tools. Just vibe-coded this toggle for #ElixirLang maps in Neovim.

Want to disable all unmocked HTTP calls from Req at once during #ElixirLang tests? Simply add this to test/test_helper.exs: Req.default_options( adapter: fn req -> raise "Unmocked call to #{req.url}" end ) (replace `raise` with a log warning if that's more useful)

It's easy to keep nudging the AI until it 'fixes' the tests, and it feels like achieving something, while the value of such tests may be plainly negative. Seeing too many false positives like that lately.

Isn’t it neat that Elixir’s AST is valid Elixir? What other languages besides Lisp can claim that?

It's beyond me why Quokka, the awesome Elixir formatter plugin, has so few stars on GitHub, I use it on every project: github.com/emkguts/quokka

A very nice, concise, top-level introduction to Elixir and BEAM. Share it with anyone who's willing to understand why you're so lucky to work with the tech. youtu.be/_5B_B_IgtAg

I never miss a talk by Evan Czaplicki, and a fresh one just dropped: www.youtube.com/watch?v=YPAa...

Just something to casually mention to your next non-Elixir developer friend.

Me: What's your current favorite escape hatch when LiveView doesn't quite cut it? Chris McCord: Web components with Lit. #ElixirConfEU

YES

Vibe Mitigation Engineer. Full-time, on-site.

When to name your #ElixirLang function with a bang? Only if the function is *expected* to throw errors during normal execution. Do not simply 'inherit' bangs from what’s inside that function (`Repo.update!`) if those exceptions would signal a bug (that is, should never happen).

AI won’t create anything fancy on its own. But it’s great at producing building blocks, with which you, human, can build the fancy.

Just published my first Hex package—one that no one else should even consider using. It was simply the easiest way to get its documentation into Dash. Am I doing it wrong? #ElixirLang

Hey @sasajuric.bsky.social, I would be very curious to hear about your experience teaching programming to non-developers. Would you consider bringing this up in your next interview or doing a conference talk about it?

Hey @peterullrich.com, in the context of programming, would you say that the effort-to-result ratio of writing blog posts is better than that of creating videos?

it'll take your job they say

TIL: You can define fetch/2 in your struct-defining module and have it return anything you want for the [] operator: #ElixirLang

Today is the day I, too, moved to Ghostty. Big thanks Alacritty, you’ve been a blast! Feel free to discover a cool trick or two from those I've collected in the last few hours: github.com/mxgrn/dotfil...

#elixirlang and #neovim users, You're probably already using the vim-surround plugin. The following config line will allow you to press % in visual mode to wrap the selection in %{}: let g:surround_37 = "%{\r}" It's useful for converting keyword lists to maps, for example.

Quick Neovim pro tip: Say, you’re adding a keymap and are torn between using a leader/space as a prefix or <C-somekey>. Choose Ctrl when pressing this combination repeatedly would make sense, such as for actions like moving around. Choose a prefix for stand-alone actions, like firing a command.

Poor man's audit log for Postgres tables. Pure SQL, no Elixir required. Time-to-shelf: 1 minute. Run the final part for each table you want to audit. Use Postico as the UI. gist.github.com/mxgrn/9900c2...

New type of spam: AI-generated songs on Spotify.

Could you recommend an #ElixirLang library for tracking changes in the database, such as for audit purposes? I need it to work with Postgres and Ecto.

Woke up to this. LiveView 🎉

macOS lovers, just wanted to share a quick list of apps that, after trying a bunch of alternatives, I personally use daily — and absolutely adore: github.com/mxgrn/best-o...

I no longer understand why merge commits are so demonized. If every commit is meaningful, why squash? If a PR contains multiple meaningful commits and rebasing guarantees multiple merge conflicts, why rebase? Just merge. Bonus: it preserves the exact history of changes.

TIL: You can put a LiveComponent *outside* of a LiveView render (e.g., in app.html.heex), and it will behave as a child of the currently mounted LiveView. Confusing. Fascinating. #ElixirLang.

A new talk by Saša Jurić, Against the Grain, has just been released on YouTube: www.youtube.com/watch?v=s6c4... Are you as excited as I am? #ElixirLang

If Elon was actually funny, he'd make a bluesky account and post "I'm sure you're all wondering why I've gathered you here"

Do I even need to "provide value" to gain followers on Bluesky this quickly? 🤔

TIL: When writing #ElixirLang tests, don’t rely on alphanumeric sorting in Postgres to be consistent.

Today, I joined @tylerayoung.com and other amazing engineers at jumpapp.com! Excited to tackle new challenges with Elixir 🚀

You may know that `Phoenix.LiveView.mount/3` is called 2 times during the life-cycle of a LiveView: at its initial HTML render, and after client connects to server. I just realized it's also called from 2 different processes. The second process is actually spawned on client connecting to server.

Literally my latest hotfix.

An experienced #ElixirLang developer is an expert at resolving race conditions.

#ElixirLang devs, do you use any naming conventions for async calls? It’d be handy to quickly tell if a given function call finishes everything before the next one, or whether it starts some background tasks that need to be taken into account. #ergonomiccode

Distributed BEAM experts, When would you choose to use libcluster over dns_cluster, and vice versa? #ElixirLang

Just a periodic reminder of how awesome the AppSignal blog on Elixir is, usually covering intermediate to advanced topics. Like, check out their new post: blog.appsignal.com/2024/10/29/m...

LiveView and HTML experts! Why do the official Phoenix.Component docs, in the "Dynamically adding and removing inputs" section, suggest using a <button> for adding/removing inputs? The thing is, a <button> isn't even meant to handle 'change', according to standards. Does it work just by chance?

This account is primarily for sharing my TILs on #ElixirLang, which I code in daily. Some of my projects, all written in #Elixir: botpresto.com: tools that power all my Telegram bots. pairs.one: ~13K users play this multiplayer Memory game each month. ⬇️