Elixir ▷ Max

In the AI era, a good developer's core job is _understanding_ what the AI wrote, down to the details when it matters. Understanding complex systems is a rare skill. It always has been. So demand for good developers isn't going anywhere. If anything, it's going up.

LLMs do improve the quality and correctness of *my* code, I dunno.

A small TIL for Git lovers: `git merge-base HEAD main` gives you the nearest common commit between the current branch and main. That's the commit where those two parted ways.

People have always been wary of computer viruses, and for good reason. Now, we have much smarter non-deterministic (!) systems running our VPSs and laptops, online, with increasing access to other services. What can go wrong?

So sad that Telegram has a bad reputation in the West. It's *by far* the best UI/UX messenger out there. WhatsApp doesn't even come close (although I love the fact that it runs on the BEAM).

For as long as I can remember, I thought these were equivalent: 1) if foo, do: bar, else: baz 2) foo && bar || baz Until the day bar was nil. #ElixirLang

Whoever designed the Apple Watch Workout app, please leave for Meta.

My lexicorn.ai just sold its 10th paid subscription. On to the first 100! :)

I don't know who needs to hear this, but this works in #ElixirLang (new line after :foo is key): if true, do: (:foo :bar) Can you guess what it returns?

Taking an acclimatization walk around Periche, Nepal. 4400m.

Want a supervised task to finish (not get killed) during rolling #ElixirLang deployments? Simply trap the exit: Task.Supervisor.start_child( MyApp.TaskSupervisor, fn -> Process.flag(:trap_exit, true) do_work() end ) The task will have 5 seconds to finish.

Just downloaded ChatGPT Atlas, and I must say this direct browser-ChatGPT integration can be very useful. It just walked me through creating a free-form Google Analytics report, which I had no knowledge of. Previously, I'd need to send ChatGPT screenshots of where I was, and it was tedious.

Are you learning a foreign language by any chance? And what are the odds you use Telegram too? 🤔 I’ve been building a Telegram bot that finally makes vocabulary learning with spaced repetition fun for me, thanks to LLMs. Maybe it will for you, too. Give it a try: t.me/lexicornbot?...

TIL: If you append /rss to the link of any bsky profile, you'll get, well, an RSS feed. Handy if you really don't want to miss posts from a specific someone.

Neovim geeks 🫶 — this helps me debug in #ElixirLang: With the cursor inside a function, :ElixirCopyFuncFqn copies its fully qualified name (FQN) to the clipboard — ready to paste into IEx, local or remote. github.com/mxgrn/dotfil...

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.

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.

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.