Groxio

Hey! We are over at the other site too - groxio.bsky.social

My keynote at ElixirConf EU 2026, Precision in Type System Design, is up: youtube.com/watch?v=Ay-gnC… I talk about the trade-offs inherent to type system design, why there is no silver bullet, and then share overall updates on the typed Elixir effort.

Most developers treat AI configuration like sticky notes, but where that tooling lives determines if it can scale. Committing your AI instructions to the repository turns them into versioned, shared infrastructure. grox.io/blog/25-your-a… #ElixirLang

If you treat Elixir lists like arrays, you will eventually find yourself fighting the language. Lists are linked structures where only the front is cheap to access, so stop reaching for indices and start matching on the head. grox.io/blog/24-lists-… #ElixirLang

Stop retyping the same instructions to your AI. You can layer your prompts like code by using specialized sub-agents and custom slash commands to build a maintainable toolchain. grox.io/blog/23-buildi… #ElixirLang

ElixirConf US 2026 is coming to Chicago! (and it's hybrid - in person and virtual) September 9 - Hands-on workshops September 10-11 - Two days of inspiring conference sessions Submit YOUR talk! Whether you're a seasoned speaker or taking the stage for the first time - now's the time!! Deadline 4/12! sessionize.com/elixirconf-us-… #ElixirLang

Control flow in Elixir is not just about branching logic. It is about deciding whether truth or pattern is the right mechanism for your data. When you learn to only catch what you can fix and let the rest crash, your code becomes more resilient. #ElixirLang grox.io/blog/22-contro…

Hooray! @hugobarauna has done a fantastic job improving the onboarding experience for Tidewave, smoothing the steps to select your framework and configuring your first agent!

@CodeBEAMio Great conference!! It was wonderful to be in Vancouver!

🎉 Code BEAM Lite Vancouver complete! Amazing speakers, incredible community, unforgettable day. Thank you to everyone who made the first Code BEAM in Canada so special! 🇨🇦 🚀 See you next time!

If you repeat the same instructions in every AI prompt, you haven't built a workflow. You have just automated the typing. Treat your prompts like code and apply the DRY principle to keep your project consistent. grox.io/blog/21-stop-r… #ElixirLang

🌆Elixir community is coming to Chicago: Big ideas. Great architecture. Deep-dish-fueled discussions. 📅 September 9-11 🎤 CFP open now 🗓 Deadline: April 12 elixirconf.com

Why attend Code BEAM Europe? Real-world BEAM in production - actionable insights from 30 speakers 300+ engineers who know these technologies, plus an unconference track driven by the community The Philharmonic in Haarlem - great venue, great city Tickets coming soon 👉 join the waitlist: #newsletter" target="_blank" rel="nofollow noopener">codebeameurope.com/#newsletter 📅 21–22 Oct · Haarlem

In Elixir, data structures are contracts. By using tagged tuples like `{:ok, value}`, success and failure become explicit data rather than hidden states you might forget to check. Here is why the shape of your data is the feature. grox.io/blog/20-when-t… #ElixirLang

Building a Phoenix app in 30 minutes with AI is impressive, but working code and maintainable code are not the same thing. We looked inside the generated code to see where the shortcuts were taken and how to fix them. #ElixirLang grox.io/blog/19-the-mo…

In Elixir, inner scopes can read outer bindings but can't change them. Once you see that boundary clearly, the common rebinding mistake stops looking like a bug and starts looking like a design. grox.io/blog/18-scope-… #ElixirLang

AI built a full Phoenix LiveView app in 30 minutes, then kept adding “helpful” features nobody asked for. The demo looked perfect. The maintenance story is where the real cost appears. New blog post! grox.io/blog/17-the-il… #ElixirLang

Level up on April 22nd: Full-day ElixirConf EU workshops. OTP patterns, RAG systems, LLM apps, BEAM internals, AI + Elixir. Limited spots @whatyouhide @redrapids @erik_stenman Reserve: #training" target="_blank" rel="nofollow noopener">elixirconf.eu/#training

Come join the gathering! Really looking forward to seeing everyone there! #ElixirLang

@CodeBEAMio @rvirding @whatyouhide @redrapids We are very excited to be in Vancouver - it's a great line up of speakers and can't wait to catch up with people!

🎉 Code BEAM Lite Vancouver agenda is LIVE! 🇨🇦 Keynote: @rvirding & Brooklyn Zelenka on Erlang's lessons for local-first systems 10 speakers including @whatyouhide , @redrapids , Hayleigh Thompson & more March 23 | Limited tickets 🎟️ #schedule" target="_blank" rel="nofollow noopener">codebeamvancouver.com/#schedule

In most languages, = stores a value. In Elixir, = matches a shape. If the structure fits, names bind. If it doesn’t, the match fails — and that failure is the filter. Pattern matching is selection, not assignment. Full post: grox.io/blog/16-patter… #ElixirLang