Just published Phoenix 0.12.0! 🎉 Excited for this one because it now supports `aria-label` and `aria-labelledby` Thanks to contributors for making it happen! 🥳 phoenix-test.hexdocs.pm/PhoenixTest....

I keep finding that the diverge-then-converge pattern is really helpful with LLMs. So, I wrote a post about it. Hope others find it helpful! ✍️ www.germanvelasco.com/blog/diverge...

Diverge then converge with LLMs

One of the patterns I've found particularly helpful with LLMs is the diverge-then-converge pattern. LLMs excel at both of those things separately, and when we put them together, they are an excellent ...

germanvelasco.com

For the first time in a while, I have an opening for new clients (in September). Do you need help with your product, engineering team, or an Elixir/Phoenix project? How I help teams (3 Ps) 👇

German Velasco

Software developer and consultant. Let's build great software together.

germanvelasco.com

Next time you're upgrading Phoenix and you're using AI assistance, try pointing it to elixirstream.dev/gendiff/api and tell me how it goes. cc @steffend.me #ElixirLang

What are companies in the #ElixirLang space struggling with right now? AI adoption? Finding product-market fit? Team dynamics? Hiring? Something else? (I know there's varied answers, but curious if there are commonalities)

I'm not a big fan of the big-upfront-plan approach to work with LLMs. Am I the only one? I wrote a bit about it in www.germanvelasco.com/blog/are-pla...

Are plan files the new 10k-line PRs?

Many people's new way of working with LLMs is to start with an idea, have the LLM create a spec (review and approve that), then have the LLM generate a very detailed plan. At that point, people have t...

germanvelasco.com

I finally finished writing the blog post that shares some things I tried (some good, some bad) when creating ExCrap without reading the code. Hope others find it helpful! ✍️ www.germanvelasco.com/blog/i-wrote... #ElixirLang

Reflections on creating ExCrap without looking at the code

I recently published ExCrap, an Elixir library for calculating Change Risk Anti-Patterns scores -- or as they're commonly called CRAP scores. It made for a perfect experiment: creating the library wit...

germanvelasco.com

German Velasco@germsvel.com · 2mo ago

Just published a new library to calculate CRAP metrics (I know, that's what it’s called 🤷): change risk anti-patterns. It’s a metric composed of cyclomatic complexity and test coverage. 👇 ex-crap.hexdocs.pm/readme.html #ElixirLang

I wrote a post for whenever you have a co-worker who wants to keep dead code around. 

In particular, I love the loss aversion principle that I tried to capture in these two contrasting images in the post.

It was really fun! I tried to ramble as little as possible. My main point was that pi lets me build tools that are tightly integrated, and usable by me and the LLM. It helps me being more effective without relinquishing control.

German Velasco@germsvel.com · 2mo ago

A few weeks ago, I paired with @claudio-ortolina.org where he shared a bit about his AI workflow and how he uses pi, as he walked me through his app to manage his huge (and ever growing) record collection. Thanks again Claudio for pairing! www.elixirstreams.com/ai_files/pai... #ElixirLang

A few weeks ago, I paired with @claudio-ortolina.org where he shared a bit about his AI workflow and how he uses pi, as he walked me through his app to manage his huge (and ever growing) record collection. Thanks again Claudio for pairing! www.elixirstreams.com/ai_files/pai... #ElixirLang

Elixir Streams |> Pairing with Claudio Ortolina on his AI workflow

Elixir and Phoenix tips, courses, and more.

elixirstreams.com

Just published a new library to calculate CRAP metrics (I know, that's what it’s called 🤷): change risk anti-patterns. It’s a metric composed of cyclomatic complexity and test coverage. 👇 ex-crap.hexdocs.pm/readme.html #ElixirLang

If we want to build software factories (still an if for me), how can we build good ones? And I don’t know about you, but I think it all comes down to verification. 👇 www.germanvelasco.com/blog/draw-th...

Draw the rest of the ___ owl (software factory edition)

My guess is that most software development teams in the world are at a point where we are drawing the two circles. Those are all the teams where developers use LLMs daily. But then you hear about team...

germanvelasco.com

Making the decision to stop writing code by hand a few months ago was the biggest small change I made that helped me see LLMs differently. It took a while, but I finally like programming with them. Wrote a post that shares some thoughts on that 👇 www.germanvelasco.com/blog/stop-wr...

Stop writing code by hand (and feel the friction)

If you're using LLMs in your day-to-day workflow, and you're only using them as assistants that you ask questions of (like a glorified Google in your terminal or IDE), or if you call on them like a ge...

germanvelasco.com

A few weeks ago, @tomasztomczyk.bsky.social was kind enough to pair with me and show me his AI workflow. It was an awesome pairing session where he showed me everything, from his new tool (crit), custom skills, commands, workflows, etc. 👇 youtu.be/9c3J4J8U6a8 #ElixirLang #AIFiles

Pairing with Tomasz Tomczyk on his AI Workflow

YouTube video by German Velasco

youtu.be

I recently finished an experiment where I tried to write (and publish) daily, so I wrote a retrospective on it. For those interested 👇 www.germanvelasco.com/blog/daily-w...

Daily writing retrospective

Back in April, I decided to write daily for my newsletter. Up to that point, my newsletter was mostly a delivery mechanism for my blog. But I wanted to change that. I wanted to write more.

germanvelasco.com

I've been writing daily in my newsletter for a couple of weeks now. Some days things just come out flowing like I've been meaning to write them for a while. This blog post was one of those (adapted from a daily post). Hope others enjoy it! ✍️ www.germanvelasco.com/blog/pair-pr...

Pair-programming is a cheat code

I had that written on my office whiteboard for a while last year. I had just finished working with a client for over a year where the whole team pair-programmed full-time (we also did a lot of mobbing...

germanvelasco.com

PhoenixTest v0.11 is out! Huge thank you to all who contributed 🥳 Changelog: hexdocs.pm/phoenix_test... #ElixirLang

I decided to write daily (for 30 days) on my newsletter (www.germanvelasco.com#newsletter_f...) I really like writing as a tool to sharpen my thinking. So far, I've talked about sharpening our tools, stacking days, isoquants and isocots lines. If that sounds interesting, join me!

German Velasco

Software developer and consultant. Let's build great software together.

germanvelasco.com

After some deliberation, I finally decided to make www.TestingLiveView.com free! I still think it's an amazing resource, but my focus is elsewhere now. So, I wanted to make it a free resource for the community. #ElixirLang

Testing LiveView

Test LiveView effectively. Trust your code. Ship confidently.

testingliveview.com

Anybody interested in pairing with me (and recording) to show how you're using AI in your day-to-day for ElixirStreams? I think there's a lot of siloed information (and hints online). So, I'd love to shed some light with real people showing real usage. #ElixirLang

Recorded a couple of tutorials to help onboarding in Harkn, and figured, why not just put them in a docs page? For those interested in Harkn, these are glimpses into how it works too 👇 👀 harkn.app/docs

Harkn

harkn.app

Some people ask, why not just email announcements? Email is a great way to distribute them. But you're faced with the blank-cc problem. Wrote a bit more that here 👇 harkn.app/blog/email-v...

Email vs Announcements

harkn.app

German Velasco@germsvel.com · 5mo ago

I've been thinking (writing is thinking, right?) about why Slack, Discord, etc. are a bad fit for your team's internal announcements. It's not the right medium! More thoughts 👇 harkn.app/blog/slack-v...

PhoenixTest v0.10.0 is released! It's got a lot of things, and (I think) none from me! A huge thanks for all who contributed! 🥳 hexdocs.pm/phoenix_test... 📚 Changelog: hexdocs.pm/phoenix_test... #ElixirLang

I've been thinking (writing is thinking, right?) about why Slack, Discord, etc. are a bad fit for your team's internal announcements. It's not the right medium! More thoughts 👇 harkn.app/blog/slack-v...

Slack vs Announcements

harkn.app

The State of Elixir Survey for 2025 is live! elixir-survey.typeform.com/2025-edition Fill it out if you have any connection to the Elixir ecosystem. It really helps us understand what happens. Curiosum are awesome to run this for the community. #elixirlang

Curiosum Elixir Survey 2025

Elixir Survey 2025 by Curiosum - a global community survey collecting insights about how developers and teams use Elixir, their favorite tools, challenges, and expectations for the future of the…

elixir-survey.typeform.com

Sweet #Ecto datetime helpers? Yes, please! 😄 - ago, from_now, date_add, datetime_add 👨‍🍳🤌 #ElixirLang

Alright... it's all up now 🎉 I walked through the Phoenix 1.8 AGENTS md file, and it was both funny and informative! You can see the full 25 mins of glory or in parts (on the same page) 👇 www.elixirstreams.com/tips/what-ag... #ElixirLang

Elixir Streams |> What agents get wrong!

Elixir and Phoenix tips, courses, and more.

elixirstreams.com

German Velasco@germsvel.com · 10mo ago

Getting back into recording **short** #ElixirLang video tips by recording a walk-through of @elixirphoenix AGENTS file... It's ~25 mins long. I think I'm rusty 😅

Getting back into recording **short** #ElixirLang video tips by recording a walk-through of @elixirphoenix AGENTS file... It's ~25 mins long. I think I'm rusty 😅

Anybody using #ElixirLang in production and doesn't like their error tracking service/APM service? Would you be willing to jump on a 30 min call today and show me what you like/dislike about it? 🙏

Don’t let the age of this article from @germsvel.com scare you off, vertically slicing features is still a great idea: www.germanvelasco.com/blog/break-a... #AgileDevelopment

Break apart your features into full-stack slices

Our communication practices can be very disrupting. Remote work has taught me to be more considerate of how I communicate with others. We should treat other people's time as we like ours to be treated...

germanvelasco.com