Stefan Wintermeyer

Phoenix/Elixir, Ruby on Rails, WebPerf, Asterisk/VoIP, AI u. Agentic Programming - effektive Workflows u. nutzerseitige Verhaltensmuster. Privat: Vater. Boomer.

[José Valim @josevalim]

https://t.co/T4UYnB1X5c

[José Valim @josevalim]

Elixir v1.20 released! Now officially a gradually typed language: Elixir type checks every single line of code, finding bugs and dead code, without developer overhead (no typing signatures) and extremely low false positives rate. Plus a faster compiler! Links and reports below.

[Declan Walsh @declanwalsh]

Great and tragic news at once.
Emmanuel, the 5-year old featured in this report, has since recovered and left the Ebola ward, his father told me.
But the lab technician I met in the next ward deteriorated and died last night. His name was Bienfaits.
https://t.co/ggpolsFgAY

[Stefan Wintermeyer @wintermeyer]

Not an easy one to read.
https://t.co/mZ9oAAlNtO

[James Hibbard @jchibbard]

📝 Rails 8.1 adds first-class Markdown support, including .md routes, and model-level to_markdown methods. A walkthrough of the new API and common use cases. #Rails https://t.co/kDKl5QgjXu

[Stefan Wintermeyer @wintermeyer]

Reading "Steve Jobs in Exile: The Untold Story of NeXT and the Remaking of an American Visionary" by @geoffrey_cain. Great book! Interesting dive into IT history. Some discrepancies about Jobs compared to "Steve Jobs: The Exclusive Biography" by @WalterIsaacson. I do wonder who is right.

[Stefan Wintermeyer @wintermeyer]

@siaw23 @rorysutherland @neiltyson I love @rorysutherland and his book Alchemy. But TBH he can become a bit repetitive over time. He has a fixed set of examples he likes to repeat. But this sounds a lot more negative as I want it to be. He is brilliant.

[ClaudeDevs @ClaudeDevs]

New in Claude Code (research preview): dynamic workflows.

Claude writes an orchestration script on the fly, then spins up a large fleet of coordinated subagents in parallel to take on your most complex tasks.

Use the word "workflow" in a prompt to get started.

[Dan McAteer @daniel_mac8]

This is amazing. Do this:

1. Set model to Opus 4.8
2. Reasoning effort to /ultracode

Enables Claude Code's new Dynamic Workflows.

Claude will autonomously detect complex tasks, write an orchestration script, and spawn an agent swarm.

[Social Engineering Community @sec_defcon]

This Friday (May 29th) @ 5 PM PT our call for competitors closes!

Get your submissions in ASAP if you want your chance to compete in an official #DEFCON34 contest!

Vishing Competition: https://t.co/NjFOvuK2Eq

Battle of the Bots: https://t.co/7x4uqCACUb

[ClaudeDevs @ClaudeDevs]

We’ve shipped a security-guidance plugin for Claude Code that helps identify and fix vulnerabilities as you’re writing code.

Available for all Claude Code users. Install from the plugin marketplace (/plugins).

[John Cena @JohnCena]

Minimize envy. Just because someone else wins doesn’t mean you lose.

[Peter Steinberger 🦞 @steipete]

Folks: when you write skills, ask your agent to be token efficient, relax grammer. I see too many skills that write books in the skill description, and all that crap is loaded into every context.

I wrote a skill that finds the worst offenders. https://t.co/kfaaJpxMXE

[José Valim @josevalim]

When someone replies to a pull request comment with obvious AI content, it genuinely saddens me. PRs used to be a place to teach/learn/discuss software but now there’s nobody on the other side.

If I wanted an agent response, I’d ask mine.

Social coding is dead.

[Charles Oliver Nutter @headius]

Call me paranoid, but I'm starting to see signs that there's folks actively sabotaging my work on JRuby... advising conferences not to accept my talks and projects to drop JRuby support. So disheartening to me after dedicating so many years to the Ruby and JRuby communities. 😢

[LaurieWired @lauriewired]

A cool way to watermark network packets is to (very subtly) adjust the timing.

Packet comes in a tiny bit late, maybe that’s a 0. Packet arrives on time? Maybe that’s a 1.

Of course, the neat part is that everything can remain entirely encrypted / the side channel doesn’t “touch” the underlying data flow, so it looks relatively normal.

You can actually get this timing to survive through multiple network hops + switches, because statistically they are (mostly) adding fixed delays. Queueing can mess you up, but as long as your information is above the network jitter noise, you can still decode it.

There’s basically an arm’s race going on. Some networks attempt mixing flows with traffic shapers to preserve anonymity…but you also can’t infinitely pad/delay packets without users getting really annoyed.

So, so many ways to hide a bit when you think about it.

…also a lot of ways to detect it too.

[Stefan Wintermeyer @wintermeyer]

It feels a bit sad to see the robot displaying no feelings at all. Just checking out after a shift while the humans in the background celebrate.

@adcock_brett Please next time make the robot simulate a little bit of joy. 😉

[Brett Adcock @adcock_brett]

We just wrapped what began as an 8-hour challenge - and it ran for 200 hours without a failure

Shoutout to the team for the hardcore engineering behind F.03 and the robust Helix models powering it

[Klotzkette @Klotzkette]

Ich habe für die deutschrechtlichen Llegal Plugins und Skills für Claude Cowork in GitHub Plugins für alle Fachanwaltschaften in Deutschland angelegt, noch sehr oberflächlich, aber sicherlich ausbaufähig, vielleicht ist das ja für manche Leute interessant. Hier: https://t.co/3Uc9TEJZxk

[José Valim @josevalim]

Elixir v1.20.0-rc.6 is out and it implements inference across applications, fully delivering on the ~15 weeks roadmap established at the beginning of the year.

Please give it a try, it should be our last stop before the actual v1.20.0 final: https://t.co/tVdK66DvLI

[Stefan Wintermeyer @wintermeyer]

When I worked at SuSE Linux around 1999, the distribution was still sold on CDs. I always had this ridiculous idea: record a Christmas song and include it on the release CD. The goal? Get a Linux distribution into the Top 100 music charts. Given how many copies we sold in the first days after a release, it probably would have worked. 😂