Flavius
@flaviuspopan.com
Senior Software Engineer at the Recurse Center in Brooklyn NY
I’m way too giddy for this
October 6, 2025 at 11:26 PM
I’m way too giddy for this
Reposted by Flavius
new blog post! why do LLMs freak out over the seahorse emoji? i put llama-3.3-70b through its paces with the logit lens to find out, and explain what the logit lens (everyone's favorite underrated interpretability tool) is in the process.
link in reply!
link in reply!
October 5, 2025 at 2:36 PM
new blog post! why do LLMs freak out over the seahorse emoji? i put llama-3.3-70b through its paces with the logit lens to find out, and explain what the logit lens (everyone's favorite underrated interpretability tool) is in the process.
link in reply!
link in reply!
Recently discovered @pagedout.bsky.social, a free experimental (one article == one page) technical magazine about programming tricks, hacking, security hacking, retro computers, modern computers, electronics, demoscene, and other similar topics.
Ya'll might love it too.
Ya'll might love it too.
pagedout.institute
October 6, 2025 at 3:29 PM
Recently discovered @pagedout.bsky.social, a free experimental (one article == one page) technical magazine about programming tricks, hacking, security hacking, retro computers, modern computers, electronics, demoscene, and other similar topics.
Ya'll might love it too.
Ya'll might love it too.
IBM Model M from 1984, always wanted to try one of these
September 30, 2025 at 1:48 PM
IBM Model M from 1984, always wanted to try one of these
TL;DR - Brooklyn is dope and the RC community is awe-inspiring.
First Week at the Recurse Center
One down, eleven to go.
flaviuspopan.com
September 30, 2025 at 3:18 AM
TL;DR - Brooklyn is dope and the RC community is awe-inspiring.
Day 3 @ Recurse Center and I’m already trying to learn C, Zig, CTF/NetSec, soldering, and Elixir. 24hrs a day ain’t enough.
a man in a red coat pushes a red shopping cart in a store
ALT: a man in a red coat pushes a red shopping cart in a store
media.tenor.com
September 24, 2025 at 12:22 PM
Day 3 @ Recurse Center and I’m already trying to learn C, Zig, CTF/NetSec, soldering, and Elixir. 24hrs a day ain’t enough.
Anyone in the #ElixirLang sphere doing cool things with Local First architecture? Something like @electric-sql.com, or making an Elixir version of Linear? I’d like to build a SQLite-backed web app with LiveView, please share any/all resources for getting started with Local First Elixir!
September 6, 2025 at 3:50 PM
Anyone in the #ElixirLang sphere doing cool things with Local First architecture? Something like @electric-sql.com, or making an Elixir version of Linear? I’d like to build a SQLite-backed web app with LiveView, please share any/all resources for getting started with Local First Elixir!
Wanna build a slightly janky, self-hosted val.town alternative for #ElixirLang? I got you.
Automate the Boring Stuff with Elixir
Combining Livebook & n8n to automate workflows in Elixir, Erlang, Python, and Javascript.
flaviuspopan.com
August 6, 2025 at 4:49 PM
Wanna build a slightly janky, self-hosted val.town alternative for #ElixirLang? I got you.
@zachdaniel.dev great episode! Q regarding Spark: is it accurate to say it’s an alternative to Ecto embedded_schema? I’m writing a somewhat complex .json file parser for journal entries and deciding between a struct, embedded_schema, or Spark.
Episode 90: Josh Price: Ash and the Greater Elixir Community
Podcast Episode · Beam Radio · 04/22/2025 · 1h 2m
podcasts.apple.com
July 30, 2025 at 9:16 PM
@zachdaniel.dev great episode! Q regarding Spark: is it accurate to say it’s an alternative to Ecto embedded_schema? I’m writing a somewhat complex .json file parser for journal entries and deciding between a struct, embedded_schema, or Spark.
Has anyone read/worked through the Northwind Elixir Traders book? Came out in May so there's not a lot of reviews.
#ElixirLang #Ecto #SQLite
#ElixirLang #Ecto #SQLite
Northwind Elixir Traders
Immersive, project-based adventure that reimagines the classic Northwind database.
pragprog.com
July 25, 2025 at 5:01 PM
Has anyone read/worked through the Northwind Elixir Traders book? Came out in May so there's not a lot of reviews.
#ElixirLang #Ecto #SQLite
#ElixirLang #Ecto #SQLite
Major kudos to any company that makes their docs LLM native. That little dropdown gives you a crisp markdown copy right into your clipboard. My shortcut has been prepending r.jina.ai/ to URLs but first party support is blissful.
Shoutout to sequinstream.com devs 🫶
Shoutout to sequinstream.com devs 🫶
July 16, 2025 at 3:47 PM
Major kudos to any company that makes their docs LLM native. That little dropdown gives you a crisp markdown copy right into your clipboard. My shortcut has been prepending r.jina.ai/ to URLs but first party support is blissful.
Shoutout to sequinstream.com devs 🫶
Shoutout to sequinstream.com devs 🫶
@zachdaniel.dev Looks like I'm the first to request an indexing of Ash Evals on DeepWiki, plan on diving in soon and curious how it fared.
ash-project/evals | DeepWiki
This document provides a comprehensive overview of the Evals system, an Elixir-based framework for evaluating and comparing Large Language Models (LLMs) on coding tasks. The system enables structured
deepwiki.com
July 12, 2025 at 2:01 AM
@zachdaniel.dev Looks like I'm the first to request an indexing of Ash Evals on DeepWiki, plan on diving in soon and curious how it fared.
Finally got around to playing with Tidewave MCP & Zed Agents to build a liveview app, shared my first impressions below.
How in the world do you guys keep your agents from making a tailwind mess?
How in the world do you guys keep your agents from making a tailwind mess?
Fancy Phoenix at the Bridgerton Ball
Vibecoded with Phoenix LiveView, had a Ball.
flaviuspopan.com
July 11, 2025 at 1:08 PM
Finally got around to playing with Tidewave MCP & Zed Agents to build a liveview app, shared my first impressions below.
How in the world do you guys keep your agents from making a tailwind mess?
How in the world do you guys keep your agents from making a tailwind mess?
I took the 4 Anti-Pattern pages on hexdocs.pm (code, design, process, meta-programming) and smashed them into 1 markdown file so I can feed it to Claude for an #ElixirLang code review. 20k tokens, feel free to download a copy.
Yes I know credo/styler exist.
Yes I know credo/styler exist.
github.com
June 26, 2025 at 11:11 PM
I took the 4 Anti-Pattern pages on hexdocs.pm (code, design, process, meta-programming) and smashed them into 1 markdown file so I can feed it to Claude for an #ElixirLang code review. 20k tokens, feel free to download a copy.
Yes I know credo/styler exist.
Yes I know credo/styler exist.
I’ve bought nearly every #ElixirLang book released in ‘24/‘25 and would love to give my zed agent access to this rich knowledge base. Any ideas? RAG MCP? PDF MCP?
June 18, 2025 at 6:43 PM
I’ve bought nearly every #ElixirLang book released in ‘24/‘25 and would love to give my zed agent access to this rich knowledge base. Any ideas? RAG MCP? PDF MCP?
New month, new post.
TL;DR - I started a business, got into the Recurse Center, and had a lot of time to connect with friends & family. This ones more of a look into my lifestyle than anything technical.
TL;DR - I started a business, got into the Recurse Center, and had a lot of time to connect with friends & family. This ones more of a look into my lifestyle than anything technical.
The Elixir Year: Month 5 Review
31 Days of Family, Friends, & a bit of Elixir.
flaviuspopan.com
June 4, 2025 at 7:55 PM
New month, new post.
TL;DR - I started a business, got into the Recurse Center, and had a lot of time to connect with friends & family. This ones more of a look into my lifestyle than anything technical.
TL;DR - I started a business, got into the Recurse Center, and had a lot of time to connect with friends & family. This ones more of a look into my lifestyle than anything technical.
Love it when #ElixirLang/#Erlang is on the front page of HN. I'm always surprised by how much praise BEAMlangs get in the comments; being HN I always expect some haters but there's genuinely few.
Why I Wrote the BEAM Book | Hacker News
news.ycombinator.com
June 4, 2025 at 4:32 PM
Love it when #ElixirLang/#Erlang is on the front page of HN. I'm always surprised by how much praise BEAMlangs get in the comments; being HN I always expect some haters but there's genuinely few.
When meeting new people or introducing myself, I sometimes mention that days after I was born, the Romanian Revolution began and separated me from my family for the next 3 years.
This video is a wild trip through a time I can’t remember.
P.S - no gruesome footage is actually shown
This video is a wild trip through a time I can’t remember.
P.S - no gruesome footage is actually shown
When Romania Executed Its Dictator on Live TV
YouTube video by Penguin History
youtu.be
May 21, 2025 at 9:01 PM
When meeting new people or introducing myself, I sometimes mention that days after I was born, the Romanian Revolution began and separated me from my family for the next 3 years.
This video is a wild trip through a time I can’t remember.
P.S - no gruesome footage is actually shown
This video is a wild trip through a time I can’t remember.
P.S - no gruesome footage is actually shown
SSH experiences are underutilized. I know #Erlang ships with an SSH server (thanks to last month’s RCE vuln), wonder what sort of shenanigans you can make with SSH + #ElixirLang 🤓
Hackmud Clone?
Hackmud Clone?
itter.sh - Social Media via SSH
itter.sh: Ironic, text-only, SSH-based social networking for terminal lovers. No browser, no js, just eets.
www.itter.sh
May 9, 2025 at 6:25 PM
SSH experiences are underutilized. I know #Erlang ships with an SSH server (thanks to last month’s RCE vuln), wonder what sort of shenanigans you can make with SSH + #ElixirLang 🤓
Hackmud Clone?
Hackmud Clone?
I’M ATTENDING THE RECURSE CENTER IN SEPTEMBER. AAAHHHHHHH!!
(just found out a min ago)
#ElixirLang all day every day
(just found out a min ago)
#ElixirLang all day every day
The Recurse Center
The Recurse Center is a self-directed, community-driven educational retreat for programmers in New York City.
www.recurse.com
May 8, 2025 at 11:57 PM
I’M ATTENDING THE RECURSE CENTER IN SEPTEMBER. AAAHHHHHHH!!
(just found out a min ago)
#ElixirLang all day every day
(just found out a min ago)
#ElixirLang all day every day
Just picked up a virtual ticket for $99, can’t wait to e-meet you all!
#ElixirLang #ElixirConfUS #myelixirstatus
#ElixirLang #ElixirConfUS #myelixirstatus
PRE-SALES TICKETS NOW AVAILABLE for ElixirConf US 2025 in Orlando! Secure your spot today for the year's most exciting Elixir gathering. ti.to/elixirconf/2...
May 6, 2025 at 2:33 PM
Just picked up a virtual ticket for $99, can’t wait to e-meet you all!
#ElixirLang #ElixirConfUS #myelixirstatus
#ElixirLang #ElixirConfUS #myelixirstatus
I quit my job *just before* the November election, now 6 months later, I'm trying to answer some tough questions about my past & present choices.
#ElixirLang
#ElixirLang
The Elixir Year: Month 4 Review
Asking hard questions and facing facts about my future with elixir.
flaviuspopan.com
May 1, 2025 at 8:18 PM
I quit my job *just before* the November election, now 6 months later, I'm trying to answer some tough questions about my past & present choices.
#ElixirLang
#ElixirLang
If any #ElixirLang devs have gone over the top with Phoenix Liveview presence magic, or know a site that did, drop a link! I want to see the most creative uses of pub/sub & presence tricks. Something like the @lawik.bsky.social underjord.io "Magic Enabled" toggle.
April 9, 2025 at 2:06 AM
If any #ElixirLang devs have gone over the top with Phoenix Liveview presence magic, or know a site that did, drop a link! I want to see the most creative uses of pub/sub & presence tricks. Something like the @lawik.bsky.social underjord.io "Magic Enabled" toggle.
Reposted by Flavius
A little demo doing this in #ElixirLang / iex
April 3, 2025 at 8:24 PM
A little demo doing this in #ElixirLang / iex
Reposted by Flavius
🧵 Here's a chart showing monthly costs that @justcrosspost.app generates with info about each service and some screenshots 🖼️
#buildinpublic #crossposting #crosspostingapp #costs #solopreneur
👇🏻
#buildinpublic #crossposting #crosspostingapp #costs #solopreneur
👇🏻
April 4, 2025 at 9:44 AM
🧵 Here's a chart showing monthly costs that @justcrosspost.app generates with info about each service and some screenshots 🖼️
#buildinpublic #crossposting #crosspostingapp #costs #solopreneur
👇🏻
#buildinpublic #crossposting #crosspostingapp #costs #solopreneur
👇🏻