Lucas Mendelowski's Avatar

Lucas Mendelowski

@lucas.mendelowski.com

Developer focused on building web-applications. KRUG (Kraków Ruby Users Grup) coorganizer.

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25.11.2023
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Latest posts by Lucas Mendelowski @lucas.mendelowski.com

I believe your couldn't use slots without shadow dom.

21.02.2026 08:08 👍 0 🔁 0 💬 0 📌 0

What about mutation observer and connected callback? Has a situation improved? I'm aware you can do it manually but Stimulus has this built in.
Also is shadow Dom still required? That was another thing I didn't like when trying to build re-usable headless components.

21.02.2026 07:57 👍 0 🔁 0 💬 2 📌 0

Nice! Can I ask you a question about background sync? What approach do you use for it? Is it a completely separate process that is launched separately from main Rails server?

31.12.2025 10:35 👍 0 🔁 0 💬 0 📌 0

Looking forward to the blog post!

19.12.2025 17:33 👍 1 🔁 0 💬 0 📌 0

No worries, I totally understand. We'll definitely keep a spot for you next time - it'd be amazing to have you with us!

07.11.2025 15:30 👍 1 🔁 0 💬 1 📌 0

We are having Ruby meetup a day earlier in Cracow. It's not very far away from Vienna. Would you like to visit us? I'd love to have you on stage 😊

07.11.2025 13:39 👍 0 🔁 0 💬 1 📌 0
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GitHub - lcmen/omagnome: Carefuly curated and opinionated Gnome setup that I use on my Linux machines Carefuly curated and opinionated Gnome setup that I use on my Linux machines - lcmen/omagnome

Everyone is talking about #omarchy , but if you are not ready to switch to Arch or too comfortable with GNOME, you can try my opinionated tiling setup for GNOME. It's distro-agnostic, so it works any distro:

github.com/lcmen/omagnome

Enjoy!

01.11.2025 19:42 👍 1 🔁 0 💬 0 📌 0

Nexus line was cool! I had Nexus 4 then 5X :)

Good to hear that 10 Pro works great for you! Just need to wait for a good deal then. Thanks!

31.10.2025 22:14 👍 1 🔁 0 💬 0 📌 0

I'm a Pixel fan myself (currently still rocking 7), thinking about upgrading to 10 but have read bad reviews where they complain about battery life, performance, video quality etc.

Love to hear about your experience.

31.10.2025 17:12 👍 1 🔁 0 💬 1 📌 0

Excellent summary. I was never a fan of Sorbet but I really like the approach you took with Literally. I even opened the small PR!

21.10.2025 18:02 👍 2 🔁 0 💬 0 📌 0

Would you like to give a talk about Hanami on one of the KRUG meetups?

19.10.2025 16:09 👍 1 🔁 0 💬 1 📌 0

Come too visit us!

I've been active reader of your blog for quite long time. Great content and I love the post about parslet gem - we are using it on production thanks to your article. I need to buy you a few drinks for that 🍻.

17.10.2025 17:36 👍 1 🔁 0 💬 1 📌 0
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KRUG #4 2025 · Luma Hello Ruby enthusiasts, We’re back! After postponing the September meetup, we’re thrilled to announce the rescheduled KRUG #4, powered by Zendesk. Zendesk is…

KRUG #4 is back! 💎

Join us on Oct 28 at 18:00 at Zendesk Kraków.

We’ve got a great lineup of talks - from the Decider Pattern, through a PostgreSQL-to-SQLite migration, to lessons on managing gem upgrades and building mobile apps the Rails way.

RSVP 👉 luma.com/se3qppbl

See you there! 🚀

17.10.2025 16:33 👍 0 🔁 0 💬 1 📌 0

This looks fantastic and I'd love to give it a try. Would you mind sending the access code? Thanks so much!

13.08.2025 15:08 👍 0 🔁 0 💬 0 📌 0
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GitHub - lcmen/hn-mcp: HackerNews MCP server built with Ruby HackerNews MCP server built with Ruby. Contribute to lcmen/hn-mcp development by creating an account on GitHub.

What's the best way to learn about some new concept? Building a project using it! Recently, I've been interested in MCP servers, so I built one with Ruby (and `fast-mcp` gem). It allows you to query HackerNews (as what else can you do on Friday 😅).

Code: github.com/lcmen/hn-mcp/

08.08.2025 14:51 👍 0 🔁 0 💬 0 📌 0
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My Zed settings My Zed settings. GitHub Gist: instantly share code, notes, and snippets.

I'm still switching between NeoVim and Zed but here are my settings and keymaps:

gist.github.com/lcmen/27a756...

04.08.2025 17:56 👍 2 🔁 0 💬 0 📌 0

No worries at all. Hope you feel better soon. Take it easy.

22.07.2025 16:55 👍 1 🔁 0 💬 0 📌 0

How is it going so far? Also, is the pro plan generous enough with its prompt limit? Do you know if it switches to simpler models like Cursor after reaching the limit?

22.07.2025 15:50 👍 0 🔁 0 💬 1 📌 0

Join our next KRUG meetup, powered by @rubycentral.org & Fastly, with venue support from Forte Digital

Talks:

- Michał Papis: Code UnCov & Pluginator
- @josevalim.bsky.social: Livebook - where Web, AI, and Concurrency meet

🗓️ June 10, 18:00
📍 Forte Space, Krupnicza 3, Kraków

🔗 RSVP lu.ma/0852jl2w

03.06.2025 16:45 👍 4 🔁 2 💬 0 📌 0

I'm glad you found it useful!

03.06.2025 16:37 👍 0 🔁 0 💬 0 📌 0

Good spot👌. Fixed!

01.04.2025 15:39 👍 0 🔁 0 💬 0 📌 0
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Understanding the Pin Operator and Macros in Elixir - Lucas Mendelowski Understanding the Pin Operator and Macros in Elixir by building custom DSL

Another idea inspired by the Ash Framework book: my journey into the pin operator and macros in #Elixir.

Check it out: www.mendelowski.com/blog/2025/03...

I'm not an Elixir expert, so I welcome feedback from more experienced Elixir folks. Hope you enjoy it!

31.03.2025 17:58 👍 7 🔁 4 💬 2 📌 0

That sounds awesome. I'm looking forward to it!

26.03.2025 17:51 👍 1 🔁 0 💬 0 📌 0

How is Zed so far? I personally moved to Cursor but still miss good old days with Neovim and tmux...

06.03.2025 16:57 👍 0 🔁 0 💬 1 📌 0

Hey @chastell.net, @tomash.eu mentioned that you were able to configure AI assistant in Vim (NeoVim?). Can you share your setup? Were you able to replicate VSCode / Cursor experience in applying changes from chat window to source files (Composer like behavior)?

06.03.2025 16:10 👍 2 🔁 0 💬 1 📌 0

Mine is only 278 with style of posting described as "Reply Guy" 😄. Social status: "Highly Engaging Explorer" with exceptionally high engagement, averaging 2.6 engagements per post across their follower base of 48.

Thanks for sharing the website, it's cool to see such summary!

20.02.2025 18:02 👍 1 🔁 0 💬 1 📌 0

Recently, I started reading the "Ash Framework" book. While building the example app, I spotted an area for improvement - leading to my first-ever contribution to the 🧪 Elixir ecosystem!

My changes to @ash-hq.org and `ash_postgres` are ready for release! 🚀

#MyElixirStatus

17.02.2025 19:28 👍 14 🔁 0 💬 0 📌 1
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KRUG #1 2025 · Luma Hello Ruby Enthusiasts! We're kicking off 2025 with a high-caliber Kraków Ruby Users Group (KRUG) meetup, featuring three fantastic talks you don't want to…

KRUG #1 2025 is here! Featuring three fantastic talks.

The event powered by Zendesk and serving as the unofficial kickoff to Ruby Community Conference.

📅 Feb 27, 2025 – 17:30
📍 Marii Konopnickiej 29, Kraków
🔗 More details here: lu.ma/dow2zgc5

Come for the talks, stay for the community 🚀!

13.02.2025 17:00 👍 3 🔁 1 💬 0 📌 0
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Wow... What a surprise! Look what I found in my mailbox.
Thank you so much, @inazarova.bsky.social !
That’s so kind of you.

PS. It’s also my birthday today, so you couldn’t have picked a better day!

02.01.2025 15:17 👍 2 🔁 0 💬 0 📌 1

What editor is that? How did you enable Prism for syntax checks? Thanks!

01.01.2025 09:06 👍 0 🔁 0 💬 1 📌 0