iiinova — where your digital self keeps evolving

Reposted by Jeroen Heijmans

Fronteers @fronteers.bsky.social · 25/09/2026

⏰ Last call for Fronteers Dark Mode 2026! Ticket sales close tomorrow, Saturday at midnight, and there are just 13 seats left. So if you’ve been thinking about joining us in Dordrecht next Friday, this really is your last chance. 🌑✨ 🎟️ www.fronteersconf.org We’d love to see you there! ❤️

Fronteers Dark Mode 2026, Friday, October 2, at Cinema De Witt in Dordrecht. An intimate evening of frontend talks and community from 3 PM until after midnight. Tickets €99 at fronteersconf.org. Collage showing Dordrecht, dinner, the Cinema De Witt venue and its red-seated screening room, with a QR code linking to the conference website.

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Jeroen Heijmans @jeroenheijmans.nl · 07/07/2026

"And is this hallucination in the room with us now?!", and 50 other questions I'd have for AI if AGI would actually become a thing. :P

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Jeroen Heijmans @jeroenheijmans.nl · 05/07/2026

GitHub Copilot Business, Claude Teams, ChatGPT business, ... All these AI management portals are a big hot mess. Overwhelming, underwhelming, scattered, unclear, wrong at times, barely usable most of the time. Almost as if they were vibe coded too hastily ':D

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Jeroen Heijmans @jeroenheijmans.nl · 11/06/2026

Organizing INFI-CON at @infi.nl today and the vibes at the office are off the chart :D Modded roomba's driving around, bicycles and mannequins, Winamp-style visualizers being tested.... 🤯😁 - and we haven't even started yet!

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Jeroen Heijmans @jeroenheijmans.nl · 02/06/2026

Just gimme a freaking password+2fa option, or if you must a passkey option, so I can use my password manager.

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Jeroen Heijmans @jeroenheijmans.nl · 02/06/2026

Absolutely insane that Claude makes me choose between (a) login with Google (I certainly don't want Google to be able to rug-pull access to all sorts of platforms), or (b) an email based login flow (with emails that arrive less than 10% of the time).

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Reposted by Jeroen Heijmans

Infi @infi.nl · 28/05/2026

Je twijfelt wellicht nog? Niet doen! Over twee weken op DO 11 JUN vanaf 13:00 is INFI-CON, en het wordt briljant! Keynote van Dylan Beattie, plus nog 4 presentaties over "briljante technologie"! Aanmelden kan op: con.infi.nl - tot dan!?

"INFI-CON 2026" header, daaronder "UTRECHT | DO 11 JUNI, vanaf 13:00" en mention van Dylan Beattie (Keynote).

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Reposted by Jeroen Heijmans

Dylan Beattie @dylanbeatt.ie · 07/05/2026

This is going to be an awesome event - Utrecht's such a great city, the tech scene in the Netherlands is excellent, and I'll be telling y'all the story of how a joke language based on Bon Jovi songs became a tour de force of modern software engineering.

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Reposted by Jeroen Heijmans

Infi @infi.nl · 07/05/2026

Our INFI-CON 2026 (June 11th) keynote is by none other than @dylanbeatt.ie, titled "How To Be a Rockstar Developer"! (Keynote will be in English, other presentations are a mix of Dutch and English.) - About Technology, but there might be actual rock involved!

Visual for a keynote, with text "INFI-CON 2026", and "UTRECHT | DO 11 JUNI, vanaf 13:00" followed by "Dylan Beattie (Keynote) - How to be a rockstar developer".

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Reposted by Jeroen Heijmans

Infi @infi.nl · 07/05/2026

DO 11 JUNI 2026 (vanaf 13:00) eindelijk weer: een INFI-CON! Gratis toegang, een (Engelstalige) keynote van Dylan Beattie, plus vier andere sprekers (Nederlands en/of Engels) over tech die briljant en absurd tegelijk is! :D #Infi #Utrecht Info en aanmelden op: con.infi.nl

INFI-CON 2026 poster, tagline "De 'Crazy Con' editie: over tech die briljant en absurd tegelijk is". Verdere teksten op de poster: Donderdag 11 juni 2026 vanaf 13:00. Infi Utrecht, Arthur van Schendelstraat 500, Utrecht. Met 4 infi-nerds, 1 keynote, +jij? Vier sprekers in een line up over shaders, ComfyUI, Roombas, en een Keynote van Dylan Beattie "How to Be a Rockstar Developer".

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Jeroen Heijmans @jeroenheijmans.nl · 28/04/2026

Farewell ConEmu! <3 You've been a great help for the past 10ish years, but the built in Terminal on the Windows machines I still have (for now :D) seems good enough to be back at 'stock' tooling.

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Jeroen Heijmans @jeroenheijmans.nl · 27/04/2026

I like this new "minimum release age" feature in all package managers. But... once everyone will be using it, who will then feel out the supply chain attacks? 🤔😅 Or are there enough security scanners around to find things in an automated fashion?

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Jeroen Heijmans @jeroenheijmans.nl · 14/04/2026

Shocking how few truly FOSS apps I have on my Android phone. Less than 1/8th or so, if even that. 😔

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Jeroen Heijmans @jeroenheijmans.nl · 13/03/2026

Closing keynote by @derickr.phpc.social.ap.brid.gy titled "Own your content"! 💯 That also wraps up my thread of #DPC26 / #WDC26 / #ADC26 sketch notes!

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Jeroen Heijmans @jeroenheijmans.nl · 13/03/2026

After that some Twig in "The Symfony Frontend" by Rick Kuipers...

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Jeroen Heijmans @jeroenheijmans.nl · 13/03/2026

Continuing after lunch with Ondrej Mirtes about Generics in PHP...

Sketch notes around phpstan and generics

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Jeroen Heijmans @jeroenheijmans.nl · 13/03/2026

Lunch break time! Catch y'all later with the afternoon sketches!

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Jeroen Heijmans @jeroenheijmans.nl · 13/03/2026

And finally before lunch Pieter Jordaan presented about File Uploads in REST APIs...

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Jeroen Heijmans @jeroenheijmans.nl · 13/03/2026

Then "Git away with murder" by Sergès Goma:

Sketch notes with many speech bubbles around git terms

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Jeroen Heijmans @jeroenheijmans.nl · 13/03/2026

After that I visited the talk by @conroyp.bsky.social on modern php features.

Sketch notes for talk titled "modern php features"

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Jeroen Heijmans @jeroenheijmans.nl · 13/03/2026

Opening keynote by @johanjanssens.bsky.social with a little history and a bunch of future!

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Jeroen Heijmans @jeroenheijmans.nl · 01/03/2026

Had a ton of fun today rapid prototyping useful but throwaway code in a mini-game codebase! I knew far too little Rust to hand-craft things, and GenAI enabled prototyping pretty complex features very quickly. :D

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Jeroen Heijmans @jeroenheijmans.nl · 28/02/2026

Tried the Stack Overflow AI features in the "new" mode, but I feel like it needs quite a bit of work still...

Screenshot of partial Stack Overflow response with some sensible AI-generated text and code, but also major blocks that just say "unidentified" and nothing else.

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Jeroen Heijmans @jeroenheijmans.nl · 27/02/2026

In almost all queries to LLM's I will start with: "Anno <month+year>, ..... <actual query here>." Plus, my custom instructions tell it to lead in answers with its knowledge cutoff point. That way it'll realize in time that searching for up to date info is needed for a proper answer.

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Reposted by Jeroen Heijmans

Kevin Powell @kevinpowell.co · 25/02/2026

Make sure to fill in your brackets!

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Jeroen Heijmans @jeroenheijmans.nl · 24/02/2026

The "SKILLS" stuff may have been "standardized" but not all tools follow it equally. I'm sure it'll even out soon enough, but for now having different tools on different machines can be a hassle!

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Jeroen Heijmans @jeroenheijmans.nl · 19/02/2026

Using Teams at a client, when usually using Slack, is... a learning experience ':D For every 9 features where Slack's superior, there's 1 where Teams takes the win. (And they are nearly never on par with each other.)

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Jeroen Heijmans @jeroenheijmans.nl · 18/02/2026

Ralph loops and similar flows where GenAI agents leave instructions for their future "selves" makes me wanna rewatch Memento! :P

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Reposted by Jeroen Heijmans

Fronteers @fronteers.bsky.social · 15/02/2026

+++ Tickets are now on sale for Fronteers Dark Mode 2026! 🥳 +++ 📍 Oct 2 · Cinema de Witt, Dordrecht 🕒 3PM – ~midnight 🎤 5 talks 🍽️ 2-course dinner included Relaxed after-work vibes, long breaks & great conversations. 🎟️ €99 👉 fronteersconf.org (Fronteers members: €49)

Promotional banner for “Fronteers Dark Mode” with the headline “Friday night. Frontend. Fronteers Dark Mode!” in bold black text on a bright yellow speech-bubble shape. Below it, the text invites people to join on Friday, October 2nd 2026, at Cinema De Witt in Dordrecht for an intimate evening of frontend talks and community vibes from 3PM to after midnight. The background shows a lively evening courtyard scene outside a cinema, with people sitting at tables, chatting under warm string lights, and a modern glass entrance glowing in the night. Colorful decorative shapes frame the top corners of the image.

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Jeroen Heijmans @jeroenheijmans.nl · 01/02/2026

On a train towards home, topped up with inspiration!

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Jeroen Heijmans @jeroenheijmans.nl · 01/02/2026

Presentations by: @thomasdarimont.bsky.social, Edward Ly, @ahus1.de, Marco Bernasocchi, @marcprux.bsky.social, @diacritica.bsky.social, Jeremy Jongepier, @danielizquierdo.bsky.social and Jesus M. Gonzalez-Barahona, @dtemkin.bsky.social, and @daniel.haxx.se Montage of all sketch notes here:

Almost overwhelming mega image with 2x5 pages of sketch notes, stitched together.

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Jeroen Heijmans @jeroenheijmans.nl · 31/01/2026

Visited talks by: Michiel Leenaars, Patrick Steinhardt, @alphare.bsky.social and Pierre-Yves David, aysha and Torsten Grote, Fabio Giovanazzi and @flypig.bsky.social, Effie Mouzeli, @mikemcquaid.com, Robert Schulze, @malemburg.bsky.social, and Emma Delescolle. Tiled version of Mastodon thread:

10 tiled sketch notes in a guge poster format, doodles of various FOSDEM talks. Many scattered terms and sketches in an almost overwhelming picture.

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Jeroen Heijmans @jeroenheijmans.nl · 17/12/2025

The best "solution" to stop Gemini from inlining YouTube tutorials at the end of answers is seemingly a custom instruction to always replace the video URL with the rickroll URL. 🫠

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Jeroen Heijmans @jeroenheijmans.nl · 13/12/2025

The #AdventOfCode 2025 (unofficial) Survey Results are live! 😁🎄⭐⭐ Results at: jeroenheijmans.github.io/advent-of-co... Feel free to give this Reddit post some love too: www.reddit.com/r/adventofco...

jeroenheijmans.github.io

AoC (Unofficial) Survey Results

Results dashboard with the yearly (unofficial) Advent of Code participant survey

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Jeroen Heijmans @jeroenheijmans.nl · 12/12/2025

Need some sleep and a few more hours of work this weekend to get the full thing finalized and published. Stay tuned!!

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Jeroen Heijmans @jeroenheijmans.nl · 12/12/2025

Tiny teaser for the #AdventOfCode survey results that are coming up this weekend! I'm *amazed* at how stable the main results for "Reasons to participate" are. For 8 years in a row every answer gets picked roughly by the same % of people! 😲 Somehow I'd expected at least *some* fluctuations!

Colorful bar chart showing series for 2018 through 2025, and clustered bars for those series. Each cluster remains stable at the same height with minor fluctuations. Categories like "For fun" and "For a challenge"

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Jeroen Heijmans @jeroenheijmans.nl · 11/12/2025

Already had a strong dislike for Claude's email-sign-in-only setup (just gimme username + password + totp, will ya!?), and now that I want to try something we can see why.... "We have trouble delivering mail to some providers, check your spam or try again later!" Right.

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Jeroen Heijmans @jeroenheijmans.nl · 11/12/2025

Using [company]@[mydomain.nl] for accounts is a fantastic first line of defense against phishing and its likes. E.g. receiving a "Bank Trouble" email on my "LinkedIn" email address immediately puts me on guard. I can almost always disregard "From" when receiving mail, and look at the "To" field.

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Jeroen Heijmans @jeroenheijmans.nl · 11/12/2025

Final call for my #AdventOfCode survey of 2025! If you haven't already, fill it out at forms.gle/TAgtXYskwDXD... plz! I hope to close it and start working on results late on the 12th, and to have the results shortly thereafter. Stay tuned :D

forms.gle

Unofficial Advent of Code 2025 Survey

This is a quick (unofficial) Advent of Code 2025 anonymous (if you don't disclose your identity in "Other..." answers) participant survey. Note that your data will be shared as part of a (possibly san...

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Jeroen Heijmans @jeroenheijmans.nl · 06/12/2025

<3 to the person who answered in my #AdventOfCode survey that they participate in AoC.... "To participate in this survey" 🙃

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Jeroen Heijmans @jeroenheijmans.nl · 06/12/2025

Yeah, i post process things! So e.g. comma separated should work 👍🏻

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Jeroen Heijmans @jeroenheijmans.nl · 06/12/2025

Fair warning: there's questions about ✨EMOTIONS✨ (you may feel while puzzling) this year! 😅

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Jeroen Heijmans @jeroenheijmans.nl · 06/12/2025

Thanks to @was.tl we are enjoying #AdventOfCode again in 2025, and I am also running the unofficial/community survey again in 2025! 😊 💡 Take care that it closes "early", late Dec 12th or thereabouts! Consider filling it out if you haven't already: forms.gle/TAgtXYskwDXD...

forms.gle

Unofficial Advent of Code 2025 Survey

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