Arjen (a.k.a. credmp) @arjenwiersma.nl · 10/12/2025Made an interactive, incomplete, history family tree of editors. Any additions or anecdotes are welcome. See it in action: arjenwiersma.nl/editors.html it has #emacs #vim #basic #cpp editors galore! 031
Arjen (a.k.a. credmp) @arjenwiersma.nl · 24/11/2025Npm, the gift that keeps on giving. Another mass ransomware attack; helixguard.ai/blog/malicio... 010
Arjen (a.k.a. credmp) @arjenwiersma.nl · 07/11/2025Hey #Java #Emacs users, I am trying to smoothen my workflow. One thing that annoys me is to go to mvnrepository.com to look up a package. I am creating a little helper for it, anyone interested? 041
Arjen (a.k.a. credmp) @arjenwiersma.nl · 06/11/2025I gave my workshop at #jfall2025 #jfall today. It was a success, a packed room and people working through my AI challenges for 2 hours. If you attended you might like the slides, they are available on my talks page: arjenwiersma.nl/talks/arjenwiersma.nlArjen WiersmaTalks I occasionally speak at conferences and meetups. Below are some of my active talks that I am presenting. If you would like me to present at your conference or meetup, feel free to contact me. 000
Arjen (a.k.a. credmp) @arjenwiersma.nl · 06/11/2025Just finished up my workshop at #jfall #jfall2025! Great crowd and lots of interaction, even in the silent disco setup! 010
Arjen (a.k.a. credmp) @arjenwiersma.nl · 01/11/2025I made an update to my #emacs upiv package from yesterday, it now supports marginalia mode for even nicer support with configuring use-package. URL: forge.arjenwiersma.nl/arjen/upiv 050
Arjen (a.k.a. credmp) @arjenwiersma.nl · 30/10/2025The code is available as a package now: forge.arjenwiersma.nl/arjen/upiv/forge.arjenwiersma.nlupivEmacs package to insert custom variables into the use-package form with their current value. 011
Arjen (a.k.a. credmp) @arjenwiersma.nl · 30/10/2025I so love my #emacs, was configuring some packages and wanted something easier, so I wrote a small function that will look up all the custom variables for a package and provide them as completion, allowing you to easily insert them. Trying to be more like @xenodium.bsky.social by sharing. 182
Arjen (a.k.a. credmp) @arjenwiersma.nl · 22/10/2025Thanks for still making the puzzles! I have loved the first ten years. I will still be there December 1st :) 000
Arjen (a.k.a. credmp) @arjenwiersma.nl · 16/10/2025Hier heb ik even goed om moeten lachen, goed geprobeerd Wouter! 130
Arjen (a.k.a. credmp) @arjenwiersma.nl · 13/10/2025Nicely done! We need more people spreading the good news :) 110
Arjen (a.k.a. credmp) @arjenwiersma.nl · 13/10/2025Agree with this, having lived through all busts up to now I think the dotcom gave us the infrastructure of modern days 010
Arjen (a.k.a. credmp) @arjenwiersma.nl · 12/10/2025During my talk at #devoxx I talked about how big systems leak data through bad #ai implementations, this morning I read about copilot for GitHub: www.legitsecurity.com/blog/camolea... it never stops…legitsecurity.comCamoLeak: Critical GitHub Copilot Vulnerability Leaks Private Source CodeGet details on our discovery of a critical vulnerability in GitHub Copilot Chat. 010
Arjen (a.k.a. credmp) @arjenwiersma.nl · 12/10/2025I felt the same, when I arrived I went to see the talk in room 9 and I remember thinking about the sheer volume of people that can sit in a theater. During my talk it was packed with people sitting on the stairs as well. 010
Reposted by Arjen (a.k.a. credmp)SDG @stevendegroote.bsky.social · 08/10/2025Ranking of different types of developers #vibecoding #devoxx #useyourbrain 032
Arjen (a.k.a. credmp) @arjenwiersma.nl · 08/10/2025Had an amazing time presenting at #Devoxx! The room was packed, with some people sitting on the stairs, if the favorites are anything to go by there were over 300 people in the room. The talk was rated 4.7 out of 5, which for me is amazing, thank you all so much! 050
Arjen (a.k.a. credmp) @arjenwiersma.nl · 06/10/2025My talk at #Devoxx is up to 69 ❤️! Nice! Hope to see you all on Wednesday! 040
Arjen (a.k.a. credmp) @arjenwiersma.nl · 25/09/2025Damn, that was fast! Almost as popular as Taylor swift :) 000
Arjen (a.k.a. credmp) @arjenwiersma.nl · 21/09/2025Love this article on a new industry; cleaning up vibe coded projects donado.co/en/articles/...donado.coVibe Coding Cleanup as a ServiceThe rise of AI-powered coding has created an unexpected market: cleaning up the technical debt from prompt-generated software. Here's why 'Vibe Coding cleanup' is becoming a legitimate service categor... 000
Arjen (a.k.a. credmp) @arjenwiersma.nl · 09/09/2025That I did not know! Any links to articles about it? 110
Arjen (a.k.a. credmp) @arjenwiersma.nl · 04/09/2025Hey you Java person! Are you going to @devoxx.com ? Be sure to visit my talk on the security side of vibe-coding. Check it out in the app: www.devoxx.be/app/talk/325...devoxx.beDevoxx Companion App – Devoxx Belgium 010
Arjen (a.k.a. credmp) @arjenwiersma.nl · 04/09/2025The downside of this story is that the ceo is firing everybody who is not using AI :/ 000
Arjen (a.k.a. credmp) @arjenwiersma.nl · 04/09/2025In april Microsoft said 30% of their code was written by AI, coinbase is pushing even further with 40% and aiming for 50% by October. Massive numbers, but still in a controlled way (reviewed) 110
Arjen (a.k.a. credmp) @arjenwiersma.nl · 04/09/2025Tonight I will be presenting at the #DevPulse meetup in the city of Zwolle. See you there! 000
Reposted by Arjen (a.k.a. credmp)Devoxx Belgium @devoxx.com · 28/08/2025📅 The wait is over: the #Devoxx Belgium 2025 schedule is out! Plan your week, pick your favourites ❤️https://m.devoxx.com/events/dvbe25/schedule 02318
Reposted by Arjen (a.k.a. credmp)Adam Jacob @adamhjk.me · 22/07/2025Rest well, Ozzy. Everyone listen to Tribute in his honor today. music.apple.com/us/album/tri...music.apple.comTribute (Live) by Ozzy Osbourne on Apple MusicAlbum · 1987 · 14 Songs 173
Arjen (a.k.a. credmp) @arjenwiersma.nl · 11/07/2025It is quite interesting. For those who do not want to read the full paper; they had a largish project (1m+ lines) and had issues given AI and no-AI status. They measured experienced developer time on the resolving of the issues. Predictions were to have a speed up, result was that it took 19% longer 121
Arjen (a.k.a. credmp) @arjenwiersma.nl · 23/06/2025Just posted my first of 12(!) parts on AI Security. A bite-sized deep-dive into AI security delivered right into your mailbox from my substack. Check it out: credmp.substack.com 011
Arjen (a.k.a. credmp) @arjenwiersma.nl · 09/06/2025For me #clojure is like stoic philosophy, leading a simple and humble life in the #repl. 020
Arjen (a.k.a. credmp) @arjenwiersma.nl · 02/06/2025Good question. It seems it also somewhere countryside and at the very end he says he has anxiety (as a serious thing, not just as being anxious)… 100
Arjen (a.k.a. credmp) @arjenwiersma.nl · 18/05/2025EU ruling: tracking-based advertising across Europe has no legal basis. A massive ruling that is effective right away, means that organisations that rely heavily on advertisement (such as dpg/nu.nl in the Netherlands) will have to review and adjust their practices. www.iccl.ie/digital-data...iccl.ieEU ruling: tracking-based advertising by Google, Microsoft, Amazon, X, across Europe has no legal basis - Irish Council for Civil LibertiesLandmark court decision against “TCF” consent pop ups on 80% of the internet 000
Arjen (a.k.a. credmp) @arjenwiersma.nl · 18/05/2025Remember how Microsoft said it would go to court to protect European interests if faced with American orders to work against it? Seems it was not entirely true: www.techradar.com/pro/microsof... www.pbs.org/newshour/wor... “Microsoft, for example, cancelled Khan’s email address”.techradar.comMicrosoft says it would take the US to court to protect European cloud operations | TechRadarMicrosoft makes five promises to European customers 021
Arjen (a.k.a. credmp) @arjenwiersma.nl · 08/05/2025Every once in a while I try different knowledge management systems, recently I have been using #logseq, but I always come back to the simplicity of my #emacs setup with org-roam… 020
Arjen (a.k.a. credmp) @arjenwiersma.nl · 05/04/2025Went shopping for comics today, completed my 1-100 series for Spawn and added a good chunk for 100-200. Kinda feels like Christmas. #comics #spawn 000
Arjen (a.k.a. credmp) @arjenwiersma.nl · 25/03/2025True story! I was also thinking about making a fediverse version of meetup, it seems like a good fit, but never had enough time to explore the idea fully 000
Arjen (a.k.a. credmp) @arjenwiersma.nl · 25/03/2025I use meetup now, but it is seriously lacking. Keep up the work! 110
Arjen (a.k.a. credmp) @arjenwiersma.nl · 13/03/2025Today I was at the futuretech conference in Utrecht. Really liked @fonssonnemans.bsky.social talk about performance analysis. 121
Arjen (a.k.a. credmp) @arjenwiersma.nl · 29/01/2025Using @openvibe.social feels to me like using eBuddy back when there were a lot of instant messaging apps. Everything neatly in a single space, one user experience. Very nice so far. 130
Arjen (a.k.a. credmp) @arjenwiersma.nl · 30/12/2024Do we know anyone at @digitalocean.com here? Their app platform has a provisioning issue that renders postgres 16 dev databases useless and their support is not particularly helpful. Any help in my network is appreciated! #digitalocean #postgresql 000
Reposted by Arjen (a.k.a. credmp)Slashdot @slashdot.org · 10/12/2024Hey it'd be super cool if you reposted this post to let all your cool friends know that @slashdot.org is on Bluesky now! 207860
Arjen (a.k.a. credmp) @arjenwiersma.nl · 15/12/2024Day 15 of #adventofcode was quite a puzzler. Rewrote my solution several times. I take solace in the fact that the fastest solvers needed 15 minutes, which means the problem was hard. My notes on my #Java solution are here: arjenwiersma.nl/posts/aoc-20...arjenwiersma.nlAdvent of Code 2024It is December again and that means it is time for the Advent of Code. Due to my workload and family obligations I will probably not be able to get very far this year, but still I wanted to write a po... 041
Arjen (a.k.a. credmp) @arjenwiersma.nl · 14/12/2024My #adventofcode in #java notes for Day 14 are up. This day has some math with modulo for wrapping around grids, also, Java module does things with negative numbers. Check out the notes here: arjenwiersma.nl/posts/aoc-20...arjenwiersma.nlAdvent of Code 2024It is December again and that means it is time for the Advent of Code. Due to my workload and family obligations I will probably not be able to get very far this year, but still I wanted to write a po... 151
Arjen (a.k.a. credmp) @arjenwiersma.nl · 13/12/2024My notes on day 13 of #adventofcode in #java are up. Today I used math to solve the problem: arjenwiersma.nl/posts/aoc-20...arjenwiersma.nlAdvent of Code 2024It is December again and that means it is time for the Advent of Code. Due to my workload and family obligations I will probably not be able to get very far this year, but still I wanted to write a po... 031
