Ruby

*Talk by Abraham W.* Martin-Löf's meaning explanations provide an approach to understand mathematical statements as statements about functional computer programs. Furthermore, meaning explanations can be used to justify the inference rules of intuitionistic type theory. *As usual, there's mingling at the local bar after the talk.*

**👉Do Not Hesitate To Join the Waitlist — We will try to find room for everyone...👈** **This event is a memorial gathering, a wake** to the planned — but now cancelled [DevOpsDays Copenhagen 2026](https://www.devopsdays.dk/events/drink-up-2026/). **The event is free to participate - SEATS ARE LIMITED TO 40!** **Program (start 17:00 SHARP, arrive and be seated before that!)** * **Welcome** + 1 minute of silence for the deceased DevOpsDays * **Lessons from 10 years of Platform Engineering** by Kris Buytaert * **Table discussions** — "What the heck is going on in the DevOps Community right now?" * **Summary** on table discussions * **Outro** — The current status of the transformed Danish DevOpsDays Association and a glimpse into what the future will bring It ends at the "Workbar" no later than **19:00** but if we're still a decent crowd we will continue onward for a burger or a pizza. **Keynote:** [Kris Buytaert](https://www.devopsdays.dk/profiles/kris-buytaert/) is flying in from Belgium to deliver his planned Keynote [Lessons From 10 years of Platform Engineering ](https://www.devopsdays.dk/talks/lessons-from-10-years-of-platform-engineering/) **Post Mortem:** We had to cancel the planned two-day DevOpsDays conference, simply due to lack of interest from audience. This is the canary in coal mine; DevOps(Days) choked. Let's do a post mortem. Platform Engineering is the new DevOps — so we're told. *"No — that's Ops, not DevOps".* Where did all the *"You Build It You Run It"* hype go? We will kick off discussions on this topic at the tables - while you sip your funeral beer. **Phoenix rising:** — The Danish DevOpsDays Association has a new charter, new bylaws, a new purpose. We, the organizers, will lay out our plans for the future and encourage you to join. **Context:** [DevOps is Broken](https://www.devopsdays.dk/stories/devops-is-broken/)

Welcome to the first M-PUG session of the year as we kick off spring in Sweden! Join us for an evening of practical AI and PostgreSQL discussion, community, and good company. We'll be gathering at the ground floor of Minc, and whether you're a longtime member or joining us for the first time, we’re excited to reconnect with the community and start the year with an insightful session. **Title:** Boring is Better: Building RAG with PostgreSQL as a Vector Database **Abstract:** Retrieval-Augmented Generation doesn't need the shiniest vector database. PostgreSQL with pgvector gives you everything you need: fast similarity search, native indexing, and - most importantly - one less system to operate. We'll show how to build production RAG applications using the database you already know and love, without the operation complexity/overhead/hype of dedicated vector stores. See if PostgreSQL is the boring choice that makes sense for your team's AI development workflow. **Speaker:** Ali Jahangiri brings a decade of expertise with electron driven innovation - from atomic scale transistor fabrication, to physical AI solution development at Arduino and high performance computing systems. As a Machine Learning PhD candidate at Lund University and affiliated member of the ELLIIT (Linköping-Lund initiative on IT and mobile communication) centre of excellence, Ali is advancing the sustainable AI frontier by developing smaller, faster and more energy-efficient machine learning architectures. **Agenda** 17:15 - 17:30: Guest arrival 17:30 - 18:15: Presentation 18:15 - 19:30: Pizza and networking

**Guests: Registration on email is required before attendance** Guests are most welcome to join our meetings, but attendance must be registered by email to [copenhagen@toastmasters.dk.](http://copenhagen@toastmasters.dk.%2A%2A/) Please come 10 minutes before the meeting start. We start at exactly 18:00. Welcome to ***Copenhagen Toastmasters Club*** Looking to improve your speaking and communication skills? Ignite your career? Gain the confidence to speak up? You’ve come to the right place. **Our meetings for 2026 from April to June:** • Wk 15: 7. april • Wk 17: 21. april • Wk 19: 5. may • Wk 21: 19. may • Wk 23 2. jun. • Wk 25 16. jun. **Our history** The *Copenhagen Toastmasters Club* was established in June 1996 by a group of dedicated people. We are the first Toastmasters club in Denmark. We are part of the Toastmasters International which is a nonprofit organisation that helps people to improve public speaking. **Our goals** *Copenhagen Toastmasters Club* will give you the skills and confidence you need to express yourself effectively in any situation. Toastmasters is the most efficient, enjoyable and affordable way of gaining great communication skills. You'll learn how to: * Formulate and express your ideas effectively * Be more persuasive and confident when giving presentations * Improve your one-on-one dealings with others At *Copenhagen Toastmasters Club*, you'll get to practice your skills by organising and conducting meetings and motivating others to help you. Become a better negotiator. Gain trust. Inspire your team. **Want to know more about *Copenhagen Toastmasters Club*?** [Facebook](https://www.facebook.com/CopenhagenToastmasters) , [LinkedIn](https://www.linkedin.com/company/2480522/admin/dashboard/) [Toastmasters International - global network](https://www.toastmasters.org/)

Join us for an hour of writing! We’ve discovered that it’s strikingly helpful to write with other writers. See if it’s true for you at our Copenhagen Shut Up & Write! sessions. Be it a book, blog, script, essay, dissertation, résumé, melody, poem, or just plain work stuff, you are invited to write it with us. No one will see what you've written or give you unsolicited advice. Instead of just thinking about writing, come and get some real writing done. SCHEDULE: - 15 minutes of hellos and getting settled; maybe some quick intros. - Then, the timer starts! : writing for 1 hour. - After the hour is up... chat / take off / keep writing, if you're on a roll. OPTIONAL SOCIALIZING happens once the hour of writing is complete. Writing can be very solitary... connecting (and sometimes even commiserating) with other writers is a cool thing. It's best to be on time, but BEING LATE IS ALSO OKAY: just show up and get settled, then check in with us after the session. (We’ll be the ones with the small Shut Up & Write! sign.) If you were on time, please be willing to make room for the friendly latecomer. What Should I Bring? Whatever you need to be able to write! Bring earbuds/earplugs if you want to block the cafe’s overhead music or the occasional conversation by other patrons.

**Co-working for writers in Amager!** Join us for an hour of focused writing time. All writers and all experience levels are welcome and don’t worry, no one will see what you've written. This session is about getting your writing done and meeting other writers in the area. We meet in this lovely spacious café, chilled out, usually not very busy at this time, with an on-site bakery of delicious pastries. Once everyone is here and settled, I will lead a quick introduction, and then set the timer for our quiet and focused writing session. After the hour is up feel free to chat / take off / keep writing if you're on a roll. We often talk about our successes and challenges as writers, and it can be a great way to learn from eachother. **A note about the format** We don’t host critiques or readings. These events are a safe space for writers of all skill levels and genres to work on their craft, so no one will read or critique your writing. For our full event schedule, visit [https://shutupwrite.com](https://shutupwrite.com) **Practical Details:** WiFi name / password: Kasada / haveaniceday Travel / Parking info: Kasada is just a few minutes walk from Lergravsparken Metro Station. We've reserved the large round table in the main room, with power outlets if you need one. Venue Guidelines: Please thank our hosts by purchasing something.

We are a group of people meeting on Tuesdays to socialize around cooking and eating together. Usually around 40-50 people. Many are international students, but also other people join. The foodclub exist independent of Meetup, we invite you because we have room for a few more people. The food is vegan and made from donated leftover veggies from a local greengrocery. The place has originally hosted leftwing activist groups, and many of the people joining are also involved in political groups. If you want to join for chopping and cooking, we will be doing that from 3 to 6 pm. It is possible to join part of the time. From 6:30 to 8pm we are serving food. Donation around 30 kroner. If you are helping out some hours, chopping, cooking or cleaning, you can eat for free. From 8 to 9 - 9:30 pm we are cleaning up the place. We hope to see you in our lovely foodclub <3

We are looking forward to welcoming you to Rust meetup #67! This month is currently lacking a food sponsor, but there will be something to eat. RSVPs open a week before the meetup. The agenda for the night is outlined below: 18:05–18:15: Welcome! 18:15–19:00: Gary Coady: **Huskarl: A Modern OAuth2 Ecosystem** 19:00–19:45: Food Break, sponsored by the organizers (and/or you?) 19:50–20:35: Ahmad Sattar Atta & Sebastian Holmgaard: **From camel to crab: Compiling Async RaTT to WebAssembly with ComRaTT** 20:35-21:00: Closing and Cleanup. 21:00-???: Bar Make sure to bring your best energy for a cozy evening in great with other Rust enthusiasts, professionals and amateurs alike! We look forward to seeing you all! 🦀

Viviane and Xavier are visiting from the Unity Montreal office, and they have kindly offered to give a talk about using machine learning inference in Unity games (actually same talk which will also be given internally) **Xavier Désilets** \- Senior Software Developer\, Unity **Viviane Rochon Montplaisir** \- Senior Software Developer\, Unity Are you a game dev who keeps hearing words like "tensors" and "logits" and quietly alt-tabs back to your prefab folder? This session is for you. In the first half, we'll do a fast, practical ML 101 specifically for game developers. We'll cover what tensors actually are (in human language), quantization, how model graphs work, and what to make of different model formats. In the second half, we'll focus on the decisions you have to make to ship something: how to pick a model size that won't set your players' fans on fire, what formats and hardware are supported, and how to think about speed vs. quality. We'll walk through real-world input and output pipelines. We'll ground this with currently available Unity Sentis samples. By the end, you won't be a data scientist, but you will know how to choose, run, and wire up ML models at runtime in Unity without breaking your frame budget or your brain. **Program:** 17:30 - Sandwiches, sodas and mingling 18:00 - Welcome 18:10 - Presentation 19.15 (approx.) - Mingling continues 21:30 - Venue closing

\#\# 🔐 **Registration** **IMPORTANT:** This event is free, but please register on the UXDX site so we can confirm numbers and manage access to the venue: [https://uxdx.com/community/community-copenhagen-2026-04-29/](https://uxdx.com/community/community-copenhagen-2026-04-29/) Join the **Copenhagen UXDX Community** for an evening exploring how teams can scale products more effectively while rethinking the role of UX in a changing landscape. This is a practical meetup for people across **Product, UX, Design,** and **Dev** who want to learn from real examples, challenge assumptions, and connect with others building digital products today. \*\*\* \#\# 📅 Agenda **16:45 to 17:00** \- Registration and networking **17:00 to 17:15** \- Welcome by UXDX Ambassador Hosted by Tasha Melchior, VP Product at Everway **17:15 to 17:45** \- Scaling Product Methodology from Startup to Scaleup\, Anneli Bartholdy **17:45 to 18:15** \- Networking and snacks **18:15 to 18:45** \- Will AI Kill UX? Tobias Jensen **18:45 to 19:00** \- Closing and networking \*\*\* \#\# ✨ **Talk 1:** Scaling Product Methodology from Startup to Scaleup **Anneli Bartholdy,** Head of Product, UBsend Most companies fail during the scaleup transition. For businesses whose success depends on digital products, the way Product works through discovery, design, development, and launch can make all the difference. In this talk, Anneli will walk through the key components of working with Product as a company grows, highlighting the questions, decisions, and actions that need to evolve at each phase. Drawing on case stories from European businesses, she will share where teams often get stuck, and what helps them scale more successfully. She’ll cover: How product ways of working need to evolve from startup to scaleup What changes across discovery, design, development, and launch The common risks that can derail product growth What successful teams do differently during the transition \*\*\* \#\# ✨ **Talk 2:** Will AI Kill UX? **Tobias Jensen,** UX Design Manager, Visma AI is changing the craft of design at speed, raising big questions about which skills will remain essential and what the future of UX will actually look like. In this talk, Tobias will tackle those questions head-on, using real-life examples from Visma e-conomic, Denmark’s largest accounting platform serving more than 270,000 customers. It is an honest look at what is changing, what still matters, and what designers should be thinking about now. He’ll cover: Which parts of UX are most under pressure from AI What skills and practices will continue to matter How AI is changing the day-to-day reality of design work What teams can take back into their own organisation \*\*\* \#\# About UXDX UXDX helps teams move from project delivery to empowered, autonomous product teams. We host global conferences and free community events that bring together UX, Product, Design, and Engineering to share how real teams build better products, faster together.

https://www.facebook.com/korsgadesprogcafe/ Come and join our cosy language cafe. We recommend that you already speak some Danish (maybe around module 3 on sprogskole) so you can join and understand the conversation. We are mostly two Danes joining, so we can make two groups: beginners and more advanced. We are having conversations while drinking tea. If you have an exam coming up, we can speak about your exam subjects some of the time. Small donations (10-20 kroner) are appreciated, to support the rent of the place. You find us in the basement of Korsgade 19. It is a door to the right of the main entrance.

**𝗗𝗘𝗔𝗥 𝗪𝗢𝗥𝗟𝗗 – the international week-breaker** Your favorite after-work/after-uni bar night to connect, relax, and meet amazing people at ease. for context (as frequently asked): ***\- we are always many more people than sign up here on meetup as most traffic and updates happen on IG*** ***\- average age range is from 20\-30 \(everyone is welcome\)*** Yet another amazing year of Dear World the way we know it - together! At Bodega, we stocked up on board games to get cozy and competitive while social of course. 📸 IG @dearworldcph (for impressions from past events!) As the days are colder and shorter, we’re bringing the energy to our nights – with over 100+ at our bar nights and 200+ at our parties, 𝗗𝗘𝗔𝗥 𝗪𝗢𝗥𝗟𝗗 keeps growing! For almost 2 years now, we’ve been uniting Copenhagen’s international crowd (and locals) – countless nationalities, shining in different languages 🌍 Think easy-going conversation starters like flags, rotating chat charms & playful questions – all designed to spark great chats and eliminate any awkwardness. 📍 BODEGA DANZA, Flæsketorvet 13A, 1711 Copenhagen 🕖 When: starting at 19:00 (hosts & stickers until 22:00, the night continues however long you like) Let’s raise a glass, meet familiar and new faces, and break the week – together 🥂 𝗗𝗘𝗔𝗥 𝗪𝗢𝗥𝗟𝗗 The space for internationals and open-minded locals to connect in Copenhagen. Whether you’re looking to socialize, network, make friends, or simply vibe – just show up. Come solo or bring your crew – we’ve got you. Got questions? DM us on Instagram @dearworldcph or reach out to the host here. Let’s make Wednesdays the new favorite day of the week 🌇

Important note: we will be changing venue every other week (from Main Library on Thursdays to Nørrebro Library on Fridays), so please check event details. **Dear Expat (or Dane!),** Looking for a job in Denmark? Whether you’re new to the country or seeking to advance your career, this session is designed to help you navigate the Danish job market with confidence. Join us for practical insights on: · Tailoring your CV for Applicant Tracking Systems (ATS) and Danish employer expectations. · Leveraging LinkedIn and networking strategies to uncover hidden job opportunities. · Understanding Danish workplace culture and what employers value most. This workshop is perfect for expats at all career stages, from newcomers to seasoned professionals. You’ll leave with actionable tips, a stronger network, and the tools to make your job search more effective. Looking forward to connecting with you, **Maria Depesova** Your Host & Expat Community Builder

Come out to Improving for our monthly iOS and Mac meetings. This Month's Presentation: Nothing yet. (You should volunteer). What is Cocoaheads (http://cocoaheads.org/)? CocoaHeads is a group devoted to discussion of Apple Computer's Cocoa Framework for programming on MacOS X and iOS (including the iPhone, iPad and Apple Watch). During monthly meetings, members present on their projects and offer tutorials on various programming topics. What is BuckeyeCocoa (http://buckeyecocoa.org/)? BuckeyeCocoa is a group of Objective-C/Swift developers/enthusiasts. We host monthly Cocoaheads and near-weekly NSCoder meetings in Columbus, Ohio. The meetings are free to attend. Presentations! Presenters welcome! We are always in need of people willing to present material. Any Swift and/or Objective-C related topic is welcome. Times can be 5 minutes (i.e. lightning talks) to a maximum of 2 hours. Interested? Contact info is on the BuckeyeCocoa website. To volunteer for a presentation contact us at @BuckeyeCocoa on Twitter. Follow us on Twitter! @BuckeyeCocoa (https://twitter.com/#!/Buckeyecocoa/) For more information: http://buckeyecocoa.org/

Bring your work or your hobby, hang out, and code with us. Follow @buckeyecocoa for more information.

**Latest Dojo Location!** **Knotty Pine Brewing** 1765 W 3rd Ave, Columbus, OH 43212 We're going to try a new dojo location for a few weeks and see how it works Dojos are informal Python group study sessions where everyone interested in Python gathers to learn about Python, help others with Python, or just hang out. Everyone is welcome from Python beginners to experts. Bringing a laptop is encouraged (we'll have extension cords and power strips). If there's something you want to learn leave a comment on this invite so we can plan ahead. We're looking for speakers for our Monthly Meetups! Fill out the form if you are interested in presenting to the Python Community. https://forms.gle/ehSfUAC2WgR34Crq9

It feels like we just saw each other 🤷. Join members of the local design and UX community for our monthly breakfast. For May we’re stopping in for Rooh’s popup breakfast/cafe concept. You know someone is getting the lobster yuzu croissant, and that’s not even the prettiest thing on the menu!.

Our monthly PHP meetup. A virtual shindig courtesy of Zoom. Check back here for the details around 6:15 pm

Want to be a speaker? submit your talk to our Call for Presenters!!! https://sessionize.com/cbus-hug-2026/

Join us as we get together to see your choice of two VERY different movies – one sweet and wholesome – the other a terrifying folklore horror! Option 1 is the fun whodunnit-action-comedy-mystery led by Hugh Jackman, THE SHEEP DETECTIVES! Option 2 is the top-reviewed supernatural-horror-thriller starring Adam Scott, HOKUM! Here’s a description, trailer and plan for this event: THE SHEEP DETECTIVES: Every night a shepherd reads aloud a murder mystery, pretending his sheep can understand. When he is found dead, the sheep realize at once that it was a murder and think they know everything about how to go about solving it. The film is directed by Kyle Balda and take a look at this ensemble cast: Hugh Jackman, Nicholas Braun, Molly Gordon, Hong Chau and Emma Thompson and the voices of Julia Louis-Dreyfus, Bryan Cranston, Chris O'Dowd, Regina Hall, Patrick Stewart, Bella Ramsey, Brett Goldstein and Rhys Darby. TRAILER: https://www.youtube.com/watch?v=pyZI5oM6hWk HOKUM: In this film, a horror writer visits an Irish inn to scatter his parents' ashes, unaware the property is said to be haunted by a witch. It is written/directed by Damian McCarthy stars Adam Scott, Peter Coonan, David Wilmot, Florence Ordesh and Austin Amelio. Hokum premiered to rave reviews at this year’s SXSW Festival and is being release by Neon. It is earning a stellar 97% positive rating on Rotten Tomatoes, which calls it, “A classic haunted house story enriched with atmospheric folklore and perfectly-timed shocks!” TRAILER: https://www.youtube.com/watch?v=EVCIK_MPyhc PLAN: We’ll plan for a 7pm-ish showing of both films and will meet inside the theater lobby about 20 minutes before showtime. If the showtimes work out, we’ll try to get both groups together for a bite before the shows! Complete details and showtime will be confirmed/announced as the date gets closer. Look forward to seeing you there, Dan