Reactive Programming

Anybody who wants to practice their programming skills is welcome. We share our ideas, learn from each other, do some exercise, ask questions, etc. This meetup is the best for those who want to improve their skills by programming and learning in a group If you want to learn more about our Co-Learning, please have a look at our website: [https://opentechschool-zurich.github.io/](https://opentechschool-zurich.github.io/) \*\*\* We have a chat group you can join to get more information: [https://app.element.io/#/room/#ots-zh:matrix.org](https://app.element.io/#/room/#ots-zh:matrix.org) (You need to create a free account if you don't already have one) Remote participants are also welcome. You first need to join the Element chat and then get into the video call that we start at around 19:00 (if we forget, pleas ping us in the Element chat!) \*\*\* Our main languages are Python and Javascript, but we welcome every programming languages. Some of the skills we can help you learning: * Python and * ... PyGame (Zero / Play) -.... Flask * ... Jupyter and data science -... PySide2 / PyQt * ... Shoebot * C++ and * ... Qt * ... cmake * ... and modern C++ * Flutter for Apps * PHP and * ... Vue.js * ... Wordpress * JS and React.js We have a few Github repository that can be interesting to browse:: https://github.com/opentechschool-zurich/

Dies ist ein informelles Treffen für Lernende, die ihre ersten Schritte in der Programmierung machen oder ihre Grundkenntnisse vertiefen möchten. *** This is an informal meetup, for learners that want to do their first steps in programming or want to consolidate their skills. We spend one hour and a half working on tutorials, exercises or projects. If you need help to get started, we will help you finding a good way for learning. You should be prepared to spend your time "doing things": just hanging around and listening might get boring, if all other people are learning on their side. There are experienced people are around and you can ask questions as soon as their arise or bring with you questions you have had during the week. During the last half an hour, we do a (simple) exercise together. We speak German, English, and a few other languages. Currently, how main programming languages are: * Python * Javascript * Java * Flutter * C++ * C * C# * PHP But you're free to learn any programming language during our Co-Learning! If you want to learn more about our Co-Learning, please have a look at our website (no frequent updates...): https://opentechschool-zurich.github.io/ If you're starting with Python, we can suggest: * Learning Python the hard way (https://learnpythonthehardway.org/python3/) (for Python 3). * The Solo Learn Python 3 Tutorial (https://www.sololearn.com/Course/Python/). * A big list of Python tutorials: https://docs.python-guide.org/intro/learning/ For Node.js: * Nodeschool: https://nodeschool.io/ For C++ * https://de.wikibooks.org/wiki/C%2B%2B-Programmierung * https://www.sololearn.com/Course/CPlusPlus/

**Sponsored by:** ***\- ACP*** ***\- TD SYNNEX*** ***\- Technopark Winterthur*** **Partner-led and partner-branded by**: ***Microsoft*** Speakers: * Firas Cheaib (ACP) – When Models Become the Commodity * Victor Chibotaru(LogicStar AI) – Shipping Faster, Drowning Sooner Abstract: When Models Become the Commodity ACP Engineering works extensively with LLMs to write production code across a small team. What makes that work is not the models, but the groundwork laid before them: a portfolio of Python projects sharing the same tooling, structure, tests, CI, and linters, the same conditions that already made the codebase easy for humans to navigate. That foundation is what powers the current build of ACP-M, ACP's industrial IoT platform for manufacturing customers, and an early agentic-loop prototype now running internally. The next step is enabling customers to automate their own operations the same way. Doing that requires the same kind of preparation on their side: turning fragmented operational data into knowledge graphs, unified namespaces, and typed semantic layers, so that agents act on information that is short, focused, and reliable. Once that environment exists, the model becomes a commodity. What matters is enterprise processes and domain knowledge, not which model happens to be in fashion that quarter. Attendees will leave with a concrete way to assess whether their own environment is ready for agents at all, and what it takes to get there -- Shipping Faster, Drowning Sooner AI ships your features faster than ever, but it also ships bugs faster than ever. Code got cheap, maintenance didn't: customer complaints stack up, Sentry alerts overflow, and triaging the pile is still as expensive as it ever was. I'll show how LogicStar finds bugs across your Sentry, Jira and codebase, separates signal from noise, and helps your team fix issues that matter.

✨🎟️ [Ticket required !! CLICK HERE](https://atelier-yuniku.as.me/nerikomi-bowl) 🎟️✨ **MATCHA OR CEREAL NERIKOMI BOWL: Pottery Workshop** Pottery Workshop with Tereza (in English) at atelier yuniku 2 hours / CHF 60.00 Join us for a **calm session** where you’ll create your own **ceramic bowl** using the **nerikomi technique**. Whether you prefer a **matcha** or a bowl for your morning **cereal**, you’ll shape a piece that fits your style. You’ll begin by choosing your clay colors - earthy tones that are layered and combined to form soft, marbled patterns. Using the nerikomi technique, you’ll mix the clay to create natural color flows, then shape your bowl by hand using a pinching technique. To finish, you’ll gently carve and scrape the surface, revealing the patterns hidden within the clay. The result is a one-of-a-kind bowl with a raw, organic look. After the workshop, we’ll glaze and fire your piece for you. **Good to know:** * Course in English * Beginner-friendly – no prior experience needed * Choice of 2–3 clay colors * All materials provided * Small apéro with wine included * Bowl ready for pickup in approx. 4 weeks * One bowl included; extra bowls can be made for a materials fee **Check out more of our courses: [https://www.atelier-yuniku.ch/en/courses](https://www.atelier-yuniku.ch/en/courses)** ℹ️ Please note: * Tickets are non-refundable * Photos and videos may be taken during the event for communication and promotion purposes. Please let the host know if you do not want to be included.

The OWASP community is getting together for another meetup in May 2026! Join us for some security talks 🔐, good company 🤝, and a little aperitif 🍕. **Program:** **16:00** - **Doors open**: Grab a drink, meet old and new friends from the OWASP Switzerland community **16:30** - **Hello from OWASP Switzerland** **16:40 - Talk: AI-Driven Development Lifecycle (AI-DLC) (Markus Rollwagen, Senior Solutions Architect, AWS)** **17:25** **-** **(10min break)** **17:35 - Talk: Using HoneyPots to protect critical Infrastructure (Giulio Grazzi, Head IT Security, SRF)** **18:35** - **(10min break)** **18:45 - Talk: We Tried to Detect Prompt Injection in Coding Agents. Here's What Broke (Paulo Martins, Principal Security Engineer, GitLab)** **19:30 - Networking & Pizza 🍕 & Aperitif**🍷- Grab a bite and chat with old and new friends **Talks Details:** **AI-Driven Development Lifecycle (AI-DLC) (Markus):** Software development is undergoing a fundamental shift. AWS’s AI-Driven Development Lifecycle (AI-DLC) positions AI not as a mere assistant, but as a central collaborator across the entire SDLC — from requirements to deployment. In this session, we’ll explore how AI-DLC’s three phases — Inception, Construction, and Operations — redefine team workflows, and what this means for security: how AI enforces organization-specific security standards consistently, maintains human oversight at critical decision points, and ensures traceability from requirements to deployment. We’ll discuss the security opportunities and risks this methodology introduces, and how teams can adopt AI-DLC while keeping security a first-class citizen in every “bolt.” **Using HoneyPots to protect critical Infrastructure (Giulio):** How do you protect your critical infrastructure in the days of agentic ai and very limited options on your hosts? You need to get creative and use stone age tech. I’ll give you some insights, from our journey and pitfalls you might be facing (and should be avoided :)) **We Tried to Detect Prompt Injection in Coding Agents. Here's What Broke (Paulo):** As a community, we are delegating a significant part of our development workflow to agents, and as the use cases grow, the risk of prompt injection keeps increasing - to the point that it made it to the top of the OWASP LLM Top 10. In this talk, I'll explore the concept of "detect and prevent prompt injection" and why it is particularly hard to do for coding agents. **Speaker Details:** **Markus Rollwagen** Senior Solutions Architect at AWS, based in Switzerland Markus enjoys deep dive technical discussions, while keeping an eye on the big picture and the customer goals. With a software engineering background, he embraces infrastructure as code and is passionate about all things security. **Giulio Grazzi** Head IT Security, SRF From bike messaging to networking to infosec - always maximize never max out. Currently at Schweizer Radio und Fernsehen dealing with all Infosec topics, background in networking, embedded devices and mobile security. **Paulo Martin** Principal Security Engineer, GitLab since 2021 Now focused on AI security: prompt injection, sandboxing, and keeping agentic workflows from doing things they shouldn't.

Web Zurich presents inspiring talks all about the web. Join us for the Mai 2026 meetup! We will have three talks as well as chit-chat and drinks. Whatapp: [https://chat.whatsapp.com/FxOfVTK9nf431xHtVl3eGK](https://chat.whatsapp.com/FxOfVTK9nf431xHtVl3eGK) Website: [https://webzurich.ch](https://webzurich.ch) 18:30 \~ 19:00 Arrival time with drinks, chat 19:00 \~ 19:10 Welcome and introduction 19:10 \~ 19:30 *Alex Suzuki* **Monetizing JavaScript: Building Profitable Products as a Solo Developer** Lessons learned from building and launching a commercial JavaScript library as a solo developer. 19:30 \~ 19:50 *Hugo Sousa* **Ten times tea** I'm building a programming language. When I got to the frontend, I ran into a problem: React's mental model is elegant, but the mental model is at odds with the code. Hooks, effects, and render passes create a runtime that bears little resemblance to the code we write. The Elm programming language works differently and its architecture (TEA = The Elm Architecture) has been adopted by other tools over the years. So I copied it as well. My language embeds TEA at the language level, not as a library. This unlocks time-travel debugging, reproducible application state and serializable bug reports that include the entire program state. This talk covers the quick introduction of my language, TEA, why TEA is the right fit and what becomes possible when the architecture is baked into the language itself. 19:50 \~ 20:10 *Marco Gähler* **Software testing** Many old software projects don't have any tests - if the code works, why should you bother with tests? Well, you really should bother, because code changes all the time. During development, you keep adding new features which at times requires large scale modifications of the code that will inevitably alter existing functionality. And in existing projects, one still has to make updates once in a while, for example for security patches. These things will always break existing functionality and tests are the only remedy against this issue. In this talk, we will look at the basic idea of tests, how to implement them, what issues to look out for and how you can test pretty much any piece of code if your code base is well structured. 20:10 onward More drinks & chat We look forward to see you there! Location https://zurich.impacthub.ch/space/bogen_d/ Viaduktstrasse 93, 8005 Zürich, Switzerland Visit our website https://webzurich.ch/ for more information about the Web Zurich community. This event is supported by Impact Hub Zürich, The global community of entrepreneurial people prototyping the future of business. At Impact Hub, you can connect, collaborate, co-work and create great content in an inspiring environment.

# 🚀 Lean Change Agent Zertifikatstraining: Weg von Masterplänen, hin zu echter Wirkung (Zürich) **Veränderung in Organisationen scheitert oft an starren Plänen und fehlendem Dialog.** In einer komplexen Welt brauchen wir keine dickeren Konzepte, sondern schnellere Experimente und echtes Stakeholder-Engagement. Dieses Training ist kein theoretischer Frontalunterricht. Wir arbeiten zwei Tage lang intensiv an **Praxisfällen**, damit du am Montag darauf sofort wirksam wirst. ### 🛠 Das Problem & Unser Ansatz Klassisches Change Management ist oft zu langsam und ressourcenintensiv. Wir nutzen das Lean Change Denkmodell, um Widerstände in wertvolle Energie zu verwandeln und Veränderungen kleinschrittig, zeitnah und messbar voranzutreiben. ### 🗓 Der Ablauf: 2 Tage interaktive Werkstatt * **Input-Sequenzen:** Kompakte, fundierte Impulse zu agilen Change-Methoden und Emotionaler Intelligenz. * **Experimente:** Du wendest die Theorie direkt auf deinen mitgebrachten Fall an. * **Plenum & Diskussion:** Wir reflektieren die Ergebnisse hochinteraktiv und ziehen handfeste Learnings für deinen Alltag. ### 💎 Dein Paket: Was du erhältst * **Anerkanntes Zertifikat:** Offizielle «Lean Change Agent» Zertifizierung. * **LCM Backpack:** Zugang zum globalen Ressourcen-Hub von Lean Change Management. * **Toolbox:** Alle Trainingsunterlagen und kuratierte Literatur für die nachhaltige Verankerung. * **Full Catering:** Verpflegung über beide Tage hinweg. ### 📊 Fakten, die für sich sprechen * **Erfahrung:** Über 800 erfolgreich begleitete Teilnehmende in mehr als 70 Events seit 2018. * **Spitzenqualität:** Ein NPS von 9.2 bürgt für höchste Relevanz. * **Exklusivität:** Geleitet vom ersten und aktuell einzigen akkreditierten Lean Change Trainer der Schweiz. ### 📍 Die Koordinaten * **Datum:** Donnerstag, 28.05. – Freitag, 29.05.2026 * **Zeit:** Start um 09:00 Uhr - 17:00 Uhr * **Ort:** On-Site, Raum Zürich (genaue Location folgt) * **Sprache:** Deutsch **Bist du bereit, die Organisationsbegleitung neu zu definieren?**

We're planning the next Hackergarten Zurich 🥳 We're looking forward to see some familiar faces and share knowledge within the open-source community. Spread the word — everyone is welcome! Bring your project, a bug, a feature, a question... or just your time and enthusiasm 💜 As always there will be free drinks, beer and pizza, sponsored by Quatico. As usual we briefly present the open-source projects we'd like to work on, break up into groups and try to make an actual contribution. We offer free pizza, beverages and depending on weather conditions a great view on Zurich West from the rooftop terrace. Many thanks to Quatico (https://www.quatico.com) for hosting the event!

Welcome to the Competitive Play Session. This session takes place every Saturday from 10:45 to 12:15 at the Yonex Badminton Hall Hardbrücke. The number of players on the waitlist one week in advance determines the number of courts booked. If you are on the waitlist but can no longer attend, please remove yourself as early as possible. Players are accepted into the session based on skill suitability. This session is for experienced players looking for quality games. Play is focused on doubles with a competitive mindset and consistent rallies. You should be comfortable smashing, return smashes and keeping up a moderate tempo throughout the session. New players and those who are new to badminton are welcome to join the PM Session (Open Level Play). Payment can be made via TWINT after the session.

**Pizza, Pasta & UX: Join us for the Post-Meetup Dinner!** 🍕 Want to keep the conversation going after the UX meetup? Join us for dinner right after! We have reserved a table at our favorite local Italian restaurant. They have welcomed us many times with delicious food and a cozy atmosphere. It’s the perfect place to unwind and discuss the evening's topics over some tasty pizza or pasta. **Important:** Please register here to save your seat. This reservation is exclusive to attendees of the main meetup of the same day. See you there! The LTT Team

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.

**Important time note:** Please plan on arriving between 5:30 and 6:00 as the elevators lock after 6 and you'll need to message us and we'll need to come get you. The building address is 4450 Bridge Park The entrance is 6620 Mooney St, Suite 400 You will need to scan your ID at the door to get a visitor badge. **Abstract** Like it or not, AI agents are now capable of turning a quickly written paragraph of requirements into a pull request that is ready to be integrated into real-world production applications and it's now our responsibility to make sure AI doesn't go rogue and take down prod - or corrupt our data by misunderstanding the requirements or our existing schemas. In this session we'll explore strategies to protect our codebases through unit and integration testing, documentation, and code review along with additional ways of providing context and guard rails to our AI agents as they carry out the work we've assigned them to do. By the time we're done, you'll have a firm grasp of the problem and understand some helpful options for protecting your codebase from vibe coding mishaps getting YOLOed into prod. **YouTube Link** TBD

It’s time to take control of your mental health. How do you get rid of stress, anxiety and uncertainty? These emotions are buried deep in your reactive mind. Find out what the reactive mind is, and in the process find yourself. Here is the secret of being positive and free: Thinking positively is not enough. You also have to get rid of the negative thinking. Your mind is like a garden. You can plant many beautiful flowers in it, but if you don't get rid of the weeds when you plant your flowers, the weeds will soon take over the whole garden. A positive thought is like a flower in your mental garden, and a negative thought is like a weed. You cannot expect to have a positive mindset if you continue to have negative thoughts dwelling and growing there. So, how do you get rid of the negative thoughts? That's what this Meetup is all about. Attend this local meeting and find out! The Meetup event will be led by a consultant who had helped many people live happier in life. Be sure to click on the red "Attend" button below to come to this local event. We look forward to seeing you there. This group is created by the Dianetics & Scientology life improvement center.

**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

Most people use AI like a search box: they type one sentence, hope for the best, and get frustrated when the answer is generic, wrong, or useless. But getting better results from tools like ChatGPT, Claude, Gemini, and other AI systems is not about memorizing magic prompts. It is about learning how to give the AI better context. In this beginner-friendly session, we’ll break down how to make AI dramatically more useful by improving the way you communicate with it. You’ll learn how to give clearer instructions, provide examples, set constraints, ask for better output formats, and use follow-up questions to turn a mediocre answer into a genuinely useful one. We’ll cover practical techniques you can use immediately for work, learning, writing, coding, planning, research, and everyday problem solving. We’ll also touch on why these same ideas show up in more advanced AI systems, including RAG, agents, evaluations, and AI workflows. No technical background required. Bring your curiosity, your questions, and maybe one real task you wish AI was better at helping you with. **What you’ll learn:** * Why “better prompting” is really about better context * How to structure requests so AI gives more useful answers * How to use examples, constraints, and output formats * How to iterate when the first answer is not good enough * How these skills connect to more advanced AI workflows This meetup is for anyone who wants to move beyond basic ChatGPT usage and start getting more practical value out of AI. LOGISTICS AND PARKING: The talk starts at 7:00 PM. The first half hour is reserved for everyone to get set up and mingle. Free pizza and drinks! The cheapest parking option is to find street parking, which will only cost you a few bucks. Otherwise, park in the nearby veteran's museum lot for $8. It's highly recommended you avoid the nearby $15 garage parking.

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