Reactive Programming

We’re thrilled to announce the next edition of the BcnRust Meetup, this time hosted by **[Protofy](https://protofy.xyz/)**! Join us for an evening exploring two very different but equally ambitious Rust projects: an AI-native virtual machine that rethinks how code is executed, and a distributed task queue built as a hands-on journey into async Rust, concurrency, and fault-tolerant systems. Whether you're interested in language runtimes, AI agents, distributed systems, or simply seeing how Rust enables bold ideas, this meetup is for you. **Driver: An Agentic VM in Rust** by [Cristian Sánchez](https://www.linkedin.com/in/cr3at0r/) Most virtual machines are deterministic by design. LLMs break that. But what if AI wasn't an external API on top, but a native execution primitive inside the VM itself? Driver is a Rust VM where AI is a first-class execution primitive. The stdlib is aware of whether it's being invoked by deterministic bytecode or by an LLM-generated action and behaves accordingly. We'll cover the practical decisions behind the core VM, and the toolkit around it. **Aether: Learning Async Rust by building a Distributed Task Queue** by [Arnau Berenguer](https://www.linkedin.com/in/arnau-berenguer-jimenez/) Building a distributed system is a great way to learn async Rust because you run into all the hard parts for real. In this talk I'll walk through Aether, a personal project of a task queue that lets you submit and run Python scripts on a cluster from a CLI. We'll cover the system architecture, how to handle multiple concurrent tasks sharing state, how to handle loss of connection, and propagating cancellation signals on concurrent tasks over the network. Along the way we'll see the honest lessons learned and what makes async Rust hard but fun. **Why Attend?** * Explore advanced Rust applications, from AI-native runtimes to distributed infrastructure. * Learn practical lessons about virtual machine design, async programming, concurrency, and fault tolerance. * Discover how experienced Rust developers approach complex systems and architectural trade-offs. * Connect with Barcelona's Rust community and exchange ideas with fellow engineers, makers, and enthusiasts. * Get inspired by real-world projects that push Rust beyond the usual web services and CLI tools. Whether you're a Rust beginner curious about what's possible, or a seasoned developer looking to dive deeper into systems programming, you'll leave with new ideas, technical insights, and plenty to discuss. Let’s build, learn, and geek out over Rust together! 🦀 **Streaming**: We will stream it via YouTube so you can also subscribe to our [YouTube channel](https://www.youtube.com/@bcnrust) to get notified when we go live.

Ever want to try ceramics or build on your skills? Then this would be the perfect opportunity. The main technique used during the session is hand-building giving you the option to make so many different things for yourself, friends or family - bowls, plates, sushi dishes, plants pots and much more. Beginners will be guided through the process of making things using techniques such as slab building, coiling, pinching, texturing, under-glazing and glazing. The more advanced will be free to create and those with experience throwing would be welcome to use my wheel (to be reserved in advance). Those of you who would like to learn about glazing would need to book 2 workshops. The workshops are run in English but I do speak Catalan and Spanish. They also provide a great opportunity for non-native speakers to chat and learn. They last 2.5 hours and basic materials are provided. Your pieces will be fired and ready for pick up around 10 days after. Cost: 37.50€/person. Bizum: 35€ (647911448) Block of 4 workshops 135€

This is the third in a series of meetups exploring the exciting world of **[OpenTelemetry](https://opentelemetry.io/)** within the cloud-native ecosystem. And this time, we are partnering with our good friends at [Write the Docs Barcelona](https://www.meetup.com/write-the-docs-barcelona/). Whether you're just curious about observability or already a seasoned OpenTelemetry user, this series will offer valuable insights, practical knowledge, and opportunities to connect with fellow enthusiasts in the Barcelona cloud-native community. **📍 Location:** **[Factorial](https://factorial.es)** \- Carrer de Llacuna 56\, building C\, Barcelona \| [https://maps.app.goo.gl/baTqk9H8m3ACK4jD7](https://maps.app.goo.gl/baTqk9H8m3ACK4jD7) **👉 Here's a sneak peek of the agenda:** **18:30:** Check-in and welcome 👋 **18:45:** 🎙️ **"Collaborating in OSS projects: The OpenTelemetry Docs case study"** by **[Anna Urbiztondo](https://www.linkedin.com/in/annaurbiztondo/)** - *Senior Technical Writer at [Grafana Labs](https://grafana.com)*, **[Fabrizio Ferri-Benedetti](https://www.linkedin.com/in/fabrizioferri/)**[ ](https://www.linkedin.com/in/fabrizioferri/)- *Principal Technical Writer* *at [Elastic](https://elastic.co)***.** This Write the Docs meets Cloud Native talk covers what makes open-source projects succeed in practice — clear focus, community ownership, organization, goodwill, and excellent communication in a fast-moving codebase. OpenTelemetry Documentation is a perfect example because it encompasses new, state-of-the-art concepts and spans across multiple languages and vendors. Therefore, its docs must explain workflows, implementation scenarios, deployment tools, and APIs to both newcomers and seasoned users to guarantee adoption and success. **19:45 - 20:30:** Networking, Snacks, and Drinks 🍻🍕 We appreciate **[Factorial](https://factorial.es)**'s generosity in hosting us at their Barcelona office and to **[Grafana Labs](https://grafana.com)** for providing snacks & refreshments. Thank you so much 🙌 See you there! 👋

**A fast-paced, unscripted night of fun and funny comedy.** Expect wild characters, hilarious scenes, and unexpected moments created on the spot by performers who are quick, sharp, and endlessly inventive. **[RESERVE YOUR TICKET NOW](www.tabimprov.com)** *"I came for the improv show ‘Typical Adult Behavior’ and was blown away by the performers! It’s amazing how creative and quick they are with audience suggestions."* We have over 1,000 5-star reviews — come find out why for yourself!"

Write the Docs Barcelona is partnering with [Cloud Native Barcelona](https://www.meetup.com/cloud-native-bcn/) to bring you an in-person meetup. Join us at the offices of [Factorial](https://factorial.es/) to learn how to collaborate with Open Source as Tech Writers. **📍 Location:** **[Factorial](https://factorial.es)** \- Carrer de Llacuna 56\, building C\, Barcelona \| [https://maps.app.goo.gl/baTqk9H8m3ACK4jD7](https://maps.app.goo.gl/baTqk9H8m3ACK4jD7) **👉 Here's a sneak peek of the agenda:** **18:30:** Check-in and welcome 👋 **18:45:** 🎙️ **"Collaborating in OSS projects: The OpenTelemetry Docs case study"** by **[Anna Urbiztondo](https://www.linkedin.com/in/annaurbiztondo/)** - *Senior Technical Writer at [Grafana Labs](https://grafana.com)*, **[Fabrizio Ferri-Benedetti](https://www.linkedin.com/in/fabrizioferri/)**[ ](https://www.linkedin.com/in/fabrizioferri/)- *Principal Technical Writer* *at [Elastic](https://elastic.co)***.** This Write the Docs meets Cloud Native talk covers what makes open-source projects succeed in practice — clear focus, community ownership, organization, goodwill, and excellent communication in a fast-moving codebase. OpenTelemetry Documentation is a perfect example because it encompasses new, state-of-the-art concepts and spans across multiple languages and vendors. Therefore, its docs must explain workflows, implementation scenarios, deployment tools, and APIs to both newcomers and seasoned users to guarantee adoption and success. **19:45 - 20:30:** Networking, Snacks, and Drinks 🍻🍕 We appreciate **[Factorial](https://factorial.es)**'s generosity in hosting us at their Barcelona office and to **[Grafana Labs](https://grafana.com)**[ ](https://grafana.com)for providing snacks & refreshments. Thank you so much 🙌 See you there! 👋

Movement Flow: Hemos pasado una década creando un sistema educativo inclusivo que promueve el autodescubrimiento y el crecimiento, dando la bienvenida a todos sin importar la edad o las habilidades. Nuestro sistema no se trata solo de acción física, sino de un viaje transformador, probado por miles de practicantes. Nuestra comunidad de apoyo fomenta el desarrollo en todos los niveles de habilidad. Aquí mejorarás tu propiocepción, dominarás una conexión fluida con el suelo, aprenderás secuencias de movimiento desde las más simples hasta las más complejas, ¡y quizás incluso hagas el pino! Entonces, ¿por qué esperar? Enciende tu camino hacia la fuerza, la flexibilidad y el movimiento ahora. Exploremos juntos este hermoso mundo del movimiento.

🚀 **LeadDev Barcelona Meetup #6 – Empowering Engineering Leadership** We’re back for another edition of **LeadDev Barcelona Meetup**, tailored specifically for **tech leads, engineering managers**, and **engineering leaders** looking to sharpen their leadership skills and connect with like-minded professionals in the industry. This event is all about **leading teams, driving engineering excellence**, and exploring strategies that can help you **scale your leadership impact**. With inspiring talks from top professionals and ample networking opportunities, this is the perfect environment for learning, sharing insights, and forging connections with peers. **What can you expect?** * **Actionable leadership insights** on scaling engineering teams and improving productivity * **Networking with fellow tech leads, engineering managers**, and senior engineers * **Delicious refreshments and snacks**, courtesy of our sponsor, Manychat 📅 **Date:** 18th of June 2026 ⏰ **Time:** 18:00 - 21:00 📍 **Location:** [Manychat's Barcelona Office (Carrer de Pau Claris, 194, Eixample, 08037)](https://maps.app.goo.gl/7GaVtstraiSM5fHo7) **Agenda:** 18:00 – Arrival, networking, and refreshments 18:20 – Welcome from the hosts 18:30 – Welcome from the sponsor 18:35 – **The EM as Context Architect** \- Vlad Shuteev\, Engineering Manager at Manychat Engineering managers don't lose relevance because AI gets smarter — they lose it because context transfer becomes cheaper. In this talk, I share how I built a personal AI system that sees the same inputs I do: Slack channels, meeting transcripts, Notion docs, people profiles. The system learns my patterns over time and surfaces insights before action — not after. Through six concrete principles and real examples, I show what it means to architect context instead of carrying it in your head. And what stays irreversibly human: presence in 1:1s, lead-by-example moments, empathy in hard conversations. 19:00 - **Don't Delegate Understanding,** Pau Ramon, CEO at Ramensoft. Is this an AI talk or a Leadership talk? There's only one way to know. 19:25 – Closing remarks 19:30 – Networking with Food & Drinks 21:00 – Close Spaces are limited – **RSVP to secure your spot** and join a community of engineering leaders who are shaping the future of tech! Whether you're an established engineering manager or stepping into a leadership role, **LeadDev Barcelona Meetup** will give you the tools, insights, and connections to level up your career and make a lasting impact on your teams. If you need further information or have any questions, don’t hesitate to reach out to us at: hello@leaddev.com. Here is a friendly reminder of our [Code of Conduct](https://click.pstmrk.it/3s/leaddev.com%2Fcode-conduct/d6eN/Oee1AQ/AQ/a9b371b4-7191-44ca-9609-20d7a87b5535/3/U3Fu0fY6qI) to help protect the safety of our community. We can’t wait to see you there! And don't forget to share this with your colleagues who may be interested, and keep an eye out for upcoming meetups in the following months. Thank you to our Barcelona Meetup partner Manychat!

Are you looking to try out ceramics or up-skill your existing knowledge? Look no further! This workshop is standalone or you can book a block of 4 that need not be consecutive. It takes place in a very spacious and bright studio and you are welcomed to come with your own ideas or simply follow along and let your creativity blossom during the mindful 3 hours of making. The main technique used during the session is hand-building giving you the option to create functional ware or small sculptural work. Beginners will be guided through the process using techniques such as slab building, coiling, pinching, texturing and surface decoration. The more advanced will be free to create and those with experience throwing would be welcomed to use the wheel which would need to be reserved in advance. Those of you who would like to learn about glazing would need to book 2 workshops. The workshops are mainly run in English but I do speak Catalan and Spanish. They also provide a great opportunity for non-native speakers to practice their English. They last 3 hours, materials and aprons are provided and your pieces will be fired and ready for pick up around 10 days after. Cost: 42€/person PayPal/40€ Bizum. Block of 4 workshops 150€

Nuestra nueva web: [https://www.patreon.com/singlesbarcelona](https://www.patreon.com/singlesbarcelona) FIESTA GRATIS DE SOLTEROS Y SOLTERAS FREE PARTY SINGLES ONLY 🤩❤️🍹FREE LANGUAGE EXCHANGE IMPROVE PRACTICE cat, esp, eng, ita DANCE & DRINKS 🤩❤️🍹INTERCAMBIO DE IDIOMAS GRATIS MEJORA PRACTICA cat, esp, eng, ita BAILE & BEBIDAS MAKE NEW FRIENDS/ HAZ NUEVOS AMIGOS/AS VEN SOLO/A O CON AMIG@S Y PÁSALO PIPA HACIENDO NUEVAS AMISTADES TOMANDO UNA CERVEZA, BAILANDO Y PRACTICANDO IDIOMAS DE UNA FORMA NATURAL ESTE SUBGRUPO SE ORGANIZA A TRAVÉS DEL CHAT PRO "GEN Y" DENTRO DE LA PLATAFORMA PATREON SINGLES BARCELONA. COLABORA, PARTICIPA Y EMPUJA. CREA ACTIVIDAD SOCIAL. COGE LA PALA. [https://www.patreon.com/singlesbarcelona](https://www.patreon.com/singlesbarcelona)

Are you looking to try out ceramics or up-skill your existing knowledge? Look no further! This workshop is standalone or you can book a block of 4 that need not be consecutive. It takes place in a very spacious and bright studio and you are welcomed to come with your own ideas or simply follow along and let your creativity blossom during the mindful 3 hours of making. The main technique used during the session is hand-building giving you the option to create functional ware or small sculptural work. Beginners will be guided through the process using techniques such as slab building, coiling, pinching, texturing and surface decoration. The more advanced will be free to create and those with experience throwing would be welcomed to use the wheel which would need to be reserved in advance. Those of you who would like to learn about glazing would need to book 2 workshops. The workshops are mainly run in English but I do speak Catalan and Spanish. They also provide a great opportunity for non-native speakers to practice their English. They last 3 hours, materials and aprons are provided and your pieces will be fired and ready for pick up around 10 days after. Cost: 42.00€ PayPal/person or 40€ Bizum. (647911448) Block of 4 workshops 150€

**[BOOK YOUR TICKETS HERE](https://www.barcelonaimprovgroup.com/shows)** Welcome to the community event with the freshest improv talent. In the first half, Kaleido Improv: every choice has consequences. Some are just more fun to watch! Kaleido Improv brings to you Coin Flip, an improvised longform storytelling experience where a single question splits the story in two. With the flip of a coin, the narrative leaps into parallel realities, unfolding unscripted and unplanned, as each choice sends the story spinning into the unknown. No script, no safety net, just bold decisions, alternate paths, and the thrill of discovering what could have been. In the second half, join Susan and Dorothy as they walk around the room, using the audience's suggestions as lines in their dialogue. You'll be taken on a freeform journey where you'll meet many different characters, places, and adventures. Is this character half-troll and half-fairy? Or are they just an abstract representation of joy? Susan and Dorothy will find the answers through the magical power of improv. **4:30pm** Doors & Bar Open **5:00pm** Show Starts **Tickets:** Early Bird 8€ *(book by Thursday)* General 10€

Nuestra nueva web: [https://www.patreon.com/singlesbarcelona](https://www.patreon.com/singlesbarcelona) **RANGO DE ESTE EVENTO 45-54 AÑOS APRÓX.** **RANGO DE ESTE EVENTO 45-54 AÑOS APRÓX.** **🤩❤️🍹MINI GUATEQUE RETRO DE 1 HORA PARA SOCIALIZAR UN POCO ANTES DE IRNOS AL TARDEO DISCO REMEMBER PORQUE LUEGO EN LA DISCO NO SE PUEDE HABLAR MUCHO CON LA MÚSICA A TODA CASTAÑA Y DANDO SALTOS.** **Precio:** **Inscripción gratis para las chicas.** Chicos consultar. Inscripción y ubicación por **whatsapp 630 467 646** una vez estés apuntado aquí en meetup. **Primero apúntate en meetup luego envía whatsapp. No envíes whatsapp si no apareces en la lista de apuntados del evento meetup.** Gracias. Se habilitará **grupo whatsapp temporal** para el evento.

**Scientific Paper Reading Club: What**: PRAGMA: Revolut Foundation Model https://arxiv.org/abs/2604.08649 **Summary**: We'll discuss a paper about a new kind of foundation model for banking. Instead of building separate models for fraud detection, credit scoring, customer engagement, and dozens of other tasks, the authors train a single model that learns a general representation of a person's financial behavior and reuse it everywhere. **Meeting Details:** 🗣 **Presenter:** Maksim Ostroukhov 💬 **Language of the meeting:** English 🎟 **Entrance donation:** 10 eur 📍 **Location:** Maui coworking (Note: For some reason, Meetup maps sometimes wrongly point to other addresses. Here is the exact address: [https://maps.app.goo.gl/fjx9t4zG8GnEmXLr9?g_st=ac](https://www.google.com/url?sa=E&q=https%3A%2F%2Fmaps.app.goo.gl%2Ffjx9t4zG8GnEmXLr9%3Fg_st%3Dac) ) Looking forward to a great discussion this Saturday!

Hi and welcome to our next Socrates Café philosophy meetup! Do you have a hunger for deeper understanding of yourself and the world? Do you value deep, honest and respectful dialogue? If yes, then this meetup will be very interesting for you. • WHAT IS A MEETUP ABOUT? At every meetup we have a discussion using Socratic method: https://en.wikipedia.org/wiki/Socratic_method We ask, answer and discuss questions and ideas to stimulate critical thinking and to widen our perspectives with new concepts and thoughts. The main purpose of these meetups is to enrich ourselves with the perspectives of others, not to convince others about our own perspectives. Our meetups are about our own philosophies of life and not necessarily what the great philosophers and academics have said or written. It is not a debating club or a platform for proselytizing. Instead, we place the emphasis on questioning, open mindedness and challenging our own assumptions while listening to and respecting the views shared by others. A Socrates Café meetup is considered a success when participants leave a discussion with many more questions than they had at the beginning. • WHAT TOPIC IS DISCUSSED AT THE MEETUP? Participants suggest topics at the beginning of each meeting. We then vote and choose that event's most popular topic for discussion. No academic training in philosophy necessary; just enthusiasm for exchanging ideas and points of view. Some examples of subjects chosen on previous meetups: * What ideals are worth dying for? * Why are we never satisfied? * Why is it that human beings know that the society is going wrong, leaders are well informed about it and things continue as is? * Is identity necessary? * How can it be that people in democratic societies are so obsessed with power? (Desire to be different, better, stronger than others) * What is friendship? • WHO PARTICIPATES AT THIS MEETUP? Anybody is more than welcome to join our meetups. Our events gather people from different backgrounds, different cultures, while no philosophical background is mandatory. Our usual participants are people that have a hunger for deeper understanding of themselves and the world. People that value deep, honest and respectful dialogue. The inspiration for Socrates Cafe originates with the book of the same name, written by the philosopher Christopher Phillips. (Socrates Cafe: A Fresh Taste of Philosophy, 2002). Phillips felt that the Socratic method of dialogue and discussion should be practiced not just in academic settings, but among everyday people interested in examining deep questions together. Hundreds of Socrates Cafe groups now exist around the world. To learn more, visit [https://socratescafe.com](https://emea01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fsocratescafe.com%2F&data=05%7C02%7C%7C1b245fc060a24a1b22c508dd324f736a%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C638722038989360624%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=pLtcEu25qgDHP1XvhFs5Cx4L1rRDYmqwnNWgxalKovY%3D&reserved=0 "Protegido por Outlook: https://socratescafe.com/. Haga clic o pulse para seguir el vínculo.").

We've moved to guild.host Look for us there. https://guild.host/events/buckeye-cocoaheads-nscoders-tcbrk5

**Improving Office in Franklinton** Physical location: Improving Office 330 Rush Alley Suite #150 Columbus, OH 43215 Schedule: 6:00 p.m.: Socialize, eat, and drink. Improving will be providing pizza and beverages. 6:30 to 8:00 pm. Main meeting and presentation(s). Topic: This month Chris Pazsint will be talking about Agentic Coding. How does one use CLI Based Agents, and Agentic IDEs such as Cursor, Kiro, Antigravity? How to include agentic coding plugins for IDEs you already love such as Visual Studio Code. We meet on the last Monday of each Month. Presentations are given by members and friends of this group. If you would like to do a presentation (small or large) on a python topic, please contact Central OH Python at centralohpython@gmail.com

**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** *Customize the IDE: Building Extensions for Visual Studio Code* Visual Studio Code is one of the most widely used development environments today, and much of its flexibility comes from its extension ecosystem. Extensions allow developers to customize the editor with new features, integrations, and workflow improvements tailored to their needs. In this session, we’ll cover what extensions are and the different types available, including full extensions written in TypeScript or JavaScript, along with lighter-weight extensions such as color themes, language packs, language support, code snippets, and keymaps. We’ll also look at practical reasons a developer might create an extension, from automating repetitive tasks to adding custom tooling. The session includes a hands-on walkthrough of creating a new extension, testing it locally, and understanding the basic project structure. We’ll close with a brief overview of how extensions are packaged and published to the Visual Studio Marketplace and other distribution options. **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.

We are bringing Microsoft Build sessions to Columbus Ohio! The Central Ohio Azure Meetup and Central Ohio .NET Developer's Group (CONDG) are coming together to bring some of the labs and breakouts from Microsoft Build to your backyard. In this free, 1 day event, you are going to Build stuff with us! And yes, there will be free food. Please RSVP via [Microsoft Build //localhost:columbus | Microsoft Reactor](https://developer.microsoft.com/en-us/reactor/events/27247/).

We connect you with up to 30 Men or Women tennis partners close to your PLAYING REGION and skill level. This program is less competitive, no champions crowned, no league standings just dedicated tennis partners who want to meet up with you on the courts. Players will meet up to play a tennis match or just to hit around. Just go through the [Join Page](https://www.tenniscolumbus.com/partner-program) to enter this program. [https://www.tenniscolumbus.com/partner-program](https://www.tenniscolumbus.com/partner-program)

Most people still use AI like a search box: type one question, get one answer, repeat. But the next step is AI agents: systems that can take a goal, break it into steps, use tools, remember context, and produce useful work for a human to review. In this beginner-friendly session, we’ll demystify what AI agents actually are — without hype or jargon. We’ll walk through practical examples of how agents can help with research, planning, writing, coding, operations, and personal productivity. We’ll cover: * What makes an AI “agent” instead of just a chatbot * How agents break tasks into steps * Where agents are genuinely useful today * Where they fail, hallucinate, or need human review * How to design simple AI workflows for your own work * A live demo of an AI agent-style workflow from start to finish No coding experience required. This is for anyone who wants to understand where AI tools are going and how to use them more effectively right now. 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.