C & C++

Dear Flutternauts, What an amazing time for a meetup before we go into our summer break. Use this chance and join us now, because the next meetup is quite a few days away. We also do have a few special surprises like Swag, reduced and even free Conference tickets! And this is just the start, because there are 2 amazing talks lined up again for all of you! **+++++++++++++++ LOCATION & SPONSOR ++++++++++++++++** **Sentry** helps every developer detect, understand, and fix broken code, fast. Using Sentry’s debugging platform–that favors action over dashboards–decreases resolution time from days to minutes, resulting in freed up dev cycles and happier customers. Founded in 2008 by David Cramer and Chris Jennings as an Open Source side project, Sentry is used by over 4 million developers and 200,000 organizations, including Disney, Cloudflare, GitHub, Slack, Instacart, Atlassian, and Riot Games. Learn more at [Sentry](https://sentry.io/welcome/) or follow Sentry on [Bluesky](https://bsky.app/profile/sentry.io), [GitHub](https://github.com/getsentry/), [Twitter](https://x.com/getsentry/), or [LinkedIn](https://www.linkedin.com/company/getsentry/). ***+++++++++++++++ AGENDA +++++++++++++++*** **18:30:** Introduction and welcome **19:00: Own your toolchain** **by *[Mario Chamuty](https://x.com/chamuty)*** You run pub get a hundred times a week and never think about it. But maybe ... Maybe its worth thinking about. Not because it's broken - because it could be a little faster, a little safer, and a lot more yours. A talk about improving the parts of Flutter we stopped questioning. **19:40:** 🍕 **Food, Drinks and Socializing Break** **20:10: Become a Full + Video Stack Dev - Writing UIs is just the start** **by *[Simon Auer](https://x.com/SimonEritsch)*** What if you could use your existing Flutter skills to not only build UIs on screens, but to create visual stories ... and export them as real video files like MP4? From Spotify-Wrapped like summaries, over instructional content that evolves with your codebase, to personalized videos for tens of thousands of users ... all generated programmatically. No video editor app, no ui clicking ... just beautiful code and open source (and maybe vibe coding)! <3 Batteries included: collaboration & versioning in Git, review changes via pull requests, batch-generating variations or integrating video creation directly into pipelines and CI systems **21:00: Meeting fellow Flutternauts**, last bits of food, a drink, friendly or heated discussions (about get, riverpod and bloc ;) ) in a cozy atmosphere. **21:45 - 22:00: Wrapping up**, last drinks We are looking forward to meeting you there! **\*\*WANT TO DO A TALK?\*\*** We are always looking for (short and long) talks! Just fill out this form and we will contact you: [http://talk.fluttervienna.at/](http://talk.fluttervienna.at/) **\*\*JOIN OUR DISCORD SERVER:\*\*** We have a discord server for connection. [https://discord.gg/v9Wvzg794g](https://discord.gg/v9Wvzg794g) **\*\*Flutter Vienna on TWITTER:\*\*** [https://twitter.com/FlutterVienna/](https://twitter.com/FlutterVienna/) Join us to discuss, share, contact and support each other.

Wir laden euch herzlich ein, gemeinsam mit dem einzigartigen ***Patrick Wolf*** eine zweistündige Reise in die Welt von #orclAPEX zu unternehmen. Patrick Wolf ist seit 2009 Mitglied des APEX-Entwicklungsteams bei Oracle und gehört zu den Architekten von Oracle APEX. Er wird seine Vision für APEXLang, KI und die Zukunft der APEX-Entwicklung vorstellen. Unser besonderer Dank geht an **Sphinx IT Consulting GmbH**, die uns freundlicherweise die Räume zur Verfügung gestellt haben und uns bei der Organisation dieser Event unterstützen. Ich freu mich auf einen spannenden Abend!

Every Tuesday, 13:00 – 18:00 Looking for a little extra motivation to tackle your to-do list? Join us for our weekly Body Doubling event at Villa Vida! What is Body Doubling? Body doubling is a productivity technique where simply working alongside others helps you stay focused, accountable, and motivated. Whether you’re studying, working remotely, or just need a space to concentrate, being around others who are also focused can make a difference. What to Expect: A relaxed, supportive environment for getting things done Quiet spaces for deep work and focus Free WiFi throughout the cafe Bring your laptop, notebooks, or anything else you need to stay on track. Drop in anytime from 13:00-18:00 – we’re here every Tuesday to keep you in good company and good spirits while you work. See you there!  *** Jeden Dienstag, 13:00 – 18:00 Brauchst du ein bisschen extra Motivation, um deine To-Do-Liste abzuarbeiten? Dann komm zu unserem wöchentlichen Body-Doubling-Event bei Villa Vida! Was ist Body Doubling? Body Doubling ist eine Produktivitätstechnik, bei der die Anwesenheit anderer dir hilft, fokussiert, motiviert und bei der Sache zu bleiben. Ob beim Lernen, Arbeiten im Homeoffice oder anderen Aufgaben – das Arbeiten neben Gleichgesinnten kann einen echten Unterschied machen. Was dich erwartet: Eine entspannte, unterstützende Atmosphäre zum konzentrierten Arbeiten Ruhige Bereiche für tiefe Konzentration Kostenloses WLAN im gesamten Café Bringe deinen Laptop, deine Notizen oder alles andere mit, was du brauchst, um produktiv zu sein. Komm jederzeit zwischen 13:00 und 18:00 Uhr vorbei – wir sind jeden Dienstag hier, um dir Gesellschaft und positive Energie zu bieten. Bis bald! 

The event is part of our WEEKLY MEETUP SERIES. ---- Hey Badminton Enthusiasts! This meet-up is for all levels: beginners, intermediates and experts. Everyone is welcome to join, test their skills and have some fun together! The organiser will reserve courts in advance - PLEASE ONLY REGISTER IF YOU REALLY PLAN ON COMING (OR CANCEL ASAP IF SOMETHING CAME UP). We are meeting at about 07:50 pm near the reception by the lounge area (next to the courts). Come a bit earlier so you have time to change into workout/sports clothes. The locker rooms are free to use. Also, bring clean indoor sports shoes, your racket and a water bottle with you. There is also a drinking fountain available if you need to replenish your bottle. The organiser will be at the club about 5 min. ahead of time and pay for everyone - please bring if possible exact change and pay the organiser after the event! The fee for this event is 6€. It is possible to rent rackets from the club, if necessary (3€). Sometimes members have spare rackets - please ask in the comment section below! If you are joining our events for the first time, WELCOME! Let the organizer know that you are new and they will find a place for you. Don't worry, we are an open and friendly group. We are sure you will develop connections with the people in our community in no time! Without further ado - see you at our next event! 2G rules apply: geimpft or genesen. We will adapt our events according to the official regulations.

Hey folks, WE ARE BACK AGAIN! This Badminton meet-up is for ALL levels: beginners - advanced - experts. Everyone is welcome to join and test their skills and have some fun together. The organiser will reserve courts in advance - PLEASE ONLY REGISTER IF YOU REALLY PLAN TO COME (OR CANCEL ASAP IF SOMETHING CAME UP) SO WE HAVE CORRECT NUMBERS. Late cancelation (before 24 hours) or no show would be asked to pay. We are meeting at about 6:50 pm near the reception by the lounge. Come a bit earlier so you have time to change into workout/sports clothes. Also, bring clean indoor sports shoes and a water bottle with you. The organiser will be at the club about 10 min. ahead of time and pay for all - please pay the organiser after/before the event!! Cost is 22€ per court, the fee should be around 6€. It is possible to rent rackets from the club, if necessary (3€). Sometimes members have spare rackets - please ask. Enjoy!

**Women in AI Austria - Carinthia Meet up -Afterwork Edition** **Come, connect, learn, and get inspired.** Join us for a relaxed evening of **AI discussions and great conversations** at Uniwirt in Klagenfurt. Whether you are an experienced professional, a newcomer to the field, or simply curious about AI– we are very happy to welcome you! Let’s enjoy a great Afterwork. **When:** **May 23rd** \| Doors open at 6 PM **Where:** Uniwirt, Nautilusweg 11, 9020 Klagenfurt am Wörthersee **What to expect:** * Get to know WAI Austria and members * Versatile discussions about AI, new technologies, and everything you are interested in :) * Great people and delicious food (**SELF PAYMENT** :) ) **We are very excited to meet you but** **please only register if you plan to come.**

Hello badminton fans! Before you dive in, let's lay down some housekeeping rules: **1**🚀 This event is for intermediate and above level players. **2**🤝 First-timers, please reach out to the host before hitting that sign up button. **3**👥 We are playing on two courts with 11 players. **4**🏸 Feather shuttles are on the house. Bring your racket, water bottle, towel etc and maybe a spare racket. **5**🕰️ Arrive early, please! 5-10 mins before kick-off, so that we can start on time. **6**💰 The event costs € 9,50 for 2 hours. Please pay to the host in cash and bring the exact amount with you. If you would like to pay online, please send the host a message. **7**🚨 Cancellation policy: If you're unable to show up, sign-out at least 24h before showtime. In case you cancel less than 24h before the start and we don't find your replacement, you will still have to pay your fees (No Exceptions). ALSO for wait list people, in case you have joined other events, please choose the option 'LEAVE WAITLIST' **8**🚫 No-show? No communication to the host? Welcome to the ban-zone for future events. Let's keep it real – A short message to the host will save the day. **9**🤜🤛 Sportsmanship is our middle name! Be kind, be cool, and let's keep the vibes high. Any antics otherwise? Your name will show up on the 'Black List' 😉 Get ready for some quality games, laughter, and maybe a few accidental shuttlecock dodges and smashes (not intentionally, it happens). See you on the court! 😄🖖🏋️‍♀️ PS: Find more events in our Badminton Meetup Community: www.badmintonmeetup.com

In many organizations, APIs are treated as technical contracts — neat documentation of endpoints and payloads. But what if APIs could become something more: living expressions of the business domain itself? This talk examines how Domain-Driven Design (DDD) and modern API craftsmanship converge to establish a shared language between people and systems. We’ll walk through how techniques like Domain Storytelling, Event Storming, and Context Mapping can lead directly into OpenAPI and AsyncAPI specifications that reflect real domain intent — not just data structures. **How can LLM help?** Along the way, we’ll see how Large Language Models (LLMs) can amplify human creativity — helping teams turn visual domain artifacts into executable API contracts while preserving intent and nuance. Instead of replacing design thinking, AI becomes a collaborator in the craftsmanship process. Through practical examples, we’ll explore how bounded contexts define API boundaries, how ubiquitous language shapes resource and event models, and how contract-first design enables safe, evolutionary change. By the end, you’ll see APIs not merely as integration points, but as living domain boundaries to align architecture, business, and shared understanding. **About the speaker** [Annegret](https://www.linkedin.com/in/dr-annegret-junker-141a99a4/) is Chief Software Architect at codecentric AG in Germany. She has worked in software development for over 30 years. She worked in quite different roles and domains. She is especially interested in DDD, microservices, and everything else. She is working on a large integration project and defines APIs for partners. **The Sponsor** This time, the location, food, and drinks are sponsored by [TechTalk](https://techtalk.at/). Thank you very much, TechTalk, you rock! 🎉 This will be a joined event with the Microservices, Reactive and Distributed Systems Vienna Meetup ([https://www.meetup.com/reactive-vienna/](https://www.meetup.com/reactive-vienna/)) and it is enough to register for only one of the meetups. It is not necessary to register for both! Space is limited, so please register if you want to come. As always, we're very much looking forward to seeing you! Best regards, Daniel and Gottfried

LFU looks deceptively close to LRU: both caches evict the "least useful" item. We'll look at how the ordering rule affects data structure design. We'll discuss the algorithmic tradeoffs behind LFU and compare different implementation strategies, ending with benchmarks in C++ and Rust. Date and time: **25th of June (Thursday), 6 pm** Location: **Beograđanka, Vidikovac, 22nd floor** Address: **Masarikova 5** Online: **[C++ Serbia YouTube](https://www.youtube.com/watch?v=PwmFvXE_K9I)** To join the community discussions, we are on: * [Discord](https://discord.gg/VDUn8YtHw8) * [Telegram](https://t.me/+l7NS0GrslBMwNzI0) * [Website](https://www.cppserbia.org/) See you!

In many organizations, APIs are treated as technical contracts — neat documentation of endpoints and payloads. But what if APIs could become something more: living expressions of the business domain itself? This talk examines how Domain-Driven Design (DDD) and modern API craftsmanship converge to establish a shared language between people and systems. We’ll walk through how techniques like Domain Storytelling, Event Storming, and Context Mapping can lead directly into OpenAPI and AsyncAPI specifications that reflect real domain intent — not just data structures. **How can LLM help?** Along the way, we’ll see how Large Language Models (LLMs) can amplify human creativity — helping teams turn visual domain artifacts into executable API contracts while preserving intent and nuance. Instead of replacing design thinking, AI becomes a collaborator in the craftsmanship process. Through practical examples, we’ll explore how bounded contexts define API boundaries, how ubiquitous language shapes resource and event models, and how contract-first design enables safe, evolutionary change. By the end, you’ll see APIs not merely as integration points, but as living domain boundaries to align architecture, business, and shared understanding. **About the speaker** [Annegret](https://www.linkedin.com/in/dr-annegret-junker-141a99a4/) is Chief Software Architect at codecentric AG in Germany. She has worked in software development for over 30 years. She worked in quite different roles and domains. She is especially interested in DDD, microservices, and everything else. She is working on a large integration project and defines APIs for partners. **The Sponsor** This time, the location, food, and drinks are sponsored by [TechTalk](https://techtalk.at/). Thank you very much, TechTalk, you rock! 🎉 This will be a joined event with the Domain-Driven Design Vienna Meetup ([https://www.meetup.com/ddd-vienna/](https://www.meetup.com/ddd-vienna/)) and it is enough to register for only one of the meetups. It is not necessary to register for both! Space is limited, so please register if you want to come. As always, we're very much looking forward to seeing you! Best regards, Daniel and Gottfried

**Hey everybody!** Do you want to code together, share your projects, or just hang out in a creative atmosphere? Then join us at the **Coding Club @ Jo&Joe Hostel**! We usually start with a short introduction round so everyone can get to know each other. After that, you can: * share your achievements or pet projects (informal, just at the table) * get feedback or inspiration from others * or simply work on your own project alongside the group Bring your laptop (or any device you like to code on) if you want to actively work. Or just come by to connect and get inspired. Please try to be on time so we can kick things off together. Looking forward to seeing you there! 🚀

FlashAttention is one of the most important pieces of software infrastructure for both training and serving any relevant AI model on cutting-edge GPUs. Let's have a look under the hood. The paper comes with a blog post that may be easier to read: [https://tridao.me/blog/2024/flash3/](https://tridao.me/blog/2024/flash3/) Find the paper here: [https://arxiv.org/abs/2407.08608](https://arxiv.org/abs/2407.08608) We are trying out a new Location -- right at the Westbahnhof IKEA. Take the elevator to the fifth. We may relocate if it is too crowded. Please Text me if you are late and can't find us. \-\-\- Bring your own printout or pdf-on-a-gadget. If you didn't have the time to read the whole paper, it is sufficient to be able to pretend to have sort of skimmed it. \-\-\- Want to suggest a paper, an event location, or just stay in touch with regular members? We hang out at the following Matrix server: [https://matrix.to/#/%23pwl-wien:rend.al](https://matrix.to/#/%23pwl-wien:rend.al)

Let's start our regular meetups again! All yarn crafters (knitters, crocheters, yarn spinner, yarn witches, etc.) and masters of other crafts are invited to come and join us. Let's bring our needles, hooks, yarn and work together on our latest projects while catching up and getting to know each other :) please note that the number of participants on Meetup is limited because not everyone is registering on meetup and registering via our whatsapp group. If you would like to join our group, drop me a line :) All levels are welcome! Whether your a needle ninja or a crochet padawan, you will find here a community to welcome you and help you on your crafting journey!

Flemish Pronk Still Life 3,5-day Workshop with Devin Cecil-Wishing (Fri eve, Sat, Sun, Mon). Please go to www.viennaatelier.com --> events --> "Flemish Pronk Still Life" ... for details or send email to info@viennaatelier.com 3,5-tägiger "Das flämische Pronkstilleven" Workshop mit Devin Cecil-Wishing (Freitagabend, Samstag, Sonntag, Montag). Bitte gehen Sie auf https://de.viennaatelier.com --> Events --> ""Das flämische Pronkstilleven" für Details oder senden Sie eine Email an info@viennaatelier.com

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

**Presenter:** Matthew Hess, Microsoft MVP **Time:** Pizza at 6:00, Presentation Starts at 6:30pm Eastern **Location:** Theoris, 9000 Keystone Crossing, Either Downstairs or in Suite 230 if main meeting room isn't available, Indianapolis In 2019 (C# 8.0) Microsoft introduced a feature that has generated a lot of confusion, debate and outright dissent. I'm talking about Nullable Reference Types. In this presentation, I we dig into this feature, explore why it exists, what problem it tries to solve, how it works, and how people have critiqued it, so that you as a programmer can decide if and how you want to use it. Looking forward to seeing you there!

**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

**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

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

**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 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.