CSS3

Andere drücken die Schulbank, wir aber wollen in gemütlicher (und realer) Atmosphäre wieder aufeinandertreffen und einen Deutsch-Spanisch-Tandemkurs aufleben lassen. Beim einfachen Zusammenkommen und kennenlernen lässt es sich schließlich viel effektiver lernen. und Spaß haben. ...

After hopping across various Berlin venues, we’re thrilled to return to Saftladen for the second edition of *Level Up Your Folds*! Big shoutout to this non-profit (and a very *professional* one, mind you 🍊) indie game developer collective for hosting us again – couldn’t ask for a better creative playground! 👾 Food or snacks for sharing during the origami session are very welcome, so bring them on! Here's an overview of what you could expect: * **Special format of 2x presentation** by our beloved origami masters, followed by **guided collective folding of a model** of their choice! * **Mandatory donation** (amount of your choice) – this supports essential costs like the Meetup subscription and keeps our community thriving 🌱 You can either submit a **physical donation** to the event host in person or make a **digital donation** **[here](https://paypal.me/origamiberlin?locale.x=de_DE&country.x=DE)** (and inform the host afterwards). * In-person folding practice for all levels – beginners and experienced folders are equally welcome. * Origami paper + model instructions will be provided (from the host’s collection, for reference only). Feel free to bring your own favorite sheets or tools! * Photos may be taken for memories & our archive (Meetup, Instagram, Telegram) – let the host know if you prefer not to appear. * **We kindly encourage everyone to buy at least one drink (€2 each) to support [Saftladen](https://saftladen.berlin/) for hosting us!** ⚠️ **RSVP Policy – Please Read** ⚠️ Our community has grown a lot since its birth in August 2024, which is amazing — but it also means we need to handle RSVPs more carefully: * RSVP opens **7 days before** each event (apart from short-notice events) and closes at **noon on the event day**. * Please cancel your spot or contact the host directly (via Meetup message function or our [Telegram channel](https://t.me/+T4URs80l2ig3NWNi)) by **noon on the event day** if you can't make it last minute. * Members with **2 no-shows** (without notice) will be removed from the group unless a valid reason is provided. Thank you for helping us keep our community respectful, reliable, and fun! 🙏 Get in touch if you have questions anytime and see you all at the folding tables very soon! 👾🍊

-DROP IN - *(English below)* **Lindy Hop \| Swing Dance** Klassen (fast jeden Montag) 19:00 Uhr Starter 20:15 Uhr Improver / Refresher Für mehr Informationen & Kosten, bitte hier schauen: [SWING PATROL KOLLE 37](https://www.swingpatrolberlin.com/sp-kolle37.html) \-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\- Classes (almost) every Monday 19:00 Uhr Starter 20:15 Uhr Improver / Refresher For more information & cost, please look here: [SWING PATROL KOLLE 37](https://www.swingpatrolberlin.com/sp-kolle37.html)

Bachata (the dance of our generation) is a social couple dance like Salsa - no choreography. The community in Berlin is active daily - you will meet a lot of open-minded people and make new friends quickly! Every Monday we have Bachata dance classes in Berlin - we are usually a group of around 20 people (95% beginners): 🕖 19:00 class: Beginners-+ Bachata Technique (0-1+ years experience) • No partner needed - we switch (for couples: partner rotation is optional). • You can start from zero in any of these classes! 📍 Adress: Jakob-Mierscheid-Steg ([Google Maps Link](https://maps.app.goo.gl/pjXopSSqAt55FQGW9)) - near S+U Hauptbahnhof We are down by the river. • Price: 12€ per class (10er-card = 100€). ✅ Dance teacher contact: [WhatsApp-group](https://chat.whatsapp.com/IWKPsid0cBDAUHCWKZNL2B) / [Instagram](https://instagram.com/mahir.bachata.berlin) 🇩🇪: Bachata (der Tanz unserer Generation) ist ein sozialer Paartanz wie Salsa - keine Choreographie. Die Bachata-Szene in Berlin ist groß und täglich aktiv - du wirst schnell viele offene Leute kennenlernen und neue Freundschaften schließen! Jeden Montag findet dieser Bachata Tanzkurs statt - wir sind meistens eine Gruppe von 20+ Leuten (95% Anfänger): 🕖 19 Uhr Kurs: Anfänger-+ Bachata Technik (0-1+ Jahre Erfahrung) • Kein Partner nötig - wir wechseln (für Paare ist der Partner-Wechsel optional). • Du kannst in diesen Kursen jederzeit von null starten! 📍 Adresse: Jakob-Mierscheid-Steg ([Google Maps Link](https://maps.app.goo.gl/pjXopSSqAt55FQGW9)) - Nähe S+U Hauptbahnhof Wir sind unten am Wasser. • Preis: 12€ je Kurs (10er-Karte = 100€). ✅ Tanzlehrer Kontakt: [WhatsApp-Gruppe](https://chat.whatsapp.com/IWKPsid0cBDAUHCWKZNL2B) / [Instagram](https://instagram.com/mahir.bachata.berlin) Schreib uns gerne eine Nachricht, wenn du offene Fragen hast! Wir freuen uns auf dich ❤ Bachata Classes Berlin

Tolle Berlinerinnen und Berliner, als ich schreibe, sitze ich im Wald zwischen Buchen und Eichen auf meinem Campingstuhl und genieße die Ruhe des Sonnenlichts. Suchst du nach Freiheit von dem Lärm der Szene, Lärm der Stadt? Möchtest du Brücken mit interkulturellen, diversen Leuten aufbauen? Dieses Jahr möchte ich unbedingt neue Leute, die Tiefe und Empathie haben kennenlernen. Diesen Leuten meine Zeit geben, und gegenseitige Freundschaften hoffentlich aufbauen. Selbst glaube ich, dass Mädels und Jungs einander nicht verstehen können, wenn der Sinn von einer Person 100% einer Geschlecht ist und die Person keines der Geschlecht gegenüber kennt. Idealerweise sollte der Sinn 50/50 weiblich/männlich sein, dass wir uns gegenseitig ideal verstehen können. Selbst bin ich Künstler, der sich für Farbphysik (Colour Phenomena) interessiert. Zum Beispiel ein roses Kirschbaum in der blauen morgen Stunde. Oder blaue Bäume im Licht eines bedeckten Sommer Tag, auch wenn jeder glaubt, dass man sachlich weiß, ‚Bäumen sind grün!‘ Colour sind, glaube ich, hauptsächlich weibliche Phänomene. Und als Künstler empfand ich seit langem eine Affinität für Colour. Das Bild oben ist ein Kunstwerk von mir. Ich möchte die ruhigen Leuten erreichen, also der Treff ist entweder Online, per Signal Messenger (Link zur Gruppe im Kommentar; nur für Teilnehmer der Veranstaltung sichtbar) um neue Verbindungen leicht zu machen, oder auch sogar besser persönlich, wenn du dich spontan unterwegs sein will und persönlich treffen will. Wenn du mich persönlich triffst setzen wir uns auf eine Wiese, eventuell in der Wuhlheide, oder auf dem Tempelhofer Feld. Schick mir eine Nachricht vorher per Signal Gruppe und wir können uns vereinbaren. Dieses merken: Bitte rauchen Sie bei dieser Veranstaltung nicht. Ich freue mich neue Leute kennenzulernen! Mit geschmackvollen Grüßen, Duncan

Do you want to play Beach Volleyball, just for fun? Are you a bit unfit, a bit old, or a bit Terrible? Want to have a relaxed game and maybe a drink after? Then Terrible Beach Volleyball is for you! NOT SUITABLE for competitive players - we just want to have fun with no pressure.

**Rust Berlin Talks** is back for another evening of talks, shared ideas, and networking. Join us to learn, share, ask, and connect. If you work with Rust professionally, use it in side projects, contribute to open source, or are simply curious to learn more, you are very welcome. **Agenda** * Doors open: 18:30 * Start: 19:00 * Talks * Open mic / lightning talks * Networking **Speakers** Egor Lebedev - Welcome and a short note from the RustRover team Wolf Vollprecht - Pixi - A cross-platform package manager written in Rust One more speaker - To be announced soon **Speaker Bios** Wolf Vollprecht is the founder and CEO of prefix.dev, where he builds open-source software supply chain infrastructure for the conda ecosystems. Core projects include Pixi (a cross-platform package manager written in Rust), rattler (crates to work with Conda packages), and rattler-build. With \~7 years in the conda ecosystem, including creating Mamba during his time at QuantStack, Wolf has a lot of experience in making package management fast, reproducible, and secure. **Open mic & future talks** We’ll reserve a few short slots for anyone who wants to share something with the group. This can be a quick idea, a project, or an experience. Slides are optional. If you’re interested in giving a longer talk at a future meetup, this is also a good opportunity to connect with the organizers. **Venue & access** Please arrive on time. We will have someone at the entrance to let people in between 18:30 and 19:15. After that, access becomes more difficult as the doors are locked and require manual opening. **Registration** The venue has limited capacity and events typically fill up with a waiting list. If you register and can no longer attend, even at short notice, please un-RSVP so someone else can take your spot. Looking forward to seeing you all!

**Build for Everyone — Accessibility for Mobile** Flutter Berlin is hosting a joint meetup with Kotlin User Group Berlin and CocoaHeads Berlin, focused on building accessible mobile apps. **Location:** Hedwig-Dohm-Haus, Berlin We’ll cover both strategy and hands-on implementation — from understanding platform differences (Android, iOS, cross-platform) to real-world accessibility pitfalls and live testing. With: **Important:** Registration is via Luma, not Meetup. Please register here: https://luma.com/xo7d3vb4

**The TypeScript Berlin meetup is back!** After a long break, we're reviving the meetups for 2026 and we'd love to see you there. Whether you've joined us before or you're coming for the first time, welcome! Come round for talks, snacks, good conversations, and a chance to connect with other TypeScript devs in Berlin. *** **🎙️ Interested in speaking?** We have an ongoing call for speakers for this event as well as future ones. [Fill it out here](https://tally.so/r/jaGa1J). *** **📅 Schedule** * 18:30 - Doors open, drinks and snacks 🍕 * 19:00 – Welcome 🤝 * 19:05 - Talk 1: TBC 🎙 * 19:35 - Talk 2: TBC 🎙 * 20:05 - Break 🥤 * 20:20 - Talk 3: TBC 🎙 * 20:50 - Wrap-up * 21:00 - Doors close 👋 *** This meetup is organised by [Prisma](https://www.prisma.io/). By attending the event, you agree to abide by our [Code of Conduct](https://www.prisma.io/event-code-of-conduct). For questions, reach out to events@prisma.io

Herzlich Willkommen zum WordPress Meetup Berlin! Auch im Jahr 2026 treffen wir uns weiterhin am letzten Mittwoch des Monats. Wir versuchen, abwechselnd Themen für Anwender\*innen und Developers behandeln. **Programm** 19:00 \| Einlass 19:15 \| Thema: wird noch gesucht 20:15 \| "Flohmarkt" Jede\*r kann kurz ein Gesuch oder Angebot in wenigen Sätzen pitchen. Bitte achtet darauf, dass es nicht zu kommerziell wird. 20:30 \| Happiness Bar\, freies Networking & Gespräche\. Bei Fragen oder Problemen mit WordPress könnt ihr uns gerne ansprechen und wir helfen euch mit eurem Problem. Das nennen wir "Happiness Bar". **Teilnahme** Die Teilnahme ist kostenlos. Essen und Getränke können wir leider nicht bereitstellen. Es gibt einen Snack/Getränke-Automaten und einen Kaffee-Automaten in der Bibliothek. Ihr könnt euch auch gerne etwas mitbringen und im Meeting-Raum essen. In der Umgebung gibt es einige Bäckereien, Spätis und Imbisse. Wichtig ist nur, dass wir den Raum wieder sauber hinterlassen. Falls ihr euch angemeldet habt und es doch nicht schaffen solltet, meldet euch bitte ab, damit wir einen Überblick über die Teilnehmerzahl behalten. **Barrierefreiheit** Die Location ist barrierefrei für Rollstühle. Falls ihr Unterstützung bei der Teilnahme oder Anforderungen an die Barrierefreiheit habt, schreibt uns gerne eine Nachricht. **Code of Conduct** Als WordPress Meetup verpflichten wir uns den Code of Conduct (sprich: unsere "Verhaltensregeln") einzuhalten:[ https://wpmeetup-berlin.de/regeln/](https://wpmeetup-berlin.de/regeln/) **Weitere Details und Infos** WPMeetup-Berlin Website: [https://wpmeetup-berlin.de/](https://wpmeetup-berlin.de/) Facebook-Gruppe "WordPress Berlin Brandenburg": [https://www.facebook.com/groups/331013360390412/](https://www.facebook.com/groups/331013360390412/) Twitter Account @wp_berlin: [https://twitter.com/wp_berlin](https://twitter.com/wp_berlin) #WPBerlin **Location & Raumsponsor** Ein großer Dank geht an die Bezirksbibliothek Pablo Neruda, dass sie uns den Raum zur Verfügung stellen. [https://www.berlin.de/stadtbibliothek-friedrichshain-kreuzberg/bibliotheken/bezirkszentralbibliothek-pablo-neruda/](https://www.berlin.de/stadtbibliothek-friedrichshain-kreuzberg/bibliotheken/bezirkszentralbibliothek-pablo-neruda/) **English speaking Attendees** \*Notice for our English speaking attendees: We are a German group and therefore most of our meetups and talks are held in German. However, many of our attendees are able to understand English well enough to respond to your questions. Which means: if you understand but don't necessarily speak German, that should be perfectly fine.

The next **Berlin C++ Meetup** hosted by think-cell takes place on **Tuesday, May 26**. Join us for an evening with the Berlin C++ community! This meetup is a chance to step away from your day to day work, meet other developers, exchange ideas, and have real conversations about modern C++ in a relaxed setting. \-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\- ## **Talk** ### **Contract assertions on virtual functions** *Timur Doumler – Citadel Securities* Contracts assertions were introduced in C++26, but they cannot be applied to virtual functions. To close this gap, we first need to answer the question: how should contracts assertions behave in the presence of inheritance and runtime polymorphism? In this talk, Timur explores why this problem is harder than it looks. He reviews existing approaches from other languages, such as Eiffel, D, and Ada, highlights why they don’t fully translate to C++, and outlines the key design challenges involved. He then presents a concrete proposal for how contract assertions on virtual functions could work in C++, balancing correctness, safety, and usability. Along the way, the talk touches on good API design, the true meaning of the Liskov substitution principle, and how to reason about program correctness. \-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\- 📅 **Date & Time:** Tuesday, May 26, 2026 – 18:30–21:30 📍 **Location:** Le Wagon Coding Bootcamp, Rudi-Dutschke-Straße 26, 10969 Berlin 🕒 **Agenda** 18:30 – Doors open 19:00 – Talk + Q&A 20:40 – Pizza, Drinks and Networking \-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\- **RSVP now to save your seat!**

BHNT #112: the fifth BHNT in 2026. The title is inspired by the issues around Bambulab (Boo). Your hacks do not have to be connected to the title (bonus points if they do though) Please RSVP and bring your hacks! There are 8 dynamically allocated Slots that consist of 5min presentation + 5min conversation with the audience. To refresh your memories or get familiar with the concept - see some old hacks here: [https://bhnt.c-base.org](https://bhnt.c-base.org/) Hope to see you - looking forward! [RSVP here](https://platform.openmeet.net/events/bhnt-112-bamboo-hacks-8zv0v)

Join us for an evening on the practical side of AI agents. We'll dig into context engineering and why relevance matters more than prompt tricks, then look at what it takes to run autonomous agents safely alongside humans. Food and drinks provided — stick around after for networking. ✍️ RSVP asap as capacity is limited so grab your spot asap! 📅 **Date and Time** Wednesday, May 27, 2026 from 18:00-20:45 📍 **Location** [EBCONT office, beyond Quartier Heidestrasse, 34, 10557 Berlin](https://maps.app.goo.gl/aQGPgteqhQ2yrmx96) 📝 **Agenda** 18:00 – Doors open, arrivals and check-in 18:20 – Welcome note by EBCONT 18:30 – **Agent Builder Hope is not a strategy — relevant context for data driven agents** by Anderson Queiroz — Elastic *What are agents and context engineering? And why we think the "center of gravity" for context engineering is much more about relevance and your data than only prompts and memory management.* 19:00 – Q&A & quick break 19:15 – **Adapting to AI in Security** by Jenny Pinheiro — Tines *Best practices for autonomous AI and human interaction in the context of workflows.* 19:45 – Pizza, drinks & networking \*\*\* Invite your friends and join us for an evening of learning and networking with fellow engineers and speakers! Thank you to **EBCONT** for hosting and to **Tines** for teaming up with us on this one!

Join us for **[Nathan Leiberman](https://www.linkedin.com/in/nathan-richard-lieberman/)**'s talk ... Had enough of writing the same flex classes for the hundredth time? Tired of diving into your coworker’s cobbled container class? Tailwind CSS is here to save your sanity. Tailwind gives you a well-organized, utility-first approach to styling. This CSS framework eliminates naming debates, halts stylesheet scavenger hunts, and satisfies your marketing team’s whims with clear, composable class names and a powerful configuration system. You’ll spend less time fighting CSS and more time building beautiful interfaces. In this talk, I’ll walk through an interactive demo of Tailwind CSS and cover the following topics: * Set up Tailwind CSS in your project * Understand Tailwind’s utility classes and how they work * Integrate breakpoints and dark mode like a pro * Customizing Tailwind to fit your style Ditch your spaghetti stylesheets and come see how Tailwind CSS can make your project lighter, cleaner, and a lot more fun to build. Your future self will thank you. ***Bring your laptop and expect to write some (non-AI generated) code!*** Food and drinks will be available. **LOCATION:** 6515 Longshore Loop, Suite 300, Dublin, OH 43017 **FREE PARKING:** 6725 Longshore Street, Dublin, OH 43017

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/

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

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

Who’s up for a pizza night at the highly requested Pizza House? 🍕🍻 Join us at for great pizza, good laughs, and even better company! Come hungry and ready for a cheesy good time.

**✅ Salsa Wednesdays with Todd Smith!** **👉 Beginner Salsa Class** **$15 In Advance / $20 At the Door** 7:00 pm – 7:15 pm … Registration 7:15 pm – 8:15 pm … Beginner Class **👉 Intermediate Salsa Class** **= $15 In Advance / $20 At the Door** 8:15 pm – 8:30 pm Registration 8:30 pm – 9:30 pm Intermediate Class **👉 If You Take Both Salsa Classes** **= $25 In Advance / $35 At the Door** **👉 Buy Advance Tickets Now at:** https://columbussalsadancing.com/salsa-wednesdays-dance-class-tickets/ **👉 Questions? Text Todd @ (614) 774-8146**

🔥 Lincoln Street Salsa HAS MOVED TO EVERY FRIDAY, NO MORE SATURDAYS! 🔥 Lincoln Street Salsa @ 1717 Brice Rd, Reynoldsburg 43068 🔥 Salsa, Bachata, Merengue Dancing! 🔥 NO PARTNER OR EXPERIENCE NEEDED! 🔥 Every FRIDAY, 8 pm - 1 am 🔥 8:00 pm - 8:30 pm = Registration 🔥 8:30 pm - 9:30 pm = Beginner Dance Class 🔥 9:30 pm - 1:00 am = Open Dance Party 🔥 LincolnStreetSalsa.com 🔥 Questions? Text Todd 614-774-8146