C#

**Hosted by Pure Storage** Please note at the Pure Storage office, all meetup attendees will be required to sign a generic NDA used for all office visitors to be able to attend the meetup. Doors are open from 17:30, talks will start 18:00, and we have 2 talks and panel discussion. **1\. Daniel Turecek \(Pure Storage\) \- What is new in Go 1\.26** In this lightning talk, we’ll tour what’s coming in **Go 1.26** (based on the current draft release notes) and why it matters for real-world services. We’ll cover runtime and performance wins like the default **Green Tea GC**, faster **cgo** calls, improved stack allocation, and new profiling options aimed at spotting goroutine leaks. We’ll also look at security and crypto upgrades including 64-bit heap address randomization, the new **`crypto/hpke`** package, and **post-quantum hybrid key exchange on by default in TLS**. Finally, we’ll touch on pragmatic developer-experience changes—from `new(expr)` and richer generics constraints to tooling updates like `go fix`, `pprof` flame graphs by default, and compatibility-oriented module defaults. **2\. Vilibald Wanca \- Nail the Basics \- S01E02** Good Go code starts with a simple, predictable layout. In this talk, we’ll cover the standard approach to structuring Go projects: keep things flat early on, map one package to one directory, and keep tests right next to the code they validate (like `user.go` and `user_test.go`). We’ll also look at common structural mistakes—such as over-engineering too soon or importing Java/Python-style layering that fights Go’s package model—and how to avoid them. Finally, you’ll leave with a handful of quick wins you can apply immediately: formatting and import automation with `gofmt`/`goimports`, stronger feedback loops with `golangci-lint`, and editor setups (VSCode Go extension or GoLand) that make the “Go way” feel effortless. **3\. Panel discussion with our speakers on AI tools and Go development** Join us for a panel discussion with our speakers on how AI tools are changing Go development in practice. We’ll compare real workflows for using assistants to design, code, test, refactor, and review Go services—what actually saves time, what introduces risk, and where humans still need to stay firmly in the loop. Expect practical tips on prompt patterns, maintaining code quality, avoiding “AI-shaped” over-engineering, and integrating AI into existing tooling like linters, editors, and CI. Bring your questions—we’ll keep it candid, concrete, and Go-focused.

We’ve got another portion of AI talks for you, so come to our second Prague Gen AI Meetup of the year. ## NEW VENUE (very important) **Pracovna & Laskafe** Vlkova 628/36, 130 00 Praha 3-Žižkov ## Venue Schedule * **18:30** Doors open * **18:45** Talks start * **20:45** Talks end * **21:00** Snacks and beer ## What’s On The Agenda * **Talks:** Again, no hype, just the stuff you want to know. * **Snacks and Beer:** Grab a bite and a brew while talking shop. * **Networking:** Meet other people in the field. No fluff, just good tech talk. ## Talks ### Šimon Podhajský (Head of AI @ Waypoint) **The Eval Flywheel: From "Works on My Laptop" to Systematic Quality** Most teams shipping GenAI products have no evaluation system. They have vibes, a few saved prompts, and hope. This talk doesn’t start with “build an eval suite”, it starts with **observability**: if you can’t see what’s happening in production, nothing else matters. From there, we build the **eval flywheel**, a practical pattern where production observability feeds error analysis, error analysis generates eval cases, and eval cases prevent recurrence. Your evaluation suite isn’t something you design upfront, it’s something that grows out of understanding your production failures. ### Ondřej Romancov (Engineering Lead @ Duvo.ai) **Building agents with agents** Duvo is building a platform for AI agents, and we’re running our engineering on agents too. Sharing practical tips and workflows we’ve found useful along the way. Let’s get down to the real talk.

Are you learning English as a second language and looking for a chance to practice? Join our **English Conversation Club**! We create a friendly atmosphere with **games and activities** designed to help you improve your conversational skills. Our goal is simple: **leave each session with new words and more confidence speaking English!** **Details:** * **Cost:** Free (bring some money to buy a drink at Tichá Kavárna) * **Frequency:** Meets regularly based on attendance * **Who:** Anyone studying or practicing English **Things to know:** Tichá Kavárna is a social enterprise café that creates jobs for the deaf community and connects the hearing and deaf worlds. Guests can order in sign language or simply point to the menu, making communication easy. Profits support services for the deaf and the café’s development. This event is sponsored by the church **Církev bratrská, Bohnice** [https://www.cbbohnice.cz](https://www.cbbohnice.cz/). We believe in helping others with practical needs—like learning English—while we live lives that reflect Jesus. At the end of each session, we’ll offer an open invitation for anyone interested in exploring faith, reading the Bible, or learning more about Jesus. **Participation in religious activities is completely optional.** We will never trick you into attending and will always be honest about the content of our meetings.

In a world full of opinions, noise, and quick reactions, we often miss spaces for real dialogue — for slowing down, listening, and connecting with one another. This evening is an invitation to do exactly that. Join us for an open and friendly evening (in English & free of charge) dedicated to Automated Commonwealth (UBI - Universal Basic Income), can we use AI for people's welfare? Is it a basic income what we really need? We will brainstorm together in an Open Space–style format, where participants choose topics themselves, and what we want to discuss from this broad topic - questions to help you get inspired: Is it possible to achieve automated UBI? Is UBI what we need, or is it better social infrastructure? How do we start building such system? Afterwards, participants will form small groups to explore the questions and insights around the topics 18:00 – Doors open 18:15 – Introduction & topic selection 18:40 - We start discussions 19:40 - Closing session (sharing activities) 20:00 - Networking & Connect What to expect: A welcoming space for newcomers and regulars alike Be slightly pushed to socialise Open, participant-led small-group discussions on diverse perspectives No expertise required — everyone’s opinion matters! Safe, respectful, and judgment-free conversations More about sharing and reflecting than debating or convincing No pressure to speak — listening is just as valuable Not a lecture, not a debate club, and definitely not intimidating! Feel free to bring some snacks to share! Friendly dogs are welcome! If you are a regular that appreciate us and can help, or a newcomer who enjoyed the evening, and wants to help, we have recently set a patreon page where you can support us! https://www.patreon.com/cw/EarthSocietyDialogues

\~FREE EVENT\~ Meet Locals & internationals People Every Tuesday & Make New Friends🙂 For introverts and shy people (we all are sometimes), we have ice-breaking games and more... so feel free to come by. Everyone is invited to enjoy amazing Cocktails in 135kc only🍸 Beer in 49 kc 🥂🍻 It is organized after our Biggest Event in Central Europe with 234 people in a single event. 🙂 📍LOCATION TEQUILA TALES BAR & MUSIC CLUB Újezd 409/19, 118 00 Malá Strana, 118 00 Prague, Czech Republic (Nearest tram stop- Hellichova & Ujezd) ❓Questions❓ Follow & write to https://www.instagram.com/tequilatales_prg/ *** \~AKCE ZDARMA\~ Každé úterý se seznamte s místními a mezinárodními lidmi a najděte si nové přátele🙂 Pro introverty a stydlivé lidi (všichni jsme někdy) máme hry na lámání ledu a další... tak neváhejte a přijďte. Všichni jsou zváni k vychutnání úžasných koktejlů jen za 135 kč🍸 Pivo za 49 kč 🥂🍻 Je pořádána po naší největší akci ve střední Evropě s 234 lidmi na jediné akci. 🙂 📍 POLOHA TEQUILA TALES BAR & MUSIC CLUB Újezd 409/19, 118 00 Malá Strana, 118 00 Praha, Česká republika (nejbližší tramvajová zastávka- Hellichova & Újezd) ❓Otázky❓ Sledujte a pište https://www.instagram.com/tequilatales_prg/

This is an Argentine **tango course from zero.** You can **come, try one class, and decide** if you want to continue. (!) The solo-followers roles are complete. Please **join as a Leader or in a couple**. **No partner** and **no previous experience** needed. Classes take place every Tuesday, 20:00–21:30. **Only for the Meetup attendees:** **Trial class is 300 Kc** February is the **final month to join this course** before the group closes. You can try the classes in February and then decide if you’d like to stay. To join a class, please make sure to: * complete the registration form (which I will send you) * make the payment * and receive a confirmation from me Classes are available **by registration only**.

Who can attend this meetup: The tour is an introduction to Prague and is mainly for expats and visitors to our city but everybody who would like to join is invited. ***Important***, please also fill in the booking form on our [website](https://freewalkingtourprague.eu/en/schedule) if you are planning to come (otherwise we will not expect you). Description: Meet us by the Powder Tower, the historical gate to the Old Town and starting point of the Royal Route. Then have an educative walk through the narrow and picturesque streets of the historical center of Prague. Enjoy the unique diversity of architectural styles from Gothic to Art Nouveau. See some of the most interesting sites and get to know fascinating facts and legends of the 1000-year old capital of Bohemia. End the tour at the riverside 5 minutes away from the Charles Bridge, from which you can continue the tour on your own (or again with us) towards Malá Strana or Prague Castle. ====== Meeting point: We will be standing by the Powder Tower at the side of the Namestí Republiky square with a green umbrella in hand :) Map: https://goo.gl/maps/tzqKpZ2945S2 Price: there is no fixed price, you will be able to decide yourself how much you value the tour. If you don't know how much is best (and can afford it) we recommend 200Kč, but it really depends on you how much you contribute. Join us also on our [Facebook profile](https://www.facebook.com/freewalkingtoursprague/) :) and if you are travelling to other cities check out our friends at the [Free Tour Community website](https://freetourcommunity.com/). For any questions, please contact us at info@freewalkingtourprague.eu. Unfortunately, the meetup application does not always send us phone notifications. Reminder - only people who booked on our [official free walking tour website](https://freewalkingtourprague.eu/en/schedule) can join the tour and if the tour shows fully booked on the website it means there are no free spots. The meetup list doesn't count in this case. We look forward to meeting you, Michal, Amanda, Lana, Iva & Chris

**Talks:** *Cyber ​​Resilience Act and Open-Source* *by* *Kayla Eilhart* * how the CRA was created and what it is for * how we almost lost open-source * what the CRA and related legislation and regulation introduce in connection with open-source * what further legislation and regulation related to the functioning of open-source in the EU awaits us * links to information, working groups and how to participate in the legislative process **Schedule** **18:30** – Doors open **19:00** – Talk “*Cyber ​​Resilience Act and Open-Source*” 19:45 – Lightning talks: add yours to [https://bit.ly/prpylight](https://bit.ly/prpylight) after 20:00 – Networking **Good to know** * You don’t have to register for this meetup – the actual attendance is much bigger (40–70 Pythonistas) than indicated in the “Going” list here. * **Cash only payments – club doesn’t accept cards.** * Talks at Pyvo are mostly in Czech but it there’s somebody who doesn’t understand Czech talks are switched to English if the speaker is able to do so. * Besides both soft drinks and beer it's possible to eat at the club. Choice is variable and consists of 4 to 7 options ranging from toast, sausages and soup to fried cheese in a bun, goulash or schnitzel. * Club closes at midnight.

• What we'll do This meet up is for those who are learning English as a second language and want a chance to practice. We will provide a fun and interesting activity to encourage simple English conversation. It may be a game, an interesting topic, or whatever. We promise to keep the evening relaxed and give you a chance to practice your English. • What to bring Just you. • Important to know We are hosted by Do Slova Praha. As a church, we want to help our community in practical ways. We may hand out information to other events that our church does, but do not worry... this is not a religious event. Just come to practice English :) [https://www.doslovapraha.cz/](https://www.doslovapraha.cz/)

Let's play badminton at Sports Centre Olšanka. We'll meet at 10.40 and play for 60 minutes. If you have a Multisport card please bring it along, as it will make the court free for you and also reduce the cost for others. If you don't have a Multisport card the game will cost you a maximum of 150 crowns, probably much less. I will cover the cost of the court so please bring cash to pay me. There is a small organisation fee of 20 crowns for all players to participate in this event. Racquets can be rented for 50 crowns.

**5-a-side Football** practice at Rajská Zahrada artificial grass pitch. No cleats shoes. Maximum of 15 participants for a 3 teams of 5 rotating. **Kick off at 18h00**. Everybody is welcome, no age, gender nor any restriction of any type to join. Cost: **90 crowns**. Please send the money using the **QR Code** stored here: https://imgur.com/a/G8NWGjM In case of any Opt-out within 24h of the session, or no show, the payment will be due (you still can ask someone to come instead of you, as your spot will be booked)

Free Event/Vstup Zdarma Pro češtinu, podívejte se níže EN Hello, people of Prague!! We bring you a forum to trade your language skills and learn something more. If not interested in language, you could have a general conversation. The goal is to create a chill environment for social networking with a focus on learning the language of your choice. So grab some beverages at the bar/cafe and get on with it every Thursday. **NEW** Venue: Tequila Tales Bar **NEW** Location: Ujezd 409/19, 11800 Malá Strana Timing: 1900-2200 (Every Thursday) \-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\- CZ Ahoj Pražáci!! Přinášíme vám fórum, kde můžete vyměnit své jazykové znalosti a dozvědět se něco víc. Cílem je vytvořit pohodové prostředí pro sociální sítě se zaměřením na výuku jazyka dle vašeho výběru. Takže si vezměte nějaké nápoje v baru/kavárně a pusťte se do toho každý čtvrtek. **NOVE** Místo: Tequila Tales Bar, Ujezd 409/19, 11800 Malá Strana Čas: 1900-2200 (každý čtvrtek)

Weekly Czech Conversation Meetup 📅 Every Thursday \| 🕢 19:30–21:30 📍 Tequila Tales, Újezd 409/19, Praha 1 Are you an expat in Prague learning Czech at A1 or A2 level? Ready to stop just studying and start speaking? Join our Weekly Czech Conversation Meetup – a focused, interactive session designed to help you speak more confidently in Czech through fun, practical, peer-based learning. 🎯 What to expect: Structured, casual Czech-speaking sessions Fun language games, real-life scenarios, group challenges Peer-to-peer learning (no teachers – just motivated learners!) No grammar overload – just speaking and using what you know 🧠 Who is this for? A1 and A2 level learners (not for absolute beginners) Expats in Prague who want to practice Czech in a supportive space People who are ready to actively participate – speaking is a must! 📝 Important: Preparation is required. Each week, you’ll get a short prompt or task in advance. Everyone must come ready to engage. 💬 Why join? Build real-life speaking skills Break the fear of using Czech Meet other motivated learners Get out of your Duolingo comfort zone! 🌍 This is a focused Czech-only session, happening from 19:30 to 21:30, as part of the larger Uninstall Duolingo Language Exchange night every Thursday.

\-\- ENTRY: 100 CZK \-\- 🎶 Everyone is welcome to the Open Mic Jam at Coffice every Friday evening. Enjoy a variety of drinks and food while listening to local artists. 👉 You can also be part of the fun and bring your talent by singing or playing a musical instrument. 👉 This event is already a classic for Fridays night in Prague, so don't worry.. there is always lot of people coming. 📍 WHERE: Coffice Prague: Malířská 14 - Holesovice (the closest tram stop is Kamnicka and Letenske Namesti) 🍸 The bar offers cocktails at promotional prices. There is as well beer, wine and more. 🍴 If you are hungry, we have delicious empanadas, a unique Argentinian food. 🪴 Come to enjoy our new place with a beautiful garden. ℹ️ If you get lost or need more info, just call or write on WhatsApp: Martín +420 774 890 273 Enrique +420 605 032 851 -- CZ 🚨Po několika týdnech ticha... COFFICE JE ZPĚT! 💪 Tímto pre-opening Open Mic-em chceme oslavit, že jsme zase spolu a už se na Vás moc těšíme. 👉 Zapište si novou lokalitu: Malířská 14 - Holešovice. 🚨 🎶 Všichni jsou vítáni na týdenním Open Mic Jamu v Coffice každý pátek večer. Vychutnejte si různé nápoje a poslechněte si místní umělce. 👉 Můžete se také zapojit do zábavy a přinést svůj talent zpěvem nebo hrou na hudební nástroj. 📍Nezapomeňte, že Coffice je zpět na novém místě! Adresa je Malířská 14 - Holešovice (nejbližší tramvajová zastávka je Letenské náměstí) Přijďte si užít naše nové místo s krásnou zahradou. Pokud se ztratíte nebo potřebujete více informací, stačí zavolat nebo napsat na WhatsApp: Martín +420 774 890 273 ........................................................................................................... FB: www.facebook.com/cofficeprague IG: https://www.instagram.com/cofficeprague 🌎 www.cofficeprague.com ........................................................................................................... By participating in our events, you agree to be photographed and/or filmed that might be shared on our social/ commercial purposes. Post your pictures and tag us @cofficeprague ........................................................................................................... Interested in our Events? 📩 info@cofficeprague.com 📞 Phone/WhatsApp: +420 774 890 273 Join the Group on Facebook: "Daily Meetups in Prague" ........................................................................................................... Are you looking for a Coworking Space in Prague? We have joined forces with Locus Workspace in Vinohrady and with this some benefits: \- 30% discount on your 1st month\. \- Those who are members of Locus\, will be able to work in both locations\. There in Vinohrady and here in Letna\. \- Free Trial Day If you are interested, please contact Us Via WhatsApp +420 774 890 273 or email (info@cofficeprague.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** *Spec-Driven Development with GitHub Spec-Kit: From Intent to Implementation* Spec-driven development flips the traditional workflow on its head: instead of code being the source of truth, the specification becomes the backbone of design, collaboration, and delivery. In this session, we’ll explore how GitHub Spec-Kit enables teams to treat specifications as first-class artifacts—living documents that drive architecture, implementation, and verification. You’ll learn how Spec-Kit helps teams clearly express intent using structured, version-controlled specs that live alongside code. We’ll walk through a practical workflow that starts with defining system behavior and constraints, then progressively refines those specs into testable, automatable outcomes. Along the way, we’ll show how specs can reduce ambiguity, improve cross-functional collaboration, and make design decisions explicit before a single line of production code is written. This talk will cover: --What spec-driven development is (and what it isn’t) --How GitHub Spec-Kit fits into modern developer workflows --Using specs to align product, engineering, and AI-assisted development --Real-world examples of turning specs into implementations with confidence Whether you’re building greenfield systems, integrating AI into your stack, or trying to reduce costly rework, spec-driven development offers a scalable way to move faster without sacrificing clarity. Attendees will leave with concrete patterns and a clear mental model for adopting GitHub Spec-Kit in their own projects. **YouTube Link** TBA

On Thursday, March 12, 2026, we will meet at the TEKSystems offices at 700 N Hurstbourne Pkwy. Doors will open at 6:00 p.m., and the presentations will begin sharply at 6:30 p.m. Along with an excellent presentation, TEKsystems will provide food. Please RSVP so we know how much food to order. Afterward, we will go to Brick House Tavern for drinks and food to continue the conversation. The session will also be broadcast at https://twitch.tv/TaleLearnCode. ### Much Ado About Nullable - C# Nullable Reference Types Explained 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.

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

Meeting @ Improving's office in Downtown Columbus, near Cosi. Parking is paid, food & drink are free! This time we're hanging out after the long winter break. We are going to look at a group-member's project used to help learn the fundamentals of Go, and if time allows, we can take a look at how we like to build Go projects using AI.

**NEW LOCATION: 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). See the handy Parking Map - we recommend street parking. [Street Parking Map](https://docs.google.com/presentation/d/1u2A4fLNlxwLJn0KA_hKc8bnFlFHLvsHBDh-_8wzX_tk/edit?usp=sharing) 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 centralohpython@gmail.com

We will have lunch at Cap City Diner in Gahanna at 12:00 then walk over to the theater afterwards. The Movie Solo Mio starts at 1:20.It will be posted when tickets available to purchase probably the week before then we’ll post our seat number so we can all sit together 😎

**New Dojo Location!** **Draft Day Columbus** 1130 Dublin Road Columbus, OH 43215 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 topic suggestions and people interested in presenting at our monthly meetings. To this end we've set up a survey form at [https://docs.google.com/forms/d/15eBKF1nQQ2XS5gzD4rvhVRHMBEj7lJtHuA9wXupS3Uc](https://docs.google.com/forms/d/15eBKF1nQQ2XS5gzD4rvhVRHMBEj7lJtHuA9wXupS3Uc)