C#

Elixir London Meetup; February 2026 edition. All are welcome. **Session 1: Bryan Hunt - Faria Data Platform: Building a data platform in Elixir** How to build an ETL pipeline using Amazon Athena, and Elixir: techniques, tools, UX, lessons learned. **Session 2: Christoph Beck** **\- Structured Generation and Logits Processing with Elixir** Ever tried to get a poem from an LLM doesn't contain the letter \`e\`? Large Language Models are kind of amazing and surprisingly unreliable at the same time. Using Elixir's Bumblebee and open source LLMs, you can get much better control over the generation. We introduce you to logits processing, and how it can be used to achieve what ChatGPT can not accomplish. *The event is kindly sponsored by* [Verna](https://verna.earth). **Time** Doors open at 18, start at 18.30. **Venue** Geovation F4, Sutton Yard, 65 Goswell Rd., London EC1V 7EN **Refreshments** Food and drinks will be provisioned on the day. **IMPORTANT**: **If you wish to take photos and post online during the event, please notify organisers first, so that attendees can opt-out from being in photos.**

We are delighted to announce an evening of demos and a roundtable discussion on what you want to see from the meetups. There is also still time to feedback with the link below [Umbraco London Meetup Questionnaire](https://docs.google.com/forms/d/e/1FAIpQLSfISk1q_ZEoN82_vhiBeWwuVG3fUUB4uqkK-PqWtArajUErJw/viewform) We are welcome from 18:30, we shall look to get started around 18:45. We'll finish by 21:00 when we take the conversations to a local pub. \-\-\-\-\- **Experiments in V17** *by Matt Bliss - Technical Director* Matt will guide us through some of his experimentation in V17 and his learnings. **AI: Am I Too old for this \*\*\*\* (stuff)** *by Andy Hawken* Andy asks the big questions and he's going to talk about his experiences with Claude AI in January and a bit of February too. **Meetup feedback rountable** *by Richard Thompson and the meetup team* Richard will run us through the results of the feedback survey on the meetup and we'll have a discussion on what people want to see from the meetups. \-\-\-\-\-\- This is Embrace will be kindly providing some refreshments. Space is a bit limited so if you realise you can't make it please be sure to change your RSVP to No in case there are people on the waiting list. \-\-\-\-\- If you would like to contribute to our meetups please in touch by email ([hello@umblondon.co.uk](hello@umblondon.co.uk)) - we are always looking for people to give talks, or London-based Umbraco agencies to host us for the evening. Please read the [Code of Conduct](https://bit.ly/UmbLondonCodeOfConduct) for all our events.

**BOOK HERE**: https://sportas.co.uk/games/45124 **Game Description:** 👟 Drills led by experienced players who also join the session. 💪 Intense volleyball skills practice for individuals. 🎮 Drills and game setting. 🌟 Positive co-learning environment for rapid improvement. 🏐 Access to 18 volleyballs. **Rules** \- point to 15 \- max 2 games in a row \- 3 team of 6 players \- modified games situation might be applied depending on situation \(5:1\, modified 5:1 or 6:2 etc\.\)

👋 General Info Hi friends, We’re excited to kick off our next React meetup on **February 18**! Join us for an evening of practical insights, great conversations, and community vibes — from real-world React talks to networking with fellow engineers. **🗣 Call for Proposals** Have an idea or story to share? Submit your talk proposal through our[ ](https://forms.gle/8gZfT3Qkfd71CxyK6)[CFP form](https://forms.gle/rCiQ8Y4jajiC8AHMA) and take the stage at one of our upcoming meetups! **🤝 Organized by** This event made possible thanks to the support from[ React Summit](https://reactsummit.com/) and[ JSNation](https://jsnation.com/) organizers –[ GitNation](https://portal.gitnation.org/). **🤝 Hosted by** Huge friends to our friends [Figma](https://www.figma.com/) Figma is a browser-based design and prototyping tool enabling real-collaboration. Built for developers, Figma's Dev Mode gives you the power to easily inspect designs and translate them into code—without changing the design file. Headquartered in San Francisco, in 2020 Figma opened its EMEA HQ in London. We’re a team of makers who celebrate our differences and share a passion for our community. Our London based engineering team is growing quickly and working on some of Figma's top company priorities. 🤝 **Want to support our community?** We’re looking for venue partners and sponsors for future meetups. Let’s discuss collaboration — [contact us](https://forms.gle/zWYxsanfbhV64dEr5)! **🕑 Event Schedule** * 18:00 - Doors open - snacks, beer, socialization * 18:50 - Opening notes * 19:00 - **The Lost Art of Debugging: Why Your Browser is Smarter than AI - [Abdullah Ola Mudathir](https://www.linkedin.com/in/cruxcodes/)** * 19:25 - **Why Your Marketing Scripts and Cookie Banners Are Ruining Your Lighthouse Scores - [Christopher Burns](https://www.linkedin.com/in/burnedchris/)** * **19:50 - Networking, Open Mic Lightning Talks** * Mingle until 21:00 pm 🗣️ **Talks** ➡️ **The Lost Art of Debugging: Why Your Browser is Smarter than AI - [Abdullah Ola Mudathir](https://www.linkedin.com/in/cruxcodes/)** *The easiest thing to do is often what causes hours of debugging down the line. With LLMs becoming increasingly normalized in the industry, an overreliance on them can allow bugs to slip through the cracks.* *In this talk, I'll demonstrate a practical debugging workflow: Debug first. Prompt second. I'll show how browser DevTools reveal what's actually happening faster than any AI can guess.* *You'll learn:* * *Essential DevTools features that improve your bug-fixing prowess* * *When to reach for your browser and when AI can actually help* * *The almost forgotten art of breakpoints and strategic console messages* *AI in your codebase represents growth, but understanding your runtime state represents mastery. This talk is about balancing both and knowing which tool to reach for first.* ➡️ **Why Your Marketing Scripts and Cookie Banners Are Ruining Your Lighthouse Scores - [Christopher Burns](https://www.linkedin.com/in/burnedchris/)** *Most marketing scripts and cookie banners run on the critical path. They block the main thread, delay first paint, and inject third-party code before the page is interactive.* *Consent managers often make this worse by synchronously loading vendors, mutating the DOM repeatedly, and re-hydrating UI after page load. The result is slower LCP, higher TBT, and unstable CLS.* *The fix is not fewer scripts, it is better orchestration. Treat consent as infrastructure, load vendors after intent, and keep compliance off the critical path.* — **👍 Code of Conduct** By registering for this event you agree to comply with our [CoC](https://gitnation.com/coc) **📩 Contact** events@gitnation.org https://twitter.com/ReactAdvanced http://youtube.com/ReactConferences https://bsky.app/profile/reactadvanced.gitnation.org

Join us for some fun, competitive, but friendly games at our 4-court sports hall. We use Hybrid Kawasaki Kong 500's during the 3-hour session. **PAYMENT** * **Session Fee: £12** * We are cashless, kindly pay the session fee **by midnight** on the night before the session. You are welcome to pay early! You can even pay when you book! See our About page for the full process. * If no payment is received, you will be removed and may even be liable for a late cancellation fee if your spot is not taken. * Please use **“your meetup name + date of event”** as payment reference * **Account name:** Thomas Lam * **Sort code:** 04-00-03 * **Account number:** 7478 8608 **LATE CANCELLATION OR NO-SHOW** * **All** **no-shows or late cancellations** (24 hrs or less) will be charged if your spot is not taken by someone else - you will have a title next to your name with the amount and date owed. * Members with 2 no shows/late cancellations will be removed from the group unless outstanding payment is received * **The late cancellation policy** is set up to discourage last-minute cancellations and therefore applies with or without the presence of a waitlist * **Note:** If you are on the Waitlist and a spot becomes available, you will automatically be bumped onto the On list provided the event has not yet started. It is your responsibility to **remove yourself from the waitlist** if you can no longer make it to avoid being charged a no-show if someone cancels late. **PLAYING** * Please wait to be marked off before entering the hall. * Sessions are to finish promptly on the hour by school requests. * If you finish a match with 5 minutes to go, please start packing up instead of starting a new game. **RACKET HIRE** * Please note that we won't be hiring out rackets, so kindly bring your own racket. **PARKING** * There is parking available, but it is now paid parking. Parking is opposite the entrance. Please check the signs for parking payment instructions. **TRACK & TRACE** * We will collect your phone number on-site. Your phone number will also be used in case of fire to contact you if you have not made it to the fire evacuation areas. You can see maps at the venue. We are excited to see you guys on the court! Team LSBC

**BOOK HERE**: https://sportas.co.uk/games/45156 **Game Description:** 👟 Drills led by experienced players who also join the session. 💪 Intense volleyball skills practice for individuals. 🎮 Drills and game setting. 🌟 Positive co-learning environment for rapid improvement. 🏐 Access to 18 volleyballs. Rules \- point to 15 \- max 2 games in a row \- 3 team of 6 players \- modified games situation might be applied depending on situation \(5:1\, modified 5:1 or 6:2 etc\.\) \*Privacy policy for drills and games sessions\* You may not record any footage or take photos during the session unless explicitly authorised by the organisers.

**BOOK HERE**: https://sportas.co.uk/games/44238 **Game Description:** Come and play in a casual 6 aside game on a Wednesday evening ⚽️ It’s a beautiful pitch with larger goals 😍 💦 Showers, changing rooms, water fountain and toilets available. **Directions:** 🚶‍♂️1 minute walk from Poplar DLR station 🚗 No designated car parking **Rules** \- Change keeper every 6 minutes \- Classic 6 aside rules \- No slide tackles\, play safe \- Respect everyone on the pitch

PLEASE NOTE NEW TIME OF 3Hrs. 19.:00- 22:00PM PLEASE MAKE PAYMENT AT TIME OF BOOKING. PAYMENT BY BANK TRANSFER, DETAILS BELOW. NO CASH PAYMENTS_. Your space is not guaranteed until payment is received. Welcome back....Please note our sessions have now returned to Park View. Thankyou to all those members old and new who continued to come and support and play fantastic games of badminton. We welcome you all back. **Please note moving forward the sessions will be pay before play, regardless of whether you pay online or cash in person** Join us for friendly, competition badminton with like-minded enthusiasts. We have sole use of four courts. Players do not have to attend for the entire duration however the price is the same. Please note we limit the amount of attendees to 24 so that everybody gets a fair number of games. Play is from 19:00pm to 22:00pm The cost is £15 per session, which includes feather shuttles. Please pay via bank transfer to the following account: L Samuels Sort code: 040004 Account number: 99854842 Please include your name and date as reference. If you do not show without notice we reserve the right to charge a full non-attendance fee and persistent offenders may be blocked from our club. So please be thoughtful and let us know in good time if you cannot attend. **Rules of attendance/Disclaimer**. Park View Badminton Club exists purely to offer an opportunity for like-minded players to exercise, play and socialise together and nothing more. All attendees should consider the club as an informal gathering of people who will train together in a loosely structured format. The club is operated and managed by a number of volunteers in their free time and these volunteers cannot accept any responsibility for any events that occur at the club. If you have any medical conditions that could affect you, it’s your responsibility to make the club aware of these. Neither the club nor Park View School will take responsibility for any injury, loss or damage that might arise as a result of participation in club activities. Effective warmup and stretches should be undertaken before play to avoid injury and appropriate clothing and footwear is to be worn whilst playing at all times. Every person attending the club must take full and complete responsibility for their own actions. Know your limits! The club does not discriminate against any attendees of ethnicity, nationality, sexual orientation, religion or beliefs, sex or disability except as a necessary consequence of the requirements of safely training and participating in the required sport. All attendees are expected to behave with mutual respect and in a way that does not endanger others or bring the club into disrepute. Not complying with this may result in suspension or termination of attendance. Any matters of concern should be directed to the administrators via email (parkviewbclub@gmail.com).

**BOOK HERE**: https://sportas.co.uk/games/43593 **Game Description:** Mixed nationality and gender players play volleyball in our club for 10 years every Tuesday & Thursday from 8pm-10pm in upper intermediate and advance level. **Rules** Respect each other, focused on your own play and progress, be kind and cheer your team mate.

**BOOK HERE**: https://sportas.co.uk/games/44284 **Game Description:** Come and play in a casual​​​​​​​​​​​​​​​​​​​​​​,​​​​​​​​​​​​​​​​​​​​​​ friendly & social badminton session. The session is for mixed ability players (mainly beginners & intermediate players). So please be respectful and kind towards less experienced players - we all have to start somewhere 🧡 🌱 We use YONEX MAVIS 300 Nylon Shuttlecocks. 🏸 We have a few spare rackets if needed. Format: We play doubles for the whole time and keep rotating opponents/partners across courts so everyone plays each other. **Venue:** 🚪Entrance to the sports hall is on the corner of Celebration Avenue and Temple Mills Ln 🧼There are showers, changing rooms & a water fountain at the venue 🚶‍♂️5 minute walk from Stratford International DLR Station 🚗 Paid car parking is available on site **Rules** Classic doubles rules - can be explained at the start of the session if you’re new to badminton or need a reminder 🤝

**BOOK HERE**: https://sportas.co.uk/games/44249 **Game Description:** Come and play in a Lower-intermediate & above volleyball session in Balham 🔥 ONLY sign up to this session if you’re a LOWER-INTERMEDIATE player or above. If you are a beginner player please don’t sign up to this game, we will cancel and refund you from the game (sorry!). **Directions:** 🚶‍♂️3 minute walk from Balham station (Northern Line). From Balham tube station turn left onto Chestnut Grove road. Walk to the mini roundabout and take a left onto Boundaries Road. After a short walk just past the football pitch​​​​​​​​​​​​​,​​​​​​​​​​​​​ there will be a big green gate on your right. Follow the building around and the sports hall is to your left opposite the hockey pitch. Rules \- 3 teams of 6 \- Games up to 15 points \- Max 2 games in a row \- Please be positive and encouraging to all players 🫶

**BOOK HERE**: https://sportas.co.uk/games/44499 **Game Description:** Come and join our social badminton session in Canning Town - Intermediate players and above. Music 🎶 3 courts Intermediate and above mixed social session Feathered shuttles will be provided. Join our whatsapp Group: https://chat.whatsapp.com/LsLjg8CxI8MIxSFb82qkdb 🚪 Getting Into the School 1\. The school is surrounded by a green fence\. 2\. Entrance is near the stone wall\. 3\. At the gate\, find the intercom on the right\-hand side\. 4\. Press the ‘Call’ button and wait for security to respond\. 5\. When the intercom flashes green\, push the gate open\. \-\-\- 🏸 Finding the Indoor Court 1\. After entering\, go through the visitor gate\. 2\. Follow the corridor to the end\. 3\. Look for the yellow double doors – the badminton courts are inside\! \-\-\- 🚻 Facilities 🔹 Changing Rooms & Toilets \- Located outside the court area in the corridor\. \- Male facilities – right\-hand side\. \- Female facilities – left\-hand side\. 💧 Water Points \- There are three water points in the corridor outside the court\. \- Bring a water bottle to use with the water pump\. Enjoy your game! 🏸🔥 **Rules** Games to 21 Max 2 games on, 1 game off.

All levels are welcome and a great way to share knowledge, practice your Mandarin or English, socialise and make friends. Games that help to develop linguistic skills are very welcome, such as flash cards, cross words, puzzles, scrabble and bananagrams etc. More than 2 guests are welcome. Nearest Tube stations: • Goodge Street Station • Tottenham Court Road Free event (But you should buy a drink to keep the pub happy 😊) For more information please contact Alistair.

**Want to improve your Portuguese and connect with great people?** Join us, where language learning meets community! You’ll get the chance to practice Portuguese in a relaxed, friendly environment, build confidence in conversation, improve your fluency, and make new friends along the way. 📍 *Held at the church building — everyone is welcome!* Every Thursday at 4:30pm - 5min walking from Liverpool Street Station/8min from Moorgate Station Any questions, contact Glauce 0 7852 223881

**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

**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)

This meetup is a beginner-friendly, hands-on workshop focused on building shaders in Unity using Shader Graph. Instead of slides or theory-heavy lectures, we'll build real shaders together step-by-step. The format is structured but interactive. You'll watch a quick demo, then build each shader yourself with guidance. By the end, you'll have created multiple shaders you can immediately use in your own projects—and understand how to make more. **What to Expect:** * Build 4–5 complete shaders from scratch * Color tints, snow accumulation, scrolling water, dissolve effects, and more * No prior shader experience required * Checkpoint files provided if you fall behind * Resources for continued learning All experience levels are welcome. Whether you've never opened Shader Graph or just want to fill gaps in your knowledge, this is a supportive space to learn by doing. **Food and drinks provided. Join us to learn, build, and level up your shader skills.** I added the Unity project to the repo here - https://github.com/EricJRico/IntroToShaders.git This is what we'll be using for the session.