Programming in R

uSwitch is located on the first floor of the ZPG building at 5 Copper Row, London, SE1 2LH, London (Click on the map for directions) What 3 words location: [https://what3words.com/puts.sudden.else](https://what3words.com/puts.sudden.else) The Clojure dojo is a collaborative way to learn Clojure/ClojureScript through practice. The aim is to learn a little more than before you started. This event is for those new to coding through to more experienced developers. We organise into small groups (2-4) people and write code to solve challenges great and small, chosen by those at the event. We aim to ensure someone in your group has some Clojure experience, so you shouldn't feel lost (well no more than all developers do when Stack Overflow is broken). Example challenges for the coding dojo are listed on this website: http://www.londonclojurians.org/code-dojo/ Various past exercises have been loaded to [https://github.com/ldnclj](https://github.com/ldnclj/lisp1.5/blob/master/src/lisp1/5.clj) # Approximate schedule: 18:40 Doors open and start collecting suggestions 18.45 Pizza should have arrived 19:00 Quick intros and vote on suggestions 19:15 Break out into groups and start practising 20:45 Gather together for a quick show and tell # What should I bring? We organise into small groups, so if you have a laptop with a working Clojure environment please bring it along (there are lots of online Clojure environments, so you can just use your browser too). # How do I get in to the building? At the glass doors press the buzzer to inform the security guard you are here. Say you are here for the event on the first floor. Is there way to talk with the Clojure community? Why yes. The Clojurians Slack channel is full of friendly people who love to try and help. People based in London are often in the #clojure-uk channel. Sign up for a free account to the Clojurians Slack community via http://clojurians.net/ What is Clojure? Clojure is a JVM language that has syntactically similarities to Lisp, full integration with Java and its libraries and focuses on providing a solution to the issue of single machine concurrency. Its small core makes it surprisingly easy for Java developers to pick up and it provides a powerful set of concurrency strategies and data structures designed to make immutable data easy to work with. If you went to Rich Hickey’s LJC talk about creating Clojure you’ll already know this, if not it’s well worth watching the Rich Hickey “Clojure for Java Programmers” video or Stuart Halloway “Radical Simplicity” video .

Come and join us every week day from 12.45pm - 2.45pm. Classes for levels elementary to upper-intermediate (A1+ - B2+) Improve your fluency, listening and reading comprehension, grammar and vocabulary with our friendly classes. No payment needed - the classes are **completely free** because the teachers are training with a University of Cambridge accredited program. Join us at 24 Great Chapel St, London, W1F 8FS Take the level test in advance for more information about classes for your level (link to the level test: https://forms.gle/mn3hqUgo3BRLyAUi7) and wait for up to one business day for more information. OR Come 15 minutes early on your first day to do a quick speaking test and find your classroom. See you soon!

Join us for our next Emacs London meetup held at University College London (UCL). A projector will be available, if anyone wants to give a presentation and/or if helpful to share Emacs tips, for some collaborative debugging, etc. We might head to a pub for a drink and/or a nibble afterward. Emacs users of all levels welcome! Interested in Emacs but not really a user? You're more than welcome too! **Call for presentations** Fancy talking about your favourite Emacs package? Proud of your latest Emacs Lisp hack and you want to tell everybody? Anything parenthesis-related that's bugging you? There'll be a monitor waiting for you for a short presentation!

A Rabble session is 1 hour of fun and social team games. Each game disguises high-intensity intervals within the rules, giving you an effective, all-body workout without even realising it. We play a bunch of different games at each session (like British Bulldog, Capture the Flag, Dodgeball, Frisbee and many more), and every class is different. Sessions are open to all, no matter your sporting ability. Each game is explained before we start, so there's no need to have played any of the games before. Come solo or bring friends! And stay at the end for the social part! Who knew getting fit could be this fun? **TO BOOK**: It's essential that you book onto sessions via our website, using the link below; due to restrictions on games and preparation times we cannot accept walk-ins, or late arrivals. [https://joinrabble.com/locations/london/](https://joinrabble.com/locations/london/) Use the code **FREEPLAY** to get your first game free! *** We play every: * Monday in Finsbury Park (19:00 - 20:00) * Tuesday in Shoreditch Park (19:00 - 20:00) * Wednesdays in Elephant & Castle (19:00-20:00) * Saturday in Southwark Park (10:30 - 11:30) * Saturday in Finsbury Park (11:00 - 12:00) * Sunday in Clapham Common (12:00 - 13:00) We hope to see you playing soon! PS. We have a group of dedicated regulars, so numbers are usually much higher than meetup might suggest. Sign up at: [https://joinrabble.com/locations/london/](https://joinrabble.com/locations/london/) **Love Rabble**

PLEASE NOTE YOU MUST book and pay for your ticket in advance at http://www.londonbuiltenvironment.com/ The London Built Environment committee would like to extend you an invitation to our May 2026 City Of London après-work Networking Reception to be held at the famous Gherkin - and hope you can join us for pre-work delicious breakfast and productive business networking to make new contacts and deals for the Rest Of The Year. We now have over 20,000 diverse and relevant London members so it’s the perfect opportunity for making new business connections. See photos from our latest events at http://www.londonbuiltenvironment.com/ PLEASE NOTE YOU MUST book and pay for your ticket in advance at http://www.londonbuiltenvironment.com/ ALSO PLEASE NOTE we take most of our event bookings through our website and EventBrite so the numbers booked is much larger than displayed on this Meetup page (normally about 70-100 guests).

The Square is a 2017 satirical black comedy film written and directed by Ruben Östlund. The film stars Claes Bang, Elisabeth Moss, Dominic West and Terry Notary. A Swedish production with co-production support from Germany, France and Denmark, it was shot in Gothenburg, Stockholm and Berlin. The story was partly inspired by an installation Östlund and producer Kalle Boman had made. Östlund was also inspired by a notorious incident involving Oleg Kulik and cast Notary in a parody, drawing on Notary's experience imitating apes. The film was entered into the 2017 Cannes Film Festival, where it received positive reviews and won the Palme d'Or. It was subsequently selected for the 2017 Toronto International Film Festival. It went on to win six European Film Awards, including Best Film; two Guldbagge Awards, including Best Director; and other honours. It was nominated for the Academy Award for Best Foreign Language Film at the 90th Academy Awards. Please note we will not be showing the film at the meeting. Make sure you watch the film before you attend and then come and join in with the conversation. It’s just a discussion. It’s not a screening. We will be meeting in The Ludski Bar in the Rio Cinema. [https://www.riocinema.org.uk/your-visit/](https://www.riocinema.org.uk/your-visit/) You are welcome to bring outside food in with you but please buy your drinks from inside the cinema. Thank you. ... To join the All Out of Bubblegum Film Club WhatsApp Group please click here: [https://chat.whatsapp.com/J2to1MBd4Ct7kQTFFVnyML](https://chat.whatsapp.com/J2to1MBd4Ct7kQTFFVnyML) (in order to stop spam bots this will take you to a Waiting Room. Once in please write your name and we will join you to the main chat). If the link doesn't work then please send me a message with your phone number and I can add you directly. Meetup charges subscription fees. If you would like to make a donation please click here: [https://paypal.me/philosophycollective](https://paypal.me/philosophycollective)

**BOOK HERE**: https://sportas.co.uk/games/45377 **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 🤝

🎉 Come along to the London Scala Talks! 🎉 In this event you'll hear from Caroline Morton and Katrina Petrevice. **Agenda** 6:00pm - 🥤 Doors open. Come along and grab a drink! 6:35pm - 🗣️ Introduction 6:40pm - 🗣️ Katrina Petrevice: Caching in Scala using Ref 7:20pm - 🍕 Intermission: Join us for some free food and drinks! Vegan and vegetarian options are provided. Let us know if you'd like something special - we'd be happy to accommodate. 7:50pm - 🗣️ Caroline Morton: Accidental Functional Programming in Rust (From an Epidemiologist's Perspective) 8:30pm - 🥤 Socialising: Grab a drink and let's discuss the talks. 9:00pm - 🍻 Join us in a pub to discuss the talks! 🌐 **This event may have a live stream** Watch this space for more details. **🗣️ Katrina Petrevice: Caching in Scala using Ref** Caching in memory is often one of the first strategies used to improve system performances. However, implementing caching in a purely functional way introduces unique challenges, specifically around state management and testability. In this talk, we will look at how to utilise functional programming principles with [Ref](https://typelevel.org/cats-effect/docs/std/ref), while maintaining clarity and composability. We will also deep dive into some common pitfalls and look into practical ways to test Ref effectively. ⭐ Katrina Petrevice ⭐ Katrina comes from a non–computer science background and was first introduced to Scala while working at JPMorgan. She credits much of her Scala knowledge to hands-on experience within her team, where she works on building and maintaining data pipelines and managing data systems. Since then, she has developed a strong interest in functional programming and now co-leads the Functional Programming Group at JPMorgan, where she helps share knowledge and foster a community around these ideas. **🗣️ Caroline Morton: Accidental Functional Programming in Rust (From an Epidemiologist's Perspective)** I don't have a background in functional programming - and I never set out to write it. But somewhere between writing trait-based epidemiological pipelines, composing data transformations, and leaning hard on Result, enums, and pattern matching, I started hearing from others: “That's pretty functional.” In this talk, I'll explore what it means to write “functional-ish” Rust as someone solving real-world scientific problems. I'll walk through the patterns I reach for - like chaining iterators, avoiding shared state, and embracing expressive types - and reflect on which functional programming ideas emerge naturally in Rust, even if you're not trying. I'll also share how designing for epidemiologists - most of whom are used to chaining functions in Python (like Pandas) or R - has pushed me toward creating ergonomic Rust APIs with Python and R bindings. These tools aim to feel familiar to scientists while leveraging Rust's power and safety under the hood. This is a talk for functional programmers curious about Rust, and for Rustaceans wondering if they've been functional all along. No formal theory required - just real code, real use cases, and a pragmatic perspective from someone building public health tools in Rust. ⭐ Caroline Morton ⭐ Dr. Caroline Morton is a medical doctor, epidemiologist, software engineer, and PhD candidate specialising in synthetic data, epidemiology, and Rust. With 60 peer-reviewed papers and two books on software, she combines deep technical expertise with a commitment to improving scientific workflows. Caroline co-founded the first [Women in Rust](https://www.meetup.com/women-in-rust/) group, fostering diversity and encouraging more women to explore opportunities in systems programming. She leads an open-source project improving codelist management in epidemiology using Rust, creating efficient, reliable tools for health data research. Her PhD focuses on synthetic data methods for epidemiology, particularly using Rust to generate large, realistic datasets. A strong advocate for open science and reproducibility, she contributes extensively to improving software practices through publications, workshops, and open-source projects. ———————————————————— 🗣️ Would you like to present, but are not sure how to start? Give a talk with us and you'll receive mentorship from a trained toastmaster! Get in touch through [this form](https://forms.gle/zv5i9eeto1BsnSwe8) and we'll get you started 🏡 Interested in hosting or supporting us? Please get in touch through [this form](https://forms.gle/3SX3Bm6zHqVodBaMA) and we can discuss how you can get involved. 📜 All London Scala User Group events operate under the [Scala Community Code of Conduct](https://www.scala-lang.org/conduct/). We encourage each of you to report the breach of the conduct, either anonymously through [this form](https://forms.gle/9PMMorUWgBnbk1mm6) or by contacting one of our team members. We guarantee privacy and confidentiality, as well as that we will take your report seriously and react quickly.

**The Unscented Transform: theory, extensions and practical application to Bayesian inference** We are delighted to have John Whitamore back at the Bayesian Mixer. Please register here: https://www.tickettailor.com/events/bayesianmixer/2154878 **Abstract:** How can we perform Bayesian inference without resorting to slow random sampling methods? Isn't there a nice, pragmatic way to use the geometry of a problem to use only a very small number of samples, placed deterministically? Isn't there a good, straightforward way to implement Bayesian models in practical settings? This talk explains the real-world problems that can be solved by the Unscented Transform. It begins with an intuitive introduction to Bayesian methods, discusses the Unscented Transform and connects the ideas to geometry, finite elements analysis and deep learning. **Bio:** John Whitamore is a Senior Data Scientist at Simply Business, a leading UK InsureTech firm. He has previously served as Head of Data Science for a leading food retailer, as Head of Trading and Systems for an investment management company and as Global Head of Convertible Bond Trading for a European investment bank.

**Hostess: Layla** \*This event is a collaboration with other groups and social networks and it will be well attended \*To attend this event you need to buy a ticket from [https://www.fatsoma.com/e/lsi5bu2u/speed-dating-22-39-and-party-in-soho-zebrano-complimentary-glass-of-prosecco-happy-hour-karaoke-access-and-djs](https://www.fatsoma.com/e/lsi5bu2u/speed-dating-22-39-and-party-in-soho-zebrano-complimentary-glass-of-prosecco-happy-hour-karaoke-access-and-djs) Age range: 22-39 ( as a general guide) Join us for a fun of speed dating and party in the heart of soho! Speak with 15-20 people of the opposite sex for 5 mins each then select who you like and leave with the contact details of some potential lovers! After the speed dating we stay for socialising and partying! The next day you will receive the contact details\* of your mutual matches (people you have selected and they have selected you back) at your e-mail! We don't send you to date in a online platform...We send you to date in real life with confidence! We run speed and slow dating events for more than a decade now and we are proud to say that they actually work! People that meet in our dating events date after, some make long term relationships, and some move together and we even had some marriages ! If this is your first time attending a speed dating there is nothing to worry about , we will be there to welcome you, put you at ease and explain you the process. Happy Hour till 8pm! Karaoke access after 11pm Complimentary Glass of Prosecco served after the speed dating in order to get you ready for the party The program of the night is 7:00-7:15 Registration 7:15pm-7:45pm First session of the Speed Dating 7:45pm-8:00pm Break-Socialising 8:00pm-8:45 pm Second session of Speed Dating 8:45pm Speed Dating finishes and Socialising starts- Complimentary glass of prosecco is served Dress code is smart/ elegant/ Smart Casual (smart dark jeans are fine but ripped jeans, sportswear, trainers/sportshoes and hats are not allowed). Zebrano Soho is a vibrant cocktail bar, restaurant, and nightclub in the beating heart of London’s most iconic entertainment district. Zebrano is more than just a venue – it’s a celebration of fun, flavour, and feel-good vibes. It offers amazing cocktails , great cuisine, multiple rooms and an outdoor rooftop terrace At Zebrano, we serve up delicious food, killer cocktails, and the best tunes in town – all in a space designed to make great nights unforgettable. Come for the vibe. Stay for the party. Leave with a story. For security reasons every guest must carry photographic ID with them (Driver’s License, European ID or Passport) independently of the age. Tickets are valid for entry till 11pm How to find us: Just come inside and ask for Marianna's Speed Dating / Layla. Any issue on the night feel free to call Layla: 07377544606 For general inquires or difficulties with your ticket booking feel free to e-mail us at benetoupromotions@gmail.com or call Marianna on: 07949526733 \* By participating to the event you agree to have your details that you submitted to us passed to your mutual matches ( people that you will select on the form that will be given to you during the event and they will select you back). \*Our company is registered with ICO. so you contact details are safe with us Please Note: -Tickets need to be bought online and are not available at the door -Dress code: Elegant/Smart/Office Attire/Smart Casual ( Smart jeans are alright but ripped jeans, t-shirts, hoodies, sportwear, sportshoes or trainers are not allowed) -A valid proof of ID (Passport, Driving License, or National ID) is required upon arrival independently of the age for security reasons

Join us at SalsaTrain for a fun-filled evening of dancing and learning the art of salsa, suitable for all levels! SalsaTrain is in its 5th year now. All aboard! The SalsaTrain every Weds @ the Selhurst Railway Club in South London right by Selhurst Train station. Salsa classes every Weds night from 6.30-11pm. The classes are fun & interactive with Dominic Insta(Salsa_Legend) with over 20 years salsa experience, and Trish with 10 years teaching experience. Dominic's style is Predominately L.A. on 1/ cuban fusion. He was placed 1st in the Tropicana Tropics World Open Salsa Championship (Ama Division) 2003, has performed with a team of dancers at the 2005 UK salsa congress and placed as runner up in the European Open Salsa Championships (Cab 2007). He has also performed at the Scandinavian Salsa Congress 2009 in Sweden; as part of a team at one of the New York Salsa Congresses and instructed for many salsa promoters within the UK and Internationally. During lockdown, Dom launched his weekly music show "Sundown Salsa Live" on Mixcloud and has played regularly on OSSR radio every Friday 10am-12pm. Trish teaches the beginner class and has had experience teaching with another Salsa Group. All lessons (45 mins long) include party. No partner necessary. Free stop - 6.30-7pm Bachata Time (Music and Dance for 30 mins). There will be Bachata Tasters - (Beginners steps - 30 mins - Subject to change). 1st stop - 7-7.45pm Beginners & Improvers 2nd stop - 8-8.45pm Improvers plus level 3rd stop - 9-11pm - PartyTrain Social dancing Homeward Bound 11pm £10 for 1 class, £12.50 for 2 classes, £5 for party only. Early bird tickets for beginners Salsa class only for £8.50 & for 2 classes including party train for £10.00 inc Eventbrite fee available until 6.30pm each Tuesday - 24 hours before SalsaTrain. Boarding from 6.30pm. Get your tickets via [www.latindianevents.com](http://%5Bhttp://www.latindianevents.com%5D(http://www.latindianevents.com) "\[http://www.latindianevents.com\](http://www.latindianevents.com)") which leads to the following eventbrite link - [[https://salsa-train-selhurst.eventbrite.co.uk/](https://salsa-train-selhurst.eventbrite.co.uk/)]([https://eur02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fsalsa-train-selhurst.eventbrite.co.uk%2F&data=05%7C02%7CA.Kapadia%40mdx.ac.uk%7Cfdc1b99d8569432c544008de4ebfb677%7C38e37b88a3a148cf9f056537427fed24%7C0%7C0%7C639034782480290305%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=bK7omfXlIt1Thr9F%2BZ4ZzCfdEWF9B27DChx7%2FsEcOIU%3D&reserved=0](https://eur02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fsalsa-train-selhurst.eventbrite.co.uk%2F&data=05%7C02%7CA.Kapadia%40mdx.ac.uk%7Cfdc1b99d8569432c544008de4ebfb677%7C38e37b88a3a148cf9f056537427fed24%7C0%7C0%7C639034782480290305%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=bK7omfXlIt1Thr9F%2BZ4ZzCfdEWF9B27DChx7%2FsEcOIU%3D&reserved=0) "[https://eur02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fsalsa-train-selhurst.eventbrite.co.uk%2F&data=05%7C02%7CA.Kapadia%40mdx.ac.uk%7Cfdc1b99d8569432c544008de4ebfb677%7C38e37b88a3a148cf9f056537427fed24%7C0%7C0%7C639034782480290305%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=bK7omfXlIt1Thr9F%2BZ4ZzCfdEWF9B27DChx7%2FsEcOIU%3D&reserved=0](https://eur02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fsalsa-train-selhurst.eventbrite.co.uk%2F&data=05%7C02%7CA.Kapadia%40mdx.ac.uk%7Cfdc1b99d8569432c544008de4ebfb677%7C38e37b88a3a148cf9f056537427fed24%7C0%7C0%7C639034782480290305%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=bK7omfXlIt1Thr9F%2BZ4ZzCfdEWF9B27DChx7%2FsEcOIU%3D&reserved=0)") (WE ALSO ACCEPT PAYMENT BY CARD ON THE NIGHT) You will be refunded or have your ticket transferred to another night providing you inform either of the contacts below by 7pm on the day you are coming. More info please contact Abs 07507634241 or Dom 07939587944 Venue details and information. Selhurst Railway Club is a stones throw from Selhurst train station - well connected by London Victoria, Clapham Junction and East Croydon. Upon arrival please press the buzzer and wait to be let in. You will need to show your pre paid ticket on your phone & asked to give your details to the club management. You will then be escorted into the room to board the SalsaTrain. The venue has a fully stocked bar at extremely reasonable prices & crisps, nuts. It is a very spacious venue and has a very comfortable feel with great wooden floor for dancing. All aboard!!!!

MCP is changing how developers build with AI, but we're just scratching the surface. Join us for an evening of talks that go beyond retrieval to explore what's actually possible when you give agents real tools, real constraints and real APIs. **Agenda** ​6:00 PM - Doors open, registration and networking ​6:10 PM - Welcome (Upsun & Cloudflare) ​6:20 PM - MCP: Context is Everything! - Carly Richmond, Elastic ​6:45 PM - Sandboxes: how to limit agents so we can use them more - Patrick Dawkins, Upsun ​7:00 PM - Break (Food & Drinks) ​7:30 PM - Cooking with MCP in VS Code - Liam Hampton, Microsoft ​7:55 PM - Efficient tools with MCP code mode - Confidence Okoghenun, Cloudflare ​8:15 PM - Open networking and drinks ​9:00 PM - Close 🗣️ ​**Talks** ​**MCP: Context is Everything! - Carly Richmond (Developer Advocate Lead, Elastic)** ​MCP is a powerful tool for giving LLMs capabilities to not just retrieve information, but to automate key actions based on relevant data. Let’s see how it can be used for retrieving relevant context and other activities such as observability. ​**Efficient tools with MCP code mode - Confidence Okoghenun (Senior Developer Advocate, Cloudflare)** ​Traditional MCP approaches choke on context windows: Cloudflare's 2,500+ endpoint API would require 1.17 million tokens. Code Mode flips the script by having LLMs write code against typed APIs instead of making direct tool calls, achieving 99.9% token reduction. Come learn how code mode works and how to optimize your MCP tools with it. ​**Sandboxes: how to limit agents so we can use them more - Patrick Dawkins (Principal Engineer, Upsun)** ​We want our agents to run longer and use more tools, but we're hampered by constant prompts for approval. Sandboxes are the practical middle ground: isolate the agent so you can stop watching every command and let it work. This talk covers what "sandbox" means, who provides them today and the Linux primitives that let you build one yourself. ​**Cooking with MCP in VS Code - Liam Hampton (Senior Cloud Advocate, Microsoft)** ​In this session Liam will show you how VS Code is fully supporting the MCP spec, from MCP Apps to sandboxing and elicitations. 📅 **Date and Time:** Thursday, May 14, from 6:00-9:00 PM 📍 **Location:** Cloudflare Address: 6th Floor, County Hall/The, Riverside Building, Belvedere Rd, London SE1 7PB, UK 👉 You can also register here: https://luma.com/eb8j6lhu **⚡️ Interested in giving a talk? ⚡️** Have you ever considered presenting on your Elastic use case? We welcome 5-10 minute lightning talks, 45-minute deep dives, and everything in between. If you're interested, please submit via our [CFP](https://sessionize.com/elastic-meetups/) or send us an email at [meetups@elastic.co.](http://meetups@elastic.co./)

✨🎊 Welcome to DSF Big Birthday Bash 🎊✨ THE TICKET BALLOT IS NOW OPEN! Click the link below to enter the ballot 👇 [Click here!!!](https://datasciencefestival.com/event/big-birthday-bash-2026/?utm_source=social&utm_medium=meetup&utm_campaign=bigbdaybash) Join us on Saturday 16th May 2026, for our 12th Festival, at our London home CodeNode, celebrating DSF turning 10, for one day only! Enter the ticket ballot to be in with a chance of attending. 600 lucky people will get to attend this event for free 🎟️ 40 speakers, 4 stream rooms, 14 partners, lunch, swag bags, and an entire day to learn, mingle, and be inspired! Event time: 08:15 AM - 18:00 PM Venue address: CodeNode, 10 South Pl, London, EC2M 7EB Nearest tube station: Moorgate or Liverpool Street Schedule and speaker details are updated weekly [here.](https://datasciencefestival.com/event/big-birthday-bash-2026/?utm_source=social&utm_medium=meetup&utm_campaign=bigbdaybash) Please note this event will not be streamed, so please ensure you apply for a ballot ticket to watch these sessions live. **PLEASE NOTE: CLICKING ATTENDING ON MEETUP DOES NOT GIVE YOU ACCESS TO THIS EVENT. PLEASE FOLLOW THE LINK ABOVE OR BELOW TO REGISTER FOR TICKETS**. Ticketing: Due to the popularity of Data Science Festival events, we are now allocating event tickets via a random ballot. Registering enters you into the ticket ballot for DSF Big Birthday Bash on Saturday 16th May 2026. The ballot will be drawn throughout the month of April 2026. If you have not received a ticket by May 7th 2026, unfortunately, you have been unsuccessful in getting a ticket. Those who are randomly selected will then be e-mailed tickets for the event. Please read how the ticketing works in full here. ([[https://datasciencefestival.com/2024/01/01/dsf-tickets-101-mayday-2024/](https://datasciencefestival.com/2024/01/01/dsf-tickets-101-mayday-2024/)]([https://datasciencefestival.com/2024/01/01/dsf-tickets-101-mayday-2024/](https://datasciencefestival.com/2024/01/01/dsf-tickets-101-mayday-2024/))) Event details: 🎟️ Please bring your ticket (a paper copy or on your phone) to the event to check in with your QR code. Tickets are non-transferable. Arrive before 10:00 AM for guaranteed entry. ☕️ There is no breakfast at the venue, however, there is tea, coffee, and water provided throughout the day. Lunch is also provided. Soft drinks and alcohol can be purchased from SpaceBar at Code Node. ⌚️ Doors will open at 8:15 AM sharp and attendee registration will begin at this time on Saturday 16th May 2026. Speaker sessions begin at 9:00 AM, but please arrive at least 45 minutes before the conference begins, to make sure you enter the event on time. Arrive before 10:00 AM for guaranteed entry. 📛 Please pick up your badge, schedule and SWAG bag at the registration table on the ground floor. 🤝 There will be networking at the Spacebar from 17:00 - 18:00 PM so come and say hello! FAQ will be live in April 2026. Please take some time to review this ahead of the event. Check out last year's DSF Game On here: [https://datasciencefestival.com/event/game-on-2025/](https://datasciencefestival.com/event/game-on-2025/) We can't wait to see you back in person! 👋 **#DSFBigBirthdayBash**

Register: [https://luma.com/hack-night-tessl-may13-2026?utm_source=neo4j](https://luma.com/hack-night-tessl-may13-2026?utm_source=neo4j) ## What's Hack Night? ​Five hours. One room full of builders. Zero fluff. As many demos as we can. ​Hack Night at Tessl is a London evening for people who would rather build than posture. You show up with an idea, find a team if you want one, spend a few focused hours shipping with a DJ in the background, and demo what you made before the night ends. Then we head to the pub. ​**When**: May 13\, 2026 \| 4:00 PM \- 8:45 PM BST **Where**: Tessl office, London ## Here's How It Works ​**4:00 PM - Doors Open** Check in, grab food, meet other builders, form groups, (or solo hack if you want) and decide what you're making. ​**4:30 PM - Opening Context** Quick welcome from the host and venue partner so everyone knows the flow for the night. ​**5:00 PM - Short Technical Remarks** If there are host or sponsor remarks, they stay short. The point is to get useful context, then get people building. ​**5:30 PM - Build Time** Heads down. Music on. Ship something. Use the time to test an idea, explore a tool, or finally build the thing you've been sitting on. ​**7:30 PM - Demo Time** Show what you made. Get feedback. See what everyone else shipped. ​**8:45 PM - Wrap Up** Final demos, shout-outs, and a clean finish to the night. And of course, Pub! We're heading to a pub nearby for a pint and a proper debrief. Come if you want to keep the conversation going.

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/

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

**We'll have two meetings covering AI - this second one is for Positron** We will review which AI features are linked in for Positron, and how to use them. **Source documents:** the repository is public, at: https://github.com/BarryDeCicco/AARUG_2026_04_09_AI_In_Positron You can download documents, or clone/fork the repository. **Location:** The meetup will be at SPARK's ([https://annarborusa.org/](https://annarborusa.org/)) Ann Arbor site: [SPARK HQ (Ann Arbor)](https://urldefense.com/v3/__https://www.google.com/maps/place/Ann*Arbor*SPARK*Headquarters/@42.2792515,-83.7447708,17z/data=!3m1!4b1!4m5!3m4!1s0x883cae3effe193cb:0x5296a53db2a282bf!8m2!3d42.2792515!4d-83.7447708?hl=en-US__;Kysr!!HXCxUKc!3EEdBNXRJKknP6LCGkZetSuEsdtChFojQnOVitFUC5C0fyilqXEbiMstT9ajBR3Cw-55qoFkrElCjQvjMdTxUw$). There is on street parking, and parking at local structures. **This will be a hybrid meeting - the Zoom session starts at 6:30 PM.** **Time:** The doors will be open at 6:00, with pizza and beverages provided. We will have a meet-and-greet-and-pizza session, and then at 6:30 we'll have a presentation. **Zoom information:** https://us06web.zoom.us/j/6658850479?pwd=Snd1UmZTT3pjZktENlczUXh4SERwUT09&omn=89012971377 Passcode: 940392 **If you can't get in, please call me at: 734 223-3307** **The github repository is at: https://github.com/BarryDeCicco/AARUG_2026_04_09_AI_In_Positron**

Practical AI for Power BI Developers A year ago, “agentic AI” was mostly hype for Power BI teams. Today, it deserves your undivided attention. For Power BI pros, there is now a real opportunity to reduce repetitive development work, accelerate delivery, and help developers do more, but only when strong DataOps practices are in place to make AI workflows effective. This session is a no-nonsense introduction to effective AI patterns for Power BI and Fabric development. Along the way, we will make sense of the growing pile of terminology, including skills, plugins, hooks, and MCP. You will see examples of how modern AI tooling can help with development tasks across Power BI and Fabric, along with the prerequisites, guardrails, and DataOps principles needed to use it responsibly. Whether you're burned out on AI hype or already using Copilot CLI daily, this session will show you the foundations that are finally making AI-assisted development genuinely useful.

**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 John Lairson will share a notebook describing the Alpaca (Paper) Trading API and discuss different algorithms for evaluating stock trades. 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

Columbus Code & Coffee is an inclusive, informal co-working session. People of all skill levels attend, and we love it that way. Many people (optionally) bring projects to work on, and many other people (optionally) socialize the entire time. It's entirely up to you! **What to Expect at the Intro Circle** \~\~\~\~\~\~\~\~\~\~\~\~\~ Near the beginning of the event (1:30 pm), we do a standup: * Organizer announcements, updates, and logistics Round 1 - (7 secs max): * Your name * What you're working on * What you can help others with Round 2: * Community events you wanna plug. If none, that's cool too. Round 3: * Job opportunities you're hiring for OR announce that you are looking for one. If none, that's cool. After the introduction circle, everything is self-organized! Feel free to work alone, pair up, attend one of our workshops/presentations, or mingle!

**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** TBD **YouTube Link** TBD