Programming in R

Join fellow developers for a fun evening watching Apple’s announcements in their WWDC 2026 keynote, kindly hosted by NewDay. The stream starts at 18:00 and usually runs for about 2 hours. Food and drinks will be available. Please have app/email confirmation ready at reception. Code of Conduct: [https://nslondon.com/coc](https://nslondon.com/coc)

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? **HOW 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**

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!

Welcome to SQUAD Advanced Volleyball sessions. PLEASE READ: Level: Advanced/Upper Intermediate only. (Players MUST know the 5-1 rotation system and positions and have strong all-round skills) We meet at Bacon's College Sports Centre in Canada Water for fun but competitive volleyball! Cost: £ 12 per session Maximum Capacity: 14 players. Attitude: Positive and friendly atmosphere Please NOTE: you might be asked to leave the session if your level isn't up to the standard of ADVANCED Book your place ASAP and any question please contact us here or via our Facebook page. https://www.facebook.com/S.Q.U.A.D.VC/

Join me for a fun Drama class every Monday evening from 6:30 pm- 8:30pm at the Omnibus Theatre in Clapham Common. The class helps with confidence, developing awareness of yourself and others, connecting and to simply having fun. No experience is needed. We'll do relaxation exercises, games, improvisations, storytelling, and a bit later on we'll start working on character and text. There will be a little showcase at the end of the year. £10 pounds for the trial class to be paid before or after class. Different payment options if you decide to join. In order to reserve a place, please contact me at catherine@thebrightdaycompany.net. For more info: https://www.thebrightdaycompany.net/about I look forward to seeing you!

\#\#\#\# Step 1: TAKE THE TEST The Oxford Capacity Analysis identifies 10 vital personality traits that influence your entire future. It is a factual, scientific analysis taken from your answers, and it takes about an hour to complete. \#\#\#\# Step 2: GET YOUR RESULTS After you complete the test, your personality analysis is generated and displayed. Within minutes your analysis will highlight your strengths and weaknesses—which personality traits to take advantage of and which need help. \#\#\#\# Step 3: CONSULTATION While the analysis graph shows distinct personality traits, it is the interrelationship of these traits that provides the greater picture of your personality. We provide a complimentary consultation with one of our trained staff, who will give a detailed evaluation of your personality analysis. In this one-on-one consultation, you gain a better understanding of your personality strengths and weaknesses, and establish the recommended path to your fast and lasting success.

👋🏽 Decks In Session 🎧🔥 Live DJ sets all night! Amapiano, Afrobeats, Dancehall, Soca, Hip Hop, R&B, House & GQOM. No breaks, straight energy. 📍 North Pole Bar & Grill, Greenwich 📅 Sat 13th June · 9:30PM – 2:30AM 🔞 21+ Plus a £100 raffle on the night 💰 & we're filming, so come with the energy See you there 💃🏽🕺🏽 https://www.eventbrite.com/e/decks-in-session-tickets-1987345907106

Unless otherwise announced this is an in-person social gathering for Smalltalkers to get together and talk about Smalltalk (the Programming Language!). Everyone is welcome from the grizzled and experienced to the merely curious.

🎉 Come along to the London Scala Talks for a deep dive into functional architecture! 🎉 In this event you'll hear from David Lebl and Przemysław Pokrywka. **Agenda** 6:00pm - 🥤 Doors open. Come along and grab a drink! 6:35pm - 🗣️ Introduction 6:40pm - 🗣️ Przemysław Pokrywka: Ports and Adapters for People on Tight Schedules 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 - 🗣️ David Lebl: Complexity is a Sin, But Hexagons Forgive 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 will not have a live stream** We hope to see you there in person. **🗣️ Przemysław Pokrywka: Ports and Adapters for People on Tight Schedules** Focus on software architecture is not always associated with pragmatism in common perception. Terms such as architecture astronautics and the ivory tower stereotype highlight the perceived disconnect between many architects and the realities of day-to-day code maintenance. Too often, architectural patterns are applied with insufficient understanding, leading to cargo-cult adoption and increased waste in the software development process. When applied in the right context, however, certain architectural approaches can be powerful enablers. In this talk, I would like to share the story of a serverless application in which elements of the Ports and Adapters architecture made a tangible, positive difference. ⭐ Przemysław Pokrywka ⭐ Husband, dad, grandad, software engineer. Functional Scala enthusiast with imperative OOP Java background. Fan of the command line. **🗣️ David Lebl: Complexity is a Sin, But Hexagons Forgive** A visual journey from spaghetti to sanity. This talk traces how cognitive load accumulates in unconstrained codebases, how domain-driven design and bounded contexts restore order, and how hexagonal architecture provides a practical, forgiving structure for real-world systems — all laid out on a single zoomable canvas where every example links back to the bigger picture. ⭐ David Lebl ⭐ David is a software developer with a CS background and 5 years of Scala and FP experience. He leads a small team, occasionally survives his own accidental complexity, and is here to share what he learned the hard way. ———————————————————— 🗣️ 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.

We're back with our third event of the year and we couldn't be more excited. We'll stick to our usual format of 2 speakers and a fireside chat (with a twist this time). If you've not been to one of our events before then here is what you can expect. CRAP (Conversion Rate Optimisation, Analytics, Product) Talks is a cross-discipline event. We don't work in silos so why network and learn in silos. In the past we've had speakers from Data, Analytics, CRO, Product, Marketing, Data Science, Design and Research and so many more. If you work in tech, chances are you work cross-functionally, so come along and meet people doing amazing things in tech. **Hosts:** RVU - https://www.rvu.co.uk/ **Venue:** RVU The Cooperage, 5 Copper Row, London SE1 2LH **Date:** 09/06/2026 6pm doors open Talks kick off at 630 Wrap up approximately 9:00pm. **Speakers:** * **[Aya Gaballa](https://www.linkedin.com/in/aya-gab/)** \- "Building Products for Different Cultures" * Co-Founder & Product Lead, Kham Lab * **[Mark Palfreeman](https://www.linkedin.com/in/mark-palfreeman-662044160/)** \- "Gambling with Success: The Complexities Around Measurement in an Industry with Stellar Growth"\. * Senior Business Intelligence Manager, Flutter UKI **Fireside Chat:** * **[Alex Homan](https://www.linkedin.com/in/alexander-homan-3aab2a141/)** \- "Analytics in the age of AI" * Lead Data Analyst, Huel

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!!!!

June Edition ✨✨! We will be at the MongoDB London office! Django London Meetup is a monthly meeting to discuss Django, Python, the web, and related topics. The meetups are open to all with an interest in building websites with Django. (in-person only event, no streaming) **Talks:** **AI Agents Need Memory Too: Building Systems That Remember What Matters — Abigail Afi Gbadago** AI agents are only as good as what they can remember, but deciding what to store, where to persist it, and how to retrieve it at the right moment is harder than it sounds. This talk walks through a practical framework for architecting memory systems for agentic applications, covering memory types, storage patterns, retrieval strategies using vector search, and managing the full memory lifecycle in production. Afi is a Senior Software Engineer and Developer Advocate (MongoDB). She serves as Vice President of the Django Software Foundation, a Fellow of the Python Software Foundation, and is a Microsoft MVP for Python and Web. Afi is passionate about building great software and stronger tech communities. \-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\- **Replay Failed Python Runs: Reverse Debugging When Logs Aren’t Enough** **\- Nathan Matthews** Reproducing Python failures from a traceback alone is often impossible once the request is gone or the environment has changed. This talk introduces Retrace, an open-source reverse debugger that lets you record, replay, and step backwards through a failing run, giving both developers and AI agents concrete evidence for debugging. Nathan Matthews is Co-founder and CTO of Retrace Software. He has spent his career building complex Python and distributed systems across fintech, developer tools, and data platforms, including roles at 10x Future Technologies, Digital Asset, Elsevier, and Droit. At Retrace, Nathan leads the technical work behind deterministic replay and reverse debugging for CPython. **Want to share your Django or Python knowledge?** We’d love to feature your talk! Just fill out our [Speaker form](https://tinyurl.com/django-london-speaker-form) to propose a talk! **Agenda:** • 6:15pm Doors open, socialising • 6:30pm Food and drinks offered by our sponsor • 7:00pm Doors close • 7:15pm Introduction, Talks • 8:30pm Socialising • 9:30pm Fin **Please make sure to arrive between 6:15 PM and 6:55 PM**. If you arrive earlier than 6:15 PM or later than 6:55 PM, you can take a seat in the seating area located in the downstairs reception. **Please note that we cannot accommodate arrivals after 7:15 PM.** Our meetups are governed by a [Code of Conduct](https://www.djangolondon.com/code-of-conduct/). Please take a few minutes to read it. This meetup is sponsored by: • [MongoDB](https://www.mongodb.com/): “MongoDB is a database for dynamic, demanding software.” • [Kraken Tech (Octopus Energy Group)](Octopus%20Energy%20Group): "Kraken is a revolutionary energy tech platform built with predominantly Python & Django. We serve 54 million households worldwide and have 38GW of contracted capacity." • [JetBrains](https://www.jetbrains.com/): "We make professional software development a more productive and enjoyable experience." Website: [https://djangolondon.com](https://djangolondon.com/) BlueSky: [https://bsky.app/profile/djangolondon.com](https://bsky.app/profile/djangolondon.com) Github: [github.com/djangolondon](https://github.com/djangolondon/) Open Collective: [opencollective.com/the-london-django-meetup-group](https://opencollective.com/the-london-django-meetup-group/)

We are excited to host our coding dojo with Spektrix! We'll kick off with an introduction to TDD, its core principles, and following disciplined emergent design. Through hands-on pairing and mob programming, you'll experience how writing tests first doesn't just catch bugs, it shapes cleaner, more intentional code from the ground up. **What about AI tooling?** We encourage the use of AI tooling! We will briefly walk through how such tooling can act as multiplier, not to shortcut the discipline of TDD. **Don't have AI tooling?** No problem. TDD is a discipline that stands on its own, with or without AI. But if it's something you'd like to try, we can pair you with somebody who has the tools set up. Join us for an evening of coding, food and drinks. Come and code along, share ideas, discuss best practices with Test Driven Development and learn from our expert Crafters and your peers in the London Software Craftsmanship community. **What’s the format?** After a short intro, we’ll get into groups/pairs or work solo, whatever people feel most comfortable with, and start building. You choose how you want to work and what language you want to code in. This session is about collaborating with others, becoming a better developer and building your network, in a fun, relaxed environment. We'll be sharing ideas, discussing best practices and using this as an opportunity to learn from our fellow coders. All levels of experience very welcome, if you want to brush up on your Test Driven Development skills or are a complete novice, do come along. All welcome! All you need to do is bring a laptop if you’d like to code along - please have your preferred language and editor setup. **Food and Drinks** Pizza and drinks will be provided upon arrival

We have moved to guild.host. Look us up there. https://guild.host/events/buckeye-cocoaheads-rcavwd

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

**Important time note:** Please plan on arriving between 5:30 and 6:00 as the elevators lock after 6 and you'll need to message us and we'll need to come get you. The building address is 4450 Bridge Park The entrance is 6620 Mooney St, Suite 400 You will need to scan your ID at the door to get a visitor badge. **Abstract** *Customize the IDE: Building Extensions for Visual Studio Code* Visual Studio Code is one of the most widely used development environments today, and much of its flexibility comes from its extension ecosystem. Extensions allow developers to customize the editor with new features, integrations, and workflow improvements tailored to their needs. In this session, we’ll cover what extensions are and the different types available, including full extensions written in TypeScript or JavaScript, along with lighter-weight extensions such as color themes, language packs, language support, code snippets, and keymaps. We’ll also look at practical reasons a developer might create an extension, from automating repetitive tasks to adding custom tooling. The session includes a hands-on walkthrough of creating a new extension, testing it locally, and understanding the basic project structure. We’ll close with a brief overview of how extensions are packaged and published to the Visual Studio Marketplace and other distribution options. **YouTube Link** TBD

We are bringing Microsoft Build sessions to Columbus Ohio! The Central Ohio Azure Meetup and Central Ohio .NET Developer's Group (CONDG) are coming together to bring some of the labs and breakouts from Microsoft Build to your backyard. In this free, 1 day event, you are going to Build stuff with us! And yes, there will be free food. So please RSVP for a head count!

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!

Christians in Tech is a community at the intersection of faith and technology. Our meetups are designed to spark meaningful conversations, promote knowledge sharing, and encourage growth—both in your career and your spiritual walk with God. Whether you're an experienced professional or just starting your tech journey, CIT welcomes you. Our Website [https://linktr.ee/citcbus](https://linktr.ee/citcbus) Sponsors and Partners * Improving (Venue Sponsor) * Bethel World Prayer Center (Fiscal Sponsor) * Fruits & Roots (Coffee Partner)

Topic to be announced. **THANK YOU** *Franklin University* for hosting our meetup! To learn more about *Franklin University*, please visit their website: https://www.franklin.edu/ **DIRECTIONS** Franklin University Fisher Hall 300 E. Main St, Columbus, OH 43215 Map: https://maps.app.goo.gl/jxjBA2hUmS5qrvhq8 Parking is FREE! Please park in Lot C in front of Fisher Hall. See attached map. NOTE: Map the address only. When mapping with Google Maps it may use the Fisher Hall at OSU, which is NOT correct. **Want to sponsor the pizza and/or bar tab?** Please contact me if you would like to sponsor this meetup's pizza and/or bar tab: angelo@mandato.com