Functional and Regression Testing

This month we have a visiting speaker from think-cell, Sebastian Theophil, who will talk to us about error handling in C++26 (with sprinkles of C++23). We also have space for a shorter talk, or lightning talks. If you would like to speak - even for just five minutes, please drop something into cppldn.uk/speak. **think-cell** will also be supporting the group by providing pizza and drinks - thanks **think-cell**! Thanks, also, to **Maven Securities** for hosting us again, this month. **As usual we'll need your full name for the door list, so we'll be asking for this on registration** (as this may be different to your username). This data will only be used for the door list/ registration and not published anywhere or used for other purposes. If you'd like to speak at a future event please get in touch at [cppldn.uk/speak](http://cppldn.uk/speak). **Here's the approximate schedule:** **18:30** *Doors open* **19:00** "Intro and news" - *Phil Nash* **19:10** *"compile_assert - Compile time C++ assertions" - Jonathan Grant* I present compile_assert(expression, message), a new C++ keyword proposal for enforcing assertions at compile time within ordinary (non-constexpr) functions. compile_assert provides advanced asserts at compile time, not runtime. Used for bounds checking, parameter validation and data validation at compile time. All three major compilers (GCC, Clang, MSVC) are supported with a sample implementation. The example implementation does this by using GCC’s attribute error which works with Clang. **19:25** "Compile-Time Data Layout Transformation with C++26 Reflection" - *Arturs Kalnins* We’ll use C++26 static reflection and injection to convert an AoS into a SoA at compile time, live on the latest GCC, with zero macros and zero boilerplate. **19:40** *break* **20:00** "To Err is Human: Robust Error Handling in C++26" - *Sebastian Theophil* A walk through the new error handling features in C++26 — including \`std::expected\`, \`std::stacktrace\`, contracts, and more — and how they can help us write more robust, maintainable code. **21:00** *Conclusion, and moving on somewhere else* \-\-\- **About the speakers** *Sebastian* has been working at think-cell since it was founded in 2002. In the last few years, among many other things, he has ported think-cell to run on macOS. He also maintains the typescripten project, which lets programmers call JavaScript libraries from C++ code compiled to WebAssembly in a convenient and type-safe way. He enjoys leaving his desk from time to time to talk at international C++ conferences. *Jonathan* has been a Software Engineer since 2003, worked in the video games industry and also embedded space for a long time at Renesas in safety critical systems for the automotive sector in C and C++. He also develops bespoke machine learning software in C++. He has a BSc Computer Science and an MSc Software Engineering. *Arturs* is a C++ software engineer with a background in aerospace engineering, where he developed a strong foundation in mathematics and systems thinking. He builds reliable, high-performance systems across embedded software, networking, and distributed platforms, with a particular focus on modern C++ (23/26), Rust, and performance-critical design. He enjoys tackling complex engineering challenges, designing clean abstractions, and contributing to the standards and practices that help teams deliver robust systems effectively.

\#\# Get Ready for **SalsaTrain's Clapham Junction Launch**! New Years Resolution? Join us in person for an awesome evening of rhythm and fun. Whether you're new or just wanna brush up, our **Beginners Bachata/Salsa Classes** are perfect to get you moving and grooving. Come dance, meet cool people, and experience the vibrant vibes of SalsaTrain Schedule for the classes: Doors open 7.30pm Bachata for Beginners 7.30-8.15pm Salsa cross body style for Beginners 8.30-9.15pm Dance practice 9.15-10pm when doors close. Cost of classes inc practice - £10 for one class, £12.50 for two classes. Pre purchase preferred via [www.latindianevents.com](http://www.latindianevents.com) or direct link - [https://salsa-train-clapham.eventbrite.co.uk](http://%5Bhttps://salsa-train-clapham.eventbrite.co.uk%5D(https://salsa-train-clapham.eventbrite.co.uk) "\[https://salsa-train-clapham.eventbrite.co.uk\](https://salsa-train-clapham.eventbrite.co.uk)") No partner necessary as we dance on rotation. More info on the venue can be seen here - [https://cjchurchofthenazarene.org/](https://cjchurchofthenazarene.org/) More info on the SalsaTrain team - The SalsaTrain has been running for over 4 years now each Wednesday night in Selhurst and has recently launched a Bachata Line focussing mostly on Bachata dance originating from the Dominican Republic, each Sunday in Wimbledon. Teachers have over 20 years experience between them. right here in Clapham Junction. Don’t miss out on the fun!

*📌Abstract* Vibe coding captures something real: momentum. The ability to move from an idea to a working prototype at surprising speed, guided by intent, context, and AI assistance. But in an enterprise environment, speed alone isn’t enough — software must also be secure, compliant, observable, and built to last. We'll see how teams can build applications in a single, end-to-end development flow — from business requirements and early prototypes to engineering, testing, delivery, and production — without breaking context or introducing late-stage rework. At the center of this flow is the software catalog: a living system of record that connects services, APIs, data, ownership, dependencies, and standards. More than documentation, the catalog becomes the shared interface for developers, platform teams, and AI agents to understand the system and act consistently, within enterprise rules and guardrails. The goal isn’t to limit creativity, but to make flow sustainable — turning AI-driven momentum into software that’s ready for production. 🔍 *Key topics* • From vibe-coding to ai-assisted delivery in production • Software catalog as the system of record for enterprise context • AI agents operating in context continuity within guardrails ⏲️ *Agenda* 18.30\* Welcoming 18.45 Talk 19:30 Q&A 19:45 Closing remarks & Networking and Pizzas! 🍕 See you at the next Meetup! \*To access the venue, a staff member will be at the building's front entrance. The venue is on the first floor. 🎙️*Speaker* Giulio Roggero CTO @ Mia-Platform 25 years of experience in software engineering, serial entrepreneur with more than 10 business initiatives launched, today is co-founder and CTO at Mia-Platform, the Internal Developer Platform named by Gartner Cool Vendor for Software Engineering Technologies and in the Cloud Application Platforms Magic Quadrant. Principal focus: cloud native, platform engineering, data fabric and omnichannel experience. He likes to paint Blood Bowl miniatures, construct Lego, build and drive RC Cars and learn piano.

**This is a ticketed event for £10, purchases available at [eventbrite here](https://www.eventbrite.co.uk/e/philosophies-of-east-west-first-evening-tickets-1982072570414?aff=oddtdtcreator&_gl=1%2A1ynpvct%2A_up%2AMQ..%2A_ga%2AOTQxMTAzNjU3LjE3Njk3ODM4NTk.%2A_ga_TQVES5V6SH%2AczE3Njk4NzEwNzckbzMkZzEkdDE3Njk4NzE5NTMkajQ5JGwwJGgw).** Philosophy means the love of wisdom, and being a philosopher essentially means having an active attitude and awareness towards life. We are all born philosophers, with a natural need to ask questions and with the intuition that there are answers to be found. Every civilisation has tried to pass on its wisdom, leaving us a vast heritage of useful knowledge and experiences to rediscover. Explore the timeless ideas that have inspired and guided humanity throughout history and their relevance and practical application for our lives. This first evening can be attended for £10 as a standalone introduction to **Philosophies of East & West** however if you are interested in learning more about the full 18-week course and applying, please visit [philosophiesofeastandwest.org](https://www.philosophiesofeastandwest.org/ "https://www.philosophiesofeastandwest.org/")

**Whose knowledge is centred in design? Whose voices are heard, and whose are overlooked?** Join us for an interactive workshop that goes beyond surface-level inclusion to critically explore power, culture, and equity in design practice. **What’s the event about?** We want to create a space where we can talk honestly and practically about what it means to go beyond inclusive design — to question who design is for, how it’s done, and how we might do it differently. It’s not a lecture, nor is it about having the “right” answers. It’s about exploring the topic together in a way that’s open, hands-on… and a bit of fun too. This event will include an interactive activity designed to provoke thought and discussion about what it means to design beyond inclusivity, creating space for deeper shared reflection. **Who’s it for?** This is for anyone working in or around design — whether you’re in services, research, strategy, policy, or community roles. You might: •⁠ ⁠Be curious about the term “decolonising” but not sure where to start •⁠ ⁠Feel a bit disconnected from this kind of conversation •⁠ ⁠Be looking for a more grounded, less academic way in •⁠ ⁠Just want to meet others thinking about design and equity in new ways **What can you expect?** •⁠ ⁠A hands-on group activity inviting you to explore an unfamiliar world, challenge assumptions, and think differently about power, culture, and design •⁠ ⁠Facilitated group reflection and conversation on how we talk about — and act on — the idea of decolonising design in our work •⁠ ⁠Informal conversations and networking at the pub to follow What you’ll take away •⁠ ⁠A practical framework you can adapt or reuse in your own work •⁠ ⁠A more grounded sense of what “decolonising design” can mean in everyday practice •⁠ ⁠A chance to connect with others exploring similar questions Whether you're completely new to decolonising design or already working with these frameworks, you'll find space to reflect, learn, and connect with others navigating similar questions. **About the Ticket** The ticket cost is to hold your place and ensure commitment from attendees. **All participants who attend the event will be offered the option to request a full refund of their ticket price.** This approach helps us plan effectively while remaining accessible to those with financial constraints. Come ready to participate, question, and imagine design differently.

**PLEASE VISIT THE WEBSITE TO CONFIRM SESSION DETAILS AND LET US KNOW YOU PLAN TO ATTEND. THIS IS MANDATORY.** **Want to do something useful with your exercise? GoodGym is no ordinary gym. We're a group of people who get fit by doing good - helping out local charities and community groups with physical jobs like shifting compost and planting trees.** **📍 We meet at** **Greenleaf Road Baptist Church, 4 Greenleaf Road, Walthamstow, London, E17 6QQ** **at 6:30pm.** **🏃‍♂️ At 6:45pm we'll run, walk or cycle to do a 30-40 minute task.** **🏃‍♂️ Then we'll head back to where we started by 8:30pm, do some stretches and maybe grab a beverage?** It's FREE. It's fun. It's fulfilling. And we're a very friendly bunch. 🍇 — **BOOK ONTO THE SESSION** **To come to the session click here:** https://www.goodgym.org/v3/sessions **You will need to confirm your attendance on the GoodGym website** (this includes creating an account with us if you haven’t already - it only takes a few mins). The link above takes you to the session listings in your area - if this session doesn’t fit your schedule, you may find something that does so check it out. p.s. GoodGym is a charity and you will be asked whether you’d like to donate when first creating an account. The choice is yours and does not affect your ability to attend a session. — **FAQ** Not sure you'll keep up? GoodGym is for everyone (18+). Whether you've never run before, or are chasing a marathon PB, you are 100% welcome. We always have a back-marker so no one gets left behind. 70% of GoodGym members start as non-runners so if you're new to this kind of thing you will be supported by people who are all on the same journey. 👍 What do I need to wear? Most of us wear gym/running gear. Make sure you're prepared for the weather. Don't feel like you're fit enough? Our tasks are simple and fun. There are easy jobs as well as more challenging things for those who want a workout! The choice is always yours. Do I need to bring anything? Gardening gloves are really useful for a lot of GoodGym tasks. And a head torch too if it’s likely to get dark. Please bring some if you can but there’s no requirement 🧤💡🧤 What is GoodGym? We're a (really lovely) group of people who use our energy to make a difference in our local community (and in communities across the UK!). We often meet on a weeknight, at least once a week, for a session to do good and get fit. We'd love you to come and join us. Any questions, just pop a comment below or send me a message. Find out everything you need to know at goodgym.org

Register: [https://luma.com/london-mar5](https://luma.com/london-mar5) **Join our meetup for AI nerds, engineers & founders!** We share the latest insights about: *AI dev tools, Agent frameworks, RAG, vibe coding, and more!* ​​\*\*// FOR WHO\*\* ✅ Devs, Product peeps, Data lovers, ML engineers, Founders ✅ Anyone building with AI ⚠️ Some LLM knowledge required!\* Neo4j Session: **Living in an Agentic World (model) by Andreas Kollegger** What if we onboarded AI agents the same way we onboard employees? That's the key insight of "context graphs" - giving agents access to why decisions are made improves their performance. This leads to \*Agentic World Models\*: the convergence point where agent memory, knowledge graphs, and context graphs meet. Agents discover written policies and unwritten tribal knowledge, learn formal org structures and informal influence networks, and capture the \*decision traces\* that explain not just what happened, but why it was the right call. We'll cover: \- how to capture decisions traces \- how to query the context graph when making decisions \- a demo of what this looks like Together, we'll put context in context.

Hey! Welcome to my new group :) This is the first event. Let's meet in a beautiful environment on a quiet Sunday morning and talk with each other. You can introduce yourselves and if you have ideas for future events, you are welcome to suggest. This event takes place at the St James's Park Cafe in St James' Park. Unfortunately, the system doesn't allow for the Cafe to be shown, only the park. The cafe is in the middle of the park and here is the link to the website: https://www.royalparks.org.uk/visit/parks/st-jamess-park/st-jamess-cafe Hope to see you all there!

Training session for women of all levels! We welcome complete beginners and advanced players with coaching tailored to your skill level⛹️‍♀️ Time: 10:00 am - 12:00 pm * Basketball Fundamentals, Basketball Drills, Skills, Defence and Offensive Plays, Fitness session Costs for sessions £10.0 for all Directions The venue is less than 5 mins from Latimer Road Station please call if you have any problems P.s. All parking spaces have pay and display bays until 1:30pm (£1 per hour) 07958484045 Website: mbsoul.co.uk Twitter: @MBS_SOUL Facebook: SOUL \| Basketball\, Sports\, Skills & Fitness Instagram: mbs_soul TikTok: mbs_soul

We playtest all sorts of games - strategic, silly, creative, or whatever. Some games are almost done. Some are very early ideas. We test anything that will fit into 90 minutes. You don't need to bring a game - we always love to have new playtesters! Please let us know in the comments when you plan to arrive/leave and whether you are bringing a game or not. This helps us to plan the day better. The schedule is: 10am onwards - gathering, chatting 11am sharp - playing for 90 min ('slot 1') 12:30ish - break for food/chat 1pm sharp - playing for 90 min ('slot 2') 2:30ish - break for food/chat 3pm sharp - playing for 90 min ('slot 3') 4:30ish - finish up Often, we might hang around afterwards, to play some already-published games. We are strict on timings, so please try to arrive a few minutes before the session to limit disruption. You can just come for part of the day if you wish. The reason we have fixed timings for the 3 'slots' is to make it easier for folk to do so. Designers of all levels of experience are welcome! But if it's your first time, we ask that you don't bring a game and just spend some time learning how the group works. The group works based on reciprocation. If you expect to test your own game, make sure stay for long enough to play other games. As a general rule of thumb, you can expect to play one of your own games every third 90-minute session. So if you stay a whole day (3 sessions), you can expect to have one session to play your game(s). A good rule of thumb is that if you come all day, you will have one 90 minute session with two other playtesters in which to test your own games. It is sometimes possible to test games with more players. If your game requires 4 or more, please note that as standard you will be allocated half of a session (45 minutes). Pre-covid, we were getting unmanageable. As a result, we may have to limit attendees. This is a free-to-use venue, and we have to be mindful that other folk want to use the same space. Please note: This is an adults only event. We look forward to seeing you!

**Tickets:** [https://tickxts.com/e/zXOg1QV3](https://tickxts.com/e/zXOg1QV3) **🎶 THE KICKBACK PRESENTS** **FRIDAY AFTER WORK – RNB EDITION** **Friday 06 March 2026** **6:00 pm – 12:00 am** **Patch St Paul’s** 58–60 Carter Lane, London EC4V 5EF **Friday After Work** is designed for Black professionals who want to wind down at the end of the week without forced networking or nightclub chaos. It’s a relaxed evening built around good music, good conversation, and a room full of people who understand the value of community. Come straight from work or arrive later. The pace is easy and the atmosphere is considered. *** **Why Attend** This event brings together Black professionals, founders, creatives, and entrepreneurs in a setting that allows for genuine connection. On the night, expect: * A comfortable space to unwind after work * Food and drinks available throughout the evening * Thoughtful networking without pressure * Music that sets the tone rather than dominates the room *** **Schedule** **6:00pm – 7:30pm** Food, drinks, arrivals **7:30pm – 8:20pm** Open networking and conversation **8:30pm – 9:00pm** Light games and icebreakers **9:00pm – 12:00am** After party *** **Music** RNB at the centre, supported by hip hop, 90s classics, Amapiano, bashment, soca, and Afrobeats. *** **Dress Code** Casual chic or smart casual No hoods *** **Who It’s For** Black professionals and entrepreneurs Ages 23 and over *** **Stay Connected** Follow The Kickback Instagram, Twitter, Facebook: @TheKickBackHQ Join the WhatsApp community for event updates and announcements. *** **Photography Notice** Photography and videography will take place during the event. Attendance confirms consent for content to be used by The Kickback. Secure your ticket and join us. *Please note: Pictures and videos will be captured for marketing purposes. By attending, you consent to their use by @TheKickBackHQ.* **For more information, visit:** [www.wearethekickback.com](http://www.wearethekickback.com/) 🎟️ Link to WhatsApp Community: [Join here](https://chat.whatsapp.com/G3afVSIpZLP1cQkRsdhMVc?mode=wwt) **Don’t miss the vibe. Please save the date and join us for an unforgettable evening!** **Music Policy: RNB + More!**

**Please note that this event will take place IN PERSON on Saturday, 7 March, 2026 and Sunday, 8 March, 2026 in London from 9am London time until 5pm London time on each of the two days.** **In collaboration with Imperial College MathSoc!** **Full title:** A Weekend with Robert Carver in London: Backtesting Properly **Speaker:** Robert Carver **Training Agenda:** This workshop will run through the process required to construct backtests that provide realistic historic returns and provide the best chance of creating a strategy that will be profitable in the future. It is not about fancy ML or AI techniques, nor is it designed to give you a magic formula for making infinite money from trading. Instead it will focus on understanding: \- statistical significance \- optimisation \- the importance of robustness and how to achieve it \- avoiding the three different types of overfitting **Pre-requisites for workshop:** \- Attendance at the talk: https://www\.meetup\.com/thalesians/events/312539371/ \- Ability to use python / pandas ecosystem to the level of [https://www.oreilly.com/library/view/python-for-finance/9781492024323/](https://www.oreilly.com/library/view/python-for-finance/9781492024323/) \- A laptop with a full Anaconda stack **Venue:** Huxley Building, Imperial College London, 180 Queen's Gate, South Kensington, London SW7 2AZ **Biography:** Robert Carver is an independent systematic futures trader and writer. He is a visiting lecturer at [Queen Mary, University of London](https://www.qmul.ac.uk/sef/staff/carverrob.html), and is research advisor to [Stylus Capital](https://stylus.digital/), a hedge fund trading digital assets. He is the author of four books: “[Systematic Trading](http://www.systematictrading.org/)", "[Smart Portfolios](https://www.systematicmoney.org/smart)", "[Leveraged Trading](https://www.systematicmoney.org/leveraged-trading)" and "[Advanced Futures Trading Strategies](https://www.systematicmoney.org/advanced-futures)". [Until 2013](http://news.efinancialcareers.com/uk-en/151380/key-departures-at-man-groups-ahl-fund/) Robert worked for [AHL](http://www.ahl.com/), a large systematic hedge fund, and part of the [Man Group](http://www.man.com/). He was responsible for the creation of AHL's fundamental global macro strategy, and then managed the funds multi billion dollar fixed income portfolio. Prior to that Robert worked as a research manager for [CEPR](http://cepr.org/), an economics think tank, and traded exotic derivatives for [Barclays](http://www.barclays.com/) investment bank. He spent his early career in the Middle East. Robert has a Bachelors degree in Economics from the [University of Manchester](http://www.manchester.ac.uk/), and a Masters degree, also in Economics, from [Birkbeck College](http://www.bbk.ac.uk/), University of London. **Links**: Rob's blog: [https://qoppac.blogspot.com/](https://qoppac.blogspot.com/)

## \*Please note - to be admitted to this event you must register for approval here: [https://luma.com/lcsqwmf3](https://luma.com/lcsqwmf3) This weekend hackathon brings together LangChain and SurrealDB to explore how agents can move beyond demos by grounding themselves in structured, persistent context. As agentic systems become more autonomous, their biggest failure mode isn’t model capability - it’s context. Agents struggle with accuracy, consistency, and reasoning when memory is shallow or unstructured. Knowledge graphs provide a powerful way to represent relationships, state, and history, enabling agents to reason over how things connect, not just what text is retrieved. Over the weekend, you’ll build practical agent projects using the LangChain ecosystem, with a strong emphasis on knowledge graphs and real-world retrieval workflows, using SurrealDB as a unified data layer for graph, document, vector, and temporal data. You’ll also have plenty of time to connect with both the LangChain and SurrealDB communities in London, collaborate with other builders, and get hands-on support from mentors. *** ## Schedule **Friday** * 18:00 - Doors open, check-in, pizza & drinks * Hackathon kickoff, team formation & briefing (time TBC) **Saturday** * All day - Build, iterate, mentor support (details TBC) **Sunday** * Final build, demos & judging (details TBC) * 15:30 - Closing, winners & wrap-up Full challenge details and rules will be shared ahead of the event. *** ## What you’ll work on * Agent workflows built with LangChain * Knowledge graph–driven context and memory * Hybrid retrieval patterns (vector + graph) * Persistent agent state and evolving context * Practical, production-oriented agent use cases *** ## Prizes * Swag and LangSmith credits from LangChain * Swag from SurrealDB *** ## Why attend? This is a hands-on opportunity to build credible agent projects in a single weekend, learn production-oriented patterns, and explore how structured context improves agent accuracy and reliability. You’ll collaborate with experienced builders, get direct support from the LangChain and SurrealDB teams, and connect with the wider London agent and AI engineering community. **FAQs** **Is the venue accessible?** Absolutely! There is a lift that takes you up to Level 4 where the event is held. **Is this event for me?** SurrealDB events are for software engineers, developers, architects, data scientists, data engineers, or any tech professionals keen to discover more about SurrealDB: a scalable multi-model database that allows users and developers to focus on building their applications with ease and speed. **Am I guaranteed a ticket at this event?** Our events are tech-focused and in the interest of keeping our events relevant and meaningful for those attending, tickets are issued at our discretion. We therefore reserve the right to refund ticket orders before the event and to request proof of identity and/or professional background upon entry. **Are there any House Rules?** At SurrealDB, we are committed to providing live and online events that are safe and enjoyable for all attending. Please review our [Code of Conduct](https://surrealdb.com/legal/code-of-conduct) and [Privacy Policy](https://surrealdb.com/legal/privacy) for more information. It is compulsory for all attendees to be registered with a first **and** last name in order to attend. Any attendees who do not adhere to these requirements will be refused a ticket.

**Please note that this event will take place IN PERSON on Friday, 6 March, 2026 in London at 6pm London time (1pm New York time).** **In collaboration with Imperial College [MathSoc](https://imperialmathsoc.com/)!** **Full title:** Heisenberg's Backtest **Speaker:** Rob Carver **Abstract:** What is a backtest for? In fact, like electrons, backtests have two contradictory natures. Firstly, they tell how well a particular trading strategy would have done in the past. Secondly, they help you design a strategy that will perform well in the future. These are not the same thing. In this talk Rob discusses this problem and how to reconcile these two objectives. **Venue:** Huxley Building, Imperial College London, 180 Queen's Gate, South Kensington, London SW7 2AZ **Biography:** Robert Carver is an independent systematic futures trader and writer. He is a visiting lecturer at [Queen Mary, University of London](https://www.qmul.ac.uk/sef/staff/carverrob.html), and is research advisor to [Stylus Capital](https://stylus.digital/), a hedge fund trading digital assets. He is the author of four books: “[Systematic Trading](http://www.systematictrading.org/)", "[Smart Portfolios](https://www.systematicmoney.org/smart)", "[Leveraged Trading](https://www.systematicmoney.org/leveraged-trading)" and "[Advanced Futures Trading Strategies](https://www.systematicmoney.org/advanced-futures)". [Until 2013](http://news.efinancialcareers.com/uk-en/151380/key-departures-at-man-groups-ahl-fund/) Robert worked for [AHL](http://www.ahl.com/), a large systematic hedge fund, and part of the [Man Group](http://www.man.com/). He was responsible for the creation of AHL's fundamental global macro strategy, and then managed the funds multi billion dollar fixed income portfolio. Prior to that Robert worked as a research manager for [CEPR](http://cepr.org/), an economics think tank, and traded exotic derivatives for [Barclays](http://www.barclays.com/) investment bank. He spent his early career in the Middle East. Robert has a Bachelors degree in Economics from the [University of Manchester](http://www.manchester.ac.uk/), and a Masters degree, also in Economics, from [Birkbeck College](http://www.bbk.ac.uk/), University of London. **Links**: Rob's blog: [https://qoppac.blogspot.com/](https://qoppac.blogspot.com/)

Window functions have nothing to do with the Windows operating system but provide a “window” to a result set when used in SQL queries. They are powerful, set-based methods to view data in unexpected ways. Window functions provide easy, set-based solutions to solve some common problems: * Using running totals * Performing operations in intervals * Identifying data gaps and islands * Performing aggregates without losing detail Many people are confused by window functions and do not know how to use them properly. This session will explore window functions, how they work, and how to use them. Demonstrations with several examples will solidify how window functions can simplify queries and make them more powerful.

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!

Drake Lundstrom is presenting: Code Anywhere by Talking to your Phone Abstract: Have you heard the trend of people deploying code anywhere from checkout lines to doctors' offices? In this talk, you will learn how to talk to your phone and have an app on Azure to show your friend 5 minutes later. The basic DevOps tools you already know, plus a little bit of AI magic, are all you need! If you want to follow along, the demo will be in Azure with GitHub Actions and GitHub Copilot, and you can have it set up on your phone by the end of the session. Just come in with an Azure account and a GitHub repo. Join us for pizza, drinks, and networking @ Improving's office. Doors open at 5:45.

One of the most valuable parts of this community is the opportunity to think out loud with other product professionals. This session is built for exactly that. As we wrap up the quarter, it’s a great time to pause and reflect. What’s on track? What needs adjustment? Where could a small shift create bigger impact? Join fellow product professionals for a focused, interactive conversation designed to help you recalibrate for the next quarter. You’ll have the opportunity to share where you are, hear how others are thinking through similar challenges, and gain fresh perspective you can bring back to your team and organization. We’ll gather at 8:00AM, with discussion starting promptly at 8:15AM. 📍 First Watch - 7227 N High St Located in: The Shops at Worthington Ample parking is available. Food and beverages will be available for purchase. Start your morning with clarity and connection — we hope to see you there! ☀️

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/