C#

Join us for our Squash Sessions happening every Monday / Wednesday / Thursday 6pm to 8pm or 8pm to 10pm Suitable for beginners to the Squash Regulars. Each Session is $15 for pay per play. You can also enquire about being a member when you arrive. We use Meetup.com to advertise the session and our members use a private whatsapp group to register. So should you be the only one signing up, you may still see a full house that evening. Do sign up prior as we are limited to 16 pax per 2 hours sessions. Do whatsapp the organizer at 9006 0909 @Trevor to expedite the reply and confirmation of your bookings.

**ANNOUNCEMENT – Registration via this [link](https://go.gov.sg/stackmeetup-12mar2026-mc) only.** * Seats are on a first-come, first-served basis. * For admission into our event space, please register beforehand via GovEntry only. * Please present the QR code within your registration confirmation email upon check-in at our event space. **About this Meetup** Join us for a discussion exploring the evolving landscape of durable workflow executions in modern systems. As applications become increasingly distributed, durable execution has emerged as a critical paradigm for building resilient systems that survive failures whilst maintaining complete execution state. This session examines why durable execution is essential for modern architectures from multi-step processes spanning multiple services to long-running operations requiring distributed coordination. We'll explore real-world applications and human-in-the-loop processes that traditional patterns cannot handle reliably. The discussion covers challenges and learnings from building automation tools in GovTech, examining how durable execution solves common distributed systems problems like state management, fault tolerance, and observability. We'll delve into design principles that make workflows resilient by default and automatically handling retries. Whether you're evaluating tools like Temporal, Cadence, or others, this conversation offers practical insights into implementation strategies, use cases, and pitfalls to avoid. **[Learn with us today](https://go.gov.sg/stackmeetup-12mar2026-mc)**! **Programme** 7:00pm: Introduction By STACK Community 7:05pm: Opening By ​Steven Koh, Director, Engineering Management, Government Digital Products (GDP), GovTech Singapore 7:15pm: Building Opus: Delivering Durable Workflow Execution for Government Systems By Gabriel Tay, Staff Software Engineer, GDP, GovTech Singapore 7:35pm: Temporal Primitives to Real-World Design By Tao Guo, Staff Solutions Architect, Temporal.io 7:55pm: Real Application Use Case of Subscription Workflows Through TechBiz By Yong Weng Kiat, Software Engineer, GDP, GovTech Singapore 8:15pm: Q&A 8:30pm: End of STACK Meetup Click **[here](https://go.gov.sg/stackmeetup-12mar2026-mc)\*** to sign up! \*Registration will be accepted via GovEntry only.

Join us for Our Squash Sessions Happening every Saturday Morning 9am to 12 noon Suitable for Beginners to the Squash Regulars. Each session is $15 for pay per play. You can also enquire about being a member when you arrive We use Meetup.com to advertise the sessions and our members use a private whatsapp group to register. So should you be the only one signing up, you may still see a full house that morning Do sign up prior as we are limited to 20 pax over the 3 hour session. Do whatsapp the organizer at 9006 0909 @ Trevor to expedite teh reply and confirmation of your bookings.

Join us for our social squash sessions every sunday 1pm to 4pm ( 3 hours) 4pm to 7pm ( 3 hours) We have 4 glass courts and each court has an allowance up to 20 players each time rallying and sparring with each other Each session is $15 for pay to play. you may enquire about membership when there. We use meetup.com to advertise and our regulars use a private whatapp group to coordinate and sign up. So do not be discouraged if you see only yourself signing up for the event. There will be people! To sign up and have a speedier reply, do contact the organizer Trevor@9006 0909. Cheers

Join us for our Social Squash Sessions Happening every Saturday evening 6pm to 10pm. Suitable for Beginners to Squash Regulars. Each session is $15 for pay per play. You can also enquire about being a member when you arrive We Use meetup.com to advertise the sessions and our members us a private whatsapp group to register. So should you be the only one signing up, you may still see packed courts We have 4 glass courts for booking. We are limited to 20 pax over the 4 hour session. Do whatsapp the organizer at 9006 0909@trevor to get a faster reply and confirmatio of your bookings.

**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 **Abstract** TBD **YouTube Link** TBA

**Important Info: There was a conflict and we are meeting in the TEKsystems office on the 2nd floor.** On Thursday, March 12, 2026, we will meet at the TEKSystems offices at 700 N Hurstbourne Pkwy. Doors will open at 6:00 p.m., and the presentations will begin sharply at 6:30 p.m. Along with an excellent presentation, TEKsystems will provide food. Please RSVP so we know how much food to order. Afterward, we will go to Brick House Tavern for drinks and food to continue the conversation. The session will also be broadcast at https://twitch.tv/TaleLearnCode. ### Much Ado About Nullable - C# Nullable Reference Types Explained In 2019 (C# 8.0) Microsoft introduced a feature that has generated a lot of confusion, debate and outright dissent. I'm talking about Nullable Reference Types. In this presentation, I we dig into this feature, explore why it exists, what problem it tries to solve, how it works, and how people have critiqued it, so that you as a programmer can decide if and how you want to use it.

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.

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

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!

Discover Kiro, AWS’s innovative development environment that adapts to your workflow. Whether you prefer specification-driven development or a more intuitive, vibe-based approach, Kiro empowers you to build applications your way. In this session, speakers will explore Kiro’s core functionality and its evolution through re:Invent 2025, along with demonstrations of prompts used to create APIs, hooks, and steering documents. In the latter part of the session, watch as we build a complete example from scratch, showcasing Kiro’s agentic AI workflow in action for spec-driven development and vibe coding. What You'll Learn - Core Kiro concepts and development philosophy Feature evolution: pre and post re:Invent 2025 Practical examples: API creation, hooks, and steering docs Live coding demonstration with real-time problem solving Who Should Attend - Developers, solutions architects, and technical leaders interested in modern AWS development tools and AI-assisted coding workflows. **Speakers Bio:** Matthew Jorat: Matthew Jorat is a Customer Solutions Manager at AWS with nearly three decades of expertise in AI, cloud transformation, migration, modernization, IT, technology, and business. His career spans infrastructure engineer, solutions architect, security auditor, customer success director, support and services director, and operations officer. He was an early adopter of AWS services as a customer, and his current role at AWS uniquely blends his technical and business skills as he partners with executive teams to translate strategic priorities into measurable business outcomes through cloud adoption, AI implementation, and operational excellence. Matt leads end-to-end AI initiatives for enterprise customers, identifying high-impact use cases and maintaining relentless focus on measurable ROI. He holds eight AWS certifications and serves as Adjunct Professor at Franklin University teaching cloud computing and AWS architecture. His expertise encompasses GenAI, agentic AI systems, migration, modernization, and optimization strategies that drive transformation at scale. [https://www.linkedin.com/in/mattjorat/](https://www.linkedin.com/in/mattjorat/) Girish Bhatia: Girish Bhatia is a seasoned technology delivery leader with deep expertise in cross-domain program management. He holds multiple AWS certifications, including AWS Certified Solutions Architect – Associate, AWS Certified Developer – Associate, and AWS Generative AI Practitioner, and is also an AWS Community Builder. Girish brings over two decades of experience in the information technology industry. Throughout his career, Girish has led major technology-driven business transformation from modernizing on-premises applications to driving large-scale cloud migrations. His work includes API-based integration platforms, data-center and mainframe modernization, and enterprise cloud adoption initiatives. Based in Columbus, Ohio, Girish works at a tech-forward fintech company. He is passionate about AWS serverless architectures, Generative AI and emerging cloud technologies. An avid learner and builder, he continues to explore and apply the latest innovations in AWS to help organizations accelerate their digital transformation. https://www.linkedin.com/in/girishbhatia/[https://www.linkedin.com/in/girishbhatia/](https://www.linkedin.com/in/girishbhatia/) **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

This is a relaxed, community-driven Unity GameDev meetup. There’s no strict agenda this time — just developers getting together to talk shop, share projects, and exchange ideas. **Some topics that may come up (based on attendee interest):** • Frame Debugger & performance tooling • Addressables & additive scene workflows • Input System, localization, responsive UI • AI integration approaches • DevOps & LiveOps experiences • Full lifecycle: idea → cross-platform publishing • Favorite Asset Store tools and hidden gems • Weird Unity quirks we’ve all run into *Nothing is locked in.* Bring a project if you’d like. Bring a question. Bring a lesson learned. Or just come hang out and meet other developers. All skill levels welcome!