C#

NOTE: This working session is at West End Neighbourhood Library not MLK. It is near the Foggy Bottom Metro Station. A game development **Working Session** involves 3 key parts: 1. Tell people what you're going to do 2. Actually do stuff 3. Show people what you did **What to bring**: Laptop, Charger, maybe a power strip if you have one handy, any other game development tools you need. Try to download any software you need before the working session. There is Wifi at this location, but it may be slow if you have to download any large files.

You must read the following NVHC Sign-in Sheet Statement/Liability Disclaimer, **[https://nvhc.com/signin.pdf](https://nvhc.com/signin.pdf)** and then answer the question that you will see when you RSVP with "**I Accept**" to be permitted on the hike. **8 miles with an elevation gain of 804 feet along a very well-maintained shaded forest trail. For every 400 ft of elevation it counts as a mile. This hike is a C+/B- hike.** **Description:** **[Hemlock Overlook Regional Park](https://www.novaparks.com/parks/hemlock-overlook-regional-park)** has network of walking and equestrian trails in majestic, mature forest near the **[Bull Run,](https://www.novaparks.com/parks/bull-run-regional-park)** just outside the historic town of **[Clifton](https://cliftonva.gov/)**. Some of the oldest trees in the region provide a wonderful shade canopy. The National **[Old-Growth Forest Network](https://linkprotect.cudasvc.com/url?a=https%3a%2f%2fwww.oldgrowthforest.net%2f&c=E,1,7onEFlTvxniIPB-F8lirjeWTlnY7uvDXYg3vOnmGNWYjYYd1ItVGOD7z3zmN8GZT5ciWkPEZUQIeeAfKGAcyTy6trj3Cw5qsTr31OuW0&typo=1)**[ ](https://www.oldgrowthforest.net/)recently added the park as an important site. We will encounter varied terrain including **steep hills** and **rocky sections.** **Pace:** The pace will be about 2.5 mph. **Bring:** adequate water/hydration as there are no facilities until the end of the hike, snacks/lunch, and sturdy hiking shoes and hiking poles if you use them. **Fee:** None **Dogs:** Dogs are **not** welcome. **[NVHC Dog Policy](https://tinyurl.com/nvhcdogpolicy)** **Weather:** weather for this location is **[HERE](https://weather.com/weather/today/l/434885816dced9dd270292ef3091a4d5d474bc898df914d47c36585a0f98d1c2).** **Where to Meet:** **13220 Yates Ford Road, Clifton VA 20124** \-\- gravel parking at the end of the road\, right side\. In the event this area is full, **additional parking** is available a little earlier on Yates Ford Road across from **Paradise Springs Winery.** **GPS Coordinates: 38.767165, -77.403358** **[LINK](https://maps.apple/p/.c-V25yHuzJMoq)** (Apple Maps) **POST-HIKE FELLOWSHIP**: **[Paradis Springs Winery](https://paradisespringswinery.com/)**

Title: What Is Progress? Knowledge Aggregation, Living Textbooks, and the Automation of Scientific Discovery Date: June 20 2026 Noon - 14:00 EDT Summary: Our collective knowledge infrastructure — the textbooks, professional training resources, and literature syntheses that define what professionals across disciplines believe to be true — is quietly accruing a structural liability. Compounded confirmation bias, stacked citation-by-citation into the foundations of formal knowledge, means that breakthroughs can take decades to reach the classrooms, clinical workflows, and decision-making frameworks where they matter most. Meanwhile, the deepest friction is rarely acknowledged: before any field can build meaningful consensus on "why" or "how" a phenomenon occurs, it must first establish honest, consolidated agreement on "what" has actually been observed. That prior step is routinely skipped, assumed, or fragmented across siloed literatures that never cross-pollinate. This talk introduces a framework called "Knowledge Aggregation" — with two distinct but complementary ambitions. The first is descriptive transparency: algorithmically mapping what has been said, measured, and documented across a problem space, without imposing causal interpretation or narrative. The second traces the boundary between empirical observation and explanatory claim, building systems that can separate the "what" from the "why/how" — because consensus on mechanism cannot be meaningfully constructed until consensus on phenomenon is first established. Both ambitions are now within reach. By composing tools already at our disposal — large language models, classical NLP pipelines, public data repositories, and engineering-grade automation frameworks — it becomes possible to model knowledge itself, rather than merely imitate individual experts. One concrete expression of this is automating the writing of living textbooks: compressing the lag from bleeding-edge discovery, through replicated evidence, all the way to professional training resources. But the deeper aspiration reaches further — toward automating the discovery of scientific insights that have never previously been conceived, by systematically surfacing hypothesis combinations that no single siloed researcher would have had the cross-disciplinary vantage point to even ask. Drawing on ongoing systems biology and computational research — with ME/CFS research demoed as a use case for what siloed, fragmented knowledge infrastructure costs in practice — this talk maps the conceptual architecture, the real-world friction, and the data science toolkit for building it. Speaker: As a systems biologist at heart, Sam specializes his biomedical research on interactions and connections in biology - rather than just one domain of expertise. He wears many hats and collects skill sets across disciplines, with degree studies and industry experience acquired across Chemical Engineering (BSc), Bioinformatics (MSc), Systems and Synthetic Biology (M2), Biomedical Sciences (MSc), and beyond. Even more important to him than niches or fields of work, comes down to the synergistic approaches that allow us to move beyond reductionism. The notion that a question can only allow for one answer, is inherently reductionist. By resisting many norms in science and engineering which can get overly reductive, his current role as Principal Investigator of Research for DMV Petri Dish (501(c)(3) non-profit local to the DMV region) embraces computational frameworks that aide scale-up and automation - not only around the processes which already exist with established workflows, but also taking a keen interest in attempting and accomplishing ambitions which have never been perceived to be possible previously. Sam carries a passion for the synergy of computational biology - fused with wet lab validation. This way, one can build a beautiful knowledge base in the theoretical sense, and then test to see if said computational prediction might actually be able to stand in the real world with wet lab validation. Translational modeling starts to become possible once biological experiment design can be iteratively looped alongside computational model design, optimization, and analysis - empowering the design of a better wet lab experiment, followed by a better computational model, back and forth until science is done!

It's my birthday! Let's craft. We'll be meeting at Quill and Crumbs at the Shakespeare Folger Library in SE. The Shakespeare Folger Library is about 3 blocks from the Capitol South metro. Head up First as you get out of the station, pass the Library of Congress and the Capitol, turn right on East Capitol, and the Folger is on the right. The entrance is around the side, not through the front of the building. Head upstairs to the cafe and we'll be at the tables at the back. Bring your own cross stitch, knitting, crochet, or other portable craft.

Join the DC Portuguese Conversation Group to watch the Brazil vs Haiti World Cup Match at La Cosecha on Friday, June 19th! Match starts at 9, but feel free to arrive an hour early. Come practice Portuguese, build new connections and broaden your cultural/lusophonic horizons with us! Whether you are a native Portuguese speaker, an English-speaking expat looking to practice Portuguese, or simply interested in making international friends, this event is perfect for you. Come ready to engage in stimulating conversations, make new connections. Ate ja, tchau!

Allen Pond Park, 3330 Northview Dr, Bowie, MD \*\*\*PLEASE DOWNLOAD ROUTE PRIOR TO MEETUP. NOT A BEGINNER'S RIDE. Beginners please join us on Wednesdays at Paceline Meetup 8:30 am Ride off 9:00am A/B Group Route (40 miles, 1,900 ft): https://ridewithgps.com/routes/44688420 A Group average moving speed = 20+ mph B Group average moving speed = 17-19 mph \*\*\* C-Group Route (20 miles, 854 ft): https://ridewithgps.com/routes/47505625 C-Group average moving speed = 14-16 mph \-\-\-\-\-\-\-\-\-\- \*\*\*PLEASE DOWNLOAD NEW ROUTE PRIOR TO MEETUP. NOT A BEGINNER'S RIDE. Beginners please join us on Wednesdays at Paceline \-\-\-\-\-\-\-\-\-\-\-\- This is a self-supported ride. No SAG. No Sweepers. Group Ride Guidelines: 1\. Safety first is the primary tenet of DMVCR\! 2\. Bicyclists who participate on DMVCR club rides are required to wear a properly fastened helmet\. 3\. Bicyclists may not ride more than two \(2\) abreast and may not impede traffic\. 4\. Bicyclists must come to a complete stop at all stop signs and traffic lights displaying a red signal\. 5\. Bicyclists are expected to have their bikes in proper working order\. 6\. Bicyclists are expected to ride with repair equipment in the event for flat tire\, etc\. 7\. Bicyclists should bring adequate nutrition to include enough hydration and snacks\. 8\. At night\, bicycles must be equipped with a front white light and a rear red reflector or red light visible\, both visible from 600 feet away\. Disclaimer: \*\*\*Please note DMVCR is not responsible for any accidents, injuries and/or damages or any combination thereof, which may occur to you and/or your bike. If you decide to participate on the ride, it means that you have read, understood and agreed that you are riding at your own risk and you waive all claims against all other riders who participate or organize the group ride.\*\*\*

Let us meet up for a language exchange. We will give out name tags. You write your name and what language you speak and what language you would like to exchange. ***GRAB A DRINK AND YOU ARE ALL SET TO FLEX YOUR LANGUAGE CAPACITY. YOU NEED TO GET AT LEAST A DRINK OR FOOD :) To get the event going and show support. We know that you like our events. P.S. : We have non-alcoholic drinks as well.*** We have a tiny venue and we hit capacity often and early arrival is suggested. We have the discretion to decide entry. All languages are welcome! However we don't guarantee the availability of a partner in that particular language, you would like to exchange. HOW IT WORKS : We will try to assign tables for each represented languages and will direct attendees to their respective tables accordingly. All languages are welcome! However we don't guarantee the availability of a partner in that particular language, you would like to exchange. Rules to abide : 1. Event is free and 21+ (bring ID). 2. Be respectful to your counterparts and give them a chance to exchange with others as well. 3. We all are native speakers of one or two languages and be willing to help others and try to accommodate as much as possible. 4. If you don't speak the other person's required language, LEAVE THEM ALONE. 5. Rude or aggressive members are removed from the group at an organizers discretion. 6. This is a face-to-face language exchange event. DO NOT try to arrange an online meeting, by using the comment box or direct message. 7. Most of our members complained about people writing in the comment box. Since it sends notification to all attendees. If you have any questions, send a message to the organizers. Don't write in the comment box. 8. We have ZERO TOLERANCE for solicitation. We don't allow anyone to run their own agenda at the Event. If you are interested to promote/sponsor/collaborate; contact us via (info@merevents.com). 9. When you get there, we will greet you and take you to your respective group. 10. Don't be shy of your local languages. We have diplomates assigned to different countries, who would love to practice your languages. 11\. Be patient for the first 30 minutes\, up until we form your respective language group\. 12\. We will have a registration station and check you in\. 13\. This is mainly a social for Intermediate/Advanced/Native Speaker\. It is not as such to learn a language\. Beginners\, if you want to learn a language\, reach out to us \(info@merevents\.com\)\. We have a school and will arrange you a class\. Also\, if you are a native speaker and would like to teach your language\, apply by email\, we are hiring\. ***AFTER THE EXCHANGE, WE HIT THE DANCE FLOOR! BRING YOUR DANCING SHOES, WE WILL DANCE THE NIGHT AWAY!***

It is irresistible, to enjoy a Spanish and Portuguese convo with appetizers, glass of wine and rail drinks. ***GRAB A DRINK AND YOU ARE ALL SET TO FLEX YOUR LANGUAGE CAPACITY. YOU NEED TO GET AT LEAST A DRINK OR FOOD :) To get the event going and show support. We know that you like our events. P.S. : We have non-alcoholic drinks as well.*** We have a tiny venue and we hit capacity often and early arrival is suggested. We have the discretion to decide entry. HOW IT WORKS : We will try to assign tables for each represented languages and will direct attendees to their respective tables accordingly. Rules to abide : 1. Event is free and 21+ (bring ID). 2. Be respectful to your counterparts and give them a chance to exchange with others as well. 3. We all are native speakers of one or two languages and be willing to help others and try to accommodate as much as possible. 4. If you don't speak the other person's required language, LEAVE THEM ALONE. 5. Rude or aggressive members are removed from the group at an organizers discretion. 6. This is a face-to-face language exchange event. DO NOT try to arrange an online meeting, by using the comment box or direct message. 7. Most of our members complained about people writing in the comment box. Since it sends notification to all attendees. If you have any questions, send a message to the organizers. Don't write in the comment box. 8. We have ZERO TOLERANCE for solicitation. We don't allow anyone to run their own agenda at the Event. If you are interested to promote/sponsor/collaborate; contact us via ([info@merevents.com](http://info@merevents.com)). 9. When you get there, we will greet you and take you to your respective group. 10. Don't be shy of your local languages. We have diplomates assigned to different countries, who would love to practice your languages. 11\. Be patient for the first 30 minutes\, up until we form your respective language group\. 12\. We will have a registration station and check you in\. 13\. This is mainly a social for Intermediate/Advanced/Native Speakers\. It is not as such to learn a language\. Beginners\, if you want to learn a language\, reach out to us \([info@merevents.com](http://info@merevents.com/)). We have a school and will arrange you a class. ***AFTER THE EXCHANGE, WE HIT THE DANCE FLOOR! BRING YOUR DANCING SHOES, WE WILL DANCE THE NIGHT AWAY!***

Let's get together to play some competitive quads and doubles volleyball. **COST**: FREE **Court Type**: Outdoor grass **Minimum Skill Requirements**: Intermediate (click [here](https://docs.google.com/document/d/1PojSi4qdlRsv1msCHhvpQ43iDc4FfzQwpWCc3kafVMY/mobilebasic) for details) Attention: 1. This event is **NOT on a first come-first serve** basis and players with higher skill level and players who can bring a net/ball will get priority over others on the wait list. 2. Since skill levels are **self-reported**, some new attendees may not meet the expected level. For doubles, we encourage you to choose a partner you can enjoy the game with, and since this a competitive event, it is okay if you make a strong team and win all the games. 3. Each person must help set up and take down one net, leaving some nets unset for latecomers. 4. Please answer all questions, so it's helpful for us to organize the event. **Smiley Social documents:** 1. [Group Rules](https://docs.google.com/document/d/1HrG35p_0M08leRvCp8XWG3CMkr_GL928XFabl5T6Dvg) 2. [Smiley Social Volleyball Levels](https://docs.google.com/document/d/1PojSi4qdlRsv1msCHhvpQ43iDc4FfzQwpWCc3kafVMY/edit) 3. [Good doubles partner](https://docs.google.com/document/d/14weEw-P52XKx0P8K2l-ZOFtYU61wmfdkSkopbG5avro/) 4. [Liability Waiver](https://docs.google.com/document/d/1W2mq-7m99lmvd7gdWYaSUFtvVg4UGnzV6koafAbHmco)

Come exchange Asian Languages that you speak! ***GRAB A DRINK AND YOU WILL BE ALL SET TO FLEX YOUR LANGUAGE CAPACITY. YOU NEED TO GET AT LEAST A DRINK OR FOOD :) To get the event going and show support. We know that you like our events. P.S. : We have non-alcoholic drinks as well.*** We have a tiny venue and we hit capacity often and early arrival is suggested. We have the discretion to decide entry. We will assign tables for represented languages. All languages are welcome! However we don't guarantee the availability of a partner in that particular language, you would like to exchange. As you all remember well, this event used to bring out hundreds of people every week. However, it was discontinued last year for obvious reasons and we couldn't gather that many people now, because of restrictions. Hence, we are downsizing and caping the number of attendees. We have super limited spots and advance ticket purchase is required. ***AFTER THE HAPPY HOUR, WE HIT THE DANCE FLOOR! BRING YOUR DANCING SHOES, WE WILL DANCE THE NIGHT AWAY!*** HOW IT WORKS : We will try to assign tables for each represented languages and will direct attendees to their respective tables accordingly. All languages are welcome! However we don't guarantee the availability of a partner in that particular language, you would like to exchange. Rules to abide : 1. Event is free and 21+ (bring ID). 2. Be respectful to your counterparts and give them a chance to exchange with others as well. 3. We all are native speakers of one or two languages and be willing to help others and try to accommodate as much as possible. 4. If you don't speak the other person's required language, LEAVE THEM ALONE. 5. Rude or aggressive members are removed from the group at an organizers discretion. 6. This is a face-to-face language exchange event. DO NOT try to arrange an online meeting, by using the comment box or direct message. 7. Most of our members complained about people writing in the comment box. Since it sends notification to all attendees. If you have any questions, send a message to the organizers. Don't write in the comment box. 8. We have ZERO TOLERANCE for solicitation. We don't allow anyone to run their own agenda at the Event. If you are interested to promote/sponsor/collaborate; contact us via (info@merevents.com). 9. When you get there, we will greet you and take you to your respective group. 10. Don't be shy of your local languages. We have diplomates assigned to different countries, who would love to practice your languages. 11\. Be patient for the first 30 minutes\, up until we form your respective language group\. 12\. We will have a registration station and check you in\. You ought to have register on Meetup for a free entry\. Otherwise\, you will be subject to a cover charge\. 11. 13\. This is mainly a social for Intermediate/Advanced/Native Speaker\. It is not as such to learn a language\. Beginners\, if you want to learn a language\, reach out to us \(info@merevents\.com\)\. We have a school and will arrange you a class\. 12.

Improv workshop at Library. We will teach basics of Improvisation and rules before each game. Experienced and newbies alike are welcome to attend/participate. If you don't want to perform this time around, feel free to come enjoy the workshop and relax. If you need to cancel, please change your status to "will not attend."

**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

**Presenter:** Matthew Hess, Microsoft MVP **Time:** Pizza at 6:00, Presentation Starts at 6:30pm Eastern **Location:** Theoris, 9000 Keystone Crossing, Either Downstairs or in Suite 230 if main meeting room isn't available, Indianapolis 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. Looking forward to seeing you there!

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. Please RSVP via [Microsoft Build //localhost:columbus | Microsoft Reactor](https://developer.microsoft.com/en-us/reactor/events/27247/).

**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 Chris Pazsint will be talking about Agentic Coding. How does one use CLI Based Agents, and Agentic IDEs such as Cursor, Kiro, Antigravity? How to include agentic coding plugins for IDEs you already love such as Visual Studio Code. 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

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

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!

We are going to build together with all the CLIs! E will be doing it at Columbus Code and Coffee Agenda --- Hosted By James Power, Organizer Pete Gordon, Organizer Just a Software Guy in the age of the Internet. Complete your event RSVP here: https://gdg.community.dev/events/details/google-gdg-columbus-presents-ai-improv-lets-build-a-game-together-with-claude-code-codex-and-gemini-and-be-the-judge/.