F# Programming

NOTE: This working session is at Lamond-Riggs Library not MLK. It is near the Fort Totten 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.

[https://www.nps.gov/grfa/planyourvisit/fees.htm](https://www.nps.gov/grfa/planyourvisit/fees.htm) Be prepared as lately, the National Park has been charging $20 to enter. **There are two sides to Great Falls National Park as it is divided by the Potomac River. For many, this is a must-see place since it is great for landscape photography. Of course, there are other genres like wildlife and birds such as great blue herons, turkey vultures, and others to photograph. The park does not open until 7:00 AM and WIFI is not available. Cell phone service is spotty. An eBird group surveys these wonderful birds every Sunday at 8:00 AM, except during the Christmas Count. Check the eBird list for updates.** **The Group parks in the first lot just past the Visitor Center on the right and walks south toward the Visitor Center then continues down to the three overlooks. Access to the first overlook is not for the faint of heart since the terrain is rocky but it is worth it because it provides a clear view going upstream of the Potomac River. Sometimes, the Group photographs kayakers as they travel up and down the falls.** **The second overlook has easier access to the river and the falls. The third overlook has a couple of sections that have views over the river. Kayakers and birds are visible from this overlook. Park visitors have been known to climb down the rocks to the river, but it is not recommended as it is dangerous. It has been reported that on average seven people drown in the Potomac River every year.** **At the end of this field trip, the Group typically has breakfast at the Silver Diner in Tyson's Corner, 8101 Fletcher St, McLean, VA 22102.** Bring Water, a Tripod, polarizer filter, comfortable shoes, fully charged batteries, and empty cards By sending in an RSVP and joining this meetup event hosted by the Virginia Beltway Photography Meetup, I agree to abide by the rules and regulations (where applicable) of the event location, and I am also agreeing to the terms of the following release and waiver of liability, which shall be binding on my heirs, executors, administrators, successors, and assigns. In consideration of my (and my child’s) participation in the Virginia Beltway Photography Meetup, I do hereby release, discharge, and hold harmless the Organizer, its members, officers, directors, employees, and the leader(s) of this event from any and all liability by reason of any damage, loss, expenses, or injury arising from my (and my child’s) participation in this event, including that caused solely or in part by the fault of any and all of the above-named parties.

Hello piano players: Our next meeting will be at Bret Empie's apartment on Saturday, May 30, 2026 from 1:00 pm to 5 pm. Thank you for hosting, Bret! Bret lives in Westlake Towers: 7420 Westlake Ter Apt 204 Bethesda MD. It's a 16-floor tan brick building. It is not the dark red brick building across the street. Visitors don't need a parking pass. Be careful not to go to a smaller 4-story building called West Spring, whose address is, confusingly, 7420 Lakeview Drive. At both building entrances, there is a call box. Use the A-Z buttons to scroll to "Empie, Malcolm" and press the CALL button. Bret will buzz you in. Malcolm Empie is Bret’s official name. Ride-On Bus 47 comes close to Westlake Towers. Other buses stop at the Montgomery Mall Transit Center, 0.6 mile away. Bret's piano is a beautiful 1913 Steinway A, fully renovated inside and out. It is a treat to play. Bret has a hall closet for coats. When you come in, please remove your shoes. Bret hopes to see you there.

**Studio 151 Learning Lab: Photography Foundations Series — Lighting Basics** Photography starts with light—but understanding how to actually *use* it is where most people get stuck. This session is designed to simplify lighting in a way that makes sense for real-world shooting. Instead of a traditional lecture, we’ll learn through curated video content, pausing to break things down, ask questions, and connect it to real studio work. You’ll see how lighting works, talk through it as a group, and then have the chance to explore it hands-on. *** **What We’ll Cover** * Natural light vs. studio light (and when to use each) * Simple one-light setups that work * How light direction shapes your image * Creating clean, consistent results *** **What to Expect** * Guided video learning (watch + pause + discuss) * Real-time breakdown of concepts in plain language * Hands-on opportunities to experiment * Open networking with other photographers * Snacks will be available, bring a bagged lunch if you like! *** **You’ll Leave With** * A clearer understanding of how light works * Simple setups you can try immediately * More confidence in any shooting environment *** Free to attend (limited spots)

Hands-on learn how to save life & limb, when mired in the wilderness of an urban disaster zone, travel or rural area far from hospital, or natural area miles from an access point, during the critical minutes or hours before ambulance arrival. Come away with actual do-it-yourself care-giving skill and confidence, and 2-year SOLO certification. Counts as WFR Recertification, too. No prerequisites. YOUR SPOT IS NOT RESERVED UNTIL YOU'VE COMPLETELY REGISTERED AT WWW.SOLOWFA.COM \***Spaces are limited. REGISTER: www.solowfa.com or 434.326.4697** Can't make these dates? Check out more course locations and dates on our website. WHO: Open to the general public, adults & teens with solid attention spans. Know your loved ones are safe wherever they are. WHY: Mired in a disaster zone, travel or rural area far from a hospital, or natural area miles from an access point ... accidents, destructive weather, and terrorism happen, and all-too-often members of a group are not capable of dealing with the emergency. This leads to improper care of the patient, and endangers the entire group. Many recreational accidents are preventable, and improper care of trauma can compound even simple injuries. Very few first aid programs actually address the issues of providing emergency care in a setting where 911 is overwhelmed or not immediately reachable. In this course, classroom instruction and Q&A are interwoven with practical work and problem-solving exercises. Hands-on experience - a most powerful learning tool - during scenarios comprise \~50% of class. TIMING: This is a 2-day class, Saturday and Sunday, 8:00am -7pm each day. Fee: $295 (Earlybird)

Hands-on learn how to save life & limb, when mired in the wilderness of an urban disaster zone, travel or rural area far from hospital, or natural area miles from an access point, during the critical minutes or hours before ambulance arrival. Come away with actual do-it-yourself care-giving skill and confidence, and 2-year SOLO certification. Counts as WFR Recertification, too. No prerequisites. YOUR SPOT IS NOT RESERVED UNTIL YOU'VE COMPLETELY REGISTERED AT WWW.SOLOWFA.COM \***Spaces are limited. REGISTER: www.solowfa.com or 434.326.4697** Can't make these dates? Check out more course locations and dates on our website. WHO: Open to the general public, adults & teens with solid attention spans. Know your loved ones are safe wherever they are. WHY: Mired in a disaster zone, travel or rural area far from a hospital, or natural area miles from an access point ... accidents, destructive weather, and terrorism happen, and all-too-often members of a group are not capable of dealing with the emergency. This leads to improper care of the patient, and endangers the entire group. Many recreational accidents are preventable, and improper care of trauma can compound even simple injuries. Very few first aid programs actually address the issues of providing emergency care in a setting where 911 is overwhelmed or not immediately reachable. In this course, classroom instruction and Q&A are interwoven with practical work and problem-solving exercises. Hands-on experience - a most powerful learning tool - during scenarios comprise \~50% of class. TIMING: This is a 2-day class, Saturday and Sunday, 8:00am -7pm each day. Fee: $295 (Earlybird)

DeafPlusAdvocate is hosting our monthly ASL Social event in the DMV. Join us for a late spring ASL Social at Garden Social. Also, enjoy Hawaiian cuisine and great outdoor and indoor space. .If you are Deaf/hearing, interested in socializing, or looking for practice with American Sign Language (ASL), join us! All ASL levels are welcome! This is the perfect place for you! We will host ASL Social on Saturday, May 30th, at the L&L Hawaiian Barbecue from 5:00 PM - 8:00 PM. The address is: 4363 John Marr Dr, Annandale, VA 22003. If you have any questions, please don't hesitate to contact the DeafPlusAdvocate team.

[Profs and Pints Northern Virginia](https://www.profsandpints.com/washingtondc) presents: **“Artemis II and Beyond,”** on how the recent space mission fits into long-term plans for the Moon, with Michael J. Neufeld, retired senior curator for the Space History Department of the Smithsonian’s National Air and Space Museum. [Advance tickets: $13.50 plus sales tax and processing fees. Available at [https://events.ticketleap.com/tickets/profsandpints/northern-virginia-artemis-ii-beyond](https://events.ticketleap.com/tickets/profsandpints/northern-virginia-artemis-ii-beyond) .] NASA’s recent, spectacular Artemis II mission is a sign that the United States is serious about sending humans to the Moon again. Gain an understanding of how Artemis II fits in both past and planned lunar missions with historian Michael Neufeld, who was lead curator of the Smithsonian’s Destination Moon exhibit. He has taught at Johns Hopkins, Colgate, and other universities, and is the author or editor of nine books dealing with the history of technology. He’ll start by looking at the aftermath of the Apollo program of a half century ago and why it ended only four years after its first lunar mission. He’ll consider why no lasting lunar programs emerged from major announcements by two presidents, George H.W. Bush and George W. Bush, that astronauts would be going back to the Moon and on to Mars. His vividly illustrated lecture will then explore how Artemis is a product of a human spaceflight program that has changed dramatically over the past 50 years. We’ll look at how collaboration with Europe, Canada and Japan became integral to the shuttle and International Space Station programs, and how the rise of new commercial space companies such as SpaceX has enabled NASA to buy both space services and space craft. Both international and commercial partners are involved in the latest Moon efforts, with SpaceX and Blue Origin expected to supply the landers to take astronauts down to a planned base on the Moon’s South Pole. How soon will any of this happen? Probably not as quickly as NASA says, but the specter of a Chinese landing on the Moon by 2030 is one obvious reason to keep things moving along. We’ll look at the sustainability of the Artemis space program for at least the next decade or so. You’ll emerge from the talk with no doubt that exciting days are ahead for space fans. (Doors: $17, or $15 with a student ID. Listed time is for doors. The talk starts 30 minutes later.) Image: The Artemis II mission launch (NASA photo).

Just good ole Ultimate Frisbee. Tons of fun. Great group. No stacks. No pick calls (but no picks!!!). Fair warning to those totally new to ultimate: it's a lot of running. \*\*Please pay close attention to the rule #6 listed below. *What to DEFINITELY bring* 1. Running shoes/Cleats 2. One white shirt *and* one dark shirt !!!! See this one !!!! \-\-\- IMPORTANT you can play both dark and white so we can make teams when we get there; just pickup after all 😎 3. Water *What you can ALSO bring* 4\. Snacks & Drinks 5\. Gloves \(winter\) 6\. Sunscreen \(summer\) 7\. Sunglasses 😎 House Rules - 1. Starting Play: Each point begins with both teams lining up on the front of opposite end zone lines. The defense throws ("pulls") the disc to the offense. 2. Scoring: Each time the offense catches a pass in the defense's end zone, the offense scores a point. The teams switch direction after every goal, and the next point begins with a new pull by the team that just scored. 3. Movement of the Disc: The disc may be advanced in any direction by completing a pass to a teammate. Players may not run with the disc. The person with the disc ("thrower") has ten seconds to throw the disc. The defender guarding the thrower ("marker") counts out the stall count. 4. Change of Possession: When a pass is not completed (e.g. out of bounds, drop, block, interception, stalled), the defense immediately takes possession of the disc and becomes the offense. 5. Substitutions: Players not in the game may replace players in the game after a score and during an injury timeout. (Modified depending on the number of the attendees) 6. Non-contact: Players must attempt to avoid physical contact during play. Picks and screens are also prohibited. 7. Fouls: When a player initiates contact that affects the play, a foul occurs. When a foul causes a player to lose possession, the play resumes as if the possession was retained. If the player that the foul was called against disagrees with the foul call, the play is redone. 8. Self-Officiating: Players are responsible for their own foul and line calls. The host will also step in if it is needed. Please message the event host for any questions or concerns. \-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\- **Smiley Social documents:** 1. [Group Rules ](https://docs.google.com/document/d/1HrG35p_0M08leRvCp8XWG3CMkr_GL928XFabl5T6Dvg) 2. [Liability Waiver ](https://docs.google.com/document/d/1W2mq-7m99lmvd7gdWYaSUFtvVg4UGnzV6koafAbHmco)

Let's get together to play some competitive quads and doubles volleyball. **COST**: FREE **Court Type**: Outdoor grass **Minimum Skill Requirements**: BB+ (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)

### Drop-In Improv Class — Beginner Friendly **Improv for good people.** Join us for a fun, beginner-friendly drop-in improv class focused on play, laughter, and connection — in a supportive, no-pressure environment. You don’t need performance experience, improv training, or a “funny personality.” You just need a willingness to try. *** ### What to expect Each session includes: * Friendly introductions * Easy warm-ups * Guided short-form improv games * Lots of laughter in a small, welcoming group The exercises are inspired by shows like *Whose Line Is It Anyway?*, but the focus is on participation, not performance. *** ### A few important reassurances ✔ You don’t need to be “funny” ✔ You don’t need improv experience ✔ You *do* need curiosity and a willingness to play Everything is explained clearly, and you’re never put on the spot. *** ### Who this class is for This class is a great fit if you: * Are curious about improv but a little nervous * Want to meet new people in a genuinely welcoming space * Enjoy playful learning and low-pressure activities * Want a break from overthinking and daily stress Many people arrive unsure and leave smiling. *** ### How Meetup fits in Many participants first discover Laughy Place Improv through Meetup, attend a class or two, and then decide whether they’d like to continue by booking future classes directly through the website. There’s no pressure — Meetup is meant to be an easy, friendly way to try things out. *** ### Location & logistics 📍 **Theatre on the Run** 3700 S Four Mile Run Dr, Arlington, VA Parking and entrance are on the opposite side of the building from Four Mile Run Drive. Use the door labeled **“Arlington Cultural Affairs – Main Entrance.”** Ring the doorbell to be buzzed in. Sunday classes are usually in room 174 and Wednesday classes are usually in room 147, but you can check the class list by the concierge desk to be certain. I’ll be in the room about 20 minutes early to set up and meet folks as they arrive. If you can, please come a few minutes before the scheduled start time so we can kick things off together. *** Looking forward to laughing with you!

If you’ve already learned the basics of volleyball and want to keep improving your skills while having fun, this event is for you! **Skill Level:** Advanced Beginner (click [here](https://docs.google.com/document/d/1PojSi4qdlRsv1msCHhvpQ43iDc4FfzQwpWCc3kafVMY/mobilebasic) for details). **Reminders** 1. Attendance: We’ve noticed that the waitlist is growing, so please make sure your name is on the Going list if you plan to play. Our number of nets is limited so this helps avoid too many rotations. If your name is on the list but you don’t show up, it will count as an absence according to Smiley Social rules. Please update your RSVP at least 12 hours in advance if your plans change. 2. Waitlist: The waitlist is not first come first serve. We prioritize regular attendees, and will fill empty spots with new faces closer to the event date. 3. Injuries: Play safely and be mindful of others on the court. Respect positions and avoid risky moves that could lead to injury. If you’re not sure the ball is yours, call it before going for it to avoid collisions. 4. Game Rules: Let’s follow the basic volleyball rules, especially the three-touch rule so we can play properly and improve as a team! **Smiley Social documents:** 1. [Group Rules ](https://docs.google.com/document/d/1HrG35p_0M08leRvCp8XWG3CMkr_GL928XFabl5T6Dvg) 2. [Liability Waiver ](https://docs.google.com/document/d/1W2mq-7m99lmvd7gdWYaSUFtvVg4UGnzV6koafAbHmco) 3. [Volleyball Levels](https://docs.google.com/document/d/1PojSi4qdlRsv1msCHhvpQ43iDc4FfzQwpWCc3kafVMY/)

We are going to talk about the books we read—any books, from any genre. Whether it’s fiction or nonfiction, classic literature or something modern, everyone is welcome to share their thoughts, impressions, and favorite passages. It’s a relaxed and friendly conversation where we can discover new ideas and enjoy each other’s perspectives.

**FOR BEGINNERS** If you've ever seen Korean movies or shows, you may have seen characters play with small red cards decorated with flowers and animals. Those cards are called "hwatu" or flower cards. The most popular game played with hwatu is "Go-Stop". Come to this next Hwatu Hangout (Iris Edition!), and learn how to play Go-Stop. It can take some time to orient yourself with the cards and rules, but once you do, there's no turning back. It's major fun. **FOR EXPERIENCED PLAYERS** No Tazza-style deck rigging and, most importantly, *no gambling*. We will play with plastic chips to raise the faux stakes, but that's it! If you'd like to skip the lesson/demo, then please arrive at 2p for game play. \*\*\* **ETIQUETTE** Please update your RSVP at least 48 hours before the event to ensure that those on the waitlist have a chance to come. It's the nice thing to do! **FOR REGULARS** Thanks for coming back! Please email/DM me if you are planning to come. No need to sign up on meetup\~ \*\*\* **THE PLAN** • **1:00p - 1:10p**: Introductions • **1:10p - 2:00p**: Learn how to play & demo game • **2:00p - 3:30p**: Game play • **3:30p - 4:00p:** Socialize **THE LOCATION** **The Board Room DC** \| Game Bar & Brewery 1737 Connecticut Ave NW, Washington, DC 20009 **Parking:** Street parking **Public Transportation:** Dupont Circle (Red line); 5 minute walk to the Board Room \*\*\* **Questions?** Send an email to hwatuhangout (at) gmail (dot) com. Hope to see you there! Eunice

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

PLEASE NOTE!!! This event will be In-Person for our very 1st Improving collab! If you know the [Columbus Unity group](https://www.meetup.com/columbus-unity-user-group/) location, we'll be at the same place. This is our 1st event and are doing a soft launch with limited attendance. 1st come 1st serve. If you want to be there and we fill up, please email me at [info@thecogg.com](mailto:info@thecogg.com) and I'll be in touch. All street parking is free on Sundays but you can also pay to park in any of the local garages. See image of [parking map here](https://drive.google.com/file/d/1Mr9_LFIggbs-0_Zd3AJTGNqEhgMf2TzQ/view?usp=sharing). \-\-\- On the last Sunday of the month, we're having our usual end-of-the-month social gathering with our GameDev Meetup meeting. There will be announcements and presentations followed by some social networking Let's continue the conversations with good vibes and friends. All are welcomed from all ages and backgrounds to this public event. If we can, we'll be streaming or uploading the video later via our COGG YouTube channel here: [https://www.youtube.com/@TheCOGG/streams](https://www.youtube.com/@TheCOGG/streams) (Also please do subscribe if you have not done so!) No game development experience required! If you are interested in doing a 20 minute game development related presentation, please fill out our form online here: [https://goo.gl/forms/lVdTJZiNJewlPJuj1](https://goo.gl/forms/lVdTJZiNJewlPJuj1) Or e-mail us at info@thecogg.com with the following: Your Name, Company/Affiliation, Name of Your Game/Topic, Description, Tech Needs, and Your Contact. Be sure to check out our Discord for real time news updates: [https://discord.gg/NrBhuNQ](https://discord.gg/NrBhuNQ)

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

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

We connect you with up to 30 Men or Women tennis partners close to your PLAYING REGION and skill level. This program is less competitive, no champions crowned, no league standings just dedicated tennis partners who want to meet up with you on the courts. Players will meet up to play a tennis match or just to hit around. Just go through the [Join Page](https://www.tenniscolumbus.com/partner-program) to enter this program. [https://www.tenniscolumbus.com/partner-program](https://www.tenniscolumbus.com/partner-program)

**Latest Dojo Location!** **Knotty Pine Brewing** 1765 W 3rd Ave, Columbus, OH 43212 We're going to try a new dojo location for a few weeks and see how it works Dojos are informal Python group study sessions where everyone interested in Python gathers to learn about Python, help others with Python, or just hang out. Everyone is welcome from Python beginners to experts. Bringing a laptop is encouraged (we'll have extension cords and power strips). If there's something you want to learn leave a comment on this invite so we can plan ahead. We're looking for speakers for our Monthly Meetups! Fill out the form if you are interested in presenting to the Python Community. https://forms.gle/ehSfUAC2WgR34Crq9

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!