R Project for Statistical Computing

Megaparsec is a well known Haskell parsing library, most often used to parse text. But a token stream doesn't have to be characters, it can be anything with the right instances. What if you fed it a stream of Aeson.Value instead? Extracting structured data from real-world formats is often a messy process. Presentation is optimized for human consumption, not for automated processing: What looks like a table is really a sequence of heterogeneous rows with little shared structure. JSON can serve as a useful interchange format in those cases, but parsing becomes much more complicated than matching keys to fields. Treating decoded JSON as a token stream and running Megaparsec over it gives you composability, meaningful errors, backtracking, and the full combinator toolkit. The talk is based on an hledger personal finance automation use-case, turning PDF invoice statements into hledger journal entries. This talk follows the [Zurich Friends of Haskell General Assembly](https://www.meetup.com/haskellerz/events/313322610/) that starts at 6pm in the same room, which all members are welcome to attend.

Come and get you **Comedy Brew**, your fix of English Stand-Up Comedy! We serve a fresh, locally sourced 'menu' of 10 comedians, as organic as your favorite farm-to-table meal, all geared up to make you laugh out loud. **Tickets at:** [https://bit.ly/iyfcb](https://bit.ly/iyfcb) Unleash your laughter at [ROBIN's coffee](https://maps.app.goo.gl/E1e3H9GRDDJaPK8z9), the coziest New York-style coffee bar in the heart of Zürich. **Dare to Make 'Em Laugh? 🎤😂** Ever fantasized about grabbing the mic and cracking some jokes yourself? Well, your dream could come true! Visit [our performer's page](https://inyourfacecomedy.ch/perform/) to find out how you can take the stage and spread laughs like a pro. **See You There! 🎤😂** Come down to ROBIN's, break some bread, share some laughs, and maybe even catch the comedy bug yourself! See you there every Thursday! Powered by IN YOUR FACE Comedy 🌟 [Check Us Out!](https://instragram.com/inyourfacecomedy/) **Tickets at:** [https://eventfrog.ch/comedybrew](https://eventfrog.ch/comedybrew) **Frequently Asked Questions** * ***Is the show really in English?*** Absolutely. Every set is performed in English by a mix of Swiss-based and international comics, so no Swiss-German skills required. * ***What’s a “Comedy Open Mic”?*** It’s the testing ground for jokes. Pros road-test fresh material and brave newcomers grab their first five minutes. Expect some gems, some flops—and the fun of seeing comedy born in real time. * ***Will it be funny?*** Most of the time, yes! An open mic is a roller-coaster: seasoned acts, new voices, and the occasional glorious train-wreck. It’s all part of the charm. * ***Can I perform too?*** Yes - you need to book a spot - find out more about how to do it here: [https://inyourfacecomedy.ch/perform/](https://inyourfacecomedy.ch/perform/). * ***Do I need to buy tickets in advance?*** Please do. We’re usually running around before the show and door sales slow things down. If you’re stuck, we’ll try, but no promises. Link to tickets as at [https://inyourfacecomedy.ch/comedybrew/](https://inyourfacecomedy.ch/comedybrew/) * ***How does seating work?*** First come, first served so grab a drink, snag a seat, and settle in. * ***Is food available at the bar?*** ROBIN’s serves drinks only. For a pre-show bite, try **Restaurant Johanniter** (classic Swiss) or **Holy Cow!** across the street for burgers. * ***Will the comedians pick on me?*** We chat with the crowd for laughs, not humiliation. Friendly banter only - you’re safe. * ***How long is the show?*** Doors open 7:30pm, show starts \~7:50pm with a 15 min break in the middle ending around 10pm. Enough time for the last trams home... * ***Age limit?*** All ages welcome of course 16+ recommended (adult themes, spicy language).

Every year the Zurich Friends of Haskell meet for a general assembly as per the [statutes of the association](https://docs.google.com/document/d/1-8eHAK40hiH5jv79AscWtf3pyUNxx4Ls1LwkpLYK--8/edit?usp=sharing). The purpose of the Zurich Friends of Haskell is to organize ZuriHac and the HaskellerZ meetup. The general assembly gives you the opportunity to learn what the association has been doing in the year 2025 and to contribute to ZuriHac, the HaskellerZ meetup, and the Haskell community in Zurich. The general assembly is open to all members of the ZFoH. If you are not a member yet, please head over to [the ZFoH website](https://zfoh.ch) and sign up for membership. The agenda is as follows: 1. The board will present a summary of the association's activities in 2025. 2. The treasurer will present the financial report for 2025. 3. We vote to discharge the board for their work in 2025. 4. We will discuss the goals and aspirations of the association for 2026. 5. We will elect the board for the years 2026 & 2027. Please let us know if you have further topics you would like to discuss. Note: members of the ZFoH will receive a separate invitation via email. Please RSVP to this meetup event anyway so we get an accurate picture of who will be attending. Thank you! Looking forward to seeing you at the GA! PS: We'll be holding a regular HaskellerZ meetup right after the general assembly, to be announced as a separate Meetup event. Please RSVP for that event separately once it is announced.

Do you want to run regularly? Together in a group? Then run with us! #### **Every Thursday, 7pm at Lochergut, Zurich** We run about 7km and adjust the speed depending on the runners who join us. For us, running isn’t just about fitness and competition, it’s about community and connection. We believe that nobody should have to run alone, and that by running together, we can push each other to be stronger and more resilient. We look forward to welcoming you to the next run 🙌

We're planning the next Hackergarten Zurich 🥳 We're looking forward to see some familiar faces and share knowledge within the open-source community. Spread the word — everyone is welcome! Bring your project, a bug, a feature, a question... or just your time and enthusiasm 💜 As always there will be free drinks, beer and pizza, sponsored by Quatico. As usual we briefly present the open-source projects we'd like to work on, break up into groups and try to make an actual contribution. We offer free pizza, beverages and depending on weather conditions a great view on Zurich West from the rooftop terrace. Many thanks to Quatico (https://www.quatico.com) for hosting the event!

## Details Join us for the next edition of Distinct Innovators' networking event in Zurich, designed for innovators, entrepreneurs, and professionals to connect with purpose. ✨ Why join us? 🤝 Connect with peers of innovators, entrepreneurs and professionals 💬Engage in thought-provoking, meaningful conversations 💡 Gain fresh insights through meaningful conversations 🌐 Expand your network in a relaxed and welcoming atmosphere 🚀 Be part of a curated community where innovation meets collaboration 🎟 Free to attend - limited spaces are available 📌 RSVP to secure your spot. Let’s connect with purpose - meaningful connections create lasting impact. [https://luma.com/1zj50xmx](https://luma.com/ocr7t0gp)

Vorträge, Networking und Apéro für alle, die sich in Winterthur für Webtechnologien interessieren. Türöffnung um 18:30 Uhr, Talks ab 19:00 Uhr. [https://web-winti.ch/](https://web-winti.ch/) **ARIA Demystified: Make Your Web Thing More Accessible** Mohammed Chelouti Praktische Einführung in die Entwicklung barriereärmerer Webseiten und -Apps. **It's About Time** Aleksej Dix Introducing useTemporal library to build calendar UIs much faster.

Dear All, This session is mainly for the people who want to learn kundalini yoga/meditation in a traditional way. Traditionally the master will transfer his/her kundalini energy to the student to activate his important chakras (energy centre) including Third Eye and Crown Chakra. The student can start to feel his/her Kundalini Energy is rising from their base of the spine and feeling the energy vibration(Consciousness) in the third eye (the space between the eyebrows) from the Kundalini Activation. This session is helpful for the beginners who want to learn simple yoga-meditation exercises also. This is a general session to experience your inner kundalini energy. But if you need proper kundalini activation(Shaktipat), then pre-registration is mandatory. **What is included in this session?** Simple stretching practices for Hip and Spine (not complicated, even beginners can do) Kundalini Breathing Techniques Sound Energy (Mantra) Meditation Energy Healing Techniques Formal Kundalini Activation (optional and only for pre-registered people) Chakra Meditation Yoga Nidra (Relaxation) **Some of the benefits of Kundalini Energy Activation are:** Keeps the body healthy Mind attains its natural peaceful state, so the meditation becomes easy. Breathing pattern will be harmonized Stress release and peace Clear & sharp intellect More intuition Inner happiness Clairvoyance and Clairvision and to the ultimate SELF realization (which will lead to the blissful state - our true state) with enough years of practise **DONATION BASIS** **About the Teacher who conducts this session:** The kundalini wisdom teacher Jayaprakash is from India. He is practising kundalini yoga for the since 2005 under the guidance of Self Realized Indian Master "GuruMahan". He is teaching kundalini yoga since 2008 as part of a non-profit organization "Maha Shakthi Yogam Switzerland". He teaches Yoga/Meditation/Pranic Healing/Stress Relief courses in various places of Germany and Switzerland. He is the authorized kundalini yoga wisdom teacher from UPF(India) to give kundalini initiations (Shaktipat) with the Grace and Protection of his Master. All these events are conducted for non-profit purpose. Donations are collected on behalf of Swiss non-profit organization (Verein) "Maha Shakthi Yogam - Switzerland" **Eligibility:** Anyone can attend the session even if they don't have previous yoga/Meditation experiences. **Dress:** Wear a comfortable dress if possible yoga dress. We provide the yoga mat. **Please RSVP only you are really interested and coming ! Limited Seats !** **About Kundalini Shaktipat:** In every human being there is a source of natural energy that the yogis call the kundalini. In order to evolve in the yogic path, no matter what our path, the kundalini must be active. For most of us, the kundalini lies dormant at the bottom of the spine in the base chakra known as the Muladhar. When it awakens, it ascends through the chakras until it reaches the highest chakra, the Sahasrar. When that occurs, we merge with our True Self and attain SELF realization (our true nature). Shaktipat is the transfer of spiritual energy from the teacher to the student in order to awaken the kundalini. This process is compared to lighting one candle with another that is already lit and glowing. When the teacher is connected with the fully realized master and the energy is completely within his or her control, shaktipat initiation ensures that the student’s energy will remain active and stable. "Electricity is present everywhere, but there can be light only when the switch is turned on. Similarly the true master manifests the consciousness in the disciple through shaktipat.” **HAPPINESS is our TRUE Nature, which comes from within not from outside !**

We are excited to invite you to join our cyber security breakfast where we share our knowledge and experience in the constantly evolving field of cybersecurity.

Web Zurich presents inspiring talks all about the web. Join us for the March 2026 meetup! We will have three talks as well as chit-chat and drinks. Whatapp: [https://chat.whatsapp.com/FxOfVTK9nf431xHtVl3eGK](https://chat.whatsapp.com/FxOfVTK9nf431xHtVl3eGK) Website: [https://webzurich.ch](https://webzurich.ch) 18:30 \~ 19:00 Arrival time with drinks, chat and introduction 19:00 \~ 19:40 *Christian Heitzmann* **Why Documentation Won’t Write Itself—and AI Won’t Save You** For the last 15+ years, I’ve joined and consulted software teams that all struggled with the same problem: nobody likes writing documentation, and everybody pays the price for it. New developers spend weeks reverse-engineering codebases, architecture lives in people’s heads, and wikis quietly decay into noise. With AI now entering the picture, many hope it will fill the gaps. It won’t. I’ll show the simple ideas that change everything: how to think about documentation in the right levels, how to keep it close to the code, and how to avoid the decay we all know too well. These are the decisions that have to be made before any tool or process can work. The documentation won’t write itself. But there are ways to make it far easier and far more reliable. 19:40 \~ 19:50 **Short Break** 19:50 \~ 20:10 *Marco Gähler* **How to write good code** There is an infinite amount of solutions how you can solve a programming problem. Some are better, others are worse. The best solutions are easy to understand, maintain and errors are not able to hide. I wrote a book "Software Engineering Made Easy" about this topic and I'm more than happy to explain some principles that make your code better. Most of them are quite simple to understand, once you understand the mechanics, why your code always breaks. 20:10 \~ 20:30 *Marius Ishida* **AI: The Lightsaber Problem** My talk will challenge the popular narrative that AI fundamentally democratizes power by showing that, which I believe is not true at all. While generative AI lowers entry barriers for basic tasks, it disproportionately amplifies the productivity and leverage of already computer literate users. Empirical research shows that AI acts as a skill multiplier rather than a true equalizer, with outcomes strongly dependent on users’ ability to frame problems, verify outputs, and integrate tools into complex workflows. As a result, AI risks reinforcing a new AI driven digital divide, where technical literacy—not access alone—determines who truly benefits. 20:30 onward More drinks & chat We look forward to see you there! Location https://zurich.impacthub.ch/space/bogen_d/ Viaduktstrasse 93, 8005 Zürich, Switzerland Visit our website https://webzurich.ch/ for more information about the Web Zurich community. This event is supported by Impact Hub Zürich, The global community of entrepreneurial people prototyping the future of business. At Impact Hub, you can connect, collaborate, co-work and create great content in an inspiring environment.

Ready to sweat, smash, and socialize? Join **Zurich Fun Gamers (ZFG)** for our bi-weekly Sunday Badminton session at the legendary Yonex Halle! Whether you are a complete beginner or a smash-master, this is the perfect way to end your weekend. We book **minimum 4 courts**, so there is plenty of space for everyone. **[Tickets Required : Click here :](https://eventfrog.ch/ZFGBadminton)**[ ](https://eventfrog.ch/ZFGBadminton) **🏸 The Setup** * **Social Vibe:** We mix and match! It’s about fun first. * **Skill Levels:** We guarantee at least **one dedicated Beginner Court**. Advanced players can form a **Competitive Court** to battle it out. 🏆 * **Equipment:** Shuttles are **included**. Rackets available for rent (CHF 5). * **🔄 Rotation:** We may allow **2 extra players** on the bench to rotate in. This ensures full courts in case of no-shows/injuries and gives everyone a chance to catch their breath! 😅 **👟 The "Golden Rule" (Strict!)** * **NO OUTSIDE SHOES:** You must bring a separate pair of **clean, non-marking indoor court shoes** and change into them *inside* the locker room. No street shoes allowed on the courts. **🎟️ [Tickets & Pricing (Book Early & Save!)](https://eventfrog.ch/ZFGBadminton)**[ ](https://eventfrog.ch/ZFGBadminton)*[T](https://eventfrog.ch/ZFGBadminton)o manage court bookings (48h cancellation policy), we reward early planners:* * **[Early Bird Ticket:](https://eventfrog.ch/ZFGBadminton)**[ ](https://eventfrog.ch/ZFGBadminton)**[CHF 22](https://eventfrog.ch/ZFGBadminton)**[ (Buy 72h before event)](https://eventfrog.ch/ZFGBadminton) * **[Standard Ticket:](https://eventfrog.ch/ZFGBadminton)**[ ](https://eventfrog.ch/ZFGBadminton)**[CHF 25](https://eventfrog.ch/ZFGBadminton)**[ (Last minute)](https://eventfrog.ch/ZFGBadminton) * *Note: You must buy a ticket on Eventfrog to play. No cash/Twint on spot.* **📍 Logistics** * **Location:** Yonex Halle, Hardbrücke (Zurich) * **Meeting Point:** Inside the lobby at **15:50** (Warm-up & Shoes change) * **Game Time:** 16:00 – 17:30 (90 Mins) 🍻 **After the Game:** The fun doesn't stop at match point! We usually stay for a drink or coffee nearby to cool down and socialize. That’s the real ZFG vibe! ✨ Let’s smash it, ZFG-style! 💪🔥

Welcome to the Competitive Play Session. This session takes place every Saturday from 10:45 to 12:15 at the Yonex Badminton Hall Hardbrücke. The number of players on the waitlist one week in advance determines the number of courts booked. If you are on the waitlist but can no longer attend, please remove yourself as early as possible. Players are accepted into the session based on skill suitability. This session is for experienced players looking for quality games. Play is focused on doubles with a competitive mindset and consistent rallies. You should be comfortable smashing, return smashes and keeping up a moderate tempo throughout the session. New players and those who are new to badminton are welcome to join the PM Session (Open Level Play). Payment can be made via TWINT after the session.

Welcome to the Open Level Play Session. This session takes place every Saturday from 10:45 to 12:15 at the Yonex Badminton Hall Hardbrücke. The number of players on the waitlist one week in advance determines the number of courts booked. If you are on the waitlist but can no longer attend, please remove yourself as early as possible. Open to players of all skill levels. This session is for doubles with a relaxed and social focus. Ideal for casual play, improvement and meeting new players. Payment can be made via TWINT after the session.

Welcome to the Open Level Play Session. This session takes place every Saturday from 12:15 to 13:45 at the Yonex Badminton Hall Hardbrücke. The number of players on the waitlist one week in advance determines the number of courts booked. If you are on the waitlist but can no longer attend, please remove yourself as early as possible. Open to players of all skill levels. This session is for doubles with a relaxed and social focus. Ideal for casual play, improvement and meeting new players. Payment can be made via TWINT after the session.

**We'll have two meetings covering AI - this second one is for Positron** We will review which AI features are linked in for Positron, and how to use them. **Location:** The meetup will be at SPARK's ([https://annarborusa.org/](https://annarborusa.org/)) Ann Arbor site: [SPARK HQ (Ann Arbor)](https://urldefense.com/v3/__https://www.google.com/maps/place/Ann*Arbor*SPARK*Headquarters/@42.2792515,-83.7447708,17z/data=!3m1!4b1!4m5!3m4!1s0x883cae3effe193cb:0x5296a53db2a282bf!8m2!3d42.2792515!4d-83.7447708?hl=en-US__;Kysr!!HXCxUKc!3EEdBNXRJKknP6LCGkZetSuEsdtChFojQnOVitFUC5C0fyilqXEbiMstT9ajBR3Cw-55qoFkrElCjQvjMdTxUw$). There is on street parking, and parking at local structures. **This will be a hybrid meeting - the Zoom session starts at 6:30 PM.** **Time:** The doors will be open at 6:00, with pizza and beverages provided. We will have a meet-and-greet-and-pizza session, and then at 6:30 we'll have a presentation. **Zoom information:** https://us06web.zoom.us/j/86862937929?pwd=woa95D1r85dobjqxQ07NfBLNdTa9hc.1 Passcode: 705462 **If you can't get in, please call me at: 734 223-3307** **Document source:**

Come chat about Atlassian tools and best practices at the Nationwide Sunny Street Cafe and Breakfast is on Atlassian! Let's get the day started off with breakfast with your ACE Leaders! We're always excited to talk about Atlassian Products, share our knowledge and hand out swag! Come chat with us about new product news and anything you are working on within the Atlassian product stack. This is a great opportunity to come see what we are all about, hear new business news and share with other Atlassian users your questions and experiences. We'd love to see new and old friends come out to chat and learn about Atlassian! Agenda --- Moderators Kimberly Deal - Columbus Atlassian User Group Leader Kevin Stanley - Columbus Atlassian User Group Leader Hosted By Kimberly Deal, Atlassian User Group Leader Kevin Stanley, Chief Everything Greg Sprowls, Agility Lead --- Global Partner Atlassian (http://atlassian.com) Millions of users globally rely on Atlassian products every day for improving software development, project management, collaboration, and code quality. Partner Atlassian --- For over a decade, Atlassian customers have come together to network, share ideas, solve problems, and find new ways to use Atlassian products. Today, more than 15,000 people take part in Atlassian community events in more than 30 countries. --- Complete your event RSVP here: https://ace.atlassian.com/events/details/atlassian-columbus-presents-rise-and-shine-with-atlassian-downtownnationwide-22/.

The Fellowship of the Star Schema: Transforming OLTP Data for Power BI One does not simply build reports on OLTP data. Join us on an epic journey from the depths of raw, normalized tables to the shining halls of a well-modeled star schema fit for Power BI greatness. We will demystify the differences between OLTP and OLAP, walk through star schema vs snowflake (and why Power BI has a clear favorite), and show you the compression differences between normalized and columnar storage that will make you never look at an OLTP model the same way again. We will cover the different types of dimensions, when to use them, and how to handle Slowly Changing Dimensions without losing your mind. You will leave knowing exactly how to identify a bad model, how to convert OLTP data into a clean star schema, and how to forge relationships that rule them all. Whether you are a data wizard, a curious hobbit, or somewhere in between, your models will never be the same.

**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: Type Annotations with John Cassidy 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

Whether you've never done improv before, or you've done it for so long you knew Del Close on a personal level, or anywhere in between, come join us! Swing by *Gresso's* for the **Columbus Improv Comedy Meetup** for some fun and games! Tonight's a special one; this is "Long form" night! Most nights here at Improv Meetup, we play "short form" games, where the host has established rules that the players must adhere to. These scenes frequently do not tell a connected story and are focused on following those rules; games such as "Alphabet Game" where every next sentence needs to start with the next letter of the alphabet, or "Interrogation" where it's a guessing game. Tonight is focused on "long form", where we will see groups of people come up and do a sort of improvised play. There may be rules to the structure itself to adhere to, or it may be more free form, but doing this allows players to establish a shared world, and to establish characters and callbacks. While your average game may last 2-3 minutes, a long form set may last longer, and have 4+ people involved. This may be a more complicated night, but we will make sure you feel supported to try this out. Our meetup, which is central Ohio's longest running (and free!) weekly comedy event, brings the games (and occasionally different forms) for you to play in a safe, supportive, and compassionate environment. Not only is it a lot of fun, but you get to work on thinking faster on your feet, plus it's an excellent way to meet new people and make friendships that'll last a lifetime! Ask yourself if you want to join the **Columbus Improv Comedy Meetup**, and say "Yes, And" that you'll have fun!

**New 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 topic suggestions and people interested in presenting at our monthly meetings. To this end we've set up a survey form at [https://docs.google.com/forms/d/15eBKF1nQQ2XS5gzD4rvhVRHMBEj7lJtHuA9wXupS3Uc](https://docs.google.com/forms/d/15eBKF1nQQ2XS5gzD4rvhVRHMBEj7lJtHuA9wXupS3Uc)

Some trained COUNT volunteers work together once a month at RMH (http://www.rmhc-centralohio.org/volunteer.php) as Housewarmers (usually on the 1st Sunday from 1 – 5 PM). Some schedule other shifts at their convenience. You may try this out with less fuss by following a "Fast track" or go through the normal process. Fast track • Arrange a time to shadow a COUNT volunteer. Call Dave Nohle at 614-268-9558 (cell). • Show up and try it out. • Complete application, etc. later. Normal process • Complete an online application (http://rmhc-centralohio.org/volunteer/). • Attend orientation in advance. • At orientation you will complete forms agreeing to keep family/patient info private and allowing a background check and tour the facility. • Complete one training shift. Daily shifts are: morning 9 AM - 1 PM, afternoon 1 - 5 PM and evening 5 - 9 PM. • Schedule shifts online using the on the RMH scheduling system (http://www.volgistics.com/ex/portal.dll/?FROM=32895). The Ronald McDonald House (RMH) provides housing and meals for families with sick children. The Columbus RMH is the largest in the world with 137 rooms. COUNT has been volunteering there since May 2014. Housewarmers work with RMH guests to provide a home-like environment - greet, assist with family needs, answer phones, give tours, assist with checkin/checkout, prepare guest rooms after checkout, clean facility, laundry, restock supplies and staff the front desk. RMH Housewarmers volunteer at least one four-hour shift a month. All Housewarmers must complete an application and agree to a background check before they can be full fledged volunteers.