Deep Reinforcement Learning

We are happy to announce our next meetup that will be held physically at [XM](https://www.xm.com/), in Athens. After the talk there will be time for Q&A, food and networking. **📍 Location 📍** Michalakopoulou 80 street, 1st floor. Attendees should register with their meetup name at the entrance **⏰ Date & Time ⏰** 12th of February, 19:00 **🔗 Prerequisites & Target audience 🔗** The talk is aimed at developers who are interested in C++. **🇬🇷 Language 🇬🇧** The talk will be in Greek unless there are non-Greek speakers in the audience. **🍀 JetBrains license ruffle 🍀** At the end of the event we will ruffle out 2 yearly licenses for a JetBrains IDE. **📃 Agenda 📃** 19:00 - "Intro, Agenda of meetup" by Dimitris Platis 19:05 - A message from our sponsor - XM 19:10 - "From RAII to Substructural Types and Beyond" by Iosif Arvanitis 20:10 - Pizza, kindly offered by XM 🍕 **🎤 About the talk 🎤** In modern C++ resource management, RAII and move semantics have become ubiquitous. In this talk, we will take a closer look at the underlying mechanisms underpinning the advantages of using these features, and the theory that formalizes them. We will then discuss the powerful implications of the theory and how it influences the wider programming language world. We will move beyond the basics of RAII to explore: \- A primer on substructural types \(affine\, linear\, etc\) \- Connecting substructural types with C\+\+ concepts \(e\.g\. \`unique_ptr\`\) \- Substructural "superpowers": race freedom\, static guarantees and more Under this framework, modern C++ developers can better grasp new language features, design safer APIs, and appreciate influential patterns from other programming languages. **🎤 About the speaker 🎤** Iosif Arvanitis is a Computer Engineering undergraduate at the University of Patras, with a focus on systems programming, concurrent-distributed systems and programming languages. He is currently active in academic research, as well as web development projects.

Θέλετε να βελτιώσετε τις ικανότητές σας στην ομιλία μπροστά σε κοινό; Θέλετε να ξεπεράσετε το τρακ της δημόσιας ομιλίας; Ελάτε στην επόμενή μας συνάντηση Toastmasters! Δημιουργούμε όλοι μαζί ένα ανοικτό, φιλικό και ευχάριστο περιβάλλον, στο οποίο εξασκούμε τον δημόσιο λόγο και αξιολογούμε ο ένας τον άλλον. Εφαρμόζουμε το δοκιμασμένο πρόγραμμα των Toastmasters που έχει ιστορία άνω των 100 ετών και εφαρμόζεται στην Ελλάδα από το 2005. Περισσότερες πληροφορίες στο: https://web.facebook.com/profile.php?id=61556529585790 Συναντιόμαστε 2 φορές τον μήνα, την δεύτερη και τέταρτη Πέμπτη κάθε μήνα, από Σεπτέμβριο μέχρι και Ιούλιο (εκτός περιόδων Χριστουγέννων-Πρωτοχρονιάς & Πάσχα). This will be a Greek-speaking meeting. For our English-speaking meetings please see our page at https://www.meetup.com/ethos-pathos-logos-toastmasters-club.

Jump in our whtsapp group,introduce yourself, start connect,put your ideas and lets hangout and make friends https://chat.whatsapp.com/EDf4HaUjK4gLMMQeiOsllt Athens, let’s make Thursday night about connection that actually matters. This is a social language exchange designed for real conversations, cultural exchange, and meeting new people—set inside the warm, lively atmosphere of Mint Bar ✨ Whether you want to practice English, Greek, Spanish, French, or simply meet people from around the world, this space is built for easy, natural interaction. No pressure. No judgment. Just conversation, laughs, and good energy. 🌊 How the Night Works • We gather around big shared tables 🪑 • Start with small, natural conversations 💬 • Every 15–20 minutes, people naturally rotate and meet someone new 🔄 • Share languages, cultural stories, travel experiences, or ideas 🌍 • Some people dance 💃🕺, some relax 😌, some do both • Stay as long as you like, move at your own pace ✨ The structure is light and flexible—enough flow to keep things dynamic, enough freedom to keep it relaxed. This is conversation in motion. 🤝 Who You’ll Meet Locals, expats, travelers, creatives, and curious minds ✨ People who enjoy learning, sharing, and connecting beyond surface-level small talk. I’ll be there all night 👋 Introducing people, connecting groups, and keeping the energy flowing ⚡ Coming alone? Perfect. This event is designed so solo guests blend in easily and leave with new connections 🤍 🍷 Community Drink Deals • Sangria — €3 🍷 • Shots — €2.5 🥃 • Cocktails — €7 🍸 • Beer — €5 large / €4 small 🍺 Affordable, social, and stress-free. 🎶 Music & Atmosphere Upbeat enough to keep the energy alive 🎧 Soft enough to actually talk 💬 A warm, inclusive vibe where people—not noise—are the focus ✨ 📍 Event Details 📅 Every Thursday 🕣 20:30 – 00:00 📍 Mint Bar → https://maps.app.goo.gl/thKjPZDwyEvegVWD9 🎟 Entry: FREE (just say you’re with the community) 🌟 Why This Night Works • Meet people from all over the world 🌍 • Practice languages through real conversation 🗣️ • New faces every week, familiar energy every time 🤍 • A social setting that feels easy, open, and human • Start your night with connection—and let it unfold naturally 🔥 💫 Final Thought Thursday nights don’t have to be random. They can be social. They can be intentional. They can be fun and meaningful. Come for a drink 🍸 Stay for the conversation 💬 Leave with stories, smiles, and new friends 🤍🔥 Thursday = Mint Bar Social & Language Exchange See you there. Mamad – The organiser of Athens locals&Travellers events Whtsapp 00306949528622 Follow us on instagram And make us grow Thanks in advance https://www.instagram.com/athenslocalstravellers?igsh=MWM4MTh4c2p5M3NxdA== travel, meetup night, night out, city adventures, bar night, social event, friendship, network, mingle, explore city, evening fun, solo night, group meetup, local hangout, international friends, nightlife lovers, weekend fun, party vibes, cocktails night, live music, clubbing, coffee meet, brunch meetup, cultural events, street tours, urban life, nightlife adventure, new connections, chat night, fun night, singles meetup, evening drinks, meet & greet, food tour, sightseeing, art events, music night, rooftop bar, sunset party, festival, theater night, karaoke night, games night, pub crawl, city nightlife, travel buddies, hangout night, casual dating ταξίδια, meetup βράδυ, νυχτερινή έξοδος, περιπέτεια πόλης, βραδιά μπαρ, κοινωνική εκδήλωση, φιλία, δικτύωση, γνωριμίες, εξερεύνηση πόλης, βραδινή διασκέδαση, μόνος βράδυ, ομάδα meetup, τοπικό hangout, διεθνείς φίλοι, λάτρεις της νυχτερινής ζωής, Σαββατοκύριακο διασκέδαση, vibes πάρτι, βραδιά κοκτέιλ, ζωντανή μουσική, κλαμπ, καφές meetup, brunch meetup, πολιτιστικές εκδηλώσεις, περιήγηση δρόμου, ζωή στην πόλη, νυχτερινή περιπέτεια, νέες συνδέσεις, βραδιά κουβέντας, διασκεδαστική νύχτα, meetup σινγκλς, βραδιά ποτών, γνωριμία & χαιρετισμός, food tour, αξιοθέατα, εκδηλώσεις τέχνης, μουσική βραδιά, ταράτσα μπαρ, πάρτι ηλιοβασιλέματος, φεστιβάλ, θέατρο βραδιά, karaoke βραδιά, παιχνίδια βραδιά, pub crawl, νυχτερινή ζωή πόλης, ταξιδιωτικοί φίλοι, hangout βράδυ, casual ραντεβού

📸 A Photography Course in English • Duration: 4 months • Starts: February 2026 • Meeting Point: Every Friday, 7–9 PM • Conducted entirely in English • Learn by studying famous photographers • Explore key photography concepts & techniques • Participate in guided photo walks • Receive personal feedback on your work • Build a deeper photographic vision step by step 📍Acheon 21, Petralona, Athens More info: 📞 00306977261219 📩 kat.roumelioti4@gmail.com #blackboxphotography

**Get ready to hop from bar to bar, sip on unlimited drinks, and dance the night away at the Athens Party Pub Crawl - it's gonna be legendary!** ## Highlights * Feel the rush of excitement of **meeting new people** and dancing the night away * Opt to include an **open bar for 1 hour**, including beer and wine or long drinks * Be led by **experienced and fun local hosts** and explore Athen's nightlife * **Dance, drink, and mingle** with fellow party enthusiasts from around the globe * Breeze past long lines at the nightclub and relax knowing **entry is covered** ## Full description Experience the ultimate night in Athens with 1 FULL HOUR of Unlimited Drinks (8€ - 35€+ Value!)\*, free shots, and Free Nightclub Access (10€ Value!) while meeting nightlife lovers from around the world! Get ready to celebrate like never before with the Best Pub Crawl in Athens! Embark on an epic pub crawl through Athens' hottest nightlife spots. Dance, drink, and mingle with fellow nightlife enthusiasts from around the globe. Enjoy an hour of unlimited drinks and free shots at each\* venue, while our energetic party hosts lead you through the night. Skip the lines and get access to the city's best clubs. Book now and make your night in Athens unforgettable! **\* We offer three ticket options:** 1\. The **Sober Owl Ticket**: Does not include an open bar \| Includes: A Free Shot at each Venue \- Drink Discounts \- Free Entrance & Skip the Line to Club 2\. The **Tipsy Owl Ticket**: Includes 1 hour of unlimited beer or wine\. \| Also includes: Free Shot at 1st & Last Venue \- Drink Discounts \- Free Entrance & Skip the Line to Club 3\. The **Drunken Owl Ticket**: Includes 1 hour of unlimited long drinks \(Gin/Vodka/Rum/Tequila\)\, beer\, and wine\. \| Also includes: Free Shot at 1st & Last Venue \- Drink Discounts \- Free Entrance & Skip the Line to Club ## Includes * Local Experienced event host(s) * Bar crawl: Visit 2 Bars & 1 Nightclub * 1 hour of unlimited drinks (depending on ticket option chosen) * 2-3 Free Shots (depending on ticket option chosen) * Discounts in Cocktails (1st Venue) * Skip-the-line & Free entry to Nightclub ## What to bring * Your Best Mood 🤩 * Comfortable shoes for dancing 🕺💃 * Camera * Charged Smartphone ## Not allowed * Intoxication ## Know before you go * This is an Adults only event. 18+ years old ## Booking Terms & Conditions - Code of Conduct By participating in any event (including pub crawls) organised and hosted by Athens Party Pub Crawl, you the participant & every person your booking is consisted of, agree to the following terms and conditions without restriction: [https://athenspartypubcrawl.com/terms-and-conditions-code-of-conduct](https://athenspartypubcrawl.com/terms-and-conditions-code-of-conduct "https://athenspartypubcrawl.com/terms-and-conditions-code-of-conduct")

📸 A Photography Course in English • Duration: 4 months • Starts: February 2026 • Meeting Point: Every Friday, 7–9 PM • Conducted entirely in English • Learn by studying famous photographers • Explore key photography concepts & techniques • Participate in guided photo walks • Receive personal feedback on your work • Build a deeper photographic vision step by step 📍Acheon 21, Petralona, Athens More info: 📞 00306977261219 📩 kat.roumelioti4@gmail.com #blackboxphotography

**Founders Running Club** (FRC) brings founders, investors, tech, creative people and startup enthusiasts together for weekly easy runs and networking. We like to be comfortable when we run and finish with coffee and conversations. Choose your pace or follow a pacer—pets, friends, family, are welcome. More about FRC global: 🗓️ Launched in San Francisco, July 16, 2022 🌍 Now in 55+ cities 📅 Running + Networking events + Community **Join the community** [http://foundersrc.com/chats](http://foundersrc.com/chats) [http://instagram.com/frcathens](http://instagram.com/frcathens) **Stay updated**: Instagram [http://instagram.com/foundersrc/](http://instagram.com/foundersrc/) LinkedIn [http://linkedin.com/company/foundersrc/](http://linkedin.com/company/foundersrc/) Podcast [http://podcast.foundersrc.com/](http://podcast.foundersrc.com/) Strava [http://strava.com/clubs/foundersRC](http://strava.com/clubs/foundersRC) Website [http://foundersrc.com/](http://foundersrc.com/)

💘 NEW IN ATHENS? SINGLE? DONE WITH SWIPING? This one’s for expats & digital nomads 👀✨ ✨ Valentine’s Night in Athens ✨ A social night made for meeting people in real life — no pressure, just good vibes. 📍 Rude Lord Bar Kolokotroni 11, Athens 🕘 From 9PM 🎧 DJ Yiorgos Zafeirakos 🍹 VALENTINE SPECIAL Try the Love Potion — a one-night-only drink made just for Valentine’s Night 💕 Come solo (most do). Meet international people. Talk. Laugh. Dance. Connect. ✨ FREE ENTRY — just support the bar with a drink 🍸 🔥 Limited spots 📩 DM us on Instagram or message Nomad Hub Greece on Facebook to save your spot. Skip the apps. Be there. 💘

💘 NEW IN ATHENS? SINGLE? DONE WITH SWIPING? This one’s for expats & digital nomads 👀✨ ✨ Valentine’s Night in Athens ✨ A social night made for meeting people in real life — no pressure, just good vibes. 📍 Rude Lord Bar Kolokotroni 11, Athens 🕘 From 9PM 🎧 DJ Yiorgos Zafeirakos 🍹 VALENTINE SPECIAL Try the Love Potion — a one-night-only drink made just for Valentine’s Night 💕 Come solo (most do). Meet international people. Talk. Laugh. Dance. Connect. ✨ FREE ENTRY — just support the bar with a drink 🍸 🔥 Limited spots 📩 DM us on Instagram or message Nomad Hub Greece on Facebook to save your spot. Skip the apps. Be there. 💘

Book your place at www.basketble.com Time: 17.00-18.30 (Athens Time) Duration: 1.5 hours Price: 10 Euros (payment at the basketball court) Facilities: Underground parking Game Setup (depending on the number of players) 3 teams of 5 players playing against each other Winner stays on but maximum 2 games 7 minute games You can play in the same team with your friends or we will place you in a team Come Out and Play!

Book your place at www.basketble.com Time: 17.00-18.30 (Athens Time) Duration: 1.5 hours Price: 10 Euros (payment at the basketball court) Facilities: Underground parking Game Setup (depending on the number of players) 3 teams of 5 players playing against each other Winner stays on but maximum 2 games 7 minute games You can play in the same team with your friends or we will place you in a team Come Out and Play!

Join us for an hour of writing! We’ve discovered that it’s strikingly helpful to write with other writers. Be it a book, blog, script, essay, dissertation, resume, melody, poem or just plain work stuff, you are invited to write it with us. No one will see what you've written or give you unsolicited advice. Instead of just thinking about writing, come and get some real writing done. SCHEDULE: 11:00 - quick intros. 11:15 - timer starts: write for 1 hour. 12:15 - (the end) chat / take off / keep writing / socialising. Writing is very solitary. Connecting (and sometimes even commiserating) with other writers is a cool thing. BEING LATE IS OKAY: just show up and get settled, then check-in with me after the session. If you were on time, please be willing to make room for the friendly latecomer. Happy writing and I look forward to seeing you at To Theatron! What Should I Bring? Whatever you need to be able to write! Bring earbuds/earplugs if you want to block the cafe’s overhead music or the occasional conversation by other patrons. Ideally come with your laptop fully charged in case there are not enough plugs for everyone. Other Important Details: -Theatron is close to the newly-opened metro station Dimotiko Theatro. The tram also stops right outside, and there are several bus stops nearby. -There is a parking service nearby on Kountouriotou 137 if you are unable to find a parking space. -Please thank our hosts by purchasing something.

Join the Columbus AI community for our quarterly gathering — a casual, community-focused evening where everyone has a chance to share, learn, and connect. These open mic–style events give anyone in the community up to **5 minutes** to present a project, share a tool, pose a question, or offer a perspective on the evolving AI space. No slides required — just a welcoming space to exchange ideas and keep the local AI conversation moving. If you’d like to take the stage, message **Chris (the organizer)** with a **title and short description** of what you’d like to share. Whether you’re deep in the field or just getting curious, come connect with others building and exploring AI in Columbus. Sponsored by [Transform Labs](https://www.transformlabs.com/services)

NFT's are here to stay folks! This is a group for like minded people interested in understanding, leveraging, using, creating for, profiting from, trading too i suppose, NFT's.. everything around them, complexity, fear and exploits, best practices and more. **PLUS** This group will talk AI ART tools, techniques, artists, video, audio, prototypes and more in the AI assisted production space- ART specifically, but we can get into any aspect of some of the cooler things happening in AI in general.

If you enjoy knitting, crocheting, working with yarn, this is the group for you. Meet new friends, bring your projects, learn from others.
We normally meet a few times a month during the week from 6-8pm. We will occasionally meet on weekends during daytime hours.

**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

This meetup is a beginner-friendly, hands-on workshop focused on building shaders in Unity using Shader Graph. Instead of slides or theory-heavy lectures, we'll build real shaders together step-by-step. The format is structured but interactive. You'll watch a quick demo, then build each shader yourself with guidance. By the end, you'll have created multiple shaders you can immediately use in your own projects—and understand how to make more. **What to Expect:** * Build 4–5 complete shaders from scratch * Color tints, snow accumulation, scrolling water, dissolve effects, and more * No prior shader experience required * Checkpoint files provided if you fall behind * Resources for continued learning All experience levels are welcome. Whether you've never opened Shader Graph or just want to fill gaps in your knowledge, this is a supportive space to learn by doing. **Food and drinks provided. Join us to learn, build, and level up your shader skills.**