• Coin Mining Tycoon at the Rotterdam JUG

    Havenbedrijf Rotterdam

    Our second meetup of 2019: == Coin Mining Tycoon == Want to learn more about blockchain technology using a game and some Java programming? Join this interactive meetup! Group9 created a game named "Coin Mining Tycoon" and they host this workshop. The game uses blockchain technology and pushes the limits of the possibilities of modern hardware (we use Raspberry Pi Zero's to run the game!). Your task, as a starting tycoon, is to collect as much 'money' as possible. You do this by mining blocks with coins and creating the longest chain, using your *own* mining equipment (both hardware and software). Only coins that are part of the longest chain count towards the highscore. The one who has the most coins on the longest chain wins the game. There are of course several challenges that you must overcome. Participating tycoons can try to make their own longest chain, but also use other people's chain as a starting point. Smart tycoons build a more efficient mining algorithm, or start collaborating with other tycoons by creating a joint mining venture. Everything to get the longest chain with the most coins. Strategic tycoons can buy information (cheats/hints) that are useful when mining coins. However, this costs them expensive coins... Schedule: [18.00 – 18.30] Walk-in [18.30 – 19.00] Drinks and food (vegatarian options available) [19.00 – 21.30] Workshop: Coin Mining Tycoon [21:30 – 22:00] Drinks and chats This meetup will be an interactive session: !! Bring a laptop !! = Workshop: Group9 The game and the workshop is created by Group9: http://group9.nl/ = Food/drinks: OpenValue Rotterdam OpenValue Rotterdam, a new company in the region, will sponsor the food and drinks for this event. https://openvalue.nl/ = Location: Port of Rotterdam The location of this meetup will be the same as our first meetup, a building owned by the Port of Rotterdam (thanks for having us again!). Droogdokweg[masked] JL Rotterdam = RSVP now: There are just 30 spots available, so RSVP quickly, if you can't make it, be sure to give up your spot.

  • RotterdamJUG does Kotlin (Workshop)

    Lunatech Office

    2019, a new year, time to broaden the horizon and learn new skills. This meetup we're going to take a look at Kotlin, an upcoming JVM language that is slowly conquering the Java world. https://kotlinlang.org/ "Give a Java programmer a week of Kotlin, he/she will never go back" Schedule: [18.00 – 18.30] Walk-in [18.30 – 19.00] Drinks and pizza's (vegatarian pizza's available) [19.00 – 22.00] Kotlin workshop (Paulien van Alst) [22:00 - 22:30] Kotlin is for hipsters (Riccardo Lippolis & Jorrit van der Ven) This meetup will be an interactive session: !! Bring a laptop !! We'll start off with a hands-on Kotlin workshop by the excellent Paulien van Alst from OpenValue. (https://twitter.com/PaulienVanAlst). = Kotlin workshop (Paulien van Alst) In this workshop, you will build a simple webservice in Kotlin and hopefully see how easy it can be to write new business functionality. No Hello, World app guaranteed! You will be developing a true microservice with real business rules. The workshop offers you to jump in at different levels: from totally new to Kotlin to the more experienced ones. The covered topics are (data) classes, collections and types (type alias), inheritance, interfaces and extension functions, coroutines and Kotlin’s interoperability with Spring. = Kotlin is for hipsters (Riccardo Lippolis & Jorrit van der Ven) Most developers like using cool, shiny, new technologies. But at the same time, we embrace the 'known' older technology stacks when creating software which will run in production, and for good reason! At the Port of Rotterdam we decided to take a leap of faith and embrace our inner hipsters. Unhindered with any prior experience, we started developing our applications using Kotlin. In this short talk, we will share our experiences with developing in Kotlin for a few months. Hopefully, we will enthuse you to make the same decision! = Host: Lunatech Also, many thanks to this events new host: Lunatech Lunatech is also sponsering the food and drinks, awesome job. = RSVP now: There are just 50 spots available, so RSVP quickly, if you can't make it, be sure to give up your spot.

  • Microservices at the Port of Rotterdam

    Havenbedrijf Rotterdam

    During this first Meetup we'll officially start the RotterdamJUG. Schedule: [17.30 – 18.00] Walk-in [18.00 – 19.00] Drinks and pizza's, official kick-off [19.00 – 20.30] Microservices at the Port of Rotterdam (Roy van Rijn) We'll start by digging into pizza's and celebrate the new JUG. Next we can brainstorm on where to take it from here. Finally I'll give a talk about our (Java) project at the Port of Rotterdam. I'll talk about the problems we've faced, the solutions we've tried, how we went from a very old monolith to the current microservices environment. Drinks during the meeting are sponsered by: Made with Denjin (http://madewithdenjin.com/). There are just 25 spots available right now, so RSVP quickly, if you can't make it, be sure to give up your spot. * If you have any dietary restrictions, send a message! ** If you or your company want to sponsor the pizza's, send a message!