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We aim at promoting all the aspects of the Ruby programming language and at fostering a vivid Ruby community in the Amsterdam region.

Next Meet-Up

🎤 Talks & Drinks

Tuesday, April 16, 2019 - 18:00h

Catawiki Trompenburgstraat 2C · Amsterdam

Dear Ruby friends,

We're doing this again! An exciting meetup where you can learn more about Ruby. Think you know the basics? Then let's dive deeper.

We're excited to invite you for two inspiring talks, pizza and drinks. Sponsored and hosted by Catawiki (in their new office!) ❤️


18:00 Doors open 🍻 + 🍕

19:00 Jeff Kreeftmeijer - Metaclasses in Ruby

19:30 Break

20:00 Ahmed Shahin - What to watch out for when building Middleware

20:30-21:30 Networking and drinks


Jeff Kreeftmeijer - Metaclasses in Ruby

Jeff is a developer at AppSignal in Amsterdam. He's working with Ruby (and Elixir) on a daily basis and writes educational articles for the AppSignal's Ruby and Elixir newsletters.

Through examining metaclasses, we'll learn how class and instance methods work in Ruby. Along the way, discover the difference between defining a method by passing an explicit "definee" and using class << self or instance_eval. Let's go!

Ahmed Shahin - Rack middlewares: The Ins and Outs

Ahmed is a Software Engineer at YoungCapital, he will give us a short talk about Rack middlewares: How powerful they are, their usage with web frameworks such as Rails, and how-to build your own middleware, and things to take into account while you are building your custom middleware.

See you there & bring a colleague! ❤️

Arno, Floor, Tom & Rayta

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