Speakers:

Rafael Caricio - Push your best and pull improvements

This open source enthusiast flew directly to Poland from hot Brazil. Rafael is an avid Python programmer and seems to be attracted by interesting events. DjangoDash? Node Knockout? Rails Rumble? You name it. He helped with open-source Thumbor (loved by Square or Le Figaro), Provy, a provisioning tool for Python, alternative to Puppet or PIP, Python package management tool. And it’s just a beginning of the list of Rafael’s deeds.

Jan Stępień - A bazilion of things YARV has to do before your code gets executed

During this short voyage through the guts of MRI's virtual machine I'm going to show what is happening behind the scenes of the execution of Ruby.

Why modifying a single method causes plenty of work to get wasted? Does MRI know the answer to the Ultimate Question of Life, the Universe, and Everything?
Why do we have goto in Ruby? Why should I even care about what is happening under the hood? Answers to these academic, impractical and utterly fascinating questions will be presented during this talk.

A programming languages polyglot and your fellow geek born and raised in the arguably picturesque city of Warsaw. Graduating with MSc in Computer Science from Warsaw University of Technology in early February 2013. When in front of the keyboard he's most probably juggling with bits of Ruby, C, Clojure and Haskell. When offline, he can be found outdoors; either preparing for the next marathon in forests surrounding Warsaw or wandering with a way too big backpack somewhere in the Carpathian wilderness.