The grammar of graphics: demystifying data visualisation with d3
Alastair Dant is an experienced software developer, focused on interactive news and visual journalism. Now at The New York Times, he escaped the world of enterprise Java to record the sounds of cities on interactive maps, develop a popular cartoon monster game and build an award-winning team at the Guardian.
Visualizing Garbage Collection in Rubinius, JRuby and Ruby 2.0
In this talk we’ll dive into Ruby internals and take a close look at an ugly topic: garbage collection. How do these Ruby VM’s allocate memory for new objects? How do they identify unused objects? How do they reclaim memory from garbage objects, allowing it to be used again?
You can learn a lot about someone from their garbage. Using a series of diagrams, we’ll visually compare and contrast the complex algorithms these very different Ruby implementations use. What computer science research is behind each garbage collector? We’ll also look at the GC changes planned for the upcoming Ruby 2.1 release.
Pat Shaughnessy is a Ruby developer working at McKinsey & Co., a global management consulting firm. Author of Ruby Under a Microscope, Pat loves diving into the details of a technology, learning how it works, and then explaining it in simple terms that everyone can understand. Pat’s blog articles and conference presentations have been featured multiple times on the Ruby Weekly newsletter, the Ruby5 podcast and the Ruby Show.
Cameron Cundiff discusses accessibility issues, how to triage them and how to fix them.
Slides are also available.