A presentation at Saint-P RubyConf in in St Petersburg, Russia by Vladimir Dementyev

Ruby was designed to make programmers happy. One of the features that makes it possible is a comprehensive metaprogramming tooling.

What is metaprogramming? How is it implemented in Ruby?

Let’s take a look under the hood of the simplest meta-technique–method_missing–and discover what lies behind it.

And to make this investigation more meta-exciting we’ll try to re-write it from scratch but in Ruby! So, don’t be afraid of C code)


The following code examples from the presentation can be tried out live.


The following resources were mentioned during the presentation or are useful additional information.

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