1. Special Sale on Upcase and RubyTapas

  2. Update Your Gems Early and Often

  3. Composition vs Inheritance

  4. Building Reusable Object-Oriented Systems: Composition

  5. Building Reusable Object-Oriented Systems: Modules

  6. Building Reusable Object-Oriented Systems: Inheritance

  7. Acceptance Tests with Subdomains

  8. Priming the pump

  9. Elixir for Rubyists

  10. HyperLogLogs in Redis