1. Building Reusable Object-Oriented Systems: Composition

  2. Building Reusable Object-Oriented Systems: Modules

  3. Building Reusable Object-Oriented Systems: Inheritance

  4. Acceptance Tests with Subdomains

  5. Priming the pump

  6. Elixir for Rubyists

  7. HyperLogLogs in Redis

  8. Fundamentals of Test-Driven Development, Now on Upcase

  9. thoughtbot Ruby Open Source is Ready for Rails 5

  10. How To Reduce a Large Heroku Slug Size