[heartbreak]

Practical Object-Oriented Design in Ruby by Sandi Metz.

http://www.poodr.com/

[qume]

Thanks. Rubiest here for a decade and hadn't heard of it.

[rubyfan]

Same. I’ve seen Sandi speak and had a beer with her at Goruco like 10 years ago. Great speaker to be sure.

I’ve never encountered anyone as passionate as @pka suggests. Perhaps POODR is popular where they work but it’s far from universal amongst rubyists.