Ruby Weekly
Issue 281 — January 21, 2016
David Heinemeier Hansson
DHH reflects on how Rails continues to remain a powerful force in the world of Web development through eight core values that make up what he calls the Rails Doctrine.
Numerous projects and communities have adopted a CoC or had discussions about them recently. Now it’s Ruby’s turn and, well, it’s gotten complicated.

Zachary Scott
mruby is a lightweight, embeddable Ruby implementation. The author says “it will play a big role in the future of Ruby” and explains why. I agree with him.

AppSignal  Sponsored
AppSignal helps you improve the stability and performance of your applications. And if the shit does hit the fan, we'll give you the tools and insights to fix it. It's free for 30 days. Sign up for instant peace of mind.


David Heinemeier Hansson is now sporting a new, cleaner design, and Rails has a new logo too.

Ross Kaffenberger
Two new Enumerable instance methods were added, grep_v and chunk_while, both variations of other Enumerable methods.

Damir Svrtan
Lots of tasty stats and insights here. Fewer gems were created or updated in 2015 than 2014 (the first fall ever), but downloads are up.

Jesus Castello
I knew all but one of these but I love poking around with this stuff. I’m sure you’ll find a new tidbit here, even if it’s not useful for everyday coding.


  • Full Stack Engineer Ruby on Rails at Babbel (Berlin)Join our vibrant international team from over 20 different nationalities to change how millions of users worldwide learn languages. See what we can offer you on top of a lively startup atmosphere and great company benefits. Babbel
  • Ruby Developer at ComposedComposed is an innovative music streaming service that helps people discover the classical music they love. We are seeking a Ruby developer to join our multidisciplinary team, develop our API systems, and support additional platforms such as Sonos. Composed
  • Ruby Skills are in demandIndeed Prime is an elite new program from that presents in-demand tech talent like you to top employers. Indeed Prime opens the door to exciting career opportunities with one simple application. Join today.

In brief