Ruby Weekly
Issue 239 — March 26, 2015
Henry Chinner
A tutorial on creating a simple feed-forward neural network that can classify hand written digits. Focuses on implementation rather than theory.

Jamis Buck
Beautifully described as ‘a few curious Rubyisms of dubious use, which may yet be worth knowing about’ by a very long-time Rubyist.

Jeroen van Baarsen
It’s not only RailsConf that’s around the corner, Rails 5.0 is too. Jeroen recaps a few of the things we should expect.

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Riding Rails
After four release candidates, so you should be safe to go!

The Hybrid Group
Playing with robots isn’t just for Node developers. Artoo is a modern robotics framework with support for 15 different platforms.

Will Jessup
Something you need to do at least once in your life.

Nick Gauthier
Docker provides a way to ‘containerize’ services, but you can also use it for testing a Rails app within a consistent, predictable environment (ideal for parallel testing).


  • Senior Full-Stack Engineer using Ruby on Rails (Technical Lead) at BabbelWith up to 120,000 downloads per day and more than 8,000 hours of language learning content, Babbel the market leading online-learning app, is looking for a full-stack Ruby engineer. Babbel (Lesson Nine GmbH)
  • Senior Rails Developer (f/m) at Drooms GmbHWe are looking for excellent developers with deep domain knowledge, plenty of hands-on experience, a "just do it" attitude, and a passion for building awesome stuff and a desire to disrupt industries. We like to work with flat hierarchies and a great sense of teamwork. Drooms GmbH
  • Freelance with Companies like Airbnb, IDEO JPMorganWork on special projects with great companies through Toptal. Set your weekly/hourly rate, and work from anywhere in the world as an elite HTML5 developer. See if you have what it takes. TopTal

In brief