---
title: "This week's Ruby news, issue 215"
publication: "Ruby Weekly"
issue: 215
published_at: "2014-10-02"
canonical_url: "https://rubyweekly.com/issues/215"
---

This week's Ruby news, issue 215

Matz on mruby, writing a DSL in Ruby, Rails 4.2.0-beta 2, Active Job, and more.[Read this e-mail on the Web](http://rubyweekly.com/issues/215)

Ruby WeeklyIssue 215 — October 2, 2014

YouTube[mruby: AltRuby (video)](https://www.youtube.com/watch?v=5FLrKg-b6o8list=UUwoOpKfkyCQHW562hXXQAGg)At the recent Barcelona Ruby Conference 2014, Matz gave a 35 minute talk about a little of Ruby's history and then mruby, a lightweight and embeddable Ruby implementation that Matz and others are currently working on.


ZenPayroll Engineering[Benefits of Writing a DSL in Ruby](http://engineering.zenpayroll.com/benefits-of-writing-a-dsl/)A look at building a simple internal DSL in Ruby and why Ruby shines for the task with its variety of metaprogramming capabilities.


Riding Rails[Rails 4.2.0 Beta 2 Released](http://weblog.rubyonrails.org/2014/9/29/Rails-4-2-0-beta2-has-been-released/)It seems the final release of 4.2 is just around the corner. I’ve been using the early beta and it feels very solid, so it’s a good time to check 4.2 out if you haven’t yet.


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[![Codeship\](http://s3.amazonaws.com/nlga/uploads/item/image/22122/125.png)](https://www.codeship.io/?utm_source=RubyWeekly=newsletter=CooperPress)


Engine Yard[Getting Started With Active Job](https://blog.engineyard.com/2014/getting-started-with-active-job)While developers have been using job queues and background job processes with Rails for years, Rails 4.2 brings built-in support for executing jobs in the background through Active Job.


Thoughtbot[IO in Ruby](http://robots.thoughtbot.com/io-in-ruby)A look at using Ruby to interact with IO streams through the IO class. Nothing particularly advanced here but if you never do any system IO work, it’s a good primer.


In brief

Curated by [Peter Cooper](https://twitter.com/peterc) and [Glenn Goodrich](https://twitter.com/ruprict), and published by [Cooperpress](https://cooperpress.com/).
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