This week's Ruby news, issue 316

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Jobs

• Sr. Rails & Front End Engineering | Remote - North AmericaAha! is looking for experienced Ruby on Rails, Javascript & front-end engineers to develop rich interactive experiences in React with a Rails backend. Aha! is the #1 tool for product managers to plan strategy & roadmaps. Aha!
• Senior Ruby and Fullstack Engineer (Wash. DC or São Paulo, Brazil)Passionate about software development? Spree Commerce is looking for a Senior Ruby and Fullstack Engineer to join the team. Come and help us build the technology powering the next generation of ecommerce. Spree Commerce
• Stop wasting time - know what you'll earn before the interviewOn Hired, sign up in 10 minutes and get offers from top companies like GitHub, Uber, & Stripe. Engineers get an average of 5 offers on the platform in 1 week. Hired.com

In brief

• London Ruby Unconference Registration Now Open (Oct 22) news 
  London Ruby Unconference
• A Summary of RubyKaigi 2016 news
  Ruby’s ‘home’ conference took place in Japan earlier this month. 
  Aaron Lasseigne
• $5000 fixed-cost upgrade of legacy 2.x/3.x Rails apps to Rails 5 
  Upgrading a legacy rails app is a tedious task; let the specialists at RubyAppCare handle it for you. 
  Rubyappcare   Sponsored
• A Review of Immutability in Ruby tutorial
  The options available to Rubyists regarding immutability. 
  Tom Dalling
• How To Change the View Path of a Controller in Rails tutorial 
  Weston Ganger
• Delegation with BasicObject tutorial 
  Ray Zane
• Microservices using Rails, HTTP and RabbitMQ tutorial 
  Santosh Wadghule
• Fun with ObjectSpace: Memory and Aliased Methods tutorial
  Count objects in memory, check the size of an object in memory, and find aliased methods. 
  Jesus Castello
• Speed Up Allocating ActiveRecord Objects with LightRecord tutorial 
  Pavel Evstigneev
• Some Notes on Using Interactors in Rails tutorial 
  Ivan Shamatov
• Better File Uploads with Shrine: Attachment tutorial
  An overview of Shrine’s high-level interface for attaching uploaded files to model instances. 
  Janko Marohnić
• Track Rails Performance Issues with Skylight tutorial
  An online tool for profiling Rails, Sinatra, and Grape apps. 
  Ilya Bodrov-Krukowski
• JRuby 9000 Last Year, Today, and Tomorrow video
  JRuby core team member Thomas Enebo talks about how JRuby’s latest release went and what the focus is for further improvements. 
  Thomas E Enebo
• Writing A Gameboy Emulator in Ruby video 
  Colby Swandale
• Ruby Facets: A New Mini Ruby News Podcast podcast 
  Oliver Lacan
• Efficient and Thread-Safe Objects for Dynamically-Typed Languages story
  An academic paper looking at another possible approach for concurrency in Ruby, based on work with JRuby and Truffle, a language implementation framework. 
  Daloze, Marr, Bonetta, and Mössenböck
• Comparing wkhtmltopdf to Prawn for Generating PDF opinion
  How the pure Ruby PDF generation library stacks up in terms of speed, memory and usability. 
  Josef Strzibny
• A Definition of Magic: Implicitness without Understanding? opinion 
  Tom Dalling
• Raising Errors is a Developer Feedback Mechanism opinion
  Use exceptions, paired with TDD, to tell the developer what happened and what to fix. 
  Tom Dalling
• Announcing Gemnasium Enterprise Beta: Register now to get it soon tools
  Run Gemnasium Enterprise behind your firewall and find security issues in your dependencies. 
  Gemnasium Enterprise   Sponsored
• Array#collapse: A C Extension Alternative to flatten.compact or flatten.map code 
  Alex Moore-Niemi
• pgslice: Easy Postgres Partitioning code
  Works for both new and existing tables, with no downtime and minimal app changes. Used at Instacart. 
  Andrew Kane
• Pageflow: Multimedia Story Telling for The Web code
  Built around a Rails Engine 
  Codevise Solutions Limited