This week's Ruby news, issue 286

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In brief

• Nordic Ruby Back for 2016; Early Bird Tickets Now on Sale news 
  Nordic Ruby 2016
• Rails 5 Makes belongs_to Associations 'Required' by Default newstutorial
  But you can opt out if you need to.  
  Abhishek Jain
• Private Classes in Ruby tutorial
  This never occurred to me before - interesting idea.  
  Robert Pankowecki
• How to Prepare Yourself for Frozen String Literals and Not Lose Performance tutorial 
  Alexander Dymo
• Put Your Finger on Triggers in Rails with HairTrigger tutorial
  Create and manage database triggers in Rails in a concise and database agnostic way.  
  SitePoint
• Using Docker for an Existing Rails Application tutorial 
  Chris Stump
• Struggling Towards Reliable Capybara JavaScript Testing tutorial 
  Jonathan Rochkind
• How to Write Your Own RSpec Retry Mechanism tutorial 
  Tom Van Eyck
• How to Use a React DateTimePicker with Rails Forms tutorial 
  Cathy Zoller
• Using Markdown with the 'kramdown' Library and Tools tutorial 
  Thomas Leitner
• Do You Know a Neglected Rails App? 
  Does your Rails app not get the attention it deserves? Neglected Rails apps become harder to maintain and upgrade. Sign up to CodeCare and get fixed price ongoing upgrades and improvements.  
  Reinteractive   Sponsored
• Side Effects of Using .first_or_create! at Scale in Rails opinion 
  Adrian Serafin
• Inject As A Fundamental Building Block opinion 
  Igor Šarčević
• How Elixir’s Ecto differs from Ruby’s ActiveRecord opinion
  (We should probably be rolling an Elixir Weekly at this point..) 
  AmberBit
• On the 'if' opinion
  “ifs in Ruby annoy me. I’m going to explain how and why I came to this conclusion”  
  purinkle
• Bond - A Spy-Based Testing and Mocking Library tools
  Available for Python, Ruby, and Java. Tutorial here. 
  Erik Krogen
• Opal::Actioncable: Bring ActionCable Support to Opal code 
  
• Tiny Path: A Tiny, Monte Carlo Path Tracer in Ruby code
  Written as a learning aid for people interested in raytracing.  
  Julian Villella
• DynamoDB::Migration: A Simple DynamoDB Migration Tool code 
  Henry Lawson
• ActiveEnumerable: ActiveRecord-Like Query Methods for Enumerables code 
  Dustin Zeisler
• VeryAnts: Probabilistic Integer Arithmetic code 
  Saghm Rossi
• googledoc_markdown: A Gem for Converting Google Doc HTML to Markdown code 
  Ivar Vong
• Jump start your next Ruby on Rails project 
  Happy Bear Software is a small technical consultancy that builds web applications for startups, established businesses and non-profits. 
  Happybearsoftware   Sponsored