--- title: "What’s New in Ruby 2.6?" publication: "Ruby Weekly" issue: 425 published_at: "2018-11-15" canonical_url: "https://rubyweekly.com/issues/425" --- This week's Ruby news, issue 425 #425 — November 15, 2018 [Read on the Web](https://rubyweekly.com/issues/425) Ruby Weekly [What’s New in Ruby 2.6?](https://medium.com/tailor-tech/whats-new-in-ruby-2-6-a4774f3631c1) — [Ruby 2.6 preview 3](https://www.ruby-lang.org/en/news/2018/11/06/ruby-2-6-0-preview3-released/) is out, the final release is just over a month away, but here’s a look at what’s in it for you as a Ruby developer. Guy Maliar [Image Placeholders for Your Development Environment](https://blog.arkency.com/image-placeholder-for-your-development-environment/) — Replace broken images with placeholders using Rack middleware. Arkency Blog [![\](https://copm.s3.amazonaws.com/f7b336e6.png)](https://www.citusdata.com/blog/2017/04/28/postgres-tips-for-rails/?utm_source=ruby_weekly&utm_medium=email&utm_campaign=sponsor_blog) [PostgreSQL Tips for Rails Created at Railsconf by Citus Devs](https://www.citusdata.com/blog/2017/04/28/postgres-tips-for-rails/?utm_source=ruby_weekly&utm_medium=email&utm_campaign=sponsor_blog) — How to improve application performance for Rails apps on Postgres. Written by Citus engineers on the show floor at RailsConf. Featuring useful utilities like statement time-outs, marginalia, pg_stat_statements, & pgBouncer. CITUS DATA sponsor [`Proc#<<` and `Proc#>>`: An Eventual Way to Do Proc Composition?](https://github.com/nobu/ruby/commit/1c271e9d3ec8f1233f06e99291792085ec64864d) — Here’s the [underlying proposal](https://bugs.ruby-lang.org/issues/6284) if you want to learn more. GitHub [Taking Stimulus.js for a Ride](http://nts.strzibny.name/stimulus-js-front-end-framework-example/) — [Stimulus](https://stimulusjs.org/) is a JavaScript framework from the Basecamp folks (including DHH) that works around the idea of decorating your HTML. Josef Strzibny [Hash Rockets Are Good Actually](https://samphippen.com/hash-rockets-are-good-actually/) — One developer’s opinion on why the classic, default way of notating hashes is better than the optional, symbol-oriented 1.9+ approach. Sam Phippen 💻 Jobs [Sr. Fullstack Engineer (Remote)](https://www.stickermule.com/careers) — Sticker Mule is looking for passionate developers to join our remote team. Come help us become the Internet’s best place to shop and work. Sticker Mule [Ruby on Rails Developer - Coppell, TX](https://www.indeed.com/job/ruby-rails-software-developer-2b0dc376360ba873) — Join our tight-knit and diverse team delivering health and wellness clarity. Onsite Health Diagnostics [Join Our Career Marketplace & Get Matched With A Job You Love](https://www.hired.com/ruby) — Through Hired, software engineers have transparency into salary offers, competing opportunities, and job details. Hired 📘 Articles & Tutorials [Setting Up Local SSL for Rails 5 Development and Tests](https://rossta.net/blog/local-ssl-for-rails-5.html) — A comprehensive approach to this age-old issue of local web development. Ross Kaffenberger [3 Brief Tips for Using `ActiveRecord::Calculations`](https://www.ombulabs.com/blog/rails/performance/writing-fast-rails-part-2.html) — A follow up to a Rails performance post _from 2016_. That’s commitment. Luciano Becerra [Exploring Ruby 2.6: Enumerator, Hash, and Enumerable Changes](https://medium.com/square-corner-blog/exploring-ruby-2-6-enumerator-hash-and-enumerable-changes-11ffa4b12eb9) Brandon Weaver [Avoiding Network Calls in Rails Tests Without Using Mocks](https://www.codewithjason.com/avoiding-network-calls-rails-tests-without-using-mocks-stubs-vcr/) — .. or stubs, or even (the awesome) [VCR](https://github.com/vcr/vcr). Dependency injection, FTW. Jason Swett [Exploring RubyGems Data with Honeycomb](https://www.honeycomb.io/blog/explore-rubygems-data-with-honeycomb/) — Some neat insights into Rubygems, namely, which ones are most downloaded, the slowest to pull down, and what regions are pulling the most gems. Emily Nakashima [Build and Deploy Your Next App on DigitalOcean](https://try.digitalocean.com/developers/?_dkitrig=Ruby&utm_source=paid_newsletter+ruby+weekly&utm_medium=display&utm_campaign=2018_Brand&utm_content=11-15-18+ruby+weekly+cooperpress) — Try the most developer-friendly cloud platform on us with a $100 credit toward your first app. Get started. DigitalOcean sponsor [Birds of a Fiber: A Look at Falcon, a Modern Asynchronous Web Server for Ruby](http://blog.scoutapp.com/articles/2018/11/14/birds-of-a-fiber) — Can Fibers give a web app more throughput? The answer is a resounding… “maybe”. Derek Haynes ▶[Migrating Twitter from Rails and Powering Up with Linkerd](http://5by5.tv/rubyonrails/250) — A 30 minute podcast chat with William Morgan, a core maintainer of Linkerd and formerly an infrastructure engineer at Twitter, where he helped move Twitter from a monolith to microservices. Ruby on Rails Podcast podcast ▶[Four Ways to Scale on Heroku](https://masteringheroku.substack.com/p/4-ways-to-scale-on-heroku) — It’s not just about adding more dynos. Adam McCrea [Vim in the Future](https://emily.st/2018/11/13/vim-in-the-future/) — A brief look at the past and present of the Vim editor, its good and bad bits, and whether learning it is truly worthwhile. Emily St 🔧 Code & Tools [WebpackerCLI: Bring The Power of Webpacker to Any Web Framework](https://github.com/danielpclark/webpacker-cli) Daniel P. Clark [Launching a New Product? Use Segment as the Data Foundation for Your Tech Stack](https://segment.com/product/connections/?utm_source=rubynl&utm_medium=email&utm_content=ss) Segment sponsor [finite_machine: A Minimal Finite State Machine with a Straightforward Syntax](https://github.com/piotrmurach/finite_machine) — The gem is back with its first release in over 2+ years. Piotr Murach [JRuby 9.2.4.0 Released](https://www.jruby.org/2018/11/13/jruby-9-2-4-0.html) — Just a week after 9.2.1 comes 9.2.4 - releases coming fast for the popular JVM-oriented Ruby implementation. JRuby Core Team [Passenger 5.3.7 Released with Fixed Ubuntu 18.04 Packages](https://blog.phusion.nl/2018/11/12/passenger-5-3-7/) Phusion Blog Curated by [Cooperpress](https://cooperpress.com/) [Change your email address](https://rubyweekly.com/edit_subscription/*|UID|*) or[Stop getting this newsletter](https://rubyweekly.com/leave/*|UID|*) © Cooper Press Ltd · Fairfield Enterprise Centre, Louth, LN11 0LS, United Kingdom