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What level of test coverage should I shoot for?

What level of test coverage should I shoot for? “What level of test coverage should I shoot for?” is one of the questions most commonly asked by beginners to Rails testing.My answer is that you shouldn’t shoot for a particular level of test coverage. I recommend that instead you make testing a ...

How to Migrate Your JavaScript From Sprockets to Webpacker

How to Migrate Your JavaScript From Sprockets to Webpacker Back in 2011, Rails 3.1 introduced The Assets Pipeline feature using the Sprockets gem. This made it really easy to handle assets (images, fonts, JavaScript, CSS and more), solving many of the issues that developers had to face everyday.In 2012, W...

Build your own RSpec free Book by Paweł Dąbrowski

Build your own RSpec free Book by Paweł Dąbrowski I have good news for you!I decided to launch a blog dedicated only to Ruby, so readers are sure they won't read anything that won't be interesting for them. And here it is Long Live Ruby!To say thank you for your patience and trust, I prepared an ...

Check where a method is defined in Ruby

Check where a method is defined in Ruby As the ‘set’ method comes from the Sinatra gem, it will output the path to the base.rb file from the gem, and the line number.If you are using a Mac, you can open Finder, press Command Shift G and paste in the path above to navigate to it quic...

What's the Best EC2 Instance Type for Rails Apps?

What's the Best EC2 Instance Type for Rails Apps? Do you ever look at the list of Amazon EC2 instance types?. Those are sizes of virtual machine you can rent to run your code on. Well, okay, they're groups of sizes, since each one of those headings has a bunch of different sizes of VM...So what t...

Ruby 3.0 Interpolated Strings Are No Longer Frozen

Ruby 3.0 Interpolated Strings Are No Longer Frozen In Ruby, frozen_string_literal: truemakes all string literals frozen by default and it helps in reducing needless memory allocations by not creating a new allocation each time a string is redefined.In Ruby 2.7.1 and earlier versions, interpolated ...

Announcing HashiCorp Waypoint

Announcing HashiCorp Waypoint Today, we are happy to announce HashiCorp Waypoint, a new open source project that provides developers a consistent workflow to build, deploy, and release applications across any platform. Waypoint enables developers to get their applications from...

RuboCop 1.0 | Meta Redux

RuboCop 1.0 | Meta Redux RuboCop’s development started exactly 7 and half years ago. I made the first commit on April 21, 2012. That’s a lot of time in general, but even more in the fast moving world of IT. During this long period we’ve racked up some impressive numbers:9...

Ruby Perf Myths: GC and Concurrency

Ruby Perf Myths: GC and Concurrency I've been doing this for a while now, so I've heard lots of guesses as to why Ruby isn't faster. I refuse to say "slow", because Ruby isn't meaningfully slower than it's close competition (exception Javascript, but I would rather say 'JS is fast' ...

Departure.rb

Departure.rb Databases are usually the lifeblood of applications and of dynamic web sites.They manage the information that applications depend on, and a large portion ofapplication development revolves around the care and feeding of the data thatgoes into a da...

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