RuboCop: The code cop that doesn’t joke around with style rules!

Although I’m not a great Ruby expert, I’m thinking of those who love this language because today we’re going to talk about RuboCop!

This awesome and totally free tool will help you improve your Ruby code in the blink of an eye!

You know how it is: You write code, you focus on the logic of your algorithm, and you forget the little style details that make all the difference, like indentation or everything that can be found as “Best Practices” in Ruby’s community style guide.

That’s where RuboCop comes in.

It will require you to follow most of the rules set out in the Ruby Community Style Guide and will allow you to format your code. But RuboCop is more than just a linter since it is also able to report problems in your code. It can correct them automatically, and that’s really cool because life is hard enough as it is ;-).

RuboCop Logo

RuboCop is super customizable since most of its behaviors can be modified in the config, and you can even create your own rules if you need to! In addition, it is compatible with all Ruby implementations and has many plug-and-play extensions (e.g., rubocop-rails, rubocop-rspec, rubocop-performance, and rubocop-minitest). Finally, it is also compatible with many publishers/IDEs and is used by many online services such as HoundCI, Sider, and CodeClimate.

In terms of installation, nothing complex. You can install it by using the following command:

gem install rubocop

If you prefer to use Bundler, just add a line for RuboCop in your Gemfile (setting the option to require: false, since it’s a standalone tool):

gem 'rubocop', require: false

RuboCop is designed to remain stable in its minor releases, both in terms of API and rule configuration. So you can use it with confidence without worrying about possible compatibility breaks.

To use it, simply run the following command directly in your Ruby project folder:


There you go!

RuboCop will go through your code and report any issues it has found. You can even ask it to automatically fix certain issues using the --auto-correct option.

To be tested urgently. Click here to learn more.

Mohamed SAKHRI
Mohamed SAKHRI

I'm the creator and editor-in-chief of Tech To Geek. Through this little blog, I share with you my passion for technology. I specialize in various operating systems such as Windows, Linux, macOS, and Android, focusing on providing practical and valuable guides.

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