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How to Control a Web Browser From Ruby With Watir
Did you know that you can control a web browser with Ruby? The Watir gem allows you to do this.[...]
What is Inheritance in Ruby?
Inheritance is a fundamental OOP feature that allows you to create a more specific & specialized version of a class.[...]
How Do You Use Environment Variables in Ruby?
An environment variable is a key/value pair, it looks like this: KEY=VALUE We use these variables to share configuration between[...]
What is A Matrix & How to Use It in Ruby?
A matrix is a 2D (2-dimensional) array that can be used to store & work with spreadsheet-like data. They can[...]
How to Create Ruby Objects That Describe Themselves
When you print a string or array you see its contents. Example: puts [1,2,3] 1 2 3 But when you[...]
How to Build Command-Line Applications with Ruby
Many people forget that Ruby can do things that aren't web applications. In this article, I want to show you[...]
MiniMagick Gem: How to Transform Images Using Ruby
If you work with any kind of images in your Ruby application there is a good chance that you'll want[...]
How to Use The VCR Gem to Improve Your Testing Suite
If your Ruby application uses any kind of external API then you probably have faced the problem of slow tests[...]
What is A REPL in Ruby?
REPL stands for Read-Eval-Print-Loop. It's a program that allows you to type Ruby code & see the result directly. This[...]
How to Use State Machines in Ruby
Imagine a traffic light... It can be red, green or yellow. When it changes colors, the next color is based[...]
How to Run System Commands From Ruby
If you want to run an external command from Ruby... ...like wkhtmltopdf to convert an HTML file into a PDF.[...]
How To Use Heredoc in Ruby
What is a heredoc? A heredoc is a way to define a multiline string, while maintaining the original indentation &[...]
Dup vs Clone in Ruby: Understanding The Differences
Did you know that you can copy an object in Ruby? Not only that, but there are two different methods[...]
What Is MJIT in Ruby 2.6 & How Does It Work?
Ruby's performance has been improving a lot, version after version... and the Ruby development team is making every effort to[...]

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