Ruby
Ruby
How to Use Strings in Ruby
I remember when I first heard about strings. I wanted to create a command line application that would ask the user for his name and age....
How to Use the Ruby Map Method
I think it’s so cool that the Ruby map method exists. It means that Ruby has support for higher-order functions, and functional programming....
How to Test Ruby Modules With Rspec
When you have a module that you include in other classes, the way you test it might not be obvious. This is what I'm going to show you in this tutorial....
Let vs. Let! vs. Instance Variables in RSpec
A common source of confusion when using RSpec is whether to use let, let!, or an instance variable, for storing state. In this article I’ll try to explain the difference between let, let!, and instanc...
If vs. Unless in Ruby
Do you find unless to be confusing? I know I do. Especially if it’s combined with one or more boolean operators....
Ruby's Sort and Sort_by
The Ruby sort method works by comparing elements of a collection through the spaceship operator, and using the quicksort algorithm....
What Is a Ruby Reducer?
The term comes from the world of functional programming, and it’s often paired with map. You’ve probably heard the term map/reduce if you’ve been in the programming world for more than a few months....
Learn How to Use Ruby Arrays in Less Than 10 Minutes
Arrays are probably the most popular data structure you’re going to use in Ruby. Learn what you can do with them and how to use them effectively....
How to Use the Each Method in Ruby
When it comes to doing the same thing over and over again, Ruby has a few methods you can choose from. But in this article we're going to look at the each method and what you can do with it....
