ERB is a templating engine. A templating engine allows you to mix HTML & Ruby so you can generate web pages using data from your database. ERB is Rails default engine for rendering views. Note: Rails uses an implementation called erubi instead of the ERB class from the Ruby standard library. As you’ll learn later … Read more
This article is about attribute accessors (attr_accessor) in Ruby. If you’re in a hurry, scroll down. Because I would like to start by explaining: Why we use attribute accessors! Let’s say that you have a class with instance variables & you want to expose them to the outside world. How? You have to define a … Read more
Doing coding challenges is an excellent way to improve your Ruby & problem-solving skills. And to prepare for coding interviews! Why? Because during a challenge you put all your focus on solving 1 specific problem. You don’t have to worry about anything else. This kind of practice will expand your thinking skills, allow you to … Read more
Ruby has this defined? keyword that helps you check if a variable is defined or not. If the variable exists you’ll get its type: apple = 1 defined?(apple) # “local-variable” If it doesn’t you’ll get nil: defined?(bacon) # nil This is like Javascript’s typeof operator. If you want to know the class of an object … Read more
There are many ways to print something in Ruby. Here are the most useful: But how are these different? And when should you use one or the other? That’s what you’re going to learn in this article! How to Print Without A Newline When you want to print something on the screen for the user … Read more