Let’s talk about Ruby’s gsub method & how to use it. First, you’ll need a string to play with this method. Why? Because the whole point of gsub is to replace parts of a string. In fact: The “sub” in “gsub” stands for “substitute”, and the “g” stands for “global”. Here is an example string: … Read more
If you want to learn about Ruby instance variables, how they work & why they’re useful. You’re in the right place! First question… What’s an instance variable? In the Ruby programming language, an instance variable is a type of variable which starts with an @ symbol. Example: @fruit An instance variable is used as part … Read more
A common problem in Ruby is that you get error messages, which in technical terms we call “exceptions”. These exceptions can be expected, like a file that may be available sometimes but missing in others, or an API that is only available temporarily due to some restrictions, or they can be unexpected. Today you’ll learn … Read more
What is Sequel? Sequel is a gem that allows you to access your database, no Rails required. You can connect to your database in different ways. Mostly two: By sending raw SQL commands By using an ORM Here’s an example, using raw SQL & the MySQL database. require ‘mysql2’ client = Mysql2::Client.new(host: “localhost”) results = … Read more
What is a Ruby method? A method is a set of one or more lines of Ruby code that are grouped together for a specific purpose. The grouped code is given a name for easy reuse without the need for rewriting or copying & pasting the code. The purpose of a method can be to: … Read more