An amazing new feature is now available in Ruby, it’s called pattern matching & it lets you extract specific values from complex data structures like arrays, hashes, and objects using concise syntax. In addition, it helps you check that these objects match a specific structure, so it works as a form of object validation. Since … Read more
What is a Ruby hash? A hash is an efficient data structure that lets you store data in UNIQUE key-value pairs. It’s like a kind of dictionary that you can build & use to quickly search for something. The “word” in this dictionary is the key, and the “definitions” are the values stored under each … Read more
If you’re learning Ruby you may find the use of the “self” keyword very confusing. How does it work? What is self, exactly? It’s a Ruby keyword that gives you access to the current object. If you don’t know what objects are, watch this video I made for you. It’s related to Object-Oriented Programming. This … Read more
You may be learning Rails & you read that you have to create a “scaffold” to get your Rails application started… Easy! You can do this using the rails g scaffold command. But what is scaffolding? “Scaffolding is a temporary structure used to support a work crew to aid in the construction, maintenance and repair … Read more
Did you know that you can navigate your file system with Ruby? With the Ruby “Dir” class. You can list directory entries, change your current directory & even create new folders! Here’s an example: filenames = Dir.entries(“.”) This entries method returns an array of filename entries. Every entry is a string, so you’ll need to … Read more