Book Image

Comprehensive Ruby Programming

By : Jordan Hudgens
Book Image

Comprehensive Ruby Programming

By: Jordan Hudgens

Overview of this book

Ruby is a powerful, general-purpose programming language that can be applied to any task. Whether you are an experienced developer who wants to learn a new language or you are new to programming, this book is your comprehensive Ruby coding guide. Starting with the foundational principles, such as syntax, and scaling up to advanced topics such as big data analysis, this book will give you all of the tools you need to be a professional Ruby developer. A few of the key topics are: object-oriented programming, built-in Ruby methods, core programming skills, and an introduction to the Ruby on Rails and Sinatra web frameworks. You will also build 10 practical Ruby programs. Created by an experienced Ruby developer, this book has been written to ensure it focuses on the skills you will need to be a professional Ruby developer. After you have read this book, you will be ready to start building real-world Ruby projects.
Table of Contents (20 chapters)

Implementing a humanize counting algorithm

In this section, we are going to solve another complicated math problem using Ruby. The question we'll answer is: If all the numbers from 1 to 1,000 were written out in words, how many letters would be used?

Though this problem looks complex, it can be solved easily in Ruby using the humanize library. We start by including the humanize gem. If you don't have this gem on your system, install it by running gem install humanize.

Now let's dive into the code:

require 'humanize'

(1..1000).to_a.map(&:humanize)

In the first line, we included the humanize gem. On the next line, we built a range from 1 to 1,000 and converted it into an array. Lastly, we called the humanize method on this array by utilizing the map method. This will convert each element in the array into its named value.

If you execute now, the output...