Most programs have data -- here we talk about 3 ways to store data in a program: the ever-present Hash, the cool-kid Struct, and a regular Class.
ABOUT RUBY OFF RAILS
Ruby Off Rails is dedicated to accelerating the mastering of Ruby and increasing developer happiness everywhere.
In my software training, I see two distinct sets of programmers: those who know Ruby, and those who haven’t learned it yet. People who learn Ruby have an easier time understanding Rails, gems, and what magic voodoo is going on. And most importantly, they can cast wicked voodoo themselves.