We recently published an article on Lazy Enumerables by Benjamin
Tan Wei Hao. Benjamin self-published a book called The Ruby Closures
Book, which is an amazing text on a part of Ruby we all need to know
better. By the way, you can earn a change at a free copy of The Ruby
Closures Book, by leaving a comment on that article.
My question today is: What are some of the best self-published books on Ruby?