In my top 10 of all time...
This book is quite simply one of the finest software development books ever written. The style, the length, the scope, and the structure are all absolutely perfect. The balance creates a reading experience that seemingly opens a channel to your brain and feeds the information in.
Flanagan is a master author of technical books, especially languages. His JavaScript book is equally well done. Matsumoto's unique technical mastery here leaves no stone unturned. And even the artwork by "why the lucky stiff" added a fun element that just rounded out the book as the best in its class.
If I could forget the whole thing, just so I could read it again, I would. It is that good.
Matz Gets It Right!
This book does for Ruby what Kernighan & Ritchie's "The C Programming Language" did for C. It provides a concise, accessible introduction to the Ruby programming language.
Starting out with a tour of Ruby, you are then taken on a deeper dive into chapters on "Structure and Execution", "Datatypes and Objects", "Expressions and Operators", and "Statements and Control Structures". Some of the real power of Ruby is revealed in chapters on "Methods, Procs, Lambdas, and Closures", "Classes and Modules", and "Reflection and Metaprogramming".
The book closes with chapters on "The Ruby Platform" and "The Ruby Environment". The chapter on the Ruby Platform is like a condensed API guide to Ruby's core library. The chapter on the Ruby Environment will help you navigate through the Ruby interpreter's command-line arguments and environment variables as well as a grab-bag of extra Ruby topics that were not covered earlier in the book.
The book is well organized and easy to read. Each chapter is peppered with code samples. If you are serious about learning Ruby, get this book! It sits on my bookshelf, next to a copy of the Pickaxe book and The Ruby Way. Bonus: each chapter of the book starts with a work of art by why the lucky stiff!
The new go-to Ruby reference
The Ruby Programming Language is my new favorite Ruby book. I personally think it is a better text than the famous "Pickaxe" book. While the Pickaxe has a great class/module reference (it's over half of the book, after all), the actual explanations of how Ruby works in The Ruby Programming Language are clearer and go into much more depth. Most importantly for me, The Ruby Programming Language covers some of the more complicated topics, such as metaprogramming, with MUCH more depth. From the Pickaxe alone I had trouble understanding how some of these Ruby features worked. But with this new book, it's much clearer.
If you want the defacto Ruby book, this is it.
Excellent Guide To Ruby
Really found this to be an excellent guide to the Ruby programming language. This is definitely not just the API rehashed in print.
The difference in the style of this book and some others, in my opinion, is the difference between a map and a travel guide. A map may show you what and where things are, and may even be useful for figuring out how to go between locations, a travel guide will often include maps plus the inside scoop on what is interesting.
This book is similar. The writing style is like having an expert sit down and explain to you the various facets of the language, how to use them, points that are notable, etc. And all of this content is within a reasonable 400 pages.
Highly recommended.
Exactly what I expected from O'Reilly
I wish every book about a programming language was written like this one:
First, it is fairly compact and doesn't waste space (and your time) explaining to you what is a byte or a register, like some 800 page "volumes about everything" do. It correctly assumes that the reader is a programmer and explains the language, not the programming.
Second, it covers Ruby in depth. Read this book and you'll easily understand the most craziest Ruby code examples that could be found inside of Rails and other popular libraries. Moreover, I've found a few tricks in the book that I don't believe I saw in the wild.
And finally, author's language is very clean, free of buzzwords and needless repetitions. As always with O'Reilly books, this one is also very neatly structured and makes an excellent reference book.
Buy it.
