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Eloquent Ruby Information and Reviews

Book Information

  • Author: Russ Olsen
  • E-mail:
  • Twitter: @russolsen
  • Website:
  • Format: Paperback, 413 pages
  • Publication Date: February 21st 2011
  • Publisher: Addison-Wesley Professional
  • Price: $38.63
  • ISBN: 860-1300-202396


It s easy to write correct Ruby code, but to gain the fluency needed to write great Ruby code, you must go beyond syntax and absorb the Ruby way of thinking and problem solving. In Eloquent Ruby, Russ Olsen helps you write Ruby like true Rubyists do so you can leverage its immense, surprising power. Olsen draws on years of experience internalizing the Ruby culture and teaching Ruby to other programmers. He guides you to the Ah Ha! moments when it suddenly becomes clear why Ruby works the way it does, and how you can take advantage of this language s elegance and expressiveness. Eloquent Ruby starts small, answering tactical questions focused on a single statement, method, test, or bug. You ll learn how to write code that actually looks like Ruby (not Java or C#); why Ruby has so many control structures; how to use strings, expressions, and symbols; and what dynamic typing is really good for. Next, the book addresses bigger questions related to building methods and classes. You ll discover why Ruby classes contain so many tiny methods, when to use operator overloading, and when to avoid it. Olsen explains how to write Ruby code that writes its own code and why you ll want to. He concludes with powerful project-level features and techniques ranging from gems to Domain Specific Languages. A part of the renowned Addison-Wesley Professional Ruby Series, Eloquent Ruby will help you put on your Ruby-colored glasses and get results that make you a true believer."


Review 1

  • Review #1 Title: The first Ruby book I read in full within 24 hours
  • Reviewer #1: Peter Cooper
  • Review #1 Date: February 26, 2011

This book is so easy to read yet so useful and informative that I read it in its entirety within 24 hours (across 2 distinct days admittedly ;-)).
Eloquent Ruby is a book published by Addison Wesley and written by Russ Olsen (who also wrote Design Patterns in Ruby a few years ago). It clocks in at around 400 pages and has 31 chapters clocking in at around a punchy 10 pages each. Each chapter is titled as a guideline you should follow to write "eloquent" Ruby - things like Create Classes That Understand Equality and Write Code That Looks Like Ruby - and typically the claim is explained, some code examples shown and discussed, some real world examples pointed to, and that's it. As with Design Patterns in Ruby, Russ adopts a chatty, familiar tone. Reading this book is like reading a book specifically written for you by a friend. He doesn't shoot off on many unnecessary tangents and he keeps the stories short and sweet but this book certainly couldn't be called dry.
The book is also notably short of egregious errors or omissions. Even when I don't read something with a fine-toothed comb on standby, I can usually pick out a laundry list of factual and grammatical errors or omissions (as both Obie Fernandez and my wife will attest) but Eloquent Ruby gave me little to chew on. I can only bring to mind a few spacing and formatting issues and only one true "error": a > instead of a < in a class definition on a single example.
Russ tries to remain neutral with his choice of Ruby implementations but the book seems to focus primarily on Ruby 1.9 (Ruby 1.9.1 specifically but that's just due to when he wrote it) while providing useful footnotes in the cases where there are differences to Ruby 1.8. No matter what Ruby implementation you're using, there's little to confuse you as most of it is very non-implementation and non-version specific.
I wholeheartedly recommend this book to anyone except those who, well, could have written a similar book themselves. The short punchy chapters make it a delight to read and gives the option of reading it merely 10 minutes at a time before bed or similar. The short chapters also make it useful as a reference if you forget how to do a certain thing like, say, use method_missing, even though it's not put together as a reference book at all. Lastly, this book is a must read if you're not confident with Ruby idioms and the best way to structure and lay out your code - Russ's approaches reinforce the current "standard" way to write Ruby and this alone is worth the price of admission.

Review 2

  • Review #2 Title: Eloquent Olsen
  • Reviewer #2: Fogus
  • Review #2 Date: March 7th, 2011

For better or worse the vast majority of my work life journey has been travelled with Java as my vehicle of expression. However, by nature I have a burning desire to learn new languages and at one point or another I discovered Russ Olsen's (also the author of Eloquent Ruby) "Design Patterns in Ruby". Having at one time counted myself as a true-believer in everything pattern-esque, I was excited for the opportunity to learn Ruby under the aegis of The Gang of Four. However, what I found was something else entirely. I absolutely loved "Design Patterns in Ruby" for reasons that I was not expecting. That is, what I found was an extremely interesting book that was playful and as a nice side-effect *actually taught me how Ruby's powerful features make many design patterns unnecessary*.
Olsen, with his latest effort has mastered the art of writing a book that is extremely interesting, fun, and informative. As an author myself, I greatly admire the ability in other authors to take what many would consider dry and bland, a programming language book, and create something that is truly special. Let me not give the impression that "Eloquent Ruby" is filled with fluff however; on the contrary, of any Ruby book that I've read I have learn the most from Mr. Olsen's masterpiece.
"Eloquent Ruby" is written for the programmer like me: someone with previous programming experience, but with only a passing understanding of Ruby itself. The structure of the book will help guide the Ruby neophyte toward a stronger understanding of not only the language constructs and idioms, but also the Ruby culture. As an outsider to said culture, I've always viewed the Ruby community as merely a collection of characters, but Olsen's book helps to illustrate that (almost universally) Ruby practitioners first and foremost strive to create correct and robust solutions. As a proponent of the Lisp family of languages, I tend to look askance at languages falling into the ALGOL family, but "Eloquent Ruby" has succeeded in convincing me that with the right approach and mindset then Ruby can be a stunningly beautiful language. And this is really the key point to take away from Mr. Olsen's book. That is, he guides the reader through the Ruby mindset to drive home the point that Ruby's features -- from its powerful and fluent blocks and modules, to the mind-bending metaprogramming facilities, to its to its humble symbol, and through its philosophy of "Objects all the way down" -- play together in such a way as to foster ... well, elegance.
The highlight of the book is of course its dénouement that succeeds in pulling together all of the lessons presented throughout the book into explaining the role that Domain-Specific Languages (DSL) serve in solving programming problems with Ruby. I can't possibly do justice in summarizing this important technique, but the punch-line is that Ruby's features foster the creation of powerful and expressive DSLs used to simplify the development of complex solutions by allowing the language itself to be molded into a form that is highly expressive to said solution! It takes a while to see the power in this technique, but "Eloquent Ruby" makes a compelling case indeed.
Russ Olsen has helped me to gain more experience points in Ruby, and I must say that I am excited to learn more. If you too wish to learn more about Ruby, then you would be hard-pressed to find a better book than "Eloquent Ruby" in helping you to do so.