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Review
--Ethan Roberts
Owner, Monkey Mind LLC
"Eloquent Ruby lives up to its name. It's a smooth introduction to Ruby that's both well organized and enjoyable to read, as it covers all the essential topics in the right order. This is the book I wish I'd learned Ruby from."
--James Kebinger
Senior Software Engineer, PatientsLikeMe
www.monkeyatlarge.com
"Ruby's syntactic and logical aesthetics represent the pinnacle for elegance and beauty in the ALGOL family of programming languages. Eloquent Ruby is the perfect book to highlight this masterful language and Russ's blend of wit and wisdom is certain to entertain and inform."
--Michael Fogus
Contributor to the Clojure programming language and author of The Joy of Clojure
Product Description
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.
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Customer Reviews
The first part of the book is for the Ruby newbies, but takes an interesting deviation from most programming books. Instead of focusing simply on the syntax and language libraries, Eloquent Ruby focuses on the community aspect of the Ruby programming language. Each programming community has its own style and norms and without a lot of direction and practice, these style and norms can be difficult to learn. The Ruby community is heavily opinionated and Russ's book does a great job of explaining these opinions and their manifestation in many Ruby codebases.
In Part Two of Eloquent Ruby, Olsen dives into the core concepts and building blocks of the Ruby programming language. This section of the book covers the everyday usage patterns and common best practices when working with Ruby's classes, iterators, blocks, and modules.
The power and flexibility of Ruby is put on full display in Part Three of Russ's book. Newcomers to Ruby are often mystified by Ruby code that appears to be doing magical things like dynamically adding methods to a class. In this section, Russ pulls back the curtain and explains the magic that is metaprogramming. Those unfamiliar with the concept may find the topic confusing at first, but Olsen breaks it down in a way that is easy to understand. This section thoroughly covers Ruby's method_missing hook and how to open classes to add your own customizations.
In the last section Russ ties a lot of the concepts of the book together through a discussion on how Ruby can be used to create Domain Specific Languages (DSLs). As a bonus Russ finishes the book with a chapter on how to package your code into a gem (Ruby library) and a chapter on the different Ruby Implementations.
At almost 400 pages I feared Eloquent Ruby would take a while to read, but I was pleasantly surprised at the pace at which I made it through the book. Even though the book was a quick read it still felt as if I had gained a lot of new knowledge after its completion. I credit the speed reading and depth of understanding to Olsen's writing style. The book is broken up into 30 concise chapters that each focus on a specific topic. This makes the book's information very easy to digest.
Following a similar pattern from his first book, Design Patterns in Ruby, each chapter of Eloquent Ruby describes code examples "In the Wild" where Olsen discusses code snippets from open source projects using the topics covered within that chapter. In my opinion giving "real world" code examples was a great way to prove the relevance of the information covered in the book. Overall, Eloquent Ruby was a great read and I'd highly recommend it to Rubyist at all skill levels.
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