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Praise for Design Patterns in Ruby
" Design Patterns in Ruby documents smart ways to resolve many problems that
Ruby developers commonly encounter. Russ Olsen has done a great job of
selecting classic patterns and augmenting these with newer patterns that have
special relevance for Ruby. He clearly explains each idea, making a wealth of
experience available to Ruby developers for their own daily work."
—Steve Metsker, Managing Consultant with Dominion Digital, Inc.
"This book provides a great demonstration of the key 'Gang of Four' design
patterns without resorting to overly technical explanations. Written in a
precise, yet almost informal style, this book covers enough ground that even
those without prior exposure to design patterns will soon feel confident
applying them using Ruby. Olsen has done a great job to make a book about a
classically 'dry' subject into such an engaging and even occasionally humorous
"This book renewed my interest in understanding patterns after a decade of
good intentions. Russ picked the most useful patterns for Ruby and introduced
them in a straightforward and logical manner, going beyond the GoF's patterns.
This book has improved my use of Ruby, and encouraged me to blow off the dust
covering the GoF book."
" Design Patterns in Ruby is a great way for programmers from statically typed
objectoriented languages to learn how design patterns appear in a more dynamic,
flexible language like Ruby."
—Rob Sanheim, Ruby Ninja, Relevance
Most design pattern books are based on C++ and Java. But Ruby is different—and
the language's unique qualities make design patterns easier to implement and
use. In this book, Russ Olsen demonstrates how to combine Ruby's power and
elegance with patterns, and write more sophisticated, effective software with
far fewer lines of code.
After reviewing the history, concepts, and goals of design patterns, Olsen
offers a quick tour of the Ruby language—enough to allow any experienced
software developer to immediately utilize patterns with Ruby. The book
especially calls attention to Ruby features that simplify the use of patterns,
including dynamic typing, code closures, and "mixins" for easier code reuse.
Fourteen of the classic "Gang of Four" patterns are considered from the Ruby
point of view, explaining what problems each pattern solves, discussing whether
traditional implementations make sense in the Ruby environment, and introducing
Ruby-specific improvements. You'll discover opportunities to implement patterns
in just one or two lines of code, instead of the endlessly repeated boilerplate
that conventional languages often require.
Design Patterns in Ruby also identifies innovative new patterns that have
emerged from the Ruby community. These include ways to create custom objects
with metaprogramming, as well as the ambitious Rails-based "Convention Over
Configuration" pattern, designed to help integrate entire applications and
Engaging, practical, and accessible, Design Patterns in Ruby will help you
build better software while making your Ruby programming experience more