KERIEVSKY REFACTORING TO PATTERNS PDF

In , Design Patterns changed the landscape of object-oriented development by introducing classic solutions to recurring design problems. In , Refactoring revolutionized design by introducing an effective process for improving code. With the highly anticipated Refactoring to Patterns , Joshua Kerievsky has changed our approach to design by forever uniting patterns with the evolutionary process of refactoring. This book introduces the theory and practice of pattern-directed refactorings: sequences of low-level refactorings that allow designers to safely move designs to, towards, or away from pattern implementations. Using code from real-world projects, Kerievsky documents the thinking and steps underlying over two dozen pattern-based design transformations.

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Thanks for telling us about the problem. Return to Book Page. Preview — Refactoring to Patterns by Joshua Kerievsky. Martin Fowler Foreword by. Ralph Johnson Foreword by. In , "Design Patterns" changed the landscape of object-oriented development by introducing classic solutions to recurring design problems.

In , "Refactoring" revolutionized design by introducing an effective process for improving code. With the highly anticipated " Refactoring to Patterns ," Joshua Kerievsky has changed our approach to design by forever uniting pat In , "Design Patterns" changed the landscape of object-oriented development by introducing classic solutions to recurring design problems. With the highly anticipated " Refactoring to Patterns ," Joshua Kerievsky has changed our approach to design by forever uniting patterns with the evolutionary process of refactoring.

This book introduces the theory and practice of pattern-directed refactorings: sequences of low-level refactorings that allow designers to safely move designs to, towards, or away from pattern implementations. Using code from real-world projects, Kerievsky documents the thinking and steps underlying over two dozen pattern-based design transformations.

Along the way he offers insights into pattern differences and how to implement patterns in the simplest possible ways. Coverage includes: A catalog of twenty-seven pattern-directed refactorings, featuring real-world code examples Descriptions of twelve design smells that indicate the need for this book s refactorings General information and new insights about patterns and refactoringDetailed implementation mechanics: how low-level refactorings are combined to implement high-level patterns Multiple ways to implement the same pattern and when to use each Practical ways to get started even if you have little experience with patterns or refactoring "Refactoring to Patterns" reflects three years of refinement and the insights of more than sixty software engineering thought leaders in the global patterns, refactoring, and agile development communities.

Whether you re focused on legacy or greenfield development, this book will make you a better software designer by helping you learn how to make important design changes safely and effectively. Get A Copy. Hardcover , pages. Published August 15th by Addison-Wesley Professional first published More Details Original Title. Other Editions 9. Friend Reviews.

To see what your friends thought of this book, please sign up. To ask other readers questions about Refactoring to Patterns , please sign up. Be the first to ask a question about Refactoring to Patterns. Lists with This Book. Community Reviews. Showing Average rating 4. Rating details. More filters. Sort order. Start your review of Refactoring to Patterns. Oct 30, Rod Hilton rated it liked it Shelves: programming.

Refactoring to Patterns essentially attempts to merge together two types of books: books on code design such as the GoF Patterns book, Head First Design Patterns, Patterns of Enterprise Application Architecture, etc and books on engineering principles such as the eXtreme Programming series and, most of all, Fowler's Refactoring.

In this, it succeeds. Refactoring to Patterns really makes explicit the relationship between agile programming practices and OO design.

It draws a connection precisel Refactoring to Patterns essentially attempts to merge together two types of books: books on code design such as the GoF Patterns book, Head First Design Patterns, Patterns of Enterprise Application Architecture, etc and books on engineering principles such as the eXtreme Programming series and, most of all, Fowler's Refactoring.

It draws a connection precisely where two concepts are connected but where few books tread. Kerievsky isn't a Patternista either, he makes it clear that Patterns are often overkill for some types of problems, and he always mentions both the benefits and costs of a pattern being discussed. The main problem with the book is that it exists to create a connection that I think most people can create on their own. If you've read Refactoring and a Design Patterns book, I don't think there's a lot to be gained here.

Often I found myself reading the writeup of a pattern, looking at its diagram, and skimming the "How To" section. I'd often skip the example entirely, as it was clear by that point that I knew exactly how to refactor to a pattern. What does the code look like when it's in a state that it should be refactored to a design pattern? Kerievsky does a decent job with this goal, but often I wondered if it would have been better for him to go into more examples and detail on that subject, and spend less time taking the reader step-by-step through the actual refactoring itself.

Those pages often felt like padding in a book struggling to reach pages. If you feel comfortable implementing Design Patterns but unsure of when it's appropriate to use them, this would be a good book, though I have a hard time believing there isn't a better one out there though to be fair, I can't think of one.

Otherwise, I don't think there's much to glean from the book - often pages were spent spelling out refactoring steps that anyone with some experience with Patterns probably already understands. Without context advises from pattern books like Design Patterns: Elements of Reusable Object-Oriented Software can be difficult to apply.

This is where Joshua's book shine. He walks through many different patterns, shows how messy code could look and explains how to refactor the code into patterns.

Most importantly he also gives many advises to when not to apply the refactorings. I particularly likes the boxes with pros and cons for each refactoring. Although I have read both books I find it difficult to figure out which order it would be best to read the books in. But in the end all three books needs to be read multiple times to absorb all the knowledge. The main concern I have with the book is the mechanics section that step by step explain how to apply the refactoring, right after this there is an example.

I think the mechanics are almost redundant. I say almost because the section might prove usefull when using the book as a reference. Jan 11, Mark Nenadov rated it really liked it Shelves: programming , technology. A solid resource for software developers. There is a lot of real code and explanation here. And the code displayed generally isn't some sort of pared down or contrived example. My only beef is that I found some aspects of the layout to be rather tedious, and while initially the format seems attractive and effective, by the end it seems too busy a A solid resource for software developers.

My only beef is that I found some aspects of the layout to be rather tedious, and while initially the format seems attractive and effective, by the end it seems too busy and perhaps even grating due to repetition. Jan 16, Tim rated it really liked it. Really useful reference material.

You need to be comfortable with design patterns in order to fully appreciate the message of this book. The mechanics for each type of refactoring is refreshing as we're often introduced to design patterns or refactoring from a singular example. This book bridges the gap between an existing solution to one that uses design patterns. Aug 10, Josh Hamacher rated it liked it Shelves: programming.

Like several other reviewers, this book left me scratching my head slightly and wondering what its aim really was. I was hoping the focus would be more on analysis of legacy code, with advice on discovering and teasing out potential patterns.

Instead, this is almost entirely a "how-to" book. The vast majority of its pages are taken up with 27 refactorings.

Each refactoring includes a "how to" section and then an often lengthy step-by-step example. Yet, if you're familiar with design pattern Like several other reviewers, this book left me scratching my head slightly and wondering what its aim really was. Yet, if you're familiar with design patterns and refactorings, both sections could be significantly shorter. Only about 50 pages are devoted to the when-and-why of refactoring, and I found the advice there to be fairly generic.

It's not a bad book; as programming books go it's pretty well written and mostly manages to avoid coming off as dry and academic despite its subject matter.

But I just don't think it really adds much to the literature on either refactorings or design patterns. View 1 comment. Oct 16, Ronald Rajagukguk rated it really liked it. Personally I expect more the book, nevertheless it gave me quite an impression. The book gave a lot of code example but unfortunately some of them is unclear, which need me to stare at the code several minutes till I understand the author intention.

Good book a software engineer who want to know design pattern deeper, but i don't recommend this book for beginner.

Jan 13, Melita Mihaljevic rated it really liked it. Great and useful book. Highly recommended. Aug 31, Marko Kunic rated it it was amazing. This should for sure be your first book about patterns.

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Refactoring To Patterns

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Refactoring to Patterns

Explore a preview version of Refactoring to Patterns right now. In , Design Patterns changed the landscape of object-oriented development by introducing classic solutions to recurring design problems. In , Refactoring revolutionized design by introducing an effective process for improving code. With the highly anticipated Refactoring to Patterns , Joshua Kerievsky has changed our approach to design by forever uniting patterns with the evolutionary process of refactoring. This book introduces the theory and practice of pattern-directed refactorings: sequences of low-level refactorings that allow designers to safely move designs to, towards, or away from pattern implementations. Using code from real-world projects, Kerievsky documents the thinking and steps underlying over two dozen pattern-based design transformations.

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For several years now, I've been involved with advocating agile methods in general, and Extreme Programming in particular. When I do people often question how this fits in with my long running interest in design patterns. Indeed I've heard people claim that by encouraging refactoring and evolutionary design, I'm recanting what I've previously written about analysis and design patterns. Yet all it takes is a quick look at people to realize that this view is flawed.

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What Is Refactoring To Patterns? Refactoring to Patterns is the marriage of refactoring -- the process of improving the design of existing code -- with patterns, the classic solutions to recurring design problems. Refactoring to Patterns suggests that using patterns to improve an existing design is better than using patterns early in a new design. This is true whether code is years old or minutes old. We improve designs with patterns by applying sequences of low-level design transformations, known as refactorings. This book was written to help you Understand how to combine refactoring and patterns Improve the design of existing code with pattern-directed refactorings Identify areas of code in need of pattern-directed refactoring Learn why using patterns to improve existing code is better than using patterns early in a new design To achieve these goals, this book features A catalog of 27 refactorings Examples based on real-world code, not the toy stuff Pattern descriptions, including real-world pattern examples A collection of smells i. This book is for object-oriented programmers engaged in or interested in improving the design of existing code.

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