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Construct extensible, easily maintained object-oriented software I can't stop from opening the first page of the book yesterday!This book is cool. it's not only interesting, it covers many dimensions, it's also very impressive.」 - Erich Gamma - One of ibm's leading engineers and author of Design Patterns "It's As if a thousand pounds of books were unloaded from my mind.」 - Ward Cunningham Wikipedia inventor and founder of Hillside Group "In-depth Design model" is an interesting and thought-provoking book, combining interesting, hilarious elements, insights and techniques, and practical advice.」 - Richard Helm One of the authors of design Patterns What will you learn from this book? Because you don't want to reinvent the wheel, seek help with design patterns.Design patterns are lessons learned by people who have encountered the same design problems.Master design patterns, and you can use others' experiences and best practices to spend valuable time on more challenging and interesting things.This book will tell you what are important patterns, when and why to use them, how to apply them in your own design, and what object-oriented design principles they are based on.《) Has helped tens of thousands of developers upgrade object-oriented design technology. join us! Why is this book so different? If you 've ever read any of the "shallow" series, you should expect what you' ll see - a rich visual effect tailored to the brain.Learning the design model with the second edition of the "shallow design model" will keep you away from dozes, make you better at software design issues, and use design pattern terminology to communicate with colleagues. Introduction to the author With regard to eric, Kathy Sierra, another author of the "reaching out" series, said he was one of the few people who had mastered languages, practical law and culture in a wide range of fields, including literary hackers, associate business associates, engineers and think tanks.」 In education and training, Eric is a computer scientist who holds a doctorate from yale university.On the professional front, Eric was CTO of Disney Online & Disney.com, owned by walddisney. Now eric is a guide to help in the "reaching out" series, and is committed to creating the WickedlySmart print and film content, which is spread across mainstream educational channels. Eric has written series "in-depth out-of-depth design mode, ""in-depth out-of-depth out HTML & CSS,"" out-of-depth JavaScript programming, ""out-of-depth out HTML5 programming, and Eric lives in texas, austin. Elisabeth is a software engineer, writer and trainer.She was enthusiastic about technology when she studied at yale university, where she received a master's degree in computer science. She is one of the founders of wakedlysmart, where she is currently responsible for writing books, articles, films...Wait.When she was special project manager at o 'reilly Media, she held on-site seminars and online courses on a variety of technolog