Design Patterns For Dummies

There's a pattern here, and here's how to use it!Find out how the 23 leading design patterns can save you time and troubleEver feel as if you've solved this programming problem before You -- or someone -- probably did, and that's why there's a design pattern to help this time around. This book shows you how (and when) to use the famous patterns developed by the "Gang of Four," plus some new ones, all designed to make your programming life easier. Discover how to:

• Simplify the programming process with design patterns
• Make the most of the Decorator, Factory, and Adapter patterns
• Identify which pattern applies
• Reduce the amount of code needed for a task
• Create your own patterns

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Working Effectively with Legacy Code

Get more out of your legacy systems: more performance, functionality, reliability, and manageability Is your code easy to change. Can you get nearly instantaneous feedback when you do change it. Do you understand it. If the answer to any of these questions is no, you have legacy code, and it is draining time and money away from your development efforts.In this book, Michael Feathers offers start-to-finish strategies for working more effectively with large, untested legacy code bases. This book draws on material Michael created for his renowned Object Mentor seminars: techniques Michael has used in mentoring to help hundreds of developers, technical managers, and testers bring their legacy systems under control. The topics covered include Understanding the mechanics of software change: adding features, fixing bugs, improving design, optimizing performance Getting legacy code into a test harness Writing tests that protect you against introducing new problems Techniques that can be used with any language or platform.with examples in Java, C++, C, and C# Accurately identifying where code changes need to be made Coping with legacy systems that aren't object-oriented Handling applications that don't seem to have any structureThis book also includes a catalog of twenty-four dependency-breaking techniques that help you work with program elements in isolation and make safer changes.. Copyright Pearson Education. All rights reserved.

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Refactoring to Patterns

In 1994, Design Patterns changed the landscape of object-oriented development by introducing classic solutions to recurring design problems. In 1999, 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. 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 books refactorings General information and new insights about patterns and refactoring Detailed 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.

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Refactoring Workbook

Refactoring has gained widespread acceptance in the software engineering community as a proven means of improving software. Martin Fowler's seminal book on this topic, Refactoring, has been used in the classroom to explain that existing code could be improved and enhanced without significantly altering the fundamental structure of an application. But many find that this concept has a steep learning curve that inhibits its use. In this new book, William Wake offers a more introductory look at this important topic. The author outlines a proven workbook approach to learning and applying refactoring to "everyday" projects. This approach relies on examples that force the student to apply the main concepts of refactoring. As a result, readers gain thorough knowledge of how refactoring can help improve their software.

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Refactoring

Your class library works, but could it be better? Refactoring: Improving the Design of Existing Code shows how refactoring can make object-oriented code simpler and easier to maintain. Today refactoring requires considerable design know-how, but once tools become available, all programmers should be able to improve their code using refactoring techniques. Besides an introduction to refactoring, this handbook provides a catalog of dozens of tips for improving code. The best thing about Refactoring is its remarkably clear presentation, along with excellent nuts-and-bolts advice, from object expert Martin Fowler. The author is also an authority on software patterns and UML, and this experience helps make this a better book, one that should be immediately accessible to any intermediate or advanced object-oriented developer. (Just like patterns, each refactoring tip is presented with a simple name, a "motivation," and examples using Java and UML.) Early chapters stress the importance of testing in successful refactoring. (When you improve code, you have to test to verify that it still works.) After the discussion on how to detect the "smell" of bad code, readers get to the heart of the book, its catalog of over 70 "refactorings"--tips for better and simpler class design. Each tip is illustrated with "before" and "after" code, along with an explanation. Later chapters provide a quick look at refactoring research. Like software patterns, refactoring may be an idea whose time has come. This groundbreaking title will surely help bring refactoring to the programming mainstream. With its clear advice on a hot new topic, Refactoring is sure to be essential reading for anyone who writes or maintains object-oriented software. --Richard DraganTopics Covered: Refactoring, improving software code, redesign, design tips, patterns, unit testing, refactoring research, and tools.

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