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... read more

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 structure

This 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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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.... read more

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 Dragan

Topics Covered: Refactoring, improving software code, redesign, design tips, patterns, unit testing, refactoring research, and tools. (hide)

Kent Beck's eXtreme Programming eXplained provides an intriguing high-level overview of the author's Extreme Programming (XP) software development methodology. Written for IS managers, project leaders, or programmers, this... read more

Kent Beck's eXtreme Programming eXplained provides an intriguing high-level overview of the author's Extreme Programming (XP) software development methodology. Written for IS managers, project leaders, or programmers, this guide provides a glimpse at the principles behind XP and its potential advantages for small- to mid-size software development teams.

The book intends to describe what XP is, its guiding principles, and how it works. Simply written, the book avoids case studies and concrete details in demonstrating the efficacy of XP. Instead, it demonstrates how XP relies on simplicity, unit testing, programming in pairs, communal ownership of code, and customer input on software to motivate code improvement during the development process. As the author notes, these principles are not new, but when they're combined their synergy fosters a new and arguably better way to build and maintain software. Throughout the book, the author presents and explains these principles, such as "rapid feedback" and "play to win," which form the basis of XP.

Generally speaking, XP changes the way programmers work. The book is good at delineating new roles for programmers and managers who Beck calls "coaches." The most striking characteristic of XP is that programmers work in pairs, and that testing is an intrinsic part of the coding process. In a later section, the author even shows where XP works and where it doesn't and offers suggestions for migrating teams and organizations over to the XP process.

In the afterword, the author recounts the experiences that led him to develop and refine XP, an insightful section that should inspire any organization to adopt XP. This book serves as a useful introduction to the philosophy and practice of XP for the manager or programmer who wants a potentially better way to build software. --Richard Dragan

Topics covered: Extreme Programming (XP) software methodology, principles, XP team roles, facilities design, testing, refactoring, the XP software lifecycle, and adopting XP. (hide)

Best selling author and world-renowned software development expert Robert C. Martin shows how to solve the most challenging problems facing software developers, project managers, and software project leaders... read more

Best selling author and world-renowned software development expert Robert C. Martin shows how to solve the most challenging problems facing software developers, project managers, and software project leaders today.

This comprehensive, pragmatic tutorial on Agile Development and eXtreme programming, written by one of the founding father of Agile Development:

• Teaches software developers and project managers how to get projects done on time, and on budget using the power of Agile Development.
• Uses real-world case studies to show how to of plan, test, refactor, and pair program using eXtreme programming.
• Contains a wealth of reusable C++ and Java code.
• Focuses on solving customer oriented systems problems using UML and Design Patterns.

Robert C. Martin is President of Object Mentor Inc. Martin and his team of software consultants use Object-Oriented Design, Patterns, UML, Agile Methodologies, and eXtreme Programming with worldwide clients. He is the author of the best-selling book Designing Object-Oriented C++ Applications Using the Booch Method (Prentice Hall, 1995), Chief Editor of, Pattern Languages of Program Design 3 (Addison Wesley, 1997), Editor of, More C++ Gems (Cambridge, 1999), and co-author of XP in Practice, with James Newkirk (Addison-Wesley, 2001). He was Editor in Chief of the C++ Report from 1996 to 1999. He is a featured speaker at international conferences and trade shows.

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Lean Software Development: An Agile ToolkitMary Poppendieck Tom PoppendieckForewords by Jim Highsmithand Ken Schwaber Adapting agile practices to your development organization Uncovering and eradicating waste throughout the software... read more

Lean Software Development: An Agile Toolkit

Mary Poppendieck Tom Poppendieck

Forewords by Jim Highsmithand Ken Schwaber

• Adapting agile practices to your development organization
• Uncovering and eradicating waste throughout the software development lifecycle
• Practical techniques for every development manager, project manager, and technical leader

Lean Software Development: An Agile Toolkit

Lean software development: applying agile principles to your organization

In Lean Software Development, Mary and Tom Poppendieck identify seven fundamental "lean" principles, adapt them for the world of software development, and show how they can serve as the foundation for agile development approaches that work. Along the way, they introduce 22 "thinking tools" that can help you customize the right agile practices for any environment.

Better, cheaper, faster software development. You can have all three—if you adopt the same lean principles that have already revolutionized manufacturing, logistics and product development.

• Iterating towards excellence: software development as an exercise in discovery
• Managing uncertainty: "decide as late as possible" by building change into the system.
• Compressing the value stream: rapid development, feedback, and improvement
• Empowering teams and individuals without compromising coordination
• Software with integrity: promoting coherence, usability, fitness, maintainability, and adaptability
• How to "see the whole"—even when your developers are scattered across multiple locations and contractors

Simply put, Lean Software Development helps you refocus development on value, flow, and people—so you can achieve breakthrough quality, savings, speed, and business alignment.

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The seasoned programmer and novice alike find this reference the ideal resource for getting a project off to the right start. Friendly, practical advice is combined with the... read more

The seasoned programmer and novice alike find this reference the ideal resource for getting a project off to the right start. Friendly, practical advice is combined with the latest software in this ...For Dummies edition. Follow your expert guide through planning, development, testing, and implementation -- the first steps to your project's success. Then get your hands on scheduling, assigning resources and estimating costs, and best of all, making your software happen.

The book's CD-ROM includes trial versions of Microsoft Project 2000, Soffrant TRACK, and Cost Xpert as well as templates and a wealth of other planning tools. (hide)

Praise for Agile Estimating and Planning "Traditional, deterministic approaches to planning and estimating simply don't cut it on the slippery slopes of today's dynamic, change-driven projects. Mike Cohn's... read more

Praise for Agile Estimating and Planning

"Traditional, deterministic approaches to planning and estimating simply don't cut it on the slippery slopes of today's dynamic, change-driven projects. Mike Cohn's breakthrough book gives us not only the philosophy, but also the guidelines and a proven set of tools that we need to succeed in planning, estimating, and scheduling projects with a high uncertainty factor. At the same time, the author never loses sight of the need to deliver business value to the customer each step of the way."

—Doug DeCarlo, author of eXtreme Project Management: Using Leadership, Principles and Tools to Deliver Value in the Face of Volatility (Jossey-Bass, 2004)

"We know how to build predictive plans and manage them. But building plans that only estimate the future and then embrace change, challenge most of our training and skills. In Agile Estimating and Planning, Mike Cohn once again fills a hole in the Agile practices, this time by showing us a workable approach to Agile estimating and planning. Mike delves into the nooks and crannies of the subject and anticipates many of the questions and nuances of this topic. Students of Agile processes will recognize that this book is truly about agility, bridging many of the practices between Scrum and ExtremeProgramming."

—Ken Schwaber, Scrum evangelist, Agile Alliance cofounder, and signatory to the Agile Manifesto

"In Agile Estimating and Planning, Mike Cohn has, for the first time, brought together most everything that the Agile community has learned about the subject. The book is clear, well organized, and a pleasant and valuable read. It goes into all the necessary detail, and at the same time keeps the reader's burden low. We can dig in as deeply as we need to, without too much detail before we need it. The book really brings together everything we have learned about Agile estimation and planning over the past decade. It will serve its readers well."

—Ron Jeffries, www.XProgramming.com, author of Extreme Programming Installed (Addison-Wesley, 2001) and Extreme Programming Adventures in C# (Microsoft Press, 2004)

"Agile Estimating and Planning provides a view of planning that's balanced between theory and practice, and it is supported by enough concrete experiences to lend it credibility. I particularly like the quote 'planning is a quest for value.' It points to a new, more positive attitude toward planning that goes beyond the 'necessary evil' view that I sometimes hold."

—Kent Beck, author of Extreme Programming Explained, Second Edition (Addison-Wesley, 2005)

"Up-front planning is still the most critical part of software development. Agile software development requires Agile planning techniques. This book shows you how to employ Agile planning in a succinct, practical, and easy-to-follow manner."

—Adam Rogers, Ultimate Software

"Mike does a great follow-up to User Stories Applied by continuing to provide Agile teams with the practical approaches and techniques to increase agility. In this book, Mike provides time-proven and well-tested methods for being successful with the multiple levels of planning and estimating required by Agile. This book is the first to detail the disciplines of Agile estimating and planning, in ways that rival my 1980 civil engineering texts on CPM Planning and Estimating."

—Ryan Martens, President and Founder, Rally Software Development Corporation

"With insight and clarity, Mike Cohn shows how to effectively produce software of high business value. With Agile estimation and planning, you focus effort where it really counts, and continue to do so as circumstances change."

—Rick Mugridge, Rimu Research Ltd., and lead author, Fit for Developing Software (Prentice Hall, 2005)

"Finally! The groundbreaking book my clients have been clamoring for! Agile Estimating and Planning demystifies the process of defining, driving, and delivering great software that matters to the business. Mike's clarity, insight, and experience leap out through every page of this book, offering an approach that is relevant and immediately useful to all members of an Agile project."

—Kert D. Peterson, President, Enterprise Agile Group, LLC

"This isn't yet another generic book on Agile software development. Agile Estimating and Planning fills a gap left by most of the other books and gives you important, practical, down-to-earth techniques needed to be successful on Agile development projects."

—Steve Tockey, Principal Consultant, Construx Software

"Estimation, planning, and tracking is a trinity. If you don't do one of them, you don't need the other two. This book provides very practical knowledge for estimation, planning, prioritizing, and tracking. It should be compulsory subject matter for project managers and their teams, even if they hesitate to call themselves Agile."

—Niels Malotaux, Project Coach

"Effective planning is an important, but often misunderstood, part of any successful Agile project. With Agile Estimating and Planning, Mike Cohn has given us a definitive guide to a wide range of Agile estimating and planning practices. With his clear and practical style, Mike not only explains how to successfully get started planning an Agile project, but also provides a wealth of tips and advice for improving any team's Agile planning process. This book is a must-read for managers, coaches, and members of Agile teams."

—Paul Hodgetts, Agile coach and CEO, Agile Logic

"Mike's writing style captures the essence of agility-just the right amount of information to bring clarity to the reader. This book provides an excellent guide for all Agile practitioners, both seasoned and novice."

—Robert Holler, President and CEO, VersionOne, LLC

"It is as if Mike took the distilled knowledge regarding planning and estimation of a great Agile developer (which he is) and laid out all he knows in an easily understandable manner. More importantly, he has a great mix of concepts with real-world examples finished off with a case study so the reader can relate the information to their own situation. Unless you are already an expert Agile planner and estimator, this book is for you."

—Alan Shalloway, CEO, Senior Consultant, Net Objectives, and coauthor of Design Patterns Explained, Second Edition (Addison-Wesley, 2005)

"Although I had plenty of XP experience before trying out Mike Cohn's Agile planning practices, the effectiveness of the practical and proven techniques in this book blew me away! The book recognizes that people, not tools or processes, produce great software, and that teams benefit most by learning about their project and their product as they go. The examples in the book are concrete, easily grasped, and simply reek of common sense. This book will help teams (whether Agile or not) deliver more value, more often, and have fun doing it! Whether you're a manager or a programmer, a tester or a CEO, part of an Agile team, or just looking for a way to stamp out chaos and death marches, this book will guide you."

—Lisa Crispin, coauthor of Testing Extreme Programming (Addison-Wesley, 2003)

"Mike Cohn does an excellent job demonstrating how an Agile approach can address issues of risk and uncertainty in order to provide more meaningful estimates and plans for software projects."

—Todd Little, Senior Development Manager, Landmark Graphics

"Mike Cohn explains his approach to Agile planning, and shows how 'critical chain' thinking can be used to effectively buffer both schedule and features. As with User Stories Applied, this book is easy to read and grounded in real-world experience."

—Bill Wake, author of Refactoring Workbook (Addison-Wesley, 2003)

"Mike brings this book to life with real-world examples that help reveal how and why an Agile approach works for planning software development projects. This book has great breadth, ranging from the fundamentals of release planning to advanced topics such as financial aspects of prioritization. I can see this book becoming an invaluable aid to Agile project managers, as it provides a wealth of practical tips such as how to set iteration length and boot-strap velocity, and communicate progress."

—Rachel Davies, Independent Consultant

"There has been a need for a solid, pragmatic book on the long-term vision of an Agile Project for project managers. Agile Estimating and Planning addresses this need. It's not theory—this book contains project-tested practices that have been used on Agile projects. As Mike's test subjects, we applied these practices to the development of video games (one of the most unpredictable project environments you can imagine) with success."

—Clinton Keith, Chief Technical Officer, High Moon Studios

"When I first heard Mike Cohn speak, I was impressed by a rare combination of qualities: deep experience and understanding in modern iterative and Agile methods; a drive to find and validate easy, high-impact solutions beyond the status quo of traditional (usually ineffective) methods; and the passion and clarity of a natural coach. These qualities are evident in this wonderful, practical guide. I estimate you won't be disappointed in studying and applying his advice."

—Craig Larman, Chief Scientist, Valtech, and author of Applying UML and Patterns, Third Edition (Prentice Hall, 2005) and Agile and Iterative Development (Addison-Wesley, 2004)

"Agile Estimating and Planning is a critical guide on how to successfully provide value to customers of IT services. This book is filled with clear examples that are essential—from project team... (hide)

Clean code that works--now. This is the seeming contradiction that lies behind much of the pain of programming. Test-driven development replies to this contradiction with a paradox--test the... read more

Clean code that works--now. This is the seeming contradiction that lies behind much of the pain of programming. Test-driven development replies to this contradiction with a paradox--test the program before you write it.

A new idea? Not at all. Since the dawn of computing, programmers have been specifying the inputs and outputs before programming precisely. Test-driven development takes this age-old idea, mixes it with modern languages and programming environments, and cooks up a tasty stew guaranteed to satisfy your appetite for clean code that works--now.

Developers face complex programming challenges every day, yet they are not always readily prepared to determine the best solution. More often than not, such difficult projects generate a great deal of stress and bad code. To garner the strength and courage needed to surmount seemingly Herculean tasks, programmers should look to test-driven development (TDD), a proven set of techniques that encourage simple designs and test suites that inspire confidence.

By driving development with automated tests and then eliminating duplication, any developer can write reliable, bug-free code no matter what its level of complexity. Moreover, TDD encourages programmers to learn quickly, communicate more clearly, and seek out constructive feedback.

Readers will learn to:

Solve complicated tasks, beginning with the simple and proceeding to the more complex.

Write automated tests before coding.

Grow a design organically by refactoring to add design decisions one at a time.

Create tests for more complicated logic, including reflection and exceptions.

Use patterns to decide what tests to write.

Create tests using xUnit, the architecture at the heart of many programmer-oriented testing tools.

This book follows two TDD projects from start to finish, illustrating techniques programmers can use to easily and dramatically increase the quality of their work. The examples are followed by references to the featured TDD patterns and refactorings. With its emphasis on agile methods and fast development strategies, Test-Driven Development is sure to inspire readers to embrace these under-utilized but powerful techniques.

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The definitive, Jolt-award winning guide to learning and using Rails is now in its Second Edition. Rails is a new approach to web-based application development that enables developers... read more

The definitive, Jolt-award winning guide to learning and using Rails is now in its Second Edition. Rails is a new approach to web-based application development that enables developers to create full-featured, sophisticated web-based applications using less code and less effort. Now programmers can get the job done right and still leave work on time.

NEW IN THE SECOND EDITION: The book has been updated to take advantage of all the new Rails 1.2 features. The sample application uses migrations, Ajax, features a REST interface, and illustrates new Rails features. There are new chapters on migrations, active support, active record, and action controller (including the new resources-based routing). The Web 2.0 and Deployment chapters have been completely rewritten to reflect the latest thinking. Now you can learn which environments are best for your style application, and see how Capistrano makes managing your site simple. All the remaining chapters have been extensively updated. Finally, hundreds of comments from readers of the first edition have been incorporated, making this book simply the best available.

Rails is a full-stack, open source web framework that enables you to create full-featured, sophisticated web-based applications with a twist...you can create a full Rails application using less code than the setup XML you'd need just to configure some other frameworks.

With this book, you'll learn how to use Rails Active Record to connect business objects and database tables. No more painful object-relational mapping. Just create your business objects and let Rails do the rest. You'll learn how to use the Action Pack framework to route incoming requests and render pages using easy-to-write templates and components. See how to exploit the Rails service frameworks to send emails, talk to web services, and interact dynamically with JavaScript applications running in the browser (the "Ajax" architecture).

You'll see how easy it is to deploy Rails. You'll be writing applications that work with your favorite database (MySQL, Oracle, Postgres, and more) in no time at all. (hide)

Kent Beck's eXtreme Programming eXplained provides an intriguing high-level overview of the author's Extreme Programming (XP) software development methodology. Written for IS managers, project leaders, or programmers, this... read more

Kent Beck's eXtreme Programming eXplained provides an intriguing high-level overview of the author's Extreme Programming (XP) software development methodology. Written for IS managers, project leaders, or programmers, this guide provides a glimpse at the principles behind XP and its potential advantages for small- to mid-size software development teams.

The book intends to describe what XP is, its guiding principles, and how it works. Simply written, the book avoids case studies and concrete details in demonstrating the efficacy of XP. Instead, it demonstrates how XP relies on simplicity, unit testing, programming in pairs, communal ownership of code, and customer input on software to motivate code improvement during the development process. As the author notes, these principles are not new, but when they're combined their synergy fosters a new and arguably better way to build and maintain software. Throughout the book, the author presents and explains these principles, such as "rapid feedback" and "play to win," which form the basis of XP.

Generally speaking, XP changes the way programmers work. The book is good at delineating new roles for programmers and managers who Beck calls "coaches." The most striking characteristic of XP is that programmers work in pairs, and that testing is an intrinsic part of the coding process. In a later section, the author even shows where XP works and where it doesn't and offers suggestions for migrating teams and organizations over to the XP process.

In the afterword, the author recounts the experiences that led him to develop and refine XP, an insightful section that should inspire any organization to adopt XP. This book serves as a useful introduction to the philosophy and practice of XP for the manager or programmer who wants a potentially better way to build software. --Richard Dragan

Topics covered: Extreme Programming (XP) software methodology, principles, XP team roles, facilities design, testing, refactoring, the XP software lifecycle, and adopting XP. (hide)

As a programmer, you need to be able to recognize and improve problematic code, so the program remains in a working state throughout the software lifecycle. Refactoring-the art... read more

As a programmer, you need to be able to recognize and improve problematic code, so the program remains in a working state throughout the software lifecycle. Refactoring-the art of improving the design of existing code safely-provides an efficient, reliable system for bringing order to the chaos, and one that keeps the surprises to a minimum! Refactoring can be difficult to learn, but Refactoring Workbook, by consultant William C. Wake, presents the material in a easy-learning format that makes learning enjoyable and effective.

For many, the obstacle to learning refactoring is in identifying the "smells"—the potential problem areas-found in code. Instead of having you read about the smells, Refactoring Workbook makes sure you understand them. You'll solve a carefully assembled series of problems, and you'll find yourself learning at a deeper level and arriving at a few insights of your own. Wake uses the workbook method—a learning-focused approach that forces you to apply the techniques presented in the book-in the rest of the book. This approach helps you learn and apply the most important refactoring techniques to your code and, as a side benefit, helps you to think more about creating great code even when you're not refactoring.

Refactoring Workbook provides user-friendly references such as:

• A handy, quick-reference "smell finder"
• A standard format for describing smells
• Appendices showing key refactorings
• A listing of Java™ tools that support refactoring

This book is intended for programmers with a knowledge of Java, though a C# or C++ programmer with a basic understanding of Java would also be able to follow and learn from the examples. It can be used as a companion to Martin Fowler's Refactoring (also from Addison-Wesley Professional), which provides step-by-step instructions for many refactorings.

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Presents the key practices of all Agile development approaches, offers overviews of specific techniques, and show how you can choose the approach that best suits your organization. Softcover.

Presents the key practices of all Agile development approaches, offers overviews of specific techniques, and show how you can choose the approach that best suits your organization. Softcover. (hide)