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Working Effectively with Legacy Code

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Working Effectively with Legacy Code

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  • About eBook Formats
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    ePub EPUB The open industry format known for its reflowable content and usability on supported mobile devices.

    MOBI MOBI The eBook format compatible with the Amazon Kindle and Amazon Kindle applications.

    Adobe Reader PDF The popular standard, used most often with the free Adobe® Reader® software.

    This eBook requires no passwords or activation to read. We customize your eBook by discreetly watermarking it with your name, making it uniquely yours.

Description

  • Copyright 2005
  • Dimensions: 7" x 9-1/4"
  • Pages: 464
  • Edition: 1st
  • Book
  • ISBN-10: 0-13-117705-2
  • ISBN-13: 978-0-13-117705-5

This book provides programmers with the ability to cost effectively handlecommon legacy code problems without having to go through the hugelyexpensive task of rewriting all existing code. It describes a series of practicalstrategies that developers can employ to bring their existing softwareapplications under control. The author provides useful guidance about how touse these strategies when refactoring or making functional changes to codebases. One of the book's key points is that it teaches developers to write teststhat can be used to make sure they are not unintentionally changing theapplication as they optimize it. Examples are provided in Java, C++, and Csharp,and the book assumes that the reader has some knowledge of UMLnotation. Strategies using UML and code in C++ and Java primarily whilelanguage independent advice will be delivered in side bars and appendices forlanguage specific users.

Extras

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Sample Content

Online Sample Chapters

Changing Software and Legacy Code

Testing Effectively With Legacy Code

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Download Chapter 1 of this title.

Download Chapter 4 of this title.

Table of Contents

Preface.

Introduction.

I. THE MECHANICS OF CHANGE.

  1. Changing Software.

  2. Working with Feedback.

  3. Sensing and Separation.

  4. The Seam Model.

  5. Tools.

II. CHANGING SOFTWARE.

  6. I Don’t Have Much Time and I Have To Change It.

  7. It Takes Forever To Make a Change.

  8. How Do I Add a Feature?

  9. I Can’t Get This Class into a Test Harness.

10. I Can’t Run This Method into a Test Harness.

11. I Need to Make a Change.   What Methods Should I Test?

12. I Need to Make Many Changes In One Area Do I Have To Break.

13. I Need To Make a Change but I Don’t Know What Tests To Write.

14. Dependencies on Libraries Are Killing Me.

15. My Application Is All API Calls.

16. I Don’t Understand the Code Well Enough To Change It.

17. My Application Has No Structure.

18. My Test Code Is in the Way.

19. My Project Is Not Object-Oriented.   How Do I Make Safe Changes?

20. This Class Is Too Big and I Don’t Want It to Get Any Bigger.

21. I’m Changing The Same Code All Over the Place.

22. I Need To Change a Monster Method and I Can’t Write Tests for It.

23. How Do I Know That I’m Not Breaking Anything?

24. We Feel Overwhelmed. It Isn’t Going To Get Any Better.

III. DEPENDENCY BREAKING TECHNIQUES.

25. Dependency Breaking Techniques.

Appendix: Refactoring.

Glossary.

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