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Brutal Refactoring: More Working Effectively with Legacy Code / Edition 1

Brutal Refactoring: More Working Effectively with Legacy Code / Edition 1

by Michael Feathers


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Brutal Refactoring: More Working Effectively with Legacy Code / Edition 1

Most software professionals spend much of their time working with someone else's brutally imperfect code. When you consider the serious constraints that legacy code was created under, it's no surprise it looks so bad. The question is: now what? In Brutal Refactoring, Michael Feathers starts with code bases "as they are," not as "we pretend them to be" - and shows how to aggressively reshape them to make them maintainable and amenable to further development.

Brutal Refactoring takes the next steps beyond all previous refactoring books, including Feathers' own highly-praised Working Effectively with Legacy Code. Feathers shares new insights reflecting all he's learned in the eleven years since that book, and offers the first detailed practical advice on the unique nuances of system-wide refactoring.

Brutal Refactoring demonstrates Feathers' aggressive refactoring techniques through a series of exceptionally realistic case examples, introducing tactical "recipes" and high-level strategies for overcoming a wide range of legacy code challenges. Coverage includes:

  • Making intractable code understandable
  • Componentizing software factory and repository hubs
  • Sensing variables
  • Using in vitro test harnesses and production toggles
  • Mining runtimes
  • Decomposing heavily conditional code
  • Profiling good and bad code bases
  • Detecting and managing code hotspots
  • Uncovering patterns in code duplication
  • Performing domain discovery
  • Managing boundaries between object-oriented and procedural code
  • Using the Twist method to extract classes, and much more

Product Details

ISBN-13: 9780321793201
Publisher: Addison-Wesley
Publication date: 04/09/2019
Pages: 416
Product dimensions: 6.00(w) x 1.25(h) x 9.00(d)

Table of Contents

1. Goal of Work in Legacy Code: Make the Intractable Understandable
2. Componentizing Software Factory and Repository Hubs
3. Sensing Variables and Vise
4. In Vitro Test Harnesses
5. Production Toggles for Aggressive Refactoring
6. Runtime Mining with Hypothesis Logging
7. The Strangler Pattern
8. Testing Fenestras
9. Types of Bad Methods
10. Decomposition of Heavily Conditional Code
11. Scratch Refactoring Techniques
12. Metric Profiles of Good and Bad Code Bases
13. Hotspot Detection and Management
14. Finding Patterns in Duplication
15. Domain Discovery
16. Managing the OO/Procedural Boundary
17. The Twist Method for Class Extraction