Table of Contents
Chapter 1. Welcome to Design Patterns....................................................... 1
Section 1.1. It started with a simple SimUDuck app....................................................................................................................... 2
Section 1.2. But now we need the ducks to FLY............................................................................................................................. 3
Section 1.3. But something went horribly wrong........................................................................................................................... 4
Section 1.4. Joe thinks about inheritance....................................................................................................................................... 5
Section 1.5. Sharpen your pencil..................................................................................................................................................... 5
Section 1.6. How about an interface?............................................................................................................................................. 6
Section 1.7. What would you do if you were Joe?........................................................................................................................... 7
Section 1.8. The one constant in software development................................................................................................................ 8
Section 1.9. Sharpen your pencil.................................................................................................................................................... 8
Section 1.10. Zeroing in on the problem......................................................................................................................................... 9
Section 1.11. Separating what changes from what stays the same............................................................................................... 10
Section 1.12. Designing the Duck Behaviors.................................................................................................................................. 11
Section 1.13. Implementing the Duck Behaviors.......................................................................................................................... 13
Section 1.14. There are no Dumb Questions................................................................................................................................. 14
Section 1.15. Sharpen your pencil.................................................................................................................................................. 14
Section 1.16. Integrating the Duck Behavior................................................................................................................................. 15
Section 1.17. More Integration...................................................................................................................................................... 16
Section 1.18. Testing the Duck code.............................................................................................................................................. 18
Section 1.19. Setting behavior dynamically.................................................................................................................................. 20
Section 1.20. The Big Picture on encapsulated behaviors............................................................................................................ 22
Section 1.21. HAS-A can be better than IS-A................................................................................................................................ 23
Section 1.22. Speaking of Design Patterns................................................................................................................................... 24
Section 1.23. Design Puzzle........................................................................................................................................................... 25
Section 1.24. Overheard at the local diner.................................................................................................................................... 26
Section 1.25. Overheard in the next cubicle.................................................................................................................................. 27
Section 1.26. The power of a shared pattern vocabulary............................................................................................................. 28
Section 1.27. How do I use Design Patterns?............................................................................................................................... 29
Section 1.28. There are no Dumb Questions................................................................................................................................ 29
Section 1.29. Skeptical Developer-Friendly Patterns Guru......................................................................................................... 30
Section 1.30. Tools for your Design Toolbox................................................................................................................................ 32
Section 1.31. Design Puzzle Solution............................................................................................................................................ 34
Section 1.32. Solutions.................................................................................................................................................................. 35
Chapter 1. Welcome to Design Patterns
Chapter 1. Welcome to Design Patterns
Head First Design Patterns By Eric Freeman, Elisabeth Freeman, Bert Bates, Kathy Sierra
ISBN: 0596007124 Publisher: O'Reilly
Prepared for Ann Cherkis, Safari ID: maottw@gmail.com
Print Publication Date: 2004/10/25 User number: 1673621 Copyright 2008, Safari Books Online, LLC.
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