December 2013
Intermediate to advanced
532 pages
14h 31m
English
Content preview from PHP Objects, Patterns, and Practice, Fourth Edition
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CHAPTER 8
Some Pattern Principles
Although design patterns simply describe solutions to problems, they tend to emphasize solutions that promote reusability and flexibility. To achieve this, they manifest some key object-oriented design principles. We will encounter some of them in this chapter and in more detail throughout the rest of the book.
This chapter will cover:
- Composition: How to use object aggregation to achieve greater flexibility than you could with inheritance alone
- Decoupling: How to reduce dependency between elements in a system
- The power of the interface: Patterns and polymorphism
- Pattern categories: The types of pattern that ...
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