Design Patterns Explained

Part Overview
PART III
Design Patterns
This part introduces design patterns: what they are and how to
use them. Four patterns pertinent to the CAD/CAM problem
(Chapter 3, "A Problem That Cries Out for Flexible Code") are
described. They are presented individually and then related to the
earlier problem. In learning these patterns, I emphasize the
object-oriented strategies espoused by the Gang of Four (as the
authors Gamma, Helm, Johnson, and Vlissides are often referred to)
in their seminal work, Design Patterns: Elements of Reusable
Object-Oriented Software.
Chapter Discusses These Topics
5 • An introduction to design patterns.
• The concept of design patterns, their origins in architec
ture, and how they apply in the discipline of software
design.
• The motivations for studying design patterns.
6 • The Facade pattern: what it is, where it is used, and
how it is implemented.
• How the Facade pattern relates to the CAD/CAM
problem.
7 • The Adapter pattern: what it is, where it is used, and
how it is implemented.
• Comparison between the Adapter pattern and the
Facade pattern.
• How the Adapter pattern relates to the CAD/CAM
problem.
In this part
69