Design Patterns in the Real World, an Analysis-Based Approach

Alan Holub takes coders deep into the reality of Gang-of-Four design patterns, those reusable guides to common object-oriented design problems. He deconstructs two significant software programs (Mel Conway's "Game of Life" and a SQL interpreter) to demonstrate how design patterns work and interact in complex ways, share classes with other patterns, and have pros and cons. Each of the three primary design pattern categories, creational, structural, and behavioral are discussed and illustrated.