Chapter 1. Hello, Design Patterns!
Almost every computer programming book starts with a "Hello, World!" chapter to introduce the topic. Since this book is all about design patterns, let's start with "Hello, Design Patterns!"
As you've already picked up this book, you are probably familiar with the notion of design patterns in object-oriented programming. A design pattern is useful as an abstraction tool for solving design problems in other fields like engineering and architecture. The notion was borrowed by software development for a similar purpose. A design pattern is a template for an object or class design that solves a recurring problem in a particular domain.
This chapter provides a brief history of design patterns and their relationships ...
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