Chapter 1, Introduction to patterns, introduces the concept of patterns. We'll see why patterns are useful and how they should be used in programming. The book will explore the difference between design principles, patterns, and idioms. It will present a hierarchical overview of design patterns, talk a bit about anti-patterns, and finish with a description of some important design principles.
Chapter 2, Singleton, Dependency Injection, Lazy Initialization, and Object Pool, covers four patterns from the creational group. The chapter will firstly look into the singleton pattern, which makes sure that a class has only one instance. Next in line, the dependency injection pattern makes program architecture more flexible ...
