第 4 章 模块应该是深的

Chapter 4 Modules Should Be Deep

One of the most important techniques for managing software complexity is to design systems so that developers only need to face a small fraction of the overall complexity at any given time. This approach is called modular design, and this chapter presents its basic principles.

管理软件复杂性最重要的技术之一就是设计系统，以便开发人员在任何给定时间只需要面对整体复杂性的一小部分。这种方法称为模块化设计，本章介绍其基本原理。