第 14 章 选择的名字

Chapter 14 Choosing Names

Selecting names for variables, methods, and other entities is one of the most underrated aspects of software design. Good names are a form of documentation: they make code easier to understand. They reduce the need for other documentation and make it easier to detect errors. Conversely, poor name choices increase the complexity of code and create ambiguities and misunderstandings that can result in bugs. Name choice is an example of the principle that complexity is incremental. Choosing a mediocre name for a particular variable, as opposed to the best possible name, probably won’t have much impact on the overall complexity of a system. However, software systems have thousands of variables; choosing good names for all of these will have a significant impact on complexity and manageability.

为变量，方法和其他实体选择名称是软件设计中被低估的方面之一。良好的名字是一种文档形式：它们使代码更易于理解。它们减少了对其他文档的需求，并使检测错误更加容易。相反，名称选择不当会增加代码的复杂性，并造成可能导致错误的歧义和误解。名称选择是复杂度是递增的原理的一个示例。为特定变量选择一个平庸的名称，而不是最好的名称，这可能不会对系统的整体复杂性产生太大影响。但是，软件系统具有数千个变量。为所有这些选择好名字将对复杂性和可管理性产生重大影响。