一致性不仅意味着相似的事情应该以相似的方式完成，而且不同的事情也应该以不同的方式完成。如果您对一致性过于热衷，并试图将不同的事物强制采用相同的方法，例如对确实不同的事物使用相同的变量名，或者对不适合该模式的任务使用现有的设计模式，那么会造成复杂性和混乱。一致性只有在开发人员确信“如果看起来像 x 时，它确实是 x”时才有好处。
一致性是投资心态的另一个例子。确保一致性的工作将需要一些额外的工作：确定约定，创建自动检查程序，寻找类似情况以模仿新代码，以及进行代码审查以教育团队。这项投资的回报是您的代码将更加明显。开发人员将能够更快，更准确地了解代码的行为，这将使他们能够以更少的错误来更快地工作。
Consistency means not only that similar things should be done in similar ways, but that dissimilar things should be done in different ways. If you become overzealous about consistency and try to force dissimilar things into the same approach, such as by using the same variable name for things that are really different or using an existing design pattern for a task that doesn’t fit the pattern, you’ll create complexity and confusion. Consistency only provides benefits when developers have confidence that “if it looks like an x, it really is an x.”
Consistency is another example of the investment mindset. It will take a bit of extra work to ensure consistency: work to decide on conventions, work to create automated checkers, work to look for similar situations to mimic in new code, and work in code reviews to educate the team. The return on this investment is that your code will be more obvious. Developers will be able to understand the code’s behavior more quickly and accurately, and this will allow them to work faster, with fewer bugs.