具有多个条件的一个 if 语句的良好架构 [英] Good architecture for one if statement with many conditions

问题描述

我有一个看起来像这样的 if 语句:

I have an if statement which looks like this:

if conditionA() || conditionB() || conditionC() || conditionD() || conditionE() || condition()
  #do sth
end
#conditionX() methods return true/false

这看起来很难看.有没有什么设计模式可以简化这个?

This looks ugly. Is there any design pattern which would simplify this?

*使用的语言:Ruby.虽然我认为解决方案应该与语言无关

*Language used: Ruby. Although I think a solution should be language-agnostic

推荐答案

如果超出可维护性的条件太多，你能做的最好的事情就是抽象.

If there are too many conditions beyond maintainability, the best thing you can do is abstraction.

• 按功能对类似条件进行分组，并为该功能命名.
• 为每个组创建 Boolean 返回方法，并在 if 块中调用这些方法.

• Group the similar conditions by their functionality and name that functionality.
• Create Boolean returning methods for each group and call those in the if block.

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