良好的架构为一个if语句有很多条件 [英] Good architecture for one if statement with many conditions

问题描述

我有一个if语句，如下所示：

I have an if statement which looks like this:

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

这看起来很丑陋。有没有任何设计模式可以简化？

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

*使用的语言：Ruby。虽然我认为一个解决方案应该是语言无关的

*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，最好的事情是抽象的。

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

• 通过功能组合类似的条件，并命名该功能。


• 创建 Boolean 返回每个组的方法，并调用中的那些，如果块。

• 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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