如何使用||简单编写多个比较使用Ruby on Rails [英] How to simply write multiple comparisons using || with Ruby on Rails

问题描述

我想这样写条件，但是太长了。
如何使其更简单？

I want to write the conditions as such, but it's too long. How can I make it more simple?

if A
  ~~~
elsif B == b || B == c || B == d || B == e   <-- This part is too long.
  ~~~
else
  ~~~
end 

I

elsif B == (b || c || d || e)

推荐答案

if B == b || B == c || B == d || B == e

可以写为

if [b, c, d, e].include?(B)

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