Test if variable matches any of several strings w/o long if-elsif chain, or case-when

Question

I assume there is a nice one-line way to say in ruby

if mystr == \"abc\" or \"def \" or \"ghi\" or \"xyz\"

but cannot find how to do that i

Answer 1

You can use Array#include? like this:

if ["abc", "def ", "ghi", "xyz"].include?(mystr)