title: Ruby does string equal one of the strings in an array of strings?
body: <p>Is there an easy way to sort of call something similar to the database In query?</p>
  
  <p>Does "mystring" exist in ["string1","mystring","string2"] => would return true</p>
  
  <p>Does "mystring" exist in ["string1","string2","string3"] => would return false</p>