Return empty array (Ruby)

Question

I am trying to create a condition statement in Ruby. If my array of various numbers is empty or nil, it should return an empty array otherwise it should sort the numbers. Th

Answer 1

To fix your code, change what you have to one of the following:

num.nil? || num.empty? ? [] : num.sort

num.nil? ? [] : num.sort

(num || []).sort

num.to_a.sort

The latter two convert num to an empty array if num is nil, then sort the result. See NilClass.to_a.