Ruby best practice : if not empty each do else in one operator

Question

1.I can\'t find an elegant way to write this code:

if array.empty?
  # process empty array
else
  array.each do |el|
    # process el
  end
end

Answer 1

I saw some people asking how to handle this for nil cases.

The trick is to convert it to string. All nils converted to string becomes a empty string, all empty cases continue being empty.

nil.to_s.empty?
"".to_s.empty?

both will return true