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

Assuming that "process empty array" leaves it empty after processing, you can leave out the else:

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

or in one line:

array.empty? ? process_empty_array : array.each { |el| process_el }