dup_vs_clone.rb

#The clone method also copies over the singleton methods of the receiver
porsche = Object.new
def porsche.number_of_wheels
  4
end

puts "porsche has #{porsche.number_of_wheels}"
porsche_clone = porsche.clone

puts "porsche's clone has #{porsche_clone.number_of_wheels}"

#The dup method does NOT copy over singleton methods
                                            
porsche_dup = porsche.dup

#This throws a NoMethodError
#puts "porsche's dup has #{porsche_dup.number_of_wheels}"