deep_copy_comparison.rb

class Node
  attr_accessor :children
  attr_accessor :title

  def general_deep_copy
    Marshal.load(Marshal.dump(self))
  end

  def specific_deep_copy
    Node.new(@title,children.map(&:specific_deep_copy))
  end

  def initialize(title_,children_ = [])
    @title = title_
    @children = children_
  end

  def inspect
    if children.empty?
      title.is_a?(String) ? title : "<#{title}></#{title}>"
    else
      "<#{title}>#{children.map(&:inspect).join("")}</#{title}>"
    end
  end
end

def prof(t = 1)
  starting_time = Time.now
  t.times { yield }
  dlta = (Time.now-starting_time).to_f/t
  puts "time: #{dlta.to_s}(s) . req/s: #{(1/dlta)}"
  "time: #{dlta.to_s}(s) . req/s: #{(1/dlta)}"
end

root = Node.new(:html,[Node.new(:head),Node.new(:body,[Node.new(:div,[Node.new(:inner_html,[Node.new('hello world')])])])])

puts 'general deep copy:'
prof(100000) {
  root.general_deep_copy
}
puts root.general_deep_copy.inspect

puts
puts

puts 'specific deep copy:'
prof(100000) {
  root.specific_deep_copy
}
puts root.specific_deep_copy.inspect