benchmark change for rack

gistfile1.rb

require 'benchmark/ips'

class Boo < Hash
  def previous_to_hash
    {}.replace self
  end 

  def new_to_hash
    Hash[self]
  end 
end

boo = Boo.new

Benchmark.ips do |x| 
  x.report('previously') { boo.previous_to_hash }
  x.report('new_to_hash') { boo.new_to_hash }
end