gistfile1.rb

require 'Benchmark'

class OldFashioned
  def self.call(i)
    x = 2+i
  end
end

class NewFangled
  def self.call(i)
    x = Fangler.new.add i
    y = Fangler.new.bar i
  end
  
  class Fangler
   ALLOWED = [:add, :other, :more, :different, :wut]
    def method_missing(method, *args, &block)
      Adder.send(method, *args) if ALLOWED.include? method
    end
  end
  
  class Adder
    def self.add(i)
      x = 2 + i
    end
    
    def self.bar(i)
      x  = 3* i
    end
  end
  
end

times = 10000

time = Benchmark.realtime do
  (1..times).each {  |i| 
    OldFashioned.call i
  }
end
puts "elapsed #{time*1000} ms"

time = Benchmark.realtime do
  (1..times).each {  |i| 
    NewFangled.call i
  }
end
puts "elapsed #{time*1000} ms"