dci_no_method_call.rb

require 'rubygems'
require 'benchmark/ips'

class ExampleClass
  def foo; 42; end
end

module ExampleMixin
  def foo; 43; end
end

Benchmark.ips do |bm|
  bm.report("without dci") { ExampleClass.new }
  bm.report("with dci") do
    obj = ExampleClass.new
    obj.extend(ExampleMixin)
  end
end

no_method_call

Calculating -------------------------------------
         without dci     79043 i/100ms
            with dci     24489 i/100ms
-------------------------------------------------
         without dci  3017563.1 (±2.6%) i/s -   15097213 in   5.006974s
            with dci   558150.9 (±3.2%) i/s -    2791746 in   5.006372s

with_method_call

Calculating -------------------------------------
         without dci     71499 i/100ms
            with dci     24065 i/100ms
-------------------------------------------------
         without dci  2680264.1 (±1.2%) i/s -   13441812 in   5.015815s
            with dci   532601.9 (±3.6%) i/s -    2671215 in   5.021179s