respond_to_vs_include.rb

require 'benchmark'
 
n = 100_000
mock_methods = ('a'..'z').to_a
 
class Mock
end
 
mock_methods.each do |m|
  Mock.class_eval do
    send(:attr_accessor, m)
  end
end
 
mock = Mock.new
instance_meths = Mock.instance_methods(false)

mock_methods.map! { |e| e.to_sym }
 
Benchmark.bmbm(15) do |test|
  mock_methods.each do |meth|
    test.report("respond_to?(#{meth})") do
      n.times do
        mock.respond_to? meth
      end
    end
  end

  mock_methods.each do |meth|
    test.report("include?(#{meth})") do
      n.times do
        instance_meths.include? meth
      end
    end
  end
end

__END__

                      user     system      total        real
respond_to?(a)    0.030000   0.000000   0.030000 (  0.031189)
respond_to?(b)    0.030000   0.000000   0.030000 (  0.031101)
respond_to?(c)    0.030000   0.000000   0.030000 (  0.031507)
respond_to?(d)    0.030000   0.000000   0.030000 (  0.030424)
respond_to?(e)    0.040000   0.000000   0.040000 (  0.030514)
respond_to?(f)    0.030000   0.000000   0.030000 (  0.030814)
respond_to?(g)    0.030000   0.000000   0.030000 (  0.030453)
respond_to?(h)    0.030000   0.000000   0.030000 (  0.030743)
respond_to?(i)    0.030000   0.000000   0.030000 (  0.030704)
respond_to?(j)    0.030000   0.000000   0.030000 (  0.030873)
respond_to?(k)    0.030000   0.000000   0.030000 (  0.030319)
respond_to?(l)    0.030000   0.000000   0.030000 (  0.030522)
respond_to?(m)    0.030000   0.000000   0.030000 (  0.030689)
respond_to?(n)    0.030000   0.000000   0.030000 (  0.030612)
respond_to?(o)    0.030000   0.000000   0.030000 (  0.029768)
respond_to?(p)    0.030000   0.000000   0.030000 (  0.029741)
respond_to?(q)    0.030000   0.000000   0.030000 (  0.029653)
respond_to?(r)    0.030000   0.000000   0.030000 (  0.029917)
respond_to?(s)    0.030000   0.000000   0.030000 (  0.029884)
respond_to?(t)    0.030000   0.000000   0.030000 (  0.029679)
respond_to?(u)    0.030000   0.000000   0.030000 (  0.029821)
respond_to?(v)    0.020000   0.000000   0.020000 (  0.029289)
respond_to?(w)    0.020000   0.000000   0.020000 (  0.029658)
respond_to?(x)    0.030000   0.000000   0.030000 (  0.029806)
respond_to?(y)    0.030000   0.000000   0.030000 (  0.030761)
respond_to?(z)    0.030000   0.000000   0.030000 (  0.029590)
include?(a)       0.020000   0.000000   0.020000 (  0.023256)
include?(b)       0.050000   0.000000   0.050000 (  0.050267)
include?(c)       0.070000   0.000000   0.070000 (  0.070923)
include?(d)       0.090000   0.000000   0.090000 (  0.091891)
include?(e)       0.110000   0.000000   0.110000 (  0.116640)
include?(f)       0.140000   0.000000   0.140000 (  0.141270)
include?(g)       0.160000   0.000000   0.160000 (  0.159342)
include?(h)       0.180000   0.000000   0.180000 (  0.182828)
include?(i)       0.210000   0.000000   0.210000 (  0.206258)
include?(j)       0.220000   0.000000   0.220000 (  0.225916)
include?(k)       0.240000   0.000000   0.240000 (  0.249562)
include?(l)       0.260000   0.000000   0.260000 (  0.267549)
include?(m)       0.300000   0.000000   0.300000 (  0.296218)
include?(n)       0.320000   0.000000   0.320000 (  0.316334)
include?(o)       0.350000   0.000000   0.350000 (  0.350392)
include?(p)       0.370000   0.000000   0.370000 (  0.367885)
include?(q)       0.380000   0.000000   0.380000 (  0.388711)
include?(r)       0.420000   0.000000   0.420000 (  0.423893)
include?(s)       0.440000   0.000000   0.440000 (  0.437467)
include?(t)       0.450000   0.000000   0.450000 (  0.451896)
include?(u)       0.470000   0.000000   0.470000 (  0.470976)
include?(v)       0.490000   0.000000   0.490000 (  0.494128)
include?(w)       0.510000   0.000000   0.510000 (  0.516354)
include?(x)       0.540000   0.000000   0.540000 (  0.534326)
include?(y)       0.550000   0.000000   0.550000 (  0.558297)
include?(z)       0.560000   0.000000   0.560000 (  0.569605)