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rklemme / respond_to_vs_include.rb

Last active 2013-04-03 — forked from zeroed/respond_to_vs_include.rb

# Fancy benchmark...
# is respond_to? so faster than include?
 
require 'benchmark'
 
n = 10_000_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)
 
Benchmark.bm(15) do |test|
  test.report('respond_to?: ') do
    n.times do
      mock.respond_to? :k
    end
  end
  test.report('include?: ') do
    n.times do
      instance_meths.include? :k
    end
  end
  test.report('instance_methods.include?: ') do
    n.times do
      Mock.instance_methods(false).include? :k
    end
  end
end

$ ruby respond_to_vs_include-RK.rb
                                               user     system      total        real
respond_to?:                               1.170000   0.000000   1.170000 (  1.167067)
include?:                                  7.862000   0.000000   7.862000 (  7.880450)
instance_methods.include?:               152.242000   0.000000 152.242000 (152.295711)