comparable_bench.rb

# frozen_string_literal: true
require 'benchmark'

class SizeMatters
  include Comparable
  attr :str
  def <=>(other)
    str.size <=> other.str.size
  end
  def initialize(str)
    @str = str
  end
  def inspect
    @str
  end
end

Benchmark.bmbm do |x|
  objA = SizeMatters.new("Z")
  objB = SizeMatters.new("YY")
  objV = SizeMatters.new("XXX")

  x.report "[Integer] Comparable#between?" do
    10000000.times { 10.between?(0, 100) }
  end

  x.report "[Integer] Comparable#clamp" do
    10000000.times { 10.clamp(0, 100) }
  end

  x.report "[String] Comparable#between?" do
    10000000.times { "b".between?("a", "z") }
  end

  x.report "[String] Comparable#clamp" do
    10000000.times { "b".clamp("a", "z") }
  end

  x.report "[String] Comparable#<" do
    10000000.times { "a" < "b" }
  end

  x.report "[Object] Comparable#between?" do
    10000000.times { objV.between?(objA, objB) }
  end

  x.report "[Object] Comparable#clamp" do
    10000000.times { objV.clamp(objA, objB) }
  end

  x.report "[Object] Comparable#<" do
    10000000.times { objA < objB }
  end
end

gistfile1.txt

# ruby -v
ruby 2.4.1p111 (2017-03-22 revision 58053) [x86_64-linux]

# ruby /src/github.com/kei-s/sketch/ruby/comparable_bench.rb
                                    user     system      total        real
[Integer] Comparable#between?   1.430000   0.000000   1.430000 (  1.433425)
[Integer] Comparable#clamp      1.820000   0.000000   1.820000 (  1.818963)
[String] Comparable#between?    1.650000   0.000000   1.650000 (  1.652295)
[String] Comparable#clamp       2.080000   0.000000   2.080000 (  2.083517)
[String] Comparable#<           1.230000   0.000000   1.230000 (  1.231948)
[Object] Comparable#between?    3.680000   0.000000   3.680000 (  3.686492)
[Object] Comparable#clamp       4.930000   0.000000   4.930000 (  4.936528)
[Object] Comparable#<           2.290000   0.000000   2.290000 (  2.285007)

# /usr/local/bin/ruby -v
ruby 2.5.0dev (2017-09-13 trunk 59863) [x86_64-linux]

# ruby /src/github.com/kei-s/sketch/ruby/comparable_bench.rb
                                    user     system      total        real
[Integer] Comparable#between?   1.030000   0.000000   1.030000 (  1.035063)
[Integer] Comparable#clamp      1.030000   0.000000   1.030000 (  1.030999)
[String] Comparable#between?    1.210000   0.000000   1.210000 (  1.216920)
[String] Comparable#clamp       1.460000   0.000000   1.460000 (  1.458329)
[String] Comparable#<           1.080000   0.000000   1.080000 (  1.075610)
[Object] Comparable#between?    3.920000   0.000000   3.920000 (  3.916553)
[Object] Comparable#clamp       5.920000   0.000000   5.920000 (  5.926508)
[Object] Comparable#<           2.730000   0.000000   2.730000 (  2.738756)