Style/MultipleComparison benchmark

benchmark_style_multiple_comparison.rb

require 'benchmark'

def test_conditionals(n)
  n == 1 || n == 2 || n == 3 || n == 4 || n == 5 || n == 6 || n == 7
end

def test_include(n)
  [1, 2, 3, 4, 5, 6, 7].include?(n)
end

n = 100_000
Benchmark.bmbm(15) do |x|
  x.report("conditionals first")   { n.times { test_conditionals(1) } }
  x.report("Array#include? first") { n.times { test_include(1)      } }
  x.report("conditionals mid")     { n.times { test_conditionals(4) } }
  x.report("Array#include? mid")   { n.times { test_include(4)      } }
  x.report("conditionals last")    { n.times { test_conditionals(7) } }
  x.report("Array#include? last")  { n.times { test_include(7)      } }
end

# >>                            user     system      total        real
# >> conditionals first     0.004439   0.000002   0.004441 (  0.004440)
# >> Array#include? first   0.008101   0.000002   0.008103 (  0.008103)
# >> conditionals mid       0.006777   0.000000   0.006777 (  0.006777)
# >> Array#include? mid     0.009760   0.000002   0.009762 (  0.009761)
# >> conditionals last      0.009099   0.000001   0.009100 (  0.009100)
# >> Array#include? last    0.011387   0.000002   0.011389 (  0.011390)

Dude, you are the man. That's awesome.