Benchmark Ruby Date Operations

dateperf.rb

require "benchmark/ips"
require "date"
base = Date.new(Date.today.year)
Benchmark.ips do |x|
  x.compare!

  x.report("int 1") { base + (100) }
  x.report("int 2") { base + (100 - 1) }
  x.report("int 3") { base + (100 - 1 - 1) }
  x.report("int 4") { base + (100 - 1 - 1 - 1) }
  x.report("int 5") { base + (100 - 1 - 1 - 1 - 1) }
  x.report("date 1") { base + 100 - 1 }
  x.report("date 2") { base + 100 - 1 }
  x.report("date 3") { base + 100 - 1 - 1 }
  x.report("date 4") { base + 100 - 1 - 1 }
  x.report("date 5") { base + 100 - 1 - 1 }
end



# Comparison:
#               int 2:  4327503.9 i/s
#               int 1:  4313658.2 i/s - same-ish: difference falls within error
#               int 5:  4128303.4 i/s - 1.05x  (± 0.00) slower
#               int 3:  4115620.3 i/s - 1.05x  (± 0.00) slower
#               int 4:  4110523.2 i/s - same-ish: difference falls within error
#              date 1:  1987276.0 i/s - 2.18x  (± 0.00) slower
#              date 2:  1951796.9 i/s - 2.22x  (± 0.00) slower
#              date 3:  1275165.1 i/s - 3.39x  (± 0.00) slower
#              date 4:  1273855.2 i/s - 3.40x  (± 0.00) slower
#              date 5:  1262090.7 i/s - 3.43x  (± 0.00) slower