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#!/usr/bin/env ruby
$: << File.dirname(__FILE__)+'/lib'
require 'benchmark/ips'
require 'fast_blank'
class String
# active support implementation
def slow_blank?
/\A[[:space:]]*\z/ === self
end
def new_slow_blank?
empty? || !(/[[:^space:]]/ === self)
end
end
test_strings = [
"",
"\r\n\r\n ",
"this is a test",
" this is a longer test",
" this is a longer test
this is a longer test
this is a longer test
this is a longer test
this is a longer test"
]
test_strings.each do |s|
raise "failed on #{s.inspect}" if s.blank? != s.slow_blank?
raise "failed on #{s.inspect}" if s.blank? != s.new_slow_blank?
end
test_strings.each do |s|
puts "\n================== Test String Length: #{s.length} =================="
Benchmark.ips do |x|
x.report("Fast Blank") do |times|
i = 0
while i < times
s.blank?
i += 1
end
end
x.report("Fast ActiveSupport") do |times|
i = 0
while i < times
s.blank_as?
i += 1
end
end
x.report("Slow Blank") do |times|
i = 0
while i < times
s.slow_blank?
i += 1
end
end
x.report("New Slow Blank") do |times|
i = 0
while i < times
s.new_slow_blank?
i += 1
end
end
x.compare!
end
end
# ================== Test String Length: 0 ==================
# Calculating -------------------------------------
# Fast Blank 225.251k i/100ms
# Fast ActiveSupport 225.676k i/100ms
# Slow Blank 110.934k i/100ms
# New Slow Blank 221.792k i/100ms
# -------------------------------------------------
# Fast Blank 29.673M (± 2.7%) i/s - 148.215M
# Fast ActiveSupport 28.249M (± 3.5%) i/s - 141.048M
# Slow Blank 2.158M (± 3.3%) i/s - 10.872M
# New Slow Blank 23.558M (± 3.2%) i/s - 117.772M
#
# Comparison:
# Fast Blank: 29673200.1 i/s
# Fast ActiveSupport: 28248894.5 i/s - 1.05x slower
# New Slow Blank: 23557900.0 i/s - 1.26x slower
# Slow Blank: 2157787.7 i/s - 13.75x slower
#
#
# ================== Test String Length: 6 ==================
# Calculating -------------------------------------
# Fast Blank 201.185k i/100ms
# Fast ActiveSupport 205.076k i/100ms
# Slow Blank 102.061k i/100ms
# New Slow Blank 123.087k i/100ms
# -------------------------------------------------
# Fast Blank 13.894M (± 2.3%) i/s - 69.409M
# Fast ActiveSupport 14.627M (± 3.5%) i/s - 73.212M
# Slow Blank 1.943M (± 2.3%) i/s - 9.798M
# New Slow Blank 2.796M (± 1.8%) i/s - 14.032M
#
# Comparison:
# Fast ActiveSupport: 14627063.7 i/s
# Fast Blank: 13893631.2 i/s - 1.05x slower
# New Slow Blank: 2795783.3 i/s - 5.23x slower
# Slow Blank: 1943025.9 i/s - 7.53x slower
#
#
# ================== Test String Length: 14 ==================
# Calculating -------------------------------------
# Fast Blank 220.004k i/100ms
# Fast ActiveSupport 219.716k i/100ms
# Slow Blank 147.399k i/100ms
# New Slow Blank 106.651k i/100ms
# -------------------------------------------------
# Fast Blank 24.949M (± 3.0%) i/s - 124.742M
# Fast ActiveSupport 24.491M (± 3.3%) i/s - 122.382M
# Slow Blank 4.292M (± 1.6%) i/s - 21.520M
# New Slow Blank 2.115M (± 2.4%) i/s - 10.665M
#
# Comparison:
# Fast Blank: 24948558.8 i/s
# Fast ActiveSupport: 24491245.1 i/s - 1.02x slower
# Slow Blank: 4292490.5 i/s - 5.81x slower
# New Slow Blank: 2115097.6 i/s - 11.80x slower
#
#
# ================== Test String Length: 24 ==================
# Calculating -------------------------------------
# Fast Blank 206.555k i/100ms
# Fast ActiveSupport 208.513k i/100ms
# Slow Blank 137.733k i/100ms
# New Slow Blank 101.215k i/100ms
# -------------------------------------------------
# Fast Blank 16.761M (± 2.7%) i/s - 83.861M
# Fast ActiveSupport 17.710M (± 3.2%) i/s - 88.618M
# Slow Blank 3.744M (± 2.0%) i/s - 18.732M
# New Slow Blank 1.962M (± 2.7%) i/s - 9.818M
#
# Comparison:
# Fast ActiveSupport: 17709936.5 i/s
# Fast Blank: 16760839.7 i/s - 1.06x slower
# Slow Blank: 3744048.4 i/s - 4.73x slower
# New Slow Blank: 1961831.1 i/s - 9.03x slower
#
#
# ================== Test String Length: 136 ==================
# Calculating -------------------------------------
# Fast Blank 201.772k i/100ms
# Fast ActiveSupport 189.120k i/100ms
# Slow Blank 129.439k i/100ms
# New Slow Blank 90.677k i/100ms
# -------------------------------------------------
# Fast Blank 16.718M (± 2.8%) i/s - 83.534M
# Fast ActiveSupport 17.617M (± 3.6%) i/s - 87.941M
# Slow Blank 3.725M (± 3.0%) i/s - 18.639M
# New Slow Blank 1.940M (± 4.8%) i/s - 9.702M
#
# Comparison:
# Fast ActiveSupport: 17616782.1 i/s
# Fast Blank: 16718307.8 i/s - 1.05x slower
# Slow Blank: 3725097.6 i/s - 4.73x slower
# New Slow Blank: 1940271.2 i/s - 9.08x slower
#
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