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#!/usr/bin/env ruby
# example to explain hold! usage https://github.com/evanphx/benchmark-ips/issues/85
# The hold! feature expects to be run twice, generally with different Rubys.
# hold! can also be used to compare modules changes which impact the run time
# RUN_1: ruby examples/hold.rb
# Warming up --------------------------------------
# without 172.168k i/100ms
# Calculating -------------------------------------
# without 2.656M (± 3.3%) i/s - 13.429M in 5.062098s
#
# RUN_2: WITH_MODULE=true ruby examples/hold.rb
# Warming up --------------------------------------
# with 92.087k i/100ms
# Calculating -------------------------------------
# with 1.158M (± 1.4%) i/s - 5.801M in 5.010084s
#
# Comparison:
# without: 2464721.3 i/s
# with: 1158179.6 i/s - 2.13x slower
require 'benchmark/ips'
Benchmark.ips do |x|
x.report('without') do
'Bruce'.inspect
end
if ENV['WITH_MODULE'] == 'true'
class String
def inspect
result = %w[Bruce Wayne is Batman]
result.join(' ')
end
end
end
x.report('with') do
'Bruce'.inspect
end
x.hold! 'temp_results'
x.compare!
end
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