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begin
require "bundler/inline"
rescue LoadError => e
$stderr.puts "Bundler version 1.10 or later is required. Please update your Bundler"
raise e
end
gemfile(true) do
source "https://rubygems.org"
gem "rails", github: "rails/rails"
gem "arel", github: "rails/arel"
gem "benchmark-ips"
end
require "active_support"
require "active_support/core_ext/object/blank"
# Your patch goes here.
class String
def fast_blank?
true
end
end
# Enumerate some representative scenarios here.
#
# It is very easy to make an optimization that improves performance for a
# specific scenario you care about but regresses on other common cases.
# Therefore, you should test your change against a list of representative
# scenarios. Ideally, they should be based on real-world scenarios extracted
# from production applications.
SCENARIOS = {
"Empty" => "",
"Single Space" => " ",
"Two Spaces" => " ",
"Mixed Whitspaces" => " \t\r\n",
"Very Long String" => " " * 100
}
SCENARIOS.each_pair do |name, value|
puts
puts " #{name} ".center(80, "=")
puts
Benchmark.ips do |x|
x.report("blank?") { value.blank? }
x.report("fast_blank?") { value.fast_blank? }
x.compare!
end
end
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