| defmodule Bobby.ExVcrProcess do | |
| @moduledoc """ | |
| This GenServer allows calling `start_cassette` / `stop_cassette` from any process | |
| # Instead of | |
| use_cassette("x") do | |
| do_something | |
| end | |
| # can be written as (each line from any process): |
| #!/usr/bin/env ruby | |
| if ENV['B'] | |
| BuiltinRactor = Ractor | |
| Object.send :remove_const, :Ractor | |
| require 'backports/3.0.0/ractor' | |
| puts "Using pure Ruby implementation" | |
| end | |
| # usage `ruby ractor_test.rb <work_length> <num_workers> <num_requests> |
| def Timeout.wake(secs) | |
| Thread.handle_interrupt(Timeout::Error => :on_blocking) do | |
| Timeout.timeout(secs) do | |
| yield | |
| end | |
| end | |
| end | |
| N = 100 | |
| SECS = 0.1 |
| <<~RESULT | |
| Testing 10..100 | |
| current: 389.3 i/s | |
| faster_prime: 269.8 i/s - 1.44x (± 0.00) slower | |
| miller_rabin: 226.5 i/s - 1.72x (± 0.00) slower | |
| Testing 100..1000 | |
| current: 323.4 i/s | |
| faster_prime: 254.4 i/s - 1.27x (± 0.00) slower | |
| miller_rabin: 213.0 i/s - 1.52x (± 0.00) slower |
| # gem install 'benchmark-ips' | |
| require 'benchmark/ips' | |
| long = ' ' * 1_000_000 + 'x' | |
| REGEXP = /\A[[:space:]]*\z/ | |
| [' ', 'hello', long].each do |str| | |
| Benchmark.ips do |x| | |
| x.report('with_regexp') { REGEXP.match? str } |
When looking at RuboCop's code, I noticed a big number of frozen arrays being used only to later call include? on them. This is O(n) instead of O(1).
Trying to convert them to Sets causes major compatibility issues, as well as very frustrating situations (See set.join and array + set) and where the fact that they are now Sets makes them much less efficient (See array & set).
Here are the improvements that would improve Sets:
| require 'pathname' | |
| Pathname('./lib').children.select(&:directory?).map(&:basename).each do |name| | |
| Dir["./lib/#{name}/**/*.rb"].each do |path| | |
| begin | |
| code = File.read(path) | |
| code.gsub!(%r{^(\s*)require (['"])#{name}/([\w/]*)['"]}) do | |
| relative_path = Pathname("./lib/#{name}/#{$3}.rb").relative_path_from(Pathname(path).dirname) | |
| %Q{#{$1}require_relative #{$2}#{relative_path.to_s[0..-4]}#{$2}} | |
| end | |
| File.write(path, code) |
| Homebrew build logs for postgresql on macOS 10.11.6 | |
| Build date: 2013-06-18 03:25:11 |
| require 'fruity' | |
| a = (1..100).to_a.shuffle | |
| compare do | |
| sort { a.sort{|x, y| y <=> x} } | |
| sort_by { a.sort_by{|x| -x} } | |
| reverse { a.sort.reverse } | |
| reverse! { a.sort.reverse! } | |
| end |
| <html> | |
| <head> | |
| <script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script> | |
| <!-- Load plupload and all it's runtimes and finally the jQuery queue widget --> | |
| <script type="text/javascript" src="http://www.plupload.com/plupload/js/plupload.full.js"></script> | |
| <script type="text/javascript" src="http://www.jacklmoore.com/colorbox/jquery.colorbox.js"></script> | |
| <script type="text/javascript"> |