| #1 Generate Public & Private Keypair | |
| #2 Create receipt.json - eg below - careful with line-endings, etc if line breaks | |
| #3 Create signature & Encode | |
| openssl dgst -binary -sha1 -sign private.pem receipt.json | openssl base64 > signature.txt | |
| #4 Verify using OpenSSL & public key | |
| openssl base64 -d -in signature.txt -out signature.sha1 | openssl dgst -sha1 -verify public.pem -signature signature.sha1 receipt.json | |
| require 'benchmark' | |
| # 遍历N是否能被从2到sqrt(N)之间的素数整除。若不能则为素数 | |
| def fast(max) | |
| mini = Math.sqrt(max).to_i | |
| sub_primes = sub_primes(mini) | |
| sub_primes + ((mini+1)..max).select{|n| sub_primes.all?{|obj| n % obj > 0 } } | |
| end | |
| def sub_primes(sub) |
| # need gem install benchmark-ips | |
| require 'benchmark/ips' | |
| def slow(&block) | |
| block.call | |
| end | |
| def fast | |
| yield |
常用的几个 Ruby 版本管理工具有：rvm，rbenv，ry，rbfu。rvm 应该是最早出现、使用最多的，因为过于强大以至于违背了某个 Linux 软件开发原则，所以出现了很多轻便的替代者，其中来自 37signals 的 rbenv 就很受欢迎。ry 和 rbfu 看上去更轻便，不过使用不广泛。之前使用过rvm, 这次尝试下rbenv。
我的环境是 Ubuntu14.04
rbenv的源代码托管在github，在终端中，从 github 上将 rbenv 源码 clone 到本地，然后设置 $PATH。
git clone git://github.com/sstephenson/rbenv.git ~/.rbenv
echo 'export PATH="$HOME/.rbenv/bin:$PATH"' >> ~/.bashrc
| # encoding: utf-8 | |
| class ScanChinese | |
| def self.scan(file) | |
| if File.directory?(file) | |
| files = (Dir.entries(file) - %w( . .. )) | |
| dir = files.map{|name| File.join(file, name)} | |
| dir.each do |filename| | |
| if File.directory?(filename) | |
| scan(filename) | |
| else |
| class Array | |
| # 插入排序 | |
| def insert_sort! | |
| (0...self.length).to_a.each do |j| | |
| key = self[j] | |
| i = j - 1; | |
| while i >= 0 and self[i] > key | |
| self[i+1] = self[i] | |
| i = i-1 | |
| end |
| # Rake task to launch multiple Resque workers in development/production with simple management included | |
| require 'resque/tasks' # Require Resque tasks | |
| namespace :workers do | |
| # = $ rake workers:start | |
| # | |
| # Launch multiple Resque workers with the Rails environment loaded, | |
| # so they have access to your models, etc. |
| ewoJInNpZ25hdHVyZSIgPSAiQXBNVUJDODZBbHpOaWtWNVl0clpBTWlKUWJLOEVk | |
| ZVhrNjNrV0JBWHpsQzhkWEd1anE0N1puSVlLb0ZFMW9OL0ZTOGNYbEZmcDlZWHQ5 | |
| aU1CZEwyNTBsUlJtaU5HYnloaXRyeVlWQVFvcmkzMlc5YVIwVDhML2FZVkJkZlcr | |
| T3kvUXlQWkVtb05LeGhudDJXTlNVRG9VaFo4Wis0cFA3MHBlNWtVUWxiZElWaEFB | |
| QURWekNDQTFNd2dnSTdvQU1DQVFJQ0NHVVVrVTNaV0FTMU1BMEdDU3FHU0liM0RR | |
| RUJCUVVBTUg4eEN6QUpCZ05WQkFZVEFsVlRNUk13RVFZRFZRUUtEQXBCY0hCc1pT | |
| QkpibU11TVNZd0pBWURWUVFMREIxQmNIQnNaU0JEWlhKMGFXWnBZMkYwYVc5dUlF | |
| RjFkR2h2Y21sMGVURXpNREVHQTFVRUF3d3FRWEJ3YkdVZ2FWUjFibVZ6SUZOMGIz | |
| SmxJRU5sY25ScFptbGpZWFJwYjI0Z1FYVjBhRzl5YVhSNU1CNFhEVEE1TURZeE5U | |
| SXlNRFUxTmxvWERURTBNRFl4TkRJeU1EVTFObG93WkRFak1DRUdBMVVFQXd3YVVI |
| # See http://help.github.com/ignore-files/ for more about ignoring files. | |
| # | |
| # If you find yourself ignoring temporary files generated by your text editor | |
| # or operating system, you probably want to add a global ignore instead: | |
| # git config --global core.excludesfile ~/.gitignore_global | |
| # Ignore bundler config | |
| /.bundle | |
| # Ignore the default SQLite database. |