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Priorities and Queue Lists Resque doesn’t support numeric priorities but instead uses the order of queues you give it. We call this list of queues the “queue list.” Let’s say we add a warm_cache queue in addition to our file_serve queue. We’d now start a worker like so: $ QUEUES=file_serve,warm_cache rake resque:work When the worker [...]
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ruby 正则表达式中的全局变量
February 20th, 2012 
moonfox 在使用sub,gsub 时，正则表达式不中不能使用全局变量 str = "a123b456c789" str.sub(/(a\d+)(b\d+)(c\d+)/,"a=#{$1}, b=#{$2}, c=#{$3}") => "a=, b=, c=" 可以使用 str = "a123b456c789" str.sub(/(a\d+)(b\d+)(c\d+)/,’a=\1, b=\2, c=\3′) => "a=123, b=456, c=789" 或 str = "a123b456c789" str.sub(/(a\d+)(b\d+)(c\d+)/) {"a=#{$1}, b=#{$2}, c=#{$3}"} => "a=123, b=456, c=789"
ruby 正则表达式脱字符
February 15th, 2012 moonfox re = /[^aeiou]/ # Match any character except a, e, i, o, u
ruby 正则表达式获取匹配字符串前后部分
February 13th, 2012 moonfox ruby 正则表达式获取匹配字符串前后部分 a = "Hello gagahappy Hi" refs = a.match(/gagahappy/) refs.pre_match # => "Hello " refs.post_match # => " Hi"
ubuntu 11.10 rvm 安装版ruby openssl解决
February 12th, 2012 moonfox 用rvm 安装ruby1.9.1时，需要openssl的版本为0.98，而系统自带为1.0，造成RUNERR,解决方法如下 rvm pkg install openssl rvm remove 1.9.2 rvm install 1.9.2 –with-openssl-dir=$rvm_path/usr
Error loading gem paths on load path in gem_prelude
February 11th, 2012 moonfox 在用rvm安装ruby后运行gem，出现 Error loading gem paths on load path in gem_prelude can’t modify frozen string :69:in `force_encoding’ :69:in `set_home’ :38:in `dir’ :76:in `set_paths’ :47:in `path’ :286:in `push_all_highest_version_gems_on_load_path’ :355:in `‘ 解决方法：找到 your/home/.rvm/src/ruby-your-version/gem_prelude.rb文件 编辑 def self.set_home(home) home = home.gsub File::ALT_SEPARATOR, File::SEPARATOR if File::ALT_SEPARATOR – @gem_home = home.force_encoding(Encoding.find(’filesystem’)) + @gem_home = home.dup.force_encoding(Encoding.find(’filesystem’) end
Rack::Builder rackup
February 9th, 2012 moonfox rackup converts the supplied rack config file to an instance of Rack::Builder. This is how is happens under the hood ( just so you get an idea ) : config_file = File.read(config) rack_application = eval("Rack::Builder.new { #{config_file} }") And then rackup supplies rack_application to the respective webserver : server.run rack_application, options Very straight forward! In [...]
Eager load application classes
February 8th, 2012 moonfox # Eager load application classes def load_application_classes return if $rails_rake_task if configuration.cache_classes configuration.eager_load_paths.each do |load_path| matcher = /\A#{Regexp.escape(load_path)}(.*)\.rb\Z/ Dir.glob("#{load_path}/**/*.rb").sort.each do |file| require_dependency file.sub(matcher, ‘\1′) end end end end
rails Rails::OrderedOptions
February 7th, 2012 moonfox class Rails::OrderedOptions < Array #:nodoc: def []=(key, value) key = key.to_sym if pair = find_pair(key) pair.pop pair << value else self << [key, value] end end def [](key) pair = find_pair(key.to_sym) pair ? pair.last : nil end def method_missing(name, *args) if name.to_s =~ /(.*)=$/ self[$1.to_sym] = args.first else self[name] end end [...]