| # simulate template rendering | |
| class Template < Struct.new(:name) | |
| def render | |
| puts "#{name}_begin" | |
| r = "#{name}_begin\n" | |
| r << yield if block_given? | |
| puts "#{name}_end\n" | |
| r << "#{name}_end\n" | |
| end | |
| end |
| def try(title, options = { }, &p) | |
| tried_times = 0 | |
| max_times = options[:max_times] || 3 | |
| exceptions = options[:on] || Exception | |
| exceptions = [exceptions] if !exceptions.is_a?(Array) | |
| rescue_text = <<-EOF | |
| begin | |
| # 不能用yield | |
| p.call | |
| rescue #{exceptions.join(',')} => e |
| # 拷贝于 https://github.com/calebx/number_to_cn | |
| module NumberToCn | |
| CN_T_TRANS = [ "", "壹", "贰", "叁", "肆", "伍", "陆", "柒", "捌", "玖", "拾" ] | |
| CN_T_TRANS_WITH_ZERO = [ "零", "壹", "贰", "叁", "肆", "伍", "陆", "柒", "捌", "玖", "拾" ] | |
| CN_T_POSITION = [ "", "拾", "佰", "仟" ] | |
| CN_T_BIG = [ "", "萬", "亿", "萬"] | |
| def to_cn_words | |
| if self.class == Fixnum |
| # 用于维护状态列表 | |
| # Example: | |
| # | |
| # sm = CodeNoteMapper.new({ | |
| # '-3' => '购买彩票失败', | |
| # '-1' => ['默认', '未做任何处理'], | |
| # '0' => '投注成功', | |
| # '1' => '购买彩票成功' | |
| # }) | |
| # sm['默认'].code #=> '-1' |
| # 计算排列组合 | |
| module LotMath | |
| extend self | |
| # 阶乘 | |
| def F(n) | |
| return 1 if n == 0 | |
| (1..n).inject(:*) | |
| end |
| # -*- coding: utf-8 -*- | |
| # 竞彩注码算法 | |
| # 用例 | |
| # teams = [ | |
| # [1, '3', '0', '*'], | |
| # [2, '3', '-'], | |
| # [3, '3', '-'], | |
| # [4, '3', '1', '*'], | |
| # [5, '3', '0', '*'], | |
| # [6, '3', '1', '-'], |
| class Dogmatism | |
| def initialize(process_name) | |
| @process_name = process_name | |
| @uuid = SecureRandom.uuid | |
| end | |
| def protect | |
| begin | |
| if File.exists? pidfile_path |
| # 用于维护状态列表 | |
| # Example: | |
| # | |
| # sm = StatusMapper.new({ | |
| # '购买彩票失败' => '-3', | |
| # '默认' => ['-1', '未做任何处理'], | |
| # '投注成功' => '0', | |
| # '购买彩票成功' => '1' | |
| # }) | |
| # sm['默认'].code #=> '-1' |
install CentOS 6
yum update
yum upgrade
check the server time. sync the time to a time server if needed (service 'ntpd')
download and install Postgresql Server v9.1 rpm package:
rpm -Uvh http://yum.pgrpms.org/9.1/redhat/rhel-6-x86_64/pgdg-centos91-9.1-4.noarch.rpm
This should have installed the necessary server package: postgresql91-server.x86_64.
| class Lisp | |
| def initialize | |
| @env = { | |
| :label => lambda { |(name,val), _| @env[name] = val }, | |
| :quote => lambda { |sexpr, _| sexpr[0] }, | |
| :car => lambda { |(list), _| list[0] }, | |
| :cdr => lambda { |(list), _| list.drop 1 }, | |
| :cons => lambda { |(e,cell), _| [e] + cell }, | |
| :eq => lambda { |(l,r), _| l == r }, | |
| :if => lambda { |(cond, thn, els), ctx| eval(cond, ctx) ? eval(thn, ctx) : eval(els, ctx) }, |