louis-wu

<?xml version='1.0'?>
<!--
 ! Excerpted from "Enterprise Recipes for Ruby and Rails"
 ! xml file containing credit card transaction.
 ! 应用的目录为： ccdemo/data/cc_xactions/20080729.xml
 -->
<cc-xactions date='20080729'>
  <cc-xaction id='100001' cc-ref='2537403' type='credit' amount='12.00'>
    <text>Monthly bill.</text>
  </cc-xaction>

louis-wu

#---
# 该程序是经典的文件操作程序。
# 在shell里运行：ruby exercise-difference.rb new-inventory.txt old-inventory.txt
#---

#检查运行本程序的参数是否设置正确
def check_usage   # (1)
  unless ARGV.length == 2 
    puts "Usage: differences.rb old-inventory new-inventory"
    exit

louis-wu

#---
# Our job is to take all the CSV files and work out how many of each title we have, 
# as well as the total list price of the books in stock.
# CSV files looks something like this:
# "Date",     "ISBN",         "Amount"
# "20080412", "9781934356104", 39.45
# "20080413", "9781934356166", 45.67
# Excerpted from "Programming Ruby"
#---
class BookInStock      

louis-wu

require 'sinatra'
require 'pathname'

get "/" do
  dir = "./files/"
  @links = Dir[dir+"*"].map { |file| 
    file_link(file)
  }.join
  erb :index
end

louis-wu

#Struct allows you to define classes that contain just data attributes.
Person = Struct.new(:name, :address, :likes)

dave = Person.new('Dave', 'TX')
dave.likes = "Programming Languages"
puts dave

# opening up the class and writing the method
Person = Struct.new(:name, :address, :likes)
class Person

louis-wu

#--
# CodeRay是一个语法高亮的Ruby库.支持的语法包括： Ruby, HTML, RHTML,YAML,SQL等。
# 官方文档： http://coderay.rubychan.de/doc/
# 以下示例来自于： http://hideto.javaeye.com/blog/204525
#--

# 1，安装coderay gem
gem install coderay 

# 2，在application.rb中

louis-wu

#---
# Excerpted from "Programming Ruby", P210-214
# 运行测试：$ spec rspec_tennis_scorer.rb
#---
require "tennis_scorer"

describe TennisScorer, "basic scoring" do
  before(:each) do
    @ts = TennisScorer.new
  end