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module Log
def Log.i(msg)
print "[INFO]#{msg}\n"
end
def Log.e(msg)
print "[ERROR]#{msg}\n"
end
end
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class UrlObj
attr_accessor :url,:depth,:save_name
def initialize(url,depth,save_name)
@url=url
@save_name=save_name
@depth=depth
end
def info#½âÎöµÃµ½urlÖеÄÐÅÏ¢
return @info if @info
begin
@info=URI.parse(@url)
return @info
rescue Exception=>e
Log.e e
return nil
end
end
def domain#»ñÈ¡urlÖеÄÓòÃû
if @domain
return @domain
elsif !info
Log.e("#{@url}'s host is nil")
return nil
elsif !info.host
Log.e("#{@url}'s host is nil")
return nil
else
return info.host[/\w+\.\w+$/]
end
end
end
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class WebSnatcher
THREAD_SLEEP_TIME=0.5#¶¨Òå³£Á¿£¬Ïß³Ì˯Ãßʱ¼ä
HTTP_RETRY_TIMES=3#ÉèÖôò¿ªÁ´½ÓµÄÖØÊÔ´ÎÊý
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def initialize(opt={})
@url_to_download=[]#´ýÏÂÔØµÄurlÈÝÆ÷
@url_to_download_count=0#´ýÏÂÔØµÄurlÊýÁ¿


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3¡¢requreÒ»°ãÇé¿öÏÂÓÃÓÚ¼ÓÔØ¿âÎļþ£¬¶øloadÔòÓÃÓÚ¼ÓÔØÅ ......

win»·¾³Ï±¾µØ°²×°ruby on rails

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ruby -v ÏÔʾ°æ±¾£¬°²×°³É¹¦
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½âѹ£¬ruby setup.rb
g ......

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puts 3/5#ÕâÀïÊÇÕûÊýÐÎʽµÄ½á¹û
puts 3/5.0#ÕâÀïÊÇСÊýÐÎʽµÄ½á¹û
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puts "Hello Ruby!"; puts "This is a "\
"String";# ......

21±¾¾­µäruby railsµç×ÓÊé


Beginning Ruby from Novice To Perfessional

Head First Rails

Agile Web Development with Rails 3rd Edition(new)

Agile Web Development with Rails 3rd Edition

Agile Web Development with Rails 3rd Editio ......

Install Cassandra with Ruby 1.9.1 on Windows

To get it done is not easy. I spent a whole day to figure out the various compatibility issues along the way out.
Now there still might be potential issues, but it works by my rough test.
Step 1: Install Apache Cassandra
  You may know that the Ruby gem cassandra will do it for you.
  ......
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