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arr=[3,4,5,6,7,8,9]
puts arr[0] #3
puts arr.first #3
puts arr[arr.length-1] #9
puts arr[arr.size-1] #9
puts arr.last #9
puts arr[-1] #9
puts arr[-2] #8
print arr[1..3] ,"\n" #456
print arr[-3,4] ,"\n" #789£¬´Ó-3¿ªÊ¼ £¬´òÓ¡4¸öÔªËØ£¬ÕâÀïÖ»ÓÐÈý¸ö
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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.
  ......
The following is improved version of the code created by David Mullet, from
http://rubyonwindows.blogspot.com/2007/03/ruby-ado-and-sqlserver.html
require 'win32ole'
class SqlServer
# This class manages database connection and queries
attr_accessor :connection, :data, :fields
attr_wr ......
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select, select_tag, collection_select(ÆäÓàµÄʲôselect_dateÄÇЩ²»Ì¸)
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</p>
<select
name="ROR">
<option
value="1">ROR1</option><br
/>
<optio ......
ת×Ô http://www.advidea.cn/biancheng/200943135232.html
Ruby watir ²âÊÔ¿ò¼Ü
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Ҳͨ¹ýRuby °²×° gem,
Ò²°²×°ÁËruby IDE¿ª·¢¹¤¾ß£ºnetbeans,
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in `require': no such file to load -- watir (LoadError)
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