From: rrajeshh@...
Date: 2007-11-21T01:00:10+09:00
Subject: Arrays not working as I expected - help

Hi
I am new programmer to Ruby. Just 1 days old. I do have some
background in java.

I am having a problem that is troubling me since yesterday and having
spend several hours on it, I still dont have any idea.

CODE WORKING GREAT BELOW

require 'rubygems'
require 'hpricot'
require 'open-uri'

	page = Hpricot(open("http://finance.google.com/finance/historical?
q=ORCL&histperiod=weekly&start=01&num=2"))

	 page.search("#prices").each do |timesection|

    	values=timesection.search("td")
		datePointValue = {
			"date" 	=> values[0].inner_html,
			"open" 	=> values[1].inner_html,
			"high" 	=> values[2].inner_html,
			"low"  	=> values[3].inner_html,
			"close"	=> values[4].inner_html,
			"volume" => values[5].inner_html
		}

		datePointValue.each do |key, value|
			puts key + " - " + value
		end
    end


But when I add a loop and change the code as follows. It gives me
error message
UPDATED CODE - NOT WORKING -

	page = Hpricot(open("http://finance.google.com/finance/historical?
q=ORCL&histperiod=weekly&start=01&num=1"))

	 page.search("#prices").each do |timesection|

    	timesection.search("tr").each do |datePointSets|
			values = datePointSets.search("td")

			datePointValue = {
				"date" 	=> values[0].inner_html,
				"open" 	=> values[1].inner_html,
				"high" 	=> values[2].inner_html,
				"low"  	=> values[3].inner_html,
				"close"	=> values[4].inner_html,
				"volume" => values[5].inner_html
			}

			datePointValue.each do |key, value|
				puts key + " - " + value
			end
		end
    end

ERROR MESSAGE
htest.rb:14: undefined method `inner_html' for nil:NilClass
(NoMethodError)
        from htest.rb:10:in `each'
        from htest.rb:10
        from htest.rb:8:in `each'
        from htest.rb:8

Kindly suggest.