From: Naresh Ramaswamy <tech4me@...>
Date: 2009-02-24T19:57:39+09:00
Subject: Error in While Loop

Following is my Ruby Code Wherein I am reading an XML file.
I am afraid why my loop is not getting incremented for value of i.
Attached is the XML file for your referance.

********************************
require 'rexml/document'
require 'rio'
include REXML

$doc = Document.new File.new("script_data.xml")

$TXN = XPath.match($doc, "//TXN[@value]")

$i = 0

def check
  @a = $TXN.size
  while $i <= @a #|| $TXN[@i] != 0 do
      loop_1
      @b = $TXN[$i].size
      @j=1
      while @j <= @b || $TXN[$i][@j] != nil do
          loop_2
          @c = $TXN[$i][@j].size
          @k=1
          while @k <= @c || $TXN[$i][@j][@k] != nil do
              loop_3
              @k +=2;
          end
          @j +=2; @k = 1;
      end
    $i +=1;
  end
end

def loop_1
  puts $TXN[$i]
  puts "AT LOOP 1"
end

def loop_2
  p $TXN[$i][@j]
  p "value of i #{$i}, j is #{@j}"
  puts "AT LOOP 2"
end

def loop_3
  puts $TXN[$i][@j][@k]
  p "value of i #{$i}, j is #{@j}, k is #{@k}"
  puts "AT LOOP 3"
end

check
****************************************

regards,
Naresh

Attachments:
http://www.ruby-forum.com/attachment/3337/script_data.xml

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