From: Adam Akhtar <adamtemporary@...>
Date: 2008-08-20T20:18:15+09:00
Subject: Re: array of hashes - need to iterate and calulate stats but how

Thanks for the response,

your solution would be great but the problem is i cant use a hash to 
store the output as I need to store more than two values. I need to have 
model number, total listed, total sold and finaly the sell through rate 
based on the previous two numbers.

Ive tried to rejig teh general jist of your approach but couldnt.

Heres my very rough solution. Surely theres a more elegant way to this

   number_listed = 0
   number_sold = 0
   current_model = item_info[0][:unique_identifier]
   item_info.each do |item|
      if current_model != item[:unique_identifier]
         result = {unique_identifier => current_model, :total_listings 
=>  number_listed, :total_sold => number_sold, :str => 
number_sold/number_listed*100.00}
         number_sold = 0
         numbler_listed = 0
         unique_identifier = item[:unique_identifier]
      end
       number_sold += if item[:did_it_sell]
       number_listed +=
    end


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