From: Michael Linfield <globyy3000@...>
Date: 2008-05-13T04:38:59+09:00
Subject: Re: array diff

Same thing basically but none-the-less this would also work..

csv1 = []
csv2 = []

IO.foreach("csv1.csv") {|lines| csv1 << lines}
IO.foreach("csv2.csv") {|lines| csv2 << lines}

OR

csv1 = []
csv2 = []

FCSV.foreach("csv1.csv", :headers => true) do |row|
   csv1 << row["headerName"]
end

FCSV.foreach("csv2.csv", :headers => true) do |row|
   csv2 << row["headerName"]
end

#this will give you the elements they dont share in common
differenceArray = csv1-csv2

#this will give you the elements they DO share in common
commonArray = csv1&csv2

Regards,

- Mac
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