From: Kamarulnizam Rahim <niezam54@...>
Date: 2011-02-05T11:34:28+09:00
Subject: dealing with nil output

Hi, i use the following code to obtain data from my csv file and
transfer it into a class:

ef = EfficiencyE.new
pp ef.blank = fields[1].tr_s('"', '').strip

i put pp to see the output and the output says:

""
"Efficiency (Energy)"
""
"Turn-off unnecessary lights/equipment"
C:/Users/Hekmatyer/Documents/NetBeansProjects/Nizam_BARU/lib/final.rb:574:in
`block in <main>': undefined method `tr_s' for nil:NilClass
(NoMethodError)
        from
C:/Users/Hekmatyer/Documents/NetBeansProjects/Nizam_BARU/lib/final.rb:559:in
`each_line'
        from
C:/Users/Hekmatyer/Documents/NetBeansProjects/Nizam_BARU/lib/final.rb:559:in
`<main>'

I think i know the problem because there are empty content in my csv
file. So how do i deal with this empty (nil) content?

Nizam

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