From: 7stud -- <bbxx789_05ss@...>
Date: 2007-11-24T04:04:46+09:00
Subject: Re: help needed using a regex .sub

Peter Vanderhaden wrote:
> Alex,
> Your solution is exactly what I need, thank you very much!  I'm getting 
> better with regular expressions the more I work with them, and I really 
> appreciate your explanation of this regex.
> PV

On my system, this solution is 80% faster, and if your strings get 
longer it will be faster still:

str = 'PWCLLP-243-00000002,,Images\1\pwcllp_243_00000002.tif,,,,'

first_comma_pos = str.index(',')
next_char_pos = first_comma_pos + 1

if str[next_char_pos] == ?,
  str.insert(next_char_pos, 'NULL')
end

puts str


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