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Re: please explainby DigitalKitty (Parson) |
on May 21, 2003 at 20:35 UTC ( [id://259876]=note: print w/replies, xml ) | Need Help?? |
Hi Anonymous Monk,
$k is a lexical variable. It's scope ( where it can be seen ) is limited to 'main' ( outside of all subroutines ) unless it has been passed as a parameter. $dir is being analyzed for it's value. If it isn't 'undef', then search through $dir looking for a match of zero or more characters ( .* ) followed by a '\' then zero or more characters on the end of the string denoted by the '$'. The first pattern is enclosed in parentheses. This will store the match in $1. If there were other parentheses, they would store their matches in $2, $3, etc. $1 is then assigned to $back_one. Hope this helps, -Katie.
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