in reply to Re^2: Constructing a hash - why isn't my regex matching anything
in thread Constructing a hash - why isn't my regex matching anything

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Re^4: Constructing a hash - why isn't my regex matching anything
by perl_mystery (Beadle) on Dec 19, 2010 at 09:05 UTC

    why is $key and $match not matching anything?what change should I do in regex to match them?

[reply]
      why is $key and $match not matching anything?

      Because there is nothing to match. An empty line, all whitespace line, is empty :) It has no dots. It has no dashes, semicolons, slashes. Your regex won't match. :D

      what change should I do in regex to match them?

      Allow for the possibility of failure,ie test for success, just like this guy shows

[reply]

        For the input line shown below,the regex is still no matching,I couldnt find anything wrong?Need your input 

        INPUT LINE:\root\edit\perl\scripts\scripths\sec\inc\script_auth_pap.h-
+113115;perforcePLF.txt;//programfiles/documents/data/lookup/script_au
+th_pap.h - label_scriptHS_source.01.16.00 : 5
 if (my ($key, $value) = $line =~ /\.\\(.+?)-\d+;.+?;(.+?)\s-\s/) {
}

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