Re: Constructing a hash - why isn't my regex matching anything

One way to understand the result of the matching operation is to view it as a true/false value that indicates whether there is a match, and that's not what you wanted. To get what you want, do the following (you may have to further tweak your regexp, but that's a different story):

 $line =~/;(.*)\s-\s/; 
my $key = $1; 
 $line =~/\.\\(.*)-\d+\;/; 
my $value = $1;
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Peter (Guo) Pei

Comment on Re: Constructing a hash - why isn't my regex matching anything Download Code

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Re^2: Constructing a hash - why isn't my regex matching anything by perl_mystery (Beadle) on Dec 19, 2010 at 08:42 UTC
I keep getting the below warning Use of uninitialized value in hash element at hash_construct.pl line 15, <$fh> line 909. Use of uninitialized value in concatenation (.) or string at hash_construct.pl line 11, <$fh> line 910. `#!/usr/bin/perl use strict; use warnings; use Data::Dumper; my %hash; open my $fh, '<', $ARGV[0] or die "could not open $ARGV[0]'' $!"; while (my $line = <$fh>) { $line =~/;(.)\s-\s/; my $key = $1; print "KEY:$key\n"; $line =~/\.\\(.)-/; my $value = $1; print "VALUE:$value\n"; $hash{$key}=$value; } print Dumper(\%hash);` [download]	[reply] [d/l]
Re^3: Constructing a hash - why isn't my regex matching anything by Anonymous Monk on Dec 19, 2010 at 08:58 UTC
Yes, I know, do you have a question?	[reply]
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]
Re^5: Constructing a hash - why isn't my regex matching anything by Anonymous Monk on Dec 19, 2010 at 09:12 UTC
Re^6: Constructing a hash - why isn't my regex matching anything by perl_mystery (Beadle) on Dec 19, 2010 at 09:23 UTC
Some notes below your chosen depth have not been shown here


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