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perl: storing regex in array variables trouble

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Top Forums Shell Programming and Scripting perl: storing regex in array variables trouble
# 1  
Old 08-29-2008
perl: storing regex in array variables trouble
hi
this is an example of code:
Code:
use strict;
use warnings;
open FILE, "/tmp/result_2";
my $regex="\\[INFO\\] Starting program ver. (.*)";
my $res="Program started, version <$1> - OK.\n";
while (<FILE>) {
if ($_ =~ /($regex)/) {
   print "$res";
    }
}
close FILE;

This finds $regex and print out the $res, but "$1" doesn't work. I've tried <\$1> as well and other variations. How to make it work? Smilie
# 2  
Old 08-29-2008
With a string in double quotes, the $1 gets interpolated at the time you define the string. Try single quotes and eval print $res;
# 3  
Old 08-29-2008
in this redaction:
Code:
use strict;
use warnings;
open FILE, "/tmp/result_2";
my $regex="\\[INFO\\] Starting program ver. (.*)";
my $res='Program started, version <$1> - OK.\n';
while (<FILE>) {
if ($_ =~ /$regex/) {
   eval print $res;
    }
}
close FILE;

doesn't work as well Smilie
# 4  
Old 08-29-2008
I guess you need to eval the matching as well.
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