Hello Perl monks,

I am a Perl newbie

I am try to get the name of the hash which is in another Perl file, and then access the hash elements, but when I run my program I am getting these errors

Use of uninitialized value $line in pattern match (m//) at test.pm line 17.

Use of uninitialized value $typ_s in string at test.pm line 20.

My code goes like this

package hash;
use strict;
use warnings;
$test = {

            'hash1' => {
                        'paramA'     => '00' ,
                        'paramB'      => 'FF' ,
                       },
                       
            'hash2' => {
                        'paramA'     => '01' ,
                        'paramB'      => '02' ,
                       },
            
            'hash3' => {
                        'paramA'     => '00' ,
                        'paramB'      => '03' ,
                       },
                       
        };

[download]

This hash structure is generated, so I can't modify it

This the Perl file which contains the hash that needs to be extracted

This is the Perl script I have written to extract the hash

#!/usr/local/bin/perl
use strict;
use warnings;
Generate();

sub Generate
{      
        Process_File('hash.pm');
}

sub Process_File
{
        my $filename = shift; 
        open(my $fh, '<:encoding(UTF-8)', $filename)
        or die "Could not open file '$filename' $!";
        my $line;
        $line =~ m/\'hash1\'/;
        my  $typ_s   = $line->{paramA};
        my  $paramB   = $line->{paramB};
        print "$typ_s";
}

[download]

Help me!

In reply to Accessing the hash name in perl by Sonali

Title:
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