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passing package names as parameters to modules

passing package names as parameters to modules

passing package names as parameters to modules

(OP)

i have a module that contains general use subroutines that
will be accessed from different scripts-

my question is:

can i pass a package names to these subroutines?

i want to be able to initialize package variables within these subs
the package names will differ depending on the calling script


RE: passing package names as parameters to modules

Your problem is scope.

although you set the package var $Pack1::var1, as soon as the sub finishes it goes out of scope.

You could either look at using Exporter to make global functions available in your package as a utility helper module or perhaps look at moose for OOP.

However, you could use an interface type concept where you have setters for all your variables..

pack1.pl

CODE

#!/usr/bin/perl
   
use strict;
use warnings;
package Pack1;

# Set path to user modules (I use this to include the current path in the search environment var @INC)
use FindBin qw($Bin);
use lib "$Bin";

# use your helper module
use module1;   

# private vars for this package. 
my $var1;
 
# public setters
sub var1()
{
    my $self = shift;
    $var1 = shift;
}

# call helper module to set the local vars
module1->assignvars("Pack1");     

# print result of local variable
print $var1  ,"\n"; 

Then in the helper module...
module1.pm

CODE

#!/usr/bin/perl
   

 use strict;
 use warnings;
 
 package module1;
 
 sub assignvars {
      my ($self, $packagealias) = @_; 	
      $packagealias->var1("whatever would go here"); 
 }
 
 1; 

So using the OOP interface paradigm, you create setter methods for all your variables.

As mentioned, you could use moose and declare object attributes and have moose create all the setters for you.

Hope this helps.

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