how to use other file array in program

Question

list.pl

my @array1 = qw ( l2  l3 l4 l5 );
my @array2 = qe ( l6  l2 l3 );

Pgm.pl

use list.pl 

print @array1;

is it possible ?

Not directly. The whole point of my is to make it impossible to access a variable outside of its scope. — mob
– mob, Commented Feb 25, 2011 at 16:22

erickb · Accepted Answer · 2011-02-25 11:14:01Z

3

try require, require 'list.pl'. You might also need to change the scope prefix my to something more global.

answered Feb 25, 2011 at 11:14

erickb

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Comments

Eric Strom · Accepted Answer · 2011-02-25 16:05:12Z

If you need to do something like this, you should setup a module:

List.pm:

 package List;
 use Exporter;
 our @ISA    = 'Exporter';
 our @EXPORT = qw(@array1 @array2);     

 our @array1 = qw(12 13 14 15);
 our @array2 = qw(16 12 13);

Pgm.pl:

 use List;
 print @array1;

But in general it is better to either code this using fully qualified names (removing the need for Exporter):

 use List ();
 print @List::array1;

Or to create an accessor method:

List.pm:

package List;

my @array1 = qw(12 13 14 15); # my makes these arrays private to this file
my @array2 = qw(16 12 13);

sub array1 {\@array1}  # accessor methods provide ways to change your 
sub array2 {\@array2}  # implementation if needed

Pgm.pl:

use List;

my $array1 = List->array1;

print @$array1;

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