My program tempo2.pl is as follows:
use strict;
use MyPack;
my $myString = $MyPack::a;
print $myString;
My module MyPack.pm can be either:
package MyPack;
require Exporter;
$a = "Read from Mypack"
or
package MyPack;
our $a = "Read from Mypack"
The program tempo2.pl runs properly regardless of whether I use Exporter or 'our'. So my question is, when would one prefer the use of 'our' instead of Exporter?
Is the use of 'our' in order to avoid possibly polluting a namespace by exporting all of the package variables?
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