You can export variables using exactly the same Exporter mechanism as you can with subroutines. E.g: 

(PackVar.pm):
package PackVar;
                                                                      
+          
use base Exporter;
                                                                      
+          
use vars qw(@EXPORT $Test);
                                                                      
+          
@EXPORT = qw($Test);
                                                                      
+          
$Test = 1;
                                                                      
+          
1;


(test.pl):
use strict;
                                                                      
+          
use PackVar;
                                                                      
+          
print $Test,"\n";

[download]
which works fine. Note that the exported variables must be package and not lexical variables: you need to declare them in the module with use vars or our (or use the fully package qualified name) and not declare them with my.

However you really, really, really do want to think carefully about exporting variables like this even more than you do with subroutines as this constitutes a more serious pollution of the callers namespace with a higher risk of collision, unless you have absolutely no way around this you should use fully package qualified names (e.g. $PackVar::Test) in the caller and document this usage.

/J\

In reply to Re: Access to (exported?) variabes of a module by gellyfish
in thread Access to (exported?) variabes of a module by jeanluca

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.