Hello monks,
I have this package:

package MYPACKAGE;

use Exporter;
use vars qw / $VERSION @ISA @EXPORT @EXPORT_OK %EXPORT_TAGS /;
$VERSION = 1.0;
@ISA = qw/ Exporter /;
@EXPORT = ();
@EXPORT_OK = qw / sub1 /;
%EXPORT_TAGS = ( DEFAULT => [ qw / sub1 / ] );

use strict;

my $var1 = "DEFUALT I WANT TO CHANGE";
sub sub1 {
    print "var1 = $var1\n";
}

1;
[download]

Now I use this packe in this script like so:

#!/usr/bin/perl -w

use strict;
use lib ('.');
use MYPACKAGE qw / sub1 /;
use vars qw / $var1 /;
$var1="PRINT THIS";
sub1();
[download]

The output is:

var1 = DEFUALT I WANT TO CHANGE

I was hoping that the output would be

var1 = PRINT THIS

How come the value of $var1 didn't change when I did $var1="PRINT THIS";
in my script?

---

---

• Are you posting in the right place? Check out Where do I post X? to know for sure.
• Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:

  <code> <a> <b> <big> <blockquote> <br /> <dd> <dl> <dt> <em> <font> <h1> <h2> <h3> <h4> <h5> <h6> <hr /> <i> <li> <nbsp> <ol> <p> <small> <strike> <strong> <sub> <sup> <table> <td> <th> <tr> <tt> <u> <ul>

• Snippets of code should be wrapped in <code> tags not <pre> tags. In fact, <pre> tags should generally be avoided. If they must be used, extreme care should be taken to ensure that their contents do not have long lines (<70 chars), in order to prevent horizontal scrolling (and possible janitor intervention).
• Want more info? How to link or How to display code and escape characters are good places to start.