NAME

vars::i - Perl pragma to declare and simultaneously initialize global variables.

SYNOPSIS

use Data::Dumper;
$Data::Dumper::Deparse = 1;
                                                                #
use vars::i '$VERSION' => 3.44;
use vars::i '@BORG' => 6 .. 6;
use vars::i '%BORD' => 1 .. 10;
use vars::i '&VERSION' => sub(){rand 20};
use vars::i '*SOUTH' => *STDOUT;
                                                                #
BEGIN {
    print SOUTH Dumper [
        $VERSION, \@BORG, \%BORD, \&VERSION
    ];
}
                                                                #
use vars::i [ # has the same affect as the 5 use statements above
    '$VERSION' => 3.66,
    '@BORG' => [6 .. 6],
    '%BORD' => {1 .. 10},
    '&VERSION' => sub(){rand 20},
    '*SOUTH' => *STDOUT,
];
                                                                #
print SOUTH Dumper [ $VERSION, \@BORG, \%BORD, \&VERSION ];
                                                                #
__END__

DESCRIPTION

For whatever reason, I once had to write something like

BEGIN {
    use vars '$VERSION';
    $VERSION = 3;
}

and I really didn't like typing that much.

Also, I like being able to say

use vars::i '$VERSION' => sprintf("%d.%02d", q$Revision: 1.3 $ =~ /: (\d+)\.(\d+)/);

use vars::i [
 '$VERSION' => sprintf("%d.%02d", q$Revision: 1.3 $ =~ /: (\d+)\.(\d+)/),
 '$REVISION'=> '$Id: GENERIC.pm,v 1.3 2002/06/02 11:12:38 _ Exp $',
];

Like with use vars;, there is no need to fully qualify the variable name.

SEE ALSO

See vars, "our" in perldoc, "Pragmatic Modules" in perlmodlib.