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File vars.pm

package vars;

use 5.006;

our $VERSION = '1.03';

use warnings::register;
use strict qw(vars subs);

sub import {
    my $callpack = caller;
    my (undef, @imports) = @_;
    my ($sym, $ch);
    foreach (@imports) {
        if (($ch, $sym) = /^([\$\@\%\*\&])(.+)/) {
	    if ($sym =~ /\W/) {
		# time for a more-detailed check-up
		if ($sym =~ /^\w+[[{].*[]}]$/) {
		    require Carp;
		    Carp::croak("Can't declare individual elements of hash or array");
		} elsif (warnings::enabled() and length($sym) == 1 and $sym !~ tr/a-zA-Z//) {
		    warnings::warn("No need to declare built-in vars");
		} elsif  (($^H &= strict::bits('vars'))) {
		    require Carp;
		    Carp::croak("'$_' is not a valid variable name under strict vars");
		}
	    }
	    $sym = "${callpack}::$sym" unless $sym =~ /::/;
	    *$sym =
		(  $ch eq "\$" ? \$$sym
		 : $ch eq "\@" ? \@$sym
		 : $ch eq "\%" ? \%$sym
		 : $ch eq "\*" ? \*$sym
		 : $ch eq "\&" ? \&$sym 
		 : do {
		     require Carp;
		     Carp::croak("'$_' is not a valid variable name");
		 });
	} else {
	    require Carp;
	    Carp::croak("'$_' is not a valid variable name");
	}
    }
};

1;
__END__

=head1 NAME

vars - Perl pragma to predeclare global variable names

=head1 SYNOPSIS

use vars qw($frob @mung %seen);

=head1 DESCRIPTION

NOTE: For use with variables in the current package for a single scope, the
functionality provided by this pragma has been superseded by C<our>
declarations, available in Perl v5.6.0 or later, and use of this pragma is
discouraged.  See L<perlfunc/our>.

This will predeclare all the variables whose names are 
in the list, allowing you to use them under "use strict", and
disabling any typo warnings.

Unlike pragmas that affect the C<$^H> hints variable, the C<use vars> and
C<use subs> declarations are not BLOCK-scoped.  They are thus effective
for the entire file in which they appear.  You may not rescind such
declarations with C<no vars> or C<no subs>.

Packages such as the B<AutoLoader> and B<SelfLoader> that delay
loading of subroutines within packages can create problems with
package lexicals defined using C<my()>. While the B<vars> pragma
cannot duplicate the effect of package lexicals (total transparency
outside of the package), it can act as an acceptable substitute by
pre-declaring global symbols, ensuring their availability to the
later-loaded routines.

See L<perlmodlib/Pragmatic Modules>.

=cut

Name	Type	Size	Permission	Last Modified	Actions
.	DIR	-	drwxr-xr-x	2025-07-29 10:57:25
..	DIR	-	drwxr-xr-x	2025-10-16 10:59:21
Attribute	DIR	-	drwxr-xr-x	2025-07-29 10:57:25
B	DIR	-	drwxr-xr-x	2025-07-29 10:57:25
CPAN	DIR	-	drwxr-xr-x	2024-03-13 04:56:46
Class	DIR	-	drwxr-xr-x	2025-07-29 10:57:25
Compress	DIR	-	drwxr-xr-x	2024-03-13 04:36:57
Config	DIR	-	drwxr-xr-x	2025-07-29 10:57:25
DBM_Filter	DIR	-	drwxr-xr-x	2025-07-29 10:57:25
Devel	DIR	-	drwxr-xr-x	2025-07-29 10:57:25
ExtUtils	DIR	-	drwxr-xr-x	2025-07-29 10:57:25
File	DIR	-	drwxr-xr-x	2025-07-29 10:57:25
Getopt	DIR	-	drwxr-xr-x	2025-07-29 10:57:25
I18N	DIR	-	drwxr-xr-x	2025-07-29 10:57:25
IO	DIR	-	drwxr-xr-x	2025-07-29 10:57:25
IPC	DIR	-	drwxr-xr-x	2025-07-29 10:57:25
Locale	DIR	-	drwxr-xr-x	2025-07-28 08:08:32
Math	DIR	-	drwxr-xr-x	2025-07-29 10:57:25
Memoize	DIR	-	drwxr-xr-x	2025-07-29 10:57:25
Module	DIR	-	drwxr-xr-x	2025-07-29 10:57:25
Net	DIR	-	drwxr-xr-x	2025-07-29 10:57:25
Pod	DIR	-	drwxr-xr-x	2025-07-29 10:57:25
Search	DIR	-	drwxr-xr-x	2025-07-29 10:57:25
Term	DIR	-	drwxr-xr-x	2025-07-29 10:57:25
Text	DIR	-	drwxr-xr-x	2025-07-29 10:57:25
Thread	DIR	-	drwxr-xr-x	2025-07-29 10:57:25
Tie	DIR	-	drwxr-xr-x	2025-07-29 10:57:25
Time	DIR	-	drwxr-xr-x	2025-07-29 10:57:25
URI	DIR	-	drwxr-xr-x	2024-03-13 04:36:40
Unicode	DIR	-	drwxr-xr-x	2025-07-29 10:57:25
User	DIR	-	drwxr-xr-x	2025-07-29 10:57:25
encoding	DIR	-	drwxr-xr-x	2025-07-29 10:57:25
overload	DIR	-	drwxr-xr-x	2025-07-29 10:57:25
pod	DIR	-	drwxr-xr-x	2025-07-29 10:57:25
unicore	DIR	-	drwxr-xr-x	2025-07-29 10:57:24
vendor_perl	DIR	-	drwxr-xr-x	2025-07-28 08:07:18
warnings	DIR	-	drwxr-xr-x	2025-07-29 10:57:25
AnyDBM_File.pm	text/plain	2.56 KB	-rw-r--r--	2025-07-28 08:07:09
AutoLoader.pm	text/plain	15.43 KB	-rw-r--r--	2025-07-28 08:07:09
AutoSplit.pm	text/plain	19.18 KB	-rw-r--r--	2025-07-28 08:07:09
Benchmark.pm	text/plain	30.3 KB	-rw-r--r--	2025-07-28 08:07:09
CORE.pod	text/plain	3.11 KB	-rw-r--r--	2025-07-28 08:07:09
DB.pm	text/plain	18.48 KB	-rw-r--r--	2025-07-28 08:07:09
DBM_Filter.pm	text/plain	14.05 KB	-rw-r--r--	2025-07-28 08:07:09
DirHandle.pm	text/plain	1.52 KB	-rw-r--r--	2025-07-28 08:07:09
Dumpvalue.pm	text/plain	17.14 KB	-rw-r--r--	2025-07-28 08:07:09
English.pm	text/plain	4.65 KB	-rw-r--r--	2025-07-28 08:07:09
FileCache.pm	text/plain	5.44 KB	-rw-r--r--	2025-07-28 08:07:09
FileHandle.pm	text/plain	6.63 KB	-rw-r--r--	2025-07-28 08:07:09
FindBin.pm	text/plain	4.45 KB	-rw-r--r--	2025-07-28 08:07:09
Internals.pod	text/plain	2.52 KB	-rw-r--r--	2025-07-28 08:07:09
Memoize.pm	text/plain	35.34 KB	-rw-r--r--	2025-07-28 08:08:32
NEXT.pm	text/plain	18.4 KB	-rw-r--r--	2025-07-28 08:07:09
PerlIO.pm	text/plain	10.21 KB	-rw-r--r--	2025-07-28 08:07:09
Safe.pm	text/plain	24.49 KB	-rw-r--r--	2025-07-28 08:07:09
SelectSaver.pm	text/plain	1.05 KB	-rw-r--r--	2025-07-28 08:07:09
SelfLoader.pm	text/plain	17.28 KB	-rw-r--r--	2025-07-28 08:08:32
Symbol.pm	text/plain	4.69 KB	-rw-r--r--	2025-07-28 08:07:09
Test.pm	text/plain	29.35 KB	-rw-r--r--	2025-07-28 08:08:32
Thread.pm	text/plain	8.09 KB	-rw-r--r--	2025-07-28 08:07:09
UNIVERSAL.pm	text/plain	6.44 KB	-rw-r--r--	2025-07-28 08:07:09
URI.pm	text/plain	33.97 KB	-rw-r--r--	2018-01-09 06:42:55
XSLoader.pm	text/plain	11 KB	-rw-r--r--	2025-07-28 08:07:09
_charnames.pm	text/plain	32.39 KB	-rw-r--r--	2025-07-28 08:07:09
autouse.pm	text/plain	4.14 KB	-rw-r--r--	2025-07-28 08:07:09
base.pm	text/plain	10.72 KB	-rw-r--r--	2025-07-28 08:07:09
blib.pm	text/plain	2.04 KB	-rw-r--r--	2025-07-28 08:07:09
bytes.pm	text/plain	3.67 KB	-rw-r--r--	2025-07-28 08:07:09
bytes_heavy.pl	text/plain	758 B	-rw-r--r--	2025-07-28 08:07:09
charnames.pm	text/plain	20.38 KB	-rw-r--r--	2025-07-28 08:07:09
deprecate.pm	text/plain	3.01 KB	-rw-r--r--	2025-07-28 08:07:09
diagnostics.pm	text/plain	18.59 KB	-rw-r--r--	2025-07-28 08:07:09
dumpvar.pl	text/plain	15.19 KB	-rw-r--r--	2025-07-28 08:07:09
feature.pm	text/plain	16.68 KB	-rw-r--r--	2025-07-28 08:07:09
fields.pm	text/plain	9.27 KB	-rw-r--r--	2025-07-28 08:07:09
filetest.pm	text/plain	3.91 KB	-rw-r--r--	2025-07-28 08:07:09
if.pm	text/plain	3.26 KB	-rw-r--r--	2025-07-28 08:07:09
integer.pm	text/plain	3.18 KB	-rw-r--r--	2025-07-28 08:07:09
less.pm	text/plain	3.13 KB	-rw-r--r--	2025-07-28 08:07:09
locale.pm	text/plain	4.74 KB	-rw-r--r--	2025-07-28 08:07:09
meta_notation.pm	text/plain	2.07 KB	-rw-r--r--	2025-07-28 08:07:09
open.pm	text/plain	7.83 KB	-rw-r--r--	2025-07-28 08:08:32
overload.pm	text/plain	52.06 KB	-rw-r--r--	2025-07-28 08:07:09
overloading.pm	text/plain	1.77 KB	-rw-r--r--	2025-07-28 08:07:09
perl5db.pl	text/plain	309 KB	-rw-r--r--	2025-07-28 08:07:09
sigtrap.pm	text/plain	7.43 KB	-rw-r--r--	2025-07-28 08:07:09
sort.pm	text/plain	5.94 KB	-rw-r--r--	2025-07-28 08:07:09
strict.pm	text/plain	4.63 KB	-rw-r--r--	2025-07-28 08:07:09
subs.pm	text/plain	848 B	-rw-r--r--	2025-07-28 08:07:09
utf8.pm	text/plain	8.9 KB	-rw-r--r--	2025-07-28 08:07:09
utf8_heavy.pl	text/plain	30.87 KB	-rw-r--r--	2025-07-28 08:07:09
vars.pm	text/plain	2.36 KB	-rw-r--r--	2025-07-28 08:07:09
vmsish.pm	text/plain	4.21 KB	-rw-r--r--	2025-07-28 08:07:09
warnings.pm	text/plain	43.71 KB	-rw-r--r--	2025-07-28 08:07:09

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