c:\@Work\Perl\monks>perl -wMstrict -le
"no strict qw(refs vars);
 no warnings;
 ;;
 package Foo;
 %CONTACTS = ('hello' => 'sailor');
 ;;
 package Bar;
 $ZOT{'autovivified'} = 'bam';
 ;;
 package main;
 ;;
 my $rx_pkg = qr{ \A (?: [[:alpha:]] [[:alnum:]]* ::)+ \z }xms;
 ;;
 print qq{'$_'} for
   grep m{ $rx_pkg }xms,
   keys %main::
   ;
 print '';
 ;;
 print qq{'$_' has 'CONTACTS'} for
   grep exists ${$_}{CONTACTS},
   grep m{ $rx_pkg }xms,
   keys %main::
   ;
 print '';
 ;;
 print qq{'$_' has 'ZOT'} for
   grep exists ${$_}{ZOT},
   grep m{ $rx_pkg }xms,
   keys %main::
   ;
 print '';
 ;;
 print $Foo::CONTACTS{'hello'};
 print $Bar::ZOT{'autovivified'};
"
'version::'
'utf8::'
're::'
'CORE::'
'DynaLoader::'
'mro::'
'strict::'
'Win32CORE::'
'Bar::'
'Regexp::'
'UNIVERSAL::'
'Foo::'
'main::'
'Carp::'
'Win32::'
'PerlIO::'
'IO::'
'Exporter::'
'Internals::'
'warnings::'
'DB::'

'Foo::' has 'CONTACTS'

'Bar::' has 'ZOT'

sailor
bam