# Package/Exporter.pm
package Package::Exporter;
use strict;
use warnings;
use Carp qw[confess];
use Data::Dumper;


sub import {
    my( $class, @exports ) = @_;

    # turn 'Foo::Bar' into 'Foo/Bar'
    ( my $class_path = $class ) =~ s{::}{/}g;

    for my $export( @exports ) {
        no strict 'refs';

        # attempt to require 'Foo/Bar/Baz.pm'
        eval { require "$class_path/$export.pm"; };

        # die if there was an error
        if( $@ ) {
            confess __PACKAGE__ . "::import ${class}::import problem with $export - $@";
        }

# warn __PACKAGE__ . "::import ${class}::$export";
        # import, just in case
        "${class}::$export"->import;

        # loop through everything in 'Foo::Bar::Baz::'
        my @all_in_namespace = keys %{"${class}::${export}::"};

        # only the methods this time
        my @methods_in_namespace = grep { *{"${class}::${export}::${_}"}{CODE} } @all_in_namespace;

        for my $method( @methods_in_namespace ) {
            # and assign 'Baz::method' to 'Foo::Bar::Baz::method'
# warn sprintf( q["%s::%s" = sub () { "%s::%s::%s"}], $export, $method, $class, $export, $method );
            *{"${export}::${method}"}=\&{"${class}::${export}::${method}"};
        }
    }
}

1;


##</code><code>##

# Foo/Bar.pm
package Foo::Bar;
use strict;
use warnings;
use base 'Package::Exporter';

1;


##</code><code>##

# foo.pl
use Foo::Bar qw(Baz);

print Baz::quux(), "\n";