I was brainstorming OOP perl and came up with the following. Certainly it can't be new, so I'd like to know if it has name. Thanks! 
#!/usr/bin/perl
use warnings;
use strict;

sub new_counter {
    my ($start) = @_;
    my %internal = ( count => $start );
    my %external;
    $external{add} = sub {
        my ($value) = @_;
        $internal{count} += $value;
    };
    $external{get} = sub {
        return $internal{count};
    };
    return \%external;
}

my $ctr = new_counter(7);
print "Start: " . $ctr->{get}() . "\n";
$ctr->{add}(3);
print "End: " . $ctr->{get}() . "\n";

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In reply to OOP By Any Other Name by Anonymous Monk

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