I find examples like the following more useful: 
sub reverse_iterator {
    my @list = @_;
    my $i = $#list;
    sub {
        return if $i < 0;
        return $list[$i--];
    };
}

my $foo = reverse_iterator(@ARGV);
while (defined ($_ = $foo->())) {
    print;
}

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In reply to Re: list reversal closure by imp
in thread list reversal closure by apotheon

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