It seems you could just use an array with a current position marker. 
sub new {
    die "bad param count" unless 2 == @_;
    my ($me, $arr_ref) = @_;
    bless { current => 0, data => $arr_ref},
          ref $me ||$me;
}

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In reply to Navigatible list structure by rir
in thread Linked-list Style Data Structure by impossiblerobot

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