Proposed cleanup for the dirt mentioned in ExcelPerl.pm/getNextRow:

my $rowData = $sheet->Range("A$row:IV$row")->{Value}; # dirty

Idea: A range has a method address to stringify itself, giving the string one needs in the constructor à la range("A1:X1").

1. Expand open by not only saving the lastRow, but also the maxCol:

       my $bottomRight = (split (/:/, $self->worksheet->UsedRange->addres
   +s(0,0)))[-1];
       my ($colNameMax, $rowNumMax) = $bottomRight =~ /^([A-Z]+)(\d+)/;
       $self->lastRow( $rowNumMax );
       $self->maxCol( $colNameMax );
   [download]

   Also add maxCol to @ObjInterfaceMethod to initially create it.
2. Now you can do the following in getNextRow:

   my $rowData = $sheet->Range("A$row:" . $self->maxCol . $row)->{Value};
   [download]

   But we also have to change the construction of the list to iterate over in the foreach following:

   foreach my $value (ref $rowData ? reverse @{ $rowData->[0] } : $rowDat
   +a) {
   [download]

   because $rowdata is only a scalar when maxCol eq 'A'.

We can take an additional step (now in excelPerl.pl) and compile (eval) the $perCode only once:

my $fn = eval "sub {
    my \@F = \@_;
    no warnings 'uninitialized';
    $perlCode
}";
die $@ if $@;
[download]

Maybe we want the no warnings as shown in that tight scope, since our first change made it more likely that an index out of range for @F will be tried to access in the $perlCode.

The former eval part in the while - getNextRow changes to

$fn->(@F);

with that.