Congratulations on fixing the problem per your update to the root node. You have taught me something I didn't know about hash keys. In my experience, Perl respects integers, but clearly hash keys are coerced into something different. I'm a little nervous, though, about coercing by adding zero. If the key has been changed into a floating point number, you might conceivably get 0.9999 (however many) instead of 1. Excel has to have an integer as a row or column number, and if that coercion is done by int or something comparable, you might get an "out by one" error. Although we have tried row 1 and it seems to work, it remains possible that in some system you will attempt to access row or column zero and get a run-time error. I therefore prefer the approach I have used in the following code. As an aside, $row++ is more Perlish and less typing than your way, but your way works fine.

use strict;
use warnings;
use diagnostics;
use Win32::OLE;

my $xl = Win32::OLE->new('Excel.Application');
$xl->{Visible} = 1;
my $wb = $xl->Workbooks->Add();
for (2..$wb->Sheets->{Count}) {
    $wb->Sheets(2)->Delete;
}

my $worksheet = $wb->Sheets(1);
my %hash = (1 => 'One', 
            5 => 'Five',
            10=> 'Ten');
            
my $row = 0;
foreach my $key (sort keys %hash){
    $row++;
    $worksheet->Cells($row, int($key + .5))->{Value} = $hash{$key};
}

[download]

Regards,

John Davies

In reply to Re^3: Can't use an undefined value as a hash reference when passing hash key into Excel OLE call. by davies
in thread Can't Use an undefined value as a HASH reference when passing HASH key into Excel OLE call. by kgnickl

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