I just downloaded and started using Excel::Writer::XLSX and have written some buggy code. I have isolated the problem down to a few simple lines. The following script will produce an error when provided an argument so that it uses the $closure_workbook variable. (I can't remember the term for this kind of variable that is scoped outside the current block, but I thought it was a "closure".) The error is

Use of uninitialized value in numeric eq (==) at C:/strawberry/perl/site/lib/Excel/Writer/XLSX/Workbook.pm line 839 during global destruction.

Without the argument, the script uses the $workbook variable, runs fine and saves the workbook as expected.

I am running this on Strawberry Perl 5.16.2 on Windows 8. Excel::Writer::XLSX is version 0.67. Please help!

Thanks, John

The script: 

use strict;
use Excel::Writer::XLSX;

&func(@ARGV);

{
    my $closure_workbook;
    
    sub func {
    my $book;
    if (@_) {
        $book = $closure_workbook = Excel::Writer::XLSX->new( 'perl_bu
+g.xlsx' );
    }
    else {
        my $workbook = Excel::Writer::XLSX->new( 'perl_good.xlsx' );
        $book = $workbook;
    }
    my $worksheet = $book->add_worksheet();
    $worksheet->write(0, 0, 'Hi Excel!');
    }
}

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In reply to variable scopes in Excel::Writer::XLSX by johnrcomeau

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