Date sent: Thu, 14 Jun 2007 06:29:56 -0400
From: Mathew Snyder <[EMAIL PROTECTED]>
To: Perl Beginners <beginners@perl.org>
Subject: Hash Key is a Null Value
> I'm building a hash using values from a database backend to an application we
> use in house. The application has a field which contains a customer name.
> This
> values is supposed to be set by the person handling the work but sometimes
> doesn't get done. This leaves a NULL value in the database which, in turn,
> leaves me with a null key in my hash.
>
> I've tried resetting it by assigning the value to another key so I can delete
> the element but so far nothing has worked. I've tried to access it with
> $hash{}, $hash{""}, and $hash{''}. None of these will allow me to access the
> data.
$hash{undef()}
You need to use the () because otherwise Perl would automatically
quote the undef. So $hash{undef} is equivalent to $hash{'undef'}.
You might also do something like this:
my $NULL;
print $hash{$NULL};
HTH, Jenda
===== [EMAIL PROTECTED] === http://Jenda.Krynicky.cz =====
When it comes to wine, women and song, wizards are allowed
to get drunk and croon as much as they like.
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