Hi Marc,
On Sat, 28 Apr 2012 07:16:18 -0700
sono...@fannullone.us wrote:
> I'm having a problem with the following code:
>
> #!/usr/bin/perl
> use strict;
> use warnings;
>
> my $xtra = 'mail.example.com';
>
> my $host = 'localhost' unless (defined ($xtra));
>
It's a bad idea to declare variables with a trailing conditional statement
modifier (such as "if COND();" or "unless COND();").
What you should do is:
[CODE]
my $host;
unless (defined($xtra))
{
$host = 'localhost';
}
[/CODE]
Regards,
Shlomi Fish
> print $host;
>
> I get the message "Use of uninitialized value $host in print". Does
> anyone know why this doesn't work?
>
> Thanks,
> Marc
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