[Omaha.pm] silly warnings

Dan Linder dan at linder.org
Wed Jan 14 14:32:00 PST 2009


Wow, did I stump all the Perl experts, or did everyone go on vacation? ;-)

Another thought I had: Is it possible to "define $hash{$key}" manually
without assigning a value to it?  (i.e. the opposite of "undef $hash{$key}")

Dan
On Tue, Jan 13, 2009 at 9:07 AM, Dan Linder <dan at linder.org> wrote:

> Jay Hannah <jay at jays.net> wrote:
> > next if ($audit->{$date} && $audit->{$date}->{$hotel} &&
> $audit->{$date}->{$hotel} > 0);
>
> Sterling Hanenkamp wrote:
> > I usually prefer:
> > next if ($audit->{$date}{$hotel} || 0) > 0;
>
> Ok, I'm getting a similar issue with this bit of code:
> 55            } else {
> 56                ($value, $parm)=split(/\s+/,$line,2);
> 57                $myhash1{$section_name}{$parm} = $value;
> 58            }
>
> Line 57 is spitting a lot of "Use of unitialized value in hash element"
> warnings -- I'm pretty certain it's because of the newly defined %myhash1hash instantly having the $section_name and $parm keys used right away.
>
> I tried putting in these lines between 56 and 57:
> 55            } else {
> 56                ($value, $parm)=split(/\s+/,$line,2);
> 57                ($myhash1{$section_name} || 0);
> 58                ($myhash1{$section_name}{$parm} || 0);
> 59                $myhash1{$section_name}{$parm} = $value;
> 60            }
> ...but the warnings still persist.
>
> Aside from turning off warnings for these lines, is there a better way to
> handle this?  Should I be pre-loading the "$myhash1{$section_name}" branch
> first before adding the "{$parm}" branch to it?
>
> Dan
>
> --
> "Quis custodiet ipsos custodes?" (Who can watch the watchmen?) -- from the
> Satires of Juvenal
> "I do not fear computers, I fear the lack of them." -- Isaac Asimov
> (Author)
> ** *** ***** ******* *********** *************
>



-- 
"Quis custodiet ipsos custodes?" (Who can watch the watchmen?) -- from the
Satires of Juvenal
"I do not fear computers, I fear the lack of them." -- Isaac Asimov (Author)
** *** ***** ******* *********** *************
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