> On Thursday 03 Jun 2010 19:53:48 Bryan R Harris wrote:
>> Seems like the first time I run a new script I *always* get an error
>> message something like this:
>>
>> "Use of uninitialized value in printf at /Users/harrisb/Library/perl/matc
>> line 414."
>>
>> The problem is usually I'm printing several things, so I have no idea which
>> variable wasn't initialized from that error. So I usually end up pulling
>> all the variables apart onto separate lines with their own print commands.
>>
>> But I was just thinking -- why doesn't the error just tell me which
>> variable was uninitialized? e.g. 'Variable "$count" used with
>> uninitialized value in printf at /Users/harrisb/Library/perl/matc line
>> 414.'
>>
>> That would save me so much time debugging! Is there a way to enable that
>> somehow?
>
> Such a feature exists in more recent versions of Perl:
>
> [console]
> shlomi:~$ perl -e 'use warnings; printf("%s", $c);'
> Name "main::c" used only once: possible typo at -e line 1.
> Use of uninitialized value $c in printf at -e line 1.
> [/console]
Yep, that works for me, but it doesn't work everywhere:
[console]
$ perl -e 'use warnings; $c=undef; printf("%s", $c->[0]{dog})'
Use of uninitialized value in printf at -e line 1.
[/console]
Anything that can help me here? I wish it'd say:
Use of uninitialized value $c->[0]{dog} in printf at -e line 1.
... but it doesn't.
- Bryan
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