Re: unit messages

On 4/30/07, oryann9 <oryann9@xxxxxxxxx> wrote:

Use of uninitialized value in concatenation (.) or
string at
JFS_version_parser.pl line 20, <JFS> line 952 (#1)

This message happens because some value was undef instead of a string.
From the message, it seems likely that it's a variable being
interpolated into a string. Once you find out which variable, and why
it's undef, and that it doesn't matter whether it's undef or an empty
string, you could fix it something like this:

# avoid messages about uninitialized $whatever
$whatever = "" unless defined $whatever;

use strict;
use warnings;
use diagnostics;

The first two are great. The third one is not intended for production
code; you should 'use diagnostics' only when you're developing code
and expecting error messages. I say this in part because 'diagnostics'
has a significant overhead of both time and memory. Be sure to disable
it when your code goes into production.

You have mail.

Don't we all?

Cheers!

--Tom Phoenix
Stonehenge Perl Training
.

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