Re: Uninitialized Value Warning

Hate to be so blunt but it means exactly what it says.

You never gave $count a value. To get rid of it you could set my $count=0, but I'm not sure what that'll do for you. The way you have this code it looks like you're only trying to print "1" ( $array[0] ) to myfile.txt.

What are you wanting this code to accomplish?

coreolyn

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Re: Re: Uninitialized Value Warning by Anonymous Monk on Oct 22, 2003 at 17:33 UTC
Nothing, that was just an example of a problem I have seen in other scripts, however you provided the answer. Sorry to be stupid, but I didn't take the term "uninitialized" to mean null. Anyway, problem solved.	[reply]
Re: Re: Re: Uninitialized Value Warning by bobn (Chaplain) on Oct 22, 2003 at 18:30 UTC
It's not null. Null is a value (or at least the specific absence of one). It's uninitialized - there's never been a value assigned, and although Perl will try to do the right thing and assume 0 in numeric context or the empty string in string context, it really is just what it says: uninitialized. Update: Just remembered, some DBs use Null the way you did, I think. --Bob Niederman, http://bob-n.com All code given here is UNTESTED unless otherwise stated.	[reply]
Re: Re: Re: Uninitialized Value Warning by thelenm (Vicar) on Oct 22, 2003 at 19:06 UTC
It basically means you used a variable with the value `undef` in a ~~string concatenation (which is what string interpolation does under the covers)~~... er, array index in this case, but the warning is emitted whenever an undefined value is used as if it were already defined. "Uninitialized" may be a little misleading because you can still get this warning even if the variable has had a value assigned to it before: `use warnings; my $str = 'foo'; print "$str\n"; # ok $str = undef; print "$str\n"; # emits "uninitialized" warning` [download] By the way, you can see detailed explanations of pretty much all Perl warnings by checking out the perldiag documentation (run `perldoc perldiag`). -- Mike -- `XML::Simpler does not require XML::Parser or a SAX parser. It does require File::Slurp. -- grantm, perldoc XML::Simpler`	[reply] [d/l] [select]


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Re: Uninitialized Value Warning

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