Re: variable sees it, array doesn't

Since you seem to be using warnings and strictures, I'm surprised that you got no warning messages when you ran your code, e.g.:

>perl -wMstrict -le
"my $s = '';
 if ($s != '') { print 'not equal' }
"
Argument "" isn't numeric in numeric ne (!=) at -e line 1.
Argument "" isn't numeric in numeric ne (!=) at -e line 1.

>perl -wMstrict -le
"my $s = 'foo';
 if ($s != '') { print 'not equal' }
"
Argument "" isn't numeric in numeric ne (!=) at -e line 1.
Argument "foo" isn't numeric in numeric ne (!=) at -e line 1.

>perl -wMstrict -le
"my $s = 0;
 if ($s != '') { print 'not equal' }
"
Argument "" isn't numeric in numeric ne (!=) at -e line 1.

>perl -wMstrict -le
"my $s = [ 'array', 'ref' ];
 if ($s != '') { print 'not equal' }
"
Argument "" isn't numeric in numeric ne (!=) at -e line 1.
not equal
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Comment on Re: variable sees it, array doesn't - stumped! Download Code

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Re^2: variable sees it, array doesn't - stumped! by tilly (Archbishop) on Dec 31, 2008 at 20:04 UTC
Warnings would go to the log file. Odds are good that the OP doesn't know where that is and/or didn't think to look there.	[reply]
Re^3: variable sees it, array doesn't - stumped! by shrdlu (Novice) on Jan 01, 2009 at 14:44 UTC
The OP sees it now! Thanks for the tip.	[reply]