Re: Arrays of hashes which have arrays

Use use warnings;!!! You would have gotten at least the first of

Useless use of concatenation (.) or string in void context
Use of uninitialized value in print
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print .", ".$xy;
      ^
      |
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The above means

print() . ", " . $xy;
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and thus

print($_) . ", " . $xy;
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By the way, when dumping an array, use
print Dumper \@array;
instead of
print Dumper @array;

Update: Added warning.

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Re^2: Arrays of hashes which have arrays by LesleyB (Friar) on Jan 26, 2009 at 22:49 UTC
I am using warnings .. I only posted the snippets that were causing me grief. I misinterpreted those warnings to mean I was attempting to print a variable with no value. Thank you very much for your help	[reply]
Re^3: Arrays of hashes which have arrays by ikegami (Patriarch) on Jan 26, 2009 at 22:58 UTC
"Useless use in void context" is not a comment about the operands. It means the result of an operation is being discarded without being used. In this case, the result of the concatenation of the value returned by `print` and what follows is being discarded. The following would also issue the warning `@a = 4, 5;` [download] because Perl interprets that as `( @a = 4 ), 5;` [download] The result of the list operator is being discarded. (I'm making the likely assumption that the above is being evaluated in void context.)	[reply] [d/l] [select]