Re^2: Simple? problem accesssing elements in a hash

I found the error. Being told that it didn't look like a code problem and more like an input problem helped.

It was in the initialization of the PCA hash the keys, instead of being numbers, had quotation marks around them.

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Re^3: Simple? problem accesssing elements in a hash by tinita (Parson) on Aug 29, 2008 at 14:36 UTC
and the general answer for this is: debug. print out variables, if you're not sure what's in it. and even if you're sure. `use Data::Dumper; $Data::Dumper::Useqq = 1; # print non-printable chars warn Dumper $blackbox;` [download]	[reply] [d/l]
Re^4: Simple? problem accesssing elements in a hash by 0AP0 (Initiate) on Aug 29, 2008 at 16:48 UTC
I agree. Strings appearing with quotes around them are sneaky ones, though. In this case the answer was more obvious looking at the input files than the output statements.	[reply]