in reply to Issue with grep & getting the right hash values out & possibly some other stuff
I also found that the only key is 6 (just the number 6).
The problem is that you are using the size of the arrays (eg. @quintic in a scalar context) as your hash keys. If you quoted the hashes thus:
$haystack{ "@quintic" }{ "@derivative" } = \@zeros;
Or used join something like this:
$haystack{ join ',', @quintic }{ join ',', @derivative } = \@zeros;
That might be nearer to what you are after, though it may not sure all the ills.
Note also that I've backslashed \@zeros to store a reference to the array, otherwise you are again storing the size of the array, not its contents.
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