Thanks for the help. All of the print statements included are solely for debugging purposes. Eventually, I will be removing them all.

And you're right, I want to be iterating over the indices of the array, not the values. I certainly hope there aren't 7 million elemnts in the array! I think 70 is far more than I am expecting. As for you're suggestion of:

foreach my $index ( 0 .. $#array )

Would I have to write that as:

foreach my $index ( 0 .. $#matches{$fastaseq}{$sitekey} )?

As for undefined elements, I don't expect I'll see any. In a previous subroutine, I am pushing the positions of matches to an m// into the arrays in question, (that's what the 7 million coresponds to), so I expect all array elements will be numerical. Whether or not the array is undefined, however, depends entirely on whether or not m// came back as true. That's why I threw the if (@) in there.

Thanks.
Matt

In reply to Re^2: foreach in HoHoA problems by mdunnbass
in thread foreach in HoHoA problems by mdunnbass

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