With regard to your creation of an array and subsequent iteration, it is possible to index the array returned by split and therefore avoid the subsequent iteration:

$sum += (split(/,/))[5];

While indexing in this fashion is useful, I think the @F method would be faster in this case.

In reply to Re: Efficient way to sum columns in a file by eibwen
in thread Efficient way to sum columns in a file by sk

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