This line: 

/^(.*)\t(.*)$/ && $f{ $1 } += $2;

[download]
won't compile ("Can't modify logical and (&&) in addition (+)"). Of course, it should read: 
/^(.*)\t(.*)$/ and $f{ $1 } += $2;

[download]
Apart from that, I believe your code is correct -- and a big improvement on the OP's original code (which I couldn't look at without putting on sunglasses ;-).

In reply to Re^2: Long list is long by eyepopslikeamosquito
in thread Long list is long by Chuma

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