Beefy Boxes and Bandwidth Generously Provided by pair Networks
Problems? Is your data what you think it is?

Re^2: Efficient way to sum columns in a file

by Roy Johnson (Monsignor)
on Apr 13, 2005 at 20:40 UTC ( #447580=note: print w/replies, xml ) Need Help??

in reply to Re: Efficient way to sum columns in a file
in thread Efficient way to sum columns in a file

Although still slower than having separate variables for each column, this was a bit faster (and shorter) than your middle test:
time perl -nle'my $i=0;$a[$i++]+=$_ for (split/,/);END{print join "\t" +, @a}' numbers.csv
At only about 50% slower than the fastest solution, its brevity and adaptability might recommend it.

Caution: Contents may have been coded under pressure.

Log In?

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://447580]
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others drinking their drinks and smoking their pipes about the Monastery: (5)
As of 2016-10-26 05:26 GMT
Find Nodes?
    Voting Booth?
    How many different varieties (color, size, etc) of socks do you have in your sock drawer?

    Results (335 votes). Check out past polls.