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Re: Answer: How can I add all the numbers in an array with out doing a foreach loop?

by Eily (Monsignor)
on Oct 22, 2013 at 07:44 UTC ( [id://1059196]=note: print w/replies, xml ) Need Help??


in reply to Re: How can I add all the numbers in an array with out doing a foreach loop?
in thread How can I add all the numbers in an array with out doing a foreach loop?

It does work, but you'll find that there is a very widespread rule among Perl users which is "Do not use grep or map in a void context". Often the argument is that it is because it uses extra memory for nothing. But Perl is smart enough and turning all uses of grep and map in a void context into a simple for loop could work fine. The problem, as MidLifeXis already said, is not that they don't do it right, is that it's not what they mean.

A for loop on the contrary was made for this kind of things. And the postfix version is even shorter than a grep or map in this case $sum+=$_ for @array;

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