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

The loopish way would be like:

@e = (1,2,3,4);
my $foo;
$foo += $_ for @e;
[download]

or you can do something like (still a loop, but you need to loop in some way for this):

@e = (1,2,3,4);
print eval join '+', @e;
[download]

Cheers,
KM

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Re: Answer: How can I add all the numbers in an array with out doing a foreach loop? by ack (Deacon) on Sep 10, 2009 at 17:16 UTC
You can do it with grep as: `#!/user/bin/perl use strict; use warnings; my @array = (1,2,3,4,5,6,7,8,9,10); my $sum = 0; grep{$sum += $_} @array; print "\$sum = $sum\n"; exit(0);` [download] The result is: `$sum = 55` [download] ack Albuquerque, NM	[reply] [d/l] [select]
RE: Answer: How can I add all the numbers in an array with out doing a foreach loop? by Adam (Vicar) on Jun 09, 2000 at 23:43 UTC
Your first answer is really a foreach loop. Remember that for and foreach are synonyms. Your second answer, however, is very slick! Nice.	[reply]
RE: RE: Answer: How can I add all the numbers in an array with out doing a foreach loop? by KM (Priest) on Jun 09, 2000 at 23:45 UTC
Hence me saying 'The loopish way..'. Actually, they are both loops. I believe internally join() still loops to actually join all the elements. It isn't a loop like a for or foreach. Cheers, KM	[reply]
RE: RE: RE: Answer: How can I add all the numbers in an array with out doing a foreach loop? by Adam (Vicar) on Jun 09, 2000 at 23:48 UTC
Right, I was just pointing out that using 'for' doesn't answer the question of not using a 'foreach' loop. It looks kind of funny when the question stipulates that the person doesn't want to use something, and then you use it in your answer. Thats all.	[reply]
RE: RE: RE: RE: Answer: How can I add all the numbers in an array with out doing a foreach loop? by KM (Priest) on Jun 09, 2000 at 23:52 UTC
RE: RE: RE: RE: RE: Answer: How can I add all the numbers in an array with out doing a foreach loop? by Adam (Vicar) on Jun 10, 2000 at 00:46 UTC
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Re: Answer: How can I add all the numbers in an array with out doing a foreach loop? by Tux (Canon) on Sep 10, 2009 at 19:07 UTC
`$ perl -wle'my@x=(0..10);$"="+";$\=~s/$/"@x"/ee;print""' 55 $` [download] Enjoy, Have FUN! H.Merijn	[reply] [d/l]