Re: Sum of list elements
- To: mathgroup at smc.vnet.net
- Subject: [mg49320] Re: Sum of list elements
- From: spam at husumtoften.invalid (Per Rønne)
- Date: Wed, 14 Jul 2004 07:29:25 -0400 (EDT)
- References: <cd0bgd$aik$1@smc.vnet.net>
- Reply-to: spam at husumtoften.dk (Per Rønne)
- Sender: owner-wri-mathgroup at wolfram.com
Florian Jaccard <florian.jaccard at eiaj.ch> wrote:
> Is this what you want ?
>
> In[193]:=
> liste={2,2,1};
>
> In[195]:=
> Plus@@liste
>
> Out[195]=
> 5
>
> In[196]:=
> 1/Plus@@liste*liste
>
> Out[196]=
> {2/5, 2/5, 1/5}
Thank you very much to you and Ravinder Kumar B. Instead, I was trying
with something like:
sum[l_] := Module[
{c = 0},
Do[c = c + l[[i]], {i, Length[l]}]; Return[c]]
But of course the use of Apply [@@] is a better solution.
BTW, I don't understand why threads in this newsgroup are grouped so
loosely. It can be seen in MacSOUP, in the tree window, that there
should be missing answers?
--
Per Erik Rønne