Re: how to map function with over 1 arguments to list
- To: mathgroup at smc.vnet.net
- Subject: [mg57225] Re: [mg57205] how to map function with over 1 arguments to list
- From: János <janos.lobb at yale.edu>
- Date: Sat, 21 May 2005 02:39:49 -0400 (EDT)
- References: <200505200844.EAA00690@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
On May 20, 2005, at 4:44 AM, xun wrote:
> Hi, all,
>
> g[x_]:=x^2;
> g/@{1,2,3} results in{1,4,9}
>
> similarly, how to map f[x_,y_]:=x+y;
> to {1,1},{2,2}?
>
> it seems that f/@{{1,1},{2,2}} doesn't work.
>
> Thx.
> Xun
>
>
>
>
In[1]:=
f[x_, y_] := x + y;
In[4]:=
lst={{1,1},{2,2},{3,3}}
Out[4]=
{{1,1},{2,2},{3,3}}
In[9]:=
(f[#1[[1]], #1[[2]]] & ) /@
lst
Out[9]=
{2, 4, 6}
This is what you need ? Or did you mean:
In[21]:=
Total[lst]
Out[21]=
{6, 6}
János
- References:
- how to map function with over 1 arguments to list
- From: "xun" <xiaoxun@gmail.com>
- how to map function with over 1 arguments to list