Re: how to map function with over 1 arguments to list
- To: mathgroup at smc.vnet.net
- Subject: [mg57219] Re: [mg57205] how to map function with over 1 arguments to list
- From: Sseziwa Mukasa <mukasa at jeol.com>
- Date: Sat, 21 May 2005 02:39:35 -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.
In this case you want to use Apply
f@@@{{1,1},{2,2}}
If you want to use Map then
f[#[[1]],#[[2]]]&/@{{1,1},{2,2}}
will work. If you want to see details on how these methods work use
Trace eg. Trace[f@@@{{1,1},{2,2}}].
Later,
Ssezi
- 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