Re: List Help Needed
- To: mathgroup at smc.vnet.net
- Subject: [mg68863] Re: List Help Needed
- From: Jean-Marc Gulliet <jeanmarc.gulliet at gmail.com>
- Date: Mon, 21 Aug 2006 06:33:18 -0400 (EDT)
- Organization: The Open University, Milton Keynes, UK
- References: <ecbo4l$r5j$1@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
Nimrod wrote:
> What combination of Map, MapAt, ...
>
> will transform {{a,b},{c,d},...} to {{a,f[b]},{c,f[d]},...}
lst = {{a, b}, {c, d}, {e, f}};
lst /. {x_, y_} -> {x, f[y]}
--> {{a, f[b]}, {c, f[d]}, {e, f[f]}}
({#1[[1]], f[#1[[2]]]} & ) /@ lst
--> {{a, f[b]}, {c, f[d]}, {e, f[f]}}
HTH,
Jean-Marc