Re: list manipulation problem
- To: mathgroup at smc.vnet.net
- Subject: [mg9110] Re: [mg9062] list manipulation problem
- From: seanross at worldnet.att.net
- Date: Mon, 13 Oct 1997 23:33:22 -0400
- Sender: owner-wri-mathgroup at wolfram.com
Teemu Vesanen wrote:
>
> I have a list like=20
> {{a, b, c}, {d, e, f}, {g, h, i}}
> I need to delete the third term of each sublist.
> In other words how do I make the list look like
> {{a, b}, {d, e}, {g, h}}
How about Map[Take[#,2]&,{{a, b, c}, {d, e, f}, {g, h, i}}]?
The construct Take[#,2]& is called a pure function and is a useful
device in manipulating lists since it allows you to custom makea a
function that can be Mapped Threaded etc. across the elements of a list.