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.