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MathGroup Archive 1997

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Re: list manipulation problem

  • To: mathgroup at smc.vnet.net
  • Subject: [mg9090] Re: [mg9062] list manipulation problem
  • From: penny at suu.edu (Des Penny)
  • Date: Mon, 13 Oct 1997 23:33:06 -0400
  • Sender: owner-wri-mathgroup at wolfram.com

>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}}


Hi Teemu:
The following will work:

In:

list={{a, b, c}, {d, e, f}, {g, h, i}};
f[{x_,y_,z_}]:={x,y}
Map[f,list]

Out:
{{a,b},{d,e},{g,h}}

You can also use a pure function:

In:
Map[{#[[1]],#[[2]]}&,list]

Out:
{{a,b},{d,e},{g,h}}


Cheers,


-------------------------------
Des Penny
Physical Science Dept.
Southern Utah University
Cedar City, UT 84720

VOICE: (Office): (801) 586-7708
       (Home)  : (801) 586-2286
FAX:    (801) 865-8051
e-mail: penny at suu.edu
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