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MathGroup Archive 2007

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Re: List manipulation

  • To: mathgroup at smc.vnet.net
  • Subject: [mg73256] Re: [mg73248] List manipulation
  • From: Stern <nycstern at gmail.com>
  • Date: Fri, 9 Feb 2007 02:15:19 -0500 (EST)
  • References: <200702080848.DAA05054@smc.vnet.net>

I would use nested Maps, as in the following:

liste = {{a1, a2, a3}, {b1, b2, b3}, {c1, c2, c3}};

Map[f, Map[Union[#, {e}] &, liste]]

 -> {f[{a1, a2, a3, e}], f[{b1, b2, b3, e}], f[{c1, c2, c3, e}]}

as you asked for.

Michael




On 2/8/07, sepp <gary.larson at gmx.at> wrote:
> hello,
> I would like to combine list elements in the following way:
>
> I have a list with
> liste={{a1,a2,a3},{b1,b2,b3},{c1,c2,c3},.....}
> and a single element {e}
>
>
> I would to add the element {e} to each sublist to get something like
> liste_new={ {a1,a2,a3,e},{b1,b2,b3,e},{c1,c2,c3,e},.....}
> so that finally I can apply a function f on the list
> liste_manipulated={f[ {a1,a2,a3,e}],f[{b1,b2,b3,e}],f[{c1,c2,c3,e}],.....}
>
> I had a look at thread, mapthread, inner, outer, but nothing really
> seems to fit...
> thank you in advance for useful comments!
>
>
>


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