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MathGroup Archive 1997

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Re: A generalized Transpose?

  • To: mathgroup at smc.vnet.net
  • Subject: [mg9284] Re: A generalized Transpose?
  • From: "Xah" <xah at best.com>
  • Date: Mon, 27 Oct 1997 02:46:55 -0500
  • Organization: smtp.best.com
  • Sender: owner-wri-mathgroup at wolfram.com

In article <62h589$cg2 at smc.vnet.net>, Robert Villegas <villegas at wolfram.com>
wrote:
>One of the best ways to apply a function to, or group, corresponding
>elements of lists is to use a Listable function.  This will work when
>the "identical form" is an irregularly nested list ...

Hi Robby,

Can you give a spec for the behavior of Listable attribute? In other
words, how can I write a function

ListableBehavior[f_,args___]

such that the result returned is equivalent to executing f[args] where f
has the Listable attribute? (Of course, without using the build-in
Listable functionality.)

I dabbled with Thread, but don't have the exact solution.

 Xah, xah at best.com
 http://www.best.com/~xah/Wallpaper_dir/c0_WallPaper.html
 Mountain View, CA, USA
 "Java -- the modern backward language"


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