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MathGroup Archive 1999

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Lists to mask other lists

  • To: mathgroup at smc.vnet.net
  • Subject: [mg19022] Lists to mask other lists
  • From: aram schiffman <aram at sirius.com>
  • Date: Tue, 3 Aug 1999 13:44:54 -0400
  • Organization: Posted via Supernews, http://www.supernews.com
  • Sender: owner-wri-mathgroup at wolfram.com

Howdy.

I am trying to use one list to control the content of a second list.
(It's not really masking, but...)

Here's what I mean. Let's say

maskList={1,0,0,1,1}


realDealList={aaa,bbb,ccc,ddd,eee}

(* could be filled with anything; same # elements as maskList }

If a 1 appears at position n of maskList, then I leave the corresponding
element of realDealList alone. But if a 0 appears, then I want to change
the corresponding element of realDealList in some prescribed way. Let's
say I change those elements to my first name (aram). Then realDealList
would become

{aaa,aram,aram,ddd,eee}

I can do this in a loop, which is a really clunky solution, but isn't
there a way I can Map across my list somehow?

Thanks,
Aram Schiffman


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