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MathGroup Archive 2000

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Re: Testing the Head of List Elements

  • To: mathgroup at smc.vnet.net
  • Subject: [mg25243] Re: Testing the Head of List Elements
  • From: dkeith at sarif.com
  • Date: Sun, 17 Sep 2000 04:47:21 -0400 (EDT)
  • References: <8psf4k$9n1@smc.vnet.net>
  • Sender: owner-wri-mathgroup at wolfram.com


Here is one way:

selectStrings[lst_] := Select[lst, MatchQ[#, _String] &]

Best,

David

In article <8psf4k$9n1 at smc.vnet.net>,
  "Marshall Bartlett" <mgb_news at hotmail.com> wrote:
> I'm something of a newbie with Mathematica; please excuse my
ignorance.
>
> I am looking for a clever way to select elements from a list based on
their
> type (Head).  Specifically, I want to extract all the elements of type
> dtring from a list of elements of different types (string, number,
> character, etc.).
>
> Any suggestions?
>
> --
> --------------------------------------------------------------
> Marshall Bartlett
> Department of Geology and Geophysics
> University of Utah
> mgb_news at hotmail.com
> --------------------------------------------------------------
>
>


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