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Re: Conditional drop of list elements

  • To: mathgroup at smc.vnet.net
  • Subject: [mg63585] Re: [mg63557] Conditional drop of list elements
  • From: gardyloo <gardyloo at mail.wsu.edu>
  • Date: Fri, 6 Jan 2006 05:24:28 -0500 (EST)
  • References: <200601050812.DAA19845@smc.vnet.net>
  • Sender: owner-wri-mathgroup at wolfram.com

  One possible method:

Select[list1, First[#1] == 1 & ]


Regards,
         C.O.


LectorZ wrote:

>Hi guys,
>
>I need your assistance by the following problem:
>
>list1 = {{0,A,A,A}, {1,B,B,B}, {0,C,C,C}, {1,D,D,D}, {1,F,F,F},
>{0,G,G,G}, {0,H,H,H}}
>
>Every 1st element of the each sublist should be checked. Is the first
>element a ZERO, this sublist should be removed from the list. If it is
>a ONE - this sublist remains in the list.
>
>In this example the output should be:
>
>{{1,B,B,B}, {1,D,D,D},{1,F,F,F}}
>
>Thanks for your help!
>
>LZ
>
>
>  
>


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