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MathGroup Archive 2005

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Re: multiple choice IF condition

  • To: mathgroup at smc.vnet.net
  • Subject: [mg56459] Re: multiple choice IF condition
  • From: Marcus Stollsteimer <marcus314 at yahoo.com>
  • Date: Tue, 26 Apr 2005 01:33:13 -0400 (EDT)
  • Organization: Comp.Center (RUS), U of Stuttgart, FRG
  • References: <d4hvhj$1ha$1@smc.vnet.net>
  • Sender: owner-wri-mathgroup at wolfram.com

marloo3 at mail15.com wrote:

> could we have a more practical way than this way of choosing some
> numbers of the choice:
> 
> a = 0;
> Table[If[i == 3 || i == 5 || i == 9 || i==18, a = a + i], {i, 20}]
> 
> ie: i wish if it is possible like this:
> If[i==3 ||5 ||9||18, ...]


If[MemberQ[{3, 5, 9, 18}, i], ...]


Regards,
Marcus

-- 
It is awfully hard work doing nothing. -- Oscar Wilde


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