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MathGroup Archive 2000

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Re: Subscripted local variables in Module

  • To: mathgroup at smc.vnet.net
  • Subject: [mg24017] Re: [mg24003] Subscripted local variables in Module
  • From: BobHanlon at aol.com
  • Date: Tue, 20 Jun 2000 03:07:33 -0400 (EDT)
  • Sender: owner-wri-mathgroup at wolfram.com

In a message dated 6/19/2000 1:59:55 AM, skker at skker.com writes:

>Why can't I use subscripted local variables in a Module?
>
>Module[{x[1], x[2]},
>   x[1] = 1;
>   x[2] = 2;
>   x[1] + x[2]
>   ]
>doesn't work. I could fix this code by replacing x[1] by x and x[2] by
>y. But there is a more serious problem when I want a non-fixed number of
>local variables.
>

You should have received an error message stating that x[1] and x[2] are not 
symbols. Believe the error message.

Module[{x},
   x[1] = 1;
   x[2] = 2;
   x[1] + x[2]
   ]

3

P.S. x[1] and x[2] are not subscripted. You have defined a discrete function.


Bob Hanlon


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