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Re: Variable question

  • To: mathgroup at smc.vnet.net
  • Subject: [mg92506] Re: Variable question
  • From: Jean-Marc Gulliet <jeanmarc.gulliet at gmail.com>
  • Date: Thu, 2 Oct 2008 04:34:48 -0400 (EDT)
  • Organization: The Open University, Milton Keynes, UK
  • References: <gc0tkn$9ci$1@smc.vnet.net>

Johney at giganews.com wrote:

> I have the following test code
> 
> c = 3
> var = "c"
> v = StringTake[var, {1}]
> v
> 
> 
> v is showing up as c but I want it to show up as 3.  Is there a way to do this?

What you are looking for is the built-in function *ToExpression*, which 
takes a string of characters as argument, transforms it into a regular 
Mathematica expression that is evaluated, then the result of the 
evaluation is returned.

   In[1]:= c = 3
           var = "c"
           v = ToExpression[var]
           v

   Out[1]= 3

   Out[2]= "c"

   Out[3]= 3

   Out[4]= 3

Regards,
-- Jean-Marc


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