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MathGroup Archive 2005

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Re: Assign a value to a variable

  • To: mathgroup at smc.vnet.net
  • Subject: [mg63014] Re: Assign a value to a variable
  • From: dh <dh at metrohm.ch>
  • Date: Sun, 11 Dec 2005 04:56:35 -0500 (EST)
  • References: <dnedkh$tf$1@smc.vnet.net>
  • Sender: owner-wri-mathgroup at wolfram.com

Hi Ben,
The operator Set has the Attribute "HoldFirst". It therefore does not 
evaluate the lefthand side of lhs = rhs.
You can force an evaluation by:

Evaluate[lhs]=rhs

Daniel

Ben Becker wrote:
> Hi!
> 
> I have a list of variables:
> vars = {a, b, c, d, e, f, g, h, i}
> 
> and a list of numbers:
> numbers = Range[9]
> 
> Now i'd like to choose randomly a variable and a number. and then i'd 
> like to assign the number to the variable.
> I thought of somehting like that:
> 
> vars[[Random[Integer, {1, Length[vars]}]]] =
> numbers[[Random[Integer, {1, Length[numbers]}]]]
> 
> but it doesn't work.
> 
> i hope you have an idea!
> 
> thank you for answering!
> 
> MFG Ben
> 


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