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Re: holding boxes verbatim

• To: mathgroup at smc.vnet.net
• Subject: [mg56237] Re: holding boxes verbatim
• From: dh <dh at metrohm.ch>
• Date: Wed, 20 Apr 2005 05:30:12 -0400 (EDT)
• References: <d42l18$3gf$1@smc.vnet.net>
• Sender: owner-wri-mathgroup at wolfram.com

Hi Chris,
I do not fully understand your question, but if it is only the 
evaluation that bugs you, see below:

Chris Chiasson wrote:
> Dear Math Group gurus,
> 
> Mathematica is annoying me. I would like some way to type in a two
> dimensional box form (representing an arbitrary expression) and assign
> it to a symbol. I would then like to be able to operate on the
> expression by, for instance:
> 1 printing it
> 2 printing it with some variables' values substitued into it
> 3 and finally evaluating it
> 
> Hold and its variants do not do the job because they prevent
> expression evaluation, but I need something that will keep its box
> form exactly as I have typed it.

if you say:
ReleaseHold[ expr ]
expr will be evaluated even if it contains Hold.
Sincerely, Daniel
> 
> Please, how does one do this?
> 
> A method for doing this is very useful to me because my professors
> like to see the variables substitued into the original (not
> Mathematica reparsed original, but verbatim original) equations.
> 
> Thank you for your very valuable time,