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Re: What is the purpose of the Defer Command?

  • To: mathgroup at smc.vnet.net
  • Subject: [mg82122] Re: What is the purpose of the Defer Command?
  • From: Vince Virgilio <blueschi at gmail.com>
  • Date: Fri, 12 Oct 2007 03:04:49 -0400 (EDT)
  • References: <fe4uhp$155$1@smc.vnet.net><fefhui$j6c$1@smc.vnet.net>

On Oct 9, 5:34 am, "David Park" <djmp... at comcast.net> wrote:
> Still, my question is: "What is the purpose of the Defer Command?"
>
> The only potential purpose that I can see is for didactic purposes, to show
> preliminary expressions before they are automatically evaluated. But the
> only way to get Defer to evaluate is by copying and pasting and then
> evaluating,  by using Shift-Ctrl-L and then evaluating, or by evaluating in
> place. All of these operations leave no record of the steps taken. That goes
> contrary to any didactic purpose.
>
> --
> David Park
> djmp... at comcast.nethttp://home.comcast.net/~djmpark/

Have you noticed the example in the documentation (http://
reference.wolfram.com/mathematica/ref/Defer.html) that uses Defer to
create cells with unevaluated contents? That has didactic potential.

Can that example be rewritten without Defer, with similar complexity?

Vince Virgilio



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