From bolker@zoo.ufl.edu  Wed Nov  8 13:16:56 2000
From: bolker@zoo.ufl.edu (bolker@zoo.ufl.edu)
Date: Wed, 8 Nov 2000 08:16:56 -0500 (EST)
Subject: [Rd] Re: [R] .Last.value or % or ANS or ... (was unix)
In-Reply-To: <x27l6f5lny.fsf@blueberry.kubism.ku.dk>
Message-ID: <Pine.LNX.4.10.10011080814470.2899-100000@bolker.zoo.ufl.edu>


  I see that this simple solution has troubles.
  I think part of the way Mathematica deals with is by doing slick things
with storage, not storing multiple copies of identical objects.  I
understand that .Alias is scary, but would there be any way of using the
same mechanism to keep a buffer/stack/list/whatever of links to previous
answers?

On 8 Nov 2000, Peter Dalgaard BSA wrote:

> "Charles C. Berry" <cberry@tajo.ucsd.edu> writes:
> 
> > Admittedly, this is NOT the same as having a stack of objects...
> 
> It would be no big deal to create a stack of objects resulting from
> the last N expressions. What I'm not too sure about is whether you'd
> really want that. Notice that it could imply keeping several copies of
> a data set in memory. E.g. the value of an assignment like "data <-
> transform(data, logx=log(x))" is the value of the RHS.
> 
> 

-- 
318 Carr Hall                                bolker@zoo.ufl.edu
Zoology Department, University of Florida    http://www.zoo.ufl.edu/bolker
Box 118525                                   (ph)  352-392-5697
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[Rd] Re: [R] .Last.value or % or ANS or ... (was unix)
bolker@zoo.ufl.edu