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Re: naming data sets
From: |
Jason Stover |
Subject: |
Re: naming data sets |
Date: |
Fri, 16 Dec 2005 21:55:26 +0000 |
User-agent: |
Mutt/1.4.2.1i |
On Fri, Dec 16, 2005 at 08:39:02AM -0800, Ben Pfaff wrote:
> Here's what I'd add to the PSPP language:
>
> * Some extra syntax on FILE HANDLE for declaring
> temporary file handles (MODE=TEMPORARY perhaps).
>
> * A new command for destroying temporary file handles
> (e.g. CLOSE FILE HANDLE or DELETE FILE HANDLE), so that
> the memory or disk space used to store them can be
> freed up.
>
> * GET, SAVE, XSAVE would be extended to read and write to
> temporary file handles. I'd introduce some kind of
> syntactic sugar so that it wasn't strictly necessary to
> declare temporary file handles in advance,
> e.g. something like XSAVE OUTFILE=TEMPORARY
> <HANDLENAME> would work properly.
>
> Internally, a temporary file handle would be represented by a
> dictionary plus a casefile, I think. When PSPP terminates, the
> data in temporary file handles would automatically disappear,
> just like data in the active file.
>
> This would be pretty easy to implement. Would it allow you to do
> what you want? Does it seem like a good idea?
Yes, this sounds good to me.
-Jason
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