Date:         Tue, 15 Jan 2008 11:55:01 -0500
Reply-To:     "Fehd, Ronald J. (CDC/CCHIS/NCPHI)" <rjf2@CDC.GOV>
Sender:       "SAS(r) Discussion" <SAS-L@LISTSERV.UGA.EDU>
From:         "Fehd, Ronald J. (CDC/CCHIS/NCPHI)" <rjf2@CDC.GOV>
Subject:      Re: Question on Do-Whitlock (DOW) loop.
In-Reply-To:  <7367b4e20801150829p7b851878hf6480c4371945e2e@mail.gmail.com>
Content-Type: text/plain; charset=us-ascii

I provided these test programs
in response to Ian's note that one shouldn't show bad or slow code

the programs show that the do until(EndoFile) wrapper
does not speed up the processing
at least in this test case.

I use do until(EndoFile) all the time to differentiate
the compile processing of the data structure
from the execution.

hth
Ron

> -----Original Message-----
> From: data _null_, [mailto:datanull@gmail.com]
> Sent: Tuesday, January 15, 2008 11:29 AM
> To: Fehd, Ronald J. (CDC/CCHIS/NCPHI)
> Cc: SAS-L@listserv.uga.edu
> Subject: Re: Question on Do-Whitlock (DOW) loop.
>
> I fail to see how this program relates to IW's argument about
> enclosing DO UNTIL(LAST.byvar) in DO UNTIL(EOF);
>
> Assuming that the first published reference is the 1983 SUGI paper by
> DH.  Why was DO UNTIL(LAST.byvar) never offered as a solution to a
> question on SAS-L before IWs post in 2000.  I tried searching via
> Google groups and found nothing.  But the fact that I did not find it
> means little, my search may have been flawed.