Date: Mon, 20 Aug 2007 22:14:30 -0400
Reply-To: "Howard Schreier <hs AT dc-sug DOT org>" <nospam@HOWLES.COM>
Sender: "SAS(r) Discussion" <SAS-L@LISTSERV.UGA.EDU>
From: "Howard Schreier <hs AT dc-sug DOT org>" <nospam@HOWLES.COM>
Subject: Re: How the function First. work in this case?
On Thu, 16 Aug 2007 16:45:56 -0400, Fehd, Ronald J. (CDC/CCHIS/NCPHI)
>Either Don Henderson or Ian Whitlock
>came up with code for the subsetting do loop
It's useful for stuff other than subsetting.
>-- occasionally referrred to as the DOW loop --
Then if Don were getting the credit it would be a DoH loop.
>which uses either of:
It can use a variety of conditions in the UNTIL, depending on the situation.
However a FIRST-dot condition does not seem to be one of the useful ones.
>to read a dataset and output only the selected row
>I provide an example in this paper sgf2007.067:
>DO Which? Loop, UNTIL, or WHILE?
>A Review of DATA Step and Macro Algorithms
>Ron Fehd the macro maven CDC Atlanta GA USA RJF2 at cdc dot gov