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Date:         Wed, 29 Dec 2010 18:35:54 -0500
Reply-To:     Arthur Tabachneck <art297@ROGERS.COM>
Sender:       "SAS(r) Discussion" <SAS-L@LISTSERV.UGA.EDU>
From:         Arthur Tabachneck <art297@ROGERS.COM>
Subject:      Re: Fun With SAS - My Vote for Oddest SAS Programming Language
Comments: To: Paul Dorfman <sashole@BELLSOUTH.NET>


I totally agree, but also wish that SAS would actually create some extra functions, based on the ones you mention, but with with each being limited to accomplish basic functions.

E.g., A lot of confusion would have been avoided over the years if a REORDER function existed that was really just an extremely limited version of RETAIN.

Art ------ On Wed, 29 Dec 2010 18:12:19 -0500, Paul Dorfman <sashole@BELLSOUTH.NET> wrote:

>Mike, > >I would vote for RETAIN and LAG/DIF, as in my opinion, both are misnamed, >which alone has fostered endless heap of confusion in generations of SAS >programmers. > >Since RETAIN is a negative compile time imperative, I would rather have the >instruction name start with a negative prefix, say, NOSETMISS, NOAUTONULL, >etc., even if such neologisms roll off the tongue much more awkwardly than >RETAIN. An oddly shaped keyword is a lesser evil than countless neophytes >scratching their heads asking what the heck the statement tells SAS to >retain. > >Likewise, if LAG had been called QUEUE, a great body of SAS confusion could >have been avoided - both primary (based on not reading the documentation and >instead trying to ascertain the workings of LAG by code cannibalization), >and secondary (based, for example, on misguided recommendations to avoid >using LAG in conditional clauses and such). Perhaps it would be even better >if the functions were called something like QUEUEVAL and QUEUEDIF (or maybe >just QVAL and QDIF) - at least then no nonsensical impression would be >imparted that the functions have anything to do with the "current" and >"preceding" observations. > >And, on the seasonal note: Happy New Year, everyone! > >Kind regards >------------ >Paul Dorfman >Jax, FL >------------ > >On Wed, 29 Dec 2010 08:39:58 -0500, Michael Raithel ><michaelraithel@WESTAT.COM> wrote: > >>Dear SAS-L-ers, >> >>Each and every one of us who eats, drinks, breathes, sleeps, and dreams SAS >programming has one. It's that one feature of SAS that we think is kind >of... is very... is somewhat... well, odd. It could be an option, a format, >an informat, a function, a call routine, a statement, a PROC, etc. but it >exists and we scratch our heads and wonder why. >> >>If you can relate to this, let the list know your own vote for the oddest >SAS programming language feature. >> >>Here is one of mine: >> >>The EXCHANGE statement on PROC DATASETS swaps the names of two SAS data >sets. So, if it were executed against NEWFILE and OLDFILE, the name of >NEWFILE would be changed to OLDFILE and the name of OLDFILE would be changed >to NEWFILE. Consequently, the names of the two files would be exchanged. >And, it would happen in the flashing blur of a nanosecond! >> >>Here is an example: >> >>proc datasets library=work nolist; >>exchange newfile = oldfile; >>run; >>quit; >> >>In this example, we exchange the names of the NEWFILE and OLDFILE data >sets. The contents of each data set remains the same; it is just that they >got a name change. >> >>The EXCHANGE statement always reminds me of the Metamorphosis Illusion >( ). I think that in >the unlikely event that I ever use it in one of my programs, I will watch it >very, very closely to see if I can discern exactly how the trick is done:) >> >>Happy New Year to one and all! >> >>I hope that this suggestion proves helpful now, and in the future! >> >>Of course, all of these opinions and insights are my own, and do not >reflect those of my organization or my associates. All SAS code and/or >methodologies specified in this posting are for illustrative purposes only >and no warranty is stated or implied as to their accuracy or applicability. >People deciding to use information in this posting do so at their own risk. >> >>+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ >>Michael A. Raithel >>"The man who wrote the book on performance" >>E-mail: >> >>Author: Tuning SAS Applications in the MVS Environment >> >>Author: Tuning SAS Applications in the OS/390 and z/OS Environments, Second >Edition >> >> >>Author: The Complete Guide to SAS Indexes >> >> >>+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ >>One man's "magic" is another man's engineering. "Supernatural" is a null >word. - Robert A. Heinlein >>+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

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