Date: Tue, 29 Jul 2008 21:52:07 -0400
Reply-To: "Howard Schreier <hs AT dc-sug DOT org>"
<schreier.junk.mail@GMAIL.COM>
Sender: "SAS(r) Discussion" <SAS-L@LISTSERV.UGA.EDU>
From: "Howard Schreier <hs AT dc-sug DOT org>"
<schreier.junk.mail@GMAIL.COM>
Subject: Re: tip: Macro Design Checklist
Seems to be half and half. COUNTC is in 9.1.3 doc
(http://support.sas.com/onlinedoc/913/getDoc/en/lrdict.hlp/a002260840.htm).
COUNTW appears in the What's New part of 9.2 doc
(http://support.sas.com/documentation/cdl/en/whatsnew/61982/HTML/default/lrdictwhatsnew902.htm).
On Tue, 29 Jul 2008 20:01:27 -0400, Bucher Scott <SBucher@SCHOOLS.NYC.GOV>
wrote:
>Thanks. They seem to be missing from the SAS 9.1.3 language dictionary.
>
>Scott Bucher
>
>-----Original Message-----
>From: toby dunn [mailto:tobydunn@hotmail.com]
>Sent: Tuesday, July 29, 2008 8:00 PM
>To: Bucher Scott; sas-l@listserv.uga.edu
>Subject: RE: tip: Macro Design Checklist
>
>
>Scott ,
>
>CountW and CountC is available in 9.1.3
>
>
>Toby Dunn
>
>"Don't bail. The best gold is at the bottom of barrels of crap."
>Randy Pausch
>
>"Be prepared. Luck is where preparation meets opportunity."
>Randy Pausch
>
>
>> Date: Tue, 29 Jul 2008 11:07:21 -0400
>> From: SBucher@SCHOOLS.NYC.GOV
>> Subject: Re: tip: Macro Design Checklist
>> To: SAS-L@LISTSERV.UGA.EDU
>>
>> Thanks. I think countW is new to 9.2, which I don't anticipate getting
>> it anytime soon. I am aware of the approach you present, but
>personally
>> I find %wordcount simpler to read and understand (which is as good a
>> reason to use a macro as any), especially when nesting loops like
>this.
>> Like the broader question of named v. positional parameter, use of the
>> '.' suffix, etc. at some point it boils down to context and taste.
>>
>> -Scott
>>
>> -----Original Message-----
>> From: data _null_, [mailto:datanull@gmail.com]
>> Sent: Tuesday, July 29, 2008 10:40 AM
>> To: Bucher Scott
>> Cc: SAS-L@listserv.uga.edu
>> Subject: Re: tip: Macro Design Checklist
>>
>> I thought you might say that, so only reason you counted the words was
>> to be about to write %DO I = 1 %TO (calculated value) which seem
>> pointless to me.
>>
>> Although nowadays I prefer to avoid this type of macro coding
>> altogether, it does have some utility. A little bit of restructuring
>> and you have code that does not rely on a macro you don't need.
>>
>> 1 %macro NotUsingWordsMacro(seasons=summer spring fall winter);
>> 2 %local i w;
>> 3 %let i = %eval(&i + 1);
>> 4 %let w = %scan(&seasons,&i,%str( ));
>> 5 %do %while(%superQ(w) ne);
>> 6 %PUT NOTE: Processing the &i.th word(&w);
>> 7 %let i = %eval(&i + 1);
>> 8 %let w = %scan(&seasons,&i,%str( ));
>> 9 %end;
>> 10 %put NOTE: It doesn%str(%')t really matter but the list has
>> %eval(&i-1) words;
>> 11 %mend notUsingWordsMacro;
>> 12
>> 13 %notUsingWordsMacro;
>> NOTE: Processing the 1th word(summer)
>> NOTE: Processing the 2th word(spring)
>> NOTE: Processing the 3th word(fall)
>> NOTE: Processing the 4th word(winter)
>> NOTE: It doesn't really matter but the list has 4 words
>>
>> For the very rare case where the number of words is needed just code.
>>
>> %sysfunc(countW(
>>
>>
>> On 7/29/08, Bucher Scott wrote:
>>> For looping through a list of items, i.e.;
>>>
>>> %let seasons = summer spring fall winter; %do I = 1 %to
>>> %wordcount(&seasons);
>>> %let season = %scan(&seasons, &i);
>>>
>>> %end;
>>>
>>>
>>> -Scott
>>>
>>> -----Original Message-----
>>> From: data _null_, [mailto:datanull@gmail.com]
>>> Sent: Tuesday, July 29, 2008 10:05 AM
>>> To: Bucher Scott
>>> Cc: SAS-L@listserv.uga.edu
>>> Subject: Re: tip: Macro Design Checklist
>>>
>>> Why would you need a macro to count words?
>>>
>>> On 7/29/08, Bucher Scott wrote:
>>>> I use positional parameters with macro functions that I use
>>>> frequently
>>>
>>>> and that have arguments that are few and relatively intutitive, e.g.
>>>> %wordcount(). If the macro functions has more than 3 arguments, I
>>>> use a combination of positional parameters and keyword parameters
>>>> with default values. I think the examples cited within the sasautos
>>>> library
>>>
>>>> were also macro functions.
>>>>
>>>> Regards,
>>>> Scott Bucher
>>>>
>>>>
>>>> -----Original Message-----
>>>> From: SAS(r) Discussion [mailto:SAS-L@LISTSERV.UGA.EDU] On Behalf Of
>>
>>>> Fehd, Ronald J. (CDC/CCHIS/NCPHI)
>>>> Sent: Tuesday, July 29, 2008 9:05 AM
>>>> To: SAS-L@LISTSERV.UGA.EDU
>>>> Subject: Re: tip: Macro Design Checklist
>>>>
>>>>> From: RolandRB
>>>>>
>>>>> On Jul 28, 10:06 pm, r...@CDC.GOV ("Fehd, Ronald J. (CDC/CCHIS/
>>>>> NCPHI)") wrote:
>>>>>> I have updated my Macro Design Checklist page
>>>>>>
>>>>>> http://www.sascommunity.org/wiki/Macro_Design_Issues_Checklist
>>>>>
>>>>> Your first tip is "always use named parameters".
>>>>
>>>>> This is a bad general tip to give
>>>>
>>>> My 20 years experience says otherwise.
>>>>
>>>>> as it depends on the circumstances.
>>>>
>>>> imnsho, those circumstances are usually that the macro is in a
>>> program.
>>>>
>>>> \begin{quote}
>>>> Note: These recommendations are for project and site macros, i.e.
>>>> macros not in a program, but in separate files.
>>>> \end{quote}
>>>>
>>>>> The SAS Institute
>>>>> itself does not follow this recommendation.
>>>>
>>>> yes, I know.
>>>> From my perspective on the HelpDesk
>>>> SAS Institute creates more problems for itself and its customers by
>>>> publishing Reeeeally! Bad Examples both in OnLine Doc, paper
>>>> manuals, and training courses.
>>>>
>>>>> Check out the %trim and
>>>>> %left macros that they distribute with their sasautos library.
>>>>
>>>> There are 500 macros provided in 300 files in 13 folders in the
>>>> sasautos library.
>>>> The only thing that I would recommend about them is that they have a
>>
>>>> fairly consistent header for their documentation.
>>>>
>>>> Ron Fehd the documentation maven
>>>> and the macro maven CDC Atlanta GA USA RJF2 at cdc dot gov
>>>>
>>>
>
>_________________________________________________________________
>Stay in touch when you're away with Windows Live Messenger.
>http://www.windowslive.com/messenger/overview.html?ocid=TXT_TAGLM_WL_mes
>senger2_072008
| 
