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st: RE: [programming] using -if- in do file


From   "Nick Winter" <nwinter@policystudies.com>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: RE: [programming] using -if- in do file
Date   Thu, 12 Dec 2002 10:53:44 -0500

> -----Original Message-----
> From: FEIVESON, ALAN H. (AL) (JSC-SD) (NASA) 
> [mailto:alan.h.feiveson@nasa.gov] 
> Sent: Thursday, December 12, 2002 10:51 AM
> To: 'statalist'
> Subject: st: [programming] using -if- in do file
> 
> 
> Hello - Is there a way to restrict observations over which a do-file
> operates without using the -syntax- command? The syntax 
> command allows [if]
> and [in] options, but is extremely picky about using numbers 
> or non existent
> variable names in the argument list. Therefore I'd rather 
> check for the -if-
> condition directly. I assume there must be some system macro 
> which stores
> the -if- or -in- condition. How can I get it without using -syntax- ?

I assume you mean to say "ado-file", not "do-file".  

My approach, if you want the if/in and/or options parsing capability of
syntax, would be to use the "anything" argument of -syntax-, which
allows an arbitrary set of stuff where the varlist would normally go.

	syntax anything [if] [in] , OPtion(string)

See -help syntax-

-Nick Winter
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