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RE: st: RE: Macro questions. (Again).


From   "Nick Cox" <[email protected]>
To   <[email protected]>
Subject   RE: st: RE: Macro questions. (Again).
Date   Wed, 11 Aug 2004 15:55:27 +0100

Nick 
[email protected] 

> -----Original Message-----
> From: [email protected]
> [mailto:[email protected]]On Behalf Of David Kantor
> Sent: 11 August 2004 15:12
> To: [email protected]
> Subject: Re: st: RE: Macro questions. (Again).
> 
> 
> Amadou wrote:
> 
> At 08:27 AM 8/11/2004 -0400, you wrote:
> >Nick,
> >When I talk about working inside macros, I am thinking of something
> >like this:
> >I know that one can increment a macro by doing: local myvars 
> "`myvars' var1"
> >But why can't we REMOVE var1 from the macro myvars?
> >Something like (it's just an example, but maybe you have 
> another syntax):
> >
> >local myvars "`myvars' , -var1"
> >
> >(where -var1 is intented to tell Stata to remove var1 from myvars).
> >[...]
> 
> You should check -help macrolists-, in particular, you would want...
>   local toremove "var1"
>   local myvars: list myvars - toremove
> 
> to do what you meant by...
>   local myvars "`myvars' , -var1"
> 
> You could also use a separate name, if you prefer:
>   local mynewvars: list myvars - toremove
> 
> But do see -help macrolists- for a large set of macro list operations.
> 
> I hope this helps.
> -- David
> 
> 
> David Kantor
> Institute for Policy Studies
> Johns Hopkins University
> [email protected]
> 410-516-5404
> 
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