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RE: st: RE: Re: statalist-digest V4 #1868

From   "Nick Cox" <[email protected]>
To   <[email protected]>
Subject   RE: st: RE: Re: statalist-digest V4 #1868
Date   Mon, 31 Jan 2005 10:09:17 -0000

prelist is born empty, or so the code 
fragment presumes, but each time 
round the loop it accretes the latest 
name assigned by the preceding -tempvar-. 

The double quotes are just a matter of style
on my part, as I like to underline to myself 
-- and to any readers of the code -- that
the string interpretation is paramount. 
As you say, it would work without them. 

[email protected] 

Joseph Coveney
> Nick Cox wrote (excerpted):
> use auto.dta, clear
> ologit rep78 price turn
> forval j = 1/`e(k_cat)' { 
> 	tempvar pre
> 	local prelist "`prelist' `pre'" 
> }
> predict `prelist'  
> --------------------------------------------------------------
> -----------------
> Nick,
> You put the double quotes in -local prelist "`prelist' 
> `pre'"- for a purpose.  
> The code works at least in this case without them, and so I'm 
> curious why you 
> included them, what the potential pitfall is that they're 
> there to guard against.

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