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Re: st: r(varlist)


From   Nick Cox <njcoxstata@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: r(varlist)
Date   Thu, 8 Nov 2012 17:14:43 +0000

-display- is two things bundled in one: a calculator and a command to
show results. Its built-in inclinaton, given variable (or any other)
names, is to evaluate them and show the result of evaluating them. To
get -display- to hold off evaluating things, supplying " "  underlines
that you want to see strings, i.e. the names, not the result of
evaluating those names.

Nick

On Thu, Nov 8, 2012 at 4:33 PM, Maarten Buis <maartenlbuis@gmail.com> wrote:
> You'll get the same again if you type: di "`r(varlist)'".
>
> The logic behind what you saw is that
>
> di `r(varlist)'
>
> is like typing
>
> di make price mpg rep78 headroom trunk weight length turn displacement
> gear_ratio foreign
>
> Which means "display the content of the first observation of each of
> these variables".
>
> Hope this helps,
> Maarten
>
> On Thu, Nov 8, 2012 at 5:26 PM, tashi lama <ltashi32@hotmail.com> wrote:
>> Hello all,
>>   sysuse auto, clear
>>   ds
>>   return list
>>
>> macros:
>>             r(varlist) : "make price mpg rep78 headroom trunk weight length turn displacement gear_ratio foreign"
>>
>> di r(varlist)
>> make price mpg rep78 headroom trunk weight length turn displacement gear_ratio foreign
>>
>> Since r(varlist) is a macro, do I not say
>> di `r(varlist)'
>> Surprisingly, when I say di `r(varlisr)' gives me   AMC Concord40992232.5112930186401213.57999990
>>
>>
>> Am I missing something here??
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