Hello Nick,
I leave the implementation details up to the higher authority
realising that there is always a possibility to declare it n-class
(for network commands) or return results in a global (similar to
S_MACH or S_OSDTL) so that it does not bite anyone.
As for changing the class of commands, I think it is up to the
programmers to write robust code and not rely on the current
declaration of commands. E.g. if -foo- is rclass and -bar- is not, it
is not robust to write:
foo arguments1
bar arguments2
// here analyse the r()-results of foo
because in the future if bar becomes r-class (or utilizes r-class
commands within itself) it will destroy foo's results. A good practice
is to retireve saved results immediately after the command that
produced them.
Best regards,
Sergiy Radyakin
On Fri, Oct 24, 2008 at 9:57 AM, Nick Cox <[email protected]> wrote:
> Making -net- r-class would necessarily mean that net access would zap
> the results left behind by any other r-class command, quite apart from
> any criteria for what an r-class command should be. I think that would
> bite far more people than it helped.
>
> I can see a case for leaving something in memory, but it would be better
> (say) c-class.
>
> Nick
> [email protected]
>
> Sergiy Radyakin replied to Kit Baum
>
> thank you, -wget- worked fine. I tried -telnet- before, but it was not
> redirecting either.
> I agree to the security provisions, but if the URL2 were accessible
> for programmers, then I could decide within my program whether to
> follow it or not. Since Stata currently extracts that new URL from the
> server's response, I believe there is not too much cost of saving it
> to an r() value. Relying on an external utility for this purpose
> limits portability of the resulting .do file, and adds to testing,
> maintanence and deployment headaches.
>
>
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