Re: st: -syntax , option(varlist min=0)-?

[Jeph Herrin <junk@spandrel.net>]

Thanks for the tip. I knew there must be a trick somewhere.
I can even do this, no?

  capture syntax varlist, myoption(varname)
  if _rc {
 	syntax varlist, myoption
  }

cheers,
J


Sergiy Radyakin wrote:
> Dear Jeph,
>
> try:
>
> capture syntax varlist, myoption(varname)
> if !_rc {
>
>   //program implementation for syntax1
>
>   ....
>   exit
> }
>
> syntax varlist, myoption
> // program implementation for syntax2
>
> this is often used when there are several distinct syntaxes possible
> for a command.
> See for example the implementation of -test- in test.ado.
>
> Best regards, Sergiy Radyakin
>
>
>
>
>
> On Thu, Oct 8, 2009 at 2:13 PM, Jeph Herrin <junk@spandrel.net> wrote:
> > I would like a program to take an option which contains
> > either a varlist or nothing. Something like
> >
> >  syntax varlist..., myoption(varlist min=0)
> >
> > which Stata doesn't like. The idea is that -myoption-
> > only applies to the listed variables in the primary varlist;
> > unless -myoption()- is specified, then it applies to all
> > variables in the primary varlist. This sounds confusing
> > even to me, so in pseudo code, I would like to have
> >
> >  myprogram var1-var10, myoption(var1)
> >
> > apply the option to only -var1-, but
> >
> >  myprogram var1-var10, myoption
> >
> > apply the option to var1-var10. Seems like I have done this
> > before, but it escapes me now. Any ideas?
> >
> >
> >
> > thanks,
> > Jeph
> > *
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>
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