Fwd: st: to check if a variable already exists

["Eva Poen" <eva.poen@gmail.com>]

I imagine this was meant to go to the list.

Eva


---------- Forwarded message ----------
From: Jacob Wegelin <jwegelin@vcu.edu>
Date: 2008/10/6
Subject: Re: st: to check if a variable already exists
To: Eva Poen <eva.poen@gmail.com>



Dear Eva,

Thank you. For the record (in case anyone else is as in need of this
information as I am), here is a way to do it.

capture program drop myTRY
program define myTRY
       capture confirm variable `1'
       if _rc==0 {
               di "`1' already exists, so ..."
               }
       else {
               di "`1' does not exist yet, so maybe we want to first
generate it ..."
               }
end

myTRY "dogAndCAT"

myTRY dogAndCat

myTRY Age

Jake

Re: st: to check if a variable already exists