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st: counting number of variables in a varlist

From   "ali hashemi" <>
To   <>
Subject   st: counting number of variables in a varlist
Date   Wed, 15 Jun 2011 17:59:42 -0400

Dear list members,

I would like to count the number of variables in a varlist. The way I manage
to do this is as follows:

local i=0
foreach var in x1 x2 {
local i=`i'+1

I was wondering if there is any built-in command which does the same thing.

Any help is much appreciated

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