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Re: st: Re: Loop syntax

From   Maarten buis <>
Subject   Re: st: Re: Loop syntax
Date   Thu, 27 Mar 2008 13:20:37 +0000 (GMT)

--- Johannes Geyer <> wrote:
> @Nick: What is the difference between -total()- and -sum()- that
> makes the latter better than the other?

You can find that out by yourself if you knew that functions in egen
are stored in _g<functionname>.ado . So, if you type:

viewsource _gtotal.ado


viewsource _gsum.ado

You can see that -sum()- calls -total()-, leading to unnecesary
overhead, otherwise the two are the same. 

Hope this helps,

Maarten L. Buis
Department of Social Research Methodology
Vrije Universiteit Amsterdam
Boelelaan 1081
1081 HV Amsterdam
The Netherlands

visiting address:
Buitenveldertselaan 3 (Metropolitan), room Z434

+31 20 5986715

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