R devel - Nov 2015 - Major Platform Discrepancies

I posted a question on stackoverflow dealing with determining elemental
existence in a vector, and to my surprise, the method that was brutally
slow for me on my PC was insanely fast on one of the member's platform (he
was running Linux).  You can view the details here.

http://stackoverflow.com/questions/33453141/most-efficient-way-to-determine-if-element-exists-in-a-vector

I didn't know if this was something that needed to be addressed.

Regards,
Joseph Wood

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> On 03 Nov 2015, at 23:04 , Joseph Wood <jwood000 at gmail.com> wrote:
> 
> I posted a question on stackoverflow dealing with determining elemental
> existence in a vector, and to my surprise, the method that was brutally
> slow for me on my PC was insanely fast on one of the member's platform
(he
> was running Linux).  You can view the details here.
> 
>
http://stackoverflow.com/questions/33453141/most-efficient-way-to-determine-if-element-exists-in-a-vector
> 
> I didn't know if this was something that needed to be addressed.
Well, since one platform was R 3.2.1 and the other was R-devel, it might just be
worth checking the NEWS.Rd file for items like

     \item \code{match(x, table)} is faster, sometimes by an order of
      magnitude, when \code{x} is of length one and \code{incomparables}
      is unchanged, thanks to Haverty's \PR{16491}.

-pd

> 
> Regards,
> Joseph Wood
> 
> 	[[alternative HTML version deleted]]
> 
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-- 
Peter Dalgaard, Professor,
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