[Rd] must .Call C functions return SEXP?
atp at piskorski.com
Thu Oct 28 22:07:40 CEST 2010
On Thu, Oct 28, 2010 at 10:59:26AM -0400, Simon Urbanek wrote:
> Because R assumes that you don't mess with the arguments, it also
> optimizes b to point to the same object as a which you then modify.
> I hope it sheds some light on it.
Indeed! Thank you Simon, that was a thorough and illuminating answer.
(Now I have better understanding of how the machine works, and what
the dangerous sharp bits are. :)
Andrew Piskorski <atp at piskorski.com>
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