>>>>> "LG" == Laurent Gautier <[EMAIL PROTECTED]>
>>>>> on Sat, 15 Mar 2008 16:24:26 +0800 writes:
LG> Dear list, The utility "R_has_slot" mentioned in the
LG> file NEWS ("Experimental R_has_slot() utility
LG> supplementing R_do_slot()") appears to be missing from a
LG> fresh checkout of the development branch.
LG> $ svn up At revision 44759. $ grep -i has_slot `find
LG> include -name '*.h'` $ grep -i _slot `find include -name
LG> '*.h'` include/Rdefines.h:#define GET_SLOT(x, what)
LG> R_do_slot(x, what) include/Rdefines.h:#define
LG> SET_SLOT(x, what, value) R_do_slot_assign(x, what,
LG> value) include/Rinternals.h:SEXP R_do_slot(SEXP obj,
LG> SEXP name); include/Rinternals.h:SEXP
LG> R_do_slot_assign(SEXP obj, SEXP name, SEXP value);
LG> ..or did I miss it ?
Yes. It's been so much experimental as not even making it into
a header ... arguably an oversight.
It's in src/main/attrib.c
int R_has_slot(SEXP obj, SEXP name)
It's not used anywhere currently in our own code,
but I had seen interesting use cases more than once.
Would you want to use it in your own code?
Regards, Martin
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