Most packages that use the R_MakeExternalPtr function use
Rf_install("pkgSpecificString") for its 'tag' argument (if they don't use
R_NilValue). A few use Rf_mkChar("pkgSpecificString").
Is there any reason to prefer one over the other?
Bill Dunlap
TIBCO Software
wdunlap tibco.com
R_MakeExternalPtr 'tag' argument
2 messages · William Dunlap, Simon Urbanek
On Nov 13, 2015, at 3:58 PM, William Dunlap <wdunlap at tibco.com> wrote:
Most packages that use the R_MakeExternalPtr function use
Rf_install("pkgSpecificString") for its 'tag' argument (if they don't use
R_NilValue). A few use Rf_mkChar("pkgSpecificString").
Is there any reason to prefer one over the other?
I think Luke is the definite authority, but IMHO using CHARSXP is illegal since you can only store CHARSXP in STRSXP. R-exts allows "ordinary R objects" so presumably mkString() would be legal. Cheers, Simon