search for: nilvalue

Displaying 1 result from an estimated 1 matches for "nilvalue".

Did you mean: lvalue
2020 Sep 07
0
some questions about R internal SEXP types
Thanks, Gabriel. On Mon, 2020-09-07 at 14:38 -0700, Gabriel Becker wrote: > I cannot speak to initial intent, perhaps others can. I can say that > there is at least one place where the difference between R_NilValue > and NULL is very important as of right now. The current design of the > ALTREP framework contract expects ALTREP methods that return a SEXP > to return C NULL when they fail (or decline) to do the requested > computation and the non-altclass-specific machinery should be run as > a...