Hi Martin and Jiefei,
A quick note, I'll try to respond more completely later.
> It is a primitive but I don't understand how it manage to do that.
>
Primitives and Internals are allowed to be, but usually aren't, SPECIALSXPs
rather than BUILTINSXPs. SPECIALSXPs receive their arguments unevalua
Thank you for your reply Jiefei.
I think in theory your solution should work. I'll have to give them a try.
On Mon, 4 Nov 2019 23:41 Wang Jiefei, wrote:
> Hi Morgan,
>
> My solutions might not be the best one(I believe it's not), but it should
> work for your question.
>
> 1. Have you considere
Hi Morgan,
My solutions might not be the best one(I believe it's not), but it should
work for your question.
1. Have you considered Rf_duplicate function? If you want to change the
value of `a` and reset it later, you have to have a duplication somewhere
for resetting it. Instead of changing the
Hi All,
I have some questions regarding the R C API.
Let's assume I have a function which is defined as follows:
R file:
myfunc <- function(a, b, ...) .External(Cfun, a, b, ...)
C file:
SEXP Cfun(SEXP args) {
args = CDR(args);
SEXP a = CAR(args); args = CDR(args);
SEXP b = CAR(args); ar
