Yes , maybe that is very close to my needs , sorry for my pool english
expression. But, the following code can't work:
double meanC(NumericVector x) {
Function mean=Environment("package::base")["mean"];
return mean(x);
}
with the error "can't convert SEXP to double"
How can i fix it ? Tks.
At 2014-08-05 04:30:32, "Romain Francois" <rom...@r-enthusiasts.com> wrote:
Not sure what you mean by hide the R function. You can extract a function by
its name on the C++ side :
Function bazinga("mean") ;
or extract it from a particular environment, e.g.
Environment("package:base")["mean"]
or
Environment base("package:base") ;
Function foo = base["mean"]
Romain
Le 5 août 2014 à 09:26, super <rcppm...@163.com> a écrit :
Hello Rcppusers,
I want to call a r function in Cpp code, e.g.
int meanC( NumericVector x) {
return mean(x,_["na.rm"]=TRUE);
}
Here function mean is a r function not rewrittened Rcpp version's mean. I do
know one way to do this:
int meanC( Function f,NumericVector x) {
return f(x,_["na.rm"]=TRUE);
}
Then meanC(mean,1:3)
but can i hidden the true r function called ? Is r functions packed into some
namespace?
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