RInside InternalFunction在类上，如何从R调用函数

Question

I need to call R from C++ and I am using the excellent RInside / Rccp packages. I am not an R specialist, this might explain my question and sorry if it's too obvious.

I made an object and a wrapper class, something similar to the Rinside examples/standard/rinside_interactive0.cpp. In this example it shows how to attach a method to an R attribute class.

wr.attr("class") = "Solver";    
R["Solver"] = wr;
... more code
R["names.Solver"] = Rcpp::InternalFunction(& Names); <-- Hot to call this one from R

Actually I never see a call from R to this function, and what would be the R syntax ? I though, using R.parseEval in such way:

R.parseEval("Solver.names()");

But this does not work and gives the error:

Error in Solver.names() : could not find function "Solver.names"
terminate called after throwing an instance of 'std::runtime_error'
what():  Error evaluating: Solver.names()

My question is then how to call the Solver.names function in R (that is handled in the C++ code) ? Note that the assign / retrieval function are working fine, maybe because they are somehow "primitive" ?

Thanks a lot Franck

Answer 1

I found out, I post in case someone is searching:

R.parseEval("names.Solver(Solver)");

Not very elegant to me .., it uses functionName.class(Object) ..

F.