In the "Writing R Extensions" manual appears this example, to get access to C++
function using the R commands:
R> dyn.load(paste("X", .Platform$dynlib.ext, sep = ""))
constructor Y
R> .C("X_main")
constructor X
destructor X
list()
That gives me access to the function "X_main", but how to get access to methods
and properties like X.Z() and X.f, defined in the C++ files:
// X.hh
class X
{
public:
int f;
X ();
~X ();
int Z(int a, int b);
};
class Y
{
public: Y ();
~Y ();
};
// X.cc
#include <iostream>
#include "X.hh"
static Y y;
X::X() { std::cout << "constructor X" << std::endl; }
X::~X() { std::cout << "destructor X" << std::endl; }
Y::Y() { std::cout << "constructor Y" << std::endl; }
Y::~Y() { std::cout << "destructor Y" << std::endl; }
X::Z(int a, int b) {return a+b;}
// X_main.cc:
#include "X.hh"
extern "C"
{
void X_main ()
{
X x;
}
} // extern "C"
Best regards
Dr. Adrian Martínez Vargas
Revista Minería y Geología (Editor Principal)
ISMM, Las Coloradas, s/n
Moa, Holguín,
Cuba
CP. 83329
http://www.ismm.edu.cu/revistamg/index.htm
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