extern

[awsdert]

is there a way to set the external reference as constant while leaving the file that has permission to modify it as non constant or will I just have to use slower function calls.

[JLBorges]

// file.h

extern const int& reference_to_const_int ;

// file.cc

#include "file.h"

namespace
{
    int modifiable_lvalue = 100 ;
}

const int& reference_to_const_int = modifiable_lvalue ;

[awsdert]

Thanx