C/C++ macro/template blackmagic to generate unique name

Question

Macros are fine. Templates are fine. Pretty much whatever it works is fine.

The example is OpenGL; but the technique is C++ specific and relies on no knowledge of Op

Answer 1

I think it's now possible to do something like this:

struct GlTranslate
{
    operator()(double x,double y,double z, std::function f)
    {
        glPushMatrix(); glTranslatef(x, y, z);
        f();
        glPopMatrix();
    }
};

then in the code

GlTranslate(x, y, z,[&]()
{
// your code goes here
});

Obviously, C++11 is needed