How to template'ize variable NAMES, not types?

Question

my question is about how to template\'ize the name of a class member that should be used.

Maybe a simplified & pseudo example:

Answer 1

I would use lambdas to solve this problem. Something like this:

#include      // vector
#include   // for_each
#include  // function

struct MyClass {
   void func1() const { std::cout << __FUNCTION__ << std::endl; }
   void func2() const { std::cout << __FUNCTION__ << std::endl; }
};

void doSomething(std::vector all, std::function f)
{
   std::for_each(all.begin(), all.end(), f);
}

int main()
{
   std::vector all;
   all.push_back(MyClass());

    // apply various methods to each MyClass:
   doSomething(all, [](MyClass& m) { m.func1(); });
   doSomething(all, [](MyClass& m) { m.func2(); });
}

Of course in this case the function doSomething is unnecessary. I could just as simply call for_each directly on all.