gistfile1.hpp

typedef void (A::*Setter)(int val);

void set(A* a, Setter s, int val) {
  (a->*s)(val);
}

class A {
  int mVal;
  void setVal(int val) { mVal = val; }
public:
  int getVal() { return mVal; }
  static A* create(int val) {
    A* a = new A;
    set(a, &A::setVal, val);
    return a;
  }
};

void test() {
  ASSERT(A::create(3)->getVal() == 3);
}