gistfile1.txt

#include <stdio.h>

#define LAM(type,def,ret)  [] () -> type { \
  static type bar = def; \
  return ret + bar; }\

class A {
public:
   constexpr static const auto method = LAM(const int,2,12);
   int x;
};

int main() {
  A a;
  a.x = 1337;
  //printf("Uncomment me %d\n",a.method());
  return a.x;
}