Hack to get type-safe enum classes with implicit conversion to int.

enum-class-hack.cpp

#include <iostream>

#define ENUM_CLASS(Name, ...) \
    struct Name { \
        static int sCounter; \
        int mValue; \
        Name() : mValue(++Name::sCounter) {} \
        operator int() { return mValue; } \
        static Name __VA_ARGS__; \
    }; \
    int Name::sCounter = 0; \

ENUM_CLASS(Color, Red, Green);
Color Color::Red; // should be unnecessary with some macro crimes
Color Color::Green;

int main(int argc, char **argv)
{
    Color c = Color::Red;
    // c = 10; <-- compile error
    std::cout << c << std::endl; // prints 1
    return 0;
}