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Apparently, if you use a boost, you can use BOOOST_STRONG_TYPEDEF.BOOST_STRONG_TYPEDEF(int, ONE)
If you don't use the boost, you can help with the code: namespace detail {
template <typename T> class empty_base {};
}
template <class T, class U, class B = ::detail::empty_base<T> >
struct less_than_comparable2 : B
{
friend bool operator<=(const T& x, const U& y) { return !(x > y); }
friend bool operator>=(const T& x, const U& y) { return !(x < y); }
friend bool operator>(const U& x, const T& y) { return y < x; }
friend bool operator<(const U& x, const T& y) { return y > x; }
friend bool operator<=(const U& x, const T& y) { return !(y < x); }
friend bool operator>=(const U& x, const T& y) { return !(y > x); }
};
template <class T, class B = ::detail::empty_base<T> >
struct less_than_comparable1 : B
{
friend bool operator>(const T& x, const T& y) { return y < x; }
friend bool operator<=(const T& x, const T& y) { return !(y < x); }
friend bool operator>=(const T& x, const T& y) { return !(x < y); }
};
template <class T, class U, class B = ::detail::empty_base<T> >
struct equality_comparable2 : B
{
friend bool operator==(const U& y, const T& x) { return x == y; }
friend bool operator!=(const U& y, const T& x) { return !(x == y); }
friend bool operator!=(const T& y, const U& x) { return !(y == x); }
};
template <class T, class B = ::detail::empty_base<T> >
struct equality_comparable1 : B
{
friend bool operator!=(const T& x, const T& y) { return !(x == y); }
};
template <class T, class U, class B = ::detail::empty_base<T> >
struct totally_ordered2
: less_than_comparable2<T, U
, equality_comparable2<T, U, B
> > {};
template <class T, class B = ::detail::empty_base<T> >
struct totally_ordered1
: less_than_comparable1<T
, equality_comparable1<T, B
> > {};
#define SAFE_TYPEDEF(T, D)
struct D
: totally_ordered1< D
, totally_ordered2< D, T
> >
{
T t;
explicit D(const T& t_) : t(t_) {};
explicit D(T&& t_) : t(std::move(t_)) {}; \
D() = default;
D(const D & t_) = default;
D(D&&) = default;
D & operator=(const D & rhs) = default;
D & operator=(D&&) = default;
operator T & () { return t; }
bool operator==(const D & rhs) const { return t == rhs.t; }
bool operator<(const D & rhs) const { return t < rhs.t; }
};
SAFE_TYPEDEF (int, ONE);
But then you'll need to update the head restraints of Vulkan API.Similar question: https://stackoverflow.com/questions/34287842/c-strongly-typed-using-and-typedef
