concepts.h

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#ifndef NNGN_UTILS_CONCEPTS_H
#define NNGN_UTILS_CONCEPTS_H
 
#include <concepts>
#include <type_traits>
#include <version>
 
namespace nngn {
 
template<typename T>
concept trivial = std::is_trivial_v<T>;
 
template<typename T>
concept standard_layout = std::is_standard_layout_v<T>;
 
template<typename D, typename B>
concept derived_from =
#ifdef _LIBCPP_VERSION
    std::is_base_of_v<B, D>
    && std::is_convertible_v<const volatile D*, const volatile B*>;
#else
    std::derived_from<D, B>;
#endif
 
template<typename From, typename To>
concept convertible_to_strict =
    std::convertible_to<From, To>
    && requires(From f) { { To{f} } -> std::same_as<To>; };
 
}
 
#endif