TypeTraits.h

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#ifndef ZYPP_TYPETRAITS_H
#define ZYPP_TYPETRAITS_H
 
#include <type_traits>

// Helper types from https://en.cppreference.com/
namespace std
{
#if __cplusplus < 202002L
 
#endif // __cplusplus < 202002L
 
 
#if __cplusplus < 201703L
  template< class Base, class Derived >
  inline constexpr bool is_base_of_v = is_base_of<Base, Derived>::value;
 
  template< class T >
  inline constexpr bool is_integral_v = is_integral<T>::value;
 
  template< class T >
  inline constexpr bool is_pointer_v = is_pointer<T>::value;
#endif // __cplusplus < 201703L
 
 
#if __cplusplus < 201402L
  template< bool B, class T, class F >
  using conditional_t = typename conditional<B,T,F>::type;
 
  template< class T >
  using decay_t = typename decay<T>::type;
 
  template< bool B, class T = void >
  using enable_if_t = typename enable_if<B,T>::type;
 
  template< class T >
  using remove_reference_t = typename remove_reference<T>::type;
 
  template< class T >
  using result_of_t = typename result_of<T>::type;
 
  template< class T >
  using underlying_type_t = typename underlying_type<T>::type;
#endif // __cplusplus < 201402L
} // namespace std
#endif // ZYPP_TYPETRAITS_H