// -*-mode:c++;indent-tabs-mode:nil;c-basic-offset:4;tab-width:8;coding:utf-8-*- // vi: set et ft=cpp ts=4 sts=4 sw=4 fenc=utf-8 :vi #ifndef CTL_IS_REFERENCE_H_ #define CTL_IS_REFERENCE_H_ namespace ctl { // Primary template template<class T> struct is_reference { static constexpr bool value = false; }; // Specialization for lvalue reference template<class T> struct is_reference<T&> { static constexpr bool value = true; }; // Specialization for rvalue reference template<class T> struct is_reference<T&&> { static constexpr bool value = true; }; // Helper variable template (C++14 and later) template<class T> inline constexpr bool is_reference_v = is_reference<T>::value; } // namespace ctl #endif // CTL_IS_REFERENCE_H_