diff --git a/type.hpp b/type.hpp
index eec8028..7a8d32d 100644
--- a/type.hpp
+++ b/type.hpp
@@ -63,6 +63,10 @@ template <typename T> struct is_reference<T &> : true_type {};
 template <typename T> struct is_reference<T &&> : true_type {};
 template <typename T> inline constexpr bool is_reference_v = is_reference<T>::value;
 
+template <typename T> struct is_lvalue_reference : false_type {};
+template <typename T> struct is_lvalue_reference<T &> : true_type {};
+template <typename T> inline constexpr bool is_lvalue_reference_v = is_lvalue_reference<T>::value;
+
 template <typename T> struct is_function : integral_constant<bool, !is_const_v<const T> && !is_reference_v<T>> {};
 template <typename T> inline constexpr bool is_function_v = is_function<T>::value;