From 1409114c9692c87b107011124be9568ecb144828 Mon Sep 17 00:00:00 2001
From: ToruNiina <niina.toru.68u@gmail.com>
Date: Sat, 28 Sep 2019 10:58:02 +0900
Subject: [PATCH] refactor: add utility meta-func for internal use

---
 toml/traits.hpp | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/toml/traits.hpp b/toml/traits.hpp
index c221ed4..c0c5ee9 100644
--- a/toml/traits.hpp
+++ b/toml/traits.hpp
@@ -240,6 +240,19 @@ disjunction<
         >
     >{};
 
+// ---------------------------------------------------------------------------
+// C++20 remove_cvref_t
+
+template<typename T>
+struct remove_cvref
+{
+    using type = typename std::remove_cv<
+        typename std::remove_reference<T>::type>::type;
+};
+
+template<typename T>
+using remove_cvref_t = typename remove_cvref<T>::type;
+
 }// detail
 }//toml
 #endif // TOML_TRAITS