From d51f9b19fb7f0bbcfec4a437701a8cdbefeac8a5 Mon Sep 17 00:00:00 2001
From: qicosmos <qicosmos@163.com>
Date: Wed, 10 Apr 2019 13:54:52 +0800
Subject: [PATCH] update for c++11

---
 include/cplusplus_14.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/include/cplusplus_14.h b/include/cplusplus_14.h
index a72592a..68cc54b 100644
--- a/include/cplusplus_14.h
+++ b/include/cplusplus_14.h
@@ -3,6 +3,7 @@
 
 #include <type_traits>
 #include <memory>
+#include <tuple>
 
 #if __cplusplus == 201103L
 
@@ -75,6 +76,9 @@ using remove_const_t = typename remove_const<T>::type;
 template<typename T>
 using remove_reference_t = typename remove_reference<T>::type;
 
+template<typename T>
+using tuple_element_t = typename tuple_element<T>::type;
+
 template<typename T>
 using decay_t = typename decay<T>::type;