From f1210436b82f7887cdfcef492e40d9860074f99b Mon Sep 17 00:00:00 2001
From: Seth Hamilton <seth.alexander.hamilton@gmail.com>
Date: Thu, 1 Mar 2018 09:29:36 -0500
Subject: [PATCH] now with more define tests

---
 client_http.hpp | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/client_http.hpp b/client_http.hpp
index 4cec9a7..cc39eb5 100644
--- a/client_http.hpp
+++ b/client_http.hpp
@@ -30,14 +30,14 @@ namespace SimpleWeb {
 } // namespace SimpleWeb
 #endif
 
-#if defined(__has_include) && __has_include(<string_view>)
-#include <string_view>
-namespace SimpleWeb { using string_view = std::string_view; }
-#elif !defined(USE_STANDALONE_ASIO)
-#include <boost/utility/string_ref.hpp>
-namespace SimpleWeb { using string_view = boost::string_ref; }  
-#else
-namespace SimpleWeb { using string_view = const std::string &; }
+#if defined(__has_include) && __has_include(<string_view>) && (__cplusplus >> 201402L || (defined(_MSC_VER) && _MSC_VER >= 1910))
+#include <string_view>
+namespace SimpleWeb { using string_view = std::string_view; }
+#elif !defined(USE_STANDALONE_ASIO)
+#include <boost/utility/string_ref.hpp>
+namespace SimpleWeb { using string_view = boost::string_ref; }  
+#else
+namespace SimpleWeb { using string_view = const std::string &; }
 #endif
 
 namespace SimpleWeb {