From bd72fce0a7e5ec77a042d2701158f58f64563172 Mon Sep 17 00:00:00 2001
From: Rosen Penev <rosenp@gmail.com>
Date: Sat, 6 Jun 2020 10:56:46 -0700
Subject: [PATCH] Use std::string_view whenever possible

std::string_view is available with libcxx, even in C++11 mode. Use the proper macro to check it.
---
 lmdb-safe.hh | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/lmdb-safe.hh b/lmdb-safe.hh
index ff28466..c34b542 100644
--- a/lmdb-safe.hh
+++ b/lmdb-safe.hh
@@ -14,7 +14,9 @@
 #include <limits>
 
 // apple compiler somehow has string_view even in c++11!
-#if __cplusplus < 201703L && !defined(__APPLE__)
+#ifdef __cpp_lib_string_view
+using std::string_view;
+#else
 #include <boost/version.hpp>
 #if BOOST_VERSION > 105400
 #include <boost/utility/string_view.hpp>
@@ -23,8 +25,6 @@ using boost::string_view;
 #include <boost/utility/string_ref.hpp>
 using string_view = boost::string_ref;
 #endif
-#else // C++17
-using std::string_view;
 #endif