From db24260dbe4d93638d50d8316e0fbf57e03395b4 Mon Sep 17 00:00:00 2001
From: Simon Brand <tartanllama@gmail.com>
Date: Wed, 11 Oct 2017 19:18:08 +0100
Subject: [PATCH] Lol MSVC

---
 optional.hpp | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/optional.hpp b/optional.hpp
index 493eb2e..3e6041d 100644
--- a/optional.hpp
+++ b/optional.hpp
@@ -232,6 +232,14 @@ struct is_adl_swap_noexcept
     : std::integral_constant<bool, noexcept(can_swap<T, U>(0))> {};
 }
 
+#ifdef _MSC_VER
+    // TODO make a version which works with MSVC
+    template <class T, class U = T>
+    sturct is_swappable : std::true_type{};
+
+    template <class T, class U = T>
+    struct is_nothrow_swappable : std::true_type{};
+#else
 template <class T, class U = T>
 struct is_swappable
     : std::integral_constant<
@@ -261,6 +269,8 @@ struct is_nothrow_swappable
                     detail::swap_adl_tests::is_adl_swap_noexcept<T,
                                                                  U>::value))> {
 };
+#endif
+
 }
 
 // [optional.nullopt], no-value state indicator