From 96619cd132b5a9d11c6029c2e60f33c4bb19b7a0 Mon Sep 17 00:00:00 2001
From: greg <greg7mdp@gmail.com>
Date: Sat, 18 Jul 2020 22:14:59 -0400
Subject: [PATCH] issue #54

---
 parallel_hashmap/phmap_base.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/parallel_hashmap/phmap_base.h b/parallel_hashmap/phmap_base.h
index 2797682..0b6674a 100644
--- a/parallel_hashmap/phmap_base.h
+++ b/parallel_hashmap/phmap_base.h
@@ -329,7 +329,7 @@ template <typename T>
 using underlying_type_t = typename std::underlying_type<T>::type;
 
 template< class F, class... ArgTypes>
-#if __cplusplus >= 201703L
+#if __cplusplus >= 201703L || (defined(_MSVC_LANG) && _MSVC_LANG >= 201703L)
 using invoke_result_t = typename std::invoke_result_t<F, ArgTypes...>;
 #else
 using invoke_result_t = typename std::result_of<F(ArgTypes...)>::type;