From 6ae68fe3013c85cb53986d65ac0dd885af724559 Mon Sep 17 00:00:00 2001
From: Jason Rhinelander <jason@imaginary.ca>
Date: Tue, 13 Dec 2016 12:23:12 -0500
Subject: [PATCH] Add simple any_of/all_of implementation for C++17

---
 include/pybind11/common.h | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/include/pybind11/common.h b/include/pybind11/common.h
index 254fbadd..bfc5f133 100644
--- a/include/pybind11/common.h
+++ b/include/pybind11/common.h
@@ -385,7 +385,10 @@ template <class T> using negation = bool_constant<!T::value>;
 #endif
 
 /// Compile-time all/any/none of that check the ::value of all template types
-#if !defined(_MSC_VER)
+#ifdef PYBIND11_CPP17
+template <class... Ts> using all_of = bool_constant<(Ts::value && ...)>;
+template <class... Ts> using any_of = bool_constant<(Ts::value || ...)>;
+#elif !defined(_MSC_VER)
 template <bool...> struct bools {};
 template <class... Ts> using all_of = std::is_same<
     bools<Ts::value..., true>,