From 27bd83047dc6d5d0bf137db82f372fcd97656a31 Mon Sep 17 00:00:00 2001
From: Determinant <ted.sybil@gmail.com>
Date: Fri, 2 Feb 2018 19:16:37 -0500
Subject: use a separate type for None

---
 promise.hpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/promise.hpp b/promise.hpp
index 25fbd3b..3d38438 100644
--- a/promise.hpp
+++ b/promise.hpp
@@ -56,9 +56,9 @@ namespace promise {
     using bad_any_cast = boost::bad_any_cast;
 #endif
 
-    using None = std::nullptr_t;
+    struct None {};
     using values_t = std::vector<pm_any_t>;
-    const auto none = nullptr;
+    const auto none = None();
     const auto do_nothing = [](){};
 
     /* match lambdas */
-- 
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