From b6300193006fda90fc6dea4f52320a61c8cfe0b7 Mon Sep 17 00:00:00 2001
From: Joe2018 <joe_2018@Outlook.com>
Date: Mon, 15 Jul 2019 12:08:23 +0800
Subject: removed constexpr to support older VC compilers.

---
 Rx/v2/src/rxcpp/operators/rx-ref_count.hpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/Rx/v2/src/rxcpp/operators/rx-ref_count.hpp b/Rx/v2/src/rxcpp/operators/rx-ref_count.hpp
index b68315d..1ce9a40 100644
--- a/Rx/v2/src/rxcpp/operators/rx-ref_count.hpp
+++ b/Rx/v2/src/rxcpp/operators/rx-ref_count.hpp
@@ -90,7 +90,8 @@ struct ref_count : public operator_base<T>
     // ref_count() == false
     // ref_count(other) == true
     using has_observable_t = rxu::negation<std::is_same<void, Observable>>;
-    static constexpr bool has_observable_v = has_observable_t::value;
+    // removed constexpr to support older VC compilers
+    static /*constexpr */ const bool has_observable_v = has_observable_t::value;
 
     struct ref_count_state : public std::enable_shared_from_this<ref_count_state>,
                              public ref_count_state_base<ConnectableObservable, Observable>
-- 
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