From 5304c5704885fb974c19da3a6ad05b03a5e3a4dc Mon Sep 17 00:00:00 2001
From: bolero-MURAKAMI <bolero.murakami@gmail.com>
Date: Mon, 22 Sep 2014 13:30:09 +0900
Subject: [PATCH] fix default_construct

---
 sprout/tuple/default_construct.hpp | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/sprout/tuple/default_construct.hpp b/sprout/tuple/default_construct.hpp
index 67df5c7c..4107a35c 100644
--- a/sprout/tuple/default_construct.hpp
+++ b/sprout/tuple/default_construct.hpp
@@ -16,7 +16,13 @@ namespace sprout {
 		// default_construct_t
 		// default_construct
 		//
-		struct default_construct_t {};
+		struct default_construct_t {
+		public:
+			template<typename T>
+			operator T() const {
+				return T();
+			}
+		};
 		SPROUT_STATIC_CONSTEXPR sprout::tuples::default_construct_t default_construct = {};
 	}	// namespace tuples