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+//
+// is_applicable_property.hpp
+// ~~~~~~~~~~~~~~~~~~~~~~~~~~
+//
+// Copyright (c) 2003-2021 Christopher M. Kohlhoff (chris at kohlhoff dot com)
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+//
+
+#ifndef ASIO_IS_APPLICABLE_PROPERTY_HPP
+#define ASIO_IS_APPLICABLE_PROPERTY_HPP
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1200)
+# pragma once
+#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
+
+#include "asio/detail/config.hpp"
+#include "asio/detail/type_traits.hpp"
+
+namespace asio {
+namespace detail {
+
+template <typename T, typename Property, typename = void>
+struct is_applicable_property_trait : false_type
+{
+};
+
+#if defined(ASIO_HAS_VARIABLE_TEMPLATES)
+
+template <typename T, typename Property>
+struct is_applicable_property_trait<T, Property,
+ typename void_type<
+ typename enable_if<
+ !!Property::template is_applicable_property_v<T>
+ >::type
+ >::type> : true_type
+{
+};
+
+#endif // defined(ASIO_HAS_VARIABLE_TEMPLATES)
+
+} // namespace detail
+
+template <typename T, typename Property, typename = void>
+struct is_applicable_property :
+ detail::is_applicable_property_trait<T, Property>
+{
+};
+
+#if defined(ASIO_HAS_VARIABLE_TEMPLATES)
+
+template <typename T, typename Property>
+ASIO_CONSTEXPR const bool is_applicable_property_v
+ = is_applicable_property<T, Property>::value;
+
+#endif // defined(ASIO_HAS_VARIABLE_TEMPLATES)
+
+} // namespace asio
+
+#endif // ASIO_IS_APPLICABLE_PROPERTY_HPP