Adds asio library and Storage Module

lib/asio-1.18.0/include/asio/is_applicable_property.hpp

@@ -0,0 +1,61 @@
+//
+// is_applicable_property.hpp
+// ~~~~~~~~~~~~~~~~~~~~~~~~~~
+//
+// Copyright (c) 2003-2020 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