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2 // cpp11/require_concept_member.cpp
3 // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
5 // Copyright (c) 2003-2020 Christopher M. Kohlhoff (chris at kohlhoff dot com)
7 // Distributed under the Boost Software License, Version 1.0. (See accompanying
8 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
11 #include <boost/asio/require_concept.hpp>
17 static constexpr bool is_requirable_concept
= true;
24 constexpr object
<N
> require_concept(prop
<N
>) const
33 template<int N
, int M
>
34 struct is_applicable_property
<object
<N
>, prop
<M
> >
36 static constexpr bool value
= true;
45 object
<2> o2
= boost::asio::require_concept(o1
, prop
<2>());
48 const object
<1> o3
= {};
49 object
<2> o4
= boost::asio::require_concept(o3
, prop
<2>());
52 constexpr object
<2> o5
= boost::asio::require_concept(object
<1>(), prop
<2>());