41 lines
884 B
C++
41 lines
884 B
C++
//
|
|
// cpp14/query_member.cpp
|
|
// ~~~~~~~~~~~~~~~~~~~~~~
|
|
//
|
|
// 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)
|
|
//
|
|
|
|
#include <boost/asio/query.hpp>
|
|
#include <cassert>
|
|
|
|
struct prop
|
|
{
|
|
template <typename> static constexpr bool is_applicable_property_v = true;
|
|
};
|
|
|
|
struct object
|
|
{
|
|
constexpr int query(prop) const { return 123; }
|
|
};
|
|
|
|
int main()
|
|
{
|
|
object o1 = {};
|
|
int result1 = boost::asio::query(o1, prop());
|
|
assert(result1 == 123);
|
|
(void)result1;
|
|
|
|
const object o2 = {};
|
|
int result2 = boost::asio::query(o2, prop());
|
|
assert(result2 == 123);
|
|
(void)result2;
|
|
|
|
constexpr object o3 = {};
|
|
constexpr int result3 = boost::asio::query(o3, prop());
|
|
assert(result3 == 123);
|
|
(void)result3;
|
|
}
|