/usr/include/boost/poly_collection/detail
Edit: /usr/include/boost/poly_collection/detail/is_final.hpp (1419B)
/* Copyright 2016-2017 Joaquin M Lopez Munoz.
* 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)
*
* See http://www.boost.org/libs/poly_collection for library home page.
*/
#ifndef BOOST_POLY_COLLECTION_DETAIL_IS_FINAL_HPP
#define BOOST_POLY_COLLECTION_DETAIL_IS_FINAL_HPP
#if defined(_MSC_VER)
#pragma once
#endif
#include
#include
/* technique explained at
* http://bannalia.blogspot.com/2016/09/compile-time-checking-existence-of.html
*/
namespace boost{
namespace poly_collection{
namespace detail{
namespace is_final_fallback{
template using is_final=boost::is_final;
struct hook{};
}}}}
namespace std{
template<>
struct is_void< ::boost::poly_collection::detail::is_final_fallback::hook>:
std::false_type
{
template
static constexpr bool is_final_f()
{
using namespace ::boost::poly_collection::detail::is_final_fallback;
return is_final::value;
}
};
} /* namespace std */
namespace boost{
namespace poly_collection{
namespace detail{
template
struct is_final:std::integral_constant<
bool,
std::is_void::template is_final_f()
>{};
} /* namespace poly_collection::detail */
} /* namespace poly_collection */
} /* namespace boost */
#endif