/usr/include/boost/histogram/detail
Edit: /usr/include/boost/histogram/detail/relaxed_tuple_size.hpp (956B)
// Copyright 2019 Hans Dembinski
//
// 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 BOOST_HISTOGRAM_DETAIL_RELAXED_TUPLE_SIZE_HPP
#define BOOST_HISTOGRAM_DETAIL_RELAXED_TUPLE_SIZE_HPP
#include
namespace boost {
namespace histogram {
namespace detail {
using dynamic_size = std::integral_constant(-1)>;
// Returns static size of tuple or dynamic_size
template
constexpr dynamic_size relaxed_tuple_size(const T&) noexcept {
return {};
}
template
constexpr std::integral_constant relaxed_tuple_size(
const std::tuple&) noexcept {
return {};
}
template
using relaxed_tuple_size_t = decltype(relaxed_tuple_size(std::declval()));
} // namespace detail
} // namespace histogram
} // namespace boost
#endif