/usr/include/boost/histogram/detail
Edit: /usr/include/boost/histogram/detail/tuple_slice.hpp (1019B)
// Copyright 2015-2019 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_TUPLE_SLICE_HPP
#define BOOST_HISTOGRAM_DETAIL_TUPLE_SLICE_HPP
#include
#include
#include
namespace boost {
namespace histogram {
namespace detail {
template
decltype(auto) tuple_slice_impl(T&& t, mp11::index_sequence) {
return std::forward_as_tuple(std::get<(I + K)>(std::forward(t))...);
}
template
decltype(auto) tuple_slice(Tuple&& t) {
constexpr auto S = std::tuple_size>::value;
static_assert(I + N <= S, "I, N must be a valid subset");
return tuple_slice_impl(std::forward(t), mp11::make_index_sequence{});
}
} // namespace detail
} // namespace histogram
} // namespace boost
#endif