/usr/include/boost/hana/fuse.hpp is in libboost1.65-dev 1.65.1+dfsg-0ubuntu5.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 | /*!
@file
Defines `boost::hana::fuse`.
@copyright Louis Dionne 2013-2017
Distributed under the Boost Software License, Version 1.0.
(See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
*/
#ifndef BOOST_HANA_FUSE_HPP
#define BOOST_HANA_FUSE_HPP
#include <boost/hana/fwd/fuse.hpp>
#include <boost/hana/config.hpp>
#include <boost/hana/detail/decay.hpp>
#include <boost/hana/unpack.hpp>
BOOST_HANA_NAMESPACE_BEGIN
namespace detail {
template <typename F>
struct fused {
F f;
template <typename Xs>
constexpr decltype(auto) operator()(Xs&& xs) const&
{ return hana::unpack(static_cast<Xs&&>(xs), f); }
template <typename Xs>
constexpr decltype(auto) operator()(Xs&& xs) &
{ return hana::unpack(static_cast<Xs&&>(xs), f); }
template <typename Xs>
constexpr decltype(auto) operator()(Xs&& xs) &&
{ return hana::unpack(static_cast<Xs&&>(xs), static_cast<F&&>(f)); }
};
}
//! @cond
template <typename F>
constexpr auto fuse_t::operator()(F&& f) const {
return detail::fused<typename detail::decay<F>::type>{static_cast<F&&>(f)};
}
//! @endcond
BOOST_HANA_NAMESPACE_END
#endif // !BOOST_HANA_FUSE_HPP
|