Edit: /usr/include/boost/hana/replace.hpp (1797B)
/*!
@file
Defines `boost::hana::replace`.
@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_REPLACE_HPP
#define BOOST_HANA_REPLACE_HPP
#include
#include
#include
#include
#include
#include
BOOST_HANA_NAMESPACE_BEGIN
//! @cond
template
constexpr auto replace_t::operator()(Xs&& xs, OldVal&& oldval, NewVal&& newval) const {
using S = typename hana::tag_of::type;
using Replace = BOOST_HANA_DISPATCH_IF(replace_impl,
hana::Functor::value
);
#ifndef BOOST_HANA_CONFIG_DISABLE_CONCEPT_CHECKS
static_assert(hana::Functor::value,
"hana::replace(xs, oldval, newval) requires 'xs' to be a Functor");
#endif
return Replace::apply(static_cast(xs),
static_cast(oldval),
static_cast(newval));
}
//! @endcond
template
struct replace_impl> : default_ {
template
static constexpr decltype(auto)
apply(Xs&& xs, OldVal&& oldval, NewVal&& newval) {
return hana::replace_if(
static_cast(xs),
hana::equal.to(static_cast(oldval)),
static_cast(newval)
);
}
};
BOOST_HANA_NAMESPACE_END
#endif // !BOOST_HANA_REPLACE_HPP