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- // 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_REPLACE_TYPE_HPP
- #define BOOST_HISTOGRAM_DETAIL_REPLACE_TYPE_HPP
- #include <boost/core/use_default.hpp>
- #include <string>
- #include <type_traits>
- namespace boost {
- namespace histogram {
- namespace detail {
- template <class T, class From, class To>
- using replace_type = std::conditional_t<std::is_same<T, From>::value, To, T>;
- template <class T, class Default>
- using replace_default = replace_type<T, boost::use_default, Default>;
- template <class T>
- using replace_cstring = replace_type<T, const char*, std::string>;
- } // namespace detail
- } // namespace histogram
- } // namespace boost
- #endif
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