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- // Copyright 2018-2019 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_TEST_STD_OSTREAM_HPP
- #define BOOST_HISTOGRAM_TEST_STD_OSTREAM_HPP
- #include <boost/mp11/tuple.hpp>
- #include <ostream>
- #include <utility>
- #include <vector>
- namespace std {
- // never add to std, we only do it here to get ADL working :(
- template <typename T>
- ostream& operator<<(ostream& os, const vector<T>& v) {
- os << "[ ";
- for (const auto& x : v) os << x << " ";
- os << "]";
- return os;
- }
- template <class... Ts>
- ostream& operator<<(ostream& os, const std::tuple<Ts...>& t) {
- os << "[ ";
- ::boost::mp11::tuple_for_each(t, [&os](const auto& x) { os << x << " "; });
- os << "]";
- return os;
- }
- template <class T, class U>
- ostream& operator<<(ostream& os, const std::pair<T, U>& t) {
- os << "[ " << t.first << " " << t.second << " ]";
- return os;
- }
- } // namespace std
- #endif
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