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- // 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)
- #include <boost/hana/assert.hpp>
- #include <boost/hana/equal.hpp>
- #include <boost/hana/optional.hpp>
- #include <boost/hana/transform.hpp>
- #include <boost/hana/tuple.hpp>
- #include <boost/hana/type.hpp>
- #include <sstream>
- #include <string>
- #include <type_traits>
- namespace hana = boost::hana;
- using namespace std::literals;
- auto to_string = [](auto x) {
- std::ostringstream ss;
- ss << x;
- return ss.str();
- };
- int main() {
- BOOST_HANA_RUNTIME_CHECK(
- hana::transform(hana::make_tuple(1, '2', "345", std::string{"67"}), to_string)
- ==
- hana::make_tuple("1", "2", "345", "67")
- );
- BOOST_HANA_CONSTANT_CHECK(hana::transform(hana::nothing, to_string) == hana::nothing);
- BOOST_HANA_RUNTIME_CHECK(hana::transform(hana::just(123), to_string) == hana::just("123"s));
- BOOST_HANA_CONSTANT_CHECK(
- hana::transform(hana::tuple_t<void, int(), char[10]>, hana::metafunction<std::add_pointer>)
- ==
- hana::tuple_t<void*, int(*)(), char(*)[10]>
- );
- }
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