1 // Copyright Louis Dionne 2013-2017
2 // Distributed under the Boost Software License, Version 1.0.
3 // (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
4
5 #include <boost/hana/assert.hpp>
6 #include <boost/hana/equal.hpp>
7 #include <boost/hana/optional.hpp>
8 #include <boost/hana/transform.hpp>
9 #include <boost/hana/tuple.hpp>
10 #include <boost/hana/type.hpp>
11
12 #include <sstream>
13 #include <string>
14 #include <type_traits>
15 namespace hana = boost::hana;
16 using namespace std::literals;
17
18
__anonb965dbfb0102(auto x) 19 auto to_string = [](auto x) {
20 std::ostringstream ss;
21 ss << x;
22 return ss.str();
23 };
24
main()25 int main() {
26 BOOST_HANA_RUNTIME_CHECK(
27 hana::transform(hana::make_tuple(1, '2', "345", std::string{"67"}), to_string)
28 ==
29 hana::make_tuple("1", "2", "345", "67")
30 );
31
32 BOOST_HANA_CONSTANT_CHECK(hana::transform(hana::nothing, to_string) == hana::nothing);
33 BOOST_HANA_RUNTIME_CHECK(hana::transform(hana::just(123), to_string) == hana::just("123"s));
34
35 BOOST_HANA_CONSTANT_CHECK(
36 hana::transform(hana::tuple_t<void, int(), char[10]>, hana::metafunction<std::add_pointer>)
37 ==
38 hana::tuple_t<void*, int(*)(), char(*)[10]>
39 );
40 }
41