1// Copyright Louis Dionne 2013-2022
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/insert.hpp>
7#include <boost/hana/map.hpp>
8#include <boost/hana/pair.hpp>
9#include <boost/hana/type.hpp>
10
11#include <string>
12namespace hana = boost::hana;
13using namespace std::literals;
14
15
16int main() {
17 auto m = hana::make_map(
18 hana::make_pair(hana::type_c<int>, "abcd"s),
19 hana::make_pair(hana::type_c<void>, 1234)
20 );
21
22 BOOST_HANA_RUNTIME_CHECK(
23 hana::insert(m, hana::make_pair(hana::type_c<float>, 'x')) ==
24 hana::make_map(
25 hana::make_pair(hana::type_c<int>, "abcd"s),
26 hana::make_pair(hana::type_c<void>, 1234),
27 hana::make_pair(hana::type_c<float>, 'x')
28 )
29 );
30
31 BOOST_HANA_RUNTIME_CHECK(hana::insert(m, hana::make_pair(hana::type_c<void>, 'x')) == m);
32}
33

source code of boost/libs/hana/example/map/insert.cpp