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b32b8144 | 1 | // Copyright Louis Dionne 2013-2017 |
7c673cae FG |
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/bool.hpp> | |
7 | #include <boost/hana/equal.hpp> | |
8 | #include <boost/hana/find_if.hpp> | |
9 | #include <boost/hana/functional/always.hpp> | |
10 | #include <boost/hana/integral_constant.hpp> | |
11 | #include <boost/hana/optional.hpp> | |
12 | #include <boost/hana/string.hpp> | |
13 | namespace hana = boost::hana; | |
14 | ||
15 | ||
16 | int main() { | |
17 | BOOST_HANA_CONSTANT_CHECK(hana::equal( | |
18 | hana::find_if(BOOST_HANA_STRING(""), hana::always(hana::true_c)), | |
19 | hana::nothing | |
20 | )); | |
21 | ||
22 | BOOST_HANA_CONSTANT_CHECK(hana::equal( | |
23 | hana::find_if(BOOST_HANA_STRING("abcd"), hana::equal.to(hana::char_c<'a'>)), | |
24 | hana::just(hana::char_c<'a'>) | |
25 | )); | |
26 | ||
27 | BOOST_HANA_CONSTANT_CHECK(hana::equal( | |
28 | hana::find_if(BOOST_HANA_STRING("abcd"), hana::equal.to(hana::char_c<'c'>)), | |
29 | hana::just(hana::char_c<'c'>) | |
30 | )); | |
31 | ||
32 | BOOST_HANA_CONSTANT_CHECK(hana::equal( | |
33 | hana::find_if(BOOST_HANA_STRING("abcd"), hana::equal.to(hana::char_c<'d'>)), | |
34 | hana::just(hana::char_c<'d'>) | |
35 | )); | |
36 | } |