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1 | // Copyright Louis Dionne 2013-2016 |
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/drop_front_exactly.hpp> | |
7 | #include <boost/hana/equal.hpp> | |
8 | #include <boost/hana/integral_constant.hpp> | |
9 | #include <boost/hana/string.hpp> | |
10 | namespace hana = boost::hana; | |
11 | ||
12 | ||
13 | int main() { | |
14 | BOOST_HANA_CONSTANT_CHECK(hana::equal( | |
15 | hana::drop_front_exactly(BOOST_HANA_STRING("a")), | |
16 | BOOST_HANA_STRING("") | |
17 | )); | |
18 | ||
19 | BOOST_HANA_CONSTANT_CHECK(hana::equal( | |
20 | hana::drop_front_exactly(BOOST_HANA_STRING("ab")), | |
21 | BOOST_HANA_STRING("b") | |
22 | )); | |
23 | ||
24 | BOOST_HANA_CONSTANT_CHECK(hana::equal( | |
25 | hana::drop_front_exactly(BOOST_HANA_STRING("abc")), | |
26 | BOOST_HANA_STRING("bc") | |
27 | )); | |
28 | ||
29 | BOOST_HANA_CONSTANT_CHECK(hana::equal( | |
30 | hana::drop_front_exactly(BOOST_HANA_STRING("abcdefghijk")), | |
31 | BOOST_HANA_STRING("bcdefghijk") | |
32 | )); | |
33 | ||
34 | ||
35 | BOOST_HANA_CONSTANT_CHECK(hana::equal( | |
36 | hana::drop_front_exactly(BOOST_HANA_STRING("abc"), hana::size_c<2>), | |
37 | BOOST_HANA_STRING("c") | |
38 | )); | |
39 | ||
40 | BOOST_HANA_CONSTANT_CHECK(hana::equal( | |
41 | hana::drop_front_exactly(BOOST_HANA_STRING("abcdefghijk"), hana::size_c<3>), | |
42 | BOOST_HANA_STRING("defghijk") | |
43 | )); | |
44 | } |