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/drop_front_exactly.hpp>
7#include <boost/hana/equal.hpp>
8#include <boost/hana/integral_constant.hpp>
9#include <boost/hana/string.hpp>
10namespace hana = boost::hana;
11
12
13int 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}
45

source code of boost/libs/hana/test/string/drop_front_exactly.cpp