]>
Commit | Line | Data |
---|---|---|
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/equal.hpp> | |
7 | #include <boost/hana/integral_constant.hpp> | |
8 | #include <boost/hana/less.hpp> | |
9 | #include <boost/hana/pair.hpp> | |
10 | #include <boost/hana/span.hpp> | |
11 | #include <boost/hana/tuple.hpp> | |
12 | namespace hana = boost::hana; | |
13 | ||
14 | ||
15 | constexpr auto xs = hana::make_tuple(hana::int_c<1>, hana::int_c<2>, hana::int_c<3>, hana::int_c<4>); | |
16 | ||
17 | BOOST_HANA_CONSTANT_CHECK( | |
18 | hana::span(xs, hana::less.than(hana::int_c<3>)) | |
19 | == | |
20 | hana::make_pair(hana::make_tuple(hana::int_c<1>, hana::int_c<2>), | |
21 | hana::make_tuple(hana::int_c<3>, hana::int_c<4>)) | |
22 | ); | |
23 | ||
24 | BOOST_HANA_CONSTANT_CHECK( | |
25 | hana::span(xs, hana::less.than(hana::int_c<0>)) | |
26 | == | |
27 | hana::make_pair(hana::make_tuple(), xs) | |
28 | ); | |
29 | ||
30 | BOOST_HANA_CONSTANT_CHECK( | |
31 | hana::span(xs, hana::less.than(hana::int_c<5>)) | |
32 | == | |
33 | hana::make_pair(xs, hana::make_tuple()) | |
34 | ); | |
35 | ||
36 | // span.by is syntactic sugar | |
37 | BOOST_HANA_CONSTANT_CHECK( | |
38 | hana::span.by(hana::less.than(hana::int_c<3>), xs) | |
39 | == | |
40 | hana::make_pair(hana::make_tuple(hana::int_c<1>, hana::int_c<2>), | |
41 | hana::make_tuple(hana::int_c<3>, hana::int_c<4>)) | |
42 | ); | |
43 | ||
44 | int main() { } |