hana/example/is_disjoint.cpp
2017-01-07 14:14:18 -08:00

46 lines
1.5 KiB
C++

// Copyright Louis Dionne 2013-2017
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
#include <boost/hana/assert.hpp>
#include <boost/hana/is_disjoint.hpp>
#include <boost/hana/map.hpp>
#include <boost/hana/not.hpp>
#include <boost/hana/set.hpp>
#include <boost/hana/tuple.hpp>
#include <boost/hana/type.hpp>
#include <string>
namespace hana = boost::hana;
using namespace std::literals;
int main() {
// Tuples
auto xs = hana::make_tuple(hana::int_c<1>, "alfa"s, hana::type_c<int>);
auto ys = hana::make_tuple(hana::type_c<void>, hana::int_c<3>, "bravo"s);
BOOST_HANA_RUNTIME_CHECK(hana::is_disjoint(xs, ys));
// Sets
auto s1 = hana::make_set(hana::int_c<1>, hana::type_c<void>, hana::int_c<2>);
auto s2 = hana::make_set(hana::type_c<char>, hana::type_c<int>, hana::int_c<1>);
BOOST_HANA_CONSTANT_CHECK(!hana::is_disjoint(s1, s2));
// Maps
auto vowels = hana::make_map(
hana::make_pair(hana::char_c<'a'>, "alfa"s),
hana::make_pair(hana::char_c<'e'>, "echo"s),
hana::make_pair(hana::char_c<'i'>, "india"s)
// ...
);
auto consonants = hana::make_map(
hana::make_pair(hana::char_c<'b'>, "bravo"s),
hana::make_pair(hana::char_c<'c'>, "charlie"s),
hana::make_pair(hana::char_c<'f'>, "foxtrot"s)
// ...
);
BOOST_HANA_CONSTANT_CHECK(hana::is_disjoint(vowels, consonants));
}