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// Copyright 2006-2009 Daniel James.
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
#include <boost/unordered_set.hpp>
#include <boost/functional/hash.hpp>
#include <boost/core/lightweight_test.hpp>
//[point_example2
struct point {
int x;
int y;
};
bool operator==(point const& p1, point const& p2)
{
return p1.x == p2.x && p1.y == p2.y;
}
std::size_t hash_value(point const& p) {
std::size_t seed = 0;
boost::hash_combine(seed, p.x);
boost::hash_combine(seed, p.y);
return seed;
}
// Now the default function objects work.
boost::unordered_multiset<point> points;
//]
int main() {
point x[] = {{1,2}, {3,4}, {1,5}, {1,2}};
for(int i = 0; i < sizeof(x) / sizeof(point); ++i)
points.insert(x[i]);
BOOST_TEST(points.count(x[0]) == 2);
BOOST_TEST(points.count(x[1]) == 1);
point y = {10, 2};
BOOST_TEST(points.count(y) == 0);
return boost::report_errors();
}
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