Pull the point examples out into test files - fixing a few bugs in the process.

[SVN r41996]

doc/src_code/point1.cpp

@@ -0,0 +1,46 @@
+
+// Copyright 2006-2007 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/detail/lightweight_test.hpp>
+
+//[point_example1
+    struct point {
+        int x;
+        int y;
+    };
+
+    bool operator==(point const& p1, point const& p2)
+    {
+        return p1.x == p2.x && p1.y == p2.y;
+    }
+
+    struct point_hash
+        : std::unary_function<point, std::size_t>
+    {
+        std::size_t operator()(point const& p) const
+        {
+            std::size_t seed = 0;
+            boost::hash_combine(seed, p.x);
+            boost::hash_combine(seed, p.y);
+            return seed;
+        }
+    };
+
+    boost::unordered_multiset<point, point_hash, std::equal_to<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();
+}