Began tutorial and examples.

[SVN r21584]

example/node_iterator1.hpp

@@ -0,0 +1,42 @@
+// Copyright David Abrahams 2004. Use, modification and distribution is
+// subject to 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)
+#ifndef NODE_ITERATOR1_DWA2004110_HPP
+# define NODE_ITERATOR1_DWA2004110_HPP
+
+# include "node.hpp"
+# include <boost/iterator/iterator_facade.hpp>
+
+class node_iterator
+  : public boost::iterator_facade<
+        node_iterator
+      , node_base
+      , boost::forward_traversal_tag
+    >
+{
+ public:
+	node_iterator()
+      : m_node(0)
+    {}
+
+	explicit node_iterator(node_base* p)
+      : m_node(p)
+	{}
+
+	friend class boost::iterator_core_access;
+
+ private:
+	void increment()
+    { m_node = m_node->next(); }
+    
+	bool equal(node_iterator const& other) const
+    { return this->m_node == other.m_node; }
+    
+	node_base& dereference() const
+    { return *m_node; }
+
+    node_base* m_node;
+};
+
+
+#endif // NODE_ITERATOR1_DWA2004110_HPP