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<a name="conversion._polymorphic_downcast__example"></a><a class="link" href="_polymorphic_downcast__example.html" title="polymorphic_downcast example"><code class="computeroutput">polymorphic_downcast</code>
    example</a>
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<pre class="programlisting">#include &lt;boost/polymorphic_cast.hpp&gt;
...
class Fruit { public: virtual ~Fruit(){}; ... };
class Banana : public Fruit { ... };
...
void f( Fruit * fruit ) {
  // ... logic which leads us to believe it is a Banana
  Banana * banana = boost::polymorphic_downcast&lt;Banana*&gt;(fruit);
  ...
}
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<td align="right"><div class="copyright-footer">Copyright &#169; 2001 Beman Dawes<p>
        Distributed under the Boost Software License, Version 1.0. (See accompanying
        file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
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