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| <h2><span class="refentrytitle">Struct template hash</span></h2> |
| <p>boost::hash — A <a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2005/n1836.pdf" target="_top">TR1</a> compliant hash function object.</p> |
| </div> |
| <h2 xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv-title">Synopsis</h2> |
| <div xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv"><pre class="synopsis"><span class="comment">// In header: <<a class="link" href="../hash/reference.html#header.boost.functional.hash_hpp" title="Header <boost/functional/hash.hpp>">boost/functional/hash.hpp</a>> |
| |
| </span><span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> T<span class="special">></span> |
| <span class="keyword">struct</span> <a class="link" href="hash.html" title="Struct template hash">hash</a> <span class="special">:</span> <span class="keyword">public</span> std::unary_function<T, std::size_t> <span class="special">{</span> |
| <span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <a class="link" href="hash.html#id604992-bb"><span class="keyword">operator</span><span class="special">(</span><span class="special">)</span></a><span class="special">(</span><span class="identifier">T</span> <span class="keyword">const</span><span class="special">&</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span> |
| <span class="special">}</span><span class="special">;</span></pre></div> |
| <div class="refsect1"> |
| <a name="id1298718"></a><h2>Description</h2> |
| <pre class="literallayout"><span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <a name="id604992-bb"></a><span class="keyword">operator</span><span class="special">(</span><span class="special">)</span><span class="special">(</span><span class="identifier">T</span> <span class="keyword">const</span><span class="special">&</span> val<span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre> |
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| <td><p><span class="term">Returns:</span></p></td> |
| <td> |
| <p> |
| </p> |
| <pre class="programlisting"><a class="link" href="../hash/reference.html#boost.hash_value">hash_value</a><span class="special">(</span><span class="identifier">val</span><span class="special">)</span></pre> |
| <p> |
| </p> |
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| </tr> |
| <tr> |
| <td><p><span class="term">Notes:</span></p></td> |
| <td> |
| <p> |
| The call to <code class="computeroutput"><a class="link" href="../hash/reference.html#boost.hash_value">hash_value</a></code> |
| is unqualified, so that custom overloads can be |
| found via argument dependent lookup. |
| </p> |
| <p> |
| This is not defined when the macro <code class="computeroutput">BOOST_HASH_NO_EXTENSIONS</code> |
| is defined. The specializations are still defined, so only the specializations |
| required by TR1 are defined. |
| </p> |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term">Throws:</span></p></td> |
| <td><p> |
| Only throws if |
| <code class="computeroutput"><a class="link" href="../hash/reference.html#boost.hash_value">hash_value</a>(T)</code> throws. |
| </p></td> |
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| <td align="left"></td> |
| <td align="right"><div class="copyright-footer">Copyright © 2005-2008 Daniel |
| James<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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