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 | 28 | <h2><span class="refentrytitle">Function hash_value</span></h2> | 
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 | 29 | <p>boost::hash_value — </p> | 
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 | 30 | </div> | 
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 | 31 | <h2 xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv-title">Synopsis</h2> | 
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 | 32 | <div xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv"><pre class="synopsis"> | 
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 | 33 | <span class="bold"><strong>template</strong></span><<span class="bold"><strong>typename</strong></span> A, <span class="bold"><strong>typename</strong></span> B>  | 
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 | 34 |   <span class="type">std::size_t</span> hash_value(std::pair<A, B> <span class="bold"><strong>const</strong></span> & val);</pre></div> | 
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 | 35 | <div class="refsect1" lang="en"> | 
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 | 36 | <a name="id2705672"></a><h2>Description</h2> | 
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 | 37 | <p><b xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision"><span class="term">Effects</span></b>: | 
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 | 38 |  | 
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 | 39 |     <pre class="programlisting"> | 
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 | 40 | size_t seed = 0; | 
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 | 41 | <a href="hash_combine.html" title="Function template hash_combine">hash_combine</a>(seed, val.first); | 
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 | 42 | <a href="hash_combine.html" title="Function template hash_combine">hash_combine</a>(seed, val.second); | 
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 | 43 | return seed; | 
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 | 44 |         </pre><br><b xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision"><span class="term">Throws</span></b>: | 
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 | 45 |  | 
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 | 46 |      | 
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 | 47 |           Only throws if <code class="computeroutput"><a href="id2510242.html" title="Function hash_value">hash_value</a>(A)</code> | 
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 | 48 |           or <code class="computeroutput"><a href="id2510242.html" title="Function hash_value">hash_value</a>(B)</code> throws. | 
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 | 49 |         <br><b xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision"><span class="term">Notes</span></b>: | 
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 | 50 |  | 
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 | 51 |     This is an extension to TR1</p> | 
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 | 56 | <td align="right"><small>Copyright © 2005 Daniel James</small></td> | 
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