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| author | Anas Nashif <anas.nashif@intel.com> | 2012-10-30 12:57:26 -0700 |
|---|---|---|
| committer | Anas Nashif <anas.nashif@intel.com> | 2012-10-30 12:57:26 -0700 |
| commit | 1a78a62555be32868418fe52f8e330c9d0f95d5a (patch) | |
| tree | d3765a80e7d3b9640ec2e930743630cd6b9fce2b /doc/html/hash/reference.html | |
| download | boost-1a78a62555be32868418fe52f8e330c9d0f95d5a.tar.gz boost-1a78a62555be32868418fe52f8e330c9d0f95d5a.tar.bz2 boost-1a78a62555be32868418fe52f8e330c9d0f95d5a.zip | |
Imported Upstream version 1.49.0upstream/1.49.0
Diffstat (limited to 'doc/html/hash/reference.html')
| -rwxr-xr-x | doc/html/hash/reference.html | 386 |
1 files changed, 386 insertions, 0 deletions
diff --git a/doc/html/hash/reference.html b/doc/html/hash/reference.html new file mode 100755 index 0000000000..dbe2bd55d3 --- /dev/null +++ b/doc/html/hash/reference.html @@ -0,0 +1,386 @@ +<html> +<head> +<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII"> +<title>Reference</title> +<link rel="stylesheet" href="../../../doc/src/boostbook.css" type="text/css"> +<meta name="generator" content="DocBook XSL Stylesheets V1.76.1"> +<link rel="home" href="../index.html" title="The Boost C++ Libraries BoostBook Documentation Subset"> +<link rel="up" href="../hash.html" title="Chapter 10. Boost.Functional/Hash"> +<link rel="prev" href="rationale.html" title="Rationale"> +<link rel="next" href="../boost/hash.html" title="Struct template hash"> +</head> +<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"> +<table cellpadding="2" width="100%"><tr> +<td valign="top"><img alt="Boost C++ Libraries" width="277" height="86" src="../../../boost.png"></td> +<td align="center"><a href="../../../index.html">Home</a></td> +<td align="center"><a href="../../../libs/libraries.htm">Libraries</a></td> +<td align="center"><a href="http://www.boost.org/users/people.html">People</a></td> +<td align="center"><a href="http://www.boost.org/users/faq.html">FAQ</a></td> +<td align="center"><a href="../../../more/index.htm">More</a></td> +</tr></table> +<hr> +<div class="spirit-nav"> +<a accesskey="p" href="rationale.html"><img src="../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../hash.html"><img src="../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../index.html"><img src="../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="../boost/hash.html"><img src="../../../doc/src/images/next.png" alt="Next"></a> +</div> +<div class="section"> +<div class="titlepage"><div><div><h2 class="title" style="clear: both"> +<a name="hash.reference"></a>Reference</h2></div></div></div> +<div class="toc"><dl> +<dt><span class="section"><a href="reference.html#hash.reference.specification"></a></span></dt> +<dt><span class="section"><a href="reference.html#header.boost.functional.hash_hpp">Header <boost/functional/hash.hpp></a></span></dt> +</dl></div> +<div class="section"> +<div class="titlepage"></div> +<p>For the full specification, see section 6.3 of the + <a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2005/n1836.pdf" target="_top">C++ Standard Library Technical Report</a> + and issue 6.18 of the + <a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2005/n1837.pdf" target="_top">Library Extension Technical Report Issues List</a> (page 63). + </p> +</div> +<div class="section"> +<div class="titlepage"><div><div><h3 class="title"> +<a name="header.boost.functional.hash_hpp"></a>Header <<a href="../../../boost/functional/hash.hpp" target="_top">boost/functional/hash.hpp</a>></h3></div></div></div> +<p> + Defines <code class="computeroutput"><a class="link" href="../boost/hash.html" title="Struct template hash">boost::hash</a></code>, + and helper functions. + </p> +<pre class="synopsis"><span class="keyword">namespace</span> <span class="identifier">boost</span> <span class="special">{</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="../boost/hash.html" title="Struct template hash">hash</a><span class="special">;</span> + + <span class="keyword">template</span><span class="special"><</span><span class="special">></span> <span class="keyword">struct</span> <a class="link" href="../boost/hash_bool_id730163.html" title="Struct hash<bool>">hash</a><span class="special"><</span><span class="keyword">bool</span><span class="special">></span><span class="special">;</span> + <span class="keyword">template</span><span class="special"><</span><span class="special">></span> <span class="keyword">struct</span> <a class="link" href="../boost/hash_char_id727549.html" title="Struct hash<char>">hash</a><span class="special"><</span><span class="keyword">char</span><span class="special">></span><span class="special">;</span> + <span class="keyword">template</span><span class="special"><</span><span class="special">></span> <span class="keyword">struct</span> <a class="link" href="../boost/hash_signed_char_id750069.html" title="Struct hash<signed char>">hash</a><span class="special"><</span><span class="keyword">signed</span> <span class="keyword">char</span><span class="special">></span><span class="special">;</span> + <span class="keyword">template</span><span class="special"><</span><span class="special">></span> <span class="keyword">struct</span> <a class="link" href="../boost/hash_unsigned_char_id750126.html" title="Struct hash<unsigned char>">hash</a><span class="special"><</span><span class="keyword">unsigned</span> <span class="keyword">char</span><span class="special">></span><span class="special">;</span> + <span class="keyword">template</span><span class="special"><</span><span class="special">></span> <span class="keyword">struct</span> <a class="link" href="../boost/hash_wchar_t_id729419.html" title="Struct hash<wchar_t>">hash</a><span class="special"><</span><span class="keyword">wchar_t</span><span class="special">></span><span class="special">;</span> + <span class="keyword">template</span><span class="special"><</span><span class="special">></span> <span class="keyword">struct</span> <a class="link" href="../boost/hash_short_id729476.html" title="Struct hash<short>">hash</a><span class="special"><</span><span class="keyword">short</span><span class="special">></span><span class="special">;</span> + <span class="keyword">template</span><span class="special"><</span><span class="special">></span> <span class="keyword">struct</span> <a class="link" href="../boost/hash_unsigned_short_id751876.html" title="Struct hash<unsigned short>">hash</a><span class="special"><</span><span class="keyword">unsigned</span> <span class="keyword">short</span><span class="special">></span><span class="special">;</span> + <span class="keyword">template</span><span class="special"><</span><span class="special">></span> <span class="keyword">struct</span> <a class="link" href="../boost/hash_int_id729311.html" title="Struct hash<int>">hash</a><span class="special"><</span><span class="keyword">int</span><span class="special">></span><span class="special">;</span> + <span class="keyword">template</span><span class="special"><</span><span class="special">></span> <span class="keyword">struct</span> <a class="link" href="../boost/hash_unsigned_int_id729368.html" title="Struct hash<unsigned int>">hash</a><span class="special"><</span><span class="keyword">unsigned</span> <span class="keyword">int</span><span class="special">></span><span class="special">;</span> + <span class="keyword">template</span><span class="special"><</span><span class="special">></span> <span class="keyword">struct</span> <a class="link" href="../boost/hash_long_id749200.html" title="Struct hash<long>">hash</a><span class="special"><</span><span class="keyword">long</span><span class="special">></span><span class="special">;</span> + <span class="keyword">template</span><span class="special"><</span><span class="special">></span> <span class="keyword">struct</span> <a class="link" href="../boost/hash_unsigned_long_id749256.html" title="Struct hash<unsigned long>">hash</a><span class="special"><</span><span class="keyword">unsigned</span> <span class="keyword">long</span><span class="special">></span><span class="special">;</span> + <span class="keyword">template</span><span class="special"><</span><span class="special">></span> <span class="keyword">struct</span> <a class="link" href="../boost/hash_long_long_id752641.html" title="Struct hash<long long>">hash</a><span class="special"><</span><span class="keyword">long</span> <span class="keyword">long</span><span class="special">></span><span class="special">;</span> + <span class="keyword">template</span><span class="special"><</span><span class="special">></span> <span class="keyword">struct</span> <a class="link" href="../boost/hash_unsigned_long_long_id732192.html" title="Struct hash<unsigned long long>">hash</a><span class="special"><</span><span class="keyword">unsigned</span> <span class="keyword">long</span> <span class="keyword">long</span><span class="special">></span><span class="special">;</span> + <span class="keyword">template</span><span class="special"><</span><span class="special">></span> <span class="keyword">struct</span> <a class="link" href="../boost/hash_float_id732249.html" title="Struct hash<float>">hash</a><span class="special"><</span><span class="keyword">float</span><span class="special">></span><span class="special">;</span> + <span class="keyword">template</span><span class="special"><</span><span class="special">></span> <span class="keyword">struct</span> <a class="link" href="../boost/hash_double_id731143.html" title="Struct hash<double>">hash</a><span class="special"><</span><span class="keyword">double</span><span class="special">></span><span class="special">;</span> + <span class="keyword">template</span><span class="special"><</span><span class="special">></span> <span class="keyword">struct</span> <a class="link" href="../boost/hash_long_double_id731200.html" title="Struct hash<long double>">hash</a><span class="special"><</span><span class="keyword">long</span> <span class="keyword">double</span><span class="special">></span><span class="special">;</span> + <span class="keyword">template</span><span class="special"><</span><span class="special">></span> <span class="keyword">struct</span> <a class="link" href="../boost/hash_std_string_id729518.html" title="Struct hash<std::string>">hash</a><span class="special"><</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span><span class="special">></span><span class="special">;</span> + <span class="keyword">template</span><span class="special"><</span><span class="special">></span> <span class="keyword">struct</span> <a class="link" href="../boost/hash_std_wstring_id729575.html" title="Struct hash<std::wstring>">hash</a><span class="special"><</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">wstring</span><span class="special">></span><span class="special">;</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="../boost/hash_T_id731670.html" title="Struct template hash<T*>">hash</a><span class="special"><</span><span class="identifier">T</span><span class="special">*</span><span class="special">></span><span class="special">;</span> + <span class="keyword">template</span><span class="special"><</span><span class="special">></span> <span class="keyword">struct</span> <a class="link" href="../boost/hash_std_type_index_id733286.html" title="Struct hash<std::type_index>">hash</a><span class="special"><</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">type_index</span><span class="special">></span><span class="special">;</span> + + <span class="comment">// <a class="link" href="reference.html#id725825-bb">Support functions (Boost extension).</a></span> + <span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> T<span class="special">></span> <span class="keyword">void</span> <a class="link" href="reference.html#boost.hash_combine"><span class="identifier">hash_combine</span></a><span class="special">(</span><span class="identifier">size_t</span> <span class="special">&</span><span class="special">,</span> <span class="identifier">T</span> <span class="keyword">const</span><span class="special">&</span><span class="special">)</span><span class="special">;</span> + <span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> It<span class="special">></span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <a class="link" href="reference.html#id725365-bb"><span class="identifier">hash_range</span></a><span class="special">(</span><span class="identifier">It</span><span class="special">,</span> <span class="identifier">It</span><span class="special">)</span><span class="special">;</span> + <span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> It<span class="special">></span> <span class="keyword">void</span> <a class="link" href="reference.html#id725394-bb"><span class="identifier">hash_range</span></a><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span><span class="special">&</span><span class="special">,</span> <span class="identifier">It</span><span class="special">,</span> <span class="identifier">It</span><span class="special">)</span><span class="special">;</span> + + <span class="comment">// <a class="link" href="reference.html#id731266-bb">Overloadable hash implementation (Boost extension).</a></span> + <span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <a class="link" href="reference.html#id732898-bb"><span class="identifier">hash_value</span></a><span class="special">(</span><span class="keyword">bool</span><span class="special">)</span><span class="special">;</span> + <span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <a class="link" href="reference.html#id732913-bb"><span class="identifier">hash_value</span></a><span class="special">(</span><span class="keyword">char</span><span class="special">)</span><span class="special">;</span> + <span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <a class="link" href="reference.html#id732927-bb"><span class="identifier">hash_value</span></a><span class="special">(</span><span class="keyword">signed</span> <span class="keyword">char</span><span class="special">)</span><span class="special">;</span> + <span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <a class="link" href="reference.html#id732959-bb"><span class="identifier">hash_value</span></a><span class="special">(</span><span class="keyword">unsigned</span> <span class="keyword">char</span><span class="special">)</span><span class="special">;</span> + <span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <a class="link" href="reference.html#id732974-bb"><span class="identifier">hash_value</span></a><span class="special">(</span><span class="keyword">wchar_t</span><span class="special">)</span><span class="special">;</span> + <span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <a class="link" href="reference.html#id729013-bb"><span class="identifier">hash_value</span></a><span class="special">(</span><span class="keyword">short</span><span class="special">)</span><span class="special">;</span> + <span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <a class="link" href="reference.html#id732865-bb"><span class="identifier">hash_value</span></a><span class="special">(</span><span class="keyword">unsigned</span> <span class="keyword">short</span><span class="special">)</span><span class="special">;</span> + <span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <a class="link" href="reference.html#id732994-bb"><span class="identifier">hash_value</span></a><span class="special">(</span><span class="keyword">int</span><span class="special">)</span><span class="special">;</span> + <span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <a class="link" href="reference.html#id733008-bb"><span class="identifier">hash_value</span></a><span class="special">(</span><span class="keyword">unsigned</span> <span class="keyword">int</span><span class="special">)</span><span class="special">;</span> + <span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <a class="link" href="reference.html#id733023-bb"><span class="identifier">hash_value</span></a><span class="special">(</span><span class="keyword">long</span><span class="special">)</span><span class="special">;</span> + <span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <a class="link" href="reference.html#id733037-bb"><span class="identifier">hash_value</span></a><span class="special">(</span><span class="keyword">unsigned</span> <span class="keyword">long</span><span class="special">)</span><span class="special">;</span> + <span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <a class="link" href="reference.html#id728759-bb"><span class="identifier">hash_value</span></a><span class="special">(</span><span class="keyword">long</span> <span class="keyword">long</span><span class="special">)</span><span class="special">;</span> + <span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <a class="link" href="reference.html#id730771-bb"><span class="identifier">hash_value</span></a><span class="special">(</span><span class="keyword">unsigned</span> <span class="keyword">long</span> <span class="keyword">long</span><span class="special">)</span><span class="special">;</span> + <span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <a class="link" href="reference.html#id731085-bb"><span class="identifier">hash_value</span></a><span class="special">(</span><span class="keyword">float</span><span class="special">)</span><span class="special">;</span> + <span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <a class="link" href="reference.html#id729126-bb"><span class="identifier">hash_value</span></a><span class="special">(</span><span class="keyword">double</span><span class="special">)</span><span class="special">;</span> + <span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <a class="link" href="reference.html#id729141-bb"><span class="identifier">hash_value</span></a><span class="special">(</span><span class="keyword">long</span> <span class="keyword">double</span><span class="special">)</span><span class="special">;</span> + <span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> T<span class="special">></span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <a class="link" href="reference.html#id650142-bb"><span class="identifier">hash_value</span></a><span class="special">(</span><span class="identifier">T</span><span class="special">*</span> <span class="keyword">const</span><span class="special">&</span><span class="special">)</span><span class="special">;</span> + <span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> T<span class="special">,</span> <span class="keyword">unsigned</span> N<span class="special">></span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <a class="link" href="reference.html#id748098-bb"><span class="identifier">hash_value</span></a><span class="special">(</span><span class="identifier">T</span> <span class="special">(</span><span class="special">&</span><span class="identifier">val</span><span class="special">)</span><span class="special">[</span><span class="identifier">N</span><span class="special">]</span><span class="special">)</span><span class="special">;</span> + <span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> T<span class="special">,</span> <span class="keyword">unsigned</span> N<span class="special">></span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <a class="link" href="reference.html#id732878-bb"><span class="identifier">hash_value</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">T</span> <span class="special">(</span><span class="special">&</span><span class="identifier">val</span><span class="special">)</span><span class="special">[</span><span class="identifier">N</span><span class="special">]</span><span class="special">)</span><span class="special">;</span> + <span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> Ch<span class="special">,</span> <span class="keyword">typename</span> A<span class="special">></span> + <span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <a class="link" href="reference.html#id724777-bb"><span class="identifier">hash_value</span></a><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_string</span><span class="special"><</span><span class="identifier">Ch</span><span class="special">,</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">char_traits</span><span class="special"><</span><span class="identifier">Ch</span><span class="special">></span><span class="special">,</span> <span class="identifier">A</span><span class="special">></span> <span class="keyword">const</span><span class="special">&</span><span class="special">)</span><span class="special">;</span> + <span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> A<span class="special">,</span> <span class="keyword">typename</span> B<span class="special">></span> + <span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <a class="link" href="reference.html#id724808-bb"><span class="identifier">hash_value</span></a><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">pair</span><span class="special"><</span><span class="identifier">A</span><span class="special">,</span> <span class="identifier">B</span><span class="special">></span> <span class="keyword">const</span><span class="special">&</span><span class="special">)</span><span class="special">;</span> + <span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> T<span class="special">,</span> <span class="keyword">typename</span> A<span class="special">></span> + <span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <a class="link" href="reference.html#id724836-bb"><span class="identifier">hash_value</span></a><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">vector</span><span class="special"><</span><span class="identifier">T</span><span class="special">,</span> <span class="identifier">A</span><span class="special">></span> <span class="keyword">const</span><span class="special">&</span><span class="special">)</span><span class="special">;</span> + <span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> T<span class="special">,</span> <span class="keyword">typename</span> A<span class="special">></span> + <span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <a class="link" href="reference.html#id751089-bb"><span class="identifier">hash_value</span></a><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">list</span><span class="special"><</span><span class="identifier">T</span><span class="special">,</span> <span class="identifier">A</span><span class="special">></span> <span class="keyword">const</span><span class="special">&</span><span class="special">)</span><span class="special">;</span> + <span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> T<span class="special">,</span> <span class="keyword">typename</span> A<span class="special">></span> + <span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <a class="link" href="reference.html#id728269-bb"><span class="identifier">hash_value</span></a><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">deque</span><span class="special"><</span><span class="identifier">T</span><span class="special">,</span> <span class="identifier">A</span><span class="special">></span> <span class="keyword">const</span><span class="special">&</span><span class="special">)</span><span class="special">;</span> + <span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> K<span class="special">,</span> <span class="keyword">typename</span> C<span class="special">,</span> <span class="keyword">typename</span> A<span class="special">></span> + <span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <a class="link" href="reference.html#id728297-bb"><span class="identifier">hash_value</span></a><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">set</span><span class="special"><</span><span class="identifier">K</span><span class="special">,</span> <span class="identifier">C</span><span class="special">,</span> <span class="identifier">A</span><span class="special">></span> <span class="keyword">const</span><span class="special">&</span><span class="special">)</span><span class="special">;</span> + <span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> K<span class="special">,</span> <span class="keyword">typename</span> C<span class="special">,</span> <span class="keyword">typename</span> A<span class="special">></span> + <span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <a class="link" href="reference.html#id728329-bb"><span class="identifier">hash_value</span></a><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">multiset</span><span class="special"><</span><span class="identifier">K</span><span class="special">,</span> <span class="identifier">C</span><span class="special">,</span> <span class="identifier">A</span><span class="special">></span> <span class="keyword">const</span><span class="special">&</span><span class="special">)</span><span class="special">;</span> + <span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> K<span class="special">,</span> <span class="keyword">typename</span> T<span class="special">,</span> <span class="keyword">typename</span> C<span class="special">,</span> <span class="keyword">typename</span> A<span class="special">></span> + <span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <a class="link" href="reference.html#id728361-bb"><span class="identifier">hash_value</span></a><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">map</span><span class="special"><</span><span class="identifier">K</span><span class="special">,</span> <span class="identifier">T</span><span class="special">,</span> <span class="identifier">C</span><span class="special">,</span> <span class="identifier">A</span><span class="special">></span> <span class="keyword">const</span><span class="special">&</span><span class="special">)</span><span class="special">;</span> + <span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> K<span class="special">,</span> <span class="keyword">typename</span> T<span class="special">,</span> <span class="keyword">typename</span> C<span class="special">,</span> <span class="keyword">typename</span> A<span class="special">></span> + <span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <a class="link" href="reference.html#id728397-bb"><span class="identifier">hash_value</span></a><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">multimap</span><span class="special"><</span><span class="identifier">K</span><span class="special">,</span> <span class="identifier">T</span><span class="special">,</span> <span class="identifier">C</span><span class="special">,</span> <span class="identifier">A</span><span class="special">></span> <span class="keyword">const</span><span class="special">&</span><span class="special">)</span><span class="special">;</span> + <span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> T<span class="special">></span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <a class="link" href="reference.html#id732938-bb"><span class="identifier">hash_value</span></a><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">complex</span><span class="special"><</span><span class="identifier">T</span><span class="special">></span> <span class="keyword">const</span><span class="special">&</span><span class="special">)</span><span class="special">;</span> + <span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <a class="link" href="reference.html#id728893-bb"><span class="identifier">hash_value</span></a><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">type_index</span><span class="special">)</span><span class="special">;</span> +<span class="special">}</span></pre> +<div class="refsect2"> +<a name="id1560549"></a><h3> +<a name="id725825-bb"></a><code class="computeroutput"></code> Support functions (Boost extension).</h3> +<div class="orderedlist"><ol class="orderedlist" type="1"> +<li class="listitem"> +<pre class="literallayout"><span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> T<span class="special">></span> <span class="keyword">void</span> <a name="boost.hash_combine"></a><span class="identifier">hash_combine</span><span class="special">(</span><span class="identifier">size_t</span> <span class="special">&</span> seed<span class="special">,</span> <span class="identifier">T</span> <span class="keyword">const</span><span class="special">&</span> v<span class="special">)</span><span class="special">;</span></pre> +<p class="simpara"> + Called repeatedly to incrementally create a hash value from + several variables. + </p> +<div class="variablelist"><table border="0"> +<col align="left" valign="top"> +<tbody> +<tr> +<td><p><span class="term">Effects:</span></p></td> +<td><pre class="programlisting"><span class="identifier">seed</span> <span class="special">^=</span> <a class="link" href="reference.html#boost.hash_value_id732888">hash_value</a><span class="special">(</span><span class="identifier">v</span><span class="special">)</span> <span class="special">+</span> <span class="number">0x9e3779b9</span> <span class="special">+</span> <span class="special">(</span><span class="identifier">seed</span> <span class="special"><<</span> <span class="number">6</span><span class="special">)</span> <span class="special">+</span> <span class="special">(</span><span class="identifier">seed</span> <span class="special">>></span> <span class="number">2</span><span class="special">)</span><span class="special">;</span></pre></td> +</tr> +<tr> +<td><p><span class="term">Notes:</span></p></td> +<td> +<p><a class="link" href="reference.html#boost.hash_value_id732888">hash_value</a> is called without + qualification, so that overloads can be found via ADL.</p> +<p>This is an extension to TR1</p> +</td> +</tr> +<tr> +<td><p><span class="term">Throws:</span></p></td> +<td> + Only throws if <a class="link" href="reference.html#boost.hash_value_id732888">hash_value</a>(T) throws. + Strong exception safety, as long as <a class="link" href="reference.html#boost.hash_value_id732888">hash_value</a>(T) + also has strong exception safety. + </td> +</tr> +</tbody> +</table></div> +</li> +<li class="listitem"> +<p><a name="boost.hash_range"></a></p> +<pre class="literallayout"><span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> It<span class="special">></span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <a name="id725365-bb"></a><span class="identifier">hash_range</span><span class="special">(</span><span class="identifier">It</span> first<span class="special">,</span> <span class="identifier">It</span> last<span class="special">)</span><span class="special">;</span> +<span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> It<span class="special">></span> <span class="keyword">void</span> <a name="id725394-bb"></a><span class="identifier">hash_range</span><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span><span class="special">&</span> seed<span class="special">,</span> <span class="identifier">It</span> first<span class="special">,</span> <span class="identifier">It</span> last<span class="special">)</span><span class="special">;</span></pre> +<p class="simpara"> + Calculate the combined hash value of the elements of an iterator + range. + </p> +<div class="variablelist"><table border="0"> +<col align="left" valign="top"> +<tbody> +<tr> +<td><p><span class="term">Effects:</span></p></td> +<td> +<p>For the two argument overload: +</p> +<pre class="programlisting"> +<span class="identifier">size_t</span> <span class="identifier">seed</span> <span class="special">=</span> <span class="number">0</span><span class="special">;</span> + +<span class="keyword">for</span><span class="special">(</span><span class="special">;</span> <span class="identifier">first</span> <span class="special">!=</span> <span class="identifier">last</span><span class="special">;</span> <span class="special">++</span><span class="identifier">first</span><span class="special">)</span> +<span class="special">{</span> + <a class="link" href="reference.html#boost.hash_combine">hash_combine</a><span class="special">(</span><span class="identifier">seed</span><span class="special">,</span> <span class="special">*</span><span class="identifier">first</span><span class="special">)</span><span class="special">;</span> +<span class="special">}</span> + +<span class="keyword">return</span> <span class="identifier">seed</span><span class="special">;</span> +</pre> +<p> + </p>For the three arguments overload: +<pre class="programlisting"> +<span class="keyword">for</span><span class="special">(</span><span class="special">;</span> <span class="identifier">first</span> <span class="special">!=</span> <span class="identifier">last</span><span class="special">;</span> <span class="special">++</span><span class="identifier">first</span><span class="special">)</span> +<span class="special">{</span> + <a class="link" href="reference.html#boost.hash_combine">hash_combine</a><span class="special">(</span><span class="identifier">seed</span><span class="special">,</span> <span class="special">*</span><span class="identifier">first</span><span class="special">)</span><span class="special">;</span> +<span class="special">}</span> +</pre> +<p> + </p> +</td> +</tr> +<tr> +<td><p><span class="term">Notes:</span></p></td> +<td> +<p> + <code class="computeroutput">hash_range</code> is sensitive to the order of the elements + so it wouldn't be appropriate to use this with an unordered + container. + </p> +<p>This is an extension to TR1</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="reference.html#boost.hash_value_id732888">hash_value</a>(std::iterator_traits<It>::value_type)</code> + throws. <code class="computeroutput">hash_range(std::size_t&, It, It)</code> has basic exception safety as long as + <code class="computeroutput"><a class="link" href="reference.html#boost.hash_value_id732888">hash_value</a>(std::iterator_traits<It>::value_type)</code> + has basic exception safety. + </p></td> +</tr> +</tbody> +</table></div> +</li> +</ol></div> +</div> +<div class="refsect2"> +<a name="id1561316"></a><h3> +<a name="id731266-bb"></a><code class="computeroutput"></code> Overloadable hash implementation (Boost extension).</h3> +<div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem"> +<p><a name="boost.hash_value_id732888"></a></p> +<pre class="literallayout"><span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <a name="id732898-bb"></a><span class="identifier">hash_value</span><span class="special">(</span><span class="keyword">bool</span> val<span class="special">)</span><span class="special">;</span> +<span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <a name="id732913-bb"></a><span class="identifier">hash_value</span><span class="special">(</span><span class="keyword">char</span> val<span class="special">)</span><span class="special">;</span> +<span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <a name="id732927-bb"></a><span class="identifier">hash_value</span><span class="special">(</span><span class="keyword">signed</span> <span class="keyword">char</span> val<span class="special">)</span><span class="special">;</span> +<span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <a name="id732959-bb"></a><span class="identifier">hash_value</span><span class="special">(</span><span class="keyword">unsigned</span> <span class="keyword">char</span> val<span class="special">)</span><span class="special">;</span> +<span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <a name="id732974-bb"></a><span class="identifier">hash_value</span><span class="special">(</span><span class="keyword">wchar_t</span> val<span class="special">)</span><span class="special">;</span> +<span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <a name="id729013-bb"></a><span class="identifier">hash_value</span><span class="special">(</span><span class="keyword">short</span> val<span class="special">)</span><span class="special">;</span> +<span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <a name="id732865-bb"></a><span class="identifier">hash_value</span><span class="special">(</span><span class="keyword">unsigned</span> <span class="keyword">short</span> val<span class="special">)</span><span class="special">;</span> +<span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <a name="id732994-bb"></a><span class="identifier">hash_value</span><span class="special">(</span><span class="keyword">int</span> val<span class="special">)</span><span class="special">;</span> +<span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <a name="id733008-bb"></a><span class="identifier">hash_value</span><span class="special">(</span><span class="keyword">unsigned</span> <span class="keyword">int</span> val<span class="special">)</span><span class="special">;</span> +<span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <a name="id733023-bb"></a><span class="identifier">hash_value</span><span class="special">(</span><span class="keyword">long</span> val<span class="special">)</span><span class="special">;</span> +<span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <a name="id733037-bb"></a><span class="identifier">hash_value</span><span class="special">(</span><span class="keyword">unsigned</span> <span class="keyword">long</span> val<span class="special">)</span><span class="special">;</span> +<span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <a name="id728759-bb"></a><span class="identifier">hash_value</span><span class="special">(</span><span class="keyword">long</span> <span class="keyword">long</span> val<span class="special">)</span><span class="special">;</span> +<span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <a name="id730771-bb"></a><span class="identifier">hash_value</span><span class="special">(</span><span class="keyword">unsigned</span> <span class="keyword">long</span> <span class="keyword">long</span> val<span class="special">)</span><span class="special">;</span> +<span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <a name="id731085-bb"></a><span class="identifier">hash_value</span><span class="special">(</span><span class="keyword">float</span> val<span class="special">)</span><span class="special">;</span> +<span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <a name="id729126-bb"></a><span class="identifier">hash_value</span><span class="special">(</span><span class="keyword">double</span> val<span class="special">)</span><span class="special">;</span> +<span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <a name="id729141-bb"></a><span class="identifier">hash_value</span><span class="special">(</span><span class="keyword">long</span> <span class="keyword">double</span> val<span class="special">)</span><span class="special">;</span> +<span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> T<span class="special">></span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <a name="id650142-bb"></a><span class="identifier">hash_value</span><span class="special">(</span><span class="identifier">T</span><span class="special">*</span> <span class="keyword">const</span><span class="special">&</span> val<span class="special">)</span><span class="special">;</span> +<span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> T<span class="special">,</span> <span class="keyword">unsigned</span> N<span class="special">></span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <a name="id748098-bb"></a><span class="identifier">hash_value</span><span class="special">(</span><span class="identifier">T</span> <span class="special">(</span><span class="special">&</span><span class="identifier">val</span><span class="special">)</span><span class="special">[</span><span class="identifier">N</span><span class="special">]</span><span class="special">)</span><span class="special">;</span> +<span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> T<span class="special">,</span> <span class="keyword">unsigned</span> N<span class="special">></span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <a name="id732878-bb"></a><span class="identifier">hash_value</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">T</span> <span class="special">(</span><span class="special">&</span><span class="identifier">val</span><span class="special">)</span><span class="special">[</span><span class="identifier">N</span><span class="special">]</span><span class="special">)</span><span class="special">;</span> +<span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> Ch<span class="special">,</span> <span class="keyword">typename</span> A<span class="special">></span> + <span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <a name="id724777-bb"></a><span class="identifier">hash_value</span><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_string</span><span class="special"><</span><span class="identifier">Ch</span><span class="special">,</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">char_traits</span><span class="special"><</span><span class="identifier">Ch</span><span class="special">></span><span class="special">,</span> <span class="identifier">A</span><span class="special">></span> <span class="keyword">const</span><span class="special">&</span> val<span class="special">)</span><span class="special">;</span> +<span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> A<span class="special">,</span> <span class="keyword">typename</span> B<span class="special">></span> + <span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <a name="id724808-bb"></a><span class="identifier">hash_value</span><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">pair</span><span class="special"><</span><span class="identifier">A</span><span class="special">,</span> <span class="identifier">B</span><span class="special">></span> <span class="keyword">const</span><span class="special">&</span> val<span class="special">)</span><span class="special">;</span> +<span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> T<span class="special">,</span> <span class="keyword">typename</span> A<span class="special">></span> + <span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <a name="id724836-bb"></a><span class="identifier">hash_value</span><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">vector</span><span class="special"><</span><span class="identifier">T</span><span class="special">,</span> <span class="identifier">A</span><span class="special">></span> <span class="keyword">const</span><span class="special">&</span> val<span class="special">)</span><span class="special">;</span> +<span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> T<span class="special">,</span> <span class="keyword">typename</span> A<span class="special">></span> + <span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <a name="id751089-bb"></a><span class="identifier">hash_value</span><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">list</span><span class="special"><</span><span class="identifier">T</span><span class="special">,</span> <span class="identifier">A</span><span class="special">></span> <span class="keyword">const</span><span class="special">&</span> val<span class="special">)</span><span class="special">;</span> +<span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> T<span class="special">,</span> <span class="keyword">typename</span> A<span class="special">></span> + <span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <a name="id728269-bb"></a><span class="identifier">hash_value</span><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">deque</span><span class="special"><</span><span class="identifier">T</span><span class="special">,</span> <span class="identifier">A</span><span class="special">></span> <span class="keyword">const</span><span class="special">&</span> val<span class="special">)</span><span class="special">;</span> +<span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> K<span class="special">,</span> <span class="keyword">typename</span> C<span class="special">,</span> <span class="keyword">typename</span> A<span class="special">></span> + <span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <a name="id728297-bb"></a><span class="identifier">hash_value</span><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">set</span><span class="special"><</span><span class="identifier">K</span><span class="special">,</span> <span class="identifier">C</span><span class="special">,</span> <span class="identifier">A</span><span class="special">></span> <span class="keyword">const</span><span class="special">&</span> val<span class="special">)</span><span class="special">;</span> +<span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> K<span class="special">,</span> <span class="keyword">typename</span> C<span class="special">,</span> <span class="keyword">typename</span> A<span class="special">></span> + <span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <a name="id728329-bb"></a><span class="identifier">hash_value</span><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">multiset</span><span class="special"><</span><span class="identifier">K</span><span class="special">,</span> <span class="identifier">C</span><span class="special">,</span> <span class="identifier">A</span><span class="special">></span> <span class="keyword">const</span><span class="special">&</span> val<span class="special">)</span><span class="special">;</span> +<span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> K<span class="special">,</span> <span class="keyword">typename</span> T<span class="special">,</span> <span class="keyword">typename</span> C<span class="special">,</span> <span class="keyword">typename</span> A<span class="special">></span> + <span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <a name="id728361-bb"></a><span class="identifier">hash_value</span><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">map</span><span class="special"><</span><span class="identifier">K</span><span class="special">,</span> <span class="identifier">T</span><span class="special">,</span> <span class="identifier">C</span><span class="special">,</span> <span class="identifier">A</span><span class="special">></span> <span class="keyword">const</span><span class="special">&</span> val<span class="special">)</span><span class="special">;</span> +<span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> K<span class="special">,</span> <span class="keyword">typename</span> T<span class="special">,</span> <span class="keyword">typename</span> C<span class="special">,</span> <span class="keyword">typename</span> A<span class="special">></span> + <span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <a name="id728397-bb"></a><span class="identifier">hash_value</span><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">multimap</span><span class="special"><</span><span class="identifier">K</span><span class="special">,</span> <span class="identifier">T</span><span class="special">,</span> <span class="identifier">C</span><span class="special">,</span> <span class="identifier">A</span><span class="special">></span> <span class="keyword">const</span><span class="special">&</span> val<span class="special">)</span><span class="special">;</span> +<span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> T<span class="special">></span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <a name="id732938-bb"></a><span class="identifier">hash_value</span><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">complex</span><span class="special"><</span><span class="identifier">T</span><span class="special">></span> <span class="keyword">const</span><span class="special">&</span> val<span class="special">)</span><span class="special">;</span> +<span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <a name="id728893-bb"></a><span class="identifier">hash_value</span><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">type_index</span> val<span class="special">)</span><span class="special">;</span></pre> +<p class="simpara"> + Implementation of the hash function. + </p> +<p> + Generally shouldn't be called directly by users, instead they should use + <code class="computeroutput"><a class="link" href="../boost/hash.html" title="Struct template hash">boost::hash</a></code>, <code class="computeroutput"><a class="link" href="reference.html#boost.hash_range">boost::hash_range</a></code> + or <code class="computeroutput"><a class="link" href="reference.html#boost.hash_combine">boost::hash_combine</a></code> which + call <code class="computeroutput">hash_value</code> without namespace qualification so that overloads + for custom types are found via ADL. + </p> +<div class="variablelist"><table border="0"> +<col align="left" valign="top"> +<tbody> +<tr> +<td><p><span class="term">Notes:</span></p></td> +<td><p>This is an extension to TR1</p></td> +</tr> +<tr> +<td><p><span class="term">Throws:</span></p></td> +<td> + Only throws if a user supplied version of + <code class="computeroutput"><a class="link" href="reference.html#boost.hash_value_id732888">hash_value</a></code> + throws for an element of a container, or + one of the types stored in a pair. + </td> +</tr> +<tr> +<td><p><span class="term">Returns:</span></p></td> +<td><div class="informaltable"><table class="table"> +<colgroup> +<col> +<col> +</colgroup> +<thead><tr> +<th>Types</th> +<th>Returns</th> +</tr></thead> +<tbody> +<tr> +<td> +<code class="computeroutput">bool</code>, + <code class="computeroutput">char</code>, <code class="computeroutput">signed char</code>, <code class="computeroutput">unsigned char</code>, <code class="computeroutput">wchar_t</code>, + <code class="computeroutput">short</code>, <code class="computeroutput">unsigned short</code>, + <code class="computeroutput">int</code>, <code class="computeroutput">unsigned int</code>, <code class="computeroutput">long</code>, <code class="computeroutput">unsigned long</code> + </td> +<td><code class="computeroutput">val</code></td> +</tr> +<tr> +<td> +<code class="computeroutput">long long</code>, <code class="computeroutput">unsigned long long</code> +</td> +<td> +<code class="computeroutput">val</code> when <code class="computeroutput">abs(val) <= std::numeric_limits<std::size_t>::max()</code>.</td> +</tr> +<tr> +<td> +<code class="computeroutput">float</code>, <code class="computeroutput">double</code>, <code class="computeroutput">long double</code> +</td> +<td>An unspecified value, except that equal arguments shall yield the same result.</td> +</tr> +<tr> +<td><code class="computeroutput">T*</code></td> +<td>An unspecified value, except that equal arguments shall yield the same result.</td> +</tr> +<tr> +<td> + <code class="computeroutput">T val[N]</code>, + <code class="computeroutput">const T val[N]</code> + </td> +<td><code class="computeroutput">hash_range(val, val+N)</code></td> +</tr> +<tr> +<td> + <code class="computeroutput">std:basic_string<Ch, std::char_traits<Ch>, A></code>, + <code class="computeroutput">std::vector<T, A></code>, + <code class="computeroutput">std::list<T, A></code>, + <code class="computeroutput">std::deque<T, A></code>, + <code class="computeroutput">std::set<K, C, A></code>, + <code class="computeroutput">std::multiset<K, C, A></code>, + <code class="computeroutput">std::map<K, T, C, A></code>, + <code class="computeroutput">std::multimap<K, T, C, A></code> + </td> +<td><code class="computeroutput">hash_range(val.begin(), val.end())</code></td> +</tr> +<tr> +<td><code class="computeroutput">std::pair<A, B></code></td> +<td><pre xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="table-programlisting"><span class="identifier">size_t</span> <span class="identifier">seed</span> <span class="special">=</span> <span class="number">0</span><span class="special">;</span> +<a class="link" href="reference.html#boost.hash_combine">hash_combine</a><span class="special">(</span><span class="identifier">seed</span><span class="special">,</span> <span class="identifier">val</span><span class="special">.</span><span class="identifier">first</span><span class="special">)</span><span class="special">;</span> +<a class="link" href="reference.html#boost.hash_combine">hash_combine</a><span class="special">(</span><span class="identifier">seed</span><span class="special">,</span> <span class="identifier">val</span><span class="special">.</span><span class="identifier">second</span><span class="special">)</span><span class="special">;</span> +<span class="keyword">return</span> <span class="identifier">seed</span><span class="special">;</span></pre></td> +</tr> +<tr> +<td> + <code class="computeroutput">std::complex<T></code> + </td> +<td>When <code class="computeroutput">T</code> is a built in type and <code class="computeroutput">val.imag() == 0</code>, the result is equal to <code class="computeroutput">hash_value(val.real())</code>. Otherwise an unspecified value, except that equal arguments shall yield the same result.</td> +</tr> +<tr> +<td> + <code class="computeroutput">std::type_index</code> + </td> +<td><code class="computeroutput">val.hash_code()</code></td> +</tr> +</tbody> +</table></div></td> +</tr> +</tbody> +</table></div> +</li></ol></div> +</div> +</div> +</div> +<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> +<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>) + </p> +</div></td> +</tr></table> +<hr> +<div class="spirit-nav"> +<a accesskey="p" href="rationale.html"><img src="../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../hash.html"><img src="../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../index.html"><img src="../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="../boost/hash.html"><img src="../../../doc/src/images/next.png" alt="Next"></a> +</div> +</body> +</html> |