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<table id="toc" class="toc"><tr><td><div id="toctitle"><h2>Contents</h2></div>
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<li class="toclevel-1 tocsection-1"><a href="functional.html#Namespaces"><span class="tocnumber">1</span> <span class="toctext">Namespaces</span></a>
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<li class="toclevel-2"><a href="functional.html#Hashing"><span class="tocnumber">2.1</span> <span class="toctext">Hashing</span></a></li>
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<li class="toclevel-2"><a href="functional.html#Bitwise_operations"><span class="tocnumber">4.4</span> <span class="toctext">Bitwise operations</span></a></li>
<li class="toclevel-2"><a href="functional.html#Negators"><span class="tocnumber">4.5</span> <span class="toctext">Negators</span></a></li>
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<li class="toclevel-1 tocsection-5"><a href="functional.html#Deprecated_in_C.2B.2B11"><span class="tocnumber">5</span> <span class="toctext">Deprecated in C++11</span></a>
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<li class="toclevel-2"><a href="functional.html#Function_adaptors"><span class="tocnumber">5.3</span> <span class="toctext">Function adaptors</span></a></li>
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<li class="toclevel-2 tocsection-7"><a href="functional.html#Class_std::reference_wrapper"><span class="tocnumber">6.1</span> <span class="toctext">Class <span>std::reference_wrapper</span></span></a></li>
<li class="toclevel-2 tocsection-8"><a href="functional.html#Class_std::is_bind_expression"><span class="tocnumber">6.2</span> <span class="toctext">Class <span>std::is_bind_expression</span></span></a></li>
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<li class="toclevel-1 tocsection-11"><a href="functional.html#See_Also"><span class="tocnumber">7</span> <span class="toctext">See Also</span></a></li>
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<h3><span class="editsection">[<a href="http://en.cppreference.com/mwiki/index.php?title=cpp/header/functional&action=edit&section=1" title="Edit section: Namespaces">edit</a>]</span> <span class="mw-headline" id="Namespaces">Namespaces</span></h3>
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<td> <a href="../utility/functional/placeholders.html" title="cpp/utility/functional/placeholders">placeholders</a>
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<td> Defines placeholders for the unbound arguments in a std::bind expression
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<td colspan="2"> <div>Defined in namespace <code>std::placeholders</code> </div>
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<td> <div class="t-dsc-member-div"><div><a href="../utility/functional/placeholders.html" title="cpp/utility/functional/placeholders"> <span class="t-lines"><span>_1, _2, _3, _4, ...</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div>
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<td> placeholders for the unbound arguments in a <code>std::bind</code> expression <br /> <span class="t-mark">(constant)</span> <span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:cpp/utility/functional/dsc_placeholders&action=edit">[edit]</a></span>
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<td> wraps callable object of any type with specified function call signature <br /> <span class="t-mark">(class template)</span> <span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:cpp/utility/functional/dsc_function&action=edit">[edit]</a></span>
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<td> <div class="t-dsc-member-div"><div><a href="../utility/functional/mem_fn.html" title="cpp/utility/functional/mem fn"> <span class="t-lines"><span>mem_fn</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div>
</td>
<td> creates a function object out of a pointer to a member <br /> <span class="t-mark">(function template)</span> <span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:cpp/utility/functional/dsc_mem_fn&action=edit">[edit]</a></span>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="../utility/functional/bad_function_call.html" title="cpp/utility/functional/bad function call"> <span class="t-lines"><span>bad_function_call</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div>
</td>
<td> the exception thrown when invoking an empty <span class="t-lc"><a href="../utility/functional/function.html" title="cpp/utility/functional/function">std::function</a></span> <br /> <span class="t-mark">(class)</span> <span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:cpp/utility/functional/dsc_bad_function_call&action=edit">[edit]</a></span>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="../utility/functional/is_bind_expression.html" title="cpp/utility/functional/is bind expression"> <span class="t-lines"><span>is_bind_expression</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div>
</td>
<td> indicates that an object is <code>std::bind</code> expression or can be used as one <br /> <span class="t-mark">(class template)</span> <span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:cpp/utility/functional/dsc_is_bind_expression&action=edit">[edit]</a></span>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="../utility/functional/is_placeholder.html" title="cpp/utility/functional/is placeholder"> <span class="t-lines"><span>is_placeholder</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div>
</td>
<td> indicates that an object is a standard placeholder or can be used as one <br /> <span class="t-mark">(class template)</span> <span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:cpp/utility/functional/dsc_is_placeholder&action=edit">[edit]</a></span>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="../utility/functional/reference_wrapper.html" title="cpp/utility/functional/reference wrapper"> <span class="t-lines"><span>reference_wrapper</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div>
</td>
<td> <a href="../concept/CopyConstructible.html" title="cpp/concept/CopyConstructible"><code>CopyConstructible</code></a> and <a href="../concept/CopyAssignable.html" title="cpp/concept/CopyAssignable"><code>CopyAssignable</code></a> reference wrapper <br /> <span class="t-mark">(class template)</span> <span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:cpp/utility/functional/dsc_reference_wrapper&action=edit">[edit]</a></span>
</td></tr>
<tr>
<td colspan="2"> <h5> <span class="mw-headline" id="Hashing"> Hashing </span></h5>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="../utility/hash.html" title="cpp/utility/hash"> <span class="t-lines"><span>hash</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div>
</td>
<td> hash function object <br /> <span class="t-mark">(class template)</span> <span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:cpp/utility/dsc_hash&action=edit">[edit]</a></span>
</td></tr>
<tr class="t-dsc">
<td> <span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="kw1">template</span><span class="sy1"><></span> <span class="kw1">struct</span> hash<span class="sy1"><</span><span class="kw4">bool</span><span class="sy1">></span><span class="sy4">;</span><br />
<p><span class="kw1">template</span><span class="sy1"><></span> <span class="kw1">struct</span> hash<span class="sy1"><</span><span class="kw4">char</span><span class="sy1">></span><span class="sy4">;</span><br />
<span class="kw1">template</span><span class="sy1"><></span> <span class="kw1">struct</span> hash<span class="sy1"><</span><span class="kw4">signed</span> <span class="kw4">char</span><span class="sy1">></span><span class="sy4">;</span><br />
<span class="kw1">template</span><span class="sy1"><></span> <span class="kw1">struct</span> hash<span class="sy1"><</span><span class="kw4">unsigned</span> <span class="kw4">char</span><span class="sy1">></span><span class="sy4">;</span><br />
<span class="kw1">template</span><span class="sy1"><></span> <span class="kw1">struct</span> hash<span class="sy1"><</span><span class="kw4">char16_t</span><span class="sy1">></span><span class="sy4">;</span><br />
<span class="kw1">template</span><span class="sy1"><></span> <span class="kw1">struct</span> hash<span class="sy1"><</span><span class="kw4">char32_t</span><span class="sy1">></span><span class="sy4">;</span><br />
<span class="kw1">template</span><span class="sy1"><></span> <span class="kw1">struct</span> hash<span class="sy1"><</span><span class="kw4">wchar_t</span><span class="sy1">></span><span class="sy4">;</span><br />
<span class="kw1">template</span><span class="sy1"><></span> <span class="kw1">struct</span> hash<span class="sy1"><</span><span class="kw4">short</span><span class="sy1">></span><span class="sy4">;</span><br />
<span class="kw1">template</span><span class="sy1"><></span> <span class="kw1">struct</span> hash<span class="sy1"><</span><span class="kw4">unsigned</span> <span class="kw4">short</span><span class="sy1">></span><span class="sy4">;</span><br />
<span class="kw1">template</span><span class="sy1"><></span> <span class="kw1">struct</span> hash<span class="sy1"><</span><span class="kw4">int</span><span class="sy1">></span><span class="sy4">;</span><br />
<span class="kw1">template</span><span class="sy1"><></span> <span class="kw1">struct</span> hash<span class="sy1"><</span><span class="kw4">unsigned</span> <span class="kw4">int</span><span class="sy1">></span><span class="sy4">;</span><br />
<span class="kw1">template</span><span class="sy1"><></span> <span class="kw1">struct</span> hash<span class="sy1"><</span><span class="kw4">long</span><span class="sy1">></span><span class="sy4">;</span><br />
<span class="kw1">template</span><span class="sy1"><></span> <span class="kw1">struct</span> hash<span class="sy1"><</span><span class="kw4">long</span> <span class="kw4">long</span><span class="sy1">></span><span class="sy4">;</span><br />
<span class="kw1">template</span><span class="sy1"><></span> <span class="kw1">struct</span> hash<span class="sy1"><</span><span class="kw4">unsigned</span> <span class="kw4">long</span><span class="sy1">></span><span class="sy4">;</span><br />
<span class="kw1">template</span><span class="sy1"><></span> <span class="kw1">struct</span> hash<span class="sy1"><</span><span class="kw4">unsigned</span> <span class="kw4">long</span> <span class="kw4">long</span><span class="sy1">></span><span class="sy4">;</span><br />
<span class="kw1">template</span><span class="sy1"><></span> <span class="kw1">struct</span> hash<span class="sy1"><</span><span class="kw4">float</span><span class="sy1">></span><span class="sy4">;</span><br />
<span class="kw1">template</span><span class="sy1"><></span> <span class="kw1">struct</span> hash<span class="sy1"><</span><span class="kw4">double</span><span class="sy1">></span><span class="sy4">;</span><br />
<span class="kw1">template</span><span class="sy1"><></span> <span class="kw1">struct</span> hash<span class="sy1"><</span><span class="kw4">long</span> <span class="kw4">double</span><span class="sy1">></span><span class="sy4">;</span><br />
<span class="kw1">template</span><span class="sy1"><</span> <span class="kw1">class</span> T <span class="sy1">></span> <span class="kw1">struct</span> hash<span class="sy1"><</span>T<span class="sy2">*</span><span class="sy1">></span><span class="sy4">;</span></span></span>
</p>
</td>
<td> <span class="t-lc"><a href="../utility/hash.html" title="cpp/utility/hash">std::hash</a></span> specializations for built-in types <br /> <span class="t-mark">(class template specialization)</span>
</td></tr>
</table>
<p><br />
</p>
<h3><span class="editsection">[<a href="http://en.cppreference.com/mwiki/index.php?title=cpp/header/functional&action=edit&section=3" title="Edit section: Functions">edit</a>]</span> <span class="mw-headline" id="Functions">Functions</span></h3>
<table class="t-dsc-begin">
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="../utility/functional/bind.html" title="cpp/utility/functional/bind"> <span class="t-lines"><span>bind</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div>
</td>
<td> binds one or more arguments to a function object <br /> <span class="t-mark">(function template)</span> <span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:cpp/utility/functional/dsc_bind&action=edit">[edit]</a></span>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="../utility/functional/ref.html" title="cpp/utility/functional/ref"> <span class="t-lines"><span>ref</span><span>cref</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div>
</td>
<td> creates a <span class="t-lc"><a href="../utility/functional/reference_wrapper.html" title="cpp/utility/functional/reference wrapper">std::reference_wrapper</a></span> with a type deduced from its argument <br /> <span class="t-mark">(function template)</span> <span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:cpp/utility/functional/dsc_ref&action=edit">[edit]</a></span>
</td></tr>
</table>
<p><br />
</p>
<h3><span class="editsection">[<a href="http://en.cppreference.com/mwiki/index.php?title=cpp/header/functional&action=edit&section=4" title="Edit section: Function Objects">edit</a>]</span> <span class="mw-headline" id="Function_Objects">Function Objects</span></h3>
<table class="t-dsc-begin">
<tr>
<td colspan="2"> <h5> <span class="mw-headline" id="Arithmetic_operations"> Arithmetic operations </span></h5>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="../utility/functional/plus.html" title="cpp/utility/functional/plus"> <span class="t-lines"><span>plus</span></span></a></div></div>
</td>
<td> function object implementing <span class="t-c"><span class="mw-geshi cpp source-cpp">x <span class="sy2">+</span> y</span></span> <br /> <span class="t-mark">(class template)</span> <span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:cpp/utility/functional/dsc_plus&action=edit">[edit]</a></span>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="../utility/functional/minus.html" title="cpp/utility/functional/minus"> <span class="t-lines"><span>minus</span></span></a></div></div>
</td>
<td> function object implementing <span class="t-c"><span class="mw-geshi cpp source-cpp">x <span class="sy2">-</span> y</span></span> <br /> <span class="t-mark">(class template)</span> <span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:cpp/utility/functional/dsc_minus&action=edit">[edit]</a></span>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="../utility/functional/multiplies.html" title="cpp/utility/functional/multiplies"> <span class="t-lines"><span>multiplies</span></span></a></div></div>
</td>
<td> function object implementing <span class="t-c"><span class="mw-geshi cpp source-cpp">x <span class="sy2">*</span> y</span></span> <br /> <span class="t-mark">(class template)</span> <span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:cpp/utility/functional/dsc_multiplies&action=edit">[edit]</a></span>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="../utility/functional/divides.html" title="cpp/utility/functional/divides"> <span class="t-lines"><span>divides</span></span></a></div></div>
</td>
<td> function object implementing <span class="t-c"><span class="mw-geshi cpp source-cpp">x <span class="sy2">/</span> y</span></span> <br /> <span class="t-mark">(class template)</span> <span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:cpp/utility/functional/dsc_divides&action=edit">[edit]</a></span>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="../utility/functional/modulus.html" title="cpp/utility/functional/modulus"> <span class="t-lines"><span>modulus</span></span></a></div></div>
</td>
<td> function object implementing <span class="t-c"><span class="mw-geshi cpp source-cpp">x <span class="sy2">%</span> y</span></span> <br /> <span class="t-mark">(class template)</span> <span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:cpp/utility/functional/dsc_modulus&action=edit">[edit]</a></span>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="../utility/functional/negate.html" title="cpp/utility/functional/negate"> <span class="t-lines"><span>negate</span></span></a></div></div>
</td>
<td> function object implementing <span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="sy2">-</span>x</span></span> <br /> <span class="t-mark">(class template)</span> <span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:cpp/utility/functional/dsc_negate&action=edit">[edit]</a></span>
</td></tr>
<tr>
<td colspan="2"> <h5> <span class="mw-headline" id="Comparisons"> Comparisons </span></h5>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="../utility/functional/equal_to.html" title="cpp/utility/functional/equal to"> <span class="t-lines"><span>equal_to</span></span></a></div></div>
</td>
<td> function object implementing <span class="t-c"><span class="mw-geshi cpp source-cpp">x <span class="sy1">==</span> y</span></span> <br /> <span class="t-mark">(class template)</span> <span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:cpp/utility/functional/dsc_equal_to&action=edit">[edit]</a></span>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="../utility/functional/not_equal_to.html" title="cpp/utility/functional/not equal to"> <span class="t-lines"><span>not_equal_to</span></span></a></div></div>
</td>
<td> function object implementing <span class="t-c"><span class="mw-geshi cpp source-cpp">x <span class="sy3">!</span><span class="sy1">=</span> y</span></span> <br /> <span class="t-mark">(class template)</span> <span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:cpp/utility/functional/dsc_not_equal_to&action=edit">[edit]</a></span>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="../utility/functional/greater.html" title="cpp/utility/functional/greater"> <span class="t-lines"><span>greater</span></span></a></div></div>
</td>
<td> function object implementing <span class="t-c"><span class="mw-geshi cpp source-cpp">x <span class="sy1">></span> y</span></span> <br /> <span class="t-mark">(class template)</span> <span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:cpp/utility/functional/dsc_greater&action=edit">[edit]</a></span>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="../utility/functional/less.html" title="cpp/utility/functional/less"> <span class="t-lines"><span>less</span></span></a></div></div>
</td>
<td> function object implementing <span class="t-c"><span class="mw-geshi cpp source-cpp">x <span class="sy1"><</span> y</span></span> <br /> <span class="t-mark">(class template)</span> <span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:cpp/utility/functional/dsc_less&action=edit">[edit]</a></span>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="../utility/functional/greater_equal.html" title="cpp/utility/functional/greater equal"> <span class="t-lines"><span>greater_equal</span></span></a></div></div>
</td>
<td> function object implementing <span class="t-c"><span class="mw-geshi cpp source-cpp">x <span class="sy1">>=</span> y</span></span> <br /> <span class="t-mark">(class template)</span> <span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:cpp/utility/functional/dsc_greater_equal&action=edit">[edit]</a></span>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="../utility/functional/less_equal.html" title="cpp/utility/functional/less equal"> <span class="t-lines"><span>less_equal</span></span></a></div></div>
</td>
<td> function object implementing <span class="t-c"><span class="mw-geshi cpp source-cpp">x <span class="sy1"><=</span> y</span></span> <br /> <span class="t-mark">(class template)</span> <span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:cpp/utility/functional/dsc_less_equal&action=edit">[edit]</a></span>
</td></tr>
<tr>
<td colspan="2"> <h5> <span class="mw-headline" id="Logical_operations"> Logical operations </span></h5>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="../utility/functional/logical_and.html" title="cpp/utility/functional/logical and"> <span class="t-lines"><span>logical_and</span></span></a></div></div>
</td>
<td> function object implementing <span class="t-c"><span class="mw-geshi cpp source-cpp">x <span class="sy3">&&</span> y</span></span> <br /> <span class="t-mark">(class template)</span> <span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:cpp/utility/functional/dsc_logical_and&action=edit">[edit]</a></span>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="../utility/functional/logical_or.html" title="cpp/utility/functional/logical or"> <span class="t-lines"><span>logical_or</span></span></a></div></div>
</td>
<td> function object implementing <span class="t-c"><span class="mw-geshi cpp source-cpp">x <span class="sy3">||</span> y</span></span> <br /> <span class="t-mark">(class template)</span> <span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:cpp/utility/functional/dsc_logical_or&action=edit">[edit]</a></span>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="../utility/functional/logical_not.html" title="cpp/utility/functional/logical not"> <span class="t-lines"><span>logical_not</span></span></a></div></div>
</td>
<td> function object implementing <span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="sy3">!</span>x</span></span> <br /> <span class="t-mark">(class template)</span> <span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:cpp/utility/functional/dsc_logical_not&action=edit">[edit]</a></span>
</td></tr>
<tr>
<td colspan="2"> <h5> <span class="mw-headline" id="Bitwise_operations"> Bitwise operations </span></h5>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="../utility/functional/bit_and.html" title="cpp/utility/functional/bit and"> <span class="t-lines"><span>bit_and</span></span></a></div></div>
</td>
<td> function object implementing <span class="t-c"><span class="mw-geshi cpp source-cpp">x <span class="sy3">&</span> y</span></span> <br /> <span class="t-mark">(class template)</span> <span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:cpp/utility/functional/dsc_bit_and&action=edit">[edit]</a></span>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="../utility/functional/bit_or.html" title="cpp/utility/functional/bit or"> <span class="t-lines"><span>bit_or</span></span></a></div></div>
</td>
<td> function object implementing <span class="t-c"><span class="mw-geshi cpp source-cpp">x <span class="sy3">|</span> y</span></span> <br /> <span class="t-mark">(class template)</span> <span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:cpp/utility/functional/dsc_bit_or&action=edit">[edit]</a></span>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="../utility/functional/bit_xor.html" title="cpp/utility/functional/bit xor"> <span class="t-lines"><span>bit_xor</span></span></a></div></div>
</td>
<td> function object implementing <span class="t-c"><span class="mw-geshi cpp source-cpp">x <span class="sy3">^</span> y</span></span> <br /> <span class="t-mark">(class template)</span> <span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:cpp/utility/functional/dsc_bit_xor&action=edit">[edit]</a></span>
</td></tr>
<tr>
<td colspan="2"> <h5> <span class="mw-headline" id="Negators"> Negators </span></h5>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="../utility/functional/unary_negate.html" title="cpp/utility/functional/unary negate"> <span class="t-lines"><span>unary_negate</span></span></a></div></div>
</td>
<td> wrapper function object returning the complement of the unary predicate it holds <br /> <span class="t-mark">(class template)</span> <span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:cpp/utility/functional/dsc_unary_negate&action=edit">[edit]</a></span>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="../utility/functional/binary_negate.html" title="cpp/utility/functional/binary negate"> <span class="t-lines"><span>binary_negate</span></span></a></div></div>
</td>
<td> wrapper function object returning the complement of the binary predicate it holds <br /> <span class="t-mark">(class template)</span> <span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:cpp/utility/functional/dsc_binary_negate&action=edit">[edit]</a></span>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="../utility/functional/not1.html" title="cpp/utility/functional/not1"> <span class="t-lines"><span>not1</span></span></a></div></div>
</td>
<td> constructs custom <span class="t-lc"><a href="../utility/functional/unary_negate.html" title="cpp/utility/functional/unary negate">std::unary_negate</a></span> object <br /> <span class="t-mark">(function template)</span> <span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:cpp/utility/functional/dsc_not1&action=edit">[edit]</a></span>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="../utility/functional/not2.html" title="cpp/utility/functional/not2"> <span class="t-lines"><span>not2</span></span></a></div></div>
</td>
<td> constructs custom <span class="t-lc"><a href="../utility/functional/binary_negate.html" title="cpp/utility/functional/binary negate">std::binary_negate</a></span> object <br /> <span class="t-mark">(function template)</span> <span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:cpp/utility/functional/dsc_not2&action=edit">[edit]</a></span>
</td></tr>
</table>
<h3><span class="editsection">[<a href="http://en.cppreference.com/mwiki/index.php?title=cpp/header/functional&action=edit&section=5" title="Edit section: Deprecated in C++11">edit</a>]</span> <span class="mw-headline" id="Deprecated_in_C.2B.2B11">Deprecated in C++11</span></h3>
<table class="t-dsc-begin">
<tr>
<td colspan="2"> <h5> <span class="mw-headline" id="Base"> Base </span></h5>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="../utility/functional/unary_function.html" title="cpp/utility/functional/unary function"> <span class="t-lines"><span>unary_function</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-until-cxx17">(until C++17)</span></span></span></div></div>
</td>
<td> adaptor-compatible unary function base class <br /> <span class="t-mark">(class template)</span> <span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:cpp/utility/functional/dsc_unary_function&action=edit">[edit]</a></span>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="../utility/functional/binary_function.html" title="cpp/utility/functional/binary function"> <span class="t-lines"><span>binary_function</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-until-cxx17">(until C++17)</span></span></span></div></div>
</td>
<td> adaptor-compatible binary function base class <br /> <span class="t-mark">(class template)</span> <span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:cpp/utility/functional/dsc_binary_function&action=edit">[edit]</a></span>
</td></tr>
<tr>
<td colspan="2"> <h5> <span class="mw-headline" id="Binders"> Binders </span></h5>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="../utility/functional/binder12.html" title="cpp/utility/functional/binder12"> <span class="t-lines"><span>binder1st</span><span>binder2nd</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-until-cxx17">(until C++17)</span></span><span><span class="t-mark-rev t-until-cxx17">(until C++17)</span></span></span></div></div>
</td>
<td> function object holding a binary function and one of its arguments <br /> <span class="t-mark">(class template)</span> <span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:cpp/utility/functional/dsc_binder12&action=edit">[edit]</a></span>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="../utility/functional/bind12.html" title="cpp/utility/functional/bind12"> <span class="t-lines"><span>bind1st</span><span>bind2nd</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-until-cxx17">(until C++17)</span></span><span><span class="t-mark-rev t-until-cxx17">(until C++17)</span></span></span></div></div>
</td>
<td> binds one argument to a binary function <br /> <span class="t-mark">(function template)</span> <span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:cpp/utility/functional/dsc_bind12&action=edit">[edit]</a></span>
</td></tr>
<tr>
<td colspan="2"> <h5> <span class="mw-headline" id="Function_adaptors"> Function adaptors </span></h5>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="../utility/functional/pointer_to_unary_function.html" title="cpp/utility/functional/pointer to unary function"> <span class="t-lines"><span>pointer_to_unary_function</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-until-cxx17">(until C++17)</span></span></span></div></div>
</td>
<td> adaptor-compatible wrapper for a pointer to unary function <br /> <span class="t-mark">(class template)</span> <span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:cpp/utility/functional/dsc_pointer_to_unary_function&action=edit">[edit]</a></span>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="../utility/functional/pointer_to_binary_function.html" title="cpp/utility/functional/pointer to binary function"> <span class="t-lines"><span>pointer_to_binary_function</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-until-cxx17">(until C++17)</span></span></span></div></div>
</td>
<td> adaptor-compatible wrapper for a pointer to binary function <br /> <span class="t-mark">(class template)</span> <span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:cpp/utility/functional/dsc_pointer_to_binary_function&action=edit">[edit]</a></span>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="../utility/functional/ptr_fun.html" title="cpp/utility/functional/ptr fun"> <span class="t-lines"><span>ptr_fun</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-until-cxx17">(until C++17)</span></span></span></div></div>
</td>
<td> creates an adaptor-compatible function object wrapper from a pointer to function <br /> <span class="t-mark">(function template)</span> <span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:cpp/utility/functional/dsc_ptr_fun&action=edit">[edit]</a></span>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="../utility/functional/mem_fun_t.html" title="cpp/utility/functional/mem fun t"> <span class="t-lines"><span>mem_fun_t</span><span>mem_fun1_t</span><span>const_mem_fun_t</span><span>const_mem_fun1_t</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-until-cxx17">(until C++17)</span></span><span><span class="t-mark-rev t-until-cxx17">(until C++17)</span></span><span><span class="t-mark-rev t-until-cxx17">(until C++17)</span></span><span><span class="t-mark-rev t-until-cxx17">(until C++17)</span></span></span></div></div>
</td>
<td> wrapper for a pointer to nullary or unary member function, callable with a pointer to object <br /> <span class="t-mark">(class template)</span> <span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:cpp/utility/functional/dsc_mem_fun_t&action=edit">[edit]</a></span>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="../utility/functional/mem_fun.html" title="cpp/utility/functional/mem fun"> <span class="t-lines"><span>mem_fun</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-until-cxx17">(until C++17)</span></span></span></div></div>
</td>
<td> creates a wrapper from a pointer to member function, callable with a pointer to object <br /> <span class="t-mark">(function template)</span> <span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:cpp/utility/functional/dsc_mem_fun&action=edit">[edit]</a></span>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="../utility/functional/mem_fun_ref_t.html" title="cpp/utility/functional/mem fun ref t"> <span class="t-lines"><span>mem_fun_ref_t</span><span>mem_fun1_ref_t</span><span>const_mem_fun_ref_t</span><span>const_mem_fun1_ref_t</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-until-cxx17">(until C++17)</span></span><span><span class="t-mark-rev t-until-cxx17">(until C++17)</span></span><span><span class="t-mark-rev t-until-cxx17">(until C++17)</span></span><span><span class="t-mark-rev t-until-cxx17">(until C++17)</span></span></span></div></div>
</td>
<td> wrapper for a pointer to nullary or unary member function, callable with a reference to object <br /> <span class="t-mark">(class template)</span> <span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:cpp/utility/functional/dsc_mem_fun_ref_t&action=edit">[edit]</a></span>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="../utility/functional/mem_fun_ref.html" title="cpp/utility/functional/mem fun ref"> <span class="t-lines"><span>mem_fun_ref</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-until-cxx17">(until C++17)</span></span></span></div></div>
</td>
<td> creates a wrapper from a pointer to member function, callable with a reference to object <br /> <span class="t-mark">(function template)</span> <span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:cpp/utility/functional/dsc_mem_fun_ref&action=edit">[edit]</a></span>
</td></tr>
</table>
<h3><span class="editsection">[<a href="http://en.cppreference.com/mwiki/index.php?title=cpp/header/functional&action=edit&section=6" title="Edit section: Synopsis">edit</a>]</span> <span class="mw-headline" id="Synopsis">Synopsis</span></h3>
<div dir="ltr" class="mw-geshi" style="text-align: left;"><div class="cpp source-cpp"><pre class="de1"><span class="kw1">namespace</span> std <span class="br0">{</span>
 
<span class="co1">// base (deprecated):</span>
<span class="kw1">template</span> <span class="sy1"><</span><span class="kw1">class</span> Arg, <span class="kw1">class</span> Result<span class="sy1">></span> <span class="kw1">struct</span> unary_function<span class="sy4">;</span>
<span class="kw1">template</span> <span class="sy1"><</span><span class="kw1">class</span> Arg1, <span class="kw1">class</span> Arg2, <span class="kw1">class</span> Result<span class="sy1">></span> <span class="kw1">struct</span> binary_function<span class="sy4">;</span>
 
<span class="co1">// reference_wrapper:</span>
<span class="kw1">template</span> <span class="sy1"><</span><span class="kw1">class</span> T<span class="sy1">></span> <span class="kw1">class</span> reference_wrapper<span class="sy4">;</span>
<span class="kw1">template</span> <span class="sy1"><</span><span class="kw1">class</span> T<span class="sy1">></span> reference_wrapper<span class="sy1"><</span>T<span class="sy1">></span> ref<span class="br0">(</span>T<span class="sy3">&</span><span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
<span class="kw1">template</span> <span class="sy1"><</span><span class="kw1">class</span> T<span class="sy1">></span> reference_wrapper<span class="sy1"><</span><span class="kw4">const</span> T<span class="sy1">></span> cref<span class="br0">(</span><span class="kw4">const</span> T<span class="sy3">&</span><span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
<span class="kw1">template</span> <span class="sy1"><</span><span class="kw1">class</span> T<span class="sy1">></span> <span class="kw4">void</span> ref<span class="br0">(</span><span class="kw4">const</span> T<span class="sy3">&&</span><span class="br0">)</span> <span class="sy1">=</span> delete<span class="sy4">;</span>
<span class="kw1">template</span> <span class="sy1"><</span><span class="kw1">class</span> T<span class="sy1">></span> <span class="kw4">void</span> cref<span class="br0">(</span><span class="kw4">const</span> T<span class="sy3">&&</span><span class="br0">)</span> <span class="sy1">=</span> delete<span class="sy4">;</span>
<span class="kw1">template</span> <span class="sy1"><</span><span class="kw1">class</span> T<span class="sy1">></span> reference_wrapper<span class="sy1"><</span>T<span class="sy1">></span> ref<span class="br0">(</span>reference_wrapper<span class="sy1"><</span>T<span class="sy1">></span><span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
<span class="kw1">template</span> <span class="sy1"><</span><span class="kw1">class</span> T<span class="sy1">></span> reference_wrapper<span class="sy1"><</span><span class="kw4">const</span> T<span class="sy1">></span> cref<span class="br0">(</span>reference_wrapper<span class="sy1"><</span>T<span class="sy1">></span><span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
 
<span class="co1">// arithmetic operations:</span>
<span class="kw1">template</span> <span class="sy1"><</span><span class="kw1">class</span> T<span class="sy1">></span> <span class="kw1">struct</span> plus<span class="sy4">;</span>
<span class="kw1">template</span> <span class="sy1"><</span><span class="kw1">class</span> T<span class="sy1">></span> <span class="kw1">struct</span> minus<span class="sy4">;</span>
<span class="kw1">template</span> <span class="sy1"><</span><span class="kw1">class</span> T<span class="sy1">></span> <span class="kw1">struct</span> multiplies<span class="sy4">;</span>
<span class="kw1">template</span> <span class="sy1"><</span><span class="kw1">class</span> T<span class="sy1">></span> <span class="kw1">struct</span> divides<span class="sy4">;</span>
<span class="kw1">template</span> <span class="sy1"><</span><span class="kw1">class</span> T<span class="sy1">></span> <span class="kw1">struct</span> modulus<span class="sy4">;</span>
<span class="kw1">template</span> <span class="sy1"><</span><span class="kw1">class</span> T<span class="sy1">></span> <span class="kw1">struct</span> negate<span class="sy4">;</span>
 
<span class="co1">// comparisons:</span>
<span class="kw1">template</span> <span class="sy1"><</span><span class="kw1">class</span> T<span class="sy1">></span> <span class="kw1">struct</span> equal_to<span class="sy4">;</span>
<span class="kw1">template</span> <span class="sy1"><</span><span class="kw1">class</span> T<span class="sy1">></span> <span class="kw1">struct</span> not_equal_to<span class="sy4">;</span>
<span class="kw1">template</span> <span class="sy1"><</span><span class="kw1">class</span> T<span class="sy1">></span> <span class="kw1">struct</span> greater<span class="sy4">;</span>
<span class="kw1">template</span> <span class="sy1"><</span><span class="kw1">class</span> T<span class="sy1">></span> <span class="kw1">struct</span> less<span class="sy4">;</span>
<span class="kw1">template</span> <span class="sy1"><</span><span class="kw1">class</span> T<span class="sy1">></span> <span class="kw1">struct</span> greater_equal<span class="sy4">;</span>
<span class="kw1">template</span> <span class="sy1"><</span><span class="kw1">class</span> T<span class="sy1">></span> <span class="kw1">struct</span> less_equal<span class="sy4">;</span>
 
<span class="co1">// logical operations:</span>
<span class="kw1">template</span> <span class="sy1"><</span><span class="kw1">class</span> T<span class="sy1">></span> <span class="kw1">struct</span> logical_and<span class="sy4">;</span>
<span class="kw1">template</span> <span class="sy1"><</span><span class="kw1">class</span> T<span class="sy1">></span> <span class="kw1">struct</span> logical_or<span class="sy4">;</span>
<span class="kw1">template</span> <span class="sy1"><</span><span class="kw1">class</span> T<span class="sy1">></span> <span class="kw1">struct</span> logical_not<span class="sy4">;</span>
 
<span class="co1">// bitwise operations:</span>
<span class="kw1">template</span> <span class="sy1"><</span><span class="kw1">class</span> T<span class="sy1">></span> <span class="kw1">struct</span> bit_and<span class="sy4">;</span>
<span class="kw1">template</span> <span class="sy1"><</span><span class="kw1">class</span> T<span class="sy1">></span> <span class="kw1">struct</span> bit_or<span class="sy4">;</span>
<span class="kw1">template</span> <span class="sy1"><</span><span class="kw1">class</span> T<span class="sy1">></span> <span class="kw1">struct</span> bit_xor<span class="sy4">;</span>
 
<span class="co1">// negators:</span>
<span class="kw1">template</span> <span class="sy1"><</span><span class="kw1">class</span> Predicate<span class="sy1">></span> <span class="kw1">class</span> unary_negate<span class="sy4">;</span>
<span class="kw1">template</span> <span class="sy1"><</span><span class="kw1">class</span> Predicate<span class="sy1">></span>
unary_negate<span class="sy1"><</span>Predicate<span class="sy1">></span>
not1<span class="br0">(</span><span class="kw4">const</span> Predicate<span class="sy3">&</span><span class="br0">)</span><span class="sy4">;</span>
<span class="kw1">template</span> <span class="sy1"><</span><span class="kw1">class</span> Predicate<span class="sy1">></span> <span class="kw1">class</span> binary_negate<span class="sy4">;</span>
<span class="kw1">template</span> <span class="sy1"><</span><span class="kw1">class</span> Predicate<span class="sy1">></span>
binary_negate<span class="sy1"><</span>Predicate<span class="sy1">></span>
not2<span class="br0">(</span><span class="kw4">const</span> Predicate<span class="sy3">&</span><span class="br0">)</span><span class="sy4">;</span>
 
<span class="co1">// bind:</span>
<span class="kw1">template</span><span class="sy1"><</span><span class="kw1">class</span> T<span class="sy1">></span> <span class="kw1">struct</span> is_bind_expression<span class="sy4">;</span>
<span class="kw1">template</span><span class="sy1"><</span><span class="kw1">class</span> T<span class="sy1">></span> <span class="kw1">struct</span> is_placeholder<span class="sy4">;</span>
<span class="kw1">template</span><span class="sy1"><</span><span class="kw1">class</span> F, <span class="kw1">class</span>... <span class="me1">BoundArgs</span><span class="sy1">></span>
<span class="coMULTI">/*unspecified*/</span> bind<span class="br0">(</span>F<span class="sy3">&&</span>, BoundArgs<span class="sy3">&&</span>...<span class="br0">)</span><span class="sy4">;</span>
<span class="kw1">template</span><span class="sy1"><</span><span class="kw1">class</span> R, <span class="kw1">class</span> F, <span class="kw1">class</span>... <span class="me1">BoundArgs</span><span class="sy1">></span>
<span class="coMULTI">/*unspecified*/</span> bind<span class="br0">(</span>F<span class="sy3">&&</span>, BoundArgs<span class="sy3">&&</span>...<span class="br0">)</span><span class="sy4">;</span>
 
<span class="kw1">namespace</span> placeholders <span class="br0">{</span>
<span class="co1">// M is the implementation-defined number of placeholders</span>
<span class="kw4">extern</span> <span class="coMULTI">/*unspecified*/</span> _1<span class="sy4">;</span>
<span class="kw4">extern</span> <span class="coMULTI">/*unspecified*/</span> _2<span class="sy4">;</span>
.
.
.
<span class="kw4">extern</span> <span class="coMULTI">/*unspecified*/</span> _M<span class="sy4">;</span>
<span class="br0">}</span>
 
<span class="co1">// binders (deprecated):</span>
<span class="kw1">template</span> <span class="sy1"><</span><span class="kw1">class</span> Fn<span class="sy1">></span> <span class="kw1">class</span> binder1st<span class="sy4">;</span>
<span class="kw1">template</span> <span class="sy1"><</span><span class="kw1">class</span> Fn, <span class="kw1">class</span> T<span class="sy1">></span>
binder1st<span class="sy1"><</span>Fn<span class="sy1">></span> bind1st<span class="br0">(</span><span class="kw4">const</span> Fn<span class="sy3">&</span>, <span class="kw4">const</span> T<span class="sy3">&</span><span class="br0">)</span><span class="sy4">;</span>
<span class="kw1">template</span> <span class="sy1"><</span><span class="kw1">class</span> Fn<span class="sy1">></span> <span class="kw1">class</span> binder2nd<span class="sy4">;</span>
<span class="kw1">template</span> <span class="sy1"><</span><span class="kw1">class</span> Fn, <span class="kw1">class</span> T<span class="sy1">></span>
binder2nd<span class="sy1"><</span>Fn<span class="sy1">></span> bind2nd<span class="br0">(</span><span class="kw4">const</span> Fn<span class="sy3">&</span>, <span class="kw4">const</span> T<span class="sy3">&</span><span class="br0">)</span><span class="sy4">;</span>
 
<span class="co1">// adaptors (deprecated):</span>
<span class="kw1">template</span> <span class="sy1"><</span><span class="kw1">class</span> Arg, <span class="kw1">class</span> Result<span class="sy1">></span> <span class="kw1">class</span> pointer_to_unary_function<span class="sy4">;</span>
<span class="kw1">template</span> <span class="sy1"><</span><span class="kw1">class</span> Arg, <span class="kw1">class</span> Result<span class="sy1">></span>
pointer_to_unary_function<span class="sy1"><</span>Arg,Result<span class="sy1">></span> ptr_fun<span class="br0">(</span>Result <span class="br0">(</span><span class="sy2">*</span><span class="br0">)</span><span class="br0">(</span>Arg<span class="br0">)</span><span class="br0">)</span><span class="sy4">;</span>
<span class="kw1">template</span> <span class="sy1"><</span><span class="kw1">class</span> Arg1, <span class="kw1">class</span> Arg2, <span class="kw1">class</span> Result<span class="sy1">></span>
<span class="kw1">class</span> pointer_to_binary_function<span class="sy4">;</span>
<span class="kw1">template</span> <span class="sy1"><</span><span class="kw1">class</span> Arg1, <span class="kw1">class</span> Arg2, <span class="kw1">class</span> Result<span class="sy1">></span>
pointer_to_binary_function<span class="sy1"><</span>Arg1,Arg2,Result<span class="sy1">></span>
ptr_fun<span class="br0">(</span>Result <span class="br0">(</span><span class="sy2">*</span><span class="br0">)</span><span class="br0">(</span>Arg1,Arg2<span class="br0">)</span><span class="br0">)</span><span class="sy4">;</span>
 
<span class="co1">// adaptors (deprecated):</span>
<span class="kw1">template</span><span class="sy1"><</span><span class="kw1">class</span> S, <span class="kw1">class</span> T<span class="sy1">></span> <span class="kw1">class</span> mem_fun_t<span class="sy4">;</span>
<span class="kw1">template</span><span class="sy1"><</span><span class="kw1">class</span> S, <span class="kw1">class</span> T, <span class="kw1">class</span> A<span class="sy1">></span> <span class="kw1">class</span> mem_fun1_t<span class="sy4">;</span>
<span class="kw1">template</span><span class="sy1"><</span><span class="kw1">class</span> S, <span class="kw1">class</span> T<span class="sy1">></span>
mem_fun_t<span class="sy1"><</span>S,T<span class="sy1">></span> mem_fun<span class="br0">(</span>S <span class="br0">(</span>T<span class="sy4">::</span><span class="sy2">*</span>f<span class="br0">)</span><span class="br0">(</span><span class="br0">)</span><span class="br0">)</span><span class="sy4">;</span>
<span class="kw1">template</span><span class="sy1"><</span><span class="kw1">class</span> S, <span class="kw1">class</span> T, <span class="kw1">class</span> A<span class="sy1">></span>
mem_fun1_t<span class="sy1"><</span>S,T,A<span class="sy1">></span> mem_fun<span class="br0">(</span>S <span class="br0">(</span>T<span class="sy4">::</span><span class="sy2">*</span>f<span class="br0">)</span><span class="br0">(</span>A<span class="br0">)</span><span class="br0">)</span><span class="sy4">;</span>
<span class="kw1">template</span><span class="sy1"><</span><span class="kw1">class</span> S, <span class="kw1">class</span> T<span class="sy1">></span> <span class="kw1">class</span> mem_fun_ref_t<span class="sy4">;</span>
<span class="kw1">template</span><span class="sy1"><</span><span class="kw1">class</span> S, <span class="kw1">class</span> T, <span class="kw1">class</span> A<span class="sy1">></span> <span class="kw1">class</span> mem_fun1_ref_t<span class="sy4">;</span>
<span class="kw1">template</span><span class="sy1"><</span><span class="kw1">class</span> S, <span class="kw1">class</span> T<span class="sy1">></span>
mem_fun_ref_t<span class="sy1"><</span>S,T<span class="sy1">></span> mem_fun_ref<span class="br0">(</span>S <span class="br0">(</span>T<span class="sy4">::</span><span class="sy2">*</span>f<span class="br0">)</span><span class="br0">(</span><span class="br0">)</span><span class="br0">)</span><span class="sy4">;</span>
<span class="kw1">template</span><span class="sy1"><</span><span class="kw1">class</span> S, <span class="kw1">class</span> T, <span class="kw1">class</span> A<span class="sy1">></span>
mem_fun1_ref_t<span class="sy1"><</span>S,T,A<span class="sy1">></span> mem_fun_ref<span class="br0">(</span>S <span class="br0">(</span>T<span class="sy4">::</span><span class="sy2">*</span>f<span class="br0">)</span><span class="br0">(</span>A<span class="br0">)</span><span class="br0">)</span><span class="sy4">;</span>
<span class="kw1">template</span> <span class="sy1"><</span><span class="kw1">class</span> S, <span class="kw1">class</span> T<span class="sy1">></span> <span class="kw1">class</span> const_mem_fun_t<span class="sy4">;</span>
<span class="kw1">template</span> <span class="sy1"><</span><span class="kw1">class</span> S, <span class="kw1">class</span> T, <span class="kw1">class</span> A<span class="sy1">></span> <span class="kw1">class</span> const_mem_fun1_t<span class="sy4">;</span>
<span class="kw1">template</span> <span class="sy1"><</span><span class="kw1">class</span> S, <span class="kw1">class</span> T<span class="sy1">></span>
const_mem_fun_t<span class="sy1"><</span>S,T<span class="sy1">></span> mem_fun<span class="br0">(</span>S <span class="br0">(</span>T<span class="sy4">::</span><span class="sy2">*</span>f<span class="br0">)</span><span class="br0">(</span><span class="br0">)</span> <span class="kw4">const</span><span class="br0">)</span><span class="sy4">;</span>
<span class="kw1">template</span> <span class="sy1"><</span><span class="kw1">class</span> S, <span class="kw1">class</span> T, <span class="kw1">class</span> A<span class="sy1">></span>
const_mem_fun1_t<span class="sy1"><</span>S,T,A<span class="sy1">></span> mem_fun<span class="br0">(</span>S <span class="br0">(</span>T<span class="sy4">::</span><span class="sy2">*</span>f<span class="br0">)</span><span class="br0">(</span>A<span class="br0">)</span> <span class="kw4">const</span><span class="br0">)</span><span class="sy4">;</span>
<span class="kw1">template</span> <span class="sy1"><</span><span class="kw1">class</span> S, <span class="kw1">class</span> T<span class="sy1">></span> <span class="kw1">class</span> const_mem_fun_ref_t<span class="sy4">;</span>
<span class="kw1">template</span> <span class="sy1"><</span><span class="kw1">class</span> S, <span class="kw1">class</span> T, <span class="kw1">class</span> A<span class="sy1">></span> <span class="kw1">class</span> const_mem_fun1_ref_t<span class="sy4">;</span>
<span class="kw1">template</span> <span class="sy1"><</span><span class="kw1">class</span> S, <span class="kw1">class</span> T<span class="sy1">></span>
const_mem_fun_ref_t<span class="sy1"><</span>S,T<span class="sy1">></span> mem_fun_ref<span class="br0">(</span>S <span class="br0">(</span>T<span class="sy4">::</span><span class="sy2">*</span>f<span class="br0">)</span><span class="br0">(</span><span class="br0">)</span> <span class="kw4">const</span><span class="br0">)</span><span class="sy4">;</span>
<span class="kw1">template</span> <span class="sy1"><</span><span class="kw1">class</span> S, <span class="kw1">class</span> T, <span class="kw1">class</span> A<span class="sy1">></span>
const_mem_fun1_ref_t<span class="sy1"><</span>S,T,A<span class="sy1">></span> mem_fun_ref<span class="br0">(</span>S <span class="br0">(</span>T<span class="sy4">::</span><span class="sy2">*</span>f<span class="br0">)</span><span class="br0">(</span>A<span class="br0">)</span> <span class="kw4">const</span><span class="br0">)</span><span class="sy4">;</span>
 
<span class="co1">// member function adaptors:</span>
<span class="kw1">template</span><span class="sy1"><</span><span class="kw1">class</span> R, <span class="kw1">class</span> T<span class="sy1">></span> <span class="coMULTI">/*unspecified*/</span> mem_fn<span class="br0">(</span>R T<span class="sy4">::</span><span class="sy2">*</span><span class="br0">)</span><span class="sy4">;</span>
<span class="kw1">template</span><span class="sy1"><</span><span class="kw1">class</span> R, <span class="kw1">class</span> T, <span class="kw1">class</span>... <span class="me1">Args</span><span class="sy1">></span>
<span class="coMULTI">/*unspecified*/</span> mem_fn<span class="br0">(</span>R <span class="br0">(</span>T<span class="sy4">::</span><span class="sy2">*</span><span class="br0">)</span><span class="br0">(</span>Args...<span class="br0">)</span><span class="br0">)</span><span class="sy4">;</span>
<span class="kw1">template</span><span class="sy1"><</span><span class="kw1">class</span> R, <span class="kw1">class</span> T, <span class="kw1">class</span>... <span class="me1">Args</span><span class="sy1">></span>
<span class="coMULTI">/*unspecified*/</span> mem_fn<span class="br0">(</span>R <span class="br0">(</span>T<span class="sy4">::</span><span class="sy2">*</span><span class="br0">)</span><span class="br0">(</span>Args...<span class="br0">)</span> <span class="kw4">const</span><span class="br0">)</span><span class="sy4">;</span>
<span class="kw1">template</span><span class="sy1"><</span><span class="kw1">class</span> R, <span class="kw1">class</span> T, <span class="kw1">class</span>... <span class="me1">Args</span><span class="sy1">></span>
<span class="coMULTI">/*unspecified*/</span> mem_fn<span class="br0">(</span>R <span class="br0">(</span>T<span class="sy4">::</span><span class="sy2">*</span><span class="br0">)</span><span class="br0">(</span>Args...<span class="br0">)</span> <span class="kw4">volatile</span><span class="br0">)</span><span class="sy4">;</span>
<span class="kw1">template</span><span class="sy1"><</span><span class="kw1">class</span> R, <span class="kw1">class</span> T, <span class="kw1">class</span>... <span class="me1">Args</span><span class="sy1">></span>
<span class="coMULTI">/*unspecified*/</span> mem_fn<span class="br0">(</span>R <span class="br0">(</span>T<span class="sy4">::</span><span class="sy2">*</span><span class="br0">)</span><span class="br0">(</span>Args...<span class="br0">)</span> <span class="kw4">const</span> <span class="kw4">volatile</span><span class="br0">)</span><span class="sy4">;</span>
<span class="kw1">template</span><span class="sy1"><</span><span class="kw1">class</span> R, <span class="kw1">class</span> T, <span class="kw1">class</span>... <span class="me1">Args</span><span class="sy1">></span>
<span class="coMULTI">/*unspecified*/</span> mem_fn<span class="br0">(</span>R <span class="br0">(</span>T<span class="sy4">::</span><span class="sy2">*</span><span class="br0">)</span><span class="br0">(</span>Args...<span class="br0">)</span> <span class="sy3">&</span><span class="br0">)</span><span class="sy4">;</span>
<span class="kw1">template</span><span class="sy1"><</span><span class="kw1">class</span> R, <span class="kw1">class</span> T, <span class="kw1">class</span>... <span class="me1">Args</span><span class="sy1">></span>
<span class="coMULTI">/*unspecified*/</span> mem_fn<span class="br0">(</span>R <span class="br0">(</span>T<span class="sy4">::</span><span class="sy2">*</span><span class="br0">)</span><span class="br0">(</span>Args...<span class="br0">)</span> <span class="kw4">const</span> <span class="sy3">&</span><span class="br0">)</span><span class="sy4">;</span>
<span class="kw1">template</span><span class="sy1"><</span><span class="kw1">class</span> R, <span class="kw1">class</span> T, <span class="kw1">class</span>... <span class="me1">Args</span><span class="sy1">></span>
<span class="coMULTI">/*unspecified*/</span> mem_fn<span class="br0">(</span>R <span class="br0">(</span>T<span class="sy4">::</span><span class="sy2">*</span><span class="br0">)</span><span class="br0">(</span>Args...<span class="br0">)</span> <span class="kw4">volatile</span> <span class="sy3">&</span><span class="br0">)</span><span class="sy4">;</span>
<span class="kw1">template</span><span class="sy1"><</span><span class="kw1">class</span> R, <span class="kw1">class</span> T, <span class="kw1">class</span>... <span class="me1">Args</span><span class="sy1">></span>
<span class="coMULTI">/*unspecified*/</span> mem_fn<span class="br0">(</span>R <span class="br0">(</span>T<span class="sy4">::</span><span class="sy2">*</span><span class="br0">)</span><span class="br0">(</span>Args...<span class="br0">)</span> <span class="kw4">const</span> <span class="kw4">volatile</span> <span class="sy3">&</span><span class="br0">)</span><span class="sy4">;</span>
<span class="kw1">template</span><span class="sy1"><</span><span class="kw1">class</span> R, <span class="kw1">class</span> T, <span class="kw1">class</span>... <span class="me1">Args</span><span class="sy1">></span>
<span class="coMULTI">/*unspecified*/</span> mem_fn<span class="br0">(</span>R <span class="br0">(</span>T<span class="sy4">::</span><span class="sy2">*</span><span class="br0">)</span><span class="br0">(</span>Args...<span class="br0">)</span> <span class="sy3">&&</span><span class="br0">)</span><span class="sy4">;</span>
<span class="kw1">template</span><span class="sy1"><</span><span class="kw1">class</span> R, <span class="kw1">class</span> T, <span class="kw1">class</span>... <span class="me1">Args</span><span class="sy1">></span>
<span class="coMULTI">/*unspecified*/</span> mem_fn<span class="br0">(</span>R <span class="br0">(</span>T<span class="sy4">::</span><span class="sy2">*</span><span class="br0">)</span><span class="br0">(</span>Args...<span class="br0">)</span> <span class="kw4">const</span> <span class="sy3">&&</span><span class="br0">)</span><span class="sy4">;</span>
<span class="kw1">template</span><span class="sy1"><</span><span class="kw1">class</span> R, <span class="kw1">class</span> T, <span class="kw1">class</span>... <span class="me1">Args</span><span class="sy1">></span>
<span class="coMULTI">/*unspecified*/</span> mem_fn<span class="br0">(</span>R <span class="br0">(</span>T<span class="sy4">::</span><span class="sy2">*</span><span class="br0">)</span><span class="br0">(</span>Args...<span class="br0">)</span> <span class="kw4">volatile</span> <span class="sy3">&&</span><span class="br0">)</span><span class="sy4">;</span>
<span class="kw1">template</span><span class="sy1"><</span><span class="kw1">class</span> R, <span class="kw1">class</span> T, <span class="kw1">class</span>... <span class="me1">Args</span><span class="sy1">></span>
<span class="coMULTI">/*unspecified*/</span> mem_fn<span class="br0">(</span>R <span class="br0">(</span>T<span class="sy4">::</span><span class="sy2">*</span><span class="br0">)</span><span class="br0">(</span>Args...<span class="br0">)</span> <span class="kw4">const</span> <span class="kw4">volatile</span> <span class="sy3">&&</span><span class="br0">)</span><span class="sy4">;</span>
 
<span class="co1">// polymorphic function wrappers:</span>
<span class="kw1">class</span> bad_function_call<span class="sy4">;</span>
<span class="kw1">template</span><span class="sy1"><</span><span class="kw1">class</span><span class="sy1">></span> <span class="kw1">class</span> function<span class="sy4">;</span> <span class="co1">// undefined</span>
<span class="kw1">template</span><span class="sy1"><</span><span class="kw1">class</span> R, <span class="kw1">class</span>... <span class="me1">ArgTypes</span><span class="sy1">></span> <span class="kw1">class</span> function<span class="sy1"><</span>R<span class="br0">(</span>ArgTypes...<span class="br0">)</span><span class="sy1">></span><span class="sy4">;</span>
<span class="kw1">template</span><span class="sy1"><</span><span class="kw1">class</span> R, <span class="kw1">class</span>... <span class="me1">ArgTypes</span><span class="sy1">></span>
<span class="kw4">void</span> swap<span class="br0">(</span>function<span class="sy1"><</span>R<span class="br0">(</span>ArgTypes...<span class="br0">)</span><span class="sy1">></span><span class="sy3">&</span>, function<span class="sy1"><</span>R<span class="br0">(</span>ArgTypes...<span class="br0">)</span><span class="sy1">></span><span class="sy3">&</span><span class="br0">)</span><span class="sy4">;</span>
<span class="kw1">template</span><span class="sy1"><</span><span class="kw1">class</span> R, <span class="kw1">class</span>... <span class="me1">ArgTypes</span><span class="sy1">></span>
<span class="kw4">bool</span> operator<span class="sy1">==</span><span class="br0">(</span><span class="kw4">const</span> function<span class="sy1"><</span>R<span class="br0">(</span>ArgTypes...<span class="br0">)</span><span class="sy1">></span><span class="sy3">&</span>, nullptr_t<span class="br0">)</span><span class="sy4">;</span>
<span class="kw1">template</span><span class="sy1"><</span><span class="kw1">class</span> R, <span class="kw1">class</span>... <span class="me1">ArgTypes</span><span class="sy1">></span>
<span class="kw4">bool</span> operator<span class="sy1">==</span><span class="br0">(</span>nullptr_t, <span class="kw4">const</span> function<span class="sy1"><</span>R<span class="br0">(</span>ArgTypes...<span class="br0">)</span><span class="sy1">></span><span class="sy3">&</span><span class="br0">)</span><span class="sy4">;</span>
<span class="kw1">template</span><span class="sy1"><</span><span class="kw1">class</span> R, <span class="kw1">class</span>... <span class="me1">ArgTypes</span><span class="sy1">></span>
<span class="kw4">bool</span> operator<span class="sy3">!</span><span class="sy1">=</span><span class="br0">(</span><span class="kw4">const</span> function<span class="sy1"><</span>R<span class="br0">(</span>ArgTypes...<span class="br0">)</span><span class="sy1">></span><span class="sy3">&</span>, nullptr_t<span class="br0">)</span><span class="sy4">;</span>
<span class="kw1">template</span><span class="sy1"><</span><span class="kw1">class</span> R, <span class="kw1">class</span>... <span class="me1">ArgTypes</span><span class="sy1">></span>
<span class="kw4">bool</span> operator<span class="sy3">!</span><span class="sy1">=</span><span class="br0">(</span>nullptr_t, <span class="kw4">const</span> function<span class="sy1"><</span>R<span class="br0">(</span>ArgTypes...<span class="br0">)</span><span class="sy1">></span><span class="sy3">&</span><span class="br0">)</span><span class="sy4">;</span>
 
<span class="co1">// hash function base template:</span>
<span class="kw1">template</span> <span class="sy1"><</span><span class="kw1">class</span> T<span class="sy1">></span> <span class="kw1">struct</span> hash<span class="sy4">;</span>
 
<span class="co1">// Hash function specializations</span>
<span class="kw1">template</span> <span class="sy1"><></span> <span class="kw1">struct</span> hash<span class="sy1"><</span><span class="kw4">bool</span><span class="sy1">></span><span class="sy4">;</span>
<span class="kw1">template</span> <span class="sy1"><></span> <span class="kw1">struct</span> hash<span class="sy1"><</span><span class="kw4">char</span><span class="sy1">></span><span class="sy4">;</span>
<span class="kw1">template</span> <span class="sy1"><></span> <span class="kw1">struct</span> hash<span class="sy1"><</span><span class="kw4">signed</span> <span class="kw4">char</span><span class="sy1">></span><span class="sy4">;</span>
<span class="kw1">template</span> <span class="sy1"><></span> <span class="kw1">struct</span> hash<span class="sy1"><</span><span class="kw4">unsigned</span> <span class="kw4">char</span><span class="sy1">></span><span class="sy4">;</span>
<span class="kw1">template</span> <span class="sy1"><></span> <span class="kw1">struct</span> hash<span class="sy1"><</span><span class="kw4">char16_t</span><span class="sy1">></span><span class="sy4">;</span>
<span class="kw1">template</span> <span class="sy1"><></span> <span class="kw1">struct</span> hash<span class="sy1"><</span><span class="kw4">char32_t</span><span class="sy1">></span><span class="sy4">;</span>
<span class="kw1">template</span> <span class="sy1"><></span> <span class="kw1">struct</span> hash<span class="sy1"><</span><span class="kw4">wchar_t</span><span class="sy1">></span><span class="sy4">;</span>
<span class="kw1">template</span> <span class="sy1"><></span> <span class="kw1">struct</span> hash<span class="sy1"><</span><span class="kw4">short</span><span class="sy1">></span><span class="sy4">;</span>
<span class="kw1">template</span> <span class="sy1"><></span> <span class="kw1">struct</span> hash<span class="sy1"><</span><span class="kw4">unsigned</span> <span class="kw4">short</span><span class="sy1">></span><span class="sy4">;</span>
<span class="kw1">template</span> <span class="sy1"><></span> <span class="kw1">struct</span> hash<span class="sy1"><</span><span class="kw4">int</span><span class="sy1">></span><span class="sy4">;</span>
<span class="kw1">template</span> <span class="sy1"><></span> <span class="kw1">struct</span> hash<span class="sy1"><</span><span class="kw4">unsigned</span> <span class="kw4">int</span><span class="sy1">></span><span class="sy4">;</span>
<span class="kw1">template</span> <span class="sy1"><></span> <span class="kw1">struct</span> hash<span class="sy1"><</span><span class="kw4">long</span><span class="sy1">></span><span class="sy4">;</span>
<span class="kw1">template</span> <span class="sy1"><></span> <span class="kw1">struct</span> hash<span class="sy1"><</span><span class="kw4">long</span> <span class="kw4">long</span><span class="sy1">></span><span class="sy4">;</span>
<span class="kw1">template</span> <span class="sy1"><></span> <span class="kw1">struct</span> hash<span class="sy1"><</span><span class="kw4">unsigned</span> <span class="kw4">long</span><span class="sy1">></span><span class="sy4">;</span>
<span class="kw1">template</span> <span class="sy1"><></span> <span class="kw1">struct</span> hash<span class="sy1"><</span><span class="kw4">unsigned</span> <span class="kw4">long</span> <span class="kw4">long</span><span class="sy1">></span><span class="sy4">;</span>
<span class="kw1">template</span> <span class="sy1"><></span> <span class="kw1">struct</span> hash<span class="sy1"><</span><span class="kw4">float</span><span class="sy1">></span><span class="sy4">;</span>
<span class="kw1">template</span> <span class="sy1"><></span> <span class="kw1">struct</span> hash<span class="sy1"><</span><span class="kw4">double</span><span class="sy1">></span><span class="sy4">;</span>
<span class="kw1">template</span> <span class="sy1"><></span> <span class="kw1">struct</span> hash<span class="sy1"><</span><span class="kw4">long</span> <span class="kw4">double</span><span class="sy1">></span><span class="sy4">;</span>
<span class="kw1">template</span><span class="sy1"><</span><span class="kw1">class</span> T<span class="sy1">></span> <span class="kw1">struct</span> hash<span class="sy1"><</span>T<span class="sy2">*</span><span class="sy1">></span><span class="sy4">;</span>
 
<span class="br0">}</span></pre></div></div>
<p><br />
</p>
<h4><span class="editsection">[<a href="http://en.cppreference.com/mwiki/index.php?title=cpp/header/functional&action=edit&section=7" title="Edit section: Class std::reference wrapper">edit</a>]</span> <span class="mw-headline" id="Class_std::reference_wrapper">Class <span class="t-lc"><a href="../utility/functional/reference_wrapper.html" title="cpp/utility/functional/reference wrapper">std::reference_wrapper</a></span></span></h4>
<div dir="ltr" class="mw-geshi" style="text-align: left;"><div class="cpp source-cpp"><pre class="de1"><span class="kw1">template</span> <span class="sy1"><</span><span class="kw1">class</span> T<span class="sy1">></span> <span class="kw1">class</span> reference_wrapper <span class="br0">{</span>
<span class="kw1">public</span> <span class="sy4">:</span>
<span class="co1">// types</span>
<span class="kw1">typedef</span> T type<span class="sy4">;</span>
<span class="kw1">typedef</span> <span class="coMULTI">/*Return type of T*/</span> result_type<span class="sy4">;</span> <span class="co1">// not always defined</span>
<span class="kw1">typedef</span> <span class="coMULTI">/*Single argument of T*/</span> argument_type<span class="sy4">;</span> <span class="co1">// not always defined</span>
<span class="kw1">typedef</span> <span class="coMULTI">/*1st argument of T*/</span> first_argument_type<span class="sy4">;</span> <span class="co1">// not always defined</span>
<span class="kw1">typedef</span> <span class="coMULTI">/*2nd argument of T*/</span> second_argument_type<span class="sy4">;</span> <span class="co1">// not always defined</span>
 
<span class="co1">// construct/copy/destroy</span>
reference_wrapper<span class="br0">(</span>T<span class="sy3">&</span><span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
reference_wrapper<span class="br0">(</span>T<span class="sy3">&&</span><span class="br0">)</span> <span class="sy1">=</span> delete<span class="sy4">;</span>
 
<span class="co1">// do not bind to temporary objects</span>
reference_wrapper<span class="br0">(</span><span class="kw4">const</span> reference_wrapper<span class="sy1"><</span>T<span class="sy1">></span><span class="sy3">&</span> x<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
 
<span class="co1">// assignment</span>
reference_wrapper<span class="sy3">&</span> operator<span class="sy1">=</span><span class="br0">(</span><span class="kw4">const</span> reference_wrapper<span class="sy1"><</span>T<span class="sy1">></span><span class="sy3">&</span> x<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
 
<span class="co1">// access</span>
operator T<span class="sy3">&</span> <span class="br0">(</span><span class="br0">)</span> <span class="kw4">const</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
T<span class="sy3">&</span> get<span class="br0">(</span><span class="br0">)</span> <span class="kw4">const</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
 
<span class="co1">// invocation</span>
<span class="kw1">template</span> <span class="sy1"><</span><span class="kw1">class</span>... <span class="me1">ArgTypes</span><span class="sy1">></span>
<span class="kw1">typename</span> result_of<span class="sy1"><</span>T<span class="sy3">&</span><span class="br0">(</span>ArgTypes<span class="sy3">&&</span>...<span class="br0">)</span><span class="sy1">></span><span class="sy4">::</span><span class="me2">type</span>
operator<span class="br0">(</span><span class="br0">)</span> <span class="br0">(</span>ArgTypes<span class="sy3">&&</span>...<span class="br0">)</span> <span class="kw4">const</span><span class="sy4">;</span>
 
<span class="br0">}</span><span class="sy4">;</span></pre></div></div>
<h4><span class="editsection">[<a href="http://en.cppreference.com/mwiki/index.php?title=cpp/header/functional&action=edit&section=8" title="Edit section: Class std::is bind expression">edit</a>]</span> <span class="mw-headline" id="Class_std::is_bind_expression">Class <span class="t-lc"><a href="../utility/functional/is_bind_expression.html" title="cpp/utility/functional/is bind expression">std::is_bind_expression</a></span></span></h4>
<div dir="ltr" class="mw-geshi" style="text-align: left;"><div class="cpp source-cpp"><pre class="de1"><span class="kw1">template</span><span class="sy1"><</span><span class="kw1">class</span> T<span class="sy1">></span> <span class="kw1">struct</span> is_bind_expression
<span class="sy4">:</span> integral_constant<span class="sy1"><</span><span class="kw4">bool</span>, <span class="coMULTI">/*true</span></pre></div></div>
<p><br />
</p>
<h4><span class="editsection">[<a href="http://en.cppreference.com/mwiki/index.php?title=cpp/header/functional&action=edit&section=9" title="Edit section: Class std::bad function call">edit</a>]</span> <span class="mw-headline" id="Class_std::bad_function_call">Class <span class="t-lc"><a href="../utility/functional/bad_function_call.html" title="cpp/utility/functional/bad function call">std::bad_function_call</a></span></span></h4>
<div dir="ltr" class="mw-geshi" style="text-align: left;"><div class="cpp source-cpp"><pre class="de1"><span class="kw1">class</span> bad_function_call <span class="sy4">:</span> <span class="kw1">public</span> <a href="../error/exception.html"><span class="kw644">std::<span class="me2">exception</span></span></a> <span class="br0">{</span>
<span class="kw1">public</span><span class="sy4">:</span>
<span class="co1">// constructor:</span>
bad_function_call<span class="br0">(</span><span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
<span class="br0">}</span><span class="sy4">;</span></pre></div></div>
<h4><span class="editsection">[<a href="http://en.cppreference.com/mwiki/index.php?title=cpp/header/functional&action=edit&section=10" title="Edit section: Class std::function">edit</a>]</span> <span class="mw-headline" id="Class_std::function">Class <span class="t-lc"><a href="../utility/functional/function.html" title="cpp/utility/functional/function">std::function</a></span></span></h4>
<div dir="ltr" class="mw-geshi" style="text-align: left;"><div class="cpp source-cpp"><pre class="de1"><span class="kw1">template</span><span class="sy1"><</span><span class="kw1">class</span><span class="sy1">></span> <span class="kw1">class</span> function<span class="sy4">;</span> <span class="co1">// undefined</span>
 
<span class="kw1">template</span><span class="sy1"><</span><span class="kw1">class</span> R, <span class="kw1">class</span>... <span class="me1">ArgTypes</span><span class="sy1">></span>
<span class="kw1">class</span> function<span class="sy1"><</span>R<span class="br0">(</span>ArgTypes...<span class="br0">)</span><span class="sy1">></span> <span class="br0">{</span>
<span class="kw1">public</span><span class="sy4">:</span>
<span class="kw1">typedef</span> R result_type<span class="sy4">;</span>
<span class="kw1">typedef</span> T1 argument_type<span class="sy4">;</span> <span class="co1">// iff sizeof...(ArgTypes) == 1 and</span>
<span class="co1">// the type in ArgTypes is T1</span>
<span class="kw1">typedef</span> T1 first_argument_type<span class="sy4">;</span> <span class="co1">// iff sizeof...(ArgTypes) == 2 and</span>
<span class="co1">// ArgTypes contains T1 and T2</span>
<span class="kw1">typedef</span> T2 second_argument_type<span class="sy4">;</span><span class="co1">// iff sizeof...(ArgTypes) == 2 and</span>
<span class="co1">// ArgTypes contains T1 and T2</span>
 
<span class="co1">// construct/copy/destroy:</span>
function<span class="br0">(</span><span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
function<span class="br0">(</span>nullptr_t<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
function<span class="br0">(</span><span class="kw4">const</span> function<span class="sy3">&</span><span class="br0">)</span><span class="sy4">;</span>
function<span class="br0">(</span>function<span class="sy3">&&</span><span class="br0">)</span><span class="sy4">;</span>
 
<span class="kw1">template</span><span class="sy1"><</span><span class="kw1">class</span> F<span class="sy1">></span> function<span class="br0">(</span>F<span class="br0">)</span><span class="sy4">;</span>
<span class="kw1">template</span><span class="sy1"><</span><span class="kw1">class</span> A<span class="sy1">></span> function<span class="br0">(</span>allocator_arg_t, <span class="kw4">const</span> A<span class="sy3">&</span><span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
<span class="kw1">template</span><span class="sy1"><</span><span class="kw1">class</span> A<span class="sy1">></span> function<span class="br0">(</span>allocator_arg_t, <span class="kw4">const</span> A<span class="sy3">&</span>, nullptr_t<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
<span class="kw1">template</span><span class="sy1"><</span><span class="kw1">class</span> A<span class="sy1">></span> function<span class="br0">(</span>allocator_arg_t, <span class="kw4">const</span> A<span class="sy3">&</span>, <span class="kw4">const</span> function<span class="sy3">&</span><span class="br0">)</span><span class="sy4">;</span>
<span class="kw1">template</span><span class="sy1"><</span><span class="kw1">class</span> A<span class="sy1">></span> function<span class="br0">(</span>allocator_arg_t, <span class="kw4">const</span> A<span class="sy3">&</span>, function<span class="sy3">&&</span><span class="br0">)</span><span class="sy4">;</span>
<span class="kw1">template</span><span class="sy1"><</span><span class="kw1">class</span> F, <span class="kw1">class</span> A<span class="sy1">></span> function<span class="br0">(</span>allocator_arg_t, <span class="kw4">const</span> A<span class="sy3">&</span>, F<span class="br0">)</span><span class="sy4">;</span>
 
function<span class="sy3">&</span> operator<span class="sy1">=</span><span class="br0">(</span><span class="kw4">const</span> function<span class="sy3">&</span><span class="br0">)</span><span class="sy4">;</span>
function<span class="sy3">&</span> operator<span class="sy1">=</span><span class="br0">(</span>function<span class="sy3">&&</span><span class="br0">)</span><span class="sy4">;</span>
function<span class="sy3">&</span> operator<span class="sy1">=</span><span class="br0">(</span>nullptr_t<span class="br0">)</span><span class="sy4">;</span>
<span class="kw1">template</span><span class="sy1"><</span><span class="kw1">class</span> F<span class="sy1">></span> function<span class="sy3">&</span> operator<span class="sy1">=</span><span class="br0">(</span>F<span class="sy3">&&</span><span class="br0">)</span><span class="sy4">;</span>
<span class="kw1">template</span><span class="sy1"><</span><span class="kw1">class</span> F<span class="sy1">></span> function<span class="sy3">&</span> operator<span class="sy1">=</span><span class="br0">(</span>reference_wrapper<span class="sy1"><</span>F<span class="sy1">></span><span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
 
~function<span class="br0">(</span><span class="br0">)</span><span class="sy4">;</span>
 
<span class="co1">// function modifiers:</span>
<span class="kw4">void</span> swap<span class="br0">(</span>function<span class="sy3">&</span><span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
<span class="kw1">template</span><span class="sy1"><</span><span class="kw1">class</span> F, <span class="kw1">class</span> A<span class="sy1">></span> <span class="kw4">void</span> assign<span class="br0">(</span>F<span class="sy3">&&</span>, <span class="kw4">const</span> A<span class="sy3">&</span><span class="br0">)</span><span class="sy4">;</span>
 
<span class="co1">// function capacity:</span>
<span class="kw1">explicit</span> operator <span class="kw4">bool</span><span class="br0">(</span><span class="br0">)</span> <span class="kw4">const</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
 
<span class="co1">// function invocation:</span>
R operator<span class="br0">(</span><span class="br0">)</span><span class="br0">(</span>ArgTypes...<span class="br0">)</span> <span class="kw4">const</span><span class="sy4">;</span>
 
<span class="co1">// function target access:</span>
<span class="kw4">const</span> <a href="../types/type_info.html"><span class="kw437">std::<span class="me2">type_info</span></span></a><span class="sy3">&</span> target_type<span class="br0">(</span><span class="br0">)</span> <span class="kw4">const</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
<span class="kw1">template</span> <span class="sy1"><</span><span class="kw1">typename</span> T<span class="sy1">></span> T<span class="sy2">*</span> target<span class="br0">(</span><span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
<span class="kw1">template</span> <span class="sy1"><</span><span class="kw1">typename</span> T<span class="sy1">></span> <span class="kw4">const</span> T<span class="sy2">*</span> target<span class="br0">(</span><span class="br0">)</span> <span class="kw4">const</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
 
<span class="br0">}</span><span class="sy4">;</span></pre></div></div>
<p><br />
</p>
<h3><span class="editsection">[<a href="http://en.cppreference.com/mwiki/index.php?title=cpp/header/functional&action=edit&section=11" title="Edit section: See Also">edit</a>]</span> <span class="mw-headline" id="See_Also">See Also</span></h3>
<table class="t-dsc-begin">
<tr class="t-dsc">
<td> <a href="string.html" title="cpp/header/string"><tt><string></tt></a>
</td>
<td> Specializes <span class="t-lc"><a href="../utility/hash.html" title="cpp/utility/hash">std::hash</a></span> for <span class="t-lc"><a href="../string/basic_string.html" title="cpp/string/basic string">std::string</a></span>, <span class="t-lc"><a href="../string/basic_string.html" title="cpp/string/basic string">std::u16string</a></span>, <span class="t-lc"><a href="../string/basic_string.html" title="cpp/string/basic string">std::u32string</a></span>, <span class="t-lc"><a href="../string/basic_string.html" title="cpp/string/basic string">std::wstring</a></span>
</td></tr>
<tr class="t-dsc">
<td> <a href="system_error.html" title="cpp/header/system error"><tt><system_error></tt></a>
</td>
<td> Specializes <span class="t-lc"><a href="../utility/hash.html" title="cpp/utility/hash">std::hash</a></span> for <span class="t-lc"><a href="../error/error_code.html" title="cpp/error/error code">std::error_code</a></span>
</td></tr>
<tr class="t-dsc">
<td> <a href="bitset.html" title="cpp/header/bitset"><tt><bitset></tt></a>
</td>
<td> Specializes <span class="t-lc"><a href="../utility/hash.html" title="cpp/utility/hash">std::hash</a></span> for <span class="t-lc"><a href="../utility/bitset.html" title="cpp/utility/bitset">std::bitset</a></span>
</td></tr>
<tr class="t-dsc">
<td> <a href="memory.html" title="cpp/header/memory"><tt><memory></tt></a>
</td>
<td> Specializes <span class="t-lc"><a href="../utility/hash.html" title="cpp/utility/hash">std::hash</a></span> for <span class="t-lc"><a href="../memory/unique_ptr.html" title="cpp/memory/unique ptr">std::unique_ptr</a></span>, <span class="t-lc"><a href="../memory/shared_ptr.html" title="cpp/memory/shared ptr">std::shared_ptr</a></span>
</td></tr>
<tr class="t-dsc">
<td> <a href="typeindex.html" title="cpp/header/typeindex"><tt><typeindex></tt></a>
</td>
<td> Specializes <span class="t-lc"><a href="../utility/hash.html" title="cpp/utility/hash">std::hash</a></span> for <span class="t-lc"><a href="../types/type_index.html" title="cpp/types/type index">std::type_index</a></span>
</td></tr>
<tr class="t-dsc">
<td> <a href="vector.html" title="cpp/header/vector"><tt><vector></tt></a>
</td>
<td> Specializes <span class="t-lc"><a href="../utility/hash.html" title="cpp/utility/hash">std::hash</a></span> for <span class="t-c"><span class="mw-geshi cpp source-cpp"><a href="../container/vector.html"><span class="kw1094">std::<span class="me2">vector</span></span></a><span class="sy1"><</span><span class="kw4">bool</span><span class="sy1">></span></span></span>
</td></tr>
<tr class="t-dsc">
<td> <a href="thread.html" title="cpp/header/thread"><tt><thread></tt></a>
</td>
<td> Specializes <span class="t-lc"><a href="../utility/hash.html" title="cpp/utility/hash">std::hash</a></span> for <span class="t-lc"><a href="../thread/thread/id.1.html" title="cpp/thread/thread/id">std::thread::id</a></span>
</td></tr>
</table>
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