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<tr class="t-nv-h2"><td colspan="5"> Relational operators</td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="rel_ops/operator_cmp.html" title="cpp/utility/rel ops/operator cmp"><span class="t-lines"><span>rel_ops::operator!=</span><span>rel_ops::operator&gt;</span><span>rel_ops::operator&lt;=</span><span>rel_ops::operator&gt;=</span></span></a></div></div></td></tr>
<tr class="t-nv-h2"><td colspan="5"> Pairs and tuples</td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="pair.html" title="cpp/utility/pair"><span class="t-lines"><span>pair</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="tuple.html" title="cpp/utility/tuple"><span class="t-lines"><span>tuple</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></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="piecewise_construct_t.html" title="cpp/utility/piecewise construct t"><span class="t-lines"><span>piecewise_construct_t</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></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="piecewise_construct.html" title="cpp/utility/piecewise construct"><span class="t-lines"><span>piecewise_construct</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></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="integer_sequence.html" title="cpp/utility/integer sequence"><span class="t-lines"><span>integer_sequence</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx14">(C++14)</span></span></span></div></div></td></tr>
<tr class="t-nv-h2"><td colspan="5"> Swap, forward and move</td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="../algorithm/swap.html" title="cpp/algorithm/swap"><span class="t-lines"><span>swap</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="exchange.html" title="cpp/utility/exchange"><span class="t-lines"><span>exchange</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx14">(C++14)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="forward.html" title="cpp/utility/forward"><span class="t-lines"><span>forward</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></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="move.html" title="cpp/utility/move"><span class="t-lines"><span>move</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></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="move_if_noexcept.html" title="cpp/utility/move if noexcept"><span class="t-lines"><span>move_if_noexcept</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></tr>
<tr class="t-nv-h2"><td colspan="5"> Type operations</td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="declval.html" title="cpp/utility/declval"><span class="t-lines"><span>declval</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></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="as_const.html" title="cpp/utility/as const"><span class="t-lines"><span>as_const</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx17">(C++17)</span></span></span></div></div></td></tr>
</table></div><div><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/navbar_content&amp;action=edit">&#91;edit&#93;</a></span></div></div></div></div><div class="t-navbar-sep">&#160;</div><div class="t-navbar-head"><strong class="selflink"> Function objects</strong><div class="t-navbar-menu"><div><div><table class="t-nv-begin" cellpadding="0" style="">
<tr class="t-nv-h2"><td colspan="5"> Function wrappers </td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="functional/function.html" title="cpp/utility/functional/function"><span class="t-lines"><span>function</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></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="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></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="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></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="functional/invoke.html" title="cpp/utility/functional/invoke"><span class="t-lines"><span>invoke</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx17">(C++17)</span></span></span></div></div></td></tr>
<tr class="t-nv-h2"><td colspan="5"> Bind </td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="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></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="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></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="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></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="functional/placeholders.html" title="cpp/utility/functional/placeholders"><span class="t-lines"><span>_1, _2, _3, ...</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></tr>
<tr class="t-nv-h2"><td colspan="5"> Reference wrappers </td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="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></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="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></tr>
<tr class="t-nv-h2"><td colspan="5"> Operator wrappers </td></tr>
<tr class="t-nv-col-table"><td><div><table class="t-nv-begin" cellpadding="0" style="">
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="functional/plus.html" title="cpp/utility/functional/plus"><span class="t-lines"><span>plus</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="functional/minus.html" title="cpp/utility/functional/minus"><span class="t-lines"><span>minus</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="functional/negate.html" title="cpp/utility/functional/negate"><span class="t-lines"><span>negate</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="functional/multiplies.html" title="cpp/utility/functional/multiplies"><span class="t-lines"><span>multiplies</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="functional/divides.html" title="cpp/utility/functional/divides"><span class="t-lines"><span>divides</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="functional/modulus.html" title="cpp/utility/functional/modulus"><span class="t-lines"><span>modulus</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="functional/logical_and.html" title="cpp/utility/functional/logical and"><span class="t-lines"><span>logical_and</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="functional/logical_or.html" title="cpp/utility/functional/logical or"><span class="t-lines"><span>logical_or</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="functional/logical_not.html" title="cpp/utility/functional/logical not"><span class="t-lines"><span>logical_not</span></span></a></div></div></td></tr>
</table></div></td><td><div><table class="t-nv-begin" cellpadding="0" style="">
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="functional/equal_to.html" title="cpp/utility/functional/equal to"><span class="t-lines"><span>equal_to</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="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></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="functional/greater.html" title="cpp/utility/functional/greater"><span class="t-lines"><span>greater</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="functional/less.html" title="cpp/utility/functional/less"><span class="t-lines"><span>less</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="functional/greater_equal.html" title="cpp/utility/functional/greater equal"><span class="t-lines"><span>greater_equal</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="functional/less_equal.html" title="cpp/utility/functional/less equal"><span class="t-lines"><span>less_equal</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="functional/bit_and.html" title="cpp/utility/functional/bit and"><span class="t-lines"><span>bit_and</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="functional/bit_or.html" title="cpp/utility/functional/bit or"><span class="t-lines"><span>bit_or</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="functional/bit_xor.html" title="cpp/utility/functional/bit xor"><span class="t-lines"><span>bit_xor</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="functional/bit_not.html" title="cpp/utility/functional/bit not"><span class="t-lines"><span>bit_not</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx14">(C++14)</span></span></span></div></div></td></tr>
</table></div></td></tr>
<tr class="t-nv-h2"><td colspan="5"> Negators </td></tr>
<tr class="t-nv-col-table"><td><div><table class="t-nv-begin" cellpadding="0" style="">
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="functional/unary_negate.html" title="cpp/utility/functional/unary negate"><span class="t-lines"><span>unary_negate</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="functional/binary_negate.html" title="cpp/utility/functional/binary negate"><span class="t-lines"><span>binary_negate</span></span></a></div></div></td></tr>
</table></div></td><td><div><table class="t-nv-begin" cellpadding="0" style="">
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="functional/not1.html" title="cpp/utility/functional/not1"><span class="t-lines"><span>not1</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="functional/not2.html" title="cpp/utility/functional/not2"><span class="t-lines"><span>not2</span></span></a></div></div></td></tr>
</table></div></td></tr>
<tr class="t-nv-h2"><td colspan="5"> Deprecated binders and adaptors </td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="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></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="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></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="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></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="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></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="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></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="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></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="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></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="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></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="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></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="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></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="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></tr>
</table></div><div><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/navbar_content&amp;action=edit">&#91;edit&#93;</a></span></div></div></div></div><div class="t-navbar-sep">&#160;</div></div>
<p>A <i>function object</i> is any object for which the function call operator is defined.  C++ provides many built-in function objects as well as support for creation and manipulation of new function objects.
</p>
<table id="toc" class="toc"><tr><td><div id="toctitle"><h2>Contents</h2></div>
<ul>
<li class="toclevel-1 tocsection-1"><a href="functional.html#Polymorphic_function_wrappers"><span class="tocnumber">1</span> <span class="toctext">Polymorphic function wrappers</span></a></li>
<li class="toclevel-1 tocsection-2"><a href="functional.html#Bind"><span class="tocnumber">2</span> <span class="toctext">Bind</span></a></li>
<li class="toclevel-1 tocsection-3"><a href="functional.html#Reference_wrappers"><span class="tocnumber">3</span> <span class="toctext">Reference wrappers</span></a></li>
<li class="toclevel-1 tocsection-4"><a href="functional.html#Function_objects"><span class="tocnumber">4</span> <span class="toctext">Function objects</span></a>
<ul>
<li class="toclevel-2"><a href="functional.html#Arithmetic_operations"><span class="tocnumber">4.1</span> <span class="toctext">Arithmetic operations</span></a></li>
<li class="toclevel-2"><a href="functional.html#Comparisons"><span class="tocnumber">4.2</span> <span class="toctext">Comparisons</span></a></li>
<li class="toclevel-2"><a href="functional.html#Logical_operations"><span class="tocnumber">4.3</span> <span class="toctext">Logical operations</span></a></li>
<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>
</ul>
</li>
<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>
<ul>
<li class="toclevel-2"><a href="functional.html#Base"><span class="tocnumber">5.1</span> <span class="toctext">Base</span></a></li>
<li class="toclevel-2"><a href="functional.html#Binders"><span class="tocnumber">5.2</span> <span class="toctext">Binders</span></a></li>
<li class="toclevel-2"><a href="functional.html#Function_adaptors"><span class="tocnumber">5.3</span> <span class="toctext">Function adaptors</span></a></li>
</ul>
</li>
</ul>
</td></tr></table>
<h3><span class="editsection">[<a href="http://en.cppreference.com/mwiki/index.php?title=cpp/utility/functional&amp;action=edit&amp;section=1" title="Edit section: Polymorphic function wrappers">edit</a>]</span> <span class="mw-headline" id="Polymorphic_function_wrappers">Polymorphic function wrappers</span></h3>
<p><span class="t-lc"><a href="functional/function.html" title="cpp/utility/functional/function">std::function</a></span> provides support for storing arbitrary function objects.
</p>
<table class="t-dsc-begin">

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><a href="functional/function.html" title="cpp/utility/functional/function"> <span class="t-lines"><span>function</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>   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&amp;action=edit">&#91;edit&#93;</a></span>
</td></tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><a href="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&amp;action=edit">&#91;edit&#93;</a></span>
</td></tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><a href="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="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&amp;action=edit">&#91;edit&#93;</a></span>
</td></tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><a href="functional/invoke.html" title="cpp/utility/functional/invoke"> <span class="t-lines"><span>invoke</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx17">(C++17)</span></span></span></div></div>
</td>
<td>   invokes any <a href="../concept/Callable.html" title="cpp/concept/Callable"><code>Callable</code></a> object with given arguments  <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_invoke&amp;action=edit">&#91;edit&#93;</a></span>
</td></tr>
</table>
<h3><span class="editsection">[<a href="http://en.cppreference.com/mwiki/index.php?title=cpp/utility/functional&amp;action=edit&amp;section=2" title="Edit section: Bind">edit</a>]</span> <span class="mw-headline" id="Bind">Bind</span></h3>
<p><span class="t-lc"><a href="functional/bind.html" title="cpp/utility/functional/bind">std::bind</a></span> provides support for <a href="http://en.wikipedia.com/wiki/Partial_application" class="extiw" title="enwiki:Partial application">partial function application</a>, i.e. binding arguments to functions to produce new functions. 
</p>
<table class="t-dsc-begin">

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><a href="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&amp;action=edit">&#91;edit&#93;</a></span>
</td></tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><a href="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&amp;action=edit">&#91;edit&#93;</a></span>
</td></tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><a href="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&amp;action=edit">&#91;edit&#93;</a></span>
</td></tr>

<tr class="t-dsc-header">
<td colspan="2"> <div>Defined in  namespace <code>std::placeholders</code> </div>
</td></tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><a href="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>
</td>
<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&amp;action=edit">&#91;edit&#93;</a></span>
</td></tr>
</table>
<h3><span class="editsection">[<a href="http://en.cppreference.com/mwiki/index.php?title=cpp/utility/functional&amp;action=edit&amp;section=3" title="Edit section: Reference wrappers">edit</a>]</span> <span class="mw-headline" id="Reference_wrappers">Reference wrappers</span></h3>
<p>Reference wrappers allow reference arguments to be stored in copyable function objects:
</p>
<table class="t-dsc-begin">

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><a href="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&amp;action=edit">&#91;edit&#93;</a></span>
</td></tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><a href="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="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&amp;action=edit">&#91;edit&#93;</a></span>
</td></tr>
</table>
<h3><span class="editsection">[<a href="http://en.cppreference.com/mwiki/index.php?title=cpp/utility/functional&amp;action=edit&amp;section=4" title="Edit section: Function objects">edit</a>]</span> <span class="mw-headline" id="Function_objects">Function objects</span></h3>
<p>C++ defines several function objects that represent common arithmetic and logical operations:
</p>
<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="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&amp;action=edit">&#91;edit&#93;</a></span>
</td></tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><a href="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&amp;action=edit">&#91;edit&#93;</a></span>
</td></tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><a href="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&amp;action=edit">&#91;edit&#93;</a></span>
</td></tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><a href="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&amp;action=edit">&#91;edit&#93;</a></span>
</td></tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><a href="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&amp;action=edit">&#91;edit&#93;</a></span>
</td></tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><a href="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&amp;action=edit">&#91;edit&#93;</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="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&amp;action=edit">&#91;edit&#93;</a></span>
</td></tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><a href="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&amp;action=edit">&#91;edit&#93;</a></span>
</td></tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><a href="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">&gt;</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&amp;action=edit">&#91;edit&#93;</a></span>
</td></tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><a href="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">&lt;</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&amp;action=edit">&#91;edit&#93;</a></span>
</td></tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><a href="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">&gt;=</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&amp;action=edit">&#91;edit&#93;</a></span>
</td></tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><a href="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">&lt;=</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&amp;action=edit">&#91;edit&#93;</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="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">&amp;&amp;</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&amp;action=edit">&#91;edit&#93;</a></span>
</td></tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><a href="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&amp;action=edit">&#91;edit&#93;</a></span>
</td></tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><a href="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&amp;action=edit">&#91;edit&#93;</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="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">&amp;</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&amp;action=edit">&#91;edit&#93;</a></span>
</td></tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><a href="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&amp;action=edit">&#91;edit&#93;</a></span>
</td></tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><a href="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&amp;action=edit">&#91;edit&#93;</a></span>
</td></tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><a href="functional/bit_not.html" title="cpp/utility/functional/bit not"> <span class="t-lines"><span>bit_not</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx14">(C++14)</span></span></span></div></div>
</td>
<td>   function object implementing <span class="t-c"><span class="mw-geshi cpp source-cpp">~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_bit_not&amp;action=edit">&#91;edit&#93;</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="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&amp;action=edit">&#91;edit&#93;</a></span>
</td></tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><a href="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&amp;action=edit">&#91;edit&#93;</a></span>
</td></tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><a href="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="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&amp;action=edit">&#91;edit&#93;</a></span>
</td></tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><a href="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="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&amp;action=edit">&#91;edit&#93;</a></span>
</td></tr>
</table>
<h3><span class="editsection">[<a href="http://en.cppreference.com/mwiki/index.php?title=cpp/utility/functional&amp;action=edit&amp;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>
<p>Several utilities that provided early functional support are deprecated in C++11:
</p>
<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="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&amp;action=edit">&#91;edit&#93;</a></span>
</td></tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><a href="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&amp;action=edit">&#91;edit&#93;</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="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&amp;action=edit">&#91;edit&#93;</a></span>
</td></tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><a href="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&amp;action=edit">&#91;edit&#93;</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="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&amp;action=edit">&#91;edit&#93;</a></span>
</td></tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><a href="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&amp;action=edit">&#91;edit&#93;</a></span>
</td></tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><a href="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&amp;action=edit">&#91;edit&#93;</a></span>
</td></tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><a href="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&amp;action=edit">&#91;edit&#93;</a></span>
</td></tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><a href="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&amp;action=edit">&#91;edit&#93;</a></span>
</td></tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><a href="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&amp;action=edit">&#91;edit&#93;</a></span>
</td></tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><a href="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&amp;action=edit">&#91;edit&#93;</a></span>
</td></tr>
</table>

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