<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "https://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/> <meta http-equiv="X-UA-Compatible" content="IE=9"/> <meta name="generator" content="Doxygen 1.8.15"/> <meta name="viewport" content="width=device-width, initial-scale=1"/> <title>libstdc++: std::pointer_traits< _Ptr > Struct Template Reference</title> <link href="tabs.css" rel="stylesheet" type="text/css"/> <script type="text/javascript" src="jquery.js"></script> <script type="text/javascript" src="dynsections.js"></script> <link href="navtree.css" rel="stylesheet" type="text/css"/> <script type="text/javascript" src="resize.js"></script> <script type="text/javascript" src="navtreedata.js"></script> <script type="text/javascript" src="navtree.js"></script> <script type="text/javascript"> /* @license 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$(document).ready(function(){initNavTree('a06248.html','');}); /* @license-end */ </script> <div id="doc-content"> <div class="header"> <div class="summary"> <a href="#pub-types">Public Types</a> | <a href="#pub-static-methods">Static Public Member Functions</a> | <a href="a06245.html">List of all members</a> </div> <div class="headertitle"> <div class="title">std::pointer_traits< _Ptr > Struct Template Reference<div class="ingroups"><a class="el" href="a01477.html">Utilities</a> » <a class="el" href="a01471.html">Memory</a> » <a class="el" href="a01472.html">Pointer Abstractions</a></div></div> </div> </div><!--header--> <div class="contents"> <table class="memberdecls"> <tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-types"></a> Public Types</h2></td></tr> <tr class="memitem:aae92f86267e7a5f41c435f4f28eecbdb"><td class="memItemLeft" align="right" valign="top">using </td><td class="memItemRight" valign="bottom"><a class="el" href="a06248.html#aae92f86267e7a5f41c435f4f28eecbdb">difference_type</a> = __detected_or_t< ptrdiff_t, __difference_type, _Ptr ></td></tr> <tr class="separator:aae92f86267e7a5f41c435f4f28eecbdb"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:a2952524002a6723ff9bec4c5dbee8367"><td class="memItemLeft" align="right" valign="top">using </td><td class="memItemRight" valign="bottom"><a class="el" href="a06248.html#a2952524002a6723ff9bec4c5dbee8367">element_type</a> = __detected_or_t< __get_first_arg_t< _Ptr >, __element_type, _Ptr ></td></tr> <tr class="separator:a2952524002a6723ff9bec4c5dbee8367"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:a7f43cc1c2c600c67cef1972c4618b357"><td class="memItemLeft" align="right" valign="top">using </td><td class="memItemRight" valign="bottom"><a class="el" href="a06248.html#a7f43cc1c2c600c67cef1972c4618b357">pointer</a> = _Ptr</td></tr> <tr class="separator:a7f43cc1c2c600c67cef1972c4618b357"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:a623750ac65e5d54fc26075bc69af6081"><td class="memTemplParams" colspan="2">template<typename _Up > </td></tr> <tr class="memitem:a623750ac65e5d54fc26075bc69af6081"><td class="memTemplItemLeft" align="right" valign="top">using </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a06248.html#a623750ac65e5d54fc26075bc69af6081">rebind</a> = typename __rebind< _Ptr, _Up >::type</td></tr> <tr class="separator:a623750ac65e5d54fc26075bc69af6081"><td class="memSeparator" colspan="2"> </td></tr> </table><table class="memberdecls"> <tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-static-methods"></a> Static Public Member Functions</h2></td></tr> <tr class="memitem:a693780de2468bd01def514ad73ed9290"><td class="memItemLeft" align="right" valign="top"><a id="a693780de2468bd01def514ad73ed9290"></a> static _Ptr </td><td class="memItemRight" valign="bottom"><b>pointer_to</b> (__make_not_void< <a class="el" href="a06248.html#a2952524002a6723ff9bec4c5dbee8367">element_type</a> > &__e)</td></tr> <tr class="separator:a693780de2468bd01def514ad73ed9290"><td class="memSeparator" colspan="2"> </td></tr> </table> <a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2> <div class="textblock"><h3>template<typename _Ptr><br /> struct std::pointer_traits< _Ptr ></h3> <p>Uniform interface to all pointer-like types. </p> <p class="definition">Definition at line <a class="el" href="a00446_source.html#l00078">78</a> of file <a class="el" href="a00446_source.html">ptr_traits.h</a>.</p> </div><h2 class="groupheader">Member Typedef Documentation</h2> <a id="aae92f86267e7a5f41c435f4f28eecbdb"></a> <h2 class="memtitle"><span class="permalink"><a href="#aae92f86267e7a5f41c435f4f28eecbdb">◆ </a></span>difference_type</h2> <div class="memitem"> <div class="memproto"> <div class="memtemplate"> template<typename _Ptr> </div> <table class="memname"> <tr> <td class="memname">using <a class="el" href="a06248.html">std::pointer_traits</a>< _Ptr >::<a class="el" href="a06248.html#aae92f86267e7a5f41c435f4f28eecbdb">difference_type</a> = __detected_or_t<ptrdiff_t, __difference_type, _Ptr></td> </tr> </table> </div><div class="memdoc"> <p>The type used to represent the difference between two pointers. </p> <p class="definition">Definition at line <a class="el" href="a00446_source.html#l00104">104</a> of file <a class="el" href="a00446_source.html">ptr_traits.h</a>.</p> </div> </div> <a id="a2952524002a6723ff9bec4c5dbee8367"></a> <h2 class="memtitle"><span class="permalink"><a href="#a2952524002a6723ff9bec4c5dbee8367">◆ </a></span>element_type</h2> <div class="memitem"> <div class="memproto"> <div class="memtemplate"> template<typename _Ptr> </div> <table class="memname"> <tr> <td class="memname">using <a class="el" href="a06248.html">std::pointer_traits</a>< _Ptr >::<a class="el" href="a06248.html#a2952524002a6723ff9bec4c5dbee8367">element_type</a> = __detected_or_t<__get_first_arg_t<_Ptr>, __element_type, _Ptr></td> </tr> </table> </div><div class="memdoc"> <p>The type pointed to. </p> <p class="definition">Definition at line <a class="el" href="a00446_source.html#l00100">100</a> of file <a class="el" href="a00446_source.html">ptr_traits.h</a>.</p> </div> </div> <a id="a7f43cc1c2c600c67cef1972c4618b357"></a> <h2 class="memtitle"><span class="permalink"><a href="#a7f43cc1c2c600c67cef1972c4618b357">◆ </a></span>pointer</h2> <div class="memitem"> <div class="memproto"> <div class="memtemplate"> template<typename _Ptr> </div> <table class="memname"> <tr> <td class="memname">using <a class="el" href="a06248.html">std::pointer_traits</a>< _Ptr >::<a class="el" href="a06248.html#a7f43cc1c2c600c67cef1972c4618b357">pointer</a> = _Ptr</td> </tr> </table> </div><div class="memdoc"> <p>The pointer type. </p> <p class="definition">Definition at line <a class="el" href="a00446_source.html#l00096">96</a> of file <a class="el" href="a00446_source.html">ptr_traits.h</a>.</p> </div> </div> <a id="a623750ac65e5d54fc26075bc69af6081"></a> <h2 class="memtitle"><span class="permalink"><a href="#a623750ac65e5d54fc26075bc69af6081">◆ </a></span>rebind</h2> <div class="memitem"> <div class="memproto"> <div class="memtemplate"> template<typename _Ptr> </div> <div class="memtemplate"> template<typename _Up > </div> <table class="memname"> <tr> <td class="memname">using <a class="el" href="a06248.html">std::pointer_traits</a>< _Ptr >::<a class="el" href="a06248.html#a623750ac65e5d54fc26075bc69af6081">rebind</a> = typename __rebind<_Ptr, _Up>::type</td> </tr> </table> </div><div class="memdoc"> <p>A pointer to a different type. </p> <p class="definition">Definition at line <a class="el" href="a00446_source.html#l00108">108</a> of file <a class="el" href="a00446_source.html">ptr_traits.h</a>.</p> </div> </div> <hr/>The documentation for this struct was generated 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