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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
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<title>libsigc++ 2.0: reference_wrapper.h File Reference</title>
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<h1>reference_wrapper.h File Reference</h1><table border="0" cellpadding="0" cellspacing="0">
<tr><td></td></tr>
<tr><td colspan="2"><br><h2>Namespaces</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">namespace </td><td class="memItemRight" valign="bottom"><a class="el" href="namespacesigc.html">sigc</a></td></tr>
<tr><td colspan="2"><br><h2>Classes</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">struct </td><td class="memItemRight" valign="bottom"><a class="el" href="structsigc_1_1reference__wrapper.html">sigc::reference_wrapper<T_type></a></td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Reference wrapper. <a href="structsigc_1_1reference__wrapper.html#_details">More...</a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">struct </td><td class="memItemRight" valign="bottom"><a class="el" href="structsigc_1_1const__reference__wrapper.html">sigc::const_reference_wrapper<T_type></a></td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Const reference wrapper. <a href="structsigc_1_1const__reference__wrapper.html#_details">More...</a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">struct </td><td class="memItemRight" valign="bottom"><a class="el" href="structsigc_1_1unwrap__reference.html">sigc::unwrap_reference<T_type></a></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">struct </td><td class="memItemRight" valign="bottom"><a class="el" href="structsigc_1_1unwrap__reference_3_01reference__wrapper_3_01T__type_01_4_01_4.html">sigc::unwrap_reference<reference_wrapper<T_type>></a></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">struct </td><td class="memItemRight" valign="bottom"><a class="el" href="structsigc_1_1unwrap__reference_3_01const__reference__wrapper_3_01T__type_01_4_01_4.html">sigc::unwrap_reference<const_reference_wrapper<T_type>></a></td></tr>
<tr><td colspan="2"><br><h2>Functions</h2></td></tr>
<tr><td class="memTemplParams" nowrap colspan="2">template<class T_type> </td></tr>
<tr><td class="memTemplItemLeft" nowrap align="right" valign="top">reference_wrapper<T_type> </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="namespacesigc.html#a317">ref</a> (T_type& v)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Creates a reference wrapper. <a href="#a317"></a><br></td></tr>
<tr><td class="memTemplParams" nowrap colspan="2">template<class T_type> </td></tr>
<tr><td class="memTemplItemLeft" nowrap align="right" valign="top">const_reference_wrapper<T_type> </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="namespacesigc.html#a318">ref</a> (const T_type& v)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Creates a const reference wrapper. <a href="#a318"></a><br></td></tr>
<tr><td class="memTemplParams" nowrap colspan="2">template<class T_type> </td></tr>
<tr><td class="memTemplItemLeft" nowrap align="right" valign="top">T_type& </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="namespacesigc.html#a319">unwrap</a> (T_type& v)</td></tr>
<tr><td class="memTemplParams" nowrap colspan="2">template<class T_type> </td></tr>
<tr><td class="memTemplItemLeft" nowrap align="right" valign="top">const T_type& </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="namespacesigc.html#a320">unwrap</a> (const T_type& v)</td></tr>
<tr><td class="memTemplParams" nowrap colspan="2">template<class T_type> </td></tr>
<tr><td class="memTemplItemLeft" nowrap align="right" valign="top">T_type& </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="namespacesigc.html#a321">unwrap</a> (const reference_wrapper<T_type>& v)</td></tr>
<tr><td class="memTemplParams" nowrap colspan="2">template<class T_type> </td></tr>
<tr><td class="memTemplItemLeft" nowrap align="right" valign="top">const T_type& </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="namespacesigc.html#a322">unwrap</a> (const const_reference_wrapper<T_type>& v)</td></tr>
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<hr><h2>Function Documentation</h2>
<a class="anchor" name="file_a318" doxytag="reference_wrapper.h::ref"></a><p>
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template <class T_type> </td>
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<td class="md" nowrap valign="top">const_reference_wrapper<T_type> ref </td>
<td class="md" valign="top">(</td>
<td class="md" nowrap valign="top">const T_type& </td>
<td class="mdname1" valign="top" nowrap> <em>v</em> </td>
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<p>
Creates a const reference wrapper.
<p>
Passing an object throught <a class="el" href="namespacesigc.html#a317">sigc::ref()</a> makes libsigc++ adaptors like, e.g., <a class="el" href="group__bind.html#ga8">sigc::bind</a> store references to the object instead of copies. If the object type inherits from <a class="el" href="structsigc_1_1trackable.html">sigc::trackable</a> this will ensure automatic invalidation of the adaptors when the object is deleted or overwritten.<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>v</em> </td><td>Reference to store. </td></tr>
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</dl>
<dl compact><dt><b>Returns:</b></dt><dd>A reference wrapper. </dd></dl>
</td>
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<a class="anchor" name="file_a317" doxytag="reference_wrapper.h::ref"></a><p>
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template <class T_type> </td>
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<td class="md" nowrap valign="top">reference_wrapper<T_type> ref </td>
<td class="md" valign="top">(</td>
<td class="md" nowrap valign="top">T_type& </td>
<td class="mdname1" valign="top" nowrap> <em>v</em> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap></td>
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<p>
Creates a reference wrapper.
<p>
Passing an object throught <a class="el" href="namespacesigc.html#a317">sigc::ref()</a> makes libsigc++ adaptors like, e.g., <a class="el" href="group__bind.html#ga8">sigc::bind</a> store references to the object instead of copies. If the object type inherits from <a class="el" href="structsigc_1_1trackable.html">sigc::trackable</a> this will ensure automatic invalidation of the adaptors when the object is deleted or overwritten.<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>v</em> </td><td>Reference to store. </td></tr>
</table>
</dl>
<dl compact><dt><b>Returns:</b></dt><dd>A reference wrapper. </dd></dl>
</td>
</tr>
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<a class="anchor" name="file_a322" doxytag="reference_wrapper.h::unwrap"></a><p>
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template <class T_type> </td>
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<td class="md" nowrap valign="top">const T_type& unwrap </td>
<td class="md" valign="top">(</td>
<td class="md" nowrap valign="top">const const_reference_wrapper<T_type>& </td>
<td class="mdname1" valign="top" nowrap> <em>v</em> </td>
<td class="md" valign="top"> ) </td>
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template <class T_type> </td>
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<td class="md" valign="top">(</td>
<td class="md" nowrap valign="top">const reference_wrapper<T_type>& </td>
<td class="mdname1" valign="top" nowrap> <em>v</em> </td>
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<a class="anchor" name="file_a320" doxytag="reference_wrapper.h::unwrap"></a><p>
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template <class T_type> </td>
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<td class="md" valign="top">(</td>
<td class="md" nowrap valign="top">const T_type& </td>
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template <class T_type> </td>
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<td class="md" nowrap valign="top">T_type& unwrap </td>
<td class="md" valign="top">(</td>
<td class="md" nowrap valign="top">T_type& </td>
<td class="mdname1" valign="top" nowrap> <em>v</em> </td>
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