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<li class="navelem"><a class="el" href="namespacerttr.html">rttr</a></li><li class="navelem"><a class="el" href="structrttr_1_1policy.html">policy</a></li><li class="navelem"><a class="el" href="structrttr_1_1policy_1_1prop.html">prop</a></li> </ul>
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<a href="#pub-static-attribs">Static Public Attributes</a> |
<a href="structrttr_1_1policy_1_1prop-members.html">List of all members</a> </div>
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<div class="title">rttr::policy::prop Struct Reference</div> </div>
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<p>The <a class="el" href="structrttr_1_1policy_1_1prop.html">prop</a> class groups all policies that can be used during registration of properties.
<a href="structrttr_1_1policy_1_1prop.html#details">More...</a></p>
<p><code>#include <<a class="el" href="policy_8h_source.html">policy.h</a>></code></p>
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Static Public Attributes</h2></td></tr>
<tr class="memitem:a6e551c5748cfaad0d8f1afc353817f78"><td class="memItemLeft" align="right" valign="top">static const detail::as_reference_wrapper </td><td class="memItemRight" valign="bottom"><a class="el" href="structrttr_1_1policy_1_1prop.html#a6e551c5748cfaad0d8f1afc353817f78">as_reference_wrapper</a></td></tr>
<tr class="memdesc:a6e551c5748cfaad0d8f1afc353817f78"><td class="mdescLeft"> </td><td class="mdescRight">The <a class="el" href="structrttr_1_1policy_1_1prop.html#a6e551c5748cfaad0d8f1afc353817f78">as_reference_wrapper</a> policy will bind a member object as <em>std::reference_wrapper</em> type. <a href="#a6e551c5748cfaad0d8f1afc353817f78">More...</a><br /></td></tr>
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<tr class="memitem:af18a7107143029acd396d39abfd8c94c"><td class="memItemLeft" align="right" valign="top">static const detail::bind_as_ptr </td><td class="memItemRight" valign="bottom"><a class="el" href="structrttr_1_1policy_1_1prop.html#af18a7107143029acd396d39abfd8c94c">bind_as_ptr</a></td></tr>
<tr class="memdesc:af18a7107143029acd396d39abfd8c94c"><td class="mdescLeft"> </td><td class="mdescRight">The <a class="el" href="structrttr_1_1policy_1_1prop.html#af18a7107143029acd396d39abfd8c94c">bind_as_ptr</a> policy will bind a member object as <em>pointer</em> type. <a href="#af18a7107143029acd396d39abfd8c94c">More...</a><br /></td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>The <a class="el" href="structrttr_1_1policy_1_1prop.html">prop</a> class groups all policies that can be used during registration of properties. </p>
</div><h2 class="groupheader">Member Data Documentation</h2>
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<h2 class="memtitle"><span class="permalink"><a href="#a6e551c5748cfaad0d8f1afc353817f78">◆ </a></span>as_reference_wrapper</h2>
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<td class="memname">const detail::as_reference_wrapper rttr::policy::prop::as_reference_wrapper</td>
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<p>The <a class="el" href="structrttr_1_1policy_1_1prop.html#a6e551c5748cfaad0d8f1afc353817f78">as_reference_wrapper</a> policy will bind a member object as <em>std::reference_wrapper</em> type. </p>
<p>This can be useful when binding big data types, like arrays, to avoid copies during get/set of the property.</p>
<p>See following example code: </p><div class="fragment"><div class="line"><span class="keyword">using namespace </span><a class="code" href="namespacerttr.html">rttr</a>;</div><div class="line"><span class="keyword">struct </span>Foo</div><div class="line">{</div><div class="line"> std::vector<int> vec;</div><div class="line">};</div><div class="line"></div><div class="line"><a class="code" href="registration_8h.html#ac6326400f16225ee15b52eabcaae8130">RTTR_REGISTRATION</a></div><div class="line">{</div><div class="line"> <a class="code" href="classrttr_1_1registration_1_1class__.html">registration::class_<Foo></a>(<span class="stringliteral">"Foo"</span>)</div><div class="line"> .<a class="code" href="classrttr_1_1registration_1_1class__.html#a005a60417fb6d183af475cb4059dc0a0">property</a>(<span class="stringliteral">"vec"</span>, &Foo::vec)</div><div class="line"> (</div><div class="line"> <a class="code" href="structrttr_1_1policy_1_1prop.html#a6e551c5748cfaad0d8f1afc353817f78">policy::prop::as_reference_wrapper</a></div><div class="line"> );</div><div class="line">}</div><div class="line"></div><div class="line"><span class="keywordtype">int</span> main()</div><div class="line">{</div><div class="line"> Foo obj;</div><div class="line"> <span class="keyword">property</span> prop = type::get<Foo>().get_property(<span class="stringliteral">"vec"</span>);</div><div class="line"> <a class="code" href="classrttr_1_1variant.html">variant</a> var = prop.<a class="code" href="classrttr_1_1variant.html#aa3a9f7e07cdc4d922a4e09882c5c0574">get_value</a>(obj);</div><div class="line"> std::cout << var.<a class="code" href="classrttr_1_1variant.html#a8a2fe635a8452ac3a2370589d6fc4bfb">is_type</a><std::reference_wrapper<std::vector<int>>>(); <span class="comment">// prints "true"</span></div><div class="line"> prop.set_value(obj, var); <span class="comment">// not really necessary, but remark that now a std::reference_wrapper<std::vector<int>> is expected</span></div><div class="line"> <span class="keywordflow">return</span> 0;</div><div class="line">}</div></div><!-- fragment -->
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<h2 class="memtitle"><span class="permalink"><a href="#af18a7107143029acd396d39abfd8c94c">◆ </a></span>bind_as_ptr</h2>
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<td class="memname">const detail::bind_as_ptr rttr::policy::prop::bind_as_ptr</td>
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<p>The <a class="el" href="structrttr_1_1policy_1_1prop.html#af18a7107143029acd396d39abfd8c94c">bind_as_ptr</a> policy will bind a member object as <em>pointer</em> type. </p>
<p>This can be useful when binding big data types, like arrays, to avoid copies during get/set of the property.</p>
<p>See following example code: </p><div class="fragment"><div class="line"><span class="keyword">using namespace </span><a class="code" href="namespacerttr.html">rttr</a>;</div><div class="line"><span class="keyword">struct </span>Foo</div><div class="line">{</div><div class="line"> std::vector<int> vec;</div><div class="line">};</div><div class="line"></div><div class="line"><a class="code" href="registration_8h.html#ac6326400f16225ee15b52eabcaae8130">RTTR_REGISTRATION</a></div><div class="line">{</div><div class="line"> <a class="code" href="classrttr_1_1registration_1_1class__.html">registration::class_<Foo></a>(<span class="stringliteral">"Foo"</span>)</div><div class="line"> .<a class="code" href="classrttr_1_1registration_1_1class__.html#a005a60417fb6d183af475cb4059dc0a0">property</a>(<span class="stringliteral">"vec"</span>, &Foo::vec)</div><div class="line"> (</div><div class="line"> <a class="code" href="structrttr_1_1policy_1_1prop.html#af18a7107143029acd396d39abfd8c94c">policy::prop::bind_as_ptr</a></div><div class="line"> );</div><div class="line">}</div><div class="line"></div><div class="line"><span class="keywordtype">int</span> main()</div><div class="line">{</div><div class="line"> Foo obj;</div><div class="line"> <span class="keyword">property</span> prop = type::get<Foo>().get_property(<span class="stringliteral">"vec"</span>);</div><div class="line"> <a class="code" href="classrttr_1_1variant.html">variant</a> var = prop.<a class="code" href="classrttr_1_1variant.html#aa3a9f7e07cdc4d922a4e09882c5c0574">get_value</a>(obj);</div><div class="line"> std::cout << var.<a class="code" href="classrttr_1_1variant.html#a8a2fe635a8452ac3a2370589d6fc4bfb">is_type</a><std::vector<int>*>(); <span class="comment">// prints "true"</span></div><div class="line"> prop.set_value(obj, var); <span class="comment">// not really necessary, but remark that now a std::vector<int>* is expected</span></div><div class="line"> <span class="keywordflow">return</span> 0;</div><div class="line">}</div></div><!-- fragment -->
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<hr/>The documentation for this struct was generated from the following file:<ul>
<li><a class="el" href="policy_8h_source.html">policy.h</a></li>
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