TorqueEngine
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Torque2D
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  <div class="summary">
<a href="#pub-methods">Public Member Functions</a> &#124;
<a href="class_ti_xml_handle-members.html">List of all members</a>  </div>
  <div class="headertitle"><div class="title">TiXmlHandle Class Reference</div></div>
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<p><code>#include &lt;tinyxml.h&gt;</code></p>
<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a id="pub-methods" name="pub-methods"></a>
Public Member Functions</h2></td></tr>
<tr class="memitem:a7a91f73db1ec65f60edf6c3351e9085a" id="r_a7a91f73db1ec65f60edf6c3351e9085a"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_ti_xml_handle.html#a7a91f73db1ec65f60edf6c3351e9085a">TiXmlHandle</a> (<a class="el" href="class_ti_xml_node.html">TiXmlNode</a> *_node)</td></tr>
<tr class="memdesc:a7a91f73db1ec65f60edf6c3351e9085a"><td class="mdescLeft">&#160;</td><td class="mdescRight">Create a handle from any node (at any depth of the tree.) This can be a null pointer.  <br /></td></tr>
<tr class="separator:a7a91f73db1ec65f60edf6c3351e9085a"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ac9e2921a67990ee459e075bb6f79ab6c" id="r_ac9e2921a67990ee459e075bb6f79ab6c"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_ti_xml_handle.html#ac9e2921a67990ee459e075bb6f79ab6c">TiXmlHandle</a> (const <a class="el" href="class_ti_xml_handle.html">TiXmlHandle</a> &amp;ref)</td></tr>
<tr class="memdesc:ac9e2921a67990ee459e075bb6f79ab6c"><td class="mdescLeft">&#160;</td><td class="mdescRight">Copy constructor.  <br /></td></tr>
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<tr class="memitem:ae3825271aa876075ea2a1c560afbf312" id="r_ae3825271aa876075ea2a1c560afbf312"><td class="memItemLeft" align="right" valign="top"><a class="el" href="class_ti_xml_handle.html">TiXmlHandle</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_ti_xml_handle.html#ae3825271aa876075ea2a1c560afbf312">operator=</a> (const <a class="el" href="class_ti_xml_handle.html">TiXmlHandle</a> &amp;ref)</td></tr>
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<tr class="memitem:a0412758f77d3ad9cb093c110406a1057" id="r_a0412758f77d3ad9cb093c110406a1057"><td class="memItemLeft" align="right" valign="top"><a class="el" href="class_ti_xml_handle.html">TiXmlHandle</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_ti_xml_handle.html#a0412758f77d3ad9cb093c110406a1057">FirstChild</a> () const</td></tr>
<tr class="memdesc:a0412758f77d3ad9cb093c110406a1057"><td class="mdescLeft">&#160;</td><td class="mdescRight">Return a handle to the first child node.  <br /></td></tr>
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<tr class="memdesc:a1a8f11a10f707eda712b95821f3118e2"><td class="mdescLeft">&#160;</td><td class="mdescRight">Return a handle to the first child node with the given name.  <br /></td></tr>
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<tr class="memdesc:aa99c5c8813acef3c1c80ca84ce7272fd"><td class="mdescLeft">&#160;</td><td class="mdescRight">Return a handle to the first child element.  <br /></td></tr>
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<tr class="memdesc:af38f1b9f7c56d9ac044f2d803d87f98d"><td class="mdescLeft">&#160;</td><td class="mdescRight">Return a handle to the first child element with the given name.  <br /></td></tr>
<tr class="separator:af38f1b9f7c56d9ac044f2d803d87f98d"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a2950cec05b658eb5c6ad975901e9d2ea" id="r_a2950cec05b658eb5c6ad975901e9d2ea"><td class="memItemLeft" align="right" valign="top"><a class="el" href="class_ti_xml_handle.html">TiXmlHandle</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_ti_xml_handle.html#a2950cec05b658eb5c6ad975901e9d2ea">Child</a> (const char *value, int index) const</td></tr>
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<tr class="memitem:a9bba94e607e76da076e1b4cddc79ddf7" id="r_a9bba94e607e76da076e1b4cddc79ddf7"><td class="memItemLeft" align="right" valign="top"><a class="el" href="class_ti_xml_handle.html">TiXmlHandle</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_ti_xml_handle.html#a9bba94e607e76da076e1b4cddc79ddf7">Child</a> (int index) const</td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>A <a class="el" href="class_ti_xml_handle.html">TiXmlHandle</a> is a class that wraps a node pointer with null checks; this is an incredibly useful thing. Note that <a class="el" href="class_ti_xml_handle.html">TiXmlHandle</a> is not part of the TinyXml DOM structure. It is a separate utility class.</p>
<p>Take an example: </p><pre class="fragment">&lt;Document&gt;
    &lt;Element attributeA = "valueA"&gt;
        &lt;Child attributeB = "value1" /&gt;
        &lt;Child attributeB = "value2" /&gt;
    &lt;/Element&gt;
&lt;Document&gt;
</pre><p>Assuming you want the value of "attributeB" in the 2nd "Child" element, it's very easy to write a <em>lot</em> of code that looks like:</p>
<pre class="fragment">TiXmlElement* root = document.FirstChildElement( "Document" );
if ( root )
{
    TiXmlElement* element = root-&gt;FirstChildElement( "Element" );
    if ( element )
    {
        TiXmlElement* child = element-&gt;FirstChildElement( "Child" );
        if ( child )
        {
            TiXmlElement* child2 = child-&gt;NextSiblingElement( "Child" );
            if ( child2 )
            {
                // Finally do something useful.
</pre><p>And that doesn't even cover "else" cases. <a class="el" href="class_ti_xml_handle.html">TiXmlHandle</a> addresses the verbosity of such code. A <a class="el" href="class_ti_xml_handle.html">TiXmlHandle</a> checks for null pointers so it is perfectly safe and correct to use:</p>
<pre class="fragment">TiXmlHandle docHandle( &amp;document );
TiXmlElement* child2 = docHandle.FirstChild( "Document" ).FirstChild( "Element" ).Child( "Child", 1 ).ToElement();
if ( child2 )
{
    // do something useful
</pre><p>Which is MUCH more concise and useful.</p>
<p>It is also safe to copy handles - internally they are nothing more than node pointers. </p><pre class="fragment">TiXmlHandle handleCopy = handle;
</pre><p>What they should not be used for is iteration:</p>
<pre class="fragment">int i=0; 
while ( true )
{
    TiXmlElement* child = docHandle.FirstChild( "Document" ).FirstChild( "Element" ).Child( "Child", i ).ToElement();
    if ( !child )
        break;
    // do something
    ++i;
}
</pre><p>It seems reasonable, but it is in fact two embedded while loops. The Child method is a linear walk to find the element, so this code would iterate much more than it needs to. Instead, prefer:</p>
<pre class="fragment">TiXmlElement* child = docHandle.FirstChild( "Document" ).FirstChild( "Element" ).FirstChild( "Child" ).ToElement();

for( child; child; child=child-&gt;NextSiblingElement() )
{
    // do something
}
</pre> </div><h2 class="groupheader">Constructor &amp; Destructor Documentation</h2>
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<h2 class="memtitle"><span class="permalink"><a href="#a7a91f73db1ec65f60edf6c3351e9085a">&#9670;&#160;</a></span>TiXmlHandle() <span class="overload">[1/2]</span></h2>

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          <td>(</td>
          <td class="paramtype"><a class="el" href="class_ti_xml_node.html">TiXmlNode</a> *&#160;</td>
          <td class="paramname"><em>_node</em></td><td>)</td>
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<p>Create a handle from any node (at any depth of the tree.) This can be a null pointer. </p>

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<h2 class="memtitle"><span class="permalink"><a href="#ac9e2921a67990ee459e075bb6f79ab6c">&#9670;&#160;</a></span>TiXmlHandle() <span class="overload">[2/2]</span></h2>

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          <td>(</td>
          <td class="paramtype">const <a class="el" href="class_ti_xml_handle.html">TiXmlHandle</a> &amp;&#160;</td>
          <td class="paramname"><em>ref</em></td><td>)</td>
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<p>Copy constructor. </p>

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<h2 class="groupheader">Member Function Documentation</h2>
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<h2 class="memtitle"><span class="permalink"><a href="#a2950cec05b658eb5c6ad975901e9d2ea">&#9670;&#160;</a></span>Child() <span class="overload">[1/2]</span></h2>

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          <td class="memname"><a class="el" href="class_ti_xml_handle.html">TiXmlHandle</a> Child </td>
          <td>(</td>
          <td class="paramtype">const char *&#160;</td>
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          <td class="paramtype">int&#160;</td>
          <td class="paramname"><em>index</em>&#160;</td>
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<p>Return a handle to the "index" child with the given name. The first child is 0, the second 1, etc. </p>

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<h2 class="memtitle"><span class="permalink"><a href="#a9bba94e607e76da076e1b4cddc79ddf7">&#9670;&#160;</a></span>Child() <span class="overload">[2/2]</span></h2>

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          <td class="memname"><a class="el" href="class_ti_xml_handle.html">TiXmlHandle</a> Child </td>
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          <td class="paramname"><em>index</em></td><td>)</td>
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<p>Return a handle to the "index" child. The first child is 0, the second 1, etc. </p>

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<h2 class="memtitle"><span class="permalink"><a href="#a0ef26d69077feb46be89690a921ee9c3">&#9670;&#160;</a></span>ChildElement() <span class="overload">[1/2]</span></h2>

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          <td class="memname"><a class="el" href="class_ti_xml_handle.html">TiXmlHandle</a> ChildElement </td>
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<p>Return a handle to the "index" child element with the given name. The first child element is 0, the second 1, etc. Note that only TiXmlElements are indexed: other types are not counted. </p>

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<h2 class="memtitle"><span class="permalink"><a href="#ae1f829070e40275132045935f3bda40f">&#9670;&#160;</a></span>ChildElement() <span class="overload">[2/2]</span></h2>

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          <td class="memname"><a class="el" href="class_ti_xml_handle.html">TiXmlHandle</a> ChildElement </td>
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<p>Return a handle to the "index" child element. The first child element is 0, the second 1, etc. Note that only TiXmlElements are indexed: other types are not counted. </p>

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<h2 class="memtitle"><span class="permalink"><a href="#a01015d25c27453b8efedd07023a52902">&#9670;&#160;</a></span>Element()</h2>

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          <td class="memname"><a class="el" href="class_ti_xml_element.html">TiXmlElement</a> * Element </td>
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<dl class="deprecated"><dt><b><a class="el" href="deprecated.html#_deprecated000008">Deprecated:</a></b></dt><dd>use ToElement. Return the handle as a <a class="el" href="class_ti_xml_element.html">TiXmlElement</a>. This may return null. </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#a0412758f77d3ad9cb093c110406a1057">&#9670;&#160;</a></span>FirstChild() <span class="overload">[1/2]</span></h2>

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          <td class="memname"><a class="el" href="class_ti_xml_handle.html">TiXmlHandle</a> FirstChild </td>
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<p>Return a handle to the first child node. </p>

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<h2 class="memtitle"><span class="permalink"><a href="#a1a8f11a10f707eda712b95821f3118e2">&#9670;&#160;</a></span>FirstChild() <span class="overload">[2/2]</span></h2>

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          <td class="memname"><a class="el" href="class_ti_xml_handle.html">TiXmlHandle</a> FirstChild </td>
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<p>Return a handle to the first child node with the given name. </p>

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          <td class="memname"><a class="el" href="class_ti_xml_handle.html">TiXmlHandle</a> FirstChildElement </td>
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<p>Return a handle to the first child element. </p>

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<h2 class="memtitle"><span class="permalink"><a href="#af38f1b9f7c56d9ac044f2d803d87f98d">&#9670;&#160;</a></span>FirstChildElement() <span class="overload">[2/2]</span></h2>

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          <td class="memname"><a class="el" href="class_ti_xml_handle.html">TiXmlHandle</a> FirstChildElement </td>
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<p>Return a handle to the first child element with the given name. </p>

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<h2 class="memtitle"><span class="permalink"><a href="#a4ca766e59189e89d265d19f6d8c7f8a7">&#9670;&#160;</a></span>Node()</h2>

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<dl class="deprecated"><dt><b><a class="el" href="deprecated.html#_deprecated000007">Deprecated:</a></b></dt><dd>use ToNode. Return the handle as a <a class="el" href="class_ti_xml_node.html">TiXmlNode</a>. This may return null. </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#ae3825271aa876075ea2a1c560afbf312">&#9670;&#160;</a></span>operator=()</h2>

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          <td class="paramtype">const <a class="el" href="class_ti_xml_handle.html">TiXmlHandle</a> &amp;&#160;</td>
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<h2 class="memtitle"><span class="permalink"><a href="#af82fc1b21e9f818832e4a5faec3f31d0">&#9670;&#160;</a></span>Text()</h2>

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<dl class="deprecated"><dt><b><a class="el" href="deprecated.html#_deprecated000009">Deprecated:</a></b></dt><dd>use <a class="el" href="class_ti_xml_handle.html#a325bb8a4eec80f1ccefe4e3de7794538">ToText()</a> Return the handle as a <a class="el" href="class_ti_xml_text.html">TiXmlText</a>. This may return null. </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#ac78c81d3174d3eec8df96a3518ba7bf0">&#9670;&#160;</a></span>ToElement()</h2>

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<p>Return the handle as a <a class="el" href="class_ti_xml_element.html">TiXmlElement</a>. This may return null. </p>

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<h2 class="memtitle"><span class="permalink"><a href="#a42fdf9914e840360bb8eff62a4b57255">&#9670;&#160;</a></span>ToNode()</h2>

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<p>Return the handle as a <a class="el" href="class_ti_xml_node.html">TiXmlNode</a>. This may return null. </p>

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<h2 class="memtitle"><span class="permalink"><a href="#a325bb8a4eec80f1ccefe4e3de7794538">&#9670;&#160;</a></span>ToText()</h2>

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<p>Return the handle as a <a class="el" href="class_ti_xml_text.html">TiXmlText</a>. This may return null. </p>

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<h2 class="memtitle"><span class="permalink"><a href="#a33e755f70adf9637c638ec6854a8ac25">&#9670;&#160;</a></span>ToUnknown()</h2>

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<p>Return the handle as a <a class="el" href="class_ti_xml_unknown.html">TiXmlUnknown</a>. This may return null. </p>

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<h2 class="memtitle"><span class="permalink"><a href="#a6ef24cc293c3ccb6b31d7344bb87523d">&#9670;&#160;</a></span>Unknown()</h2>

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<dl class="deprecated"><dt><b><a class="el" href="deprecated.html#_deprecated000010">Deprecated:</a></b></dt><dd>use <a class="el" href="class_ti_xml_handle.html#a33e755f70adf9637c638ec6854a8ac25">ToUnknown()</a> Return the handle as a <a class="el" href="class_ti_xml_unknown.html">TiXmlUnknown</a>. This may return null. </dd></dl>

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<hr/>The documentation for this class was generated from the following files:<ul>
<li>persistence/tinyXML/<b>tinyxml.h</b></li>
<li>persistence/tinyXML/<b>tinyxml.cpp</b></li>
</ul>
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