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  <h2>
    <span class="refentrytitle">list</span>
  </h2>
  <p>list - lists interfaces</p>
  <p>this module implement the list support used in various place in the library. </p>
  <p>Author(s): Gary Pennington &lt;Gary.Pennington@uk.sun.com&gt; </p>
  <div class="refsynopsisdiv">
    <h2>Synopsis</h2>
    <pre class="synopsis">typedef struct _xmlLink <a href="#xmlLink">xmlLink</a>;

typedef <a href=“libxml2-list.html#xmlLink”>xmlLink</a> * <a href=“#xmlLinkPtr”>xmlLinkPtr</a>; typedef struct _xmlList <a href=“#xmlList”>xmlList</a>; typedef <a href=“libxml2-list.html#xmlList”>xmlList</a> * <a href=“#xmlListPtr”>xmlListPtr</a>; int <a href=“#xmlListInsert”>xmlListInsert</a> (<a href=“libxml2-list.html#xmlListPtr”>xmlListPtr</a> l, <br/> void * data); int <a href=“#xmlListEmpty”>xmlListEmpty</a> (<a href=“libxml2-list.html#xmlListPtr”>xmlListPtr</a> l); void <a href=“#xmlListSort”>xmlListSort</a> (<a href=“libxml2-list.html#xmlListPtr”>xmlListPtr</a> l); typedef void <a href=“#xmlListDeallocator”>xmlListDeallocator</a> (<a href=“libxml2-list.html#xmlLinkPtr”>xmlLinkPtr</a> lk); void <a href=“#xmlListMerge”>xmlListMerge</a> (<a href=“libxml2-list.html#xmlListPtr”>xmlListPtr</a> l1, <br/> <a href=“libxml2-list.html#xmlListPtr”>xmlListPtr</a> l2); <a href=“libxml2-list.html#xmlListPtr”>xmlListPtr</a> <a href=“#xmlListCreate”>xmlListCreate</a> (<a href=“libxml2-list.html#xmlListDeallocator”>xmlListDeallocator</a> deallocator, <br/> <a href=“libxml2-list.html#xmlListDataCompare”>xmlListDataCompare</a> compare); <a href=“libxml2-list.html#xmlListPtr”>xmlListPtr</a> <a href=“#xmlListDup”>xmlListDup</a> (const <a href=“libxml2-list.html#xmlListPtr”>xmlListPtr</a> old); int <a href=“#xmlListRemoveLast”>xmlListRemoveLast</a> (<a href=“libxml2-list.html#xmlListPtr”>xmlListPtr</a> l, <br/> void * data); void <a href=“#xmlListWalk”>xmlListWalk</a> (<a href=“libxml2-list.html#xmlListPtr”>xmlListPtr</a> l, <br/> <a href=“libxml2-list.html#xmlListWalker”>xmlListWalker</a> walker, <br/> void * user); int <a href=“#xmlListRemoveAll”>xmlListRemoveAll</a> (<a href=“libxml2-list.html#xmlListPtr”>xmlListPtr</a> l, <br/> void * data); int <a href=“#xmlListCopy”>xmlListCopy</a> (<a href=“libxml2-list.html#xmlListPtr”>xmlListPtr</a> cur, <br/> const <a href=“libxml2-list.html#xmlListPtr”>xmlListPtr</a> old); void <a href=“#xmlListPopFront”>xmlListPopFront</a> (<a href=“libxml2-list.html#xmlListPtr”>xmlListPtr</a> l); void * <a href=“#xmlListSearch”>xmlListSearch</a> (<a href=“libxml2-list.html#xmlListPtr”>xmlListPtr</a> l, <br/> void * data); typedef int <a href=“#xmlListWalker”>xmlListWalker</a> (const void * data, <br/> void * user); int <a href=“#xmlListRemoveFirst”>xmlListRemoveFirst</a> (<a href=“libxml2-list.html#xmlListPtr”>xmlListPtr</a> l, <br/> void * data); void <a href=“#xmlListReverseWalk”>xmlListReverseWalk</a> (<a href=“libxml2-list.html#xmlListPtr”>xmlListPtr</a> l, <br/> <a href=“libxml2-list.html#xmlListWalker”>xmlListWalker</a> walker, <br/> void * user); void * <a href=“#xmlLinkGetData”>xmlLinkGetData</a> (<a href=“libxml2-list.html#xmlLinkPtr”>xmlLinkPtr</a> lk); void <a href=“#xmlListClear”>xmlListClear</a> (<a href=“libxml2-list.html#xmlListPtr”>xmlListPtr</a> l); int <a href=“#xmlListAppend”>xmlListAppend</a> (<a href=“libxml2-list.html#xmlListPtr”>xmlListPtr</a> l, <br/> void * data); void <a href=“#xmlListReverse”>xmlListReverse</a> (<a href=“libxml2-list.html#xmlListPtr”>xmlListPtr</a> l); typedef int <a href=“#xmlListDataCompare”>xmlListDataCompare</a> (const void * data0, <br/> const void * data1); int <a href=“#xmlListSize”>xmlListSize</a> (<a href=“libxml2-list.html#xmlListPtr”>xmlListPtr</a> l); int <a href=“#xmlListPushFront”>xmlListPushFront</a> (<a href=“libxml2-list.html#xmlListPtr”>xmlListPtr</a> l, <br/> void * data); <a href=“libxml2-list.html#xmlLinkPtr”>xmlLinkPtr</a> <a href=“#xmlListEnd”>xmlListEnd</a> (<a href=“libxml2-list.html#xmlListPtr”>xmlListPtr</a> l); void <a href=“#xmlListPopBack”>xmlListPopBack</a> (<a href=“libxml2-list.html#xmlListPtr”>xmlListPtr</a> l); void * <a href=“#xmlListReverseSearch”>xmlListReverseSearch</a> (<a href=“libxml2-list.html#xmlListPtr”>xmlListPtr</a> l, <br/> void * data); int <a href=“#xmlListPushBack”>xmlListPushBack</a> (<a href=“libxml2-list.html#xmlListPtr”>xmlListPtr</a> l, <br/> void * data); <a href=“libxml2-list.html#xmlLinkPtr”>xmlLinkPtr</a> <a href=“#xmlListFront”>xmlListFront</a> (<a href=“libxml2-list.html#xmlListPtr”>xmlListPtr</a> l); void <a href=“#xmlListDelete”>xmlListDelete</a> (<a href=“libxml2-list.html#xmlListPtr”>xmlListPtr</a> l); </pre>

</div>
<div class="refsect1" lang="en">
  <h2>Description</h2>
</div>
<div class="refsect1" lang="en">
  <h2>Details</h2>
  <div class="refsect2" lang="en">
    <div class="refsect2" lang="en"><h3><a name="xmlLink">Structure </a>xmlLink</h3><pre class="programlisting">struct _xmlLink {

The content of this structure is not made public by the API. } xmlLink; </pre><p/> </div>

<hr/>
<div class="refsect2" lang="en"><h3><a name="xmlLinkPtr">Typedef </a>xmlLinkPtr</h3><pre class="programlisting"><a href="libxml2-list.html#xmlLink">xmlLink</a> * xmlLinkPtr;

</pre><p/> </div>

<hr/>
<div class="refsect2" lang="en"><h3><a name="xmlList">Structure </a>xmlList</h3><pre class="programlisting">struct _xmlList {

The content of this structure is not made public by the API. } xmlList; </pre><p/> </div>

<hr/>
<div class="refsect2" lang="en"><h3><a name="xmlListPtr">Typedef </a>xmlListPtr</h3><pre class="programlisting"><a href="libxml2-list.html#xmlList">xmlList</a> * xmlListPtr;

</pre><p/> </div>

<hr/>
<div class="refsect2" lang="en"><h3><a name="xmlListDataCompare"/>Function type xmlListDataCompare</h3><pre class="programlisting">int  xmlListDataCompare              (const void * data0, <br/>                                       const void * data1)<br/>

</pre><p>Callback function used to compare 2 data.</p> <div class=“variablelist”><table border=“0”><col align=“left”/><tbody><tr><td><span class=“term”>data0:</span></td><td>the first data</td></tr><tr><td><span class=“term”>data1:</span></td><td>the second data</td></tr><tr><td><span class=“term”>Returns:</span></td><td>0 is equality, -1 or 1 otherwise depending on the ordering.</td></tr></tbody></table></div></div>

<hr/>
<div class="refsect2" lang="en"><h3><a name="xmlListDeallocator"/>Function type xmlListDeallocator</h3><pre class="programlisting">void xmlListDeallocator              (<a href="libxml2-list.html#xmlLinkPtr">xmlLinkPtr</a> lk)<br/>

</pre><p>Callback function used to free data from a list.</p> <div class=“variablelist”><table border=“0”><col align=“left”/><tbody><tr><td><span class=“term”>lk:</span></td><td>the data to deallocate</td></tr></tbody></table></div></div>

<hr/>
<div class="refsect2" lang="en"><h3><a name="xmlListWalker"/>Function type xmlListWalker</h3><pre class="programlisting">int    xmlListWalker                   (const void * data, <br/>                                        void * user)<br/>

</pre><p>Callback function used when walking a list with xmlListWalk().</p> <div class=“variablelist”><table border=“0”><col align=“left”/><tbody><tr><td><span class=“term”>data:</span></td><td>the data found in the list</td></tr><tr><td><span class=“term”>user:</span></td><td>extra user provided data to the walker</td></tr><tr><td><span class=“term”>Returns:</span></td><td>0 to stop walking the list, 1 otherwise.</td></tr></tbody></table></div></div>

<hr/>
<div class="refsect2" lang="en"><h3><a name="xmlLinkGetData"/>xmlLinkGetData ()</h3><pre class="programlisting">void *  xmlLinkGetData                  (<a href="libxml2-list.html#xmlLinkPtr">xmlLinkPtr</a> lk)<br/>

</pre><p>See Returns.</p> <div class=“variablelist”><table border=“0”><col align=“left”/><tbody><tr><td><span class=“term”>lk:</span></td><td>a link</td></tr><tr><td><span class=“term”>Returns:</span></td><td>a pointer to the data referenced from this link</td></tr></tbody></table></div></div>

<hr/>
<div class="refsect2" lang="en"><h3><a name="xmlListAppend"/>xmlListAppend ()</h3><pre class="programlisting">int       xmlListAppend                   (<a href="libxml2-list.html#xmlListPtr">xmlListPtr</a> l, <br/>                                  void * data)<br/>

</pre><p>Insert data in the ordered list at the end for this value</p> <div class=“variablelist”><table border=“0”><col align=“left”/><tbody><tr><td><span class=“term”>l:</span></td><td>a list</td></tr><tr><td><span class=“term”>data:</span></td><td>the data</td></tr><tr><td><span class=“term”>Returns:</span></td><td>0 in case of success, 1 in case of failure</td></tr></tbody></table></div></div>

<hr/>
<div class="refsect2" lang="en"><h3><a name="xmlListClear"/>xmlListClear ()</h3><pre class="programlisting">void        xmlListClear                    (<a href="libxml2-list.html#xmlListPtr">xmlListPtr</a> l)<br/>

</pre><p>Remove the all data in the list</p> <div class=“variablelist”><table border=“0”><col align=“left”/><tbody><tr><td><span class=“term”>l:</span></td><td>a list</td></tr></tbody></table></div></div>

<hr/>
<div class="refsect2" lang="en"><h3><a name="xmlListCopy"/>xmlListCopy ()</h3><pre class="programlisting">int   xmlListCopy                     (<a href="libxml2-list.html#xmlListPtr">xmlListPtr</a> cur, <br/>                                        const <a href="libxml2-list.html#xmlListPtr">xmlListPtr</a> old)<br/>

</pre><p>Move all the element from the old list in the new list</p> <div class=“variablelist”><table border=“0”><col align=“left”/><tbody><tr><td><span class=“term”>cur:</span></td><td>the new list</td></tr><tr><td><span class=“term”>old:</span></td><td>the old list</td></tr><tr><td><span class=“term”>Returns:</span></td><td>0 in case of success 1 in case of error</td></tr></tbody></table></div></div>

<hr/>
<div class="refsect2" lang="en"><h3><a name="xmlListCreate"/>xmlListCreate ()</h3><pre class="programlisting"><a href="libxml2-list.html#xmlListPtr">xmlListPtr</a>     xmlListCreate           (<a href="libxml2-list.html#xmlListDeallocator">xmlListDeallocator</a> deallocator, <br/>                                        <a href="libxml2-list.html#xmlListDataCompare">xmlListDataCompare</a> compare)<br/>

</pre><p>Create a new list</p> <div class=“variablelist”><table border=“0”><col align=“left”/><tbody><tr><td><span class=“term”>deallocator:</span></td><td>an optional deallocator function</td></tr><tr><td><span class=“term”>compare:</span></td><td>an optional comparison function</td></tr><tr><td><span class=“term”>Returns:</span></td><td>the new list or NULL in case of error</td></tr></tbody></table></div></div>

<hr/>
<div class="refsect2" lang="en"><h3><a name="xmlListDelete"/>xmlListDelete ()</h3><pre class="programlisting">void      xmlListDelete                   (<a href="libxml2-list.html#xmlListPtr">xmlListPtr</a> l)<br/>

</pre><p>Deletes the list and its associated data</p> <div class=“variablelist”><table border=“0”><col align=“left”/><tbody><tr><td><span class=“term”>l:</span></td><td>a list</td></tr></tbody></table></div></div>

<hr/>
<div class="refsect2" lang="en"><h3><a name="xmlListDup"/>xmlListDup ()</h3><pre class="programlisting"><a href="libxml2-list.html#xmlListPtr">xmlListPtr</a>   xmlListDup              (const <a href="libxml2-list.html#xmlListPtr">xmlListPtr</a> old)<br/>

</pre><p>Duplicate the list</p> <div class=“variablelist”><table border=“0”><col align=“left”/><tbody><tr><td><span class=“term”>old:</span></td><td>the list</td></tr><tr><td><span class=“term”>Returns:</span></td><td>a new copy of the list or NULL in case of error</td></tr></tbody></table></div></div>

<hr/>
<div class="refsect2" lang="en"><h3><a name="xmlListEmpty"/>xmlListEmpty ()</h3><pre class="programlisting">int xmlListEmpty                    (<a href="libxml2-list.html#xmlListPtr">xmlListPtr</a> l)<br/>

</pre><p>Is the list empty ?</p> <div class=“variablelist”><table border=“0”><col align=“left”/><tbody><tr><td><span class=“term”>l:</span></td><td>a list</td></tr><tr><td><span class=“term”>Returns:</span></td><td>1 if the list is empty, 0 if not empty and -1 in case of error</td></tr></tbody></table></div></div>

<hr/>
<div class="refsect2" lang="en"><h3><a name="xmlListEnd"/>xmlListEnd ()</h3><pre class="programlisting"><a href="libxml2-list.html#xmlLinkPtr">xmlLinkPtr</a>   xmlListEnd              (<a href="libxml2-list.html#xmlListPtr">xmlListPtr</a> l)<br/>

</pre><p>Get the last element in the list</p> <div class=“variablelist”><table border=“0”><col align=“left”/><tbody><tr><td><span class=“term”>l:</span></td><td>a list</td></tr><tr><td><span class=“term”>Returns:</span></td><td>the last element in the list, or NULL</td></tr></tbody></table></div></div>

<hr/>
<div class="refsect2" lang="en"><h3><a name="xmlListFront"/>xmlListFront ()</h3><pre class="programlisting"><a href="libxml2-list.html#xmlLinkPtr">xmlLinkPtr</a>       xmlListFront            (<a href="libxml2-list.html#xmlListPtr">xmlListPtr</a> l)<br/>

</pre><p>Get the first element in the list</p> <div class=“variablelist”><table border=“0”><col align=“left”/><tbody><tr><td><span class=“term”>l:</span></td><td>a list</td></tr><tr><td><span class=“term”>Returns:</span></td><td>the first element in the list, or NULL</td></tr></tbody></table></div></div>

<hr/>
<div class="refsect2" lang="en"><h3><a name="xmlListInsert"/>xmlListInsert ()</h3><pre class="programlisting">int       xmlListInsert                   (<a href="libxml2-list.html#xmlListPtr">xmlListPtr</a> l, <br/>                                  void * data)<br/>

</pre><p>Insert data in the ordered list at the beginning for this value</p> <div class=“variablelist”><table border=“0”><col align=“left”/><tbody><tr><td><span class=“term”>l:</span></td><td>a list</td></tr><tr><td><span class=“term”>data:</span></td><td>the data</td></tr><tr><td><span class=“term”>Returns:</span></td><td>0 in case of success, 1 in case of failure</td></tr></tbody></table></div></div>

<hr/>
<div class="refsect2" lang="en"><h3><a name="xmlListMerge"/>xmlListMerge ()</h3><pre class="programlisting">void        xmlListMerge                    (<a href="libxml2-list.html#xmlListPtr">xmlListPtr</a> l1, <br/>                                         <a href="libxml2-list.html#xmlListPtr">xmlListPtr</a> l2)<br/>

</pre><p>include all the elements of the second list in the first one and clear the second list</p> <div class=“variablelist”><table border=“0”><col align=“left”/><tbody><tr><td><span class=“term”>l1:</span></td><td>the original list</td></tr><tr><td><span class=“term”>l2:</span></td><td>the new list</td></tr></tbody></table></div></div>

<hr/>
<div class="refsect2" lang="en"><h3><a name="xmlListPopBack"/>xmlListPopBack ()</h3><pre class="programlisting">void    xmlListPopBack                  (<a href="libxml2-list.html#xmlListPtr">xmlListPtr</a> l)<br/>

</pre><p>Removes the last element in the list</p> <div class=“variablelist”><table border=“0”><col align=“left”/><tbody><tr><td><span class=“term”>l:</span></td><td>a list</td></tr></tbody></table></div></div>

<hr/>
<div class="refsect2" lang="en"><h3><a name="xmlListPopFront"/>xmlListPopFront ()</h3><pre class="programlisting">void  xmlListPopFront                 (<a href="libxml2-list.html#xmlListPtr">xmlListPtr</a> l)<br/>

</pre><p>Removes the first element in the list</p> <div class=“variablelist”><table border=“0”><col align=“left”/><tbody><tr><td><span class=“term”>l:</span></td><td>a list</td></tr></tbody></table></div></div>

<hr/>
<div class="refsect2" lang="en"><h3><a name="xmlListPushBack"/>xmlListPushBack ()</h3><pre class="programlisting">int   xmlListPushBack                 (<a href="libxml2-list.html#xmlListPtr">xmlListPtr</a> l, <br/>                                  void * data)<br/>

</pre><p>add the new data at the end of the list</p> <div class=“variablelist”><table border=“0”><col align=“left”/><tbody><tr><td><span class=“term”>l:</span></td><td>a list</td></tr><tr><td><span class=“term”>data:</span></td><td>new data</td></tr><tr><td><span class=“term”>Returns:</span></td><td>1 if successful, 0 otherwise</td></tr></tbody></table></div></div>

<hr/>
<div class="refsect2" lang="en"><h3><a name="xmlListPushFront"/>xmlListPushFront ()</h3><pre class="programlisting">int xmlListPushFront                (<a href="libxml2-list.html#xmlListPtr">xmlListPtr</a> l, <br/>                                  void * data)<br/>

</pre><p>add the new data at the beginning of the list</p> <div class=“variablelist”><table border=“0”><col align=“left”/><tbody><tr><td><span class=“term”>l:</span></td><td>a list</td></tr><tr><td><span class=“term”>data:</span></td><td>new data</td></tr><tr><td><span class=“term”>Returns:</span></td><td>1 if successful, 0 otherwise</td></tr></tbody></table></div></div>

<hr/>
<div class="refsect2" lang="en"><h3><a name="xmlListRemoveAll"/>xmlListRemoveAll ()</h3><pre class="programlisting">int xmlListRemoveAll                (<a href="libxml2-list.html#xmlListPtr">xmlListPtr</a> l, <br/>                                  void * data)<br/>

</pre><p>Remove the all instance associated to data in the list</p> <div class=“variablelist”><table border=“0”><col align=“left”/><tbody><tr><td><span class=“term”>l:</span></td><td>a list</td></tr><tr><td><span class=“term”>data:</span></td><td>list data</td></tr><tr><td><span class=“term”>Returns:</span></td><td>the number of deallocation, or 0 if not found</td></tr></tbody></table></div></div>

<hr/>
<div class="refsect2" lang="en"><h3><a name="xmlListRemoveFirst"/>xmlListRemoveFirst ()</h3><pre class="programlisting">int     xmlListRemoveFirst              (<a href="libxml2-list.html#xmlListPtr">xmlListPtr</a> l, <br/>                                  void * data)<br/>

</pre><p>Remove the first instance associated to data in the list</p> <div class=“variablelist”><table border=“0”><col align=“left”/><tbody><tr><td><span class=“term”>l:</span></td><td>a list</td></tr><tr><td><span class=“term”>data:</span></td><td>list data</td></tr><tr><td><span class=“term”>Returns:</span></td><td>1 if a deallocation occurred, or 0 if not found</td></tr></tbody></table></div></div>

<hr/>
<div class="refsect2" lang="en"><h3><a name="xmlListRemoveLast"/>xmlListRemoveLast ()</h3><pre class="programlisting">int       xmlListRemoveLast               (<a href="libxml2-list.html#xmlListPtr">xmlListPtr</a> l, <br/>                                  void * data)<br/>

</pre><p>Remove the last instance associated to data in the list</p> <div class=“variablelist”><table border=“0”><col align=“left”/><tbody><tr><td><span class=“term”>l:</span></td><td>a list</td></tr><tr><td><span class=“term”>data:</span></td><td>list data</td></tr><tr><td><span class=“term”>Returns:</span></td><td>1 if a deallocation occurred, or 0 if not found</td></tr></tbody></table></div></div>

<hr/>
<div class="refsect2" lang="en"><h3><a name="xmlListReverse"/>xmlListReverse ()</h3><pre class="programlisting">void    xmlListReverse                  (<a href="libxml2-list.html#xmlListPtr">xmlListPtr</a> l)<br/>

</pre><p>Reverse the order of the elements in the list</p> <div class=“variablelist”><table border=“0”><col align=“left”/><tbody><tr><td><span class=“term”>l:</span></td><td>a list</td></tr></tbody></table></div></div>

<hr/>
<div class="refsect2" lang="en"><h3><a name="xmlListReverseSearch"/>xmlListReverseSearch ()</h3><pre class="programlisting">void *      xmlListReverseSearch            (<a href="libxml2-list.html#xmlListPtr">xmlListPtr</a> l, <br/>                                  void * data)<br/>

</pre><p>Search the list in reverse order for an existing value of @data</p> <div class=“variablelist”><table border=“0”><col align=“left”/><tbody><tr><td><span class=“term”>l:</span></td><td>a list</td></tr><tr><td><span class=“term”>data:</span></td><td>a search value</td></tr><tr><td><span class=“term”>Returns:</span></td><td>the value associated to @data or NULL in case of error</td></tr></tbody></table></div></div>

<hr/>
<div class="refsect2" lang="en"><h3><a name="xmlListReverseWalk"/>xmlListReverseWalk ()</h3><pre class="programlisting">void    xmlListReverseWalk              (<a href="libxml2-list.html#xmlListPtr">xmlListPtr</a> l, <br/>                                  <a href="libxml2-list.html#xmlListWalker">xmlListWalker</a> walker, <br/>                                       void * user)<br/>

</pre><p>Walk all the element of the list in reverse order and apply the walker function to it</p> <div class=“variablelist”><table border=“0”><col align=“left”/><tbody><tr><td><span class=“term”>l:</span></td><td>a list</td></tr><tr><td><span class=“term”>walker:</span></td><td>a processing function</td></tr><tr><td><span class=“term”>user:</span></td><td>a user parameter passed to the walker function</td></tr></tbody></table></div></div>

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<div class="refsect2" lang="en"><h3><a name="xmlListSearch"/>xmlListSearch ()</h3><pre class="programlisting">void *    xmlListSearch                   (<a href="libxml2-list.html#xmlListPtr">xmlListPtr</a> l, <br/>                                  void * data)<br/>

</pre><p>Search the list for an existing value of @data</p> <div class=“variablelist”><table border=“0”><col align=“left”/><tbody><tr><td><span class=“term”>l:</span></td><td>a list</td></tr><tr><td><span class=“term”>data:</span></td><td>a search value</td></tr><tr><td><span class=“term”>Returns:</span></td><td>the value associated to @data or NULL in case of error</td></tr></tbody></table></div></div>

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<div class="refsect2" lang="en"><h3><a name="xmlListSize"/>xmlListSize ()</h3><pre class="programlisting">int   xmlListSize                     (<a href="libxml2-list.html#xmlListPtr">xmlListPtr</a> l)<br/>

</pre><p>Get the number of elements in the list</p> <div class=“variablelist”><table border=“0”><col align=“left”/><tbody><tr><td><span class=“term”>l:</span></td><td>a list</td></tr><tr><td><span class=“term”>Returns:</span></td><td>the number of elements in the list or -1 in case of error</td></tr></tbody></table></div></div>

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<div class="refsect2" lang="en"><h3><a name="xmlListSort"/>xmlListSort ()</h3><pre class="programlisting">void  xmlListSort                     (<a href="libxml2-list.html#xmlListPtr">xmlListPtr</a> l)<br/>

</pre><p>Sort all the elements in the list</p> <div class=“variablelist”><table border=“0”><col align=“left”/><tbody><tr><td><span class=“term”>l:</span></td><td>a list</td></tr></tbody></table></div></div>

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<div class="refsect2" lang="en"><h3><a name="xmlListWalk"/>xmlListWalk ()</h3><pre class="programlisting">void  xmlListWalk                     (<a href="libxml2-list.html#xmlListPtr">xmlListPtr</a> l, <br/>                                  <a href="libxml2-list.html#xmlListWalker">xmlListWalker</a> walker, <br/>                                       void * user)<br/>

</pre><p>Walk all the element of the first from first to last and apply the walker function to it</p> <div class=“variablelist”><table border=“0”><col align=“left”/><tbody><tr><td><span class=“term”>l:</span></td><td>a list</td></tr><tr><td><span class=“term”>walker:</span></td><td>a processing function</td></tr><tr><td><span class=“term”>user:</span></td><td>a user parameter passed to the walker function</td></tr></tbody></table></div></div>

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