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<title>hash: Chained hash tables</title>
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<h2><span class="refentrytitle">hash</span></h2>
<p>hash - Chained hash tables</p>
<p>This module implements the hash table support used in various places in the library. </p>
<p>Author(s): Bjorn Reese <bjorn.reese@systematic.dk> </p>
<div class="refsynopsisdiv">
<h2>Synopsis</h2>
<pre class="synopsis">#define <a href="#XML_CAST_FPTR">XML_CAST_FPTR</a>(fptr);
typedef struct _xmlHashTable <a href="#xmlHashTable">xmlHashTable</a>;
typedef <a href="libxml2-hash.html#xmlHashTable">xmlHashTable</a> * <a href="#xmlHashTablePtr">xmlHashTablePtr</a>;
int <a href="#xmlHashAddEntry">xmlHashAddEntry</a> (<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br> void * userdata);
int <a href="#xmlHashAddEntry2">xmlHashAddEntry2</a> (<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name2, <br> void * userdata);
int <a href="#xmlHashAddEntry3">xmlHashAddEntry3</a> (<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name2, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name3, <br> void * userdata);
typedef void * <a href="#xmlHashCopier">xmlHashCopier</a> (void * payload, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name);
<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> <a href="#xmlHashCopy">xmlHashCopy</a> (<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br> <a href="libxml2-hash.html#xmlHashCopier">xmlHashCopier</a> f);
<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> <a href="#xmlHashCreate">xmlHashCreate</a> (int size);
<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> <a href="#xmlHashCreateDict">xmlHashCreateDict</a> (int size, <br> <a href="libxml2-dict.html#xmlDictPtr">xmlDictPtr</a> dict);
typedef void <a href="#xmlHashDeallocator">xmlHashDeallocator</a> (void * payload, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name);
void <a href="#xmlHashDefaultDeallocator">xmlHashDefaultDeallocator</a> (void * entry, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name);
void <a href="#xmlHashFree">xmlHashFree</a> (<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br> <a href="libxml2-hash.html#xmlHashDeallocator">xmlHashDeallocator</a> f);
void * <a href="#xmlHashLookup">xmlHashLookup</a> (<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name);
void * <a href="#xmlHashLookup2">xmlHashLookup2</a> (<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name2);
void * <a href="#xmlHashLookup3">xmlHashLookup3</a> (<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name2, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name3);
void * <a href="#xmlHashQLookup">xmlHashQLookup</a> (<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * prefix, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name);
void * <a href="#xmlHashQLookup2">xmlHashQLookup2</a> (<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * prefix, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * prefix2, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name2);
void * <a href="#xmlHashQLookup3">xmlHashQLookup3</a> (<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * prefix, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * prefix2, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name2, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * prefix3, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name3);
int <a href="#xmlHashRemoveEntry">xmlHashRemoveEntry</a> (<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br> <a href="libxml2-hash.html#xmlHashDeallocator">xmlHashDeallocator</a> f);
int <a href="#xmlHashRemoveEntry2">xmlHashRemoveEntry2</a> (<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name2, <br> <a href="libxml2-hash.html#xmlHashDeallocator">xmlHashDeallocator</a> f);
int <a href="#xmlHashRemoveEntry3">xmlHashRemoveEntry3</a> (<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name2, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name3, <br> <a href="libxml2-hash.html#xmlHashDeallocator">xmlHashDeallocator</a> f);
void <a href="#xmlHashScan">xmlHashScan</a> (<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br> <a href="libxml2-hash.html#xmlHashScanner">xmlHashScanner</a> f, <br> void * data);
void <a href="#xmlHashScan3">xmlHashScan3</a> (<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name2, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name3, <br> <a href="libxml2-hash.html#xmlHashScanner">xmlHashScanner</a> f, <br> void * data);
void <a href="#xmlHashScanFull">xmlHashScanFull</a> (<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br> <a href="libxml2-hash.html#xmlHashScannerFull">xmlHashScannerFull</a> f, <br> void * data);
void <a href="#xmlHashScanFull3">xmlHashScanFull3</a> (<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name2, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name3, <br> <a href="libxml2-hash.html#xmlHashScannerFull">xmlHashScannerFull</a> f, <br> void * data);
typedef void <a href="#xmlHashScanner">xmlHashScanner</a> (void * payload, <br> void * data, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name);
typedef void <a href="#xmlHashScannerFull">xmlHashScannerFull</a> (void * payload, <br> void * data, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name2, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name3);
int <a href="#xmlHashSize">xmlHashSize</a> (<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table);
int <a href="#xmlHashUpdateEntry">xmlHashUpdateEntry</a> (<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br> void * userdata, <br> <a href="libxml2-hash.html#xmlHashDeallocator">xmlHashDeallocator</a> f);
int <a href="#xmlHashUpdateEntry2">xmlHashUpdateEntry2</a> (<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name2, <br> void * userdata, <br> <a href="libxml2-hash.html#xmlHashDeallocator">xmlHashDeallocator</a> f);
int <a href="#xmlHashUpdateEntry3">xmlHashUpdateEntry3</a> (<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name2, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name3, <br> void * userdata, <br> <a href="libxml2-hash.html#xmlHashDeallocator">xmlHashDeallocator</a> f);
</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="XML_CAST_FPTR">Macro </a>XML_CAST_FPTR</h3>
<pre class="programlisting">#define <a href="#XML_CAST_FPTR">XML_CAST_FPTR</a>(fptr);
</pre>
<p>Macro to do a casting from an object pointer to a function pointer without encountering a warning from gcc #define XML_CAST_FPTR(fptr) (*(void **)(&fptr)) This macro violated ISO C aliasing rules (gcc4 on s390 broke) so it is disabled now</p>
<div class="variablelist"><table border="0">
<col align="left">
<tbody><tr>
<td><span class="term"><i><tt>fptr</tt></i>:</span></td>
<td>pointer to a function</td>
</tr></tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<h3>
<a name="xmlHashTable">Structure </a>xmlHashTable</h3>
<pre class="programlisting">struct _xmlHashTable {
The content of this structure is not made public by the API.
} xmlHashTable;
</pre>
<p></p>
</div>
<hr>
<div class="refsect2" lang="en">
<h3>
<a name="xmlHashTablePtr">Typedef </a>xmlHashTablePtr</h3>
<pre class="programlisting"><a href="libxml2-hash.html#xmlHashTable">xmlHashTable</a> * xmlHashTablePtr;
</pre>
<p></p>
</div>
<hr>
<div class="refsect2" lang="en">
<h3>
<a name="xmlHashCopier"></a>Function type xmlHashCopier</h3>
<pre class="programlisting">void * xmlHashCopier (void * payload, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name)<br>
</pre>
<p>Callback to copy data from a hash.</p>
<div class="variablelist"><table border="0">
<col align="left">
<tbody>
<tr>
<td><span class="term"><i><tt>payload</tt></i>:</span></td>
<td>the data in the hash</td>
</tr>
<tr>
<td><span class="term"><i><tt>name</tt></i>:</span></td>
<td>the name associated</td>
</tr>
<tr>
<td><span class="term"><i><tt>Returns</tt></i>:</span></td>
<td>a copy of the data or NULL in case of error.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<h3>
<a name="xmlHashDeallocator"></a>Function type xmlHashDeallocator</h3>
<pre class="programlisting">void xmlHashDeallocator (void * payload, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name)<br>
</pre>
<p>Callback to free data from a hash.</p>
<div class="variablelist"><table border="0">
<col align="left">
<tbody>
<tr>
<td><span class="term"><i><tt>payload</tt></i>:</span></td>
<td>the data in the hash</td>
</tr>
<tr>
<td><span class="term"><i><tt>name</tt></i>:</span></td>
<td>the name associated</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<h3>
<a name="xmlHashScanner"></a>Function type xmlHashScanner</h3>
<pre class="programlisting">void xmlHashScanner (void * payload, <br> void * data, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name)<br>
</pre>
<p>Callback when scanning data in a hash with the simple scanner.</p>
<div class="variablelist"><table border="0">
<col align="left">
<tbody>
<tr>
<td><span class="term"><i><tt>payload</tt></i>:</span></td>
<td>the data in the hash</td>
</tr>
<tr>
<td><span class="term"><i><tt>data</tt></i>:</span></td>
<td>extra scanner data</td>
</tr>
<tr>
<td><span class="term"><i><tt>name</tt></i>:</span></td>
<td>the name associated</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<h3>
<a name="xmlHashScannerFull"></a>Function type xmlHashScannerFull</h3>
<pre class="programlisting">void xmlHashScannerFull (void * payload, <br> void * data, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name2, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name3)<br>
</pre>
<p>Callback when scanning data in a hash with the full scanner.</p>
<div class="variablelist"><table border="0">
<col align="left">
<tbody>
<tr>
<td><span class="term"><i><tt>payload</tt></i>:</span></td>
<td>the data in the hash</td>
</tr>
<tr>
<td><span class="term"><i><tt>data</tt></i>:</span></td>
<td>extra scanner data</td>
</tr>
<tr>
<td><span class="term"><i><tt>name</tt></i>:</span></td>
<td>the name associated</td>
</tr>
<tr>
<td><span class="term"><i><tt>name2</tt></i>:</span></td>
<td>the second name associated</td>
</tr>
<tr>
<td><span class="term"><i><tt>name3</tt></i>:</span></td>
<td>the third name associated</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<h3>
<a name="xmlHashAddEntry"></a>xmlHashAddEntry ()</h3>
<pre class="programlisting">int xmlHashAddEntry (<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br> void * userdata)<br>
</pre>
<p>Add the @userdata to the hash @table. This can later be retrieved by using the @name. Duplicate names generate errors.</p>
<div class="variablelist"><table border="0">
<col align="left">
<tbody>
<tr>
<td><span class="term"><i><tt>table</tt></i>:</span></td>
<td>the hash table</td>
</tr>
<tr>
<td><span class="term"><i><tt>name</tt></i>:</span></td>
<td>the name of the userdata</td>
</tr>
<tr>
<td><span class="term"><i><tt>userdata</tt></i>:</span></td>
<td>a pointer to the userdata</td>
</tr>
<tr>
<td><span class="term"><i><tt>Returns</tt></i>:</span></td>
<td>0 the addition succeeded and -1 in case of error.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<h3>
<a name="xmlHashAddEntry2"></a>xmlHashAddEntry2 ()</h3>
<pre class="programlisting">int xmlHashAddEntry2 (<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name2, <br> void * userdata)<br>
</pre>
<p>Add the @userdata to the hash @table. This can later be retrieved by using the (@name, @name2) tuple. Duplicate tuples generate errors.</p>
<div class="variablelist"><table border="0">
<col align="left">
<tbody>
<tr>
<td><span class="term"><i><tt>table</tt></i>:</span></td>
<td>the hash table</td>
</tr>
<tr>
<td><span class="term"><i><tt>name</tt></i>:</span></td>
<td>the name of the userdata</td>
</tr>
<tr>
<td><span class="term"><i><tt>name2</tt></i>:</span></td>
<td>a second name of the userdata</td>
</tr>
<tr>
<td><span class="term"><i><tt>userdata</tt></i>:</span></td>
<td>a pointer to the userdata</td>
</tr>
<tr>
<td><span class="term"><i><tt>Returns</tt></i>:</span></td>
<td>0 the addition succeeded and -1 in case of error.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<h3>
<a name="xmlHashAddEntry3"></a>xmlHashAddEntry3 ()</h3>
<pre class="programlisting">int xmlHashAddEntry3 (<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name2, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name3, <br> void * userdata)<br>
</pre>
<p>Add the @userdata to the hash @table. This can later be retrieved by using the tuple (@name, @name2, @name3). Duplicate entries generate errors.</p>
<div class="variablelist"><table border="0">
<col align="left">
<tbody>
<tr>
<td><span class="term"><i><tt>table</tt></i>:</span></td>
<td>the hash table</td>
</tr>
<tr>
<td><span class="term"><i><tt>name</tt></i>:</span></td>
<td>the name of the userdata</td>
</tr>
<tr>
<td><span class="term"><i><tt>name2</tt></i>:</span></td>
<td>a second name of the userdata</td>
</tr>
<tr>
<td><span class="term"><i><tt>name3</tt></i>:</span></td>
<td>a third name of the userdata</td>
</tr>
<tr>
<td><span class="term"><i><tt>userdata</tt></i>:</span></td>
<td>a pointer to the userdata</td>
</tr>
<tr>
<td><span class="term"><i><tt>Returns</tt></i>:</span></td>
<td>0 the addition succeeded and -1 in case of error.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<h3>
<a name="xmlHashCopy"></a>xmlHashCopy ()</h3>
<pre class="programlisting"><a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> xmlHashCopy (<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br> <a href="libxml2-hash.html#xmlHashCopier">xmlHashCopier</a> f)<br>
</pre>
<p>Scan the hash @table and applied @f to each value.</p>
<div class="variablelist"><table border="0">
<col align="left">
<tbody>
<tr>
<td><span class="term"><i><tt>table</tt></i>:</span></td>
<td>the hash table</td>
</tr>
<tr>
<td><span class="term"><i><tt>f</tt></i>:</span></td>
<td>the copier function for items in the hash</td>
</tr>
<tr>
<td><span class="term"><i><tt>Returns</tt></i>:</span></td>
<td>the new table or NULL in case of error.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<h3>
<a name="xmlHashCreate"></a>xmlHashCreate ()</h3>
<pre class="programlisting"><a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> xmlHashCreate (int size)<br>
</pre>
<p>Create a new xmlHashTablePtr.</p>
<div class="variablelist"><table border="0">
<col align="left">
<tbody>
<tr>
<td><span class="term"><i><tt>size</tt></i>:</span></td>
<td>the size of the hash table</td>
</tr>
<tr>
<td><span class="term"><i><tt>Returns</tt></i>:</span></td>
<td>the newly created object, or NULL if an error occurred.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<h3>
<a name="xmlHashCreateDict"></a>xmlHashCreateDict ()</h3>
<pre class="programlisting"><a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> xmlHashCreateDict (int size, <br> <a href="libxml2-dict.html#xmlDictPtr">xmlDictPtr</a> dict)<br>
</pre>
<p>Create a new <a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> which will use @dict as the internal dictionary</p>
<div class="variablelist"><table border="0">
<col align="left">
<tbody>
<tr>
<td><span class="term"><i><tt>size</tt></i>:</span></td>
<td>the size of the hash table</td>
</tr>
<tr>
<td><span class="term"><i><tt>dict</tt></i>:</span></td>
<td>a dictionary to use for the hash</td>
</tr>
<tr>
<td><span class="term"><i><tt>Returns</tt></i>:</span></td>
<td>the newly created object, or NULL if an error occurred.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<h3>
<a name="xmlHashDefaultDeallocator"></a>xmlHashDefaultDeallocator ()</h3>
<pre class="programlisting">void xmlHashDefaultDeallocator (void * entry, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name)<br>
</pre>
<p>Free a hash table entry with xmlFree.</p>
<div class="variablelist"><table border="0">
<col align="left">
<tbody>
<tr>
<td><span class="term"><i><tt>entry</tt></i>:</span></td>
<td>the hash table entry</td>
</tr>
<tr>
<td><span class="term"><i><tt>name</tt></i>:</span></td>
<td>the entry's name</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<h3>
<a name="xmlHashFree"></a>xmlHashFree ()</h3>
<pre class="programlisting">void xmlHashFree (<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br> <a href="libxml2-hash.html#xmlHashDeallocator">xmlHashDeallocator</a> f)<br>
</pre>
<p>Free the hash @table and its contents. The userdata is deallocated with @f if provided.</p>
<div class="variablelist"><table border="0">
<col align="left">
<tbody>
<tr>
<td><span class="term"><i><tt>table</tt></i>:</span></td>
<td>the hash table</td>
</tr>
<tr>
<td><span class="term"><i><tt>f</tt></i>:</span></td>
<td>the deallocator function for items in the hash</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<h3>
<a name="xmlHashLookup"></a>xmlHashLookup ()</h3>
<pre class="programlisting">void * xmlHashLookup (<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name)<br>
</pre>
<p>Find the userdata specified by the @name.</p>
<div class="variablelist"><table border="0">
<col align="left">
<tbody>
<tr>
<td><span class="term"><i><tt>table</tt></i>:</span></td>
<td>the hash table</td>
</tr>
<tr>
<td><span class="term"><i><tt>name</tt></i>:</span></td>
<td>the name of the userdata</td>
</tr>
<tr>
<td><span class="term"><i><tt>Returns</tt></i>:</span></td>
<td>the pointer to the userdata</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<h3>
<a name="xmlHashLookup2"></a>xmlHashLookup2 ()</h3>
<pre class="programlisting">void * xmlHashLookup2 (<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name2)<br>
</pre>
<p>Find the userdata specified by the (@name, @name2) tuple.</p>
<div class="variablelist"><table border="0">
<col align="left">
<tbody>
<tr>
<td><span class="term"><i><tt>table</tt></i>:</span></td>
<td>the hash table</td>
</tr>
<tr>
<td><span class="term"><i><tt>name</tt></i>:</span></td>
<td>the name of the userdata</td>
</tr>
<tr>
<td><span class="term"><i><tt>name2</tt></i>:</span></td>
<td>a second name of the userdata</td>
</tr>
<tr>
<td><span class="term"><i><tt>Returns</tt></i>:</span></td>
<td>the pointer to the userdata</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<h3>
<a name="xmlHashLookup3"></a>xmlHashLookup3 ()</h3>
<pre class="programlisting">void * xmlHashLookup3 (<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name2, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name3)<br>
</pre>
<p>Find the userdata specified by the (@name, @name2, @name3) tuple.</p>
<div class="variablelist"><table border="0">
<col align="left">
<tbody>
<tr>
<td><span class="term"><i><tt>table</tt></i>:</span></td>
<td>the hash table</td>
</tr>
<tr>
<td><span class="term"><i><tt>name</tt></i>:</span></td>
<td>the name of the userdata</td>
</tr>
<tr>
<td><span class="term"><i><tt>name2</tt></i>:</span></td>
<td>a second name of the userdata</td>
</tr>
<tr>
<td><span class="term"><i><tt>name3</tt></i>:</span></td>
<td>a third name of the userdata</td>
</tr>
<tr>
<td><span class="term"><i><tt>Returns</tt></i>:</span></td>
<td>the a pointer to the userdata</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<h3>
<a name="xmlHashQLookup"></a>xmlHashQLookup ()</h3>
<pre class="programlisting">void * xmlHashQLookup (<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * prefix, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name)<br>
</pre>
<p>Find the userdata specified by the QName @prefix:@name/@name.</p>
<div class="variablelist"><table border="0">
<col align="left">
<tbody>
<tr>
<td><span class="term"><i><tt>table</tt></i>:</span></td>
<td>the hash table</td>
</tr>
<tr>
<td><span class="term"><i><tt>prefix</tt></i>:</span></td>
<td>the prefix of the userdata</td>
</tr>
<tr>
<td><span class="term"><i><tt>name</tt></i>:</span></td>
<td>the name of the userdata</td>
</tr>
<tr>
<td><span class="term"><i><tt>Returns</tt></i>:</span></td>
<td>the pointer to the userdata</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<h3>
<a name="xmlHashQLookup2"></a>xmlHashQLookup2 ()</h3>
<pre class="programlisting">void * xmlHashQLookup2 (<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * prefix, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * prefix2, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name2)<br>
</pre>
<p>Find the userdata specified by the QNames tuple</p>
<div class="variablelist"><table border="0">
<col align="left">
<tbody>
<tr>
<td><span class="term"><i><tt>table</tt></i>:</span></td>
<td>the hash table</td>
</tr>
<tr>
<td><span class="term"><i><tt>prefix</tt></i>:</span></td>
<td>the prefix of the userdata</td>
</tr>
<tr>
<td><span class="term"><i><tt>name</tt></i>:</span></td>
<td>the name of the userdata</td>
</tr>
<tr>
<td><span class="term"><i><tt>prefix2</tt></i>:</span></td>
<td>the second prefix of the userdata</td>
</tr>
<tr>
<td><span class="term"><i><tt>name2</tt></i>:</span></td>
<td>a second name of the userdata</td>
</tr>
<tr>
<td><span class="term"><i><tt>Returns</tt></i>:</span></td>
<td>the pointer to the userdata</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<h3>
<a name="xmlHashQLookup3"></a>xmlHashQLookup3 ()</h3>
<pre class="programlisting">void * xmlHashQLookup3 (<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * prefix, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * prefix2, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name2, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * prefix3, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name3)<br>
</pre>
<p>Find the userdata specified by the (@name, @name2, @name3) tuple.</p>
<div class="variablelist"><table border="0">
<col align="left">
<tbody>
<tr>
<td><span class="term"><i><tt>table</tt></i>:</span></td>
<td>the hash table</td>
</tr>
<tr>
<td><span class="term"><i><tt>prefix</tt></i>:</span></td>
<td>the prefix of the userdata</td>
</tr>
<tr>
<td><span class="term"><i><tt>name</tt></i>:</span></td>
<td>the name of the userdata</td>
</tr>
<tr>
<td><span class="term"><i><tt>prefix2</tt></i>:</span></td>
<td>the second prefix of the userdata</td>
</tr>
<tr>
<td><span class="term"><i><tt>name2</tt></i>:</span></td>
<td>a second name of the userdata</td>
</tr>
<tr>
<td><span class="term"><i><tt>prefix3</tt></i>:</span></td>
<td>the third prefix of the userdata</td>
</tr>
<tr>
<td><span class="term"><i><tt>name3</tt></i>:</span></td>
<td>a third name of the userdata</td>
</tr>
<tr>
<td><span class="term"><i><tt>Returns</tt></i>:</span></td>
<td>the a pointer to the userdata</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<h3>
<a name="xmlHashRemoveEntry"></a>xmlHashRemoveEntry ()</h3>
<pre class="programlisting">int xmlHashRemoveEntry (<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br> <a href="libxml2-hash.html#xmlHashDeallocator">xmlHashDeallocator</a> f)<br>
</pre>
<p>Find the userdata specified by the @name and remove it from the hash @table. Existing userdata for this tuple will be removed and freed with @f.</p>
<div class="variablelist"><table border="0">
<col align="left">
<tbody>
<tr>
<td><span class="term"><i><tt>table</tt></i>:</span></td>
<td>the hash table</td>
</tr>
<tr>
<td><span class="term"><i><tt>name</tt></i>:</span></td>
<td>the name of the userdata</td>
</tr>
<tr>
<td><span class="term"><i><tt>f</tt></i>:</span></td>
<td>the deallocator function for removed item (if any)</td>
</tr>
<tr>
<td><span class="term"><i><tt>Returns</tt></i>:</span></td>
<td>0 if the removal succeeded and -1 in case of error or not found.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<h3>
<a name="xmlHashRemoveEntry2"></a>xmlHashRemoveEntry2 ()</h3>
<pre class="programlisting">int xmlHashRemoveEntry2 (<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name2, <br> <a href="libxml2-hash.html#xmlHashDeallocator">xmlHashDeallocator</a> f)<br>
</pre>
<p>Find the userdata specified by the (@name, @name2) tuple and remove it from the hash @table. Existing userdata for this tuple will be removed and freed with @f.</p>
<div class="variablelist"><table border="0">
<col align="left">
<tbody>
<tr>
<td><span class="term"><i><tt>table</tt></i>:</span></td>
<td>the hash table</td>
</tr>
<tr>
<td><span class="term"><i><tt>name</tt></i>:</span></td>
<td>the name of the userdata</td>
</tr>
<tr>
<td><span class="term"><i><tt>name2</tt></i>:</span></td>
<td>a second name of the userdata</td>
</tr>
<tr>
<td><span class="term"><i><tt>f</tt></i>:</span></td>
<td>the deallocator function for removed item (if any)</td>
</tr>
<tr>
<td><span class="term"><i><tt>Returns</tt></i>:</span></td>
<td>0 if the removal succeeded and -1 in case of error or not found.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<h3>
<a name="xmlHashRemoveEntry3"></a>xmlHashRemoveEntry3 ()</h3>
<pre class="programlisting">int xmlHashRemoveEntry3 (<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name2, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name3, <br> <a href="libxml2-hash.html#xmlHashDeallocator">xmlHashDeallocator</a> f)<br>
</pre>
<p>Find the userdata specified by the (@name, @name2, @name3) tuple and remove it from the hash @table. Existing userdata for this tuple will be removed and freed with @f.</p>
<div class="variablelist"><table border="0">
<col align="left">
<tbody>
<tr>
<td><span class="term"><i><tt>table</tt></i>:</span></td>
<td>the hash table</td>
</tr>
<tr>
<td><span class="term"><i><tt>name</tt></i>:</span></td>
<td>the name of the userdata</td>
</tr>
<tr>
<td><span class="term"><i><tt>name2</tt></i>:</span></td>
<td>a second name of the userdata</td>
</tr>
<tr>
<td><span class="term"><i><tt>name3</tt></i>:</span></td>
<td>a third name of the userdata</td>
</tr>
<tr>
<td><span class="term"><i><tt>f</tt></i>:</span></td>
<td>the deallocator function for removed item (if any)</td>
</tr>
<tr>
<td><span class="term"><i><tt>Returns</tt></i>:</span></td>
<td>0 if the removal succeeded and -1 in case of error or not found.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<h3>
<a name="xmlHashScan"></a>xmlHashScan ()</h3>
<pre class="programlisting">void xmlHashScan (<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br> <a href="libxml2-hash.html#xmlHashScanner">xmlHashScanner</a> f, <br> void * data)<br>
</pre>
<p>Scan the hash @table and applied @f to each value.</p>
<div class="variablelist"><table border="0">
<col align="left">
<tbody>
<tr>
<td><span class="term"><i><tt>table</tt></i>:</span></td>
<td>the hash table</td>
</tr>
<tr>
<td><span class="term"><i><tt>f</tt></i>:</span></td>
<td>the scanner function for items in the hash</td>
</tr>
<tr>
<td><span class="term"><i><tt>data</tt></i>:</span></td>
<td>extra data passed to f</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<h3>
<a name="xmlHashScan3"></a>xmlHashScan3 ()</h3>
<pre class="programlisting">void xmlHashScan3 (<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name2, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name3, <br> <a href="libxml2-hash.html#xmlHashScanner">xmlHashScanner</a> f, <br> void * data)<br>
</pre>
<p>Scan the hash @table and applied @f to each value matching (@name, @name2, @name3) tuple. If one of the names is null, the comparison is considered to match.</p>
<div class="variablelist"><table border="0">
<col align="left">
<tbody>
<tr>
<td><span class="term"><i><tt>table</tt></i>:</span></td>
<td>the hash table</td>
</tr>
<tr>
<td><span class="term"><i><tt>name</tt></i>:</span></td>
<td>the name of the userdata or NULL</td>
</tr>
<tr>
<td><span class="term"><i><tt>name2</tt></i>:</span></td>
<td>a second name of the userdata or NULL</td>
</tr>
<tr>
<td><span class="term"><i><tt>name3</tt></i>:</span></td>
<td>a third name of the userdata or NULL</td>
</tr>
<tr>
<td><span class="term"><i><tt>f</tt></i>:</span></td>
<td>the scanner function for items in the hash</td>
</tr>
<tr>
<td><span class="term"><i><tt>data</tt></i>:</span></td>
<td>extra data passed to f</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<h3>
<a name="xmlHashScanFull"></a>xmlHashScanFull ()</h3>
<pre class="programlisting">void xmlHashScanFull (<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br> <a href="libxml2-hash.html#xmlHashScannerFull">xmlHashScannerFull</a> f, <br> void * data)<br>
</pre>
<p>Scan the hash @table and applied @f to each value.</p>
<div class="variablelist"><table border="0">
<col align="left">
<tbody>
<tr>
<td><span class="term"><i><tt>table</tt></i>:</span></td>
<td>the hash table</td>
</tr>
<tr>
<td><span class="term"><i><tt>f</tt></i>:</span></td>
<td>the scanner function for items in the hash</td>
</tr>
<tr>
<td><span class="term"><i><tt>data</tt></i>:</span></td>
<td>extra data passed to f</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<h3>
<a name="xmlHashScanFull3"></a>xmlHashScanFull3 ()</h3>
<pre class="programlisting">void xmlHashScanFull3 (<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name2, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name3, <br> <a href="libxml2-hash.html#xmlHashScannerFull">xmlHashScannerFull</a> f, <br> void * data)<br>
</pre>
<p>Scan the hash @table and applied @f to each value matching (@name, @name2, @name3) tuple. If one of the names is null, the comparison is considered to match.</p>
<div class="variablelist"><table border="0">
<col align="left">
<tbody>
<tr>
<td><span class="term"><i><tt>table</tt></i>:</span></td>
<td>the hash table</td>
</tr>
<tr>
<td><span class="term"><i><tt>name</tt></i>:</span></td>
<td>the name of the userdata or NULL</td>
</tr>
<tr>
<td><span class="term"><i><tt>name2</tt></i>:</span></td>
<td>a second name of the userdata or NULL</td>
</tr>
<tr>
<td><span class="term"><i><tt>name3</tt></i>:</span></td>
<td>a third name of the userdata or NULL</td>
</tr>
<tr>
<td><span class="term"><i><tt>f</tt></i>:</span></td>
<td>the scanner function for items in the hash</td>
</tr>
<tr>
<td><span class="term"><i><tt>data</tt></i>:</span></td>
<td>extra data passed to f</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<h3>
<a name="xmlHashSize"></a>xmlHashSize ()</h3>
<pre class="programlisting">int xmlHashSize (<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table)<br>
</pre>
<p>Query the number of elements installed in the hash @table.</p>
<div class="variablelist"><table border="0">
<col align="left">
<tbody>
<tr>
<td><span class="term"><i><tt>table</tt></i>:</span></td>
<td>the hash table</td>
</tr>
<tr>
<td><span class="term"><i><tt>Returns</tt></i>:</span></td>
<td>the number of elements in the hash table or -1 in case of error</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<h3>
<a name="xmlHashUpdateEntry"></a>xmlHashUpdateEntry ()</h3>
<pre class="programlisting">int xmlHashUpdateEntry (<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br> void * userdata, <br> <a href="libxml2-hash.html#xmlHashDeallocator">xmlHashDeallocator</a> f)<br>
</pre>
<p>Add the @userdata to the hash @table. This can later be retrieved by using the @name. Existing entry for this @name will be removed and freed with @f if found.</p>
<div class="variablelist"><table border="0">
<col align="left">
<tbody>
<tr>
<td><span class="term"><i><tt>table</tt></i>:</span></td>
<td>the hash table</td>
</tr>
<tr>
<td><span class="term"><i><tt>name</tt></i>:</span></td>
<td>the name of the userdata</td>
</tr>
<tr>
<td><span class="term"><i><tt>userdata</tt></i>:</span></td>
<td>a pointer to the userdata</td>
</tr>
<tr>
<td><span class="term"><i><tt>f</tt></i>:</span></td>
<td>the deallocator function for replaced item (if any)</td>
</tr>
<tr>
<td><span class="term"><i><tt>Returns</tt></i>:</span></td>
<td>0 the addition succeeded and -1 in case of error.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<h3>
<a name="xmlHashUpdateEntry2"></a>xmlHashUpdateEntry2 ()</h3>
<pre class="programlisting">int xmlHashUpdateEntry2 (<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name2, <br> void * userdata, <br> <a href="libxml2-hash.html#xmlHashDeallocator">xmlHashDeallocator</a> f)<br>
</pre>
<p>Add the @userdata to the hash @table. This can later be retrieved by using the (@name, @name2) tuple. Existing entry for this tuple will be removed and freed with @f if found.</p>
<div class="variablelist"><table border="0">
<col align="left">
<tbody>
<tr>
<td><span class="term"><i><tt>table</tt></i>:</span></td>
<td>the hash table</td>
</tr>
<tr>
<td><span class="term"><i><tt>name</tt></i>:</span></td>
<td>the name of the userdata</td>
</tr>
<tr>
<td><span class="term"><i><tt>name2</tt></i>:</span></td>
<td>a second name of the userdata</td>
</tr>
<tr>
<td><span class="term"><i><tt>userdata</tt></i>:</span></td>
<td>a pointer to the userdata</td>
</tr>
<tr>
<td><span class="term"><i><tt>f</tt></i>:</span></td>
<td>the deallocator function for replaced item (if any)</td>
</tr>
<tr>
<td><span class="term"><i><tt>Returns</tt></i>:</span></td>
<td>0 the addition succeeded and -1 in case of error.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<h3>
<a name="xmlHashUpdateEntry3"></a>xmlHashUpdateEntry3 ()</h3>
<pre class="programlisting">int xmlHashUpdateEntry3 (<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name2, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name3, <br> void * userdata, <br> <a href="libxml2-hash.html#xmlHashDeallocator">xmlHashDeallocator</a> f)<br>
</pre>
<p>Add the @userdata to the hash @table. This can later be retrieved by using the tuple (@name, @name2, @name3). Existing entry for this tuple will be removed and freed with @f if found.</p>
<div class="variablelist"><table border="0">
<col align="left">
<tbody>
<tr>
<td><span class="term"><i><tt>table</tt></i>:</span></td>
<td>the hash table</td>
</tr>
<tr>
<td><span class="term"><i><tt>name</tt></i>:</span></td>
<td>the name of the userdata</td>
</tr>
<tr>
<td><span class="term"><i><tt>name2</tt></i>:</span></td>
<td>a second name of the userdata</td>
</tr>
<tr>
<td><span class="term"><i><tt>name3</tt></i>:</span></td>
<td>a third name of the userdata</td>
</tr>
<tr>
<td><span class="term"><i><tt>userdata</tt></i>:</span></td>
<td>a pointer to the userdata</td>
</tr>
<tr>
<td><span class="term"><i><tt>f</tt></i>:</span></td>
<td>the deallocator function for replaced item (if any)</td>
</tr>
<tr>
<td><span class="term"><i><tt>Returns</tt></i>:</span></td>
<td>0 the addition succeeded and -1 in case of error.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
</div>
</div>
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