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<li class="navelem"><a class="el" href="dir_d44c64559bbebec7f509842c48db8b23.html">include</a></li><li class="navelem"><a class="el" href="dir_99176029e6245da7be482686d42cbcde.html">qb</a></li>  </ul>
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<a href="#define-members">Macros</a> &#124;
<a href="#typedef-members">Typedefs</a> &#124;
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  <div class="headertitle">
<div class="title">qbmap.h File Reference</div>  </div>
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<p>This provides a map interface to a Patricia trie, hashtable or skiplist.  
<a href="#details">More...</a></p>
<div class="textblock"><code>#include &lt;stdint.h&gt;</code><br />
<code>#include &lt;unistd.h&gt;</code><br />
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Include dependency graph for qbmap.h:</div>
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<div class="center"><img src="qbmap_8h__incl.png" border="0" usemap="#qbmap_8h" alt=""/></div>
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Macros</h2></td></tr>
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<tr class="memitem:af36f6cf5a7545610cacd530db6c02cf7"><td class="memItemLeft" align="right" valign="top">typedef struct qb_map&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="qbmap_8h.html#af36f6cf5a7545610cacd530db6c02cf7">qb_map_t</a></td></tr>
<tr class="memdesc:af36f6cf5a7545610cacd530db6c02cf7"><td class="mdescLeft">&#160;</td><td class="mdescRight">This is an opaque data type representing an instance of a map.  <a href="#af36f6cf5a7545610cacd530db6c02cf7">More...</a><br /></td></tr>
<tr class="separator:af36f6cf5a7545610cacd530db6c02cf7"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a6312b26a9852b03023365fce76b04947"><td class="memItemLeft" align="right" valign="top">typedef struct qb_map_iter&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="qbmap_8h.html#a6312b26a9852b03023365fce76b04947">qb_map_iter_t</a></td></tr>
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<tr class="separator:a6312b26a9852b03023365fce76b04947"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ab9016cec398a35ec2f28929e40f1aeec"><td class="memItemLeft" align="right" valign="top">typedef void(*&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="qbmap_8h.html#ab9016cec398a35ec2f28929e40f1aeec">qb_map_notify_fn</a>) (uint32_t event, char *key, void *old_value, void *value, void *user_data)</td></tr>
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Functions</h2></td></tr>
<tr class="memitem:af5cb42e29911ed84f0c47140cd4bd65e"><td class="memItemLeft" align="right" valign="top"><a class="el" href="qbmap_8h.html#af36f6cf5a7545610cacd530db6c02cf7">qb_map_t</a> *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="qbmap_8h.html#af5cb42e29911ed84f0c47140cd4bd65e">qb_hashtable_create</a> (size_t max_size)</td></tr>
<tr class="memdesc:af5cb42e29911ed84f0c47140cd4bd65e"><td class="mdescLeft">&#160;</td><td class="mdescRight">Create an unsorted map based on a hashtable.  <a href="#af5cb42e29911ed84f0c47140cd4bd65e">More...</a><br /></td></tr>
<tr class="separator:af5cb42e29911ed84f0c47140cd4bd65e"><td class="memSeparator" colspan="2">&#160;</td></tr>
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<tr class="memdesc:a2ea96c043a4a1412eeb9269bf4714241"><td class="mdescLeft">&#160;</td><td class="mdescRight">Create a sorted map using a skiplist.  <a href="#a2ea96c043a4a1412eeb9269bf4714241">More...</a><br /></td></tr>
<tr class="separator:a2ea96c043a4a1412eeb9269bf4714241"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a972d5d5f8d25e9fb6e7fc4c11bd57f1b"><td class="memItemLeft" align="right" valign="top"><a class="el" href="qbmap_8h.html#af36f6cf5a7545610cacd530db6c02cf7">qb_map_t</a> *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="qbmap_8h.html#a972d5d5f8d25e9fb6e7fc4c11bd57f1b">qb_trie_create</a> (void)</td></tr>
<tr class="memdesc:a972d5d5f8d25e9fb6e7fc4c11bd57f1b"><td class="mdescLeft">&#160;</td><td class="mdescRight">Create a sorted map using a Patricia trie or "Radix tree".  <a href="#a972d5d5f8d25e9fb6e7fc4c11bd57f1b">More...</a><br /></td></tr>
<tr class="separator:a972d5d5f8d25e9fb6e7fc4c11bd57f1b"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a13a119de1ba6166970b3dd52399761ff"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="qbmap_8h.html#a13a119de1ba6166970b3dd52399761ff">qb_trie_dump</a> (<a class="el" href="qbmap_8h.html#af36f6cf5a7545610cacd530db6c02cf7">qb_map_t</a> *m)</td></tr>
<tr class="memdesc:a13a119de1ba6166970b3dd52399761ff"><td class="mdescLeft">&#160;</td><td class="mdescRight">print out the nodes in the trie  <a href="#a13a119de1ba6166970b3dd52399761ff">More...</a><br /></td></tr>
<tr class="separator:a13a119de1ba6166970b3dd52399761ff"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:af609266bc70e3461d1a8fb99a8756bb0"><td class="memItemLeft" align="right" valign="top">int32_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="qbmap_8h.html#af609266bc70e3461d1a8fb99a8756bb0">qb_map_notify_add</a> (<a class="el" href="qbmap_8h.html#af36f6cf5a7545610cacd530db6c02cf7">qb_map_t</a> *m, const char *key, <a class="el" href="qbmap_8h.html#ab9016cec398a35ec2f28929e40f1aeec">qb_map_notify_fn</a> fn, int32_t events, void *user_data)</td></tr>
<tr class="memdesc:af609266bc70e3461d1a8fb99a8756bb0"><td class="mdescLeft">&#160;</td><td class="mdescRight">Add a notifier to the map.  <a href="#af609266bc70e3461d1a8fb99a8756bb0">More...</a><br /></td></tr>
<tr class="separator:af609266bc70e3461d1a8fb99a8756bb0"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a2697af7526e1994ba3b9c1b46bd40e98"><td class="memItemLeft" align="right" valign="top">int32_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="qbmap_8h.html#a2697af7526e1994ba3b9c1b46bd40e98">qb_map_notify_del</a> (<a class="el" href="qbmap_8h.html#af36f6cf5a7545610cacd530db6c02cf7">qb_map_t</a> *m, const char *key, <a class="el" href="qbmap_8h.html#ab9016cec398a35ec2f28929e40f1aeec">qb_map_notify_fn</a> fn, int32_t events)</td></tr>
<tr class="memdesc:a2697af7526e1994ba3b9c1b46bd40e98"><td class="mdescLeft">&#160;</td><td class="mdescRight">Delete a notifier from the map.  <a href="#a2697af7526e1994ba3b9c1b46bd40e98">More...</a><br /></td></tr>
<tr class="separator:a2697af7526e1994ba3b9c1b46bd40e98"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:abca55f8605f5db5180ab64b9e3d2c5cf"><td class="memItemLeft" align="right" valign="top">int32_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="qbmap_8h.html#abca55f8605f5db5180ab64b9e3d2c5cf">qb_map_notify_del_2</a> (<a class="el" href="qbmap_8h.html#af36f6cf5a7545610cacd530db6c02cf7">qb_map_t</a> *m, const char *key, <a class="el" href="qbmap_8h.html#ab9016cec398a35ec2f28929e40f1aeec">qb_map_notify_fn</a> fn, int32_t events, void *user_data)</td></tr>
<tr class="memdesc:abca55f8605f5db5180ab64b9e3d2c5cf"><td class="mdescLeft">&#160;</td><td class="mdescRight">Delete a notifier from the map (including the userdata).  <a href="#abca55f8605f5db5180ab64b9e3d2c5cf">More...</a><br /></td></tr>
<tr class="separator:abca55f8605f5db5180ab64b9e3d2c5cf"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a453055122f662e46c218a2d38601bab0"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="qbmap_8h.html#a453055122f662e46c218a2d38601bab0">qb_map_put</a> (<a class="el" href="qbmap_8h.html#af36f6cf5a7545610cacd530db6c02cf7">qb_map_t</a> *map, const char *key, const void *value)</td></tr>
<tr class="memdesc:a453055122f662e46c218a2d38601bab0"><td class="mdescLeft">&#160;</td><td class="mdescRight">Inserts a new key and value into a qb_map_t.  <a href="#a453055122f662e46c218a2d38601bab0">More...</a><br /></td></tr>
<tr class="separator:a453055122f662e46c218a2d38601bab0"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a8ca1233b2409ab37d03a1f5ed5783a31"><td class="memItemLeft" align="right" valign="top">void *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="qbmap_8h.html#a8ca1233b2409ab37d03a1f5ed5783a31">qb_map_get</a> (<a class="el" href="qbmap_8h.html#af36f6cf5a7545610cacd530db6c02cf7">qb_map_t</a> *map, const char *key)</td></tr>
<tr class="memdesc:a8ca1233b2409ab37d03a1f5ed5783a31"><td class="mdescLeft">&#160;</td><td class="mdescRight">Gets the value corresponding to the given key.  <a href="#a8ca1233b2409ab37d03a1f5ed5783a31">More...</a><br /></td></tr>
<tr class="separator:a8ca1233b2409ab37d03a1f5ed5783a31"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a8c771ef3bbeb90faa9086c6c0fc1d774"><td class="memItemLeft" align="right" valign="top">int32_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="qbmap_8h.html#a8c771ef3bbeb90faa9086c6c0fc1d774">qb_map_rm</a> (<a class="el" href="qbmap_8h.html#af36f6cf5a7545610cacd530db6c02cf7">qb_map_t</a> *map, const char *key)</td></tr>
<tr class="memdesc:a8c771ef3bbeb90faa9086c6c0fc1d774"><td class="mdescLeft">&#160;</td><td class="mdescRight">Removes a key/value pair from a map.  <a href="#a8c771ef3bbeb90faa9086c6c0fc1d774">More...</a><br /></td></tr>
<tr class="separator:a8c771ef3bbeb90faa9086c6c0fc1d774"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ab862b6a8e1189b36d22daf9126784795"><td class="memItemLeft" align="right" valign="top">size_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="qbmap_8h.html#ab862b6a8e1189b36d22daf9126784795">qb_map_count_get</a> (<a class="el" href="qbmap_8h.html#af36f6cf5a7545610cacd530db6c02cf7">qb_map_t</a> *map)</td></tr>
<tr class="memdesc:ab862b6a8e1189b36d22daf9126784795"><td class="mdescLeft">&#160;</td><td class="mdescRight">Get the number of items in the map.  <a href="#ab862b6a8e1189b36d22daf9126784795">More...</a><br /></td></tr>
<tr class="separator:ab862b6a8e1189b36d22daf9126784795"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a3e52d55673b7ae2e113c8327a562f851"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="qbmap_8h.html#a3e52d55673b7ae2e113c8327a562f851">qb_map_foreach</a> (<a class="el" href="qbmap_8h.html#af36f6cf5a7545610cacd530db6c02cf7">qb_map_t</a> *map, <a class="el" href="qbmap_8h.html#a3202ce83928534cddc9adc62072fc6bb">qb_map_transverse_fn</a> func, void *user_data)</td></tr>
<tr class="memdesc:a3e52d55673b7ae2e113c8327a562f851"><td class="mdescLeft">&#160;</td><td class="mdescRight">Calls the given function for each of the key/value pairs in the map.  <a href="#a3e52d55673b7ae2e113c8327a562f851">More...</a><br /></td></tr>
<tr class="separator:a3e52d55673b7ae2e113c8327a562f851"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a72fe80e5569e5115f6e92e46d82a416d"><td class="memItemLeft" align="right" valign="top"><a class="el" href="qbmap_8h.html#a6312b26a9852b03023365fce76b04947">qb_map_iter_t</a> *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="qbmap_8h.html#a72fe80e5569e5115f6e92e46d82a416d">qb_map_iter_create</a> (<a class="el" href="qbmap_8h.html#af36f6cf5a7545610cacd530db6c02cf7">qb_map_t</a> *map)</td></tr>
<tr class="memdesc:a72fe80e5569e5115f6e92e46d82a416d"><td class="mdescLeft">&#160;</td><td class="mdescRight">Create an iterator.  <a href="#a72fe80e5569e5115f6e92e46d82a416d">More...</a><br /></td></tr>
<tr class="separator:a72fe80e5569e5115f6e92e46d82a416d"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a79b9cc643af7318ea147a770906e6576"><td class="memItemLeft" align="right" valign="top"><a class="el" href="qbmap_8h.html#a6312b26a9852b03023365fce76b04947">qb_map_iter_t</a> *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="qbmap_8h.html#a79b9cc643af7318ea147a770906e6576">qb_map_pref_iter_create</a> (<a class="el" href="qbmap_8h.html#af36f6cf5a7545610cacd530db6c02cf7">qb_map_t</a> *map, const char *prefix)</td></tr>
<tr class="memdesc:a79b9cc643af7318ea147a770906e6576"><td class="mdescLeft">&#160;</td><td class="mdescRight">Create a prefix iterator.  <a href="#a79b9cc643af7318ea147a770906e6576">More...</a><br /></td></tr>
<tr class="separator:a79b9cc643af7318ea147a770906e6576"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a8fc94968f29e187cf15d3a15e874b664"><td class="memItemLeft" align="right" valign="top">const char *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="qbmap_8h.html#a8fc94968f29e187cf15d3a15e874b664">qb_map_iter_next</a> (<a class="el" href="qbmap_8h.html#a6312b26a9852b03023365fce76b04947">qb_map_iter_t</a> *i, void **value)</td></tr>
<tr class="memdesc:a8fc94968f29e187cf15d3a15e874b664"><td class="mdescLeft">&#160;</td><td class="mdescRight">Get the next item.  <a href="#a8fc94968f29e187cf15d3a15e874b664">More...</a><br /></td></tr>
<tr class="separator:a8fc94968f29e187cf15d3a15e874b664"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ac42fdf91f567699ee6c5f8e803718908"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="qbmap_8h.html#ac42fdf91f567699ee6c5f8e803718908">qb_map_iter_free</a> (<a class="el" href="qbmap_8h.html#a6312b26a9852b03023365fce76b04947">qb_map_iter_t</a> *i)</td></tr>
<tr class="memdesc:ac42fdf91f567699ee6c5f8e803718908"><td class="mdescLeft">&#160;</td><td class="mdescRight">free the iterator  <a href="#ac42fdf91f567699ee6c5f8e803718908">More...</a><br /></td></tr>
<tr class="separator:ac42fdf91f567699ee6c5f8e803718908"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a81171d607d0464aeb11bcebf1227c065"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="qbmap_8h.html#a81171d607d0464aeb11bcebf1227c065">qb_map_destroy</a> (<a class="el" href="qbmap_8h.html#af36f6cf5a7545610cacd530db6c02cf7">qb_map_t</a> *map)</td></tr>
<tr class="memdesc:a81171d607d0464aeb11bcebf1227c065"><td class="mdescLeft">&#160;</td><td class="mdescRight">Destroy the map, removes all the items from the map.  <a href="#a81171d607d0464aeb11bcebf1227c065">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>This provides a map interface to a Patricia trie, hashtable or skiplist. </p>
<dl class="section user"><dt>Ordering</dt><dd>The hashtable is NOT ordered, but ptrie and skiplist are.</dd></dl>
<dl class="section user"><dt>Iterating</dt><dd>Below is a simple example of how to iterate over a map. <div class="fragment"><div class="line"><span class="keyword">const</span> <span class="keywordtype">char</span> *p;</div><div class="line"><span class="keywordtype">void</span> *data;</div><div class="line"><a class="code" href="qbmap_8h.html#a6312b26a9852b03023365fce76b04947">qb_map_iter_t</a> *it = <a class="code" href="qbmap_8h.html#a72fe80e5569e5115f6e92e46d82a416d">qb_map_iter_create</a>(m);</div><div class="line"><span class="keywordflow">for</span> (p = <a class="code" href="qbmap_8h.html#a8fc94968f29e187cf15d3a15e874b664">qb_map_iter_next</a>(it, &amp;data); p; p = <a class="code" href="qbmap_8h.html#a8fc94968f29e187cf15d3a15e874b664">qb_map_iter_next</a>(it, &amp;data)) {</div><div class="line">    printf(<span class="stringliteral">&quot;%s &gt; %s\n&quot;</span>, p, (<span class="keywordtype">char</span>*) data);</div><div class="line">}</div><div class="line"><a class="code" href="qbmap_8h.html#ac42fdf91f567699ee6c5f8e803718908">qb_map_iter_free</a>(it);</div></div><!-- fragment --></dd></dl>
<p>Deletion of items within the iterator is supported. But note do not free the item memory in the iterator. If you need to free the data items then register for a notifier and free the memory there. This is required as the items are reference counted. </p><div class="fragment"><div class="line"><a class="code" href="qbmap_8h.html#af609266bc70e3461d1a8fb99a8756bb0">qb_map_notify_add</a>(m, NULL, my_map_free_handler,</div><div class="line">             <a class="code" href="qbmap_8h.html#a09e0ad929e503bc677b7f9cd8603ca40">QB_MAP_NOTIFY_FREE</a>, NULL);</div></div><!-- fragment --><dl class="section user"><dt>Notifications</dt><dd>These allow you to get callbacks when values are inserted/removed or replaced. </dd></dl>
<dl class="section note"><dt>Note</dt><dd>hashtable only supports deletion and replacement notificatins. There is also a special global callback for freeing deleted and replaced values (QB_MAP_NOTIFY_FREE). </dd></dl>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="qbmap_8h.html#af609266bc70e3461d1a8fb99a8756bb0" title="Add a notifier to the map. ">qb_map_notify_add()</a> <a class="el" href="qbmap_8h.html#abca55f8605f5db5180ab64b9e3d2c5cf" title="Delete a notifier from the map (including the userdata). ">qb_map_notify_del_2()</a></dd></dl>
<dl class="section user"><dt>Prefix matching</dt><dd>The ptrie supports prefixes in the iterator:</dd></dl>
<div class="fragment"><div class="line">it = <a class="code" href="qbmap_8h.html#a79b9cc643af7318ea147a770906e6576">qb_map_pref_iter_create</a>(m, <span class="stringliteral">&quot;aa&quot;</span>);</div><div class="line"><span class="keywordflow">while</span> ((p = <a class="code" href="qbmap_8h.html#a8fc94968f29e187cf15d3a15e874b664">qb_map_iter_next</a>(it, &amp;data)) != NULL) {</div><div class="line">    printf(<span class="stringliteral">&quot;%s &gt; %s\n&quot;</span>, p, (<span class="keywordtype">char</span>*)data);</div><div class="line">}</div><div class="line"><a class="code" href="qbmap_8h.html#ac42fdf91f567699ee6c5f8e803718908">qb_map_iter_free</a>(it);</div></div><!-- fragment --><p>The ptrie also supports prefixes in notifications: (remember to pass QB_MAP_NOTIFY_RECURSIVE into the notify_add. </p><div class="fragment"><div class="line"><a class="code" href="qbmap_8h.html#af609266bc70e3461d1a8fb99a8756bb0">qb_map_notify_add</a>(m, <span class="stringliteral">&quot;root&quot;</span>, my_map_notification,</div><div class="line">            (<a class="code" href="qbmap_8h.html#a956325e2495485b0bf8b5806221a4e47">QB_MAP_NOTIFY_INSERTED</a>|</div><div class="line">             <a class="code" href="qbmap_8h.html#a443778b7c7416c75cd858711050240d1">QB_MAP_NOTIFY_DELETED</a>|</div><div class="line">             <a class="code" href="qbmap_8h.html#aab33c659e5e8139f008879e89275a940">QB_MAP_NOTIFY_REPLACED</a>|</div><div class="line">             <a class="code" href="qbmap_8h.html#a3a3d60c4772c4776db779d927612d05a">QB_MAP_NOTIFY_RECURSIVE</a>),</div><div class="line">            NULL);</div></div><!-- fragment --> </div><h2 class="groupheader">Macro Definition Documentation</h2>
<a id="a443778b7c7416c75cd858711050240d1"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a443778b7c7416c75cd858711050240d1">&#9670;&nbsp;</a></span>QB_MAP_NOTIFY_DELETED</h2>

<div class="memitem">
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          <td class="memname">#define QB_MAP_NOTIFY_DELETED&#160;&#160;&#160;1</td>
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</div>
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<a id="a09e0ad929e503bc677b7f9cd8603ca40"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a09e0ad929e503bc677b7f9cd8603ca40">&#9670;&nbsp;</a></span>QB_MAP_NOTIFY_FREE</h2>

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          <td class="memname">#define QB_MAP_NOTIFY_FREE&#160;&#160;&#160;16</td>
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</div>
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<a id="a956325e2495485b0bf8b5806221a4e47"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a956325e2495485b0bf8b5806221a4e47">&#9670;&nbsp;</a></span>QB_MAP_NOTIFY_INSERTED</h2>

<div class="memitem">
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          <td class="memname">#define QB_MAP_NOTIFY_INSERTED&#160;&#160;&#160;4</td>
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<a id="a3a3d60c4772c4776db779d927612d05a"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a3a3d60c4772c4776db779d927612d05a">&#9670;&nbsp;</a></span>QB_MAP_NOTIFY_RECURSIVE</h2>

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          <td class="memname">#define QB_MAP_NOTIFY_RECURSIVE&#160;&#160;&#160;8</td>
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</div>
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<a id="aab33c659e5e8139f008879e89275a940"></a>
<h2 class="memtitle"><span class="permalink"><a href="#aab33c659e5e8139f008879e89275a940">&#9670;&nbsp;</a></span>QB_MAP_NOTIFY_REPLACED</h2>

<div class="memitem">
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          <td class="memname">#define QB_MAP_NOTIFY_REPLACED&#160;&#160;&#160;2</td>
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<h2 class="groupheader">Typedef Documentation</h2>
<a id="a6312b26a9852b03023365fce76b04947"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a6312b26a9852b03023365fce76b04947">&#9670;&nbsp;</a></span>qb_map_iter_t</h2>

<div class="memitem">
<div class="memproto">
      <table class="memname">
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          <td class="memname">typedef struct qb_map_iter <a class="el" href="qbmap_8h.html#a6312b26a9852b03023365fce76b04947">qb_map_iter_t</a></td>
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<p>This is an opaque data type representing an iterator instance. </p>

</div>
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<a id="ab9016cec398a35ec2f28929e40f1aeec"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ab9016cec398a35ec2f28929e40f1aeec">&#9670;&nbsp;</a></span>qb_map_notify_fn</h2>

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          <td class="memname">typedef void(* qb_map_notify_fn) (uint32_t event, char *key, void *old_value, void *value, void *user_data)</td>
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<a id="af36f6cf5a7545610cacd530db6c02cf7"></a>
<h2 class="memtitle"><span class="permalink"><a href="#af36f6cf5a7545610cacd530db6c02cf7">&#9670;&nbsp;</a></span>qb_map_t</h2>

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          <td class="memname">typedef struct qb_map <a class="el" href="qbmap_8h.html#af36f6cf5a7545610cacd530db6c02cf7">qb_map_t</a></td>
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<p>This is an opaque data type representing an instance of a map. </p>

</div>
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<a id="a3202ce83928534cddc9adc62072fc6bb"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a3202ce83928534cddc9adc62072fc6bb">&#9670;&nbsp;</a></span>qb_map_transverse_fn</h2>

<div class="memitem">
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          <td class="memname">typedef int32_t(* qb_map_transverse_fn) (const char *key, void *value, void *user_data)</td>
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<h2 class="groupheader">Function Documentation</h2>
<a id="af5cb42e29911ed84f0c47140cd4bd65e"></a>
<h2 class="memtitle"><span class="permalink"><a href="#af5cb42e29911ed84f0c47140cd4bd65e">&#9670;&nbsp;</a></span>qb_hashtable_create()</h2>

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          <td class="memname"><a class="el" href="qbmap_8h.html#af36f6cf5a7545610cacd530db6c02cf7">qb_map_t</a>* qb_hashtable_create </td>
          <td>(</td>
          <td class="paramtype">size_t&#160;</td>
          <td class="paramname"><em>max_size</em></td><td>)</td>
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<p>Create an unsorted map based on a hashtable. </p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">max_size</td><td>maximum size of the hashtable</td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>the map instance </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#ab862b6a8e1189b36d22daf9126784795">&#9670;&nbsp;</a></span>qb_map_count_get()</h2>

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          <td class="memname">size_t qb_map_count_get </td>
          <td>(</td>
          <td class="paramtype"><a class="el" href="qbmap_8h.html#af36f6cf5a7545610cacd530db6c02cf7">qb_map_t</a> *&#160;</td>
          <td class="paramname"><em>map</em></td><td>)</td>
          <td></td>
        </tr>
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</div><div class="memdoc">

<p>Get the number of items in the map. </p>

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<h2 class="memtitle"><span class="permalink"><a href="#a81171d607d0464aeb11bcebf1227c065">&#9670;&nbsp;</a></span>qb_map_destroy()</h2>

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          <td class="memname">void qb_map_destroy </td>
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          <td class="paramtype"><a class="el" href="qbmap_8h.html#af36f6cf5a7545610cacd530db6c02cf7">qb_map_t</a> *&#160;</td>
          <td class="paramname"><em>map</em></td><td>)</td>
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<p>Destroy the map, removes all the items from the map. </p>

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<h2 class="memtitle"><span class="permalink"><a href="#a3e52d55673b7ae2e113c8327a562f851">&#9670;&nbsp;</a></span>qb_map_foreach()</h2>

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          <td class="memname">void qb_map_foreach </td>
          <td>(</td>
          <td class="paramtype"><a class="el" href="qbmap_8h.html#af36f6cf5a7545610cacd530db6c02cf7">qb_map_t</a> *&#160;</td>
          <td class="paramname"><em>map</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype"><a class="el" href="qbmap_8h.html#a3202ce83928534cddc9adc62072fc6bb">qb_map_transverse_fn</a>&#160;</td>
          <td class="paramname"><em>func</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">void *&#160;</td>
          <td class="paramname"><em>user_data</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
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<p>Calls the given function for each of the key/value pairs in the map. </p>
<p>The function is passed the key and value of each pair, and the given data parameter. The map is traversed in sorted order. </p>

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<h2 class="memtitle"><span class="permalink"><a href="#a8ca1233b2409ab37d03a1f5ed5783a31">&#9670;&nbsp;</a></span>qb_map_get()</h2>

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          <td class="memname">void* qb_map_get </td>
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          <td class="paramtype"><a class="el" href="qbmap_8h.html#af36f6cf5a7545610cacd530db6c02cf7">qb_map_t</a> *&#160;</td>
          <td class="paramname"><em>map</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">const char *&#160;</td>
          <td class="paramname"><em>key</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
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<p>Gets the value corresponding to the given key. </p>
<dl class="retval"><dt>Return values</dt><dd>
  <table class="retval">
    <tr><td class="paramname">NULL</td><td>(if the key does not exist) </td></tr>
    <tr><td class="paramname">a</td><td>pointer to the value </td></tr>
  </table>
  </dd>
</dl>

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<h2 class="memtitle"><span class="permalink"><a href="#a72fe80e5569e5115f6e92e46d82a416d">&#9670;&nbsp;</a></span>qb_map_iter_create()</h2>

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          <td class="memname"><a class="el" href="qbmap_8h.html#a6312b26a9852b03023365fce76b04947">qb_map_iter_t</a>* qb_map_iter_create </td>
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          <td class="paramtype"><a class="el" href="qbmap_8h.html#af36f6cf5a7545610cacd530db6c02cf7">qb_map_t</a> *&#160;</td>
          <td class="paramname"><em>map</em></td><td>)</td>
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<p>Create an iterator. </p>

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<h2 class="memtitle"><span class="permalink"><a href="#ac42fdf91f567699ee6c5f8e803718908">&#9670;&nbsp;</a></span>qb_map_iter_free()</h2>

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          <td class="memname">void qb_map_iter_free </td>
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          <td class="paramtype"><a class="el" href="qbmap_8h.html#a6312b26a9852b03023365fce76b04947">qb_map_iter_t</a> *&#160;</td>
          <td class="paramname"><em>i</em></td><td>)</td>
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<p>free the iterator </p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">i</td><td>the iterator </td></tr>
  </table>
  </dd>
</dl>

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<h2 class="memtitle"><span class="permalink"><a href="#a8fc94968f29e187cf15d3a15e874b664">&#9670;&nbsp;</a></span>qb_map_iter_next()</h2>

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          <td class="memname">const char* qb_map_iter_next </td>
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          <td class="paramtype"><a class="el" href="qbmap_8h.html#a6312b26a9852b03023365fce76b04947">qb_map_iter_t</a> *&#160;</td>
          <td class="paramname"><em>i</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">void **&#160;</td>
          <td class="paramname"><em>value</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
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<p>Get the next item. </p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">i</td><td>the iterator </td></tr>
    <tr><td class="paramname">value</td><td>(out) the next item's value</td></tr>
  </table>
  </dd>
</dl>
<dl class="retval"><dt>Return values</dt><dd>
  <table class="retval">
    <tr><td class="paramname">the</td><td>next key </td></tr>
    <tr><td class="paramname">NULL</td><td>- the end of the iteration </td></tr>
  </table>
  </dd>
</dl>

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<h2 class="memtitle"><span class="permalink"><a href="#af609266bc70e3461d1a8fb99a8756bb0">&#9670;&nbsp;</a></span>qb_map_notify_add()</h2>

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          <td class="memname">int32_t qb_map_notify_add </td>
          <td>(</td>
          <td class="paramtype"><a class="el" href="qbmap_8h.html#af36f6cf5a7545610cacd530db6c02cf7">qb_map_t</a> *&#160;</td>
          <td class="paramname"><em>m</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">const char *&#160;</td>
          <td class="paramname"><em>key</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype"><a class="el" href="qbmap_8h.html#ab9016cec398a35ec2f28929e40f1aeec">qb_map_notify_fn</a>&#160;</td>
          <td class="paramname"><em>fn</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">int32_t&#160;</td>
          <td class="paramname"><em>events</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">void *&#160;</td>
          <td class="paramname"><em>user_data</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
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<p>Add a notifier to the map. </p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">m</td><td>the map instance </td></tr>
    <tr><td class="paramname">key</td><td>the key (or prefix) to attach the notification to. </td></tr>
    <tr><td class="paramname">fn</td><td>the callback </td></tr>
    <tr><td class="paramname">events</td><td>the type of events to register for. </td></tr>
    <tr><td class="paramname">user_data</td><td>a pointer to be passed into the callback</td></tr>
  </table>
  </dd>
</dl>
<dl class="section note"><dt>Note</dt><dd>QB_MAP_NOTIFY_INSERTED is only valid on tries. </dd>
<dd>
you can use key prefixes with trie maps.</dd></dl>
<dl class="retval"><dt>Return values</dt><dd>
  <table class="retval">
    <tr><td class="paramname">0</td><td>success </td></tr>
    <tr><td class="paramname">-errno</td><td>failure </td></tr>
  </table>
  </dd>
</dl>

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<h2 class="memtitle"><span class="permalink"><a href="#a2697af7526e1994ba3b9c1b46bd40e98">&#9670;&nbsp;</a></span>qb_map_notify_del()</h2>

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          <td class="memname">int32_t qb_map_notify_del </td>
          <td>(</td>
          <td class="paramtype"><a class="el" href="qbmap_8h.html#af36f6cf5a7545610cacd530db6c02cf7">qb_map_t</a> *&#160;</td>
          <td class="paramname"><em>m</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">const char *&#160;</td>
          <td class="paramname"><em>key</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype"><a class="el" href="qbmap_8h.html#ab9016cec398a35ec2f28929e40f1aeec">qb_map_notify_fn</a>&#160;</td>
          <td class="paramname"><em>fn</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">int32_t&#160;</td>
          <td class="paramname"><em>events</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
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<p>Delete a notifier from the map. </p>
<dl class="section note"><dt>Note</dt><dd>the key,fn and events must match those you added.</dd></dl>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">m</td><td>the map instance </td></tr>
    <tr><td class="paramname">key</td><td>the key (or prefix) to attach the notification to. </td></tr>
    <tr><td class="paramname">fn</td><td>the callback </td></tr>
    <tr><td class="paramname">events</td><td>the type of events to register for.</td></tr>
  </table>
  </dd>
</dl>
<dl class="retval"><dt>Return values</dt><dd>
  <table class="retval">
    <tr><td class="paramname">0</td><td>success </td></tr>
    <tr><td class="paramname">-errno</td><td>failure </td></tr>
  </table>
  </dd>
</dl>

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<h2 class="memtitle"><span class="permalink"><a href="#abca55f8605f5db5180ab64b9e3d2c5cf">&#9670;&nbsp;</a></span>qb_map_notify_del_2()</h2>

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          <td class="memname">int32_t qb_map_notify_del_2 </td>
          <td>(</td>
          <td class="paramtype"><a class="el" href="qbmap_8h.html#af36f6cf5a7545610cacd530db6c02cf7">qb_map_t</a> *&#160;</td>
          <td class="paramname"><em>m</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">const char *&#160;</td>
          <td class="paramname"><em>key</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype"><a class="el" href="qbmap_8h.html#ab9016cec398a35ec2f28929e40f1aeec">qb_map_notify_fn</a>&#160;</td>
          <td class="paramname"><em>fn</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">int32_t&#160;</td>
          <td class="paramname"><em>events</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">void *&#160;</td>
          <td class="paramname"><em>user_data</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
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<p>Delete a notifier from the map (including the userdata). </p>
<dl class="section note"><dt>Note</dt><dd>the key, fn, events and userdata must match those you added.</dd></dl>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">m</td><td>the map instance </td></tr>
    <tr><td class="paramname">key</td><td>the key (or prefix) to attach the notification to. </td></tr>
    <tr><td class="paramname">fn</td><td>the callback </td></tr>
    <tr><td class="paramname">events</td><td>the type of events to register for. </td></tr>
    <tr><td class="paramname">user_data</td><td>a pointer to be passed into the callback</td></tr>
  </table>
  </dd>
</dl>
<dl class="retval"><dt>Return values</dt><dd>
  <table class="retval">
    <tr><td class="paramname">0</td><td>success </td></tr>
    <tr><td class="paramname">-errno</td><td>failure </td></tr>
  </table>
  </dd>
</dl>

</div>
</div>
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<h2 class="memtitle"><span class="permalink"><a href="#a79b9cc643af7318ea147a770906e6576">&#9670;&nbsp;</a></span>qb_map_pref_iter_create()</h2>

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          <td class="memname"><a class="el" href="qbmap_8h.html#a6312b26a9852b03023365fce76b04947">qb_map_iter_t</a>* qb_map_pref_iter_create </td>
          <td>(</td>
          <td class="paramtype"><a class="el" href="qbmap_8h.html#af36f6cf5a7545610cacd530db6c02cf7">qb_map_t</a> *&#160;</td>
          <td class="paramname"><em>map</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">const char *&#160;</td>
          <td class="paramname"><em>prefix</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
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<p>Create a prefix iterator. </p>
<p>This will iterate over all items with the given prefix. </p><dl class="section note"><dt>Note</dt><dd>this is only supported by the trie. </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#a453055122f662e46c218a2d38601bab0">&#9670;&nbsp;</a></span>qb_map_put()</h2>

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          <td class="memname">void qb_map_put </td>
          <td>(</td>
          <td class="paramtype"><a class="el" href="qbmap_8h.html#af36f6cf5a7545610cacd530db6c02cf7">qb_map_t</a> *&#160;</td>
          <td class="paramname"><em>map</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">const char *&#160;</td>
          <td class="paramname"><em>key</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">const void *&#160;</td>
          <td class="paramname"><em>value</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
</div><div class="memdoc">

<p>Inserts a new key and value into a qb_map_t. </p>
<p>If the key already exists in the qb_map_t, it gets replaced by the new key. </p>

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<h2 class="memtitle"><span class="permalink"><a href="#a8c771ef3bbeb90faa9086c6c0fc1d774">&#9670;&nbsp;</a></span>qb_map_rm()</h2>

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          <td class="memname">int32_t qb_map_rm </td>
          <td>(</td>
          <td class="paramtype"><a class="el" href="qbmap_8h.html#af36f6cf5a7545610cacd530db6c02cf7">qb_map_t</a> *&#160;</td>
          <td class="paramname"><em>map</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">const char *&#160;</td>
          <td class="paramname"><em>key</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
</div><div class="memdoc">

<p>Removes a key/value pair from a map. </p>

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<h2 class="memtitle"><span class="permalink"><a href="#a2ea96c043a4a1412eeb9269bf4714241">&#9670;&nbsp;</a></span>qb_skiplist_create()</h2>

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          <td class="memname"><a class="el" href="qbmap_8h.html#af36f6cf5a7545610cacd530db6c02cf7">qb_map_t</a>* qb_skiplist_create </td>
          <td>(</td>
          <td class="paramtype">void&#160;</td>
          <td class="paramname"></td><td>)</td>
          <td></td>
        </tr>
      </table>
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<p>Create a sorted map using a skiplist. </p>
<dl class="section return"><dt>Returns</dt><dd>the map instance </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#a972d5d5f8d25e9fb6e7fc4c11bd57f1b">&#9670;&nbsp;</a></span>qb_trie_create()</h2>

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          <td class="memname"><a class="el" href="qbmap_8h.html#af36f6cf5a7545610cacd530db6c02cf7">qb_map_t</a>* qb_trie_create </td>
          <td>(</td>
          <td class="paramtype">void&#160;</td>
          <td class="paramname"></td><td>)</td>
          <td></td>
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<p>Create a sorted map using a Patricia trie or "Radix tree". </p>
<p> 
See the wikipedia <a href="http://en.wikipedia.org/wiki/Radix_Tree">Radix_tree</a>
and <a href="http://en.wikipedia.org/wiki/Trie">Trie</a> pages.
 </p>

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<h2 class="memtitle"><span class="permalink"><a href="#a13a119de1ba6166970b3dd52399761ff">&#9670;&nbsp;</a></span>qb_trie_dump()</h2>

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        <tr>
          <td class="memname">void qb_trie_dump </td>
          <td>(</td>
          <td class="paramtype"><a class="el" href="qbmap_8h.html#af36f6cf5a7545610cacd530db6c02cf7">qb_map_t</a> *&#160;</td>
          <td class="paramname"><em>m</em></td><td>)</td>
          <td></td>
        </tr>
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<p>print out the nodes in the trie </p>
<p>(for debug purposes) </p>

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