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19<b>LpopCommand: Contents</b><br>&nbsp;&nbsp;<a href="#LPOP _key_">LPOP _key_</a><br>&nbsp;&nbsp;<a href="#RPOP _key_">RPOP _key_</a><br>&nbsp;&nbsp;&nbsp;&nbsp;<a href="#Return value">Return value</a><br>&nbsp;&nbsp;&nbsp;&nbsp;<a href="#See also">See also</a>
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29                    <h1><a name="LPOP _key_">LPOP _key_</a></h1>
30<h1><a name="RPOP _key_">RPOP _key_</a></h1>
31<i>Time complexity: O(1)</i><blockquote>Atomically return and remove the first (LPOP) or last (RPOP) elementof the list. For example if the list contains the elements &quot;a&quot;,&quot;b&quot;,&quot;c&quot; LPOPwill return &quot;a&quot; and the list will become &quot;b&quot;,&quot;c&quot;.</blockquote>
32<blockquote>If the <i>key</i> does not exist or the list is already empty the specialvalue 'nil' is returned.</blockquote>
33<h2><a name="Return value">Return value</a></h2><a href="ReplyTypes.html">Bulk reply</a><h2><a name="See also">See also</a></h2>
34<ul><li> <a href="LlenCommand.html">LLEN</a></li><li> <a href="LrangeCommand.html">LRANGE</a></li><li> <a href="LtrimCommand.html">LTRIM</a></li><li> <a href="LdelCommand.html">LDEL</a></li><li> <a href="LindexCommand.html">LINDEX</a></li><li> <a href="LsetCommand.html">LSET</a></li></ul>
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