mirror of
http://github.com/valkey-io/valkey
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43 lines
2.1 KiB
HTML
43 lines
2.1 KiB
HTML
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN">
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<html>
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<head>
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<link type="text/css" rel="stylesheet" href="style.css" />
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</head>
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<body>
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<div id="page">
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<div id='header'>
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<a href="index.html">
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<img style="border:none" alt="Redis Documentation" src="redis.png">
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</a>
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</div>
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<div class="index">
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<!-- This is a (PRE) block. Make sure it's left aligned or your toc title will be off. -->
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<b>LlenCommand: Contents</b><br> <a href="#LLEN _key_">LLEN _key_</a><br> <a href="#Return value">Return value</a><br> <a href="#See also">See also</a>
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</div>
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<h1 class="wikiname">LlenCommand</h1>
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<div class="summary">
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<div class="narrow">
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<h1><a name="LLEN _key_">LLEN _key_</a></h1>
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<i>Time complexity: O(1)</i><blockquote>Return the length of the list stored at the specified key. If thekey does not exist zero is returned (the same behaviour as forempty lists). If the value stored at <i>key</i> is not a list an error is returned.</blockquote>
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<h2><a name="Return value">Return value</a></h2><a href="ReplyTypes.html">Integer reply</a>, specifically:<br/><br/><pre class="codeblock python" name="code">
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The length of the list as an integer `>=` 0 if the operation succeeded
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-2 if the specified key does not hold a list value
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</pre>Note that library clients should raise an error if -2 is returned by the Redis server instead to pass the negative value back to the caller.<h2><a name="See also">See also</a></h2>
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<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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