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 id="pagecontent">
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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>ScardCommand: Contents</b><br> <a href="#SCARD _key_">SCARD _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">ScardCommand</h1>
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<div class="summary">
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</div>
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<div class="narrow">
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<h1><a name="SCARD _key_">SCARD _key_</a></h1>
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<i>Time complexity O(1)</i><blockquote>Return the set cardinality (number of elements). If the <i>key</i> does notexist 0 is returned, like for empty sets. If the <i>key</i> does not holda set value -1 is returned. Client libraries should raise an errorwhen -1 is returned instead to pass the value to the caller.</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 cardinality (number of elements) of the set as an integer `>=` 0 if the operation succeeded
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-2 if the specified key does not hold a set value
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</pre><h2><a name="See also">See also</a></h2>
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<ul><li> <a href="SremCommand.html">SREM</a></li><li> <a href="SismemberCommand.html">SISMEMBER</a></li><li> <a href="ScardCommand.html">SCARD</a></li><li> <a href="SmembersCommand.html">SMEMBERS</a></li><li> <a href="SinterCommand.html">SINTER</a></li><li> <a href="SinterstoreCommand.html">SINTERSTORE</a></li></ul>
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</div>
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</div>
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</div>
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</body>
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</html>
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