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<b>ScardCommand: Contents</b><br> <a href="#SCARD _key_">SCARD _key_</a><br> <a href="#Return value">Return value</a>
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<h1 class="wikiname">ScardCommand</h1>
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#sidebar <a href="SetCommandsSidebar.html">SetCommandsSidebar</a><h1><a name="SCARD _key_">SCARD _key_</a></h1>
<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.</blockquote>
<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">
the cardinality (number of elements) of the set as an integer.
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