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19 <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>
22 <h1 class=
"wikiname">ScardCommand
</h1>
29 <h1><a name=
"SCARD _key_">SCARD _key_
</a></h1>
30 <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>
31 <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">
32 the cardinality (number of elements) of the set as an integer.
33 </pre><h2><a name=
"See also">See also
</a></h2>
34 <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>