[redis.git] / doc / SetnxCommand.html


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<b>SetnxCommand: Contents</b><br>&nbsp;&nbsp;<a href="#SETNX _key_ _value_">SETNX _key_ _value_</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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                <h1 class="wikiname">SetnxCommand</h1>

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                    <h1><a name="SETNX _key_ _value_">SETNX _key_ _value_</a></h1>
<i>Time complexity: O(1)</i><blockquote>SETNX works exactly like <a href="SetCommand.html">SET</a> with the only difference thatif the key already exists no operation is performed.SETNX actually means &quot;SET if Not eXists&quot;.</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">
1 if the key was set
0 if the key was not set
</pre><h2><a name="See also">See also</a></h2>
<ul><li> <a href="SetCommand.html">SET</a></li></ul>
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	2	<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN">
	3	<html>
	4	<head>
	5	<link type="text/css" rel="stylesheet" href="style.css" />
	6	</head>
	7	<body>
	8	<div id="page">
	9
	10	<div id='header'>
	11	<a href="index.html">
	12	<img style="border:none" alt="Redis Documentation" src="redis.png">
	13	</a>
	14	</div>
	15
	16	<div id="pagecontent">
	17	<div class="index">
	18	<!-- This is a (PRE) block. Make sure it's left aligned or your toc title will be off. -->
	19	<b>SetnxCommand: Contents</b><br>  <a href="#SETNX _key_ _value_">SETNX _key_ _value_</a><br>    <a href="#Return value">Return value</a><br>    <a href="#See also">See also</a>
	20	</div>
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	22	<h1 class="wikiname">SetnxCommand</h1>
	23
	24	<div class="summary">
	25
	26	</div>
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	28	<div class="narrow">
	29	<h1><a name="SETNX _key_ _value_">SETNX _key_ _value_</a></h1>
	30	<i>Time complexity: O(1)</i><blockquote>SETNX works exactly like <a href="SetCommand.html">SET</a> with the only difference thatif the key already exists no operation is performed.SETNX actually means "SET if Not eXists".</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	1 if the key was set
	33	0 if the key was not set
	34	</pre><h2><a name="See also">See also</a></h2>
	35	<ul><li> <a href="SetCommand.html">SET</a></li></ul>
	36	</div>
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	38	</div>
	39	</div>
	40	</body>
	41	</html>
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