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  18 <!-- This is a (PRE) block.  Make sure it's left aligned or your toc title will be off. --> 
  19 <b>LsetCommand: Contents
</b><br>  <a href=
"#LSET _key_ _index_ _value_">LSET _key_ _index_ _value_
</a><br>    <a href=
"#Return value">Return value
</a> 
  22                 <h1 class=
"wikiname">LsetCommand
</h1> 
  29                     #sidebar 
<a href=
"ListCommandsSidebar.html">ListCommandsSidebar
</a><h1><a name=
"LSET _key_ _index_ _value_">LSET _key_ _index_ _value_
</a></h1> 
  30 <i>Time complexity: O(N) (with N being the length of the list)
</i><blockquote>Set the list element at 
<i>index
</i> (see LINDEX for information about the_index_ argument) with the new 
<i>value
</i>. Out of range indexes willgenerate an error. Note that setting the first or last elements ofthe list is O(
1).
</blockquote> 
  31 <blockquote>Similarly to other list commands accepting indexes, the index can be negative to access elements starting from the end of the list. So -
1 is the last element, -
2 is the penultimate, and so forth.
</blockquote><h2><a name=
"Return value">Return value
</a></h2><a href=
"ReplyTypes.html">Status code reply
</a>