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19 <b>LrangeCommand: Contents
</b><br> <a href=
"#LRANGE _key_ _start_ _end_">LRANGE _key_ _start_ _end_
</a><br> <a href=
"#Consistency with range functions in various programming languages">Consistency with range functions in various programming languages
</a><br> <a href=
"#Out-of-range indexes">Out-of-range indexes
</a><br> <a href=
"#Return value">Return value
</a>
22 <h1 class=
"wikiname">LrangeCommand
</h1>
29 #sidebar
<a href=
"ListCommandsSidebar.html">ListCommandsSidebar
</a><h1><a name=
"LRANGE _key_ _start_ _end_">LRANGE _key_ _start_ _end_
</a></h1>
30 <i>Time complexity: O(start+n) (with n being the length of the range and start being the start offset)
</i>Return the specified elements of the list stored at the specified
31 key. Start and end are zero-based indexes.
0 is the first element
32 of the list (the list head),
1 the next element and so on.
<br/><br/>For example LRANGE foobar
0 2 will return the first three elements
33 of the list.
<br/><br/><i>start
</i> and
<i>end
</i> can also be negative numbers indicating offsets
34 from the end of the list. For example -
1 is the last element of
35 the list, -
2 the penultimate element and so on.
<h2><a name=
"Consistency with range functions in various programming languages">Consistency with range functions in various programming languages
</a></h2>Note that if you have a list of numbers from
0 to
100, LRANGE
0 10 will return
36 11 elements, that is, rightmost item is included. This
<b>may or may not
</b> be consistent with
37 behavior of range-related functions in your programming language of choice (think Ruby's Range.new, Array#slice or Python's range() function).
<br/><br/>LRANGE behavior is consistent with one of Tcl.
<h2><a name=
"Out-of-range indexes">Out-of-range indexes
</a></h2>Indexes out of range will not produce an error: if start is over
38 the end of the list, or start
<code name=
"code" class=
"python">></code> end, an empty list is returned.
39 If end is over the end of the list Redis will threat it just like
40 the last element of the list.
<h2><a name=
"Return value">Return value
</a></h2><a href=
"ReplyTypes.html">Multi bulk reply
</a>, specifically a list of elements in the specified range.