LINDEX key index

Available since: 1.0.0

Time complexity: O(N) where N is the number of elements to traverse to get to the element at index. This makes asking for the first or the last element of the list O(1).

ACL categories: @read @list @slow

Returns the element at index index in the list stored at key. The index is zero-based, so 0 means the first element, 1 the second element and so on. Negative indices can be used to designate elements starting at the tail of the list. Here, -1 means the last element, -2 means the penultimate and so forth.

When the value at key is not a list, an error is returned.

@return

@bulk-string-reply: the requested element, or nil when index is out of range.

@examples

redis> LPUSH mylist "World"
TBD
redis> LPUSH mylist "Hello"
TBD
redis> LINDEX mylist 0
TBD
redis> LINDEX mylist -1
TBD
redis> LINDEX mylist 3