Redis

LREM key count value

Removes the first count occurrences of elements equal to value from the list stored at key. The count argument influences the operation in the following ways:

For example, LREM list -2 "hello" will remove the last two occurrences of "hello" in the list stored at list.

Note that non-existing keys are treated like empty lists, so when key does not exist, the command will always return 0.

Return value

Integer reply: the number of removed elements.

Examples

redis>  RPUSH mylist "hello"
(integer) 1
redis>  RPUSH mylist "hello"
(integer) 2
redis>  RPUSH mylist "foo"
(integer) 3
redis>  RPUSH mylist "hello"
(integer) 4
redis>  LREM mylist -2 "hello"
(integer) 2
redis>  LRANGE mylist 0 -1
1) "hello"
2) "foo"
redis> 
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