Atomically return and remove the first element of the list.
For example if the list contains the elements "a","b","c"
redisLPop will return "a" and the list will become "b","c".
Usage
redisLPop(key, ...)
Arguments
key
The desired key associated with a list.
...
Optional additional arguments. Specify raw=TRUE to skip de-serialization of the data.
Value
The first element of the list associated with the specified key,
or NULL if the list is empty.