LSET

    1. dragonfly> RPUSH mylist "one"
    2. (integer) 1
    4. dragonfly> RPUSH mylist "three"
    5. (integer) 3
    6. dragonfly> LSET mylist 0 "four"
    7. "OK"
    9. "OK"
    10. 1) "four"
    11. 2) "five"
    12. 3) "three"