Determines whether multiple members belong to a set.
SMISMEMBER
key member
[member…]
Returns whether each member
is a member of the set
stored at key
.
For every member
, 1
is returned if the
value is a member of the set, or 0
if the element is not a
member of the set or if key
does not exist.
Array reply: a list representing the membership of the given elements, in the same order as they are requested.
O(N) where N is the number of elements being checked for membership
@fast @read @set
127.0.0.1:6379> SADD myset "one"
(integer) 1
127.0.0.1:6379> SADD myset "one"
(integer) 0
127.0.0.1:6379> SMISMEMBER myset "one" "notamember"
1) (integer) 1
2) (integer) 0
SADD, SCARD, SDIFF, SDIFFSTORE, SINTER, SINTERCARD, SINTERSTORE, SISMEMBER, SMEMBERS, SMOVE, SPOP, SRANDMEMBER, SREM, SSCAN, SUNION, SUNIONSTORE.