SMISMEMBER key member [member ...]
Available since: 6.2.0
Time complexity: O(N) where N is the number of elements being checked for membership
ACL categories:
@read
@set
@fast
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.
Return
Array reply: list representing the membership of the given elements, in the same order as they are requested.