SISMEMBER
Checks whether a set contains a member.
Sets · Example verified
Syntax covered here
SISMEMBER key memberThe case confirms membership for a value previously added with SADD.
Tested example & replies
Requests below run in order against an empty database. Each connection authenticates with the fixture password first. Quoted values are strings; null is a nil reply; arrays preserve RESP order.
# connection: default
> SADD team a
1
# connection: default
> SISMEMBER team a
1